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git01.mediatek.com / haproxy / d1cd209b21865c69761e4d5005a9f36423a38479 / . / src / proto_http.c
blob: 05c028fed8f8a74aee3f614f75a5bae24ae8ed4f [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]28#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]29#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]30#include <common/compat.h>
31#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]32#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]33#include <common/memory.h>
34#include <common/mini-clist.h>
35#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]36#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]37#include <common/time.h>
38#include <common/uri_auth.h>
39#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]40
41#include <types/capture.h>
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]42#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]43#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44#include <types/global.h>
William Lallemand9ed62032016-11-21 17:49:11 +0100[diff] [blame]45#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]46
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]47#include <proto/acl.h>
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]48#include <proto/action.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]49#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]50#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]51#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]52#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]53#include <proto/checks.h>
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]54#include <proto/cli.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]55#include <proto/compression.h>
William Lallemand9ed62032016-11-21 17:49:11 +0100[diff] [blame]56#include <proto/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]57#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]58#include <proto/filters.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]59#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]60#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]61#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]62#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]63#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]64#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]65#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]66#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]67#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]68#include <proto/server.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]69#include <proto/stream.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]70#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]71#include <proto/task.h>
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]72#include <proto/pattern.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]73#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]74
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]75const char HTTP_100[] =
76 "HTTP/1.1 100 Continue\r\n\r\n";
77
78const struct chunk http_100_chunk = {
79 .str = (char *)&HTTP_100,
80 .len = sizeof(HTTP_100)-1
81};
82
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]83/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]84const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]86 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]87 "Location: "; /* not terminated since it will be concatenated with the URL */
88
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]89const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
95/* same as 302 except that the browser MUST retry with the GET method */
96const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]97 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]98 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]99 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]100 "Location: "; /* not terminated since it will be concatenated with the URL */
101
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]102
103/* same as 302 except that the browser MUST retry with the same method */
104const char *HTTP_307 =
105 "HTTP/1.1 307 Temporary Redirect\r\n"
106 "Cache-Control: no-cache\r\n"
107 "Content-length: 0\r\n"
108 "Location: "; /* not terminated since it will be concatenated with the URL */
109
110/* same as 301 except that the browser MUST retry with the same method */
111const char *HTTP_308 =
112 "HTTP/1.1 308 Permanent Redirect\r\n"
113 "Content-length: 0\r\n"
114 "Location: "; /* not terminated since it will be concatenated with the URL */
115
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]116/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
117const char *HTTP_401_fmt =
118 "HTTP/1.0 401 Unauthorized\r\n"
119 "Cache-Control: no-cache\r\n"
120 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]121 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]122 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
123 "\r\n"
124 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
125
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]126const char *HTTP_407_fmt =
127 "HTTP/1.0 407 Unauthorized\r\n"
128 "Cache-Control: no-cache\r\n"
129 "Connection: close\r\n"
130 "Content-Type: text/html\r\n"
131 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
132 "\r\n"
Godbach1f1fae62014-12-17 16:32:05 +0800[diff] [blame]133 "<html><body><h1>407 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]134
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135
136const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]137 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]138 [HTTP_ERR_400] = 400,
139 [HTTP_ERR_403] = 403,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]140 [HTTP_ERR_405] = 405,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]141 [HTTP_ERR_408] = 408,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]142 [HTTP_ERR_429] = 429,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]143 [HTTP_ERR_500] = 500,
144 [HTTP_ERR_502] = 502,
145 [HTTP_ERR_503] = 503,
146 [HTTP_ERR_504] = 504,
147};
148
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]149static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]150 [HTTP_ERR_200] =
151 "HTTP/1.0 200 OK\r\n"
152 "Cache-Control: no-cache\r\n"
153 "Connection: close\r\n"
154 "Content-Type: text/html\r\n"
155 "\r\n"
156 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
157
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]158 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]159 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]160 "Cache-Control: no-cache\r\n"
161 "Connection: close\r\n"
162 "Content-Type: text/html\r\n"
163 "\r\n"
164 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
165
166 [HTTP_ERR_403] =
167 "HTTP/1.0 403 Forbidden\r\n"
168 "Cache-Control: no-cache\r\n"
169 "Connection: close\r\n"
170 "Content-Type: text/html\r\n"
171 "\r\n"
172 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
173
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]174 [HTTP_ERR_405] =
175 "HTTP/1.0 405 Method Not Allowed\r\n"
176 "Cache-Control: no-cache\r\n"
177 "Connection: close\r\n"
178 "Content-Type: text/html\r\n"
179 "\r\n"
180 "<html><body><h1>405 Method Not Allowed</h1>\nA request was made of a resource using a request method not supported by that resource\n</body></html>\n",
181
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]182 [HTTP_ERR_408] =
183 "HTTP/1.0 408 Request Time-out\r\n"
184 "Cache-Control: no-cache\r\n"
185 "Connection: close\r\n"
186 "Content-Type: text/html\r\n"
187 "\r\n"
188 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
189
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]190 [HTTP_ERR_429] =
191 "HTTP/1.0 429 Too Many Requests\r\n"
192 "Cache-Control: no-cache\r\n"
193 "Connection: close\r\n"
194 "Content-Type: text/html\r\n"
195 "\r\n"
196 "<html><body><h1>429 Too Many Requests</h1>\nYou have sent too many requests in a given amount of time.\n</body></html>\n",
197
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]198 [HTTP_ERR_500] =
199 "HTTP/1.0 500 Server Error\r\n"
200 "Cache-Control: no-cache\r\n"
201 "Connection: close\r\n"
202 "Content-Type: text/html\r\n"
203 "\r\n"
204 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
205
206 [HTTP_ERR_502] =
207 "HTTP/1.0 502 Bad Gateway\r\n"
208 "Cache-Control: no-cache\r\n"
209 "Connection: close\r\n"
210 "Content-Type: text/html\r\n"
211 "\r\n"
212 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
213
214 [HTTP_ERR_503] =
215 "HTTP/1.0 503 Service Unavailable\r\n"
216 "Cache-Control: no-cache\r\n"
217 "Connection: close\r\n"
218 "Content-Type: text/html\r\n"
219 "\r\n"
220 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
221
222 [HTTP_ERR_504] =
223 "HTTP/1.0 504 Gateway Time-out\r\n"
224 "Cache-Control: no-cache\r\n"
225 "Connection: close\r\n"
226 "Content-Type: text/html\r\n"
227 "\r\n"
228 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
229
230};
231
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]232/* status codes available for the stats admin page (strictly 4 chars length) */
233const char *stat_status_codes[STAT_STATUS_SIZE] = {
234 [STAT_STATUS_DENY] = "DENY",
235 [STAT_STATUS_DONE] = "DONE",
236 [STAT_STATUS_ERRP] = "ERRP",
237 [STAT_STATUS_EXCD] = "EXCD",
238 [STAT_STATUS_NONE] = "NONE",
239 [STAT_STATUS_PART] = "PART",
240 [STAT_STATUS_UNKN] = "UNKN",
241};
242
243
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]244/* List head of all known action keywords for "http-request" */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]245struct action_kw_list http_req_keywords = {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]246 .list = LIST_HEAD_INIT(http_req_keywords.list)
247};
248
249/* List head of all known action keywords for "http-response" */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]250struct action_kw_list http_res_keywords = {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]251 .list = LIST_HEAD_INIT(http_res_keywords.list)
252};
253
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]254/* We must put the messages here since GCC cannot initialize consts depending
255 * on strlen().
256 */
257struct chunk http_err_chunks[HTTP_ERR_SIZE];
258
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]259/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
260static struct hdr_ctx static_hdr_ctx;
261
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]262#define FD_SETS_ARE_BITFIELDS
263#ifdef FD_SETS_ARE_BITFIELDS
264/*
265 * This map is used with all the FD_* macros to check whether a particular bit
266 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
267 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
268 * byte should be encoded. Be careful to always pass bytes from 0 to 255
269 * exclusively to the macros.
270 */
271fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
272fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]273fd_set http_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]274
275#else
276#error "Check if your OS uses bitfields for fd_sets"
277#endif
278
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]279static int http_apply_redirect_rule(struct redirect_rule *rule, struct stream *s, struct http_txn *txn);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]280
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]281static inline int http_msg_forward_body(struct stream *s, struct http_msg *msg);
282static inline int http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]283
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]284/* This function returns a reason associated with the HTTP status.
285 * This function never fails, a message is always returned.
286 */
287const char *get_reason(unsigned int status)
288{
289 switch (status) {
290 case 100: return "Continue";
291 case 101: return "Switching Protocols";
292 case 102: return "Processing";
293 case 200: return "OK";
294 case 201: return "Created";
295 case 202: return "Accepted";
296 case 203: return "Non-Authoritative Information";
297 case 204: return "No Content";
298 case 205: return "Reset Content";
299 case 206: return "Partial Content";
300 case 207: return "Multi-Status";
301 case 210: return "Content Different";
302 case 226: return "IM Used";
303 case 300: return "Multiple Choices";
304 case 301: return "Moved Permanently";
305 case 302: return "Moved Temporarily";
306 case 303: return "See Other";
307 case 304: return "Not Modified";
308 case 305: return "Use Proxy";
309 case 307: return "Temporary Redirect";
310 case 308: return "Permanent Redirect";
311 case 310: return "Too many Redirects";
312 case 400: return "Bad Request";
313 case 401: return "Unauthorized";
314 case 402: return "Payment Required";
315 case 403: return "Forbidden";
316 case 404: return "Not Found";
317 case 405: return "Method Not Allowed";
318 case 406: return "Not Acceptable";
319 case 407: return "Proxy Authentication Required";
320 case 408: return "Request Time-out";
321 case 409: return "Conflict";
322 case 410: return "Gone";
323 case 411: return "Length Required";
324 case 412: return "Precondition Failed";
325 case 413: return "Request Entity Too Large";
326 case 414: return "Request-URI Too Long";
327 case 415: return "Unsupported Media Type";
328 case 416: return "Requested range unsatisfiable";
329 case 417: return "Expectation failed";
330 case 418: return "I'm a teapot";
331 case 422: return "Unprocessable entity";
332 case 423: return "Locked";
333 case 424: return "Method failure";
334 case 425: return "Unordered Collection";
335 case 426: return "Upgrade Required";
336 case 428: return "Precondition Required";
337 case 429: return "Too Many Requests";
338 case 431: return "Request Header Fields Too Large";
339 case 449: return "Retry With";
340 case 450: return "Blocked by Windows Parental Controls";
341 case 451: return "Unavailable For Legal Reasons";
342 case 456: return "Unrecoverable Error";
343 case 499: return "client has closed connection";
344 case 500: return "Internal Server Error";
345 case 501: return "Not Implemented";
346 case 502: return "Bad Gateway ou Proxy Error";
347 case 503: return "Service Unavailable";
348 case 504: return "Gateway Time-out";
349 case 505: return "HTTP Version not supported";
350 case 506: return "Variant also negociate";
351 case 507: return "Insufficient storage";
352 case 508: return "Loop detected";
353 case 509: return "Bandwidth Limit Exceeded";
354 case 510: return "Not extended";
355 case 511: return "Network authentication required";
356 case 520: return "Web server is returning an unknown error";
357 default:
358 switch (status) {
359 case 100 ... 199: return "Informational";
360 case 200 ... 299: return "Success";
361 case 300 ... 399: return "Redirection";
362 case 400 ... 499: return "Client Error";
363 case 500 ... 599: return "Server Error";
364 default: return "Other";
365 }
366 }
367}
368
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]369void init_proto_http()
370{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]371 int i;
372 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]373 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]374
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]375 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
376 if (!http_err_msgs[msg]) {
377 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
378 abort();
379 }
380
381 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
382 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
383 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]384
385 /* initialize the log header encoding map : '{|}"#' should be encoded with
386 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
387 * URL encoding only requires '"', '#' to be encoded as well as non-
388 * printable characters above.
389 */
390 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
391 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]392 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]393 for (i = 0; i < 32; i++) {
394 FD_SET(i, hdr_encode_map);
395 FD_SET(i, url_encode_map);
396 }
397 for (i = 127; i < 256; i++) {
398 FD_SET(i, hdr_encode_map);
399 FD_SET(i, url_encode_map);
400 }
401
402 tmp = "\"#{|}";
403 while (*tmp) {
404 FD_SET(*tmp, hdr_encode_map);
405 tmp++;
406 }
407
408 tmp = "\"#";
409 while (*tmp) {
410 FD_SET(*tmp, url_encode_map);
411 tmp++;
412 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]413
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]414 /* initialize the http header encoding map. The draft httpbis define the
415 * header content as:
416 *
417 * HTTP-message = start-line
418 * *( header-field CRLF )
419 * CRLF
420 * [ message-body ]
421 * header-field = field-name ":" OWS field-value OWS
422 * field-value = *( field-content / obs-fold )
423 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
424 * obs-fold = CRLF 1*( SP / HTAB )
425 * field-vchar = VCHAR / obs-text
426 * VCHAR = %x21-7E
427 * obs-text = %x80-FF
428 *
429 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
430 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
431 * "obs-fold" is volontary forgotten because haproxy remove this.
432 */
433 memset(http_encode_map, 0, sizeof(http_encode_map));
434 for (i = 0x00; i <= 0x08; i++)
435 FD_SET(i, http_encode_map);
436 for (i = 0x0a; i <= 0x1f; i++)
437 FD_SET(i, http_encode_map);
438 FD_SET(0x7f, http_encode_map);
439
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]440 /* memory allocations */
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]441 pool2_http_txn = create_pool("http_txn", sizeof(struct http_txn), MEM_F_SHARED);
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]442 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]443 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]444}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]445
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]446/*
447 * We have 26 list of methods (1 per first letter), each of which can have
448 * up to 3 entries (2 valid, 1 null).
449 */
450struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]451 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]452 int len;
453 const char text[8];
454};
455
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]456const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]457 ['C' - 'A'] = {
458 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
459 },
460 ['D' - 'A'] = {
461 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
462 },
463 ['G' - 'A'] = {
464 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
465 },
466 ['H' - 'A'] = {
467 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
468 },
Christopher Fauletd57ad642015-07-31 14:26:57 +0200[diff] [blame]469 ['O' - 'A'] = {
470 [0] = { .meth = HTTP_METH_OPTIONS , .len=7, .text="OPTIONS" },
471 },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]472 ['P' - 'A'] = {
473 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
474 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
475 },
476 ['T' - 'A'] = {
477 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
478 },
479 /* rest is empty like this :
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]480 * [0] = { .meth = HTTP_METH_OTHER , .len=0, .text="" },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]481 */
482};
483
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]484const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]485 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
486 [HTTP_METH_GET] = { "GET", 3 },
487 [HTTP_METH_HEAD] = { "HEAD", 4 },
488 [HTTP_METH_POST] = { "POST", 4 },
489 [HTTP_METH_PUT] = { "PUT", 3 },
490 [HTTP_METH_DELETE] = { "DELETE", 6 },
491 [HTTP_METH_TRACE] = { "TRACE", 5 },
492 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
493};
494
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]495/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]496 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]497 * RFC2616/RFC5234/RFC7230 for those chars. A token is any ASCII char that is
498 * neither a separator nor a CTL char. An http ver_token is any ASCII which can
499 * be found in an HTTP version, which includes 'H', 'T', 'P', '/', '.' and any
500 * digit. Note: please do not overwrite values in assignment since gcc-2.95
501 * will not handle them correctly. It's worth noting that chars 128..255 are
502 * nothing, not even control chars.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]503 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]504const unsigned char http_char_classes[256] = {
505 [ 0] = HTTP_FLG_CTL,
506 [ 1] = HTTP_FLG_CTL,
507 [ 2] = HTTP_FLG_CTL,
508 [ 3] = HTTP_FLG_CTL,
509 [ 4] = HTTP_FLG_CTL,
510 [ 5] = HTTP_FLG_CTL,
511 [ 6] = HTTP_FLG_CTL,
512 [ 7] = HTTP_FLG_CTL,
513 [ 8] = HTTP_FLG_CTL,
514 [ 9] = HTTP_FLG_SPHT | HTTP_FLG_LWS | HTTP_FLG_SEP | HTTP_FLG_CTL,
515 [ 10] = HTTP_FLG_CRLF | HTTP_FLG_LWS | HTTP_FLG_CTL,
516 [ 11] = HTTP_FLG_CTL,
517 [ 12] = HTTP_FLG_CTL,
518 [ 13] = HTTP_FLG_CRLF | HTTP_FLG_LWS | HTTP_FLG_CTL,
519 [ 14] = HTTP_FLG_CTL,
520 [ 15] = HTTP_FLG_CTL,
521 [ 16] = HTTP_FLG_CTL,
522 [ 17] = HTTP_FLG_CTL,
523 [ 18] = HTTP_FLG_CTL,
524 [ 19] = HTTP_FLG_CTL,
525 [ 20] = HTTP_FLG_CTL,
526 [ 21] = HTTP_FLG_CTL,
527 [ 22] = HTTP_FLG_CTL,
528 [ 23] = HTTP_FLG_CTL,
529 [ 24] = HTTP_FLG_CTL,
530 [ 25] = HTTP_FLG_CTL,
531 [ 26] = HTTP_FLG_CTL,
532 [ 27] = HTTP_FLG_CTL,
533 [ 28] = HTTP_FLG_CTL,
534 [ 29] = HTTP_FLG_CTL,
535 [ 30] = HTTP_FLG_CTL,
536 [ 31] = HTTP_FLG_CTL,
537 [' '] = HTTP_FLG_SPHT | HTTP_FLG_LWS | HTTP_FLG_SEP,
538 ['!'] = HTTP_FLG_TOK,
539 ['"'] = HTTP_FLG_SEP,
540 ['#'] = HTTP_FLG_TOK,
541 ['$'] = HTTP_FLG_TOK,
542 ['%'] = HTTP_FLG_TOK,
543 ['&'] = HTTP_FLG_TOK,
544 [ 39] = HTTP_FLG_TOK,
545 ['('] = HTTP_FLG_SEP,
546 [')'] = HTTP_FLG_SEP,
547 ['*'] = HTTP_FLG_TOK,
548 ['+'] = HTTP_FLG_TOK,
549 [','] = HTTP_FLG_SEP,
550 ['-'] = HTTP_FLG_TOK,
551 ['.'] = HTTP_FLG_TOK | HTTP_FLG_VER,
552 ['/'] = HTTP_FLG_SEP | HTTP_FLG_VER,
553 ['0'] = HTTP_FLG_TOK | HTTP_FLG_VER,
554 ['1'] = HTTP_FLG_TOK | HTTP_FLG_VER,
555 ['2'] = HTTP_FLG_TOK | HTTP_FLG_VER,
556 ['3'] = HTTP_FLG_TOK | HTTP_FLG_VER,
557 ['4'] = HTTP_FLG_TOK | HTTP_FLG_VER,
558 ['5'] = HTTP_FLG_TOK | HTTP_FLG_VER,
559 ['6'] = HTTP_FLG_TOK | HTTP_FLG_VER,
560 ['7'] = HTTP_FLG_TOK | HTTP_FLG_VER,
561 ['8'] = HTTP_FLG_TOK | HTTP_FLG_VER,
562 ['9'] = HTTP_FLG_TOK | HTTP_FLG_VER,
563 [':'] = HTTP_FLG_SEP,
564 [';'] = HTTP_FLG_SEP,
565 ['<'] = HTTP_FLG_SEP,
566 ['='] = HTTP_FLG_SEP,
567 ['>'] = HTTP_FLG_SEP,
568 ['?'] = HTTP_FLG_SEP,
569 ['@'] = HTTP_FLG_SEP,
570 ['A'] = HTTP_FLG_TOK,
571 ['B'] = HTTP_FLG_TOK,
572 ['C'] = HTTP_FLG_TOK,
573 ['D'] = HTTP_FLG_TOK,
574 ['E'] = HTTP_FLG_TOK,
575 ['F'] = HTTP_FLG_TOK,
576 ['G'] = HTTP_FLG_TOK,
577 ['H'] = HTTP_FLG_TOK | HTTP_FLG_VER,
578 ['I'] = HTTP_FLG_TOK,
579 ['J'] = HTTP_FLG_TOK,
580 ['K'] = HTTP_FLG_TOK,
581 ['L'] = HTTP_FLG_TOK,
582 ['M'] = HTTP_FLG_TOK,
583 ['N'] = HTTP_FLG_TOK,
584 ['O'] = HTTP_FLG_TOK,
585 ['P'] = HTTP_FLG_TOK | HTTP_FLG_VER,
586 ['Q'] = HTTP_FLG_TOK,
587 ['R'] = HTTP_FLG_TOK | HTTP_FLG_VER,
588 ['S'] = HTTP_FLG_TOK | HTTP_FLG_VER,
589 ['T'] = HTTP_FLG_TOK | HTTP_FLG_VER,
590 ['U'] = HTTP_FLG_TOK,
591 ['V'] = HTTP_FLG_TOK,
592 ['W'] = HTTP_FLG_TOK,
593 ['X'] = HTTP_FLG_TOK,
594 ['Y'] = HTTP_FLG_TOK,
595 ['Z'] = HTTP_FLG_TOK,
596 ['['] = HTTP_FLG_SEP,
597 [ 92] = HTTP_FLG_SEP,
598 [']'] = HTTP_FLG_SEP,
599 ['^'] = HTTP_FLG_TOK,
600 ['_'] = HTTP_FLG_TOK,
601 ['`'] = HTTP_FLG_TOK,
602 ['a'] = HTTP_FLG_TOK,
603 ['b'] = HTTP_FLG_TOK,
604 ['c'] = HTTP_FLG_TOK,
605 ['d'] = HTTP_FLG_TOK,
606 ['e'] = HTTP_FLG_TOK,
607 ['f'] = HTTP_FLG_TOK,
608 ['g'] = HTTP_FLG_TOK,
609 ['h'] = HTTP_FLG_TOK,
610 ['i'] = HTTP_FLG_TOK,
611 ['j'] = HTTP_FLG_TOK,
612 ['k'] = HTTP_FLG_TOK,
613 ['l'] = HTTP_FLG_TOK,
614 ['m'] = HTTP_FLG_TOK,
615 ['n'] = HTTP_FLG_TOK,
616 ['o'] = HTTP_FLG_TOK,
617 ['p'] = HTTP_FLG_TOK,
618 ['q'] = HTTP_FLG_TOK,
619 ['r'] = HTTP_FLG_TOK,
620 ['s'] = HTTP_FLG_TOK,
621 ['t'] = HTTP_FLG_TOK,
622 ['u'] = HTTP_FLG_TOK,
623 ['v'] = HTTP_FLG_TOK,
624 ['w'] = HTTP_FLG_TOK,
625 ['x'] = HTTP_FLG_TOK,
626 ['y'] = HTTP_FLG_TOK,
627 ['z'] = HTTP_FLG_TOK,
628 ['{'] = HTTP_FLG_SEP,
629 ['|'] = HTTP_FLG_TOK,
630 ['}'] = HTTP_FLG_SEP,
631 ['~'] = HTTP_FLG_TOK,
632 [127] = HTTP_FLG_CTL,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]633};
634
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]635/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]636 * Adds a header and its CRLF at the tail of the message's buffer, just before
637 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]638 * The header is also automatically added to the index <hdr_idx>, and the end
639 * of headers is automatically adjusted. The number of bytes added is returned
640 * on success, otherwise <0 is returned indicating an error.
641 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]642int http_header_add_tail(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]643{
644 int bytes, len;
645
646 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]647 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]648 if (!bytes)
649 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]650 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]651 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
652}
653
654/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]655 * Adds a header and its CRLF at the tail of the message's buffer, just before
656 * the last CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]657 * the buffer is only opened and the space reserved, but nothing is copied.
658 * The header is also automatically added to the index <hdr_idx>, and the end
659 * of headers is automatically adjusted. The number of bytes added is returned
660 * on success, otherwise <0 is returned indicating an error.
661 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]662int http_header_add_tail2(struct http_msg *msg,
663 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]664{
665 int bytes;
666
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]667 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]668 if (!bytes)
669 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]670 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]671 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
672}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]673
674/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]675 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
676 * If so, returns the position of the first non-space character relative to
677 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
678 * to return a pointer to the place after the first space. Returns 0 if the
679 * header name does not match. Checks are case-insensitive.
680 */
681int http_header_match2(const char *hdr, const char *end,
682 const char *name, int len)
683{
684 const char *val;
685
686 if (hdr + len >= end)
687 return 0;
688 if (hdr[len] != ':')
689 return 0;
690 if (strncasecmp(hdr, name, len) != 0)
691 return 0;
692 val = hdr + len + 1;
693 while (val < end && HTTP_IS_SPHT(*val))
694 val++;
695 if ((val >= end) && (len + 2 <= end - hdr))
696 return len + 2; /* we may replace starting from second space */
697 return val - hdr;
698}
699
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]700/* Find the first or next occurrence of header <name> in message buffer <sol>
701 * using headers index <idx>, and return it in the <ctx> structure. This
702 * structure holds everything necessary to use the header and find next
703 * occurrence. If its <idx> member is 0, the header is searched from the
704 * beginning. Otherwise, the next occurrence is returned. The function returns
705 * 1 when it finds a value, and 0 when there is no more. It is very similar to
706 * http_find_header2() except that it is designed to work with full-line headers
707 * whose comma is not a delimiter but is part of the syntax. As a special case,
708 * if ctx->val is NULL when searching for a new values of a header, the current
709 * header is rescanned. This allows rescanning after a header deletion.
710 */
711int http_find_full_header2(const char *name, int len,
712 char *sol, struct hdr_idx *idx,
713 struct hdr_ctx *ctx)
714{
715 char *eol, *sov;
716 int cur_idx, old_idx;
717
718 cur_idx = ctx->idx;
719 if (cur_idx) {
720 /* We have previously returned a header, let's search another one */
721 sol = ctx->line;
722 eol = sol + idx->v[cur_idx].len;
723 goto next_hdr;
724 }
725
726 /* first request for this header */
727 sol += hdr_idx_first_pos(idx);
728 old_idx = 0;
729 cur_idx = hdr_idx_first_idx(idx);
730 while (cur_idx) {
731 eol = sol + idx->v[cur_idx].len;
732
733 if (len == 0) {
734 /* No argument was passed, we want any header.
735 * To achieve this, we simply build a fake request. */
736 while (sol + len < eol && sol[len] != ':')
737 len++;
738 name = sol;
739 }
740
741 if ((len < eol - sol) &&
742 (sol[len] == ':') &&
743 (strncasecmp(sol, name, len) == 0)) {
744 ctx->del = len;
745 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]746 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]747 sov++;
748
749 ctx->line = sol;
750 ctx->prev = old_idx;
751 ctx->idx = cur_idx;
752 ctx->val = sov - sol;
753 ctx->tws = 0;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]754 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]755 eol--;
756 ctx->tws++;
757 }
758 ctx->vlen = eol - sov;
759 return 1;
760 }
761 next_hdr:
762 sol = eol + idx->v[cur_idx].cr + 1;
763 old_idx = cur_idx;
764 cur_idx = idx->v[cur_idx].next;
765 }
766 return 0;
767}
768
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]769/* Find the first or next header field in message buffer <sol> using headers
770 * index <idx>, and return it in the <ctx> structure. This structure holds
771 * everything necessary to use the header and find next occurrence. If its
772 * <idx> member is 0, the first header is retrieved. Otherwise, the next
773 * occurrence is returned. The function returns 1 when it finds a value, and
774 * 0 when there is no more. It is equivalent to http_find_full_header2() with
775 * no header name.
776 */
777int http_find_next_header(char *sol, struct hdr_idx *idx, struct hdr_ctx *ctx)
778{
779 char *eol, *sov;
780 int cur_idx, old_idx;
781 int len;
782
783 cur_idx = ctx->idx;
784 if (cur_idx) {
785 /* We have previously returned a header, let's search another one */
786 sol = ctx->line;
787 eol = sol + idx->v[cur_idx].len;
788 goto next_hdr;
789 }
790
791 /* first request for this header */
792 sol += hdr_idx_first_pos(idx);
793 old_idx = 0;
794 cur_idx = hdr_idx_first_idx(idx);
795 while (cur_idx) {
796 eol = sol + idx->v[cur_idx].len;
797
798 len = 0;
799 while (1) {
800 if (len >= eol - sol)
801 goto next_hdr;
802 if (sol[len] == ':')
803 break;
804 len++;
805 }
806
807 ctx->del = len;
808 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]809 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]810 sov++;
811
812 ctx->line = sol;
813 ctx->prev = old_idx;
814 ctx->idx = cur_idx;
815 ctx->val = sov - sol;
816 ctx->tws = 0;
817
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]818 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]819 eol--;
820 ctx->tws++;
821 }
822 ctx->vlen = eol - sov;
823 return 1;
824
825 next_hdr:
826 sol = eol + idx->v[cur_idx].cr + 1;
827 old_idx = cur_idx;
828 cur_idx = idx->v[cur_idx].next;
829 }
830 return 0;
831}
832
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]833/* Find the end of the header value contained between <s> and <e>. See RFC2616,
834 * par 2.2 for more information. Note that it requires a valid header to return
835 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]836 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]837char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]838{
839 int quoted, qdpair;
840
841 quoted = qdpair = 0;
Willy Tarreaue6d9c212016-11-05 18:23:38 +0100[diff] [blame]842
843#if defined(__x86_64__) || \
844 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
845 defined(__ARM_ARCH_7A__)
846 /* speedup: skip everything not a comma nor a double quote */
847 for (; s <= e - sizeof(int); s += sizeof(int)) {
848 unsigned int c = *(int *)s; // comma
849 unsigned int q = c; // quote
850
851 c ^= 0x2c2c2c2c; // contains one zero on a comma
852 q ^= 0x22222222; // contains one zero on a quote
853
854 c = (c - 0x01010101) & ~c; // contains 0x80 below a comma
855 q = (q - 0x01010101) & ~q; // contains 0x80 below a quote
856
857 if ((c | q) & 0x80808080)
858 break; // found a comma or a quote
859 }
860#endif
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]861 for (; s < e; s++) {
862 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]863 else if (quoted) {
864 if (*s == '\\') qdpair = 1;
865 else if (*s == '"') quoted = 0;
866 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]867 else if (*s == '"') quoted = 1;
868 else if (*s == ',') return s;
869 }
870 return s;
871}
872
873/* Find the first or next occurrence of header <name> in message buffer <sol>
874 * using headers index <idx>, and return it in the <ctx> structure. This
875 * structure holds everything necessary to use the header and find next
876 * occurrence. If its <idx> member is 0, the header is searched from the
877 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]878 * 1 when it finds a value, and 0 when there is no more. It is designed to work
879 * with headers defined as comma-separated lists. As a special case, if ctx->val
880 * is NULL when searching for a new values of a header, the current header is
881 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]882 */
883int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]884 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]885 struct hdr_ctx *ctx)
886{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]887 char *eol, *sov;
888 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]889
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]890 cur_idx = ctx->idx;
891 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]892 /* We have previously returned a value, let's search
893 * another one on the same line.
894 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]895 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]896 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]897 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]898 eol = sol + idx->v[cur_idx].len;
899
900 if (sov >= eol)
901 /* no more values in this header */
902 goto next_hdr;
903
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]904 /* values remaining for this header, skip the comma but save it
905 * for later use (eg: for header deletion).
906 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]907 sov++;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]908 while (sov < eol && HTTP_IS_LWS((*sov)))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]909 sov++;
910
911 goto return_hdr;
912 }
913
914 /* first request for this header */
915 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]916 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]917 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]918 while (cur_idx) {
919 eol = sol + idx->v[cur_idx].len;
920
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]921 if (len == 0) {
922 /* No argument was passed, we want any header.
923 * To achieve this, we simply build a fake request. */
924 while (sol + len < eol && sol[len] != ':')
925 len++;
926 name = sol;
927 }
928
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]929 if ((len < eol - sol) &&
930 (sol[len] == ':') &&
931 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]932 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]933 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]934 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]935 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]936
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]937 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]938 ctx->prev = old_idx;
939 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]940 ctx->idx = cur_idx;
941 ctx->val = sov - sol;
942
943 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]944 ctx->tws = 0;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]945 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]946 eol--;
947 ctx->tws++;
948 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]949 ctx->vlen = eol - sov;
950 return 1;
951 }
952 next_hdr:
953 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]954 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]955 cur_idx = idx->v[cur_idx].next;
956 }
957 return 0;
958}
959
960int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]961 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]962 struct hdr_ctx *ctx)
963{
964 return http_find_header2(name, strlen(name), sol, idx, ctx);
965}
966
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]967/* Remove one value of a header. This only works on a <ctx> returned by one of
968 * the http_find_header functions. The value is removed, as well as surrounding
969 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]970 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]971 * message <msg>. The new index is returned. If it is zero, it means there is
972 * no more header, so any processing may stop. The ctx is always left in a form
973 * that can be handled by http_find_header2() to find next occurrence.
974 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]975int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx)
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]976{
977 int cur_idx = ctx->idx;
978 char *sol = ctx->line;
979 struct hdr_idx_elem *hdr;
980 int delta, skip_comma;
981
982 if (!cur_idx)
983 return 0;
984
985 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]986 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]987 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]988 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]989 http_msg_move_end(msg, delta);
990 idx->used--;
991 hdr->len = 0; /* unused entry */
992 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]993 if (idx->tail == ctx->idx)
994 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]995 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau7c1c2172015-01-07 17:23:50 +0100[diff] [blame]996 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]997 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]998 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]999 return ctx->idx;
1000 }
1001
1002 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1003 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
1004 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1005 */
1006
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1007 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1008 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1009 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1010 NULL, 0);
1011 hdr->len += delta;
1012 http_msg_move_end(msg, delta);
1013 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1014 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1015 return ctx->idx;
1016}
1017
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1018/* This function handles a server error at the stream interface level. The
1019 * stream interface is assumed to be already in a closed state. An optional
1020 * message is copied into the input buffer, and an HTTP status code stored.
1021 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]1022 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1023 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1024static void http_server_error(struct stream *s, struct stream_interface *si,
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1025 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1026{
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]1027 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]1028 channel_auto_read(si_oc(si));
1029 channel_abort(si_oc(si));
1030 channel_auto_close(si_oc(si));
1031 channel_erase(si_oc(si));
1032 channel_auto_close(si_ic(si));
1033 channel_auto_read(si_ic(si));
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]1034 if (status > 0 && msg) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1035 s->txn->status = status;
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]1036 bo_inject(si_ic(si), msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1037 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1038 if (!(s->flags & SF_ERR_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]1039 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1040 if (!(s->flags & SF_FINST_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]1041 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1042}
1043
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1044/* This function returns the appropriate error location for the given stream
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1045 * and message.
1046 */
1047
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1048struct chunk *http_error_message(struct stream *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1049{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1050 if (s->be->errmsg[msgnum].str)
1051 return &s->be->errmsg[msgnum];
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]1052 else if (strm_fe(s)->errmsg[msgnum].str)
1053 return &strm_fe(s)->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1054 else
1055 return &http_err_chunks[msgnum];
1056}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1057
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]1058void
1059http_reply_and_close(struct stream *s, short status, struct chunk *msg)
1060{
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]1061 s->txn->flags &= ~TX_WAIT_NEXT_RQ;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]1062 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]1063 stream_int_retnclose(&s->si[0], msg);
1064}
1065
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1066/*
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]1067 * returns a known method among HTTP_METH_* or HTTP_METH_OTHER for all unknown
1068 * ones.
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1069 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]1070enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1071{
1072 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1073 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1074
1075 m = ((unsigned)*str - 'A');
1076
1077 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1078 for (h = http_methods[m]; h->len > 0; h++) {
1079 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1080 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1081 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1082 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1083 };
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1084 }
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]1085 return HTTP_METH_OTHER;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1086}
1087
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1088/* Parse the URI from the given transaction (which is assumed to be in request
1089 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
1090 * It is returned otherwise.
1091 */
Thierry FOURNIER3c331782015-09-17 19:33:35 +0200[diff] [blame]1092char *http_get_path(struct http_txn *txn)
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1093{
1094 char *ptr, *end;
1095
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1096 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1097 end = ptr + txn->req.sl.rq.u_l;
1098
1099 if (ptr >= end)
1100 return NULL;
1101
1102 /* RFC2616, par. 5.1.2 :
1103 * Request-URI = "*" | absuri | abspath | authority
1104 */
1105
1106 if (*ptr == '*')
1107 return NULL;
1108
1109 if (isalpha((unsigned char)*ptr)) {
1110 /* this is a scheme as described by RFC3986, par. 3.1 */
1111 ptr++;
1112 while (ptr < end &&
1113 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
1114 ptr++;
1115 /* skip '://' */
1116 if (ptr == end || *ptr++ != ':')
1117 return NULL;
1118 if (ptr == end || *ptr++ != '/')
1119 return NULL;
1120 if (ptr == end || *ptr++ != '/')
1121 return NULL;
1122 }
1123 /* skip [user[:passwd]@]host[:[port]] */
1124
1125 while (ptr < end && *ptr != '/')
1126 ptr++;
1127
1128 if (ptr == end)
1129 return NULL;
1130
1131 /* OK, we got the '/' ! */
1132 return ptr;
1133}
1134
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]1135/* Parse the URI from the given string and look for the "/" beginning the PATH.
1136 * If not found, return NULL. It is returned otherwise.
1137 */
1138static char *
1139http_get_path_from_string(char *str)
1140{
1141 char *ptr = str;
1142
1143 /* RFC2616, par. 5.1.2 :
1144 * Request-URI = "*" | absuri | abspath | authority
1145 */
1146
1147 if (*ptr == '*')
1148 return NULL;
1149
1150 if (isalpha((unsigned char)*ptr)) {
1151 /* this is a scheme as described by RFC3986, par. 3.1 */
1152 ptr++;
1153 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
1154 ptr++;
1155 /* skip '://' */
1156 if (*ptr == '\0' || *ptr++ != ':')
1157 return NULL;
1158 if (*ptr == '\0' || *ptr++ != '/')
1159 return NULL;
1160 if (*ptr == '\0' || *ptr++ != '/')
1161 return NULL;
1162 }
1163 /* skip [user[:passwd]@]host[:[port]] */
1164
1165 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
1166 ptr++;
1167
1168 if (*ptr == '\0' || *ptr == ' ')
1169 return NULL;
1170
1171 /* OK, we got the '/' ! */
1172 return ptr;
1173}
1174
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]1175/* Returns a 302 for a redirectable request that reaches a server working in
1176 * in redirect mode. This may only be called just after the stream interface
1177 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
1178 * follow normal proxy processing. NOTE: this function is designed to support
1179 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1180 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1181void http_perform_server_redirect(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1182{
1183 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1184 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1185 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1186 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1187
1188 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1189 trash.len = strlen(HTTP_302);
1190 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1191
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]1192 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1193
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1194 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1195 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1196 return;
1197
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1198 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1199 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1200 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
1201 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1202 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1203
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1204 /* 3: add the request URI. Since it was already forwarded, we need
1205 * to temporarily rewind the buffer.
1206 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1207 txn = s->txn;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1208 b_rew(s->req.buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1209
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1210 path = http_get_path(txn);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1211 len = buffer_count(s->req.buf, path, b_ptr(s->req.buf, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1212
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1213 b_adv(s->req.buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1214
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1215 if (!path)
1216 return;
1217
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1218 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1219 return;
1220
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1221 memcpy(trash.str + trash.len, path, len);
1222 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1223
1224 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1225 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
1226 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1227 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1228 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
1229 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1230 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1231
1232 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]1233 si_shutr(si);
1234 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1235 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1236 si->state = SI_ST_CLO;
1237
1238 /* send the message */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1239 http_server_error(s, si, SF_ERR_LOCAL, SF_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1240
1241 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]1242 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]1243 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1244}
1245
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1246/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1247 * that the server side is closed. Note that err_type is actually a
1248 * bitmask, where almost only aborts may be cumulated with other
1249 * values. We consider that aborted operations are more important
1250 * than timeouts or errors due to the fact that nobody else in the
1251 * logs might explain incomplete retries. All others should avoid
1252 * being cumulated. It should normally not be possible to have multiple
1253 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1254 * Note that connection errors appearing on the second request of a keep-alive
1255 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1256 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1257void http_return_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1258{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1259 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1260
1261 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1262 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1263 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1264 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1265 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1266 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1267 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1268 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1269 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1270 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1271 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1272 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1273 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1274 else if (err_type & SI_ET_CONN_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1275 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1276 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1277 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1278 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1279 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_C,
1280 503, (s->flags & SF_SRV_REUSED) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1281 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1282 else if (err_type & SI_ET_CONN_RES)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1283 http_server_error(s, si, SF_ERR_RESOURCE, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1284 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1285 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1286 else /* SI_ET_CONN_OTHER and others */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1287 http_server_error(s, si, SF_ERR_INTERNAL, SF_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1288 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1289}
1290
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1291extern const char sess_term_cond[8];
1292extern const char sess_fin_state[8];
1293extern const char *monthname[12];
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]1294struct pool_head *pool2_http_txn;
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1295struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1296struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1297struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1298
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1299/*
1300 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1301 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1302 */
1303void capture_headers(char *som, struct hdr_idx *idx,
1304 char **cap, struct cap_hdr *cap_hdr)
1305{
1306 char *eol, *sol, *col, *sov;
1307 int cur_idx;
1308 struct cap_hdr *h;
1309 int len;
1310
1311 sol = som + hdr_idx_first_pos(idx);
1312 cur_idx = hdr_idx_first_idx(idx);
1313
1314 while (cur_idx) {
1315 eol = sol + idx->v[cur_idx].len;
1316
1317 col = sol;
1318 while (col < eol && *col != ':')
1319 col++;
1320
1321 sov = col + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]1322 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1323 sov++;
1324
1325 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1326 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1327 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1328 if (cap[h->index] == NULL)
1329 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1330 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1331
1332 if (cap[h->index] == NULL) {
1333 Alert("HTTP capture : out of memory.\n");
1334 continue;
1335 }
1336
1337 len = eol - sov;
1338 if (len > h->len)
1339 len = h->len;
1340
1341 memcpy(cap[h->index], sov, len);
1342 cap[h->index][len]=0;
1343 }
1344 }
1345 sol = eol + idx->v[cur_idx].cr + 1;
1346 cur_idx = idx->v[cur_idx].next;
1347 }
1348}
1349
1350
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1351/* either we find an LF at <ptr> or we jump to <bad>.
1352 */
1353#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1354
1355/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1356 * otherwise to <http_msg_ood> with <state> set to <st>.
1357 */
1358#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1359 ptr++; \
1360 if (likely(ptr < end)) \
1361 goto good; \
1362 else { \
1363 state = (st); \
1364 goto http_msg_ood; \
1365 } \
1366 } while (0)
1367
1368
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1369/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1370 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1371 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1372 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1373 * will give undefined results.
1374 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1375 * and that msg->sol points to the beginning of the response.
1376 * If a complete line is found (which implies that at least one CR or LF is
1377 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1378 * returned indicating an incomplete line (which does not mean that parts have
1379 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1380 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1381 * upon next call.
1382 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1383 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1384 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1385 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1386 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1387 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1388const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1389 enum ht_state state, const char *ptr, const char *end,
1390 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1391{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1392 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1393
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1394 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1395 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1396 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1397 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1398 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1399
1400 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1401 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1402 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1403 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1404 state = HTTP_MSG_ERROR;
1405 break;
1406
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1407 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1408 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1409 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1410 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1411 goto http_msg_rpcode;
1412 }
1413 if (likely(HTTP_IS_SPHT(*ptr)))
1414 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1415 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1416 state = HTTP_MSG_ERROR;
1417 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1418
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1419 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1420 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1421 if (likely(!HTTP_IS_LWS(*ptr)))
1422 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1423
1424 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1425 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1426 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1427 }
1428
1429 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1430 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1431 http_msg_rsp_reason:
1432 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1433 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1434 msg->sl.st.r_l = 0;
1435 goto http_msg_rpline_eol;
1436
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1437 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1438 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1439 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1440 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1441 goto http_msg_rpreason;
1442 }
1443 if (likely(HTTP_IS_SPHT(*ptr)))
1444 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1445 /* so it's a CR/LF, so there is no reason phrase */
1446 goto http_msg_rsp_reason;
1447
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1448 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1449 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1450 if (likely(!HTTP_IS_CRLF(*ptr)))
1451 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1452 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1453 http_msg_rpline_eol:
1454 /* We have seen the end of line. Note that we do not
1455 * necessarily have the \n yet, but at least we know that we
1456 * have EITHER \r OR \n, otherwise the response would not be
1457 * complete. We can then record the response length and return
1458 * to the caller which will be able to register it.
1459 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1460 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1461 return ptr;
1462
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1463 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1464#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1465 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1466 exit(1);
1467#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1468 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1469 }
1470
1471 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1472 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1473 if (ret_state)
1474 *ret_state = state;
1475 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1476 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1477 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1478}
1479
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1480/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1481 * This function parses a request line between <ptr> and <end>, starting with
1482 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1483 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1484 * will give undefined results.
1485 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1486 * and that msg->sol points to the beginning of the request.
1487 * If a complete line is found (which implies that at least one CR or LF is
1488 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1489 * returned indicating an incomplete line (which does not mean that parts have
1490 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1491 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1492 * upon next call.
1493 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1494 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1495 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1496 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1497 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1498 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1499const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1500 enum ht_state state, const char *ptr, const char *end,
1501 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1502{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1503 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1504
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1505 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1506 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1507 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 if (likely(HTTP_IS_TOKEN(*ptr)))
1509 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1510
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1511 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1512 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1513 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1514 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1515
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1516 if (likely(HTTP_IS_CRLF(*ptr))) {
1517 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1518 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1519 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1520 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1521 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1522 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1523 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1524 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1525 msg->sl.rq.v_l = 0;
1526 goto http_msg_rqline_eol;
1527 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1528 state = HTTP_MSG_ERROR;
1529 break;
1530
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1531 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1532 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1533 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1534 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1535 goto http_msg_rquri;
1536 }
1537 if (likely(HTTP_IS_SPHT(*ptr)))
1538 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1539 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1540 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1541
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1542 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1543 http_msg_rquri:
Willy Tarreau5f10ea32016-11-05 17:52:06 +0100[diff] [blame]1544#if defined(__x86_64__) || \
1545 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
1546 defined(__ARM_ARCH_7A__)
1547 /* speedup: skip bytes not between 0x21 and 0x7e inclusive */
1548 while (ptr <= end - sizeof(int)) {
1549 int x = *(int *)ptr - 0x21212121;
1550 if (x & 0x80808080)
1551 break;
1552
1553 x -= 0x5e5e5e5e;
1554 if (!(x & 0x80808080))
1555 break;
1556
1557 ptr += sizeof(int);
1558 }
1559#endif
1560 http_msg_rquri2:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1561 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau5f10ea32016-11-05 17:52:06 +0100[diff] [blame]1562 EAT_AND_JUMP_OR_RETURN(http_msg_rquri2, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1563
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1564 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1565 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1566 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1567 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1568
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1569 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1570 /* non-ASCII chars are forbidden unless option
1571 * accept-invalid-http-request is enabled in the frontend.
1572 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1573 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1574 if (msg->err_pos < -1)
1575 goto invalid_char;
1576 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1577 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1578 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1579 }
1580
1581 if (likely(HTTP_IS_CRLF(*ptr))) {
1582 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1583 goto http_msg_req09_uri_e;
1584 }
1585
1586 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1587 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1588 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1589 state = HTTP_MSG_ERROR;
1590 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1591
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1592 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1593 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1594 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1595 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1596 goto http_msg_rqver;
1597 }
1598 if (likely(HTTP_IS_SPHT(*ptr)))
1599 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1600 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1601 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1602
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1603 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1604 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1605 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1606 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1607
1608 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1609 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1610 http_msg_rqline_eol:
1611 /* We have seen the end of line. Note that we do not
1612 * necessarily have the \n yet, but at least we know that we
1613 * have EITHER \r OR \n, otherwise the request would not be
1614 * complete. We can then record the request length and return
1615 * to the caller which will be able to register it.
1616 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1617 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1618 return ptr;
1619 }
1620
1621 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1622 state = HTTP_MSG_ERROR;
1623 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1624
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1625 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1626#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1627 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1628 exit(1);
1629#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1630 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1631 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1632
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1633 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1634 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1635 if (ret_state)
1636 *ret_state = state;
1637 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1638 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1639 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1640}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1641
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1642/*
1643 * Returns the data from Authorization header. Function may be called more
1644 * than once so data is stored in txn->auth_data. When no header is found
1645 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
Thierry FOURNIER98d96952014-01-23 12:13:02 +0100[diff] [blame]1646 * searching again for something we are unable to find anyway. However, if
1647 * the result if valid, the cache is not reused because we would risk to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1648 * have the credentials overwritten by another stream in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1649 */
1650
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1651/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1652 * set according to global.tune.bufsize.
1653 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1654char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1655
1656int
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1657get_http_auth(struct stream *s)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1658{
1659
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1660 struct http_txn *txn = s->txn;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1661 struct chunk auth_method;
1662 struct hdr_ctx ctx;
1663 char *h, *p;
1664 int len;
1665
1666#ifdef DEBUG_AUTH
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1667 printf("Auth for stream %p: %d\n", s, txn->auth.method);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1668#endif
1669
1670 if (txn->auth.method == HTTP_AUTH_WRONG)
1671 return 0;
1672
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1673 txn->auth.method = HTTP_AUTH_WRONG;
1674
1675 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1676
1677 if (txn->flags & TX_USE_PX_CONN) {
1678 h = "Proxy-Authorization";
1679 len = strlen(h);
1680 } else {
1681 h = "Authorization";
1682 len = strlen(h);
1683 }
1684
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1685 if (!http_find_header2(h, len, s->req.buf->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1686 return 0;
1687
1688 h = ctx.line + ctx.val;
1689
1690 p = memchr(h, ' ', ctx.vlen);
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1691 len = p - h;
1692 if (!p || len <= 0)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1693 return 0;
1694
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]1695 if (chunk_initlen(&auth_method, h, 0, len) != 1)
1696 return 0;
1697
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1698 chunk_initlen(&txn->auth.method_data, p + 1, 0, ctx.vlen - len - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1699
1700 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1701
1702 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1703 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1704
1705 if (len < 0)
1706 return 0;
1707
1708
1709 get_http_auth_buff[len] = '\0';
1710
1711 p = strchr(get_http_auth_buff, ':');
1712
1713 if (!p)
1714 return 0;
1715
1716 txn->auth.user = get_http_auth_buff;
1717 *p = '\0';
1718 txn->auth.pass = p+1;
1719
1720 txn->auth.method = HTTP_AUTH_BASIC;
1721 return 1;
1722 }
1723
1724 return 0;
1725}
1726
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1727
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1728/*
1729 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1730 * depending on the initial msg->msg_state. The caller is responsible for
1731 * ensuring that the message does not wrap. The function can be preempted
1732 * everywhere when data are missing and recalled at the exact same location
1733 * with no information loss. The message may even be realigned between two
1734 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1735 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1736 * fields. Note that msg->sol will be initialized after completing the first
1737 * state, so that none of the msg pointers has to be initialized prior to the
1738 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1739 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1740void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1741{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1742 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1743 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1744 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1745
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1746 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1747 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1748 ptr = buf->p + msg->next;
1749 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1750
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1751 if (unlikely(ptr >= end))
1752 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1753
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1754 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1755 /*
1756 * First, states that are specific to the response only.
1757 * We check them first so that request and headers are
1758 * closer to each other (accessed more often).
1759 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1760 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1761 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1762 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1763 /* we have a start of message, but we have to check
1764 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1765 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1766 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1767 if (unlikely(ptr != buf->p)) {
1768 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1769 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1770 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1771 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1772 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1773 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1774 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1775 hdr_idx_init(idx);
1776 state = HTTP_MSG_RPVER;
1777 goto http_msg_rpver;
1778 }
1779
1780 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1781 goto http_msg_invalid;
1782
1783 if (unlikely(*ptr == '\n'))
1784 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1785 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1786 /* stop here */
1787
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1788 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1789 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1790 EXPECT_LF_HERE(ptr, http_msg_invalid);
1791 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1792 /* stop here */
1793
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1794 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1795 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1796 case HTTP_MSG_RPVER_SP:
1797 case HTTP_MSG_RPCODE:
1798 case HTTP_MSG_RPCODE_SP:
1799 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1800 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1801 state, ptr, end,
1802 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1803 if (unlikely(!ptr))
1804 return;
1805
1806 /* we have a full response and we know that we have either a CR
1807 * or an LF at <ptr>.
1808 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1809 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1810
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1811 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1812 if (likely(*ptr == '\r'))
1813 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1814 goto http_msg_rpline_end;
1815
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1816 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1817 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1818 /* msg->sol must point to the first of CR or LF. */
1819 EXPECT_LF_HERE(ptr, http_msg_invalid);
1820 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1821 /* stop here */
1822
1823 /*
1824 * Second, states that are specific to the request only
1825 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1826 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1827 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1828 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1829 /* we have a start of message, but we have to check
1830 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1831 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1832 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1833 if (likely(ptr != buf->p)) {
1834 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1835 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1836 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1837 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1838 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1839 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1840 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1841 state = HTTP_MSG_RQMETH;
1842 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1843 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1844
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1845 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1846 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1847
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1848 if (unlikely(*ptr == '\n'))
1849 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1850 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1851 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1852
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1853 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1854 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1855 EXPECT_LF_HERE(ptr, http_msg_invalid);
1856 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1857 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1858
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1859 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1860 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1861 case HTTP_MSG_RQMETH_SP:
1862 case HTTP_MSG_RQURI:
1863 case HTTP_MSG_RQURI_SP:
1864 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1865 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1866 state, ptr, end,
1867 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1868 if (unlikely(!ptr))
1869 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1870
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1871 /* we have a full request and we know that we have either a CR
1872 * or an LF at <ptr>.
1873 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1874 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1875
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1876 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1877 if (likely(*ptr == '\r'))
1878 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1879 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1880
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1881 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1882 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1883 /* check for HTTP/0.9 request : no version information available.
1884 * msg->sol must point to the first of CR or LF.
1885 */
1886 if (unlikely(msg->sl.rq.v_l == 0))
1887 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1888
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1889 EXPECT_LF_HERE(ptr, http_msg_invalid);
1890 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1891 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1892
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1893 /*
1894 * Common states below
1895 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1896 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1897 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1898 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1899 if (likely(!HTTP_IS_CRLF(*ptr))) {
1900 goto http_msg_hdr_name;
1901 }
1902
1903 if (likely(*ptr == '\r'))
1904 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1905 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1906
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1907 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1908 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1909 /* assumes msg->sol points to the first char */
1910 if (likely(HTTP_IS_TOKEN(*ptr)))
1911 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1912
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1913 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1914 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1915
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1916 if (likely(msg->err_pos < -1) || *ptr == '\n')
1917 goto http_msg_invalid;
1918
1919 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1920 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1921
1922 /* and we still accept this non-token character */
1923 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1924
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1925 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1926 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1927 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1928 if (likely(HTTP_IS_SPHT(*ptr)))
1929 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1930
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1931 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1932 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1933
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1934 if (likely(!HTTP_IS_CRLF(*ptr))) {
1935 goto http_msg_hdr_val;
1936 }
1937
1938 if (likely(*ptr == '\r'))
1939 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1940 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1941
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1942 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1943 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1944 EXPECT_LF_HERE(ptr, http_msg_invalid);
1945 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1946
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1947 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1948 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1949 if (likely(HTTP_IS_SPHT(*ptr))) {
1950 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1951 for (; buf->p + msg->sov < ptr; msg->sov++)
1952 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1953 goto http_msg_hdr_l1_sp;
1954 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1955 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1956 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1957 goto http_msg_complete_header;
1958
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1959 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1960 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1961 /* assumes msg->sol points to the first char, and msg->sov
1962 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1963 */
Willy Tarreau0431f9d2016-11-05 17:35:40 +0100[diff] [blame]1964
1965 /* speedup: we'll skip packs of 4 or 8 bytes not containing bytes 0x0D
1966 * and lower. In fact since most of the time is spent in the loop, we
1967 * also remove the sign bit test so that bytes 0x8e..0x0d break the
1968 * loop, but we don't care since they're very rare in header values.
1969 */
1970#if defined(__x86_64__)
1971 while (ptr <= end - sizeof(long)) {
1972 if ((*(long *)ptr - 0x0e0e0e0e0e0e0e0eULL) & 0x8080808080808080ULL)
1973 goto http_msg_hdr_val2;
1974 ptr += sizeof(long);
1975 }
1976#endif
1977#if defined(__x86_64__) || \
1978 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
1979 defined(__ARM_ARCH_7A__)
1980 while (ptr <= end - sizeof(int)) {
1981 if ((*(int*)ptr - 0x0e0e0e0e) & 0x80808080)
1982 goto http_msg_hdr_val2;
1983 ptr += sizeof(int);
1984 }
1985#endif
1986 http_msg_hdr_val2:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1987 if (likely(!HTTP_IS_CRLF(*ptr)))
Willy Tarreau0431f9d2016-11-05 17:35:40 +0100[diff] [blame]1988 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val2, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1989
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1990 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1991 /* Note: we could also copy eol into ->eoh so that we have the
1992 * real header end in case it ends with lots of LWS, but is this
1993 * really needed ?
1994 */
1995 if (likely(*ptr == '\r'))
1996 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1997 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1998
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1999 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2000 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2001 EXPECT_LF_HERE(ptr, http_msg_invalid);
2002 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2003
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2004 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2005 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2006 if (unlikely(HTTP_IS_SPHT(*ptr))) {
2007 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2008 for (; buf->p + msg->eol < ptr; msg->eol++)
2009 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2010 goto http_msg_hdr_val;
2011 }
2012 http_msg_complete_header:
2013 /*
2014 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2015 * Assumes msg->sol points to the first char, msg->sov points
2016 * to the first character of the value and msg->eol to the
2017 * first CR or LF so we know how the line ends. We insert last
2018 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2019 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2020 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2021 idx, idx->tail) < 0))
2022 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2023
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2024 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2025 if (likely(!HTTP_IS_CRLF(*ptr))) {
2026 goto http_msg_hdr_name;
2027 }
2028
2029 if (likely(*ptr == '\r'))
2030 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
2031 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2032
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2033 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2034 http_msg_last_lf:
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]2035 /* Assumes msg->sol points to the first of either CR or LF.
2036 * Sets ->sov and ->next to the total header length, ->eoh to
2037 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
2038 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2039 EXPECT_LF_HERE(ptr, http_msg_invalid);
2040 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2041 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]2042 msg->eoh = msg->sol;
2043 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]2044 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2045 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2046 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]2047
2048 case HTTP_MSG_ERROR:
2049 /* this may only happen if we call http_msg_analyser() twice with an error */
2050 break;
2051
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2052 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]2053#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2054 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
2055 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2056#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]2057 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2058 }
2059 http_msg_ood:
2060 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2061 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2062 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2063 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2064
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2065 http_msg_invalid:
2066 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2067 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2068 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2069 return;
2070}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]2071
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2072/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
2073 * conversion succeeded, 0 in case of error. If the request was already 1.X,
2074 * nothing is done and 1 is returned.
2075 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2076static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2077{
2078 int delta;
2079 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2080 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2081
2082 if (msg->sl.rq.v_l != 0)
2083 return 1;
2084
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]2085 /* RFC 1945 allows only GET for HTTP/0.9 requests */
2086 if (txn->meth != HTTP_METH_GET)
2087 return 0;
2088
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2089 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2090
2091 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]2092 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
2093 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2094 }
2095 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2096 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2097 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2098 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]2099 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2100 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2101 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2102 NULL, NULL);
2103 if (unlikely(!cur_end))
2104 return 0;
2105
2106 /* we have a full HTTP/1.0 request now and we know that
2107 * we have either a CR or an LF at <ptr>.
2108 */
2109 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
2110 return 1;
2111}
2112
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2113/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2114 * and "keep-alive" values. If we already know that some headers may safely
2115 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2116 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
2117 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2118 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2119 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
2120 * found, and TX_CON_*_SET is adjusted depending on what is left so only
2121 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2122 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2123 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2124void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2125{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2126 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2127 const char *hdr_val = "Connection";
2128 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2129
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2130 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2131 return;
2132
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2133 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2134 hdr_val = "Proxy-Connection";
2135 hdr_len = 16;
2136 }
2137
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2138 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2139 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2140 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2141 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2142 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2143 if (to_del & 2)
2144 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2145 else
2146 txn->flags |= TX_CON_KAL_SET;
2147 }
2148 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2149 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2150 if (to_del & 1)
2151 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2152 else
2153 txn->flags |= TX_CON_CLO_SET;
2154 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2155 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
2156 txn->flags |= TX_HDR_CONN_UPG;
2157 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2158 }
2159
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2160 txn->flags |= TX_HDR_CONN_PRS;
2161 return;
2162}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2163
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2164/* Apply desired changes on the Connection: header. Values may be removed and/or
2165 * added depending on the <wanted> flags, which are exclusively composed of
2166 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
2167 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
2168 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2169void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2170{
2171 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2172 const char *hdr_val = "Connection";
2173 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2174
2175 ctx.idx = 0;
2176
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2177
2178 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2179 hdr_val = "Proxy-Connection";
2180 hdr_len = 16;
2181 }
2182
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2183 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2184 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2185 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2186 if (wanted & TX_CON_KAL_SET)
2187 txn->flags |= TX_CON_KAL_SET;
2188 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2189 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2190 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2191 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2192 if (wanted & TX_CON_CLO_SET)
2193 txn->flags |= TX_CON_CLO_SET;
2194 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2195 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2196 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2197 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2198
2199 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
2200 return;
2201
2202 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
2203 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2204 hdr_val = "Connection: close";
2205 hdr_len = 17;
2206 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2207 hdr_val = "Proxy-Connection: close";
2208 hdr_len = 23;
2209 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2210 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2211 }
2212
2213 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
2214 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2215 hdr_val = "Connection: keep-alive";
2216 hdr_len = 22;
2217 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2218 hdr_val = "Proxy-Connection: keep-alive";
2219 hdr_len = 28;
2220 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2221 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2222 }
2223 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2224}
2225
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2226/* Parse the chunk size at msg->next. Once done, caller should adjust ->next to
2227 * point to the first byte of data after the chunk size, so that we know we can
2228 * forward exactly msg->next bytes. msg->sol contains the exact number of bytes
2229 * forming the chunk size. That way it is always possible to differentiate
2230 * between the start of the body and the start of the data. Return the number
2231 * of byte parsed on success, 0 when some data is missing, <0 on error. Note:
2232 * this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2233 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2234static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2235{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2236 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2237 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2238 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2239 const char *end = buf->data + buf->size;
2240 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2241 unsigned int chunk = 0;
2242
2243 /* The chunk size is in the following form, though we are only
2244 * interested in the size and CRLF :
2245 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
2246 */
2247 while (1) {
2248 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2249 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2250 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2251 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2252 if (c < 0) /* not a hex digit anymore */
2253 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2254 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2255 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]2256 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2257 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2258 chunk = (chunk << 4) + c;
2259 }
2260
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2261 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2262 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2263 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2264
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]2265 while (HTTP_IS_SPHT(*ptr)) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2266 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2267 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2268 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2269 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2270 }
2271
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2272 /* Up to there, we know that at least one byte is present at *ptr. Check
2273 * for the end of chunk size.
2274 */
2275 while (1) {
2276 if (likely(HTTP_IS_CRLF(*ptr))) {
2277 /* we now have a CR or an LF at ptr */
2278 if (likely(*ptr == '\r')) {
2279 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2280 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2281 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2282 return 0;
2283 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2284
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2285 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2286 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2287 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2288 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2289 /* done */
2290 break;
2291 }
2292 else if (*ptr == ';') {
2293 /* chunk extension, ends at next CRLF */
2294 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2295 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2296 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2297 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2298
2299 while (!HTTP_IS_CRLF(*ptr)) {
2300 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2301 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2302 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2303 return 0;
2304 }
2305 /* we have a CRLF now, loop above */
2306 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2307 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2308 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2309 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2310 }
2311
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2312 /* OK we found our CRLF and now <ptr> points to the next byte, which may
2313 * or may not be present. We save the number of bytes parsed into
2314 * msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2315 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2316 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2317 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2318 msg->sol += buf->size;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2319 msg->chunk_len = chunk;
2320 msg->body_len += chunk;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2321 return msg->sol;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2322 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2323 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2324 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2325}
2326
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2327/* This function skips trailers in the buffer associated with HTTP message
2328 * <msg>. The first visited position is msg->next. If the end of the trailers is
2329 * found, the function returns >0. So, the caller can automatically schedul it
2330 * to be forwarded, and switch msg->msg_state to HTTP_MSG_DONE. If not enough
2331 * data are available, the function does not change anything except maybe
2332 * msg->sol if it could parse some lines, and returns zero. If a parse error
2333 * is encountered, the function returns < 0 and does not change anything except
2334 * maybe msg->sol. Note that the message must already be in HTTP_MSG_TRAILERS
2335 * state before calling this function, which implies that all non-trailers data
2336 * have already been scheduled for forwarding, and that msg->next exactly
2337 * matches the length of trailers already parsed and not forwarded. It is also
2338 * important to note that this function is designed to be able to parse wrapped
2339 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2340 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2341static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2342{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2343 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2344
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2345 /* we have msg->next which points to next line. Look for CRLF. But
2346 * first, we reset msg->sol */
2347 msg->sol = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2348 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2349 const char *p1 = NULL, *p2 = NULL;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2350 const char *start = b_ptr(buf, msg->next + msg->sol);
2351 const char *stop = bi_end(buf);
2352 const char *ptr = start;
2353 int bytes = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2354
2355 /* scan current line and stop at LF or CRLF */
2356 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2357 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2358 return 0;
2359
2360 if (*ptr == '\n') {
2361 if (!p1)
2362 p1 = ptr;
2363 p2 = ptr;
2364 break;
2365 }
2366
2367 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2368 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2369 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2370 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2371 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2372 p1 = ptr;
2373 }
2374
2375 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2376 if (ptr >= buf->data + buf->size)
2377 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2378 }
2379
2380 /* after LF; point to beginning of next line */
2381 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2382 if (p2 >= buf->data + buf->size)
2383 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2384
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2385 bytes = p2 - start;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2386 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2387 bytes += buf->size;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2388 msg->sol += bytes;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2389
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2390 /* LF/CRLF at beginning of line => end of trailers at p2.
2391 * Everything was scheduled for forwarding, there's nothing left
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2392 * from this message. */
2393 if (p1 == start)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2394 return 1;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2395
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2396 /* OK, next line then */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2397 }
2398}
2399
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2400/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
2401 * a possible LF alone at the end of a chunk. The caller should adjust msg->next
2402 * in order to include this part into the next forwarding phase. Note that the
2403 * caller must ensure that ->p points to the first byte to parse. It returns
2404 * the number of bytes parsed on success, so the caller can set msg_state to
2405 * HTTP_MSG_CHUNK_SIZE. If not enough data are available, the function does not
2406 * change anything and returns zero. If a parse error is encountered, the
2407 * function returns < 0. Note: this function is designed to parse wrapped CRLF
2408 * at the end of the buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2409 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2410static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2411{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2412 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2413 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2414 int bytes;
2415
2416 /* NB: we'll check data availabilty at the end. It's not a
2417 * problem because whatever we match first will be checked
2418 * against the correct length.
2419 */
2420 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2421 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2422 if (*ptr == '\r') {
2423 bytes++;
2424 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2425 if (ptr >= buf->data + buf->size)
2426 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2427 }
2428
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2429 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2430 return 0;
2431
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2432 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2433 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2434 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2435 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2436 return bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2437}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2438
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2439/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2440 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2441 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2442 * Unparsable qvalues return 1000 as "q=1.000".
2443 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2444int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2445{
2446 int q = 1000;
2447
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2448 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2449 goto out;
2450 q = (*qvalue++ - '0') * 1000;
2451
2452 if (*qvalue++ != '.')
2453 goto out;
2454
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2455 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2456 goto out;
2457 q += (*qvalue++ - '0') * 100;
2458
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2459 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2460 goto out;
2461 q += (*qvalue++ - '0') * 10;
2462
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2463 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2464 goto out;
2465 q += (*qvalue++ - '0') * 1;
2466 out:
2467 if (q > 1000)
2468 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2469 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2470 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2471 return q;
2472}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2473
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2474void http_adjust_conn_mode(struct stream *s, struct http_txn *txn, struct http_msg *msg)
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2475{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2476 struct proxy *fe = strm_fe(s);
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2477 int tmp = TX_CON_WANT_KAL;
2478
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2479 if (!((fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2480 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2481 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2482 tmp = TX_CON_WANT_TUN;
2483
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2484 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2485 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2486 tmp = TX_CON_WANT_TUN;
2487 }
2488
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2489 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2490 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2491 /* option httpclose + server_close => forceclose */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2492 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2493 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2494 tmp = TX_CON_WANT_CLO;
2495 else
2496 tmp = TX_CON_WANT_SCL;
2497 }
2498
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2499 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2500 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2501 tmp = TX_CON_WANT_CLO;
2502
2503 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2504 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2505
2506 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2507 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2508 /* parse the Connection header and possibly clean it */
2509 int to_del = 0;
2510 if ((msg->flags & HTTP_MSGF_VER_11) ||
2511 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2512 !((fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2513 to_del |= 2; /* remove "keep-alive" */
2514 if (!(msg->flags & HTTP_MSGF_VER_11))
2515 to_del |= 1; /* remove "close" */
2516 http_parse_connection_header(txn, msg, to_del);
2517 }
2518
2519 /* check if client or config asks for explicit close in KAL/SCL */
2520 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2521 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2522 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2523 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2524 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2525 fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2526 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2527}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2528
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2529/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2530 * processing can continue on next analysers, or zero if it either needs more
2531 * data or wants to immediately abort the request (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2532 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req.analysers
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2533 * when it has nothing left to do, and may remove any analyser when it wants to
2534 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2535 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2536int http_wait_for_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2537{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2538 /*
2539 * We will parse the partial (or complete) lines.
2540 * We will check the request syntax, and also join multi-line
2541 * headers. An index of all the lines will be elaborated while
2542 * parsing.
2543 *
2544 * For the parsing, we use a 28 states FSM.
2545 *
2546 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2547 * req->buf->p = beginning of request
2548 * req->buf->p + msg->eoh = end of processed headers / start of current one
2549 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2550 * msg->eol = end of current header or line (LF or CRLF)
2551 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2552 *
2553 * At end of parsing, we may perform a capture of the error (if any), and
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2554 * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2555 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2556 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2557 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2558
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2559 int cur_idx;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2560 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2561 struct http_txn *txn = s->txn;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2562 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2563 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2564
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2565 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2566 now_ms, __FUNCTION__,
2567 s,
2568 req,
2569 req->rex, req->wex,
2570 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2571 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2572 req->analysers);
2573
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2574 /* we're speaking HTTP here, so let's speak HTTP to the client */
2575 s->srv_error = http_return_srv_error;
2576
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2577 /* There's a protected area at the end of the buffer for rewriting
2578 * purposes. We don't want to start to parse the request if the
2579 * protected area is affected, because we may have to move processed
2580 * data later, which is much more complicated.
2581 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2582 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200[diff] [blame]2583
2584 /* This point is executed when some data is avalaible for analysis,
2585 * so we log the end of the idle time. */
2586 if (s->logs.t_idle == -1)
2587 s->logs.t_idle = tv_ms_elapsed(&s->logs.tv_accept, &now) - s->logs.t_handshake;
2588
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2589 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]2590 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2591 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2592 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2593 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2594 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2595 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2596 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2597 return 0;
2598 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2599 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2600 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2601 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2602 }
2603
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2604 /* Note that we have the same problem with the response ; we
2605 * may want to send a redirect, error or anything which requires
2606 * some spare space. So we'll ensure that we have at least
2607 * maxrewrite bytes available in the response buffer before
2608 * processing that one. This will only affect pipelined
2609 * keep-alive requests.
2610 */
2611 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2612 unlikely(!channel_is_rewritable(&s->res) ||
2613 bi_end(s->res.buf) < b_ptr(s->res.buf, txn->rsp.next) ||
2614 bi_end(s->res.buf) > s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)) {
2615 if (s->res.buf->o) {
2616 if (s->res.flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2617 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2618 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2619 channel_dont_connect(req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2620 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
2621 s->res.flags |= CF_WAKE_WRITE;
2622 s->res.analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2623 return 0;
2624 }
2625 }
2626
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2627 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2628 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2629 }
2630
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2631 /* 1: we might have to print this header in debug mode */
2632 if (unlikely((global.mode & MODE_DEBUG) &&
2633 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]2634 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2635 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2636
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2637 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2638 /* this is a bit complex : in case of error on the request line,
2639 * we know that rq.l is still zero, so we display only the part
2640 * up to the end of the line (truncated by debug_hdr).
2641 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2642 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2643 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2644
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2645 sol += hdr_idx_first_pos(&txn->hdr_idx);
2646 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2647
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2648 while (cur_idx) {
2649 eol = sol + txn->hdr_idx.v[cur_idx].len;
2650 debug_hdr("clihdr", s, sol, eol);
2651 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2652 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2653 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2654 }
2655
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2656
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2657 /*
2658 * Now we quickly check if we have found a full valid request.
2659 * If not so, we check the FD and buffer states before leaving.
2660 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2661 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2662 * requests are checked first. When waiting for a second request
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2663 * on a keep-alive stream, if we encounter and error, close, t/o,
2664 * we note the error in the stream flags but don't set any state.
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2665 * Since the error will be noted there, it will not be counted by
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2666 * process_stream() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2667 * Last, we may increase some tracked counters' http request errors on
2668 * the cases that are deliberately the client's fault. For instance,
2669 * a timeout or connection reset is not counted as an error. However
2670 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2671 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2672
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2673 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2674 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2675 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2676 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2677 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2678 stream_inc_http_req_ctr(s);
2679 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2680 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2681 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2682 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2683
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2684 /* 1: Since we are in header mode, if there's no space
2685 * left for headers, we won't be able to free more
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2686 * later, so the stream will never terminate. We
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2687 * must terminate it now.
2688 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2689 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2690 /* FIXME: check if URI is set and return Status
2691 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2692 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2693 stream_inc_http_req_ctr(s);
2694 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2695 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2696 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2697 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2698 goto return_bad_req;
2699 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2700
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2701 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2702 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2703 if (!(s->flags & SF_ERR_MASK))
2704 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2705
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2706 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2707 goto failed_keep_alive;
2708
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2709 if (sess->fe->options & PR_O_IGNORE_PRB)
2710 goto failed_keep_alive;
2711
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2712 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2713 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2714 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2715 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2716 }
2717
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2718 txn->status = 400;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2719 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2720 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2721 req->analysers &= AN_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2722 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2723 proxy_inc_fe_req_ctr(sess->fe);
2724 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2725 if (sess->listener->counters)
2726 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2727
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2728 if (!(s->flags & SF_FINST_MASK))
2729 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2730 return 0;
2731 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2732
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2733 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2734 else if (req->flags & CF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2735 if (!(s->flags & SF_ERR_MASK))
2736 s->flags |= SF_ERR_CLITO;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2737
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2738 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2739 goto failed_keep_alive;
2740
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2741 if (sess->fe->options & PR_O_IGNORE_PRB)
2742 goto failed_keep_alive;
2743
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2744 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2745 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2746 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2747 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2748 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2749 txn->status = 408;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2750 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2751 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2752 req->analysers &= AN_FLT_END;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2753
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2754 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2755 proxy_inc_fe_req_ctr(sess->fe);
2756 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2757 if (sess->listener->counters)
2758 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2759
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2760 if (!(s->flags & SF_FINST_MASK))
2761 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2762 return 0;
2763 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2764
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2765 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2766 else if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2767 if (!(s->flags & SF_ERR_MASK))
2768 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2769
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2770 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2771 goto failed_keep_alive;
2772
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2773 if (sess->fe->options & PR_O_IGNORE_PRB)
2774 goto failed_keep_alive;
2775
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2776 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2777 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2778 txn->status = 400;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2779 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2780 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2781 req->analysers &= AN_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2782 stream_inc_http_err_ctr(s);
2783 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2784 proxy_inc_fe_req_ctr(sess->fe);
2785 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2786 if (sess->listener->counters)
2787 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2788
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2789 if (!(s->flags & SF_FINST_MASK))
2790 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2791 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2792 }
2793
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2794 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2795 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2796 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2797#ifdef TCP_QUICKACK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2798 if (sess->listener->options & LI_O_NOQUICKACK && req->buf->i &&
2799 objt_conn(sess->origin) && conn_ctrl_ready(__objt_conn(sess->origin))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2800 /* We need more data, we have to re-enable quick-ack in case we
2801 * previously disabled it, otherwise we might cause the client
2802 * to delay next data.
2803 */
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2804 setsockopt(__objt_conn(sess->origin)->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2805 }
2806#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2807
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2808 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2809 /* If the client starts to talk, let's fall back to
2810 * request timeout processing.
2811 */
2812 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2813 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2814 }
2815
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2816 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2817 if (!tick_isset(req->analyse_exp)) {
2818 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2819 (txn->flags & TX_WAIT_NEXT_RQ) &&
2820 tick_isset(s->be->timeout.httpka))
2821 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2822 else
2823 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2824 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2825
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2826 /* we're not ready yet */
2827 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2828
2829 failed_keep_alive:
2830 /* Here we process low-level errors for keep-alive requests. In
2831 * short, if the request is not the first one and it experiences
2832 * a timeout, read error or shutdown, we just silently close so
2833 * that the client can try again.
2834 */
2835 txn->status = 0;
2836 msg->msg_state = HTTP_MSG_RQBEFORE;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2837 req->analysers &= AN_FLT_END;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2838 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2839 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2840 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2841 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2842 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2843 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2844
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2845 /* OK now we have a complete HTTP request with indexed headers. Let's
2846 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2847 * later. At this point, we have the last CRLF at req->buf->data + msg->eoh.
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2848 * If the request is in HTTP/0.9 form, the rule is still true, and eoh
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2849 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2850 * byte after the last LF. msg->sov points to the first byte of data.
2851 * msg->eol cannot be trusted because it may have been left uninitialized
2852 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2853 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2854
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2855 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2856 proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2857
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2858 if (txn->flags & TX_WAIT_NEXT_RQ) {
2859 /* kill the pending keep-alive timeout */
2860 txn->flags &= ~TX_WAIT_NEXT_RQ;
2861 req->analyse_exp = TICK_ETERNITY;
2862 }
2863
2864
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2865 /* Maybe we found in invalid header name while we were configured not
2866 * to block on that, so we have to capture it now.
2867 */
2868 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2869 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2870
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2871 /*
2872 * 1: identify the method
2873 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2874 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2875
2876 /* we can make use of server redirect on GET and HEAD */
2877 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2878 s->flags |= SF_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2879
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2880 /*
2881 * 2: check if the URI matches the monitor_uri.
2882 * We have to do this for every request which gets in, because
2883 * the monitor-uri is defined by the frontend.
2884 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2885 if (unlikely((sess->fe->monitor_uri_len != 0) &&
2886 (sess->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2887 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2888 sess->fe->monitor_uri,
2889 sess->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2890 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2891 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2892 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2893 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2894
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2895 s->flags |= SF_MONITOR;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2896 sess->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2897
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2898 /* Check if we want to fail this monitor request or not */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2899 list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2900 int ret = acl_exec_cond(cond, sess->fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2901
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2902 ret = acl_pass(ret);
2903 if (cond->pol == ACL_COND_UNLESS)
2904 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2905
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2906 if (ret) {
2907 /* we fail this request, let's return 503 service unavail */
2908 txn->status = 503;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2909 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_503));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2910 if (!(s->flags & SF_ERR_MASK))
2911 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2912 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2913 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2914 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2915
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2916 /* nothing to fail, let's reply normaly */
2917 txn->status = 200;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2918 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_200));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2919 if (!(s->flags & SF_ERR_MASK))
2920 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2921 goto return_prx_cond;
2922 }
2923
2924 /*
2925 * 3: Maybe we have to copy the original REQURI for the logs ?
2926 * Note: we cannot log anymore if the request has been
2927 * classified as invalid.
2928 */
2929 if (unlikely(s->logs.logwait & LW_REQ)) {
2930 /* we have a complete HTTP request that we must log */
2931 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2932 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2933
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2934 if (urilen >= REQURI_LEN)
2935 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2936 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2937 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2938
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2939 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2940 s->do_log(s);
2941 } else {
2942 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2943 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2944 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2945
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2946 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
2947 * exactly one digit "." one digit. This check may be disabled using
2948 * option accept-invalid-http-request.
2949 */
2950 if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) {
2951 if (msg->sl.rq.v_l != 8) {
2952 msg->err_pos = msg->sl.rq.v;
2953 goto return_bad_req;
2954 }
2955
2956 if (req->buf->p[msg->sl.rq.v + 4] != '/' ||
2957 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 5]) ||
2958 req->buf->p[msg->sl.rq.v + 6] != '.' ||
2959 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 7])) {
2960 msg->err_pos = msg->sl.rq.v + 4;
2961 goto return_bad_req;
2962 }
2963 }
Willy Tarreau13317662015-05-01 13:47:08 +0200[diff] [blame]2964 else {
2965 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
2966 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
2967 goto return_bad_req;
2968 }
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2969
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2970 /* ... and check if the request is HTTP/1.1 or above */
2971 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2972 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2973 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2974 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2975 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2976
2977 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2978 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL | TX_HDR_CONN_UPG);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2979
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2980 /* if the frontend has "option http-use-proxy-header", we'll check if
2981 * we have what looks like a proxied connection instead of a connection,
2982 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2983 * Note that this is *not* RFC-compliant, however browsers and proxies
2984 * happen to do that despite being non-standard :-(
2985 * We consider that a request not beginning with either '/' or '*' is
2986 * a proxied connection, which covers both "scheme://location" and
2987 * CONNECT ip:port.
2988 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2989 if ((sess->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2990 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2991 txn->flags |= TX_USE_PX_CONN;
2992
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2993 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2994 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2995
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2996 /* 5: we may need to capture headers */
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2997 if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2998 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2999 s->req_cap, sess->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3000
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3001 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
3002 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3003 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3004 * The length of a message body is determined by one of the following
3005 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3006 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3007 * 1. Any response to a HEAD request and any response with a 1xx
3008 * (Informational), 204 (No Content), or 304 (Not Modified) status
3009 * code is always terminated by the first empty line after the
3010 * header fields, regardless of the header fields present in the
3011 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3012 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3013 * 2. Any 2xx (Successful) response to a CONNECT request implies that
3014 * the connection will become a tunnel immediately after the empty
3015 * line that concludes the header fields. A client MUST ignore any
3016 * Content-Length or Transfer-Encoding header fields received in
3017 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3018 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3019 * 3. If a Transfer-Encoding header field is present and the chunked
3020 * transfer coding (Section 4.1) is the final encoding, the message
3021 * body length is determined by reading and decoding the chunked
3022 * data until the transfer coding indicates the data is complete.
3023 *
3024 * If a Transfer-Encoding header field is present in a response and
3025 * the chunked transfer coding is not the final encoding, the
3026 * message body length is determined by reading the connection until
3027 * it is closed by the server. If a Transfer-Encoding header field
3028 * is present in a request and the chunked transfer coding is not
3029 * the final encoding, the message body length cannot be determined
3030 * reliably; the server MUST respond with the 400 (Bad Request)
3031 * status code and then close the connection.
3032 *
3033 * If a message is received with both a Transfer-Encoding and a
3034 * Content-Length header field, the Transfer-Encoding overrides the
3035 * Content-Length. Such a message might indicate an attempt to
3036 * perform request smuggling (Section 9.5) or response splitting
3037 * (Section 9.4) and ought to be handled as an error. A sender MUST
3038 * remove the received Content-Length field prior to forwarding such
3039 * a message downstream.
3040 *
3041 * 4. If a message is received without Transfer-Encoding and with
3042 * either multiple Content-Length header fields having differing
3043 * field-values or a single Content-Length header field having an
3044 * invalid value, then the message framing is invalid and the
3045 * recipient MUST treat it as an unrecoverable error. If this is a
3046 * request message, the server MUST respond with a 400 (Bad Request)
3047 * status code and then close the connection. If this is a response
3048 * message received by a proxy, the proxy MUST close the connection
3049 * to the server, discard the received response, and send a 502 (Bad
3050 * Gateway) response to the client. If this is a response message
3051 * received by a user agent, the user agent MUST close the
3052 * connection to the server and discard the received response.
3053 *
3054 * 5. If a valid Content-Length header field is present without
3055 * Transfer-Encoding, its decimal value defines the expected message
3056 * body length in octets. If the sender closes the connection or
3057 * the recipient times out before the indicated number of octets are
3058 * received, the recipient MUST consider the message to be
3059 * incomplete and close the connection.
3060 *
3061 * 6. If this is a request message and none of the above are true, then
3062 * the message body length is zero (no message body is present).
3063 *
3064 * 7. Otherwise, this is a response message without a declared message
3065 * body length, so the message body length is determined by the
3066 * number of octets received prior to the server closing the
3067 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3068 */
3069
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3070 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3071 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]3072 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3073 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3074 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
3075 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3076 /* chunked not last, return badreq */
3077 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3078 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3079 }
3080
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]3081 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3082 ctx.idx = 0;
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]3083 if (msg->flags & HTTP_MSGF_TE_CHNK) {
3084 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
3085 http_remove_header2(msg, &txn->hdr_idx, &ctx);
3086 }
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3087 else while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3088 signed long long cl;
3089
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3090 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3091 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3092 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3093 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3094
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3095 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3096 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3097 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3098 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3099
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3100 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3101 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3102 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3103 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3104
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3105 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3106 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3107 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3108 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3109
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3110 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3111 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3112 }
3113
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3114 /* even bodyless requests have a known length */
3115 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3116
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3117 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
3118 * only change if both the request and the config reference something else.
3119 * Option httpclose by itself sets tunnel mode where headers are mangled.
3120 * However, if another mode is set, it will affect it (eg: server-close/
3121 * keep-alive + httpclose = close). Note that we avoid to redo the same work
3122 * if FE and BE have the same settings (common). The method consists in
3123 * checking if options changed between the two calls (implying that either
3124 * one is non-null, or one of them is non-null and we are there for the first
3125 * time.
3126 */
3127 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3128 ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]3129 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3130
Willy Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]3131 /* we may have to wait for the request's body */
3132 if ((s->be->options & PR_O_WREQ_BODY) &&
3133 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
3134 req->analysers |= AN_REQ_HTTP_BODY;
3135
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3136 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3137 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3138 req->analyse_exp = TICK_ETERNITY;
3139 return 1;
3140
3141 return_bad_req:
3142 /* We centralize bad requests processing here */
3143 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3144 /* we detected a parsing error. We want to archive this request
3145 * in the dedicated proxy area for later troubleshooting.
3146 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3147 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3148 }
3149
3150 txn->req.msg_state = HTTP_MSG_ERROR;
3151 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3152 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3153
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3154 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3155 if (sess->listener->counters)
3156 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3157
3158 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3159 if (!(s->flags & SF_ERR_MASK))
3160 s->flags |= SF_ERR_PRXCOND;
3161 if (!(s->flags & SF_FINST_MASK))
3162 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3163
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]3164 req->analysers &= AN_FLT_END;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3165 req->analyse_exp = TICK_ETERNITY;
3166 return 0;
3167}
3168
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3169
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3170/* This function prepares an applet to handle the stats. It can deal with the
3171 * "100-continue" expectation, check that admin rules are met for POST requests,
3172 * and program a response message if something was unexpected. It cannot fail
3173 * and always relies on the stats applet to complete the job. It does not touch
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3174 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3175 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3176 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3177 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3178int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3179{
3180 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3181 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3182 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3183 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3184 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3185 struct uri_auth *uri_auth = s->be->uri_auth;
3186 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3187 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3188
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3189 appctx = si_appctx(si);
3190 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3191 appctx->st1 = appctx->st2 = 0;
3192 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3193 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3194 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3195 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3196
3197 uri = msg->chn->buf->p + msg->sl.rq.u;
3198 lookup = uri + uri_auth->uri_len;
3199
3200 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3201 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3202 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3203 break;
3204 }
3205 }
3206
3207 if (uri_auth->refresh) {
3208 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3209 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3210 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3211 break;
3212 }
3213 }
3214 }
3215
3216 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3217 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3218 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3219 break;
3220 }
3221 }
3222
Willy Tarreau1e62df92016-01-11 18:57:53 +0100[diff] [blame]3223 for (h = lookup; h <= uri + msg->sl.rq.u_l - 6; h++) {
3224 if (memcmp(h, ";typed", 6) == 0) {
3225 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
3226 appctx->ctx.stats.flags |= STAT_FMT_TYPED;
3227 break;
3228 }
3229 }
3230
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3231 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3232 if (memcmp(h, ";st=", 4) == 0) {
3233 int i;
3234 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3235 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3236 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3237 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3238 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3239 break;
3240 }
3241 }
3242 break;
3243 }
3244 }
3245
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3246 appctx->ctx.stats.scope_str = 0;
3247 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3248 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3249 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3250 int itx = 0;
3251 const char *h2;
3252 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3253 const char *err;
3254
3255 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3256 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3257 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3258 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3259 itx++;
3260 h++;
3261 }
3262
3263 if (itx > STAT_SCOPE_TXT_MAXLEN)
3264 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3265 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3266
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3267 /* scope_txt = search query, appctx->ctx.stats.scope_len is always <= STAT_SCOPE_TXT_MAXLEN */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3268 memcpy(scope_txt, h2, itx);
3269 scope_txt[itx] = '\0';
3270 err = invalid_char(scope_txt);
3271 if (err) {
3272 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3273 appctx->ctx.stats.scope_str = 0;
3274 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3275 }
3276 break;
3277 }
3278 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3279
3280 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3281 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3282 int ret = 1;
3283
3284 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3285 ret = acl_exec_cond(stats_admin_rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3286 ret = acl_pass(ret);
3287 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3288 ret = !ret;
3289 }
3290
3291 if (ret) {
3292 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3293 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3294 break;
3295 }
3296 }
3297
3298 /* Was the status page requested with a POST ? */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3299 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3300 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3301 /* we'll need the request body, possibly after sending 100-continue */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3302 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE)
3303 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3304 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3305 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3306 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3307 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3308 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3309 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3310 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3311 else {
3312 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3313 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3314 }
3315
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3316 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3317 return 1;
3318}
3319
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3320/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3321 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3322 */
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3323void inet_set_tos(int fd, const struct sockaddr_storage *from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3324{
3325#ifdef IP_TOS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3326 if (from->ss_family == AF_INET)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3327 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3328#endif
3329#ifdef IPV6_TCLASS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3330 if (from->ss_family == AF_INET6) {
3331 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)from)->sin6_addr))
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3332 /* v4-mapped addresses need IP_TOS */
3333 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3334 else
3335 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3336 }
3337#endif
3338}
3339
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3340int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3341 const char* name, unsigned int name_len,
3342 const char *str, struct my_regex *re,
3343 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3344{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3345 struct hdr_ctx ctx;
3346 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3347 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3348 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3349 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3350 struct chunk *output = get_trash_chunk();
3351
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3352 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3353
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3354 /* Choose the header browsing function. */
3355 switch (action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3356 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3357 http_find_hdr_func = http_find_header2;
3358 break;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3359 case ACT_HTTP_REPLACE_HDR:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3360 http_find_hdr_func = http_find_full_header2;
3361 break;
3362 default: /* impossible */
3363 return -1;
3364 }
3365
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3366 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
3367 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3368 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3369 char *val = ctx.line + ctx.val;
3370 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3371
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3372 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
3373 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3374
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3375 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3376 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3377 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3378
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3379 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3380
3381 hdr->len += delta;
3382 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3383
3384 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3385 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3386 }
3387
3388 return 0;
3389}
3390
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3391static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3392 const char* name, unsigned int name_len,
3393 struct list *fmt, struct my_regex *re,
3394 int action)
3395{
3396 struct chunk *replace = get_trash_chunk();
3397
3398 replace->len = build_logline(s, replace->str, replace->size, fmt);
3399 if (replace->len >= replace->size - 1)
3400 return -1;
3401
3402 return http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
3403}
3404
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3405/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3406 * transaction <txn>. Returns the verdict of the first rule that prevents
3407 * further processing of the request (auth, deny, ...), and defaults to
3408 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3409 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3410 * on txn->flags if it encounters a tarpit rule. If <deny_status> is not NULL
3411 * and a deny/tarpit rule is matched, it will be filled with this rule's deny
3412 * status.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3413 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3414enum rule_result
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3415http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s, int *deny_status)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3416{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3417 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3418 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3419 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3420 struct act_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3421 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3422 const char *auth_realm;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3423 int act_flags = 0;
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3424 int len;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3425
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3426 /* If "the current_rule_list" match the executed rule list, we are in
3427 * resume condition. If a resume is needed it is always in the action
3428 * and never in the ACL or converters. In this case, we initialise the
3429 * current rule, and go to the action execution point.
3430 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3431 if (s->current_rule) {
3432 rule = s->current_rule;
3433 s->current_rule = NULL;
3434 if (s->current_rule_list == rules)
3435 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3436 }
3437 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3438
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3439 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3440
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3441 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3442 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3443 int ret;
3444
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3445 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3446 ret = acl_pass(ret);
3447
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3448 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3449 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3450
3451 if (!ret) /* condition not matched */
3452 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3453 }
3454
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3455 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3456resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3457 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3458 case ACT_ACTION_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3459 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3460
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3461 case ACT_ACTION_DENY:
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3462 if (deny_status)
3463 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3464 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3465
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3466 case ACT_HTTP_REQ_TARPIT:
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3467 txn->flags |= TX_CLTARPIT;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3468 if (deny_status)
3469 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3470 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3471
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3472 case ACT_HTTP_REQ_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3473 /* Auth might be performed on regular http-req rules as well as on stats */
3474 auth_realm = rule->arg.auth.realm;
3475 if (!auth_realm) {
3476 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3477 auth_realm = STATS_DEFAULT_REALM;
3478 else
3479 auth_realm = px->id;
3480 }
3481 /* send 401/407 depending on whether we use a proxy or not. We still
3482 * count one error, because normal browsing won't significantly
3483 * increase the counter but brute force attempts will.
3484 */
3485 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3486 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3487 http_reply_and_close(s, txn->status, &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3488 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3489 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3490
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3491 case ACT_HTTP_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3492 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3493 return HTTP_RULE_RES_BADREQ;
3494 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3495
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3496 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3497 s->task->nice = rule->arg.nice;
3498 break;
3499
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3500 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3501 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3502 inet_set_tos(cli_conn->t.sock.fd, &cli_conn->addr.from, rule->arg.tos);
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3503 break;
3504
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3505 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3506#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3507 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3508 setsockopt(cli_conn->t.sock.fd, SOL_SOCKET, SO_MARK, &rule->arg.mark, sizeof(rule->arg.mark));
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3509#endif
3510 break;
3511
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3512 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3513 s->logs.level = rule->arg.loglevel;
3514 break;
3515
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3516 case ACT_HTTP_REPLACE_HDR:
3517 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3518 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
3519 rule->arg.hdr_add.name_len,
3520 &rule->arg.hdr_add.fmt,
3521 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3522 return HTTP_RULE_RES_BADREQ;
3523 break;
3524
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3525 case ACT_HTTP_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3526 ctx.idx = 0;
3527 /* remove all occurrences of the header */
3528 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3529 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3530 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3531 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3532 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3533
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3534 case ACT_HTTP_SET_HDR:
3535 case ACT_HTTP_ADD_HDR:
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3536 /* The scope of the trash buffer must be limited to this function. The
3537 * build_logline() function can execute a lot of other function which
3538 * can use the trash buffer. So for limiting the scope of this global
3539 * buffer, we build first the header value using build_logline, and
3540 * after we store the header name.
3541 */
3542 len = rule->arg.hdr_add.name_len + 2,
3543 len += build_logline(s, trash.str + len, trash.size - len, &rule->arg.hdr_add.fmt);
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3544 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3545 trash.str[rule->arg.hdr_add.name_len] = ':';
3546 trash.str[rule->arg.hdr_add.name_len + 1] = ' ';
3547 trash.len = len;
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3548
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3549 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3550 /* remove all occurrences of the header */
3551 ctx.idx = 0;
3552 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3553 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3554 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3555 }
3556 }
3557
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3558 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3559 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3560
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3561 case ACT_HTTP_DEL_ACL:
3562 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3563 struct pat_ref *ref;
3564 char *key;
3565 int len;
3566
3567 /* collect reference */
3568 ref = pat_ref_lookup(rule->arg.map.ref);
3569 if (!ref)
3570 continue;
3571
3572 /* collect key */
3573 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3574 key = trash.str;
3575 key[len] = '\0';
3576
3577 /* perform update */
3578 /* returned code: 1=ok, 0=ko */
3579 pat_ref_delete(ref, key);
3580
3581 break;
3582 }
3583
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3584 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3585 struct pat_ref *ref;
3586 char *key;
3587 struct chunk *trash_key;
3588 int len;
3589
3590 trash_key = get_trash_chunk();
3591
3592 /* collect reference */
3593 ref = pat_ref_lookup(rule->arg.map.ref);
3594 if (!ref)
3595 continue;
3596
3597 /* collect key */
3598 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3599 key = trash_key->str;
3600 key[len] = '\0';
3601
3602 /* perform update */
3603 /* add entry only if it does not already exist */
3604 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3605 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3606
3607 break;
3608 }
3609
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3610 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3611 struct pat_ref *ref;
3612 char *key, *value;
3613 struct chunk *trash_key, *trash_value;
3614 int len;
3615
3616 trash_key = get_trash_chunk();
3617 trash_value = get_trash_chunk();
3618
3619 /* collect reference */
3620 ref = pat_ref_lookup(rule->arg.map.ref);
3621 if (!ref)
3622 continue;
3623
3624 /* collect key */
3625 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3626 key = trash_key->str;
3627 key[len] = '\0';
3628
3629 /* collect value */
3630 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3631 value = trash_value->str;
3632 value[len] = '\0';
3633
3634 /* perform update */
3635 if (pat_ref_find_elt(ref, key) != NULL)
3636 /* update entry if it exists */
3637 pat_ref_set(ref, key, value, NULL);
3638 else
3639 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3640 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3641
3642 break;
3643 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3644
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3645 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3646 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3647 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3648
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3649 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3650 case ACT_RET_ERR:
3651 case ACT_RET_CONT:
3652 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3653 case ACT_RET_STOP:
3654 return HTTP_RULE_RES_DONE;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3655 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3656 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3657 return HTTP_RULE_RES_YIELD;
3658 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3659 break;
3660
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3661 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3662 /* Note: only the first valid tracking parameter of each
3663 * applies.
3664 */
3665
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3666 if (stkctr_entry(&s->stkctr[http_trk_idx(rule->action)]) == NULL) {
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3667 struct stktable *t;
3668 struct stksess *ts;
3669 struct stktable_key *key;
3670 void *ptr;
3671
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]3672 t = rule->arg.trk_ctr.table.t;
3673 key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_REQ | SMP_OPT_FINAL, rule->arg.trk_ctr.expr, NULL);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3674
3675 if (key && (ts = stktable_get_entry(t, key))) {
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3676 stream_track_stkctr(&s->stkctr[http_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3677
3678 /* let's count a new HTTP request as it's the first time we do it */
3679 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3680 if (ptr)
3681 stktable_data_cast(ptr, http_req_cnt)++;
3682
3683 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3684 if (ptr)
3685 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3686 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3687
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3688 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3689 if (sess->fe != s->be)
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3690 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3691 }
3692 }
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3693 break;
3694
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3695 /* other flags exists, but normaly, they never be matched. */
3696 default:
3697 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3698 }
3699 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3700
3701 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3702 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3703}
3704
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3705
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3706/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
3707 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
3708 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
3709 * is returned, the process can continue the evaluation of next rule list. If
3710 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
3711 * is returned, it means the operation could not be processed and a server error
3712 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
3713 * deny rule. If *YIELD is returned, the caller must call again the function
3714 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3715 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3716static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3717http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3718{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3719 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3720 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3721 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3722 struct act_rule *rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3723 struct hdr_ctx ctx;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3724 int act_flags = 0;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3725
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3726 /* If "the current_rule_list" match the executed rule list, we are in
3727 * resume condition. If a resume is needed it is always in the action
3728 * and never in the ACL or converters. In this case, we initialise the
3729 * current rule, and go to the action execution point.
3730 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3731 if (s->current_rule) {
3732 rule = s->current_rule;
3733 s->current_rule = NULL;
3734 if (s->current_rule_list == rules)
3735 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3736 }
3737 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3738
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3739 list_for_each_entry(rule, rules, list) {
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3740
3741 /* check optional condition */
3742 if (rule->cond) {
3743 int ret;
3744
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3745 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3746 ret = acl_pass(ret);
3747
3748 if (rule->cond->pol == ACL_COND_UNLESS)
3749 ret = !ret;
3750
3751 if (!ret) /* condition not matched */
3752 continue;
3753 }
3754
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3755 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3756resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3757 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3758 case ACT_ACTION_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3759 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3760
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3761 case ACT_ACTION_DENY:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3762 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3763 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3764
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3765 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3766 s->task->nice = rule->arg.nice;
3767 break;
3768
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3769 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3770 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3771 inet_set_tos(cli_conn->t.sock.fd, &cli_conn->addr.from, rule->arg.tos);
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3772 break;
3773
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3774 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3775#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3776 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3777 setsockopt(cli_conn->t.sock.fd, SOL_SOCKET, SO_MARK, &rule->arg.mark, sizeof(rule->arg.mark));
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3778#endif
3779 break;
3780
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3781 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3782 s->logs.level = rule->arg.loglevel;
3783 break;
3784
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3785 case ACT_HTTP_REPLACE_HDR:
3786 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3787 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3788 rule->arg.hdr_add.name_len,
3789 &rule->arg.hdr_add.fmt,
3790 &rule->arg.hdr_add.re, rule->action))
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3791 return HTTP_RULE_RES_STOP; /* note: we should report an error here */
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3792 break;
3793
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3794 case ACT_HTTP_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3795 ctx.idx = 0;
3796 /* remove all occurrences of the header */
3797 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3798 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3799 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3800 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3801 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3802
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3803 case ACT_HTTP_SET_HDR:
3804 case ACT_HTTP_ADD_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3805 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3806 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3807 trash.len = rule->arg.hdr_add.name_len;
3808 trash.str[trash.len++] = ':';
3809 trash.str[trash.len++] = ' ';
3810 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3811
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3812 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3813 /* remove all occurrences of the header */
3814 ctx.idx = 0;
3815 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3816 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3817 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3818 }
3819 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3820 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3821 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3822
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3823 case ACT_HTTP_DEL_ACL:
3824 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3825 struct pat_ref *ref;
3826 char *key;
3827 int len;
3828
3829 /* collect reference */
3830 ref = pat_ref_lookup(rule->arg.map.ref);
3831 if (!ref)
3832 continue;
3833
3834 /* collect key */
3835 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3836 key = trash.str;
3837 key[len] = '\0';
3838
3839 /* perform update */
3840 /* returned code: 1=ok, 0=ko */
3841 pat_ref_delete(ref, key);
3842
3843 break;
3844 }
3845
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3846 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3847 struct pat_ref *ref;
3848 char *key;
3849 struct chunk *trash_key;
3850 int len;
3851
3852 trash_key = get_trash_chunk();
3853
3854 /* collect reference */
3855 ref = pat_ref_lookup(rule->arg.map.ref);
3856 if (!ref)
3857 continue;
3858
3859 /* collect key */
3860 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3861 key = trash_key->str;
3862 key[len] = '\0';
3863
3864 /* perform update */
3865 /* check if the entry already exists */
3866 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3867 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3868
3869 break;
3870 }
3871
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3872 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3873 struct pat_ref *ref;
3874 char *key, *value;
3875 struct chunk *trash_key, *trash_value;
3876 int len;
3877
3878 trash_key = get_trash_chunk();
3879 trash_value = get_trash_chunk();
3880
3881 /* collect reference */
3882 ref = pat_ref_lookup(rule->arg.map.ref);
3883 if (!ref)
3884 continue;
3885
3886 /* collect key */
3887 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3888 key = trash_key->str;
3889 key[len] = '\0';
3890
3891 /* collect value */
3892 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3893 value = trash_value->str;
3894 value[len] = '\0';
3895
3896 /* perform update */
3897 if (pat_ref_find_elt(ref, key) != NULL)
3898 /* update entry if it exists */
3899 pat_ref_set(ref, key, value, NULL);
3900 else
3901 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3902 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3903
3904 break;
3905 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3906
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3907 case ACT_HTTP_REDIR:
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3908 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3909 return HTTP_RULE_RES_BADREQ;
3910 return HTTP_RULE_RES_DONE;
3911
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3912 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
3913 /* Note: only the first valid tracking parameter of each
3914 * applies.
3915 */
3916
3917 if (stkctr_entry(&s->stkctr[http_trk_idx(rule->action)]) == NULL) {
3918 struct stktable *t;
3919 struct stksess *ts;
3920 struct stktable_key *key;
3921 void *ptr;
3922
3923 t = rule->arg.trk_ctr.table.t;
3924 key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_RES | SMP_OPT_FINAL, rule->arg.trk_ctr.expr, NULL);
3925
3926 if (key && (ts = stktable_get_entry(t, key))) {
3927 stream_track_stkctr(&s->stkctr[http_trk_idx(rule->action)], t, ts);
3928
3929 /* let's count a new HTTP request as it's the first time we do it */
3930 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3931 if (ptr)
3932 stktable_data_cast(ptr, http_req_cnt)++;
3933
3934 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3935 if (ptr)
3936 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3937 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3938
3939 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
3940 if (sess->fe != s->be)
3941 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3942
3943 /* When the client triggers a 4xx from the server, it's most often due
3944 * to a missing object or permission. These events should be tracked
3945 * because if they happen often, it may indicate a brute force or a
3946 * vulnerability scan. Normally this is done when receiving the response
3947 * but here we're tracking after this ought to have been done so we have
3948 * to do it on purpose.
3949 */
Willy Tarreau3146a4c2016-07-26 15:22:33 +0200[diff] [blame]3950 if ((unsigned)(txn->status - 400) < 100) {
3951 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_CNT);
3952 if (ptr)
3953 stktable_data_cast(ptr, http_err_cnt)++;
3954
3955 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_RATE);
3956 if (ptr)
3957 update_freq_ctr_period(&stktable_data_cast(ptr, http_err_rate),
3958 t->data_arg[STKTABLE_DT_HTTP_ERR_RATE].u, 1);
3959 }
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3960 }
3961 }
3962 break;
3963
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3964 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3965 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3966 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3967
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3968 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3969 case ACT_RET_ERR:
3970 case ACT_RET_CONT:
3971 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3972 case ACT_RET_STOP:
3973 return HTTP_RULE_RES_STOP;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3974 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3975 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3976 return HTTP_RULE_RES_YIELD;
3977 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3978 break;
3979
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3980 /* other flags exists, but normaly, they never be matched. */
3981 default:
3982 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3983 }
3984 }
3985
3986 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3987 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3988}
3989
3990
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3991/* Perform an HTTP redirect based on the information in <rule>. The function
3992 * returns non-zero on success, or zero in case of a, irrecoverable error such
3993 * as too large a request to build a valid response.
3994 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3995static int http_apply_redirect_rule(struct redirect_rule *rule, struct stream *s, struct http_txn *txn)
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3996{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3997 struct http_msg *req = &txn->req;
3998 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3999 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4000 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4001
4002 /* build redirect message */
4003 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]4004 case 308:
4005 msg_fmt = HTTP_308;
4006 break;
4007 case 307:
4008 msg_fmt = HTTP_307;
4009 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4010 case 303:
4011 msg_fmt = HTTP_303;
4012 break;
4013 case 301:
4014 msg_fmt = HTTP_301;
4015 break;
4016 case 302:
4017 default:
4018 msg_fmt = HTTP_302;
4019 break;
4020 }
4021
4022 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
4023 return 0;
4024
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4025 location = trash.str + trash.len;
4026
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4027 switch(rule->type) {
4028 case REDIRECT_TYPE_SCHEME: {
4029 const char *path;
4030 const char *host;
4031 struct hdr_ctx ctx;
4032 int pathlen;
4033 int hostlen;
4034
4035 host = "";
4036 hostlen = 0;
4037 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4038 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4039 host = ctx.line + ctx.val;
4040 hostlen = ctx.vlen;
4041 }
4042
4043 path = http_get_path(txn);
4044 /* build message using path */
4045 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4046 pathlen = req->sl.rq.u_l + (req->chn->buf->p + req->sl.rq.u) - path;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4047 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4048 int qs = 0;
4049 while (qs < pathlen) {
4050 if (path[qs] == '?') {
4051 pathlen = qs;
4052 break;
4053 }
4054 qs++;
4055 }
4056 }
4057 } else {
4058 path = "/";
4059 pathlen = 1;
4060 }
4061
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4062 if (rule->rdr_str) { /* this is an old "redirect" rule */
4063 /* check if we can add scheme + "://" + host + path */
4064 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
4065 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4066
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4067 /* add scheme */
4068 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4069 trash.len += rule->rdr_len;
4070 }
4071 else {
4072 /* add scheme with executing log format */
4073 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4074
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4075 /* check if we can add scheme + "://" + host + path */
4076 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
4077 return 0;
4078 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4079 /* add "://" */
4080 memcpy(trash.str + trash.len, "://", 3);
4081 trash.len += 3;
4082
4083 /* add host */
4084 memcpy(trash.str + trash.len, host, hostlen);
4085 trash.len += hostlen;
4086
4087 /* add path */
4088 memcpy(trash.str + trash.len, path, pathlen);
4089 trash.len += pathlen;
4090
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4091 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4092 if (trash.len && trash.str[trash.len - 1] != '/' &&
4093 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4094 if (trash.len > trash.size - 5)
4095 return 0;
4096 trash.str[trash.len] = '/';
4097 trash.len++;
4098 }
4099
4100 break;
4101 }
4102 case REDIRECT_TYPE_PREFIX: {
4103 const char *path;
4104 int pathlen;
4105
4106 path = http_get_path(txn);
4107 /* build message using path */
4108 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4109 pathlen = req->sl.rq.u_l + (req->chn->buf->p + req->sl.rq.u) - path;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4110 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4111 int qs = 0;
4112 while (qs < pathlen) {
4113 if (path[qs] == '?') {
4114 pathlen = qs;
4115 break;
4116 }
4117 qs++;
4118 }
4119 }
4120 } else {
4121 path = "/";
4122 pathlen = 1;
4123 }
4124
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4125 if (rule->rdr_str) { /* this is an old "redirect" rule */
4126 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
4127 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4128
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4129 /* add prefix. Note that if prefix == "/", we don't want to
4130 * add anything, otherwise it makes it hard for the user to
4131 * configure a self-redirection.
4132 */
4133 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
4134 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4135 trash.len += rule->rdr_len;
4136 }
4137 }
4138 else {
4139 /* add prefix with executing log format */
4140 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
4141
4142 /* Check length */
4143 if (trash.len + pathlen > trash.size - 4)
4144 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4145 }
4146
4147 /* add path */
4148 memcpy(trash.str + trash.len, path, pathlen);
4149 trash.len += pathlen;
4150
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4151 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4152 if (trash.len && trash.str[trash.len - 1] != '/' &&
4153 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4154 if (trash.len > trash.size - 5)
4155 return 0;
4156 trash.str[trash.len] = '/';
4157 trash.len++;
4158 }
4159
4160 break;
4161 }
4162 case REDIRECT_TYPE_LOCATION:
4163 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4164 if (rule->rdr_str) { /* this is an old "redirect" rule */
4165 if (trash.len + rule->rdr_len > trash.size - 4)
4166 return 0;
4167
4168 /* add location */
4169 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4170 trash.len += rule->rdr_len;
4171 }
4172 else {
4173 /* add location with executing log format */
4174 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4175
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4176 /* Check left length */
4177 if (trash.len > trash.size - 4)
4178 return 0;
4179 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4180 break;
4181 }
4182
4183 if (rule->cookie_len) {
4184 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
4185 trash.len += 14;
4186 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
4187 trash.len += rule->cookie_len;
4188 memcpy(trash.str + trash.len, "\r\n", 2);
4189 trash.len += 2;
4190 }
4191
4192 /* add end of headers and the keep-alive/close status.
4193 * We may choose to set keep-alive if the Location begins
4194 * with a slash, because the client will come back to the
4195 * same server.
4196 */
4197 txn->status = rule->code;
4198 /* let's log the request time */
4199 s->logs.tv_request = now;
4200
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4201 if (*location == '/' &&
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4202 (req->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau2de8a502015-05-28 17:23:54 +0200[diff] [blame]4203 ((!(req->flags & HTTP_MSGF_TE_CHNK) && !req->body_len) || (req->msg_state == HTTP_MSG_DONE)) &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4204 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4205 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4206 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4207 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4208 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4209 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
4210 trash.len += 30;
4211 } else {
4212 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
4213 trash.len += 24;
4214 }
4215 }
4216 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
4217 trash.len += 4;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]4218 FLT_STRM_CB(s, flt_http_reply(s, txn->status, &trash));
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4219 bo_inject(res->chn, trash.str, trash.len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4220 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4221 bi_fast_delete(req->chn->buf, req->sov);
4222 req->next -= req->sov;
4223 req->sov = 0;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4224 s->req.analysers = AN_REQ_HTTP_XFER_BODY | (s->req.analysers & AN_FLT_END);
4225 s->res.analysers = AN_RES_HTTP_XFER_BODY | (s->req.analysers & AN_FLT_END);
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4226 req->msg_state = HTTP_MSG_CLOSED;
4227 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]4228 /* Trim any possible response */
4229 res->chn->buf->i = 0;
4230 res->next = res->sov = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4231 } else {
4232 /* keep-alive not possible */
4233 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4234 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4235 trash.len += 29;
4236 } else {
4237 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
4238 trash.len += 23;
4239 }
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4240 http_reply_and_close(s, txn->status, &trash);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4241 req->chn->analysers &= AN_FLT_END;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4242 }
4243
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4244 if (!(s->flags & SF_ERR_MASK))
4245 s->flags |= SF_ERR_LOCAL;
4246 if (!(s->flags & SF_FINST_MASK))
4247 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4248
4249 return 1;
4250}
4251
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4252/* This stream analyser runs all HTTP request processing which is common to
4253 * frontends and backends, which means blocking ACLs, filters, connection-close,
4254 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4255 * It returns 1 if the processing can continue on next analysers, or zero if it
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4256 * either needs more data or wants to immediately abort the request (eg: deny,
4257 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4258 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4259int http_process_req_common(struct stream *s, struct channel *req, int an_bit, struct proxy *px)
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4260{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4261 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4262 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4263 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4264 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4265 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4266 enum rule_result verdict;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4267 int deny_status = HTTP_ERR_403;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4268
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4269 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4270 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4271 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4272 }
4273
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4274 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4275 now_ms, __FUNCTION__,
4276 s,
4277 req,
4278 req->rex, req->wex,
4279 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4280 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4281 req->analysers);
4282
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4283 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4284 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4285
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4286 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4287 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4288 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, &deny_status);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4289
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4290 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4291 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4292 goto return_prx_yield;
4293
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4294 case HTTP_RULE_RES_CONT:
4295 case HTTP_RULE_RES_STOP: /* nothing to do */
4296 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4297
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4298 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4299 if (txn->flags & TX_CLTARPIT)
4300 goto tarpit;
4301 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4302
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4303 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4304 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4305
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4306 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4307 goto done;
4308
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4309 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4310 goto return_bad_req;
4311 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4312 }
4313
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4314 /* OK at this stage, we know that the request was accepted according to
4315 * the http-request rules, we can check for the stats. Note that the
4316 * URI is detected *before* the req* rules in order not to be affected
4317 * by a possible reqrep, while they are processed *after* so that a
4318 * reqdeny can still block them. This clearly needs to change in 1.6!
4319 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4320 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4321 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4322 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4323 txn->status = 500;
4324 s->logs.tv_request = now;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4325 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4326
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4327 if (!(s->flags & SF_ERR_MASK))
4328 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4329 goto return_prx_cond;
4330 }
4331
4332 /* parse the whole stats request and extract the relevant information */
4333 http_handle_stats(s, req);
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4334 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, &deny_status);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4335 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4336
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4337 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4338 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4339
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4340 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4341 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4342 }
4343
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4344 /* evaluate the req* rules except reqadd */
4345 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4346 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4347 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4348
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4349 if (txn->flags & TX_CLDENY)
4350 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4351
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4352 if (txn->flags & TX_CLTARPIT)
4353 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4354 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4355
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4356 /* add request headers from the rule sets in the same order */
4357 list_for_each_entry(wl, &px->req_add, list) {
4358 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4359 int ret = acl_exec_cond(wl->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4360 ret = acl_pass(ret);
4361 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4362 ret = !ret;
4363 if (!ret)
4364 continue;
4365 }
4366
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4367 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4368 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4369 }
4370
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4371
4372 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4373 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4374 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4375 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4376 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4377
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4378 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4379 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4380 if (!(s->flags & SF_FINST_MASK))
4381 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4382
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4383 /* enable the minimally required analyzers to handle keep-alive and compression on the HTTP response */
Christopher Faulet309c6412015-12-02 09:57:32 +0100[diff] [blame]4384 req->analysers &= (AN_REQ_HTTP_BODY | AN_FLT_HTTP_HDRS | AN_FLT_END);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4385 req->analysers &= ~AN_FLT_XFER_DATA;
4386 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4387 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4388 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4389
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4390 /* check whether we have some ACLs set to redirect this request */
4391 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4392 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4393 int ret;
4394
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4395 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4396 ret = acl_pass(ret);
4397 if (rule->cond->pol == ACL_COND_UNLESS)
4398 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4399 if (!ret)
4400 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4401 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4402 if (!http_apply_redirect_rule(rule, s, txn))
4403 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4404 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4405 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4406
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4407 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4408 * If this happens, then the data will not come immediately, so we must
4409 * send all what we have without waiting. Note that due to the small gain
4410 * in waiting for the body of the request, it's easier to simply put the
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4411 * CF_SEND_DONTWAIT flag any time. It's a one-shot flag so it will remove
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4412 * itself once used.
4413 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4414 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4415
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4416 done: /* done with this analyser, continue with next ones that the calling
4417 * points will have set, if any.
4418 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4419 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4420 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4421 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4422 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4423
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4424 tarpit:
4425 /* When a connection is tarpitted, we use the tarpit timeout,
4426 * which may be the same as the connect timeout if unspecified.
4427 * If unset, then set it to zero because we really want it to
4428 * eventually expire. We build the tarpit as an analyser.
4429 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4430 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4431
4432 /* wipe the request out so that we can drop the connection early
4433 * if the client closes first.
4434 */
4435 channel_dont_connect(req);
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4436
4437 /* Allow cookie logging
4438 */
4439 if (s->be->cookie_name || sess->fe->capture_name)
4440 manage_client_side_cookies(s, req);
4441
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4442 req->analysers &= AN_FLT_END; /* remove switching rules etc... */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4443 req->analysers |= AN_REQ_HTTP_TARPIT;
4444 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4445 if (!req->analyse_exp)
4446 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4447 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4448 sess->fe->fe_counters.denied_req++;
4449 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4450 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4451 if (sess->listener->counters)
4452 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4453 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4454
4455 deny: /* this request was blocked (denied) */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4456
4457 /* Allow cookie logging
4458 */
4459 if (s->be->cookie_name || sess->fe->capture_name)
4460 manage_client_side_cookies(s, req);
4461
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4462 txn->flags |= TX_CLDENY;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4463 txn->status = http_err_codes[deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4464 s->logs.tv_request = now;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4465 http_reply_and_close(s, txn->status, http_error_message(s, deny_status));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4466 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4467 sess->fe->fe_counters.denied_req++;
4468 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4469 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4470 if (sess->listener->counters)
4471 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4472 goto return_prx_cond;
4473
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4474 return_bad_req:
4475 /* We centralize bad requests processing here */
4476 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4477 /* we detected a parsing error. We want to archive this request
4478 * in the dedicated proxy area for later troubleshooting.
4479 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4480 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4481 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4482
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4483 txn->req.msg_state = HTTP_MSG_ERROR;
4484 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4485 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4486
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4487 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4488 if (sess->listener->counters)
4489 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4490
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4491 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4492 if (!(s->flags & SF_ERR_MASK))
4493 s->flags |= SF_ERR_PRXCOND;
4494 if (!(s->flags & SF_FINST_MASK))
4495 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4496
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4497 req->analysers &= AN_FLT_END;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4498 req->analyse_exp = TICK_ETERNITY;
4499 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4500
4501 return_prx_yield:
4502 channel_dont_connect(req);
4503 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4504}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4505
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4506/* This function performs all the processing enabled for the current request.
4507 * It returns 1 if the processing can continue on next analysers, or zero if it
4508 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4509 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4510 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4511int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4512{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4513 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4514 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4515 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4516 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4517
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4518 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4519 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4520 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4521 return 0;
4522 }
4523
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4524 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4525 now_ms, __FUNCTION__,
4526 s,
4527 req,
4528 req->rex, req->wex,
4529 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4530 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4531 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4532
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4533 /*
4534 * Right now, we know that we have processed the entire headers
4535 * and that unwanted requests have been filtered out. We can do
4536 * whatever we want with the remaining request. Also, now we
4537 * may have separate values for ->fe, ->be.
4538 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4539
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4540 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4541 * If HTTP PROXY is set we simply get remote server address parsing
4542 * incoming request. Note that this requires that a connection is
4543 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4544 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4545 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4546 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4547 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4548
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4549 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau973a5422015-08-05 21:47:23 +0200[diff] [blame]4550 if (unlikely((conn = si_alloc_conn(&s->si[1])) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4551 txn->req.msg_state = HTTP_MSG_ERROR;
4552 txn->status = 500;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4553 req->analysers &= AN_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4554 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4555
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4556 if (!(s->flags & SF_ERR_MASK))
4557 s->flags |= SF_ERR_RESOURCE;
4558 if (!(s->flags & SF_FINST_MASK))
4559 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4560
4561 return 0;
4562 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4563
4564 path = http_get_path(txn);
4565 url2sa(req->buf->p + msg->sl.rq.u,
4566 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4567 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4568 /* if the path was found, we have to remove everything between
4569 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4570 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4571 * u_l characters by a single "/".
4572 */
4573 if (path) {
4574 char *cur_ptr = req->buf->p;
4575 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4576 int delta;
4577
4578 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4579 http_msg_move_end(&txn->req, delta);
4580 cur_end += delta;
4581 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4582 goto return_bad_req;
4583 }
4584 else {
4585 char *cur_ptr = req->buf->p;
4586 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4587 int delta;
4588
4589 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4590 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4591 http_msg_move_end(&txn->req, delta);
4592 cur_end += delta;
4593 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4594 goto return_bad_req;
4595 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4596 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4597
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4598 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4599 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4600 * Note that doing so might move headers in the request, but
4601 * the fields will stay coherent and the URI will not move.
4602 * This should only be performed in the backend.
4603 */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4604 if (s->be->cookie_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4605 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4606
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4607 /* add unique-id if "header-unique-id" is specified */
4608
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]4609 if (!LIST_ISEMPTY(&sess->fe->format_unique_id) && !s->unique_id) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4610 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4611 goto return_bad_req;
4612 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4613 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4614 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4615
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4616 if (sess->fe->header_unique_id && s->unique_id) {
4617 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4618 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4619 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4620 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len) < 0))
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4621 goto return_bad_req;
4622 }
4623
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4624 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4625 * 9: add X-Forwarded-For if either the frontend or the backend
4626 * asks for it.
4627 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4628 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4629 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4630 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4631 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4632 s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_len : sess->fe->fwdfor_hdr_len,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4633 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4634 /* The header is set to be added only if none is present
4635 * and we found it, so don't do anything.
4636 */
4637 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4638 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4639 /* Add an X-Forwarded-For header unless the source IP is
4640 * in the 'except' network range.
4641 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4642 if ((!sess->fe->except_mask.s_addr ||
4643 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4644 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4645 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4646 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & s->be->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4647 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4648 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4649 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4650 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4651
4652 /* Note: we rely on the backend to get the header name to be used for
4653 * x-forwarded-for, because the header is really meant for the backends.
4654 * However, if the backend did not specify any option, we have to rely
4655 * on the frontend's header name.
4656 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4657 if (s->be->fwdfor_hdr_len) {
4658 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4659 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4660 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4661 len = sess->fe->fwdfor_hdr_len;
4662 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4663 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4664 len += snprintf(trash.str + len, trash.size - len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]4665
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4666 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4667 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4668 }
4669 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4670 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4671 /* FIXME: for the sake of completeness, we should also support
4672 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4673 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4674 int len;
4675 char pn[INET6_ADDRSTRLEN];
4676 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4677 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4678 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4679
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4680 /* Note: we rely on the backend to get the header name to be used for
4681 * x-forwarded-for, because the header is really meant for the backends.
4682 * However, if the backend did not specify any option, we have to rely
4683 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4684 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4685 if (s->be->fwdfor_hdr_len) {
4686 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4687 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4688 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4689 len = sess->fe->fwdfor_hdr_len;
4690 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4691 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4692 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4693
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4694 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4695 goto return_bad_req;
4696 }
4697 }
4698
4699 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4700 * 10: add X-Original-To if either the frontend or the backend
4701 * asks for it.
4702 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4703 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4704
4705 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4706 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4707 /* Add an X-Original-To header unless the destination IP is
4708 * in the 'except' network range.
4709 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4710 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4711
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4712 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4713 ((!sess->fe->except_mask_to.s_addr ||
4714 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4715 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4716 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4717 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4718 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4719 int len;
4720 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4721 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4722
4723 /* Note: we rely on the backend to get the header name to be used for
4724 * x-original-to, because the header is really meant for the backends.
4725 * However, if the backend did not specify any option, we have to rely
4726 * on the frontend's header name.
4727 */
4728 if (s->be->orgto_hdr_len) {
4729 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4730 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4731 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4732 len = sess->fe->orgto_hdr_len;
4733 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4734 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4735 len += snprintf(trash.str + len, trash.size - len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4736
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4737 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4738 goto return_bad_req;
4739 }
4740 }
4741 }
4742
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4743 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4744 * If an "Upgrade" token is found, the header is left untouched in order not to have
4745 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4746 * "Upgrade" is present in the Connection header.
4747 */
4748 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4749 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4750 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4751 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4752 unsigned int want_flags = 0;
4753
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4754 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4755 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4756 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4757 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4758 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4759 want_flags |= TX_CON_CLO_SET;
4760 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4761 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4762 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4763 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4764 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4765 want_flags |= TX_CON_KAL_SET;
4766 }
4767
4768 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4769 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4770 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4771
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4772
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4773 /* If we have no server assigned yet and we're balancing on url_param
4774 * with a POST request, we may be interested in checking the body for
4775 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4776 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4777 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4778 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4779 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4780 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4781 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4782 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4783
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4784 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4785 req->analysers &= ~AN_FLT_XFER_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4786 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4787#ifdef TCP_QUICKACK
4788 /* We expect some data from the client. Unless we know for sure
4789 * we already have a full request, we have to re-enable quick-ack
4790 * in case we previously disabled it, otherwise we might cause
4791 * the client to delay further data.
4792 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4793 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4794 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4795 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4796 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4797 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4798#endif
4799 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4800
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4801 /*************************************************************
4802 * OK, that's finished for the headers. We have done what we *
4803 * could. Let's switch to the DATA state. *
4804 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4805 req->analyse_exp = TICK_ETERNITY;
4806 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4807
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4808 /* if the server closes the connection, we want to immediately react
4809 * and close the socket to save packets and syscalls.
4810 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4811 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4812 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4813
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4814 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4815 /* OK let's go on with the BODY now */
4816 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4817
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4818 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4819 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4820 /* we detected a parsing error. We want to archive this request
4821 * in the dedicated proxy area for later troubleshooting.
4822 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4823 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4824 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4825
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4826 txn->req.msg_state = HTTP_MSG_ERROR;
4827 txn->status = 400;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4828 req->analysers &= AN_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4829 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4830
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4831 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4832 if (sess->listener->counters)
4833 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4834
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4835 if (!(s->flags & SF_ERR_MASK))
4836 s->flags |= SF_ERR_PRXCOND;
4837 if (!(s->flags & SF_FINST_MASK))
4838 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4839 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4840}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4841
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4842/* This function is an analyser which processes the HTTP tarpit. It always
4843 * returns zero, at the beginning because it prevents any other processing
4844 * from occurring, and at the end because it terminates the request.
4845 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4846int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4847{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4848 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4849
4850 /* This connection is being tarpitted. The CLIENT side has
4851 * already set the connect expiration date to the right
4852 * timeout. We just have to check that the client is still
4853 * there and that the timeout has not expired.
4854 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4855 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4856 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4857 !tick_is_expired(req->analyse_exp, now_ms))
4858 return 0;
4859
4860 /* We will set the queue timer to the time spent, just for
4861 * logging purposes. We fake a 500 server error, so that the
4862 * attacker will not suspect his connection has been tarpitted.
4863 * It will not cause trouble to the logs because we can exclude
4864 * the tarpitted connections by filtering on the 'PT' status flags.
4865 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4866 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4867
4868 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4869 if (!(req->flags & CF_READ_ERROR))
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4870 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4871
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4872 req->analysers &= AN_FLT_END;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4873 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4874
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4875 if (!(s->flags & SF_ERR_MASK))
4876 s->flags |= SF_ERR_PRXCOND;
4877 if (!(s->flags & SF_FINST_MASK))
4878 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4879 return 0;
4880}
4881
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4882/* This function is an analyser which waits for the HTTP request body. It waits
4883 * for either the buffer to be full, or the full advertised contents to have
4884 * reached the buffer. It must only be called after the standard HTTP request
4885 * processing has occurred, because it expects the request to be parsed and will
4886 * look for the Expect header. It may send a 100-Continue interim response. It
4887 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4888 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4889 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4890 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4891int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4892{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4893 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4894 struct http_txn *txn = s->txn;
4895 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4896
4897 /* We have to parse the HTTP request body to find any required data.
4898 * "balance url_param check_post" should have been the only way to get
4899 * into this. We were brought here after HTTP header analysis, so all
4900 * related structures are ready.
4901 */
4902
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4903 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4904 /* This is the first call */
4905 if (msg->msg_state < HTTP_MSG_BODY)
4906 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4907
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4908 if (msg->msg_state < HTTP_MSG_100_SENT) {
4909 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4910 * send an HTTP/1.1 100 Continue intermediate response.
4911 */
4912 if (msg->flags & HTTP_MSGF_VER_11) {
4913 struct hdr_ctx ctx;
4914 ctx.idx = 0;
4915 /* Expect is allowed in 1.1, look for it */
4916 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4917 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4918 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4919 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4920 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4921 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4922 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4923
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4924 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4925 * req->buf->p still points to the beginning of the message. We
4926 * must save the body in msg->next because it survives buffer
4927 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4928 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4929 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4930
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4931 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4932 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4933 else
4934 msg->msg_state = HTTP_MSG_DATA;
4935 }
4936
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4937 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4938 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4939 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4940 goto missing_data;
4941
4942 /* OK we have everything we need now */
4943 goto http_end;
4944 }
4945
4946 /* OK here we're parsing a chunked-encoded message */
4947
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4948 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4949 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4950 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4951 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4952 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4953 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4954
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4955 if (!ret)
4956 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4957 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4958 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4959 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4960 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]4961 msg->next += ret;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4962 msg->msg_state = msg->chunk_len ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4963 }
4964
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4965 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4966 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4967 * for at least a whole chunk or the whole content length bytes after
4968 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4969 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4970 if (msg->msg_state == HTTP_MSG_TRAILERS)
4971 goto http_end;
4972
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4973 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4974 goto http_end;
4975
4976 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4977 /* we get here if we need to wait for more data. If the buffer is full,
4978 * we have the maximum we can expect.
4979 */
4980 if (buffer_full(req->buf, global.tune.maxrewrite))
4981 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4982
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4983 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4984 txn->status = 408;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4985 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4986
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4987 if (!(s->flags & SF_ERR_MASK))
4988 s->flags |= SF_ERR_CLITO;
4989 if (!(s->flags & SF_FINST_MASK))
4990 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4991 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4992 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4993
4994 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4995 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4996 /* Not enough data. We'll re-use the http-request
4997 * timeout here. Ideally, we should set the timeout
4998 * relative to the accept() date. We just set the
4999 * request timeout once at the beginning of the
5000 * request.
5001 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5002 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5003 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]5004 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5005 return 0;
5006 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5007
5008 http_end:
5009 /* The situation will not evolve, so let's give up on the analysis. */
5010 s->logs.tv_request = now; /* update the request timer to reflect full request */
5011 req->analysers &= ~an_bit;
5012 req->analyse_exp = TICK_ETERNITY;
5013 return 1;
5014
5015 return_bad_req: /* let's centralize all bad requests */
5016 txn->req.msg_state = HTTP_MSG_ERROR;
5017 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5018 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5019
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5020 if (!(s->flags & SF_ERR_MASK))
5021 s->flags |= SF_ERR_PRXCOND;
5022 if (!(s->flags & SF_FINST_MASK))
5023 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5024
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5025 return_err_msg:
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5026 req->analysers &= AN_FLT_END;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5027 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5028 if (sess->listener->counters)
5029 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5030 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5031}
5032
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5033/* send a server's name with an outgoing request over an established connection.
5034 * Note: this function is designed to be called once the request has been scheduled
5035 * for being forwarded. This is the reason why it rewinds the buffer before
5036 * proceeding.
5037 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]5038int http_send_name_header(struct http_txn *txn, struct proxy* be, const char* srv_name) {
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5039
5040 struct hdr_ctx ctx;
5041
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5042 char *hdr_name = be->server_id_hdr_name;
5043 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]5044 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5045 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5046 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5047
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]5048 ctx.idx = 0;
5049
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]5050 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5051 if (old_o) {
5052 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5053 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5054 txn->req.next += old_o;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5055 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5056 }
5057
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5058 old_i = chn->buf->i;
5059 while (http_find_header2(hdr_name, hdr_name_len, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5060 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5061 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5062 }
5063
5064 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5065 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5066 memcpy(hdr_val, hdr_name, hdr_name_len);
5067 hdr_val += hdr_name_len;
5068 *hdr_val++ = ':';
5069 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5070 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
5071 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, hdr_val - trash.str);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5072
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5073 if (old_o) {
5074 /* If this was a forwarded request, we must readjust the amount of
5075 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5076 * variations. Note that the current state is >= HTTP_MSG_BODY,
5077 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5078 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5079 old_o += chn->buf->i - old_i;
5080 b_adv(chn->buf, old_o);
5081 txn->req.next -= old_o;
5082 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5083 }
5084
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5085 return 0;
5086}
5087
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5088/* Terminate current transaction and prepare a new one. This is very tricky
5089 * right now but it works.
5090 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5091void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5092{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5093 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5094 struct proxy *fe = strm_fe(s);
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5095 struct proxy *be = s->be;
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5096 struct connection *srv_conn;
5097 struct server *srv;
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5098 unsigned int prev_flags = s->txn->flags;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5099
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5100 /* FIXME: We need a more portable way of releasing a backend's and a
5101 * server's connections. We need a safer way to reinitialize buffer
5102 * flags. We also need a more accurate method for computing per-request
5103 * data.
5104 */
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5105 srv_conn = objt_conn(s->si[1].end);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5106
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5107 /* unless we're doing keep-alive, we want to quickly close the connection
5108 * to the server.
5109 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5110 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5111 !si_conn_ready(&s->si[1])) {
5112 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
5113 si_shutr(&s->si[1]);
5114 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5115 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5116
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5117 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5118 be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]5119 if (unlikely(s->srv_conn))
5120 sess_change_server(s, NULL);
5121 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5122
5123 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5124 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5125
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5126 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5127 int n;
5128
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5129 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5130 if (n < 1 || n > 5)
5131 n = 0;
5132
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5133 if (fe->mode == PR_MODE_HTTP) {
5134 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5135 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5136 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5137 (be->mode == PR_MODE_HTTP)) {
5138 be->be_counters.p.http.rsp[n]++;
5139 be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5140 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5141 }
5142
5143 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5144 s->logs.bytes_in -= s->req.buf->i;
5145 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5146
5147 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5148 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5149 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5150 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5151 s->do_log(s);
5152 }
5153
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]5154 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5155 stream_stop_content_counters(s);
5156 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]5157
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5158 s->logs.accept_date = date; /* user-visible date for logging */
5159 s->logs.tv_accept = now; /* corrected date for internal use */
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200[diff] [blame]5160 s->logs.t_handshake = 0; /* There are no handshake in keep alive connection. */
5161 s->logs.t_idle = -1;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5162 tv_zero(&s->logs.tv_request);
5163 s->logs.t_queue = -1;
5164 s->logs.t_connect = -1;
5165 s->logs.t_data = -1;
5166 s->logs.t_close = 0;
5167 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
5168 s->logs.srv_queue_size = 0; /* we will get this number soon */
5169
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5170 s->logs.bytes_in = s->req.total = s->req.buf->i;
5171 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5172
5173 if (s->pend_pos)
5174 pendconn_free(s->pend_pos);
5175
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5176 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5177 if (s->flags & SF_CURR_SESS) {
5178 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5179 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5180 }
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5181 if (may_dequeue_tasks(objt_server(s->target), be))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5182 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5183 }
5184
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5185 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5186
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5187 /* only release our endpoint if we don't intend to reuse the
5188 * connection.
5189 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5190 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5191 !si_conn_ready(&s->si[1])) {
5192 si_release_endpoint(&s->si[1]);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5193 srv_conn = NULL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5194 }
5195
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5196 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5197 s->si[1].err_type = SI_ET_NONE;
5198 s->si[1].conn_retries = 0; /* used for logging too */
5199 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5200 s->si[1].flags &= SI_FL_ISBACK | SI_FL_DONT_WAKE; /* we're in the context of process_stream */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5201 s->req.flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT|CF_WAKE_CONNECT|CF_WROTE_DATA);
5202 s->res.flags &= ~(CF_SHUTR|CF_SHUTR_NOW|CF_READ_ATTACHED|CF_READ_ERROR|CF_READ_NOEXP|CF_STREAMER|CF_STREAMER_FAST|CF_WRITE_PARTIAL|CF_NEVER_WAIT|CF_WROTE_DATA);
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5203 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5204 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5205 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5206
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5207 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5208 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5209 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5210
5211 if (prev_status == 401 || prev_status == 407) {
5212 /* In HTTP keep-alive mode, if we receive a 401, we still have
5213 * a chance of being able to send the visitor again to the same
5214 * server over the same connection. This is required by some
5215 * broken protocols such as NTLM, and anyway whenever there is
5216 * an opportunity for sending the challenge to the proper place,
5217 * it's better to do it (at least it helps with debugging).
5218 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5219 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreaubd99d582015-09-02 10:40:43 +0200[diff] [blame]5220 if (srv_conn)
5221 srv_conn->flags |= CO_FL_PRIVATE;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5222 }
5223
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5224 /* Never ever allow to reuse a connection from a non-reuse backend */
5225 if (srv_conn && (be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
5226 srv_conn->flags |= CO_FL_PRIVATE;
5227
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5228 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5229 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5230
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5231 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5232 s->req.flags |= CF_NEVER_WAIT;
5233 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5234 }
5235
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5236 /* if the request buffer is not empty, it means we're
5237 * about to process another request, so send pending
5238 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5239 * Just don't do this if the buffer is close to be full,
5240 * because the request will wait for it to flush a little
5241 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5242 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5243 if (s->req.buf->i) {
5244 if (s->res.buf->o &&
5245 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5246 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5247 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5248 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5249
Willy Tarreau714ea782015-11-25 20:11:11 +0100[diff] [blame]5250 /* we're removing the analysers, we MUST re-enable events detection.
5251 * We don't enable close on the response channel since it's either
5252 * already closed, or in keep-alive with an idle connection handler.
5253 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5254 channel_auto_read(&s->req);
5255 channel_auto_close(&s->req);
5256 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5257
Willy Tarreau1c59bd52015-11-02 20:20:11 +0100[diff] [blame]5258 /* we're in keep-alive with an idle connection, monitor it if not already done */
5259 if (srv_conn && LIST_ISEMPTY(&srv_conn->list)) {
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5260 srv = objt_server(srv_conn->target);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5261 if (!srv)
5262 si_idle_conn(&s->si[1], NULL);
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5263 else if (srv_conn->flags & CO_FL_PRIVATE)
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5264 si_idle_conn(&s->si[1], &srv->priv_conns);
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5265 else if (prev_flags & TX_NOT_FIRST)
5266 /* note: we check the request, not the connection, but
5267 * this is valid for strategies SAFE and AGGR, and in
5268 * case of ALWS, we don't care anyway.
5269 */
5270 si_idle_conn(&s->si[1], &srv->safe_conns);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5271 else
5272 si_idle_conn(&s->si[1], &srv->idle_conns);
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5273 }
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5274
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5275 if (HAS_FILTERS(s)) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5276 s->req.analysers &= AN_FLT_END;
5277 s->res.analysers &= AN_FLT_END;
5278 }
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5279 else {
5280 s->req.analysers = strm_li(s) ? strm_li(s)->analysers : 0;
5281 s->res.analysers = 0;
5282 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5283}
5284
5285
5286/* This function updates the request state machine according to the response
5287 * state machine and buffer flags. It returns 1 if it changes anything (flag
5288 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5289 * it is only used to find when a request/response couple is complete. Both
5290 * this function and its equivalent should loop until both return zero. It
5291 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5292 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5293int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5294{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5295 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5296 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5297 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5298 unsigned int old_state = txn->req.msg_state;
5299
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5300 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5301 return 0;
5302
5303 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5304 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5305 * We can shut the read side unless we want to abort_on_close,
5306 * or we have a POST request. The issue with POST requests is
5307 * that some browsers still send a CRLF after the request, and
5308 * this CRLF must be read so that it does not remain in the kernel
5309 * buffers, otherwise a close could cause an RST on some systems
5310 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5311 * Note that if we're using keep-alive on the client side, we'd
5312 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5313 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5314 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5315 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5316 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5317 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5318 !(s->be->options & PR_O_ABRT_CLOSE) &&
5319 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5320 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5321
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5322 /* if the server closes the connection, we want to immediately react
5323 * and close the socket to save packets and syscalls.
5324 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5325 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5326
Willy Tarreau7f876a12015-11-18 11:59:55 +0100[diff] [blame]5327 /* In any case we've finished parsing the request so we must
5328 * disable Nagle when sending data because 1) we're not going
5329 * to shut this side, and 2) the server is waiting for us to
5330 * send pending data.
5331 */
5332 chn->flags |= CF_NEVER_WAIT;
5333
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5334 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5335 goto wait_other_side;
5336
5337 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5338 /* The server has not finished to respond, so we
5339 * don't want to move in order not to upset it.
5340 */
5341 goto wait_other_side;
5342 }
5343
5344 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5345 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5346 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5347 txn->req.msg_state = HTTP_MSG_TUNNEL;
5348 goto wait_other_side;
5349 }
5350
5351 /* When we get here, it means that both the request and the
5352 * response have finished receiving. Depending on the connection
5353 * mode, we'll have to wait for the last bytes to leave in either
5354 * direction, and sometimes for a close to be effective.
5355 */
5356
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5357 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5358 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5359 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5360 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5361 }
5362 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5363 /* Option forceclose is set, or either side wants to close,
5364 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5365 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5366 * once both states are CLOSED.
5367 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5368 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5369 channel_shutr_now(chn);
5370 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5371 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5372 }
5373 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5374 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5375 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5376 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5377 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5378 channel_auto_read(chn);
5379 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5380 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5381 }
5382
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5383 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5384 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5385 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5386
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5387 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5388 txn->req.msg_state = HTTP_MSG_CLOSING;
5389 goto http_msg_closing;
5390 }
5391 else {
5392 txn->req.msg_state = HTTP_MSG_CLOSED;
5393 goto http_msg_closed;
5394 }
5395 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5396 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5397 }
5398
5399 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5400 http_msg_closing:
5401 /* nothing else to forward, just waiting for the output buffer
5402 * to be empty and for the shutw_now to take effect.
5403 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5404 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5405 txn->req.msg_state = HTTP_MSG_CLOSED;
5406 goto http_msg_closed;
5407 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5408 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5409 txn->req.msg_state = HTTP_MSG_ERROR;
5410 goto wait_other_side;
5411 }
5412 }
5413
5414 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5415 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5416 /* see above in MSG_DONE why we only do this in these states */
5417 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5418 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5419 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5420 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5421 goto wait_other_side;
5422 }
5423
5424 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5425 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5426}
5427
5428
5429/* This function updates the response state machine according to the request
5430 * state machine and buffer flags. It returns 1 if it changes anything (flag
5431 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5432 * it is only used to find when a request/response couple is complete. Both
5433 * this function and its equivalent should loop until both return zero. It
5434 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5435 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5436int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5437{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5438 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5439 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5440 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5441 unsigned int old_state = txn->rsp.msg_state;
5442
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5443 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5444 return 0;
5445
5446 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5447 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5448 * still monitor the server connection for a possible close
5449 * while the request is being uploaded, so we don't disable
5450 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5451 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5452 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5453
5454 if (txn->req.msg_state == HTTP_MSG_ERROR)
5455 goto wait_other_side;
5456
5457 if (txn->req.msg_state < HTTP_MSG_DONE) {
5458 /* The client seems to still be sending data, probably
5459 * because we got an error response during an upload.
5460 * We have the choice of either breaking the connection
5461 * or letting it pass through. Let's do the later.
5462 */
5463 goto wait_other_side;
5464 }
5465
5466 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5467 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5468 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5469 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5470 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5471 goto wait_other_side;
5472 }
5473
5474 /* When we get here, it means that both the request and the
5475 * response have finished receiving. Depending on the connection
5476 * mode, we'll have to wait for the last bytes to leave in either
5477 * direction, and sometimes for a close to be effective.
5478 */
5479
5480 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5481 /* Server-close mode : shut read and wait for the request
5482 * side to close its output buffer. The caller will detect
5483 * when we're in DONE and the other is in CLOSED and will
5484 * catch that for the final cleanup.
5485 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5486 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5487 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5488 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5489 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5490 /* Option forceclose is set, or either side wants to close,
5491 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5492 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5493 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5494 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5495 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5496 channel_shutr_now(chn);
5497 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5498 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5499 }
5500 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5501 /* The last possible modes are keep-alive and tunnel. Tunnel will
5502 * need to forward remaining data. Keep-alive will need to monitor
5503 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5504 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5505 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5506 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5507 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5508 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5509 }
5510
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5511 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5512 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5513 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5514 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5515 goto http_msg_closing;
5516 }
5517 else {
5518 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5519 goto http_msg_closed;
5520 }
5521 }
5522 goto wait_other_side;
5523 }
5524
5525 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5526 http_msg_closing:
5527 /* nothing else to forward, just waiting for the output buffer
5528 * to be empty and for the shutw_now to take effect.
5529 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5530 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5531 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5532 goto http_msg_closed;
5533 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5534 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5535 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5536 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5537 if (objt_server(s->target))
5538 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5539 goto wait_other_side;
5540 }
5541 }
5542
5543 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5544 http_msg_closed:
5545 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5546 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5547 channel_auto_close(chn);
5548 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5549 goto wait_other_side;
5550 }
5551
5552 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5553 /* We force the response to leave immediately if we're waiting for the
5554 * other side, since there is no pending shutdown to push it out.
5555 */
5556 if (!channel_is_empty(chn))
5557 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5558 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5559}
5560
5561
5562/* Resync the request and response state machines. Return 1 if either state
5563 * changes.
5564 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5565int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5566{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5567 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5568 int old_req_state = txn->req.msg_state;
5569 int old_res_state = txn->rsp.msg_state;
5570
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5571 http_sync_req_state(s);
5572 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5573 if (!http_sync_res_state(s))
5574 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5575 if (!http_sync_req_state(s))
5576 break;
5577 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5578
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5579 /* OK, both state machines agree on a compatible state.
5580 * There are a few cases we're interested in :
5581 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5582 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5583 * directions, so let's simply disable both analysers.
5584 * - HTTP_MSG_CLOSED on the response only means we must abort the
5585 * request.
5586 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5587 * with server-close mode means we've completed one request and we
5588 * must re-initialize the server connection.
5589 */
5590
5591 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5592 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5593 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5594 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5595 s->req.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5596 channel_auto_close(&s->req);
5597 channel_auto_read(&s->req);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5598 s->res.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5599 channel_auto_close(&s->res);
5600 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5601 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5602 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5603 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5604 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5605 txn->req.msg_state == HTTP_MSG_ERROR) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5606 s->res.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5607 channel_auto_close(&s->res);
5608 channel_auto_read(&s->res);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5609 s->req.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5610 channel_abort(&s->req);
5611 channel_auto_close(&s->req);
5612 channel_auto_read(&s->req);
5613 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5614 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5615 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5616 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5617 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5618 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5619 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5620 /* server-close/keep-alive: terminate this transaction,
5621 * possibly killing the server connection and reinitialize
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5622 * a fresh-new transaction, but only once we're sure there's
5623 * enough room in the request and response buffer to process
5624 * another request. The request buffer must not hold any
5625 * pending output data and the request buffer must not have
5626 * output data occupying the reserve.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5627 */
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5628 if (s->req.buf->o)
5629 s->req.flags |= CF_WAKE_WRITE;
5630 else if (channel_congested(&s->res))
5631 s->res.flags |= CF_WAKE_WRITE;
5632 else
5633 http_end_txn_clean_session(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5634 }
5635
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5636 return txn->req.msg_state != old_req_state ||
5637 txn->rsp.msg_state != old_res_state;
5638}
5639
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5640/* This function is an analyser which forwards request body (including chunk
5641 * sizes if any). It is called as soon as we must forward, even if we forward
5642 * zero byte. The only situation where it must not be called is when we're in
5643 * tunnel mode and we want to forward till the close. It's used both to forward
5644 * remaining data and to resync after end of body. It expects the msg_state to
5645 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5646 * read more data, or 1 once we can go on with next request or end the stream.
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5647 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5648 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5649 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5650int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5651{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5652 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5653 struct http_txn *txn = s->txn;
5654 struct http_msg *msg = &s->txn->req;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5655 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5656
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5657 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5658 return 0;
5659
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5660 if ((req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5661 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5662 /* Output closed while we were sending data. We must abort and
5663 * wake the other side up.
5664 */
5665 msg->msg_state = HTTP_MSG_ERROR;
5666 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5667 return 1;
5668 }
5669
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5670 /* Note that we don't have to send 100-continue back because we don't
5671 * need the data to complete our job, and it's up to the server to
5672 * decide whether to return 100, 417 or anything else in return of
5673 * an "Expect: 100-continue" header.
5674 */
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5675 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5676 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
5677 ? HTTP_MSG_CHUNK_SIZE
5678 : HTTP_MSG_DATA);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5679
5680 /* TODO/filters: when http-buffer-request option is set or if a
5681 * rule on url_param exists, the first chunk size could be
5682 * already parsed. In that case, msg->next is after the chunk
5683 * size (including the CRLF after the size). So this case should
5684 * be handled to */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5685 }
5686
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5687 /* Some post-connect processing might want us to refrain from starting to
5688 * forward data. Currently, the only reason for this is "balance url_param"
5689 * whichs need to parse/process the request after we've enabled forwarding.
5690 */
5691 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5692 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5693 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5694 req->flags |= CF_WAKE_CONNECT;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5695 goto missing_data_or_waiting;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5696 }
5697 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5698 }
5699
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5700 /* in most states, we should abort in case of early close */
5701 channel_auto_close(req);
5702
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5703 if (req->to_forward) {
5704 /* We can't process the buffer's contents yet */
5705 req->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5706 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5707 }
5708
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5709 if (msg->msg_state < HTTP_MSG_DONE) {
5710 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
5711 ? http_msg_forward_chunked_body(s, msg)
5712 : http_msg_forward_body(s, msg));
5713 if (!ret)
5714 goto missing_data_or_waiting;
5715 if (ret < 0)
5716 goto return_bad_req;
5717 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5718
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5719 /* other states, DONE...TUNNEL */
5720 /* we don't want to forward closes on DONE except in tunnel mode. */
5721 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5722 channel_dont_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5723
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5724 ret = msg->msg_state;
5725 if (http_resync_states(s)) {
5726 /* some state changes occurred, maybe the analyser
5727 * was disabled too. */
5728 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5729 if (req->flags & CF_SHUTW) {
5730 /* request errors are most likely due to the
5731 * server aborting the transfer. */
5732 goto aborted_xfer;
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5733 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5734 if (msg->err_pos >= 0)
5735 http_capture_bad_message(&sess->fe->invalid_req, s, msg, ret, s->be);
5736 goto return_bad_req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5737 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5738 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5739 }
5740
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5741 /* If "option abortonclose" is set on the backend, we want to monitor
5742 * the client's connection and forward any shutdown notification to the
5743 * server, which will decide whether to close or to go on processing the
5744 * request. We only do that in tunnel mode, and not in other modes since
5745 * it can be abused to exhaust source ports. */
5746 if (s->be->options & PR_O_ABRT_CLOSE) {
5747 channel_auto_read(req);
5748 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5749 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5750 s->si[1].flags |= SI_FL_NOLINGER;
5751 channel_auto_close(req);
5752 }
5753 else if (s->txn->meth == HTTP_METH_POST) {
5754 /* POST requests may require to read extra CRLF sent by broken
5755 * browsers and which could cause an RST to be sent upon close
5756 * on some systems (eg: Linux). */
5757 channel_auto_read(req);
5758 }
5759 return 0;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5760
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5761 missing_data_or_waiting:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5762 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5763 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5764 if (!(s->flags & SF_ERR_MASK))
5765 s->flags |= SF_ERR_CLICL;
5766 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5767 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5768 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5769 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5770 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5771 }
5772
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5773 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5774 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5775 if (objt_server(s->target))
5776 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5777
5778 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5779 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5780
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5781 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5782 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5783 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5784
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5785 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5786 * chunks even if the client has closed, so we don't want to set CF_DONTCLOSE.
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5787 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5788 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5789 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5790
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5791 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5792 * what we did. So we always set the CF_EXPECT_MORE flag so that the
Willy Tarreau07293032011-05-30 18:29:28 +0200[diff] [blame]5793 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5794 * modes are already handled by the stream sock layer. We must not do
5795 * this in content-length mode because it could present the MSG_MORE
5796 * flag with the last block of forwarded data, which would cause an
5797 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5798 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5799 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5800 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5801
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5802 return 0;
5803
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5804 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5805 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5806 if (sess->listener->counters)
5807 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5808
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5809 return_bad_req_stats_ok:
5810 txn->req.msg_state = HTTP_MSG_ERROR;
5811 if (txn->status) {
5812 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5813 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5814 } else {
5815 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5816 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5817 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5818 req->analysers &= AN_FLT_END;
5819 s->res.analysers &= AN_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5820
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5821 if (!(s->flags & SF_ERR_MASK))
5822 s->flags |= SF_ERR_PRXCOND;
5823 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5824 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5825 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5826 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5827 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5828 }
5829 return 0;
5830
5831 aborted_xfer:
5832 txn->req.msg_state = HTTP_MSG_ERROR;
5833 if (txn->status) {
5834 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5835 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5836 } else {
5837 txn->status = 502;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5838 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5839 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5840 req->analysers &= AN_FLT_END;
5841 s->res.analysers &= AN_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5842
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5843 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5844 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5845 if (objt_server(s->target))
5846 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5847
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5848 if (!(s->flags & SF_ERR_MASK))
5849 s->flags |= SF_ERR_SRVCL;
5850 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5851 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5852 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5853 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5854 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5855 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5856 return 0;
5857}
5858
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5859/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5860 * processing can continue on next analysers, or zero if it either needs more
5861 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5862 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->res.analysers
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5863 * when it has nothing left to do, and may remove any analyser when it wants to
5864 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5865 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5866int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5867{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5868 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5869 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5870 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5871 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5872 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5873 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5874 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5875
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5876 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]5877 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5878 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5879 rep,
5880 rep->rex, rep->wex,
5881 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5882 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5883 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5884
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5885 /*
5886 * Now parse the partial (or complete) lines.
5887 * We will check the response syntax, and also join multi-line
5888 * headers. An index of all the lines will be elaborated while
5889 * parsing.
5890 *
5891 * For the parsing, we use a 28 states FSM.
5892 *
5893 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5894 * rep->buf->p = beginning of response
5895 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5896 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5897 * msg->eol = end of current header or line (LF or CRLF)
5898 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5899 */
5900
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5901 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5902 /* There's a protected area at the end of the buffer for rewriting
5903 * purposes. We don't want to start to parse the request if the
5904 * protected area is affected, because we may have to move processed
5905 * data later, which is much more complicated.
5906 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5907 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5908 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5909 /* some data has still not left the buffer, wake us once that's done */
5910 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5911 goto abort_response;
5912 channel_dont_close(rep);
5913 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5914 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5915 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5916 }
5917
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5918 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5919 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5920 buffer_slow_realign(rep->buf);
5921
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5922 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5923 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5924 }
5925
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5926 /* 1: we might have to print this header in debug mode */
5927 if (unlikely((global.mode & MODE_DEBUG) &&
5928 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5929 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5930 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5931
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5932 sol = rep->buf->p;
5933 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5934 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5935
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5936 sol += hdr_idx_first_pos(&txn->hdr_idx);
5937 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5938
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5939 while (cur_idx) {
5940 eol = sol + txn->hdr_idx.v[cur_idx].len;
5941 debug_hdr("srvhdr", s, sol, eol);
5942 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5943 cur_idx = txn->hdr_idx.v[cur_idx].next;
5944 }
5945 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5946
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5947 /*
5948 * Now we quickly check if we have found a full valid response.
5949 * If not so, we check the FD and buffer states before leaving.
5950 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5951 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5952 * responses are checked first.
5953 *
5954 * Depending on whether the client is still there or not, we
5955 * may send an error response back or not. Note that normally
5956 * we should only check for HTTP status there, and check I/O
5957 * errors somewhere else.
5958 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5959
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5960 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5961 /* Invalid response */
5962 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5963 /* we detected a parsing error. We want to archive this response
5964 * in the dedicated proxy area for later troubleshooting.
5965 */
5966 hdr_response_bad:
5967 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5968 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5969
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5970 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5971 if (objt_server(s->target)) {
5972 objt_server(s->target)->counters.failed_resp++;
5973 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5974 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5975 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5976 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5977 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5978 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5979 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5980 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5981 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5982
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5983 if (!(s->flags & SF_ERR_MASK))
5984 s->flags |= SF_ERR_PRXCOND;
5985 if (!(s->flags & SF_FINST_MASK))
5986 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5987
5988 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5989 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5990
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5991 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5992 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5993 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5994 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5995 goto hdr_response_bad;
5996 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5997
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5998 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5999 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6000 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6001 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]6002 else if (txn->flags & TX_NOT_FIRST)
6003 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6004
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6005 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6006 if (objt_server(s->target)) {
6007 objt_server(s->target)->counters.failed_resp++;
6008 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6009 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]6010
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6011 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6012 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6013 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6014 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6015 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6016 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]6017
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6018 if (!(s->flags & SF_ERR_MASK))
6019 s->flags |= SF_ERR_SRVCL;
6020 if (!(s->flags & SF_FINST_MASK))
6021 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]6022 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6023 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6024
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]6025 /* read timeout : return a 504 to the client. */
6026 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6027 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6028 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6029
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6030 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6031 if (objt_server(s->target)) {
6032 objt_server(s->target)->counters.failed_resp++;
6033 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6034 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6035
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6036 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6037 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6038 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6039 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6040 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6041 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6042
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6043 if (!(s->flags & SF_ERR_MASK))
6044 s->flags |= SF_ERR_SRVTO;
6045 if (!(s->flags & SF_FINST_MASK))
6046 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6047 return 0;
6048 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]6049
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6050 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6051 else if ((rep->flags & CF_SHUTR) && ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6052 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6053 s->be->be_counters.cli_aborts++;
6054 if (objt_server(s->target))
6055 objt_server(s->target)->counters.cli_aborts++;
6056
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6057 rep->analysers &= AN_FLT_END;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6058 channel_auto_close(rep);
6059
6060 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6061 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6062 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6063
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6064 if (!(s->flags & SF_ERR_MASK))
6065 s->flags |= SF_ERR_CLICL;
6066 if (!(s->flags & SF_FINST_MASK))
6067 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6068
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6069 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6070 return 0;
6071 }
6072
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6073 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6074 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6075 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6076 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]6077 else if (txn->flags & TX_NOT_FIRST)
6078 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6079
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6080 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6081 if (objt_server(s->target)) {
6082 objt_server(s->target)->counters.failed_resp++;
6083 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6084 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6085
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6086 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6087 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6088 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6089 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6090 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6091 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6092
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6093 if (!(s->flags & SF_ERR_MASK))
6094 s->flags |= SF_ERR_SRVCL;
6095 if (!(s->flags & SF_FINST_MASK))
6096 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6097 return 0;
6098 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6099
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6100 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6101 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6102 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6103 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]6104 else if (txn->flags & TX_NOT_FIRST)
6105 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6106
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6107 s->be->be_counters.failed_resp++;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6108 rep->analysers &= AN_FLT_END;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6109 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6110
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6111 if (!(s->flags & SF_ERR_MASK))
6112 s->flags |= SF_ERR_CLICL;
6113 if (!(s->flags & SF_FINST_MASK))
6114 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6115
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6116 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6117 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6118 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6119
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6120 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]6121 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6122 return 0;
6123 }
6124
6125 /* More interesting part now : we know that we have a complete
6126 * response which at least looks like HTTP. We have an indicator
6127 * of each header's length, so we can parse them quickly.
6128 */
6129
6130 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6131 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6132
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6133 /*
6134 * 1: get the status code
6135 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6136 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6137 if (n < 1 || n > 5)
6138 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6139 /* when the client triggers a 4xx from the server, it's most often due
6140 * to a missing object or permission. These events should be tracked
6141 * because if they happen often, it may indicate a brute force or a
6142 * vulnerability scan.
6143 */
6144 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6145 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6146
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6147 if (objt_server(s->target))
6148 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6149
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]6150 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
6151 * exactly one digit "." one digit. This check may be disabled using
6152 * option accept-invalid-http-response.
6153 */
6154 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
6155 if (msg->sl.st.v_l != 8) {
6156 msg->err_pos = 0;
6157 goto hdr_response_bad;
6158 }
6159
6160 if (rep->buf->p[4] != '/' ||
6161 !isdigit((unsigned char)rep->buf->p[5]) ||
6162 rep->buf->p[6] != '.' ||
6163 !isdigit((unsigned char)rep->buf->p[7])) {
6164 msg->err_pos = 4;
6165 goto hdr_response_bad;
6166 }
6167 }
6168
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6169 /* check if the response is HTTP/1.1 or above */
6170 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6171 ((rep->buf->p[5] > '1') ||
6172 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6173 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6174
6175 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6176 txn->flags &= ~(TX_HDR_CONN_PRS|TX_HDR_CONN_CLO|TX_HDR_CONN_KAL|TX_HDR_CONN_UPG|TX_CON_CLO_SET|TX_CON_KAL_SET);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6177
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6178 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6179 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6180
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6181 txn->status = strl2ui(rep->buf->p + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6182
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6183 /* Adjust server's health based on status code. Note: status codes 501
6184 * and 505 are triggered on demand by client request, so we must not
6185 * count them as server failures.
6186 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6187 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6188 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6189 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6190 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6191 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6192 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6193
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6194 /*
6195 * 2: check for cacheability.
6196 */
6197
6198 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6199 case 100:
6200 /*
6201 * We may be facing a 100-continue response, in which case this
6202 * is not the right response, and we're waiting for the next one.
6203 * Let's allow this response to go to the client and wait for the
6204 * next one.
6205 */
6206 hdr_idx_init(&txn->hdr_idx);
6207 msg->next -= channel_forward(rep, msg->next);
6208 msg->msg_state = HTTP_MSG_RPBEFORE;
6209 txn->status = 0;
6210 s->logs.t_data = -1; /* was not a response yet */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6211 FLT_STRM_CB(s, flt_http_reset(s, msg));
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6212 goto next_one;
6213
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6214 case 200:
6215 case 203:
6216 case 206:
6217 case 300:
6218 case 301:
6219 case 410:
6220 /* RFC2616 @13.4:
6221 * "A response received with a status code of
6222 * 200, 203, 206, 300, 301 or 410 MAY be stored
6223 * by a cache (...) unless a cache-control
6224 * directive prohibits caching."
6225 *
6226 * RFC2616 @9.5: POST method :
6227 * "Responses to this method are not cacheable,
6228 * unless the response includes appropriate
6229 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6230 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6231 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6232 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6233 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6234 break;
6235 default:
6236 break;
6237 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6238
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6239 /*
6240 * 3: we may need to capture headers
6241 */
6242 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6243 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6244 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6245 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6246
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6247 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6248 * by RFC7230#3.3.3 :
6249 *
6250 * The length of a message body is determined by one of the following
6251 * (in order of precedence):
6252 *
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame^]6253 * 1. Any 2xx (Successful) response to a CONNECT request implies that
6254 * the connection will become a tunnel immediately after the empty
6255 * line that concludes the header fields. A client MUST ignore
6256 * any Content-Length or Transfer-Encoding header fields received
6257 * in such a message. Any 101 response (Switching Protocols) is
6258 * managed in the same manner.
6259 *
6260 * 2. Any response to a HEAD request and any response with a 1xx
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6261 * (Informational), 204 (No Content), or 304 (Not Modified) status
6262 * code is always terminated by the first empty line after the
6263 * header fields, regardless of the header fields present in the
6264 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6265 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6266 * 3. If a Transfer-Encoding header field is present and the chunked
6267 * transfer coding (Section 4.1) is the final encoding, the message
6268 * body length is determined by reading and decoding the chunked
6269 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6270 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6271 * If a Transfer-Encoding header field is present in a response and
6272 * the chunked transfer coding is not the final encoding, the
6273 * message body length is determined by reading the connection until
6274 * it is closed by the server. If a Transfer-Encoding header field
6275 * is present in a request and the chunked transfer coding is not
6276 * the final encoding, the message body length cannot be determined
6277 * reliably; the server MUST respond with the 400 (Bad Request)
6278 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6279 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6280 * If a message is received with both a Transfer-Encoding and a
6281 * Content-Length header field, the Transfer-Encoding overrides the
6282 * Content-Length. Such a message might indicate an attempt to
6283 * perform request smuggling (Section 9.5) or response splitting
6284 * (Section 9.4) and ought to be handled as an error. A sender MUST
6285 * remove the received Content-Length field prior to forwarding such
6286 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6287 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6288 * 4. If a message is received without Transfer-Encoding and with
6289 * either multiple Content-Length header fields having differing
6290 * field-values or a single Content-Length header field having an
6291 * invalid value, then the message framing is invalid and the
6292 * recipient MUST treat it as an unrecoverable error. If this is a
6293 * request message, the server MUST respond with a 400 (Bad Request)
6294 * status code and then close the connection. If this is a response
6295 * message received by a proxy, the proxy MUST close the connection
6296 * to the server, discard the received response, and send a 502 (Bad
6297 * Gateway) response to the client. If this is a response message
6298 * received by a user agent, the user agent MUST close the
6299 * connection to the server and discard the received response.
6300 *
6301 * 5. If a valid Content-Length header field is present without
6302 * Transfer-Encoding, its decimal value defines the expected message
6303 * body length in octets. If the sender closes the connection or
6304 * the recipient times out before the indicated number of octets are
6305 * received, the recipient MUST consider the message to be
6306 * incomplete and close the connection.
6307 *
6308 * 6. If this is a request message and none of the above are true, then
6309 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6310 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6311 * 7. Otherwise, this is a response message without a declared message
6312 * body length, so the message body length is determined by the
6313 * number of octets received prior to the server closing the
6314 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6315 */
6316
6317 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6318 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6319 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6320 * FIXME: should we parse anyway and return an error on chunked encoding ?
6321 */
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame^]6322 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6323 txn->status == 101)) {
6324 /* Either we've established an explicit tunnel, or we're
6325 * switching the protocol. In both cases, we're very unlikely
6326 * to understand the next protocols. We have to switch to tunnel
6327 * mode, so that we transfer the request and responses then let
6328 * this protocol pass unmodified. When we later implement specific
6329 * parsers for such protocols, we'll want to check the Upgrade
6330 * header which contains information about that protocol for
6331 * responses with status 101 (eg: see RFC2817 about TLS).
6332 */
6333 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6334 msg->flags |= HTTP_MSGF_XFER_LEN;
6335 goto end;
6336 }
6337
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6338 if (txn->meth == HTTP_METH_HEAD ||
6339 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6340 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6341 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6342 goto skip_content_length;
6343 }
6344
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6345 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6346 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6347 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6348 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6349 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6350 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6351 /* bad transfer-encoding (chunked followed by something else) */
6352 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6353 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6354 break;
6355 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6356 }
6357
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6358 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6359 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6360 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6361 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6362 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6363 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6364 else while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6365 signed long long cl;
6366
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6367 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6368 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6369 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6370 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6371
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6372 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6373 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6374 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6375 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6376
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6377 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6378 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6379 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6380 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6381
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6382 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6383 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6384 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6385 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6386
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6387 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6388 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6389 }
6390
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame^]6391 skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6392 /* Now we have to check if we need to modify the Connection header.
6393 * This is more difficult on the response than it is on the request,
6394 * because we can have two different HTTP versions and we don't know
6395 * how the client will interprete a response. For instance, let's say
6396 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6397 * HTTP/1.1 response without any header. Maybe it will bound itself to
6398 * HTTP/1.0 because it only knows about it, and will consider the lack
6399 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6400 * the lack of header as a keep-alive. Thus we will use two flags
6401 * indicating how a request MAY be understood by the client. In case
6402 * of multiple possibilities, we'll fix the header to be explicit. If
6403 * ambiguous cases such as both close and keepalive are seen, then we
6404 * will fall back to explicit close. Note that we won't take risks with
6405 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6406 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6407 */
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame^]6408 if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6409 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
6410 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6411 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6412 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6413
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6414 /* this situation happens when combining pretend-keepalive with httpclose. */
6415 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6416 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6417 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6418 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6419
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6420 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6421 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6422 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6423 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6424
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6425 /* now adjust header transformations depending on current state */
6426 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6427 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6428 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6429 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6430 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6431 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6432 else { /* SCL / KAL */
6433 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6434 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6435 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6436 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6437
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6438 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6439 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6440
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6441 /* Some keep-alive responses are converted to Server-close if
6442 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6443 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6444 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6445 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6446 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6447 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6448 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6449 }
6450
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame^]6451 end:
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6452 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6453 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6454
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6455 /* end of job, return OK */
6456 rep->analysers &= ~an_bit;
6457 rep->analyse_exp = TICK_ETERNITY;
6458 channel_auto_close(rep);
6459 return 1;
6460
6461 abort_keep_alive:
6462 /* A keep-alive request to the server failed on a network error.
6463 * The client is required to retry. We need to close without returning
6464 * any other information so that the client retries.
6465 */
6466 txn->status = 0;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6467 rep->analysers &= AN_FLT_END;
6468 s->req.analysers &= AN_FLT_END;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6469 channel_auto_close(rep);
6470 s->logs.logwait = 0;
6471 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6472 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6473 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6474 http_reply_and_close(s, txn->status, NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6475 return 0;
6476}
6477
6478/* This function performs all the processing enabled for the current response.
6479 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6480 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6481 * other functions. It works like process_request (see indications above).
6482 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6483int http_process_res_common(struct stream *s, struct channel *rep, int an_bit, struct proxy *px)
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6484{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6485 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6486 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6487 struct http_msg *msg = &txn->rsp;
6488 struct proxy *cur_proxy;
6489 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6490 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6491
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6492 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6493 now_ms, __FUNCTION__,
6494 s,
6495 rep,
6496 rep->rex, rep->wex,
6497 rep->flags,
6498 rep->buf->i,
6499 rep->analysers);
6500
6501 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6502 return 0;
6503
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6504 /* The stats applet needs to adjust the Connection header but we don't
6505 * apply any filter there.
6506 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6507 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6508 rep->analysers &= ~an_bit;
6509 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6510 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6511 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6512
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6513 /*
6514 * We will have to evaluate the filters.
6515 * As opposed to version 1.2, now they will be evaluated in the
6516 * filters order and not in the header order. This means that
6517 * each filter has to be validated among all headers.
6518 *
6519 * Filters are tried with ->be first, then with ->fe if it is
6520 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6521 *
6522 * Maybe we are in resume condiion. In this case I choose the
6523 * "struct proxy" which contains the rule list matching the resume
6524 * pointer. If none of theses "struct proxy" match, I initialise
6525 * the process with the first one.
6526 *
6527 * In fact, I check only correspondance betwwen the current list
6528 * pointer and the ->fe rule list. If it doesn't match, I initialize
6529 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6530 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6531 if (s->current_rule_list == &sess->fe->http_res_rules)
6532 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6533 else
6534 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6535 while (1) {
6536 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6537
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6538 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6539 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6540 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6541
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6542 if (ret == HTTP_RULE_RES_BADREQ)
6543 goto return_srv_prx_502;
6544
6545 if (ret == HTTP_RULE_RES_DONE) {
6546 rep->analysers &= ~an_bit;
6547 rep->analyse_exp = TICK_ETERNITY;
6548 return 1;
6549 }
6550 }
6551
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6552 /* we need to be called again. */
6553 if (ret == HTTP_RULE_RES_YIELD) {
6554 channel_dont_close(rep);
6555 return 0;
6556 }
6557
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6558 /* try headers filters */
6559 if (rule_set->rsp_exp != NULL) {
6560 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6561 return_bad_resp:
6562 if (objt_server(s->target)) {
6563 objt_server(s->target)->counters.failed_resp++;
6564 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6565 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6566 s->be->be_counters.failed_resp++;
6567 return_srv_prx_502:
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6568 rep->analysers &= AN_FLT_END;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6569 txn->status = 502;
6570 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6571 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6572 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6573 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6574 if (!(s->flags & SF_ERR_MASK))
6575 s->flags |= SF_ERR_PRXCOND;
6576 if (!(s->flags & SF_FINST_MASK))
6577 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6578 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6579 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6580 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6581
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6582 /* has the response been denied ? */
6583 if (txn->flags & TX_SVDENY) {
6584 if (objt_server(s->target))
6585 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6586
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6587 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6588 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6589 if (sess->listener->counters)
6590 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6591
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6592 goto return_srv_prx_502;
6593 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6594
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6595 /* add response headers from the rule sets in the same order */
6596 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6597 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6598 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6599 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6600 int ret = acl_exec_cond(wl->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6601 ret = acl_pass(ret);
6602 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6603 ret = !ret;
6604 if (!ret)
6605 continue;
6606 }
6607 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6608 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6609 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6610
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6611 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6612 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6613 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6614 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6615 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6616
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6617 /* After this point, this anayzer can't return yield, so we can
6618 * remove the bit corresponding to this analyzer from the list.
6619 *
6620 * Note that the intermediate returns and goto found previously
6621 * reset the analyzers.
6622 */
6623 rep->analysers &= ~an_bit;
6624 rep->analyse_exp = TICK_ETERNITY;
6625
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6626 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6627 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6628 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6629
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6630 /*
6631 * Now check for a server cookie.
6632 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]6633 if (s->be->cookie_name || sess->fe->capture_name || (s->be->options & PR_O_CHK_CACHE))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6634 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6635
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6636 /*
6637 * Check for cache-control or pragma headers if required.
6638 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6639 if (((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)) && txn->status != 101)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6640 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6641
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6642 /*
6643 * Add server cookie in the response if needed
6644 */
6645 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6646 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6647 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6648 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6649 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6650 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6651 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6652 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6653 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6654 /* the server is known, it's not the one the client requested, or the
6655 * cookie's last seen date needs to be refreshed. We have to
6656 * insert a set-cookie here, except if we want to insert only on POST
6657 * requests and this one isn't. Note that servers which don't have cookies
6658 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6659 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6660 if (!objt_server(s->target)->cookie) {
6661 chunk_printf(&trash,
6662 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6663 s->be->cookie_name);
6664 }
6665 else {
6666 chunk_printf(&trash, "Set-Cookie: %s=%s", s->be->cookie_name, objt_server(s->target)->cookie);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6667
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6668 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6669 /* emit last_date, which is mandatory */
6670 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6671 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6672 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6673
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6674 if (s->be->cookie_maxlife) {
6675 /* emit first_date, which is either the original one or
6676 * the current date.
6677 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6678 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6679 s30tob64(txn->cookie_first_date ?
6680 txn->cookie_first_date >> 2 :
6681 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6682 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6683 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6684 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6685 chunk_appendf(&trash, "; path=/");
6686 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6687
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6688 if (s->be->cookie_domain)
6689 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6690
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6691 if (s->be->ck_opts & PR_CK_HTTPONLY)
6692 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6693
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6694 if (s->be->ck_opts & PR_CK_SECURE)
6695 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6696
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6697 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6698 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6699
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6700 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6701 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6702 /* the server did not change, only the date was updated */
6703 txn->flags |= TX_SCK_UPDATED;
6704 else
6705 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6706
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6707 /* Here, we will tell an eventual cache on the client side that we don't
6708 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6709 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6710 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6711 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6712 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6713
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6714 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6715
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6716 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6717 "Cache-control: private", 22) < 0))
6718 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6719 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6720 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6721
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6722 /*
6723 * Check if result will be cacheable with a cookie.
6724 * We'll block the response if security checks have caught
6725 * nasty things such as a cacheable cookie.
6726 */
6727 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6728 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6729 (s->be->options & PR_O_CHK_CACHE)) {
6730 /* we're in presence of a cacheable response containing
6731 * a set-cookie header. We'll block it as requested by
6732 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6733 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6734 if (objt_server(s->target))
6735 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6736
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6737 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6738 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6739 if (sess->listener->counters)
6740 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6741
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6742 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6743 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6744 send_log(s->be, LOG_ALERT,
6745 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6746 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6747 goto return_srv_prx_502;
6748 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6749
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6750 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6751 /*
6752 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6753 * If an "Upgrade" token is found, the header is left untouched in order
6754 * not to have to deal with some client bugs : some of them fail an upgrade
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6755 * if anything but "Upgrade" is present in the Connection header. We don't
6756 * want to touch any 101 response either since it's switching to another
6757 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6758 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6759 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6760 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6761 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6762 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6763 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6764
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6765 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6766 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6767 /* we want a keep-alive response here. Keep-alive header
6768 * required if either side is not 1.1.
6769 */
6770 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6771 want_flags |= TX_CON_KAL_SET;
6772 }
6773 else {
6774 /* we want a close response here. Close header required if
6775 * the server is 1.1, regardless of the client.
6776 */
6777 if (msg->flags & HTTP_MSGF_VER_11)
6778 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6779 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6780
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6781 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6782 http_change_connection_header(txn, msg, want_flags);
6783 }
6784
6785 skip_header_mangling:
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6786 if ((msg->flags & HTTP_MSGF_XFER_LEN) || HAS_FILTERS(s) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6787 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
6788 rep->analysers &= ~AN_FLT_XFER_DATA;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6789 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6790 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6791
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6792 /* if the user wants to log as soon as possible, without counting
6793 * bytes from the server, then this is the right moment. We have
6794 * to temporarily assign bytes_out to log what we currently have.
6795 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6796 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6797 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6798 s->logs.bytes_out = txn->rsp.eoh;
6799 s->do_log(s);
6800 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6801 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6802 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6803}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6804
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6805/* This function is an analyser which forwards response body (including chunk
6806 * sizes if any). It is called as soon as we must forward, even if we forward
6807 * zero byte. The only situation where it must not be called is when we're in
6808 * tunnel mode and we want to forward till the close. It's used both to forward
6809 * remaining data and to resync after end of body. It expects the msg_state to
6810 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6811 * read more data, or 1 once we can go on with next request or end the stream.
Willy Tarreaud3510212014-04-21 11:24:13 +0200[diff] [blame]6812 *
6813 * It is capable of compressing response data both in content-length mode and
6814 * in chunked mode. The state machines follows different flows depending on
6815 * whether content-length and chunked modes are used, since there are no
6816 * trailers in content-length :
6817 *
6818 * chk-mode cl-mode
6819 * ,----- BODY -----.
6820 * / \
6821 * V size > 0 V chk-mode
6822 * .--> SIZE -------------> DATA -------------> CRLF
6823 * | | size == 0 | last byte |
6824 * | v final crlf v inspected |
6825 * | TRAILERS -----------> DONE |
6826 * | |
6827 * `----------------------------------------------'
6828 *
6829 * Compression only happens in the DATA state, and must be flushed in final
6830 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6831 * is performed at once on final states for all bytes parsed, or when leaving
6832 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6833 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6834int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6835{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6836 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6837 struct http_txn *txn = s->txn;
6838 struct http_msg *msg = &s->txn->rsp;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6839 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6840
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6841 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6842 return 0;
6843
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6844 if ((res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6845 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6846 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6847 /* Output closed while we were sending data. We must abort and
6848 * wake the other side up.
6849 */
6850 msg->msg_state = HTTP_MSG_ERROR;
6851 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6852 return 1;
6853 }
6854
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6855 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6856 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6857
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6858 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6859 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
6860 ? HTTP_MSG_CHUNK_SIZE
6861 : HTTP_MSG_DATA);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6862 }
6863
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6864 if (res->to_forward) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6865 /* We can't process the buffer's contents yet */
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6866 res->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6867 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6868 }
6869
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6870 if (msg->msg_state < HTTP_MSG_DONE) {
6871 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
6872 ? http_msg_forward_chunked_body(s, msg)
6873 : http_msg_forward_body(s, msg));
6874 if (!ret)
6875 goto missing_data_or_waiting;
6876 if (ret < 0)
6877 goto return_bad_res;
6878 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6879
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6880 /* other states, DONE...TUNNEL */
6881 /* for keep-alive we don't want to forward closes on DONE */
6882 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6883 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
6884 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6885
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6886 ret = msg->msg_state;
6887 if (http_resync_states(s)) {
6888 /* some state changes occurred, maybe the analyser was disabled
6889 * too. */
6890 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
6891 if (res->flags & CF_SHUTW) {
6892 /* response errors are most likely due to the
6893 * client aborting the transfer. */
6894 goto aborted_xfer;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6895 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6896 if (msg->err_pos >= 0)
6897 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, strm_fe(s));
6898 goto return_bad_res;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6899 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6900 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6901 }
Willy Tarreauf51d03c2016-05-02 15:25:15 +0200[diff] [blame]6902 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6903
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6904 missing_data_or_waiting:
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6905 if (res->flags & CF_SHUTW)
6906 goto aborted_xfer;
6907
6908 /* stop waiting for data if the input is closed before the end. If the
6909 * client side was already closed, it means that the client has aborted,
6910 * so we don't want to count this as a server abort. Otherwise it's a
6911 * server abort.
6912 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6913 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6914 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6915 goto aborted_xfer;
Christopher Fauleta46bbd82015-06-19 09:00:58 +0200[diff] [blame]6916 /* If we have some pending data, we continue the processing */
6917 if (!buffer_pending(res->buf)) {
6918 if (!(s->flags & SF_ERR_MASK))
6919 s->flags |= SF_ERR_SRVCL;
6920 s->be->be_counters.srv_aborts++;
6921 if (objt_server(s->target))
6922 objt_server(s->target)->counters.srv_aborts++;
6923 goto return_bad_res_stats_ok;
6924 }
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6925 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6926
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6927 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6928 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6929 goto return_bad_res;
6930
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6931 /* When TE: chunked is used, we need to get there again to parse
6932 * remaining chunks even if the server has closed, so we don't want to
6933 * set CF_DONTCLOSE. Similarly, if the body length is undefined, if
6934 * keep-alive is set on the client side or if there are filters
6935 * registered on the stream, we don't want to forward a close
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6936 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6937 if ((msg->flags & HTTP_MSGF_TE_CHNK) || !msg->body_len ||
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6938 HAS_FILTERS(s) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6939 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6940 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6941 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6942
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6943 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6944 * what we did. So we always set the CF_EXPECT_MORE flag so that the
Willy Tarreau07293032011-05-30 18:29:28 +0200[diff] [blame]6945 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6946 * modes are already handled by the stream sock layer. We must not do
6947 * this in content-length mode because it could present the MSG_MORE
6948 * flag with the last block of forwarded data, which would cause an
6949 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6950 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6951 if ((msg->flags & HTTP_MSGF_TE_CHNK) || (msg->flags & HTTP_MSGF_COMPRESSING))
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6952 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6953
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6954 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6955 return 0;
6956
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6957 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6958 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6959 if (objt_server(s->target))
6960 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6961
6962 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6963 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6964 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6965 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6966 res->analysers &= AN_FLT_END;
6967 s->req.analysers &= AN_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6968 if (objt_server(s->target))
6969 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6970
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6971 if (!(s->flags & SF_ERR_MASK))
6972 s->flags |= SF_ERR_PRXCOND;
6973 if (!(s->flags & SF_FINST_MASK))
6974 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6975 return 0;
6976
6977 aborted_xfer:
6978 txn->rsp.msg_state = HTTP_MSG_ERROR;
6979 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6980 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6981 res->analysers &= AN_FLT_END;
6982 s->req.analysers &= AN_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6983
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6984 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6985 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6986 if (objt_server(s->target))
6987 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6988
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6989 if (!(s->flags & SF_ERR_MASK))
6990 s->flags |= SF_ERR_CLICL;
6991 if (!(s->flags & SF_FINST_MASK))
6992 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6993 return 0;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6994}
6995
6996
6997static inline int
6998http_msg_forward_body(struct stream *s, struct http_msg *msg)
6999{
7000 struct channel *chn = msg->chn;
7001 int ret;
7002
7003 /* Here we have the guarantee to be in HTTP_MSG_DATA or HTTP_MSG_ENDING state */
7004
7005 if (msg->msg_state == HTTP_MSG_ENDING)
7006 goto ending;
7007
7008 /* Neither content-length, nor transfer-encoding was found, so we must
7009 * read the body until the server connection is closed. In that case, we
7010 * eat data as they come. Of course, this happens for response only. */
7011 if (!(msg->flags & HTTP_MSGF_XFER_LEN)) {
7012 unsigned long long len = (chn->buf->i - msg->next);
7013 msg->chunk_len += len;
7014 msg->body_len += len;
7015 }
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7016 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
7017 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
7018 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7019 msg->next += ret;
7020 msg->chunk_len -= ret;
7021 if (msg->chunk_len) {
7022 /* input empty or output full */
7023 if (chn->buf->i > msg->next)
7024 chn->flags |= CF_WAKE_WRITE;
7025 goto missing_data_or_waiting;
7026 }
7027
7028 if (!(msg->flags & HTTP_MSGF_XFER_LEN) && !(chn->flags & CF_SHUTR)) {
7029 /* The server still sending data */
7030 goto missing_data_or_waiting;
7031 }
7032 msg->msg_state = HTTP_MSG_ENDING;
7033
7034 ending:
7035 /* we may have some pending data starting at res->buf->p such as a last
7036 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7037 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
7038 /* default_ret */ msg->next,
7039 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7040 b_adv(chn->buf, ret);
7041 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7042 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
7043 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7044 if (msg->next)
7045 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7046
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7047 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
7048 /* default_ret */ 1,
7049 /* on_error */ goto error,
7050 /* on_wait */ goto waiting);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7051 msg->msg_state = HTTP_MSG_DONE;
7052 return 1;
7053
7054 missing_data_or_waiting:
7055 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7056 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
7057 /* default_ret */ msg->next,
7058 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7059 b_adv(chn->buf, ret);
7060 msg->next -= ret;
7061 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
7062 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]7063 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7064 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7065 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7066 return 0;
7067 error:
7068 return -1;
7069}
7070
7071static inline int
7072http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg)
7073{
7074 struct channel *chn = msg->chn;
7075 int ret;
7076
7077 /* Here we have the guarantee to be in one of the following state:
7078 * HTTP_MSG_DATA, HTTP_MSG_CHUNK_SIZE, HTTP_MSG_CHUNK_CRLF,
7079 * HTTP_MSG_TRAILERS or HTTP_MSG_ENDING. */
7080
7081 switch_states:
7082 switch (msg->msg_state) {
7083 case HTTP_MSG_DATA:
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7084 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
7085 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
7086 /* on_error */ goto error);
7087 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7088 msg->chunk_len -= ret;
7089 if (msg->chunk_len) {
7090 /* input empty or output full */
7091 if (chn->buf->i > msg->next)
7092 chn->flags |= CF_WAKE_WRITE;
7093 goto missing_data_or_waiting;
7094 }
7095
7096 /* nothing left to forward for this chunk*/
7097 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
7098 /* fall through for HTTP_MSG_CHUNK_CRLF */
7099
7100 case HTTP_MSG_CHUNK_CRLF:
7101 /* we want the CRLF after the data */
7102 ret = http_skip_chunk_crlf(msg);
7103 if (ret == 0)
7104 goto missing_data_or_waiting;
7105 if (ret < 0)
7106 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]7107 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7108 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
7109 /* fall through for HTTP_MSG_CHUNK_SIZE */
7110
7111 case HTTP_MSG_CHUNK_SIZE:
7112 /* read the chunk size and assign it to ->chunk_len,
7113 * then set ->next to point to the body and switch to
7114 * DATA or TRAILERS state.
7115 */
7116 ret = http_parse_chunk_size(msg);
7117 if (ret == 0)
7118 goto missing_data_or_waiting;
7119 if (ret < 0)
7120 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]7121 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7122 if (msg->chunk_len) {
7123 msg->msg_state = HTTP_MSG_DATA;
7124 goto switch_states;
7125 }
7126 msg->msg_state = HTTP_MSG_TRAILERS;
7127 /* fall through for HTTP_MSG_TRAILERS */
7128
7129 case HTTP_MSG_TRAILERS:
7130 ret = http_forward_trailers(msg);
7131 if (ret < 0)
7132 goto chunk_parsing_error;
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7133 FLT_STRM_DATA_CB(s, chn, flt_http_chunk_trailers(s, msg),
7134 /* default_ret */ 1,
7135 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7136 msg->next += msg->sol;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7137 if (!ret)
7138 goto missing_data_or_waiting;
7139 break;
7140
7141 case HTTP_MSG_ENDING:
7142 goto ending;
7143
7144 default:
7145 /* This should no happen in this function */
7146 goto error;
7147 }
7148
7149 msg->msg_state = HTTP_MSG_ENDING;
7150 ending:
7151 /* we may have some pending data starting at res->buf->p such as a last
7152 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7153 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7154 /* default_ret */ msg->next,
7155 /* on_error */ goto error);
7156 b_adv(chn->buf, ret);
7157 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7158 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
7159 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7160 if (msg->next)
7161 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7162
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7163 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7164 /* default_ret */ 1,
7165 /* on_error */ goto error,
7166 /* on_wait */ goto waiting);
7167 msg->msg_state = HTTP_MSG_DONE;
7168 return 1;
7169
7170 missing_data_or_waiting:
7171 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7172 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7173 /* default_ret */ msg->next,
7174 /* on_error */ goto error);
7175 b_adv(chn->buf, ret);
7176 msg->next -= ret;
7177 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
7178 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]7179 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7180 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7181 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7182 return 0;
7183
7184 chunk_parsing_error:
7185 if (msg->err_pos >= 0) {
7186 if (chn->flags & CF_ISRESP)
7187 http_capture_bad_message(&s->be->invalid_rep, s, msg,
7188 msg->msg_state, strm_fe(s));
7189 else
7190 http_capture_bad_message(&strm_fe(s)->invalid_req, s,
7191 msg, msg->msg_state, s->be);
7192 }
7193 error:
7194 return -1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7195}
7196
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7197
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7198/* Iterate the same filter through all request headers.
7199 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7200 * Since it can manage the switch to another backend, it updates the per-proxy
7201 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7202 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7203int apply_filter_to_req_headers(struct stream *s, struct channel *req, struct hdr_exp *exp)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7204{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7205 char *cur_ptr, *cur_end, *cur_next;
7206 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7207 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7208 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7209 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7210
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7211 last_hdr = 0;
7212
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7213 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7214 old_idx = 0;
7215
7216 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7217 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7218 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7219 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7220 (exp->action == ACT_ALLOW ||
7221 exp->action == ACT_DENY ||
7222 exp->action == ACT_TARPIT))
7223 return 0;
7224
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7225 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7226 if (!cur_idx)
7227 break;
7228
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7229 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7230 cur_ptr = cur_next;
7231 cur_end = cur_ptr + cur_hdr->len;
7232 cur_next = cur_end + cur_hdr->cr + 1;
7233
7234 /* Now we have one header between cur_ptr and cur_end,
7235 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7236 */
7237
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7238 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7239 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7240 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7241 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7242 last_hdr = 1;
7243 break;
7244
7245 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7246 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7247 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7248 break;
7249
7250 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7251 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7252 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7253 break;
7254
7255 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7256 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7257 if (trash.len < 0)
7258 return -1;
7259
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7260 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7261 /* FIXME: if the user adds a newline in the replacement, the
7262 * index will not be recalculated for now, and the new line
7263 * will not be counted as a new header.
7264 */
7265
7266 cur_end += delta;
7267 cur_next += delta;
7268 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7269 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7270 break;
7271
7272 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7273 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7274 cur_next += delta;
7275
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7276 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7277 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7278 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7279 cur_hdr->len = 0;
7280 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7281 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7282 break;
7283
7284 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7285 }
7286
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7287 /* keep the link from this header to next one in case of later
7288 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7289 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7290 old_idx = cur_idx;
7291 }
7292 return 0;
7293}
7294
7295
7296/* Apply the filter to the request line.
7297 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7298 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7299 * Since it can manage the switch to another backend, it updates the per-proxy
7300 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7301 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7302int apply_filter_to_req_line(struct stream *s, struct channel *req, struct hdr_exp *exp)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7303{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7304 char *cur_ptr, *cur_end;
7305 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7306 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7307 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7308
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7309 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7310 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7311 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7312 (exp->action == ACT_ALLOW ||
7313 exp->action == ACT_DENY ||
7314 exp->action == ACT_TARPIT))
7315 return 0;
7316 else if (exp->action == ACT_REMOVE)
7317 return 0;
7318
7319 done = 0;
7320
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7321 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7322 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7323
7324 /* Now we have the request line between cur_ptr and cur_end */
7325
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7326 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7327 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7328 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7329 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7330 done = 1;
7331 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7332
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7333 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7334 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7335 done = 1;
7336 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7337
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7338 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7339 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7340 done = 1;
7341 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7342
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7343 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7344 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7345 if (trash.len < 0)
7346 return -1;
7347
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7348 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7349 /* FIXME: if the user adds a newline in the replacement, the
7350 * index will not be recalculated for now, and the new line
7351 * will not be counted as a new header.
7352 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7353
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7354 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7355 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7356 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7357 HTTP_MSG_RQMETH,
7358 cur_ptr, cur_end + 1,
7359 NULL, NULL);
7360 if (unlikely(!cur_end))
7361 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7362
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7363 /* we have a full request and we know that we have either a CR
7364 * or an LF at <ptr>.
7365 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7366 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7367 hdr_idx_set_start(&txn->hdr_idx, txn->req.sl.rq.l, *cur_end == '\r');
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7368 /* there is no point trying this regex on headers */
7369 return 1;
7370 }
7371 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7372 return done;
7373}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7374
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7375
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7376
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7377/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7378 * Apply all the req filters of proxy <px> to all headers in buffer <req> of stream <s>.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7379 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7380 * unparsable request. Since it can manage the switch to another backend, it
7381 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7382 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7383int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7384{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7385 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7386 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7387 struct hdr_exp *exp;
7388
7389 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7390 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7391
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7392 /*
7393 * The interleaving of transformations and verdicts
7394 * makes it difficult to decide to continue or stop
7395 * the evaluation.
7396 */
7397
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7398 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7399 break;
7400
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7401 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7402 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7403 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7404 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7405
7406 /* if this filter had a condition, evaluate it now and skip to
7407 * next filter if the condition does not match.
7408 */
7409 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7410 ret = acl_exec_cond(exp->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7411 ret = acl_pass(ret);
7412 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7413 ret = !ret;
7414
7415 if (!ret)
7416 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7417 }
7418
7419 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7420 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7421 if (unlikely(ret < 0))
7422 return -1;
7423
7424 if (likely(ret == 0)) {
7425 /* The filter did not match the request, it can be
7426 * iterated through all headers.
7427 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7428 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7429 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7430 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7431 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7432 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7433}
7434
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7435
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7436/* Find the end of a cookie value contained between <s> and <e>. It works the
7437 * same way as with headers above except that the semi-colon also ends a token.
7438 * See RFC2965 for more information. Note that it requires a valid header to
7439 * return a valid result.
7440 */
7441char *find_cookie_value_end(char *s, const char *e)
7442{
7443 int quoted, qdpair;
7444
7445 quoted = qdpair = 0;
7446 for (; s < e; s++) {
7447 if (qdpair) qdpair = 0;
7448 else if (quoted) {
7449 if (*s == '\\') qdpair = 1;
7450 else if (*s == '"') quoted = 0;
7451 }
7452 else if (*s == '"') quoted = 1;
7453 else if (*s == ',' || *s == ';') return s;
7454 }
7455 return s;
7456}
7457
7458/* Delete a value in a header between delimiters <from> and <next> in buffer
7459 * <buf>. The number of characters displaced is returned, and the pointer to
7460 * the first delimiter is updated if required. The function tries as much as
7461 * possible to respect the following principles :
7462 * - replace <from> delimiter by the <next> one unless <from> points to a
7463 * colon, in which case <next> is simply removed
7464 * - set exactly one space character after the new first delimiter, unless
7465 * there are not enough characters in the block being moved to do so.
7466 * - remove unneeded spaces before the previous delimiter and after the new
7467 * one.
7468 *
7469 * It is the caller's responsibility to ensure that :
7470 * - <from> points to a valid delimiter or the colon ;
7471 * - <next> points to a valid delimiter or the final CR/LF ;
7472 * - there are non-space chars before <from> ;
7473 * - there is a CR/LF at or after <next>.
7474 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7475int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7476{
7477 char *prev = *from;
7478
7479 if (*prev == ':') {
7480 /* We're removing the first value, preserve the colon and add a
7481 * space if possible.
7482 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7483 if (!HTTP_IS_CRLF(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7484 next++;
7485 prev++;
7486 if (prev < next)
7487 *prev++ = ' ';
7488
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7489 while (HTTP_IS_SPHT(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7490 next++;
7491 } else {
7492 /* Remove useless spaces before the old delimiter. */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7493 while (HTTP_IS_SPHT(*(prev-1)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7494 prev--;
7495 *from = prev;
7496
7497 /* copy the delimiter and if possible a space if we're
7498 * not at the end of the line.
7499 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7500 if (!HTTP_IS_CRLF(*next)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7501 *prev++ = *next++;
7502 if (prev + 1 < next)
7503 *prev++ = ' ';
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7504 while (HTTP_IS_SPHT(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7505 next++;
7506 }
7507 }
7508 return buffer_replace2(buf, prev, next, NULL, 0);
7509}
7510
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7511/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7512 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7513 * desirable to call it only when needed. This code is quite complex because
7514 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7515 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7516 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7517void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7518{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7519 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7520 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7521 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7522 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7523 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7524 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7525
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7526 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7527 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7528 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7529
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7530 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7531 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7532 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7533
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7534 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7535 hdr_beg = hdr_next;
7536 hdr_end = hdr_beg + cur_hdr->len;
7537 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7538
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7539 /* We have one full header between hdr_beg and hdr_end, and the
7540 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7541 * "Cookie:" headers.
7542 */
7543
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7544 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7545 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7546 old_idx = cur_idx;
7547 continue;
7548 }
7549
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7550 del_from = NULL; /* nothing to be deleted */
7551 preserve_hdr = 0; /* assume we may kill the whole header */
7552
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7553 /* Now look for cookies. Conforming to RFC2109, we have to support
7554 * attributes whose name begin with a '$', and associate them with
7555 * the right cookie, if we want to delete this cookie.
7556 * So there are 3 cases for each cookie read :
7557 * 1) it's a special attribute, beginning with a '$' : ignore it.
7558 * 2) it's a server id cookie that we *MAY* want to delete : save
7559 * some pointers on it (last semi-colon, beginning of cookie...)
7560 * 3) it's an application cookie : we *MAY* have to delete a previous
7561 * "special" cookie.
7562 * At the end of loop, if a "special" cookie remains, we may have to
7563 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7564 * *MUST* delete it.
7565 *
7566 * Note: RFC2965 is unclear about the processing of spaces around
7567 * the equal sign in the ATTR=VALUE form. A careful inspection of
7568 * the RFC explicitly allows spaces before it, and not within the
7569 * tokens (attrs or values). An inspection of RFC2109 allows that
7570 * too but section 10.1.3 lets one think that spaces may be allowed
7571 * after the equal sign too, resulting in some (rare) buggy
7572 * implementations trying to do that. So let's do what servers do.
7573 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7574 * allowed quoted strings in values, with any possible character
7575 * after a backslash, including control chars and delimitors, which
7576 * causes parsing to become ambiguous. Browsers also allow spaces
7577 * within values even without quotes.
7578 *
7579 * We have to keep multiple pointers in order to support cookie
7580 * removal at the beginning, middle or end of header without
7581 * corrupting the header. All of these headers are valid :
7582 *
7583 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7584 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7585 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7586 * | | | | | | | | |
7587 * | | | | | | | | hdr_end <--+
7588 * | | | | | | | +--> next
7589 * | | | | | | +----> val_end
7590 * | | | | | +-----------> val_beg
7591 * | | | | +--------------> equal
7592 * | | | +----------------> att_end
7593 * | | +---------------------> att_beg
7594 * | +--------------------------> prev
7595 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7596 */
7597
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7598 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7599 /* Iterate through all cookies on this line */
7600
7601 /* find att_beg */
7602 att_beg = prev + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7603 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7604 att_beg++;
7605
7606 /* find att_end : this is the first character after the last non
7607 * space before the equal. It may be equal to hdr_end.
7608 */
7609 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7610
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7611 while (equal < hdr_end) {
7612 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7613 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7614 if (HTTP_IS_SPHT(*equal++))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7615 continue;
7616 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7617 }
7618
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7619 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7620 * is between <att_beg> and <equal>, both may be identical.
7621 */
7622
7623 /* look for end of cookie if there is an equal sign */
7624 if (equal < hdr_end && *equal == '=') {
7625 /* look for the beginning of the value */
7626 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7627 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7628 val_beg++;
7629
7630 /* find the end of the value, respecting quotes */
7631 next = find_cookie_value_end(val_beg, hdr_end);
7632
7633 /* make val_end point to the first white space or delimitor after the value */
7634 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7635 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7636 val_end--;
7637 } else {
7638 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7639 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7640
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7641 /* We have nothing to do with attributes beginning with '$'. However,
7642 * they will automatically be removed if a header before them is removed,
7643 * since they're supposed to be linked together.
7644 */
7645 if (*att_beg == '$')
7646 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7647
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7648 /* Ignore cookies with no equal sign */
7649 if (equal == next) {
7650 /* This is not our cookie, so we must preserve it. But if we already
7651 * scheduled another cookie for removal, we cannot remove the
7652 * complete header, but we can remove the previous block itself.
7653 */
7654 preserve_hdr = 1;
7655 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7656 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7657 val_end += delta;
7658 next += delta;
7659 hdr_end += delta;
7660 hdr_next += delta;
7661 cur_hdr->len += delta;
7662 http_msg_move_end(&txn->req, delta);
7663 prev = del_from;
7664 del_from = NULL;
7665 }
7666 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7667 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7668
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7669 /* if there are spaces around the equal sign, we need to
7670 * strip them otherwise we'll get trouble for cookie captures,
7671 * or even for rewrites. Since this happens extremely rarely,
7672 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7673 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7674 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7675 int stripped_before = 0;
7676 int stripped_after = 0;
7677
7678 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7679 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7680 equal += stripped_before;
7681 val_beg += stripped_before;
7682 }
7683
7684 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7685 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7686 val_beg += stripped_after;
7687 stripped_before += stripped_after;
7688 }
7689
7690 val_end += stripped_before;
7691 next += stripped_before;
7692 hdr_end += stripped_before;
7693 hdr_next += stripped_before;
7694 cur_hdr->len += stripped_before;
7695 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7696 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7697 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7698
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7699 /* First, let's see if we want to capture this cookie. We check
7700 * that we don't already have a client side cookie, because we
7701 * can only capture one. Also as an optimisation, we ignore
7702 * cookies shorter than the declared name.
7703 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7704 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7705 (val_end - att_beg >= sess->fe->capture_namelen) &&
7706 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7707 int log_len = val_end - att_beg;
7708
7709 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7710 Alert("HTTP logging : out of memory.\n");
7711 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7712 if (log_len > sess->fe->capture_len)
7713 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7714 memcpy(txn->cli_cookie, att_beg, log_len);
7715 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7716 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7717 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7718
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7719 /* Persistence cookies in passive, rewrite or insert mode have the
7720 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7721 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7722 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7723 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7724 * For cookies in prefix mode, the form is :
7725 *
7726 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7727 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7728 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7729 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7730 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7731 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7732
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7733 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7734 * have the server ID between val_beg and delim, and the original cookie between
7735 * delim+1 and val_end. Otherwise, delim==val_end :
7736 *
7737 * Cookie: NAME=SRV; # in all but prefix modes
7738 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7739 * | || || | |+-> next
7740 * | || || | +--> val_end
7741 * | || || +---------> delim
7742 * | || |+------------> val_beg
7743 * | || +-------------> att_end = equal
7744 * | |+-----------------> att_beg
7745 * | +------------------> prev
7746 * +-------------------------> hdr_beg
7747 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7748
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7749 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7750 for (delim = val_beg; delim < val_end; delim++)
7751 if (*delim == COOKIE_DELIM)
7752 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7753 } else {
7754 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7755 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7756 /* Now check if the cookie contains a date field, which would
7757 * appear after a vertical bar ('|') just after the server name
7758 * and before the delimiter.
7759 */
7760 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7761 if (vbar1) {
7762 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7763 * right is the last seen date. It is a base64 encoded
7764 * 30-bit value representing the UNIX date since the
7765 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7766 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7767 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7768 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7769 if (val_end - vbar1 >= 5) {
7770 val = b64tos30(vbar1);
7771 if (val > 0)
7772 txn->cookie_last_date = val << 2;
7773 }
7774 /* look for a second vertical bar */
7775 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7776 if (vbar1 && (val_end - vbar1 > 5)) {
7777 val = b64tos30(vbar1 + 1);
7778 if (val > 0)
7779 txn->cookie_first_date = val << 2;
7780 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7781 }
7782 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7783
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7784 /* if the cookie has an expiration date and the proxy wants to check
7785 * it, then we do that now. We first check if the cookie is too old,
7786 * then only if it has expired. We detect strict overflow because the
7787 * time resolution here is not great (4 seconds). Cookies with dates
7788 * in the future are ignored if their offset is beyond one day. This
7789 * allows an admin to fix timezone issues without expiring everyone
7790 * and at the same time avoids keeping unwanted side effects for too
7791 * long.
7792 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7793 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7794 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7795 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7796 txn->flags &= ~TX_CK_MASK;
7797 txn->flags |= TX_CK_OLD;
7798 delim = val_beg; // let's pretend we have not found the cookie
7799 txn->cookie_first_date = 0;
7800 txn->cookie_last_date = 0;
7801 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7802 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7803 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7804 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7805 txn->flags &= ~TX_CK_MASK;
7806 txn->flags |= TX_CK_EXPIRED;
7807 delim = val_beg; // let's pretend we have not found the cookie
7808 txn->cookie_first_date = 0;
7809 txn->cookie_last_date = 0;
7810 }
7811
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7812 /* Here, we'll look for the first running server which supports the cookie.
7813 * This allows to share a same cookie between several servers, for example
7814 * to dedicate backup servers to specific servers only.
7815 * However, to prevent clients from sticking to cookie-less backup server
7816 * when they have incidentely learned an empty cookie, we simply ignore
7817 * empty cookies and mark them as invalid.
7818 * The same behaviour is applied when persistence must be ignored.
7819 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7820 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7821 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7822
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7823 while (srv) {
7824 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7825 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7826 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7827 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7828 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7829 /* we found the server and we can use it */
7830 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7831 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7832 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7833 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7834 break;
7835 } else {
7836 /* we found a server, but it's down,
7837 * mark it as such and go on in case
7838 * another one is available.
7839 */
7840 txn->flags &= ~TX_CK_MASK;
7841 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7842 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7843 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7844 srv = srv->next;
7845 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7846
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7847 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7848 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7849 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7850 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7851 txn->flags |= TX_CK_UNUSED;
7852 else
7853 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7854 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7855
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7856 /* depending on the cookie mode, we may have to either :
7857 * - delete the complete cookie if we're in insert+indirect mode, so that
7858 * the server never sees it ;
7859 * - remove the server id from the cookie value, and tag the cookie as an
7860 * application cookie so that it does not get accidentely removed later,
7861 * if we're in cookie prefix mode
7862 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7863 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7864 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7865
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7866 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7867 val_end += delta;
7868 next += delta;
7869 hdr_end += delta;
7870 hdr_next += delta;
7871 cur_hdr->len += delta;
7872 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7873
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7874 del_from = NULL;
7875 preserve_hdr = 1; /* we want to keep this cookie */
7876 }
7877 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7878 (s->be->ck_opts & (PR_CK_INS | PR_CK_IND)) == (PR_CK_INS | PR_CK_IND)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7879 del_from = prev;
7880 }
7881 } else {
7882 /* This is not our cookie, so we must preserve it. But if we already
7883 * scheduled another cookie for removal, we cannot remove the
7884 * complete header, but we can remove the previous block itself.
7885 */
7886 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7887
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7888 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7889 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7890 if (att_beg >= del_from)
7891 att_beg += delta;
7892 if (att_end >= del_from)
7893 att_end += delta;
7894 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7895 val_end += delta;
7896 next += delta;
7897 hdr_end += delta;
7898 hdr_next += delta;
7899 cur_hdr->len += delta;
7900 http_msg_move_end(&txn->req, delta);
7901 prev = del_from;
7902 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7903 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7904 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7905
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7906 /* continue with next cookie on this header line */
7907 att_beg = next;
7908 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7909
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7910 /* There are no more cookies on this line.
7911 * We may still have one (or several) marked for deletion at the
7912 * end of the line. We must do this now in two ways :
7913 * - if some cookies must be preserved, we only delete from the
7914 * mark to the end of line ;
7915 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7916 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7917 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7918 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7919 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7920 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7921 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7922 cur_hdr->len += delta;
7923 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7924 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7925
7926 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7927 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7928 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7929 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7930 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7931 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7932 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7933 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7934 }
7935
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7936 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7937 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7938 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7939}
7940
7941
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7942/* Iterate the same filter through all response headers contained in <rtr>.
7943 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7944 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7945int apply_filter_to_resp_headers(struct stream *s, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7946{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7947 char *cur_ptr, *cur_end, *cur_next;
7948 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7949 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7950 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7951 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7952
7953 last_hdr = 0;
7954
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7955 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7956 old_idx = 0;
7957
7958 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7959 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7960 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7961 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7962 (exp->action == ACT_ALLOW ||
7963 exp->action == ACT_DENY))
7964 return 0;
7965
7966 cur_idx = txn->hdr_idx.v[old_idx].next;
7967 if (!cur_idx)
7968 break;
7969
7970 cur_hdr = &txn->hdr_idx.v[cur_idx];
7971 cur_ptr = cur_next;
7972 cur_end = cur_ptr + cur_hdr->len;
7973 cur_next = cur_end + cur_hdr->cr + 1;
7974
7975 /* Now we have one header between cur_ptr and cur_end,
7976 * and the next header starts at cur_next.
7977 */
7978
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7979 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7980 switch (exp->action) {
7981 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7982 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7983 last_hdr = 1;
7984 break;
7985
7986 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7987 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7988 last_hdr = 1;
7989 break;
7990
7991 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7992 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7993 if (trash.len < 0)
7994 return -1;
7995
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7996 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7997 /* FIXME: if the user adds a newline in the replacement, the
7998 * index will not be recalculated for now, and the new line
7999 * will not be counted as a new header.
8000 */
8001
8002 cur_end += delta;
8003 cur_next += delta;
8004 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8005 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8006 break;
8007
8008 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8009 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8010 cur_next += delta;
8011
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8012 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8013 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8014 txn->hdr_idx.used--;
8015 cur_hdr->len = 0;
8016 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8017 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8018 break;
8019
8020 }
8021 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8022
8023 /* keep the link from this header to next one in case of later
8024 * removal of next header.
8025 */
8026 old_idx = cur_idx;
8027 }
8028 return 0;
8029}
8030
8031
8032/* Apply the filter to the status line in the response buffer <rtr>.
8033 * Returns 0 if nothing has been done, 1 if the filter has been applied,
8034 * or -1 if a replacement resulted in an invalid status line.
8035 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8036int apply_filter_to_sts_line(struct stream *s, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8037{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8038 char *cur_ptr, *cur_end;
8039 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8040 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8041 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8042
8043
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8044 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8045 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8046 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8047 (exp->action == ACT_ALLOW ||
8048 exp->action == ACT_DENY))
8049 return 0;
8050 else if (exp->action == ACT_REMOVE)
8051 return 0;
8052
8053 done = 0;
8054
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8055 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]8056 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8057
8058 /* Now we have the status line between cur_ptr and cur_end */
8059
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8060 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8061 switch (exp->action) {
8062 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8063 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8064 done = 1;
8065 break;
8066
8067 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8068 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8069 done = 1;
8070 break;
8071
8072 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8073 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8074 if (trash.len < 0)
8075 return -1;
8076
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8077 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8078 /* FIXME: if the user adds a newline in the replacement, the
8079 * index will not be recalculated for now, and the new line
8080 * will not be counted as a new header.
8081 */
8082
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8083 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8084 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8085 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]8086 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8087 cur_ptr, cur_end + 1,
8088 NULL, NULL);
8089 if (unlikely(!cur_end))
8090 return -1;
8091
8092 /* we have a full respnse and we know that we have either a CR
8093 * or an LF at <ptr>.
8094 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8095 txn->status = strl2ui(rtr->buf->p + txn->rsp.sl.st.c, txn->rsp.sl.st.c_l);
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]8096 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.st.l, *cur_end == '\r');
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8097 /* there is no point trying this regex on headers */
8098 return 1;
8099 }
8100 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8101 return done;
8102}
8103
8104
8105
8106/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8107 * Apply all the resp filters of proxy <px> to all headers in buffer <rtr> of stream <s>.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8108 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
8109 * unparsable response.
8110 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8111int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8112{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8113 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8114 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8115 struct hdr_exp *exp;
8116
8117 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8118 int ret;
8119
8120 /*
8121 * The interleaving of transformations and verdicts
8122 * makes it difficult to decide to continue or stop
8123 * the evaluation.
8124 */
8125
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8126 if (txn->flags & TX_SVDENY)
8127 break;
8128
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8129 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8130 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
8131 exp->action == ACT_PASS)) {
8132 exp = exp->next;
8133 continue;
8134 }
8135
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8136 /* if this filter had a condition, evaluate it now and skip to
8137 * next filter if the condition does not match.
8138 */
8139 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8140 ret = acl_exec_cond(exp->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8141 ret = acl_pass(ret);
8142 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
8143 ret = !ret;
8144 if (!ret)
8145 continue;
8146 }
8147
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8148 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8149 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8150 if (unlikely(ret < 0))
8151 return -1;
8152
8153 if (likely(ret == 0)) {
8154 /* The filter did not match the response, it can be
8155 * iterated through all headers.
8156 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8157 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
8158 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8159 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8160 }
8161 return 0;
8162}
8163
8164
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8165/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]8166 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8167 * desirable to call it only when needed. This function is also used when we
8168 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8169 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8170void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8171{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8172 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8173 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8174 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8175 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8176 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8177 char *hdr_beg, *hdr_end, *hdr_next;
8178 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8179
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8180 /* Iterate through the headers.
8181 * we start with the start line.
8182 */
8183 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8184 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8185
8186 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8187 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8188 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8189
8190 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8191 hdr_beg = hdr_next;
8192 hdr_end = hdr_beg + cur_hdr->len;
8193 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8194
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8195 /* We have one full header between hdr_beg and hdr_end, and the
8196 * next header starts at hdr_next. We're only interested in
8197 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8198 */
8199
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8200 is_cookie2 = 0;
8201 prev = hdr_beg + 10;
8202 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8203 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8204 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8205 if (!val) {
8206 old_idx = cur_idx;
8207 continue;
8208 }
8209 is_cookie2 = 1;
8210 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8211 }
8212
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8213 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8214 * <prev> points to the colon.
8215 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8216 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8217
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8218 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8219 * check-cache is enabled) and we are not interested in checking
8220 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8221 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]8222 if (s->be->cookie_name == NULL && sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8223 return;
8224
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8225 /* OK so now we know we have to process this response cookie.
8226 * The format of the Set-Cookie header is slightly different
8227 * from the format of the Cookie header in that it does not
8228 * support the comma as a cookie delimiter (thus the header
8229 * cannot be folded) because the Expires attribute described in
8230 * the original Netscape's spec may contain an unquoted date
8231 * with a comma inside. We have to live with this because
8232 * many browsers don't support Max-Age and some browsers don't
8233 * support quoted strings. However the Set-Cookie2 header is
8234 * clean.
8235 *
8236 * We have to keep multiple pointers in order to support cookie
8237 * removal at the beginning, middle or end of header without
8238 * corrupting the header (in case of set-cookie2). A special
8239 * pointer, <scav> points to the beginning of the set-cookie-av
8240 * fields after the first semi-colon. The <next> pointer points
8241 * either to the end of line (set-cookie) or next unquoted comma
8242 * (set-cookie2). All of these headers are valid :
8243 *
8244 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8245 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8246 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8247 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8248 * | | | | | | | | | |
8249 * | | | | | | | | +-> next hdr_end <--+
8250 * | | | | | | | +------------> scav
8251 * | | | | | | +--------------> val_end
8252 * | | | | | +--------------------> val_beg
8253 * | | | | +----------------------> equal
8254 * | | | +------------------------> att_end
8255 * | | +----------------------------> att_beg
8256 * | +------------------------------> prev
8257 * +-----------------------------------------> hdr_beg
8258 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8259
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8260 for (; prev < hdr_end; prev = next) {
8261 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8262
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8263 /* find att_beg */
8264 att_beg = prev + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8265 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8266 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8267
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8268 /* find att_end : this is the first character after the last non
8269 * space before the equal. It may be equal to hdr_end.
8270 */
8271 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8272
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8273 while (equal < hdr_end) {
8274 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8275 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8276 if (HTTP_IS_SPHT(*equal++))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8277 continue;
8278 att_end = equal;
8279 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8280
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8281 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8282 * is between <att_beg> and <equal>, both may be identical.
8283 */
8284
8285 /* look for end of cookie if there is an equal sign */
8286 if (equal < hdr_end && *equal == '=') {
8287 /* look for the beginning of the value */
8288 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8289 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8290 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8291
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8292 /* find the end of the value, respecting quotes */
8293 next = find_cookie_value_end(val_beg, hdr_end);
8294
8295 /* make val_end point to the first white space or delimitor after the value */
8296 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8297 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8298 val_end--;
8299 } else {
8300 /* <equal> points to next comma, semi-colon or EOL */
8301 val_beg = val_end = next = equal;
8302 }
8303
8304 if (next < hdr_end) {
8305 /* Set-Cookie2 supports multiple cookies, and <next> points to
8306 * a colon or semi-colon before the end. So skip all attr-value
8307 * pairs and look for the next comma. For Set-Cookie, since
8308 * commas are permitted in values, skip to the end.
8309 */
8310 if (is_cookie2)
8311 next = find_hdr_value_end(next, hdr_end);
8312 else
8313 next = hdr_end;
8314 }
8315
8316 /* Now everything is as on the diagram above */
8317
8318 /* Ignore cookies with no equal sign */
8319 if (equal == val_end)
8320 continue;
8321
8322 /* If there are spaces around the equal sign, we need to
8323 * strip them otherwise we'll get trouble for cookie captures,
8324 * or even for rewrites. Since this happens extremely rarely,
8325 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8326 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8327 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8328 int stripped_before = 0;
8329 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8330
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8331 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8332 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8333 equal += stripped_before;
8334 val_beg += stripped_before;
8335 }
8336
8337 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8338 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8339 val_beg += stripped_after;
8340 stripped_before += stripped_after;
8341 }
8342
8343 val_end += stripped_before;
8344 next += stripped_before;
8345 hdr_end += stripped_before;
8346 hdr_next += stripped_before;
8347 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8348 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8349 }
8350
8351 /* First, let's see if we want to capture this cookie. We check
8352 * that we don't already have a server side cookie, because we
8353 * can only capture one. Also as an optimisation, we ignore
8354 * cookies shorter than the declared name.
8355 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8356 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8357 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8358 (val_end - att_beg >= sess->fe->capture_namelen) &&
8359 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8360 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8361 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8362 Alert("HTTP logging : out of memory.\n");
8363 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8364 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8365 if (log_len > sess->fe->capture_len)
8366 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8367 memcpy(txn->srv_cookie, att_beg, log_len);
8368 txn->srv_cookie[log_len] = 0;
8369 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8370 }
8371
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8372 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8373 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8374 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8375 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8376 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8377 /* assume passive cookie by default */
8378 txn->flags &= ~TX_SCK_MASK;
8379 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8380
8381 /* If the cookie is in insert mode on a known server, we'll delete
8382 * this occurrence because we'll insert another one later.
8383 * We'll delete it too if the "indirect" option is set and we're in
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8384 * a direct access.
8385 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8386 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8387 /* The "preserve" flag was set, we don't want to touch the
8388 * server's cookie.
8389 */
8390 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8391 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8392 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8393 /* this cookie must be deleted */
8394 if (*prev == ':' && next == hdr_end) {
8395 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8396 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8397 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8398 txn->hdr_idx.used--;
8399 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8400 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8401 hdr_next += delta;
8402 http_msg_move_end(&txn->rsp, delta);
8403 /* note: while both invalid now, <next> and <hdr_end>
8404 * are still equal, so the for() will stop as expected.
8405 */
8406 } else {
8407 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8408 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8409 next = prev;
8410 hdr_end += delta;
8411 hdr_next += delta;
8412 cur_hdr->len += delta;
8413 http_msg_move_end(&txn->rsp, delta);
8414 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8415 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8416 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8417 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8418 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8419 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8420 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8421 * with this server since we know it.
8422 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8423 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8424 next += delta;
8425 hdr_end += delta;
8426 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8427 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8428 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8429
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8430 txn->flags &= ~TX_SCK_MASK;
8431 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8432 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8433 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8434 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8435 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8436 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8437 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8438 next += delta;
8439 hdr_end += delta;
8440 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8441 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8442 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8443
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8444 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8445 txn->flags &= ~TX_SCK_MASK;
8446 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8447 }
8448 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8449 /* that's done for this cookie, check the next one on the same
8450 * line when next != hdr_end (only if is_cookie2).
8451 */
8452 }
8453 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8454 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8455 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8456}
8457
8458
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8459/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8460 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8461 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8462void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8463{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8464 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8465 char *p1, *p2;
8466
8467 char *cur_ptr, *cur_end, *cur_next;
8468 int cur_idx;
8469
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8470 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8471 return;
8472
8473 /* Iterate through the headers.
8474 * we start with the start line.
8475 */
8476 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8477 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8478
8479 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8480 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8481 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8482
8483 cur_hdr = &txn->hdr_idx.v[cur_idx];
8484 cur_ptr = cur_next;
8485 cur_end = cur_ptr + cur_hdr->len;
8486 cur_next = cur_end + cur_hdr->cr + 1;
8487
8488 /* We have one full header between cur_ptr and cur_end, and the
8489 * next header starts at cur_next. We're only interested in
8490 * "Cookie:" headers.
8491 */
8492
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8493 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8494 if (val) {
8495 if ((cur_end - (cur_ptr + val) >= 8) &&
8496 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8497 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8498 return;
8499 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8500 }
8501
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8502 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8503 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8504 continue;
8505
8506 /* OK, right now we know we have a cache-control header at cur_ptr */
8507
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8508 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8509
8510 if (p1 >= cur_end) /* no more info */
8511 continue;
8512
8513 /* p1 is at the beginning of the value */
8514 p2 = p1;
8515
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8516 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8517 p2++;
8518
8519 /* we have a complete value between p1 and p2 */
8520 if (p2 < cur_end && *p2 == '=') {
8521 /* we have something of the form no-cache="set-cookie" */
8522 if ((cur_end - p1 >= 21) &&
8523 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8524 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8525 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8526 continue;
8527 }
8528
8529 /* OK, so we know that either p2 points to the end of string or to a comma */
8530 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8531 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8532 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8533 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8534 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8535 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8536 return;
8537 }
8538
8539 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8540 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8541 continue;
8542 }
8543 }
8544}
8545
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8546
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8547/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8548 * In a GET, HEAD or POST request, check if the requested URI matches the stats uri
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8549 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8550 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8551 * It is assumed that the request is either a HEAD, GET, or POST and that the
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8552 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8553 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8554 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8555 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8556int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8557{
8558 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8559 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8560 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8561
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8562 if (!uri_auth)
8563 return 0;
8564
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8565 if (txn->meth != HTTP_METH_GET && txn->meth != HTTP_METH_HEAD && txn->meth != HTTP_METH_POST)
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8566 return 0;
8567
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8568 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8569 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8570 return 0;
8571
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8572 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8573 return 0;
8574
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8575 return 1;
8576}
8577
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8578/*
8579 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8580 * By default it tries to report the error position as msg->err_pos. However if
8581 * this one is not set, it will then report msg->next, which is the last known
8582 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8583 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8584 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8585void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8586 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8587 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8588{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8589 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8590 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8591 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8592
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8593 es->len = MIN(chn->buf->i, global.tune.bufsize);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8594 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8595 len1 = MIN(len1, es->len);
8596 len2 = es->len - len1; /* remaining data if buffer wraps */
8597
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8598 if (!es->buf)
8599 es->buf = malloc(global.tune.bufsize);
8600
8601 if (es->buf) {
8602 memcpy(es->buf, chn->buf->p, len1);
8603 if (len2)
8604 memcpy(es->buf + len1, chn->buf->data, len2);
8605 }
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8606
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8607 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8608 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8609 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8610 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8611
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8612 es->when = date; // user-visible date
8613 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8614 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8615 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8616 if (objt_conn(sess->origin))
8617 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8618 else
8619 memset(&es->src, 0, sizeof(es->src));
8620
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8621 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8622 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8623 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8624 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8625 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8626 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8627 es->b_out = chn->buf->o;
8628 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8629 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8630 es->m_clen = msg->chunk_len;
8631 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8632}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8633
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8634/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8635 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8636 * performed over the whole headers. Otherwise it must contain a valid header
8637 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8638 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8639 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8640 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8641 * -1. The value fetch stops at commas, so this function is suited for use with
8642 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8643 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8644 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8645unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8646 struct hdr_idx *idx, int occ,
8647 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8648{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8649 struct hdr_ctx local_ctx;
8650 char *ptr_hist[MAX_HDR_HISTORY];
8651 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8652 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8653 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8654
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8655 if (!ctx) {
8656 local_ctx.idx = 0;
8657 ctx = &local_ctx;
8658 }
8659
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8660 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8661 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8662 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8663 occ--;
8664 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8665 *vptr = ctx->line + ctx->val;
8666 *vlen = ctx->vlen;
8667 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8668 }
8669 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8670 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8671 }
8672
8673 /* negative occurrence, we scan all the list then walk back */
8674 if (-occ > MAX_HDR_HISTORY)
8675 return 0;
8676
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8677 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8678 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8679 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8680 len_hist[hist_ptr] = ctx->vlen;
8681 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8682 hist_ptr = 0;
8683 found++;
8684 }
8685 if (-occ > found)
8686 return 0;
8687 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8688 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8689 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8690 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8691 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8692 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8693 if (hist_ptr >= MAX_HDR_HISTORY)
8694 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8695 *vptr = ptr_hist[hist_ptr];
8696 *vlen = len_hist[hist_ptr];
8697 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8698}
8699
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8700/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8701 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8702 * performed over the whole headers. Otherwise it must contain a valid header
8703 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8704 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8705 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8706 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8707 * -1. This function differs from http_get_hdr() in that it only returns full
8708 * line header values and does not stop at commas.
8709 * The return value is 0 if nothing was found, or non-zero otherwise.
8710 */
8711unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8712 struct hdr_idx *idx, int occ,
8713 struct hdr_ctx *ctx, char **vptr, int *vlen)
8714{
8715 struct hdr_ctx local_ctx;
8716 char *ptr_hist[MAX_HDR_HISTORY];
8717 int len_hist[MAX_HDR_HISTORY];
8718 unsigned int hist_ptr;
8719 int found;
8720
8721 if (!ctx) {
8722 local_ctx.idx = 0;
8723 ctx = &local_ctx;
8724 }
8725
8726 if (occ >= 0) {
8727 /* search from the beginning */
8728 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8729 occ--;
8730 if (occ <= 0) {
8731 *vptr = ctx->line + ctx->val;
8732 *vlen = ctx->vlen;
8733 return 1;
8734 }
8735 }
8736 return 0;
8737 }
8738
8739 /* negative occurrence, we scan all the list then walk back */
8740 if (-occ > MAX_HDR_HISTORY)
8741 return 0;
8742
8743 found = hist_ptr = 0;
8744 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8745 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8746 len_hist[hist_ptr] = ctx->vlen;
8747 if (++hist_ptr >= MAX_HDR_HISTORY)
8748 hist_ptr = 0;
8749 found++;
8750 }
8751 if (-occ > found)
8752 return 0;
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8753
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8754 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8755 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8756 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8757 * to remain in the 0..9 range.
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8758 */
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8759 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8760 if (hist_ptr >= MAX_HDR_HISTORY)
8761 hist_ptr -= MAX_HDR_HISTORY;
8762 *vptr = ptr_hist[hist_ptr];
8763 *vlen = len_hist[hist_ptr];
8764 return 1;
8765}
8766
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8767/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8768 * Print a debug line with a header. Always stop at the first CR or LF char,
8769 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8770 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8771 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8772void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8773{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8774 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8775 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8776
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8777 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8778 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8779 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8780 objt_conn(s->si[1].end) ? (unsigned short)objt_conn(s->si[1].end)->t.sock.fd : -1);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8781
8782 for (max = 0; start + max < end; max++)
8783 if (start[max] == '\r' || start[max] == '\n')
8784 break;
8785
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8786 UBOUND(max, trash.size - trash.len - 3);
8787 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8788 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8789 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8790}
8791
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8792
8793/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8794 * The hdr_idx is allocated as well. In case of allocation failure, everything
8795 * allocated is freed and NULL is returned. Otherwise the new transaction is
8796 * assigned to the stream and returned.
8797 */
8798struct http_txn *http_alloc_txn(struct stream *s)
8799{
8800 struct http_txn *txn = s->txn;
8801
8802 if (txn)
8803 return txn;
8804
8805 txn = pool_alloc2(pool2_http_txn);
8806 if (!txn)
8807 return txn;
8808
8809 txn->hdr_idx.size = global.tune.max_http_hdr;
8810 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8811 if (!txn->hdr_idx.v) {
8812 pool_free2(pool2_http_txn, txn);
8813 return NULL;
8814 }
8815
8816 s->txn = txn;
8817 return txn;
8818}
8819
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8820void http_txn_reset_req(struct http_txn *txn)
8821{
8822 txn->req.flags = 0;
8823 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
8824 txn->req.next = 0;
8825 txn->req.chunk_len = 0LL;
8826 txn->req.body_len = 0LL;
8827 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8828}
8829
8830void http_txn_reset_res(struct http_txn *txn)
8831{
8832 txn->rsp.flags = 0;
8833 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
8834 txn->rsp.next = 0;
8835 txn->rsp.chunk_len = 0LL;
8836 txn->rsp.body_len = 0LL;
8837 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
8838}
8839
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8840/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8841 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8842 * the required fields are properly allocated and that we only need to (re)init
8843 * them. This should be used before processing any new request.
8844 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8845void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8846{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8847 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8848 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8849
8850 txn->flags = 0;
8851 txn->status = -1;
8852
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8853 txn->cookie_first_date = 0;
8854 txn->cookie_last_date = 0;
8855
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8856 txn->srv_cookie = NULL;
8857 txn->cli_cookie = NULL;
8858 txn->uri = NULL;
8859
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8860 http_txn_reset_req(txn);
8861 http_txn_reset_res(txn);
8862
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8863 txn->req.chn = &s->req;
8864 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8865
8866 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8867
8868 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8869 if (fe->options2 & PR_O2_REQBUG_OK)
8870 txn->req.err_pos = -1; /* let buggy requests pass */
8871
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8872 if (txn->hdr_idx.v)
8873 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]8874
8875 vars_init(&s->vars_txn, SCOPE_TXN);
8876 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8877}
8878
8879/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8880void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8881{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8882 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8883 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8884
8885 /* these ones will have been dynamically allocated */
8886 pool_free2(pool2_requri, txn->uri);
8887 pool_free2(pool2_capture, txn->cli_cookie);
8888 pool_free2(pool2_capture, txn->srv_cookie);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8889 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8890
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8891 s->unique_id = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8892 txn->uri = NULL;
8893 txn->srv_cookie = NULL;
8894 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8895
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8896 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8897 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8898 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8899 pool_free2(h->pool, s->req_cap[h->index]);
8900 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8901 }
8902
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8903 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8904 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8905 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8906 pool_free2(h->pool, s->res_cap[h->index]);
8907 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8908 }
8909
Willy Tarreau6204cd92016-03-10 16:33:04 +0100[diff] [blame]8910 vars_prune(&s->vars_txn, s->sess, s);
8911 vars_prune(&s->vars_reqres, s->sess, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8912}
8913
8914/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8915void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8916{
8917 http_end_txn(s);
8918 http_init_txn(s);
8919
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]8920 /* reinitialise the current rule list pointer to NULL. We are sure that
8921 * any rulelist match the NULL pointer.
8922 */
8923 s->current_rule_list = NULL;
8924
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8925 s->be = strm_fe(s);
8926 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8927 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8928 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8929 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8930 /* re-init store persistence */
8931 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8932 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8933
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8934 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8935
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8936 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8937
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8938 /* We must trim any excess data from the response buffer, because we
8939 * may have blocked an invalid response from a server that we don't
8940 * want to accidentely forward once we disable the analysers, nor do
8941 * we want those data to come along with next response. A typical
8942 * example of such data would be from a buggy server responding to
8943 * a HEAD with some data, or sending more than the advertised
8944 * content-length.
8945 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8946 if (unlikely(s->res.buf->i))
8947 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8948
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8949 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8950 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8951
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8952 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8953 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8954
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8955 s->req.rex = TICK_ETERNITY;
8956 s->req.wex = TICK_ETERNITY;
8957 s->req.analyse_exp = TICK_ETERNITY;
8958 s->res.rex = TICK_ETERNITY;
8959 s->res.wex = TICK_ETERNITY;
8960 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8961}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8962
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8963void free_http_res_rules(struct list *r)
8964{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8965 struct act_rule *tr, *pr;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8966
8967 list_for_each_entry_safe(pr, tr, r, list) {
8968 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8969 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8970 free(pr);
8971 }
8972}
8973
8974void free_http_req_rules(struct list *r)
8975{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8976 struct act_rule *tr, *pr;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8977
8978 list_for_each_entry_safe(pr, tr, r, list) {
8979 LIST_DEL(&pr->list);
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8980 if (pr->action == ACT_HTTP_REQ_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8981 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8982
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8983 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8984 free(pr);
8985 }
8986}
8987
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8988/* parse an "http-request" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8989struct act_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8990{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8991 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]8992 struct action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8993 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8994 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8995
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]8996 rule = calloc(1, sizeof(*rule));
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8997 if (!rule) {
8998 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8999 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9000 }
9001
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9002 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9003 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9004 rule->action = ACT_ACTION_ALLOW;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9005 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]9006 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9007 int code;
9008 int hc;
9009
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9010 rule->action = ACT_ACTION_DENY;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9011 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9012 if (strcmp(args[cur_arg], "deny_status") == 0) {
9013 cur_arg++;
9014 if (!args[cur_arg]) {
9015 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
9016 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9017 goto out_err;
9018 }
9019
9020 code = atol(args[cur_arg]);
9021 cur_arg++;
9022 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
9023 if (http_err_codes[hc] == code) {
9024 rule->deny_status = hc;
9025 break;
9026 }
9027 }
9028
9029 if (hc >= HTTP_ERR_SIZE) {
9030 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
9031 file, linenum, code);
9032 }
9033 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]9034 } else if (!strcmp(args[0], "tarpit")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9035 rule->action = ACT_HTTP_REQ_TARPIT;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]9036 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9037 } else if (!strcmp(args[0], "auth")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9038 rule->action = ACT_HTTP_REQ_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9039 cur_arg = 1;
9040
9041 while(*args[cur_arg]) {
9042 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9043 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9044 cur_arg+=2;
9045 continue;
9046 } else
9047 break;
9048 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9049 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9050 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9051 cur_arg = 1;
9052
9053 if (!*args[cur_arg] ||
9054 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9055 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
9056 file, linenum, args[0]);
9057 goto out_err;
9058 }
9059 rule->arg.nice = atoi(args[cur_arg]);
9060 if (rule->arg.nice < -1024)
9061 rule->arg.nice = -1024;
9062 else if (rule->arg.nice > 1024)
9063 rule->arg.nice = 1024;
9064 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9065 } else if (!strcmp(args[0], "set-tos")) {
9066#ifdef IP_TOS
9067 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9068 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9069 cur_arg = 1;
9070
9071 if (!*args[cur_arg] ||
9072 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9073 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9074 file, linenum, args[0]);
9075 goto out_err;
9076 }
9077
9078 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9079 if (err && *err != '\0') {
9080 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9081 file, linenum, err, args[0]);
9082 goto out_err;
9083 }
9084 cur_arg++;
9085#else
9086 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9087 goto out_err;
9088#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9089 } else if (!strcmp(args[0], "set-mark")) {
9090#ifdef SO_MARK
9091 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9092 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9093 cur_arg = 1;
9094
9095 if (!*args[cur_arg] ||
9096 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9097 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9098 file, linenum, args[0]);
9099 goto out_err;
9100 }
9101
9102 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9103 if (err && *err != '\0') {
9104 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9105 file, linenum, err, args[0]);
9106 goto out_err;
9107 }
9108 cur_arg++;
9109 global.last_checks |= LSTCHK_NETADM;
9110#else
9111 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9112 goto out_err;
9113#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9114 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9115 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9116 cur_arg = 1;
9117
9118 if (!*args[cur_arg] ||
9119 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9120 bad_log_level:
9121 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
9122 file, linenum, args[0]);
9123 goto out_err;
9124 }
9125 if (strcmp(args[cur_arg], "silent") == 0)
9126 rule->arg.loglevel = -1;
9127 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
9128 goto bad_log_level;
9129 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9130 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9131 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9132 cur_arg = 1;
9133
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]9134 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9135 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9136 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9137 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9138 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9139 }
9140
9141 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9142 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9143 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]9144
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9145 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9146 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9147 if (!parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9148 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9149 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9150 file, linenum, args[0], error);
9151 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9152 goto out_err;
9153 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9154 free(proxy->conf.lfs_file);
9155 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9156 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9157 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9158 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9159 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9160 cur_arg = 1;
9161
9162 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]9163 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9164 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9165 file, linenum, args[0]);
9166 goto out_err;
9167 }
9168
9169 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9170 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9171 LIST_INIT(&rule->arg.hdr_add.fmt);
9172
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9173 error = NULL;
9174 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9175 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9176 args[cur_arg + 1], error);
9177 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9178 goto out_err;
9179 }
9180
9181 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9182 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9183 if (!parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9184 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9185 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9186 file, linenum, args[0], error);
9187 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9188 goto out_err;
9189 }
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9190
9191 free(proxy->conf.lfs_file);
9192 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9193 proxy->conf.lfs_line = proxy->conf.args.line;
9194 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9195 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9196 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9197 cur_arg = 1;
9198
9199 if (!*args[cur_arg] ||
9200 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9201 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9202 file, linenum, args[0]);
9203 goto out_err;
9204 }
9205
9206 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9207 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9208
9209 proxy->conf.args.ctx = ARGC_HRQ;
9210 free(proxy->conf.lfs_file);
9211 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9212 proxy->conf.lfs_line = proxy->conf.args.line;
9213 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9214 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9215 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9216 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9217 struct sample_expr *expr;
9218 unsigned int where;
9219 char *err = NULL;
9220
9221 cur_arg = 1;
9222 proxy->conf.args.ctx = ARGC_TRK;
9223
9224 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9225 if (!expr) {
9226 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9227 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9228 free(err);
9229 goto out_err;
9230 }
9231
9232 where = 0;
9233 if (proxy->cap & PR_CAP_FE)
9234 where |= SMP_VAL_FE_HRQ_HDR;
9235 if (proxy->cap & PR_CAP_BE)
9236 where |= SMP_VAL_BE_HRQ_HDR;
9237
9238 if (!(expr->fetch->val & where)) {
9239 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9240 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9241 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9242 args[cur_arg-1], sample_src_names(expr->fetch->use));
9243 free(expr);
9244 goto out_err;
9245 }
9246
9247 if (strcmp(args[cur_arg], "table") == 0) {
9248 cur_arg++;
9249 if (!args[cur_arg]) {
9250 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9251 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9252 free(expr);
9253 goto out_err;
9254 }
9255 /* we copy the table name for now, it will be resolved later */
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9256 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9257 cur_arg++;
9258 }
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9259 rule->arg.trk_ctr.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9260 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9261 } else if (strcmp(args[0], "redirect") == 0) {
9262 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9263 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9264
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9265 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 0)) == NULL) {
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9266 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9267 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9268 goto out_err;
9269 }
9270
9271 /* this redirect rule might already contain a parsed condition which
9272 * we'll pass to the http-request rule.
9273 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9274 rule->action = ACT_HTTP_REDIR;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9275 rule->arg.redir = redir;
9276 rule->cond = redir->cond;
9277 redir->cond = NULL;
9278 cur_arg = 2;
9279 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9280 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9281 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9282 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9283 /*
9284 * '+ 8' for 'add-acl('
9285 * '- 9' for 'add-acl(' + trailing ')'
9286 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9287 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9288
9289 cur_arg = 1;
9290
9291 if (!*args[cur_arg] ||
9292 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9293 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9294 file, linenum, args[0]);
9295 goto out_err;
9296 }
9297
9298 LIST_INIT(&rule->arg.map.key);
9299 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9300 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9301 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9302 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9303 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9304 file, linenum, args[0], error);
9305 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9306 goto out_err;
9307 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9308 free(proxy->conf.lfs_file);
9309 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9310 proxy->conf.lfs_line = proxy->conf.args.line;
9311 cur_arg += 1;
9312 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9313 /* http-request del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9314 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9315 /*
9316 * '+ 8' for 'del-acl('
9317 * '- 9' for 'del-acl(' + trailing ')'
9318 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9319 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9320
9321 cur_arg = 1;
9322
9323 if (!*args[cur_arg] ||
9324 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9325 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9326 file, linenum, args[0]);
9327 goto out_err;
9328 }
9329
9330 LIST_INIT(&rule->arg.map.key);
9331 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9332 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9333 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9334 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9335 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9336 file, linenum, args[0], error);
9337 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9338 goto out_err;
9339 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9340 free(proxy->conf.lfs_file);
9341 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9342 proxy->conf.lfs_line = proxy->conf.args.line;
9343 cur_arg += 1;
9344 } else if (strncmp(args[0], "del-map", 7) == 0) {
9345 /* http-request del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9346 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9347 /*
9348 * '+ 8' for 'del-map('
9349 * '- 9' for 'del-map(' + trailing ')'
9350 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9351 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9352
9353 cur_arg = 1;
9354
9355 if (!*args[cur_arg] ||
9356 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9357 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9358 file, linenum, args[0]);
9359 goto out_err;
9360 }
9361
9362 LIST_INIT(&rule->arg.map.key);
9363 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9364 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9365 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9366 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9367 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9368 file, linenum, args[0], error);
9369 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9370 goto out_err;
9371 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9372 free(proxy->conf.lfs_file);
9373 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9374 proxy->conf.lfs_line = proxy->conf.args.line;
9375 cur_arg += 1;
9376 } else if (strncmp(args[0], "set-map", 7) == 0) {
9377 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9378 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9379 /*
9380 * '+ 8' for 'set-map('
9381 * '- 9' for 'set-map(' + trailing ')'
9382 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9383 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9384
9385 cur_arg = 1;
9386
9387 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9388 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9389 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9390 file, linenum, args[0]);
9391 goto out_err;
9392 }
9393
9394 LIST_INIT(&rule->arg.map.key);
9395 LIST_INIT(&rule->arg.map.value);
9396 proxy->conf.args.ctx = ARGC_HRQ;
9397
9398 /* key pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9399 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9400 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9401 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9402 Alert("parsing [%s:%d]: 'http-request %s' key: %s.\n",
9403 file, linenum, args[0], error);
9404 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9405 goto out_err;
9406 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9407
9408 /* value pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9409 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9410 if (!parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9411 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9412 Alert("parsing [%s:%d]: 'http-request %s' pattern: %s.\n",
9413 file, linenum, args[0], error);
9414 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9415 goto out_err;
9416 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9417 free(proxy->conf.lfs_file);
9418 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9419 proxy->conf.lfs_line = proxy->conf.args.line;
9420
9421 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9422 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9423 char *errmsg = NULL;
9424 cur_arg = 1;
9425 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9426 rule->from = ACT_F_HTTP_REQ;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9427 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9428 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9429 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9430 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9431 free(errmsg);
9432 goto out_err;
9433 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9434 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9435 action_build_list(&http_req_keywords.list, &trash);
9436 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', "
9437 "'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9438 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', 'track-sc*'"
William Lallemand2e785f22016-05-25 01:48:42 +0200[diff] [blame]9439 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9440 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9441 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9442 }
9443
9444 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9445 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9446 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9447
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9448 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9449 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9450 file, linenum, args[0], errmsg);
9451 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9452 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9453 }
9454 rule->cond = cond;
9455 }
9456 else if (*args[cur_arg]) {
9457 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9458 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9459 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9460 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9461 }
9462
9463 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9464 out_err:
9465 free(rule);
9466 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9467}
9468
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9469/* parse an "http-respose" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9470struct act_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9471{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9472 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]9473 struct action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9474 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9475 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9476
9477 rule = calloc(1, sizeof(*rule));
9478 if (!rule) {
9479 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9480 goto out_err;
9481 }
9482
9483 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9484 rule->action = ACT_ACTION_ALLOW;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9485 cur_arg = 1;
9486 } else if (!strcmp(args[0], "deny")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9487 rule->action = ACT_ACTION_DENY;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9488 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9489 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9490 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9491 cur_arg = 1;
9492
9493 if (!*args[cur_arg] ||
9494 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9495 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9496 file, linenum, args[0]);
9497 goto out_err;
9498 }
9499 rule->arg.nice = atoi(args[cur_arg]);
9500 if (rule->arg.nice < -1024)
9501 rule->arg.nice = -1024;
9502 else if (rule->arg.nice > 1024)
9503 rule->arg.nice = 1024;
9504 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9505 } else if (!strcmp(args[0], "set-tos")) {
9506#ifdef IP_TOS
9507 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9508 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9509 cur_arg = 1;
9510
9511 if (!*args[cur_arg] ||
9512 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9513 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9514 file, linenum, args[0]);
9515 goto out_err;
9516 }
9517
9518 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9519 if (err && *err != '\0') {
9520 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9521 file, linenum, err, args[0]);
9522 goto out_err;
9523 }
9524 cur_arg++;
9525#else
9526 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9527 goto out_err;
9528#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9529 } else if (!strcmp(args[0], "set-mark")) {
9530#ifdef SO_MARK
9531 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9532 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9533 cur_arg = 1;
9534
9535 if (!*args[cur_arg] ||
9536 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9537 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9538 file, linenum, args[0]);
9539 goto out_err;
9540 }
9541
9542 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9543 if (err && *err != '\0') {
9544 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9545 file, linenum, err, args[0]);
9546 goto out_err;
9547 }
9548 cur_arg++;
9549 global.last_checks |= LSTCHK_NETADM;
9550#else
9551 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9552 goto out_err;
9553#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9554 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9555 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9556 cur_arg = 1;
9557
9558 if (!*args[cur_arg] ||
9559 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9560 bad_log_level:
9561 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9562 file, linenum, args[0]);
9563 goto out_err;
9564 }
9565 if (strcmp(args[cur_arg], "silent") == 0)
9566 rule->arg.loglevel = -1;
Ruoshan Huangdd016782016-06-15 22:16:03 +0800[diff] [blame]9567 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9568 goto bad_log_level;
9569 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9570 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9571 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9572 cur_arg = 1;
9573
9574 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9575 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9576 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9577 file, linenum, args[0]);
9578 goto out_err;
9579 }
9580
9581 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9582 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9583 LIST_INIT(&rule->arg.hdr_add.fmt);
9584
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9585 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9586 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9587 if (!parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9588 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9589 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9590 file, linenum, args[0], error);
9591 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9592 goto out_err;
9593 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9594 free(proxy->conf.lfs_file);
9595 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9596 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9597 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9598 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9599 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9600 cur_arg = 1;
9601
9602 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9603 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9604 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9605 file, linenum, args[0]);
9606 goto out_err;
9607 }
9608
9609 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9610 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9611 LIST_INIT(&rule->arg.hdr_add.fmt);
9612
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9613 error = NULL;
9614 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9615 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9616 args[cur_arg + 1], error);
9617 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9618 goto out_err;
9619 }
9620
9621 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9622 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9623 if (!parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9624 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9625 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9626 file, linenum, args[0], error);
9627 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9628 goto out_err;
9629 }
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9630
9631 free(proxy->conf.lfs_file);
9632 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9633 proxy->conf.lfs_line = proxy->conf.args.line;
9634 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9635 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9636 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9637 cur_arg = 1;
9638
9639 if (!*args[cur_arg] ||
9640 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9641 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9642 file, linenum, args[0]);
9643 goto out_err;
9644 }
9645
9646 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9647 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9648
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9649 proxy->conf.args.ctx = ARGC_HRS;
9650 free(proxy->conf.lfs_file);
9651 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9652 proxy->conf.lfs_line = proxy->conf.args.line;
9653 cur_arg += 1;
9654 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9655 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9656 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9657 /*
9658 * '+ 8' for 'add-acl('
9659 * '- 9' for 'add-acl(' + trailing ')'
9660 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9661 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9662
9663 cur_arg = 1;
9664
9665 if (!*args[cur_arg] ||
9666 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9667 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9668 file, linenum, args[0]);
9669 goto out_err;
9670 }
9671
9672 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9673 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9674 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9675 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9676 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9677 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9678 file, linenum, args[0], error);
9679 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9680 goto out_err;
9681 }
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9682 free(proxy->conf.lfs_file);
9683 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9684 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9685
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9686 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9687 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9688 /* http-response del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9689 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9690 /*
9691 * '+ 8' for 'del-acl('
9692 * '- 9' for 'del-acl(' + trailing ')'
9693 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9694 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9695
9696 cur_arg = 1;
9697
9698 if (!*args[cur_arg] ||
9699 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9700 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9701 file, linenum, args[0]);
9702 goto out_err;
9703 }
9704
9705 LIST_INIT(&rule->arg.map.key);
9706 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9707 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9708 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9709 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9710 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9711 file, linenum, args[0], error);
9712 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9713 goto out_err;
9714 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9715 free(proxy->conf.lfs_file);
9716 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9717 proxy->conf.lfs_line = proxy->conf.args.line;
9718 cur_arg += 1;
9719 } else if (strncmp(args[0], "del-map", 7) == 0) {
9720 /* http-response del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9721 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9722 /*
9723 * '+ 8' for 'del-map('
9724 * '- 9' for 'del-map(' + trailing ')'
9725 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9726 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9727
9728 cur_arg = 1;
9729
9730 if (!*args[cur_arg] ||
9731 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9732 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9733 file, linenum, args[0]);
9734 goto out_err;
9735 }
9736
9737 LIST_INIT(&rule->arg.map.key);
9738 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9739 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9740 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9741 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9742 Alert("parsing [%s:%d]: 'http-response %s' %s.\n",
9743 file, linenum, args[0], error);
9744 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9745 goto out_err;
9746 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9747 free(proxy->conf.lfs_file);
9748 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9749 proxy->conf.lfs_line = proxy->conf.args.line;
9750 cur_arg += 1;
9751 } else if (strncmp(args[0], "set-map", 7) == 0) {
9752 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9753 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9754 /*
9755 * '+ 8' for 'set-map('
9756 * '- 9' for 'set-map(' + trailing ')'
9757 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9758 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9759
9760 cur_arg = 1;
9761
9762 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9763 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9764 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9765 file, linenum, args[0]);
9766 goto out_err;
9767 }
9768
9769 LIST_INIT(&rule->arg.map.key);
9770 LIST_INIT(&rule->arg.map.value);
9771
9772 proxy->conf.args.ctx = ARGC_HRS;
9773
9774 /* key pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9775 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9776 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9777 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9778 Alert("parsing [%s:%d]: 'http-response %s' name: %s.\n",
9779 file, linenum, args[0], error);
9780 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9781 goto out_err;
9782 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9783
9784 /* value pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9785 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9786 if (!parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9787 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9788 Alert("parsing [%s:%d]: 'http-response %s' value: %s.\n",
9789 file, linenum, args[0], error);
9790 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9791 goto out_err;
9792 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9793
9794 free(proxy->conf.lfs_file);
9795 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9796 proxy->conf.lfs_line = proxy->conf.args.line;
9797
9798 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9799 } else if (strcmp(args[0], "redirect") == 0) {
9800 struct redirect_rule *redir;
9801 char *errmsg = NULL;
9802
9803 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9804 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9805 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9806 goto out_err;
9807 }
9808
9809 /* this redirect rule might already contain a parsed condition which
9810 * we'll pass to the http-request rule.
9811 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9812 rule->action = ACT_HTTP_REDIR;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9813 rule->arg.redir = redir;
9814 rule->cond = redir->cond;
9815 redir->cond = NULL;
9816 cur_arg = 2;
9817 return rule;
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9818 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9819 args[0][9] == '\0' && args[0][8] >= '0' &&
9820 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
9821 struct sample_expr *expr;
9822 unsigned int where;
9823 char *err = NULL;
9824
9825 cur_arg = 1;
9826 proxy->conf.args.ctx = ARGC_TRK;
9827
9828 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9829 if (!expr) {
9830 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9831 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9832 free(err);
9833 goto out_err;
9834 }
9835
9836 where = 0;
9837 if (proxy->cap & PR_CAP_FE)
9838 where |= SMP_VAL_FE_HRS_HDR;
9839 if (proxy->cap & PR_CAP_BE)
9840 where |= SMP_VAL_BE_HRS_HDR;
9841
9842 if (!(expr->fetch->val & where)) {
9843 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule :"
9844 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9845 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9846 args[cur_arg-1], sample_src_names(expr->fetch->use));
9847 free(expr);
9848 goto out_err;
9849 }
9850
9851 if (strcmp(args[cur_arg], "table") == 0) {
9852 cur_arg++;
9853 if (!args[cur_arg]) {
9854 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : missing table name.\n",
9855 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9856 free(expr);
9857 goto out_err;
9858 }
9859 /* we copy the table name for now, it will be resolved later */
9860 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
9861 cur_arg++;
9862 }
9863 rule->arg.trk_ctr.expr = expr;
9864 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9865 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9866 char *errmsg = NULL;
9867 cur_arg = 1;
9868 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9869 rule->from = ACT_F_HTTP_RES;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9870 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9871 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9872 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9873 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9874 free(errmsg);
9875 goto out_err;
9876 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9877 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9878 action_build_list(&http_res_keywords.list, &trash);
9879 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', "
9880 "'add-header', 'del-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9881 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', 'track-sc*'"
William Lallemand2e785f22016-05-25 01:48:42 +0200[diff] [blame]9882 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9883 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9884 goto out_err;
9885 }
9886
9887 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9888 struct acl_cond *cond;
9889 char *errmsg = NULL;
9890
9891 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9892 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9893 file, linenum, args[0], errmsg);
9894 free(errmsg);
9895 goto out_err;
9896 }
9897 rule->cond = cond;
9898 }
9899 else if (*args[cur_arg]) {
9900 Alert("parsing [%s:%d]: 'http-response %s' expects"
9901 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9902 file, linenum, args[0], args[cur_arg]);
9903 goto out_err;
9904 }
9905
9906 return rule;
9907 out_err:
9908 free(rule);
9909 return NULL;
9910}
9911
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9912/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9913 * with <err> filled with the error message. If <use_fmt> is not null, builds a
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9914 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9915 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9916 */
9917struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9918 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9919{
9920 struct redirect_rule *rule;
9921 int cur_arg;
9922 int type = REDIRECT_TYPE_NONE;
9923 int code = 302;
9924 const char *destination = NULL;
9925 const char *cookie = NULL;
9926 int cookie_set = 0;
9927 unsigned int flags = REDIRECT_FLAG_NONE;
9928 struct acl_cond *cond = NULL;
9929
9930 cur_arg = 0;
9931 while (*(args[cur_arg])) {
9932 if (strcmp(args[cur_arg], "location") == 0) {
9933 if (!*args[cur_arg + 1])
9934 goto missing_arg;
9935
9936 type = REDIRECT_TYPE_LOCATION;
9937 cur_arg++;
9938 destination = args[cur_arg];
9939 }
9940 else if (strcmp(args[cur_arg], "prefix") == 0) {
9941 if (!*args[cur_arg + 1])
9942 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9943 type = REDIRECT_TYPE_PREFIX;
9944 cur_arg++;
9945 destination = args[cur_arg];
9946 }
9947 else if (strcmp(args[cur_arg], "scheme") == 0) {
9948 if (!*args[cur_arg + 1])
9949 goto missing_arg;
9950
9951 type = REDIRECT_TYPE_SCHEME;
9952 cur_arg++;
9953 destination = args[cur_arg];
9954 }
9955 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9956 if (!*args[cur_arg + 1])
9957 goto missing_arg;
9958
9959 cur_arg++;
9960 cookie = args[cur_arg];
9961 cookie_set = 1;
9962 }
9963 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9964 if (!*args[cur_arg + 1])
9965 goto missing_arg;
9966
9967 cur_arg++;
9968 cookie = args[cur_arg];
9969 cookie_set = 0;
9970 }
9971 else if (strcmp(args[cur_arg], "code") == 0) {
9972 if (!*args[cur_arg + 1])
9973 goto missing_arg;
9974
9975 cur_arg++;
9976 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9977 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9978 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9979 "'%s': unsupported HTTP code '%s' (must be one of 301, 302, 303, 307 or 308)",
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9980 args[cur_arg - 1], args[cur_arg]);
9981 return NULL;
9982 }
9983 }
9984 else if (!strcmp(args[cur_arg],"drop-query")) {
9985 flags |= REDIRECT_FLAG_DROP_QS;
9986 }
9987 else if (!strcmp(args[cur_arg],"append-slash")) {
9988 flags |= REDIRECT_FLAG_APPEND_SLASH;
9989 }
9990 else if (strcmp(args[cur_arg], "if") == 0 ||
9991 strcmp(args[cur_arg], "unless") == 0) {
9992 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9993 if (!cond) {
9994 memprintf(errmsg, "error in condition: %s", *errmsg);
9995 return NULL;
9996 }
9997 break;
9998 }
9999 else {
10000 memprintf(errmsg,
10001 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
10002 args[cur_arg]);
10003 return NULL;
10004 }
10005 cur_arg++;
10006 }
10007
10008 if (type == REDIRECT_TYPE_NONE) {
10009 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
10010 return NULL;
10011 }
10012
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]10013 if (dir && type != REDIRECT_TYPE_LOCATION) {
10014 memprintf(errmsg, "response only supports redirect type 'location'");
10015 return NULL;
10016 }
10017
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]10018 rule = calloc(1, sizeof(*rule));
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10019 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]10020 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10021
10022 if (!use_fmt) {
10023 /* old-style static redirect rule */
10024 rule->rdr_str = strdup(destination);
10025 rule->rdr_len = strlen(destination);
10026 }
10027 else {
10028 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10029
10030 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
10031 * if prefix == "/", we don't want to add anything, otherwise it
10032 * makes it hard for the user to configure a self-redirection.
10033 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]10034 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10035 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]10036 if (!parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
10037 dir ? (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRS_HDR : SMP_VAL_BE_HRS_HDR
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]10038 : (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
10039 errmsg)) {
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]10040 return NULL;
10041 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]10042 free(curproxy->conf.lfs_file);
10043 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
10044 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10045 }
10046 }
10047
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10048 if (cookie) {
10049 /* depending on cookie_set, either we want to set the cookie, or to clear it.
10050 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
10051 */
10052 rule->cookie_len = strlen(cookie);
10053 if (cookie_set) {
10054 rule->cookie_str = malloc(rule->cookie_len + 10);
10055 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10056 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
10057 rule->cookie_len += 9;
10058 } else {
10059 rule->cookie_str = malloc(rule->cookie_len + 21);
10060 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10061 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
10062 rule->cookie_len += 20;
10063 }
10064 }
10065 rule->type = type;
10066 rule->code = code;
10067 rule->flags = flags;
10068 LIST_INIT(&rule->list);
10069 return rule;
10070
10071 missing_arg:
10072 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
10073 return NULL;
10074}
10075
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10076/************************************************************************/
10077/* The code below is dedicated to ACL parsing and matching */
10078/************************************************************************/
10079
10080
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10081/* This function ensures that the prerequisites for an L7 fetch are ready,
10082 * which means that a request or response is ready. If some data is missing,
10083 * a parsing attempt is made. This is useful in TCP-based ACLs which are able
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10084 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
10085 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10086 *
10087 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10088 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
10089 * decide whether or not an HTTP message is present ;
10090 * 0 if the requested data cannot be fetched or if it is certain that
10091 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10092 * 1 if an HTTP message is ready
10093 */
James Rosewell91a41cb2015-09-18 17:11:16 +0100[diff] [blame]10094int smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10095 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10096{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10097 struct http_txn *txn;
10098 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10099
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10100 /* Note: it is possible that <s> is NULL when called before stream
10101 * initialization (eg: tcp-request connection), so this function is the
10102 * one responsible for guarding against this case for all HTTP users.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10103 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10104 if (!s)
10105 return 0;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10106
Thierry FOURNIERed08d6a2015-09-24 08:40:18 +0200[diff] [blame]10107 if (!s->txn) {
10108 if (unlikely(!http_alloc_txn(s)))
10109 return 0; /* not enough memory */
10110 http_init_txn(s);
10111 }
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10112 txn = s->txn;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10113 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10114
10115 /* Check for a dependency on a request */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10116 smp->data.type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10117
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10118 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10119 /* If the buffer does not leave enough free space at the end,
10120 * we must first realign it.
10121 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10122 if (s->req.buf->p > s->req.buf->data &&
10123 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
10124 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10125
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10126 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]10127 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10128 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10129
10130 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10131 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10132 http_msg_analyzer(msg, &txn->hdr_idx);
10133
10134 /* Still no valid request ? */
10135 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]10136 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10137 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10138 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10139 }
10140 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10141 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10142 return 0;
10143 }
10144
10145 /* OK we just got a valid HTTP request. We have some minor
10146 * preparation to perform so that further checks can rely
10147 * on HTTP tests.
10148 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10149
10150 /* If the request was parsed but was too large, we must absolutely
10151 * return an error so that it is not processed. At the moment this
10152 * cannot happen, but if the parsers are to change in the future,
10153 * we want this check to be maintained.
10154 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10155 if (unlikely(s->req.buf->i + s->req.buf->p >
10156 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10157 msg->msg_state = HTTP_MSG_ERROR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10158 smp->data.u.sint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10159 return 1;
10160 }
10161
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10162 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10163 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]10164 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10165
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10166 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
10167 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10168 }
10169
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10170 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10171 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10172 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10173
10174 /* otherwise everything's ready for the request */
10175 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10176 else {
10177 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10178 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
10179 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10180 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10181 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10182 }
10183
10184 /* everything's OK */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10185 smp->data.u.sint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10186 return 1;
10187}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10188
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10189/* 1. Check on METHOD
10190 * We use the pre-parsed method if it is known, and store its number as an
10191 * integer. If it is unknown, we use the pointer and the length.
10192 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10193static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10194{
10195 int len, meth;
10196
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]10197 len = strlen(text);
10198 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10199
10200 pattern->val.i = meth;
10201 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]10202 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10203 pattern->len = len;
10204 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10205 else {
10206 pattern->ptr.str = NULL;
10207 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10208 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10209 return 1;
10210}
10211
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10212/* This function fetches the method of current HTTP request and stores
10213 * it in the global pattern struct as a chunk. There are two possibilities :
10214 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
10215 * in <len> and <ptr> is NULL ;
10216 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
10217 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10218 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10219 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10220static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10221smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10222{
10223 int meth;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10224 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10225
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10226 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10227
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10228 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10229 meth = txn->meth;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10230 smp->data.type = SMP_T_METH;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10231 smp->data.u.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10232 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10233 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
10234 /* ensure the indexes are not affected */
10235 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10236 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10237 smp->data.u.meth.str.len = txn->req.sl.rq.m_l;
10238 smp->data.u.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10239 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10240 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10241 return 1;
10242}
10243
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10244/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10245static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10246{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10247 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10248 struct pattern_list *lst;
10249 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10250
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10251 list_for_each_entry(lst, &expr->patterns, list) {
10252 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10253
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10254 /* well-known method */
10255 if (pattern->val.i != HTTP_METH_OTHER) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10256 if (smp->data.u.meth.meth == pattern->val.i)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10257 return pattern;
10258 else
10259 continue;
10260 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10261
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10262 /* Other method, we must compare the strings */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10263 if (pattern->len != smp->data.u.meth.str.len)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10264 continue;
10265
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10266 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10267 if ((icase && strncasecmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0) ||
10268 (!icase && strncmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0))
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10269 return pattern;
10270 }
10271 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10272}
10273
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10274static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10275smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10276{
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10277 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10278 char *ptr;
10279 int len;
10280
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10281 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10282
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10283 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10284 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10285 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10286
10287 while ((len-- > 0) && (*ptr++ != '/'));
10288 if (len <= 0)
10289 return 0;
10290
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10291 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10292 smp->data.u.str.str = ptr;
10293 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10294
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10295 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10296 return 1;
10297}
10298
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10299static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10300smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10301{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10302 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10303 char *ptr;
10304 int len;
10305
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10306 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10307
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10308 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10309 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10310 return 0;
10311
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10312 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10313 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10314
10315 while ((len-- > 0) && (*ptr++ != '/'));
10316 if (len <= 0)
10317 return 0;
10318
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10319 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10320 smp->data.u.str.str = ptr;
10321 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10322
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10323 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10324 return 1;
10325}
10326
10327/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10328static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10329smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10330{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10331 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10332 char *ptr;
10333 int len;
10334
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10335 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10336
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10337 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10338 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10339 return 0;
10340
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10341 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10342 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10343
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10344 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10345 smp->data.u.sint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10346 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10347 return 1;
10348}
10349
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]10350static int
10351smp_fetch_uniqueid(const struct arg *args, struct sample *smp, const char *kw, void *private)
10352{
10353 if (LIST_ISEMPTY(&smp->sess->fe->format_unique_id))
10354 return 0;
10355
10356 if (!smp->strm->unique_id) {
10357 if ((smp->strm->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
10358 return 0;
10359 smp->strm->unique_id[0] = '\0';
10360 }
10361 smp->data.u.str.len = build_logline(smp->strm, smp->strm->unique_id,
10362 UNIQUEID_LEN, &smp->sess->fe->format_unique_id);
10363
10364 smp->data.type = SMP_T_STR;
10365 smp->data.u.str.str = smp->strm->unique_id;
10366 smp->flags = SMP_F_CONST;
10367 return 1;
10368}
10369
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10370/* returns the longest available part of the body. This requires that the body
10371 * has been waited for using http-buffer-request.
10372 */
10373static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10374smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10375{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10376 struct http_msg *msg;
10377 unsigned long len;
10378 unsigned long block1;
10379 char *body;
10380 struct chunk *temp;
10381
10382 CHECK_HTTP_MESSAGE_FIRST();
10383
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10384 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10385 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10386 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10387 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10388
10389 len = http_body_bytes(msg);
10390 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10391
10392 block1 = len;
10393 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10394 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10395
10396 if (block1 == len) {
10397 /* buffer is not wrapped (or empty) */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10398 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10399 smp->data.u.str.str = body;
10400 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10401 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10402 }
10403 else {
10404 /* buffer is wrapped, we need to defragment it */
10405 temp = get_trash_chunk();
10406 memcpy(temp->str, body, block1);
10407 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10408 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10409 smp->data.u.str.str = temp->str;
10410 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10411 smp->flags = SMP_F_VOL_TEST;
10412 }
10413 return 1;
10414}
10415
10416
10417/* returns the available length of the body. This requires that the body
10418 * has been waited for using http-buffer-request.
10419 */
10420static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10421smp_fetch_body_len(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10422{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10423 struct http_msg *msg;
10424
10425 CHECK_HTTP_MESSAGE_FIRST();
10426
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10427 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10428 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10429 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10430 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10431
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10432 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10433 smp->data.u.sint = http_body_bytes(msg);
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10434
10435 smp->flags = SMP_F_VOL_TEST;
10436 return 1;
10437}
10438
10439
10440/* returns the advertised length of the body, or the advertised size of the
10441 * chunks available in the buffer. This requires that the body has been waited
10442 * for using http-buffer-request.
10443 */
10444static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10445smp_fetch_body_size(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10446{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10447 struct http_msg *msg;
10448
10449 CHECK_HTTP_MESSAGE_FIRST();
10450
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10451 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10452 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10453 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10454 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10455
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10456 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10457 smp->data.u.sint = msg->body_len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10458
10459 smp->flags = SMP_F_VOL_TEST;
10460 return 1;
10461}
10462
10463
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10464/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10465static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10466smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10467{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10468 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10469
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10470 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10471
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10472 txn = smp->strm->txn;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10473 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10474 smp->data.u.str.len = txn->req.sl.rq.u_l;
10475 smp->data.u.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10476 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10477 return 1;
10478}
10479
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10480static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10481smp_fetch_url_ip(const struct arg *args, struct sample *smp, const char *kw, void *private)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10482{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10483 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10484 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10485
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10486 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10487
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10488 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10489 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr, NULL);
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10490 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10491 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10492
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10493 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10494 smp->data.u.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10495 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10496 return 1;
10497}
10498
10499static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10500smp_fetch_url_port(const struct arg *args, struct sample *smp, const char *kw, void *private)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10501{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10502 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10503 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10504
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10505 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10506
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10507 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10508 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr, NULL);
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10509 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10510 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10511
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10512 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10513 smp->data.u.sint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10514 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10515 return 1;
10516}
10517
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10518/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10519 * Accepts an optional argument of type string containing the header field name,
10520 * and an optional argument of type signed or unsigned integer to request an
10521 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10522 * headers are considered from the first one. It does not stop on commas and
10523 * returns full lines instead (useful for User-Agent or Date for example).
10524 */
10525static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10526smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10527{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10528 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10529 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10530 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10531 int occ = 0;
10532 const char *name_str = NULL;
10533 int name_len = 0;
10534
10535 if (!ctx) {
10536 /* first call */
10537 ctx = &static_hdr_ctx;
10538 ctx->idx = 0;
10539 smp->ctx.a[0] = ctx;
10540 }
10541
10542 if (args) {
10543 if (args[0].type != ARGT_STR)
10544 return 0;
10545 name_str = args[0].data.str.str;
10546 name_len = args[0].data.str.len;
10547
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10548 if (args[1].type == ARGT_SINT)
10549 occ = args[1].data.sint;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10550 }
10551
10552 CHECK_HTTP_MESSAGE_FIRST();
10553
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10554 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10555 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10556
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10557 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10558 /* search for header from the beginning */
10559 ctx->idx = 0;
10560
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10561 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10562 /* no explicit occurrence and single fetch => last header by default */
10563 occ = -1;
10564
10565 if (!occ)
10566 /* prepare to report multiple occurrences for ACL fetches */
10567 smp->flags |= SMP_F_NOT_LAST;
10568
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10569 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10570 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10571 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.u.str.str, &smp->data.u.str.len))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10572 return 1;
10573
10574 smp->flags &= ~SMP_F_NOT_LAST;
10575 return 0;
10576}
10577
10578/* 6. Check on HTTP header count. The number of occurrences is returned.
10579 * Accepts exactly 1 argument of type string. It does not stop on commas and
10580 * returns full lines instead (useful for User-Agent or Date for example).
10581 */
10582static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10583smp_fetch_fhdr_cnt(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10584{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10585 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10586 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10587 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10588 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10589 const char *name = NULL;
10590 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10591
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10592 if (args && args->type == ARGT_STR) {
10593 name = args->data.str.str;
10594 len = args->data.str.len;
10595 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10596
10597 CHECK_HTTP_MESSAGE_FIRST();
10598
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10599 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10600 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10601
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10602 ctx.idx = 0;
10603 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10604 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10605 cnt++;
10606
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10607 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10608 smp->data.u.sint = cnt;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10609 smp->flags = SMP_F_VOL_HDR;
10610 return 1;
10611}
10612
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10613static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10614smp_fetch_hdr_names(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10615{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10616 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10617 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10618 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10619 struct chunk *temp;
10620 char del = ',';
10621
10622 if (args && args->type == ARGT_STR)
10623 del = *args[0].data.str.str;
10624
10625 CHECK_HTTP_MESSAGE_FIRST();
10626
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10627 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10628 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10629
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10630 temp = get_trash_chunk();
10631
10632 ctx.idx = 0;
10633 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10634 if (temp->len)
10635 temp->str[temp->len++] = del;
10636 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10637 temp->len += ctx.del;
10638 }
10639
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10640 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10641 smp->data.u.str.str = temp->str;
10642 smp->data.u.str.len = temp->len;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10643 smp->flags = SMP_F_VOL_HDR;
10644 return 1;
10645}
10646
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10647/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10648 * Accepts an optional argument of type string containing the header field name,
10649 * and an optional argument of type signed or unsigned integer to request an
10650 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10651 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10652 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10653static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10654smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10655{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10656 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10657 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10658 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10659 int occ = 0;
10660 const char *name_str = NULL;
10661 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10662
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10663 if (!ctx) {
10664 /* first call */
10665 ctx = &static_hdr_ctx;
10666 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10667 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10668 }
10669
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10670 if (args) {
10671 if (args[0].type != ARGT_STR)
10672 return 0;
10673 name_str = args[0].data.str.str;
10674 name_len = args[0].data.str.len;
10675
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10676 if (args[1].type == ARGT_SINT)
10677 occ = args[1].data.sint;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10678 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10679
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10680 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10681
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10682 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10683 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10684
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10685 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10686 /* search for header from the beginning */
10687 ctx->idx = 0;
10688
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10689 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10690 /* no explicit occurrence and single fetch => last header by default */
10691 occ = -1;
10692
10693 if (!occ)
10694 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10695 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10696
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10697 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10698 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10699 if (http_get_hdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.u.str.str, &smp->data.u.str.len))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10700 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10701
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10702 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10703 return 0;
10704}
10705
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10706/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10707 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10708 */
10709static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10710smp_fetch_hdr_cnt(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10711{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10712 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10713 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10714 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10715 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10716 const char *name = NULL;
10717 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10718
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10719 if (args && args->type == ARGT_STR) {
10720 name = args->data.str.str;
10721 len = args->data.str.len;
10722 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10723
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10724 CHECK_HTTP_MESSAGE_FIRST();
10725
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10726 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10727 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10728
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10729 ctx.idx = 0;
10730 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10731 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10732 cnt++;
10733
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10734 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10735 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10736 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10737 return 1;
10738}
10739
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10740/* Fetch an HTTP header's integer value. The integer value is returned. It
10741 * takes a mandatory argument of type string and an optional one of type int
10742 * to designate a specific occurrence. It returns an unsigned integer, which
10743 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10744 */
10745static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10746smp_fetch_hdr_val(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10747{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10748 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10749
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10750 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10751 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10752 smp->data.u.sint = strl2ic(smp->data.u.str.str, smp->data.u.str.len);
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10753 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10754
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10755 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10756}
10757
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10758/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10759 * and an optional one of type int to designate a specific occurrence.
10760 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10761 */
10762static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10763smp_fetch_hdr_ip(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10764{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10765 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10766
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10767 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10768 if (url2ipv4((char *)smp->data.u.str.str, &smp->data.u.ipv4)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10769 smp->data.type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10770 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10771 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10772 struct chunk *temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10773 if (smp->data.u.str.len < temp->size - 1) {
10774 memcpy(temp->str, smp->data.u.str.str, smp->data.u.str.len);
10775 temp->str[smp->data.u.str.len] = '\0';
10776 if (inet_pton(AF_INET6, temp->str, &smp->data.u.ipv6)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10777 smp->data.type = SMP_T_IPV6;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10778 break;
10779 }
10780 }
10781 }
10782
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10783 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10784 if (!(smp->flags & SMP_F_NOT_LAST))
10785 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10786 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10787 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10788}
10789
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10790/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10791 * the first '/' after the possible hostname, and ends before the possible '?'.
10792 */
10793static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10794smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10795{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10796 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10797 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10798
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10799 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10800
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10801 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10802 end = txn->req.chn->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]10803 ptr = http_get_path(txn);
10804 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10805 return 0;
10806
10807 /* OK, we got the '/' ! */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10808 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10809 smp->data.u.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10810
10811 while (ptr < end && *ptr != '?')
10812 ptr++;
10813
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10814 smp->data.u.str.len = ptr - smp->data.u.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10815 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10816 return 1;
10817}
10818
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10819/* This produces a concatenation of the first occurrence of the Host header
10820 * followed by the path component if it begins with a slash ('/'). This means
10821 * that '*' will not be added, resulting in exactly the first Host entry.
10822 * If no Host header is found, then the path is returned as-is. The returned
10823 * value is stored in the trash so it does not need to be marked constant.
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]10824 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10825 */
10826static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10827smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10828{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10829 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10830 char *ptr, *end, *beg;
10831 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10832 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10833
10834 CHECK_HTTP_MESSAGE_FIRST();
10835
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10836 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10837 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10838 if (!http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx) || !ctx.vlen)
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10839 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10840
10841 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10842 temp = get_trash_chunk();
10843 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10844 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10845 smp->data.u.str.str = temp->str;
10846 smp->data.u.str.len = ctx.vlen;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10847
10848 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10849 end = txn->req.chn->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10850 beg = http_get_path(txn);
10851 if (!beg)
10852 beg = end;
10853
10854 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10855
10856 if (beg < ptr && *beg == '/') {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10857 memcpy(smp->data.u.str.str + smp->data.u.str.len, beg, ptr - beg);
10858 smp->data.u.str.len += ptr - beg;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10859 }
10860
10861 smp->flags = SMP_F_VOL_1ST;
10862 return 1;
10863}
10864
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10865/* This produces a 32-bit hash of the concatenation of the first occurrence of
10866 * the Host header followed by the path component if it begins with a slash ('/').
10867 * This means that '*' will not be added, resulting in exactly the first Host
10868 * entry. If no Host header is found, then the path is used. The resulting value
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10869 * is hashed using the path hash followed by a full avalanche hash and provides a
10870 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10871 * high-traffic sites without having to store whole paths.
10872 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10873int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10874smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10875{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10876 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10877 struct hdr_ctx ctx;
10878 unsigned int hash = 0;
10879 char *ptr, *beg, *end;
10880 int len;
10881
10882 CHECK_HTTP_MESSAGE_FIRST();
10883
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10884 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10885 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10886 if (http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10887 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10888 ptr = ctx.line + ctx.val;
10889 len = ctx.vlen;
10890 while (len--)
10891 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10892 }
10893
10894 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10895 end = txn->req.chn->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10896 beg = http_get_path(txn);
10897 if (!beg)
10898 beg = end;
10899
10900 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10901
10902 if (beg < ptr && *beg == '/') {
10903 while (beg < ptr)
10904 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10905 }
10906 hash = full_hash(hash);
10907
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10908 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10909 smp->data.u.sint = hash;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10910 smp->flags = SMP_F_VOL_1ST;
10911 return 1;
10912}
10913
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10914/* This concatenates the source address with the 32-bit hash of the Host and
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10915 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10916 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10917 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10918 * that in environments where IPv6 is insignificant, truncating the output to
10919 * 8 bytes would still work.
10920 */
10921static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10922smp_fetch_base32_src(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10923{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10924 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10925 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10926
10927 if (!cli_conn)
10928 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10929
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10930 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10931 return 0;
10932
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10933 temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10934 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10935 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10936
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10937 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10938 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10939 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr, 4);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10940 temp->len += 4;
10941 break;
10942 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10943 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_addr, 16);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10944 temp->len += 16;
10945 break;
10946 default:
10947 return 0;
10948 }
10949
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10950 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10951 smp->data.type = SMP_T_BIN;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10952 return 1;
10953}
10954
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10955/* Extracts the query string, which comes after the question mark '?'. If no
10956 * question mark is found, nothing is returned. Otherwise it returns a sample
10957 * of type string carrying the whole query string.
10958 */
10959static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10960smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10961{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10962 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10963 char *ptr, *end;
10964
10965 CHECK_HTTP_MESSAGE_FIRST();
10966
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10967 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10968 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
10969 end = ptr + txn->req.sl.rq.u_l;
10970
10971 /* look up the '?' */
10972 do {
10973 if (ptr == end)
10974 return 0;
10975 } while (*ptr++ != '?');
10976
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10977 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10978 smp->data.u.str.str = ptr;
10979 smp->data.u.str.len = end - ptr;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10980 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
10981 return 1;
10982}
10983
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10984static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10985smp_fetch_proto_http(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10986{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10987 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10988 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10989 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10990
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10991 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10992
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10993 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10994 smp->data.u.sint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10995 return 1;
10996}
10997
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10998/* return a valid test if the current request is the first one on the connection */
10999static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11000smp_fetch_http_first_req(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11001{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11002 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11003 smp->data.u.sint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11004 return 1;
11005}
11006
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11007/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11008static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11009smp_fetch_http_auth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11010{
11011
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11012 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11013 return 0;
11014
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]11015 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11016
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11017 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11018 return 0;
11019
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11020 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11021 smp->data.u.sint = check_user(args->data.usr, smp->strm->txn->auth.user,
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11022 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11023 return 1;
11024}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11025
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11026/* Accepts exactly 1 argument of type userlist */
11027static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11028smp_fetch_http_auth_grp(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11029{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11030 if (!args || args->type != ARGT_USR)
11031 return 0;
11032
11033 CHECK_HTTP_MESSAGE_FIRST();
11034
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11035 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11036 return 0;
11037
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11038 /* if the user does not belong to the userlist or has a wrong password,
11039 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11040 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11041 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11042 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
11043 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11044 return 0;
11045
11046 /* pat_match_auth() will need the user list */
11047 smp->ctx.a[0] = args->data.usr;
11048
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11049 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11050 smp->flags = SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11051 smp->data.u.str.str = smp->strm->txn->auth.user;
11052 smp->data.u.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11053
11054 return 1;
11055}
11056
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11057/* Try to find the next occurrence of a cookie name in a cookie header value.
11058 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
11059 * the cookie value is returned into *value and *value_l, and the function
11060 * returns a pointer to the next pointer to search from if the value was found.
11061 * Otherwise if the cookie was not found, NULL is returned and neither value
11062 * nor value_l are touched. The input <hdr> string should first point to the
11063 * header's value, and the <hdr_end> pointer must point to the first character
11064 * not part of the value. <list> must be non-zero if value may represent a list
11065 * of values (cookie headers). This makes it faster to abort parsing when no
11066 * list is expected.
11067 */
David Carlier4686f792015-09-25 14:10:50 +0100[diff] [blame]11068char *
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11069extract_cookie_value(char *hdr, const char *hdr_end,
11070 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]11071 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11072{
11073 char *equal, *att_end, *att_beg, *val_beg, *val_end;
11074 char *next;
11075
11076 /* we search at least a cookie name followed by an equal, and more
11077 * generally something like this :
11078 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
11079 */
11080 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
11081 /* Iterate through all cookies on this line */
11082
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11083 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11084 att_beg++;
11085
11086 /* find att_end : this is the first character after the last non
11087 * space before the equal. It may be equal to hdr_end.
11088 */
11089 equal = att_end = att_beg;
11090
11091 while (equal < hdr_end) {
11092 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
11093 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11094 if (HTTP_IS_SPHT(*equal++))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11095 continue;
11096 att_end = equal;
11097 }
11098
11099 /* here, <equal> points to '=', a delimitor or the end. <att_end>
11100 * is between <att_beg> and <equal>, both may be identical.
11101 */
11102
11103 /* look for end of cookie if there is an equal sign */
11104 if (equal < hdr_end && *equal == '=') {
11105 /* look for the beginning of the value */
11106 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11107 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11108 val_beg++;
11109
11110 /* find the end of the value, respecting quotes */
11111 next = find_cookie_value_end(val_beg, hdr_end);
11112
11113 /* make val_end point to the first white space or delimitor after the value */
11114 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11115 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11116 val_end--;
11117 } else {
11118 val_beg = val_end = next = equal;
11119 }
11120
11121 /* We have nothing to do with attributes beginning with '$'. However,
11122 * they will automatically be removed if a header before them is removed,
11123 * since they're supposed to be linked together.
11124 */
11125 if (*att_beg == '$')
11126 continue;
11127
11128 /* Ignore cookies with no equal sign */
11129 if (equal == next)
11130 continue;
11131
11132 /* Now we have the cookie name between att_beg and att_end, and
11133 * its value between val_beg and val_end.
11134 */
11135
11136 if (att_end - att_beg == cookie_name_l &&
11137 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
11138 /* let's return this value and indicate where to go on from */
11139 *value = val_beg;
11140 *value_l = val_end - val_beg;
11141 return next + 1;
11142 }
11143
11144 /* Set-Cookie headers only have the name in the first attr=value part */
11145 if (!list)
11146 break;
11147 }
11148
11149 return NULL;
11150}
11151
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11152/* Fetch a captured HTTP request header. The index is the position of
11153 * the "capture" option in the configuration file
11154 */
11155static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11156smp_fetch_capture_header_req(const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11157{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11158 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11159 int idx;
11160
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11161 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11162 return 0;
11163
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11164 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11165
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11166 if (idx > (fe->nb_req_cap - 1) || smp->strm->req_cap == NULL || smp->strm->req_cap[idx] == NULL)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11167 return 0;
11168
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11169 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11170 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11171 smp->data.u.str.str = smp->strm->req_cap[idx];
11172 smp->data.u.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11173
11174 return 1;
11175}
11176
11177/* Fetch a captured HTTP response header. The index is the position of
11178 * the "capture" option in the configuration file
11179 */
11180static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11181smp_fetch_capture_header_res(const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11182{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11183 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11184 int idx;
11185
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11186 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11187 return 0;
11188
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11189 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11190
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11191 if (idx > (fe->nb_rsp_cap - 1) || smp->strm->res_cap == NULL || smp->strm->res_cap[idx] == NULL)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11192 return 0;
11193
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11194 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11195 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11196 smp->data.u.str.str = smp->strm->res_cap[idx];
11197 smp->data.u.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11198
11199 return 1;
11200}
11201
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11202/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
11203static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11204smp_fetch_capture_req_method(const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11205{
11206 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11207 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11208 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11209
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11210 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11211 return 0;
11212
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11213 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11214
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11215 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11216 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11217
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11218 temp = get_trash_chunk();
11219 temp->str = txn->uri;
11220 temp->len = ptr - txn->uri;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11221 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11222 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11223 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11224
11225 return 1;
11226
11227}
11228
11229/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
11230static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11231smp_fetch_capture_req_uri(const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11232{
11233 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11234 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11235 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11236
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11237 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11238 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11239
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11240 ptr = txn->uri;
11241
11242 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11243 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11244
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11245 if (!*ptr)
11246 return 0;
11247
11248 ptr++; /* skip the space */
11249
11250 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11251 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11252 if (!ptr)
11253 return 0;
11254 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
11255 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11256
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11257 smp->data.u.str = *temp;
11258 smp->data.u.str.len = ptr - temp->str;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11259 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11260 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11261
11262 return 1;
11263}
11264
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11265/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
11266 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11267 */
11268static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11269smp_fetch_capture_req_ver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11270{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11271 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11272
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11273 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11274 return 0;
11275
11276 if (txn->req.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11277 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11278 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11279 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11280
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11281 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11282 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11283 smp->flags = SMP_F_CONST;
11284 return 1;
11285
11286}
11287
11288/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11289 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11290 */
11291static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11292smp_fetch_capture_res_ver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11293{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11294 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11295
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11296 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11297 return 0;
11298
11299 if (txn->rsp.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11300 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11301 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11302 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11303
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11304 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11305 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11306 smp->flags = SMP_F_CONST;
11307 return 1;
11308
11309}
11310
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11311
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11312/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11313 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11314 * end-of-header-value, and smp->ctx.a[2] for the hdr_ctx. Depending on
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11315 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11316 * The cookie name is in args and the name length in args->data.str.len.
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11317 * Accepts exactly 1 argument of type string. If the input options indicate
11318 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11319 * The returned sample is of type CSTR. Can be used to parse cookies in other
11320 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11321 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11322int smp_fetch_cookie(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11323{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11324 struct http_txn *txn;
11325 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11326 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11327 const struct http_msg *msg;
11328 const char *hdr_name;
11329 int hdr_name_len;
11330 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11331 int occ = 0;
11332 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11333
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11334 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11335 return 0;
11336
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11337 if (!ctx) {
11338 /* first call */
11339 ctx = &static_hdr_ctx;
11340 ctx->idx = 0;
11341 smp->ctx.a[2] = ctx;
11342 }
11343
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11344 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11345
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11346 txn = smp->strm->txn;
11347 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11348
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11349 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11350 msg = &txn->req;
11351 hdr_name = "Cookie";
11352 hdr_name_len = 6;
11353 } else {
11354 msg = &txn->rsp;
11355 hdr_name = "Set-Cookie";
11356 hdr_name_len = 10;
11357 }
11358
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11359 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11360 /* no explicit occurrence and single fetch => last cookie by default */
11361 occ = -1;
11362
11363 /* OK so basically here, either we want only one value and it's the
11364 * last one, or we want to iterate over all of them and we fetch the
11365 * next one.
11366 */
11367
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11368 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11369 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11370 /* search for the header from the beginning, we must first initialize
11371 * the search parameters.
11372 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11373 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11374 ctx->idx = 0;
11375 }
11376
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11377 smp->flags |= SMP_F_VOL_HDR;
11378
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11379 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11380 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11381 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11382 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11383 goto out;
11384
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11385 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11386 continue;
11387
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11388 smp->ctx.a[0] = ctx->line + ctx->val;
11389 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11390 }
11391
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11392 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11393 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11394 smp->ctx.a[0] = extract_cookie_value(smp->ctx.a[0], smp->ctx.a[1],
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11395 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11396 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11397 &smp->data.u.str.str,
11398 &smp->data.u.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11399 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11400 found = 1;
11401 if (occ >= 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11402 /* one value was returned into smp->data.u.str.{str,len} */
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11403 smp->flags |= SMP_F_NOT_LAST;
11404 return 1;
11405 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11406 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11407 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11408 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11409 /* all cookie headers and values were scanned. If we're looking for the
11410 * last occurrence, we may return it now.
11411 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11412 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11413 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11414 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11415}
11416
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11417/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11418 * match the name in args and args->data.str.len. If <multi> is non-null, then
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]11419 * multiple cookies may be parsed on the same line. The returned sample is of
11420 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11421 */
11422static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11423smp_fetch_cookie_cnt(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11424{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11425 struct http_txn *txn;
11426 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11427 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11428 const struct http_msg *msg;
11429 const char *hdr_name;
11430 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11431 int cnt;
11432 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11433 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11434
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11435 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11436 return 0;
11437
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11438 CHECK_HTTP_MESSAGE_FIRST();
11439
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11440 txn = smp->strm->txn;
11441 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11442
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11443 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11444 msg = &txn->req;
11445 hdr_name = "Cookie";
11446 hdr_name_len = 6;
11447 } else {
11448 msg = &txn->rsp;
11449 hdr_name = "Set-Cookie";
11450 hdr_name_len = 10;
11451 }
11452
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11453 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11454 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11455 ctx.idx = 0;
11456 cnt = 0;
11457
11458 while (1) {
11459 /* Note: val_beg == NULL every time we need to fetch a new header */
11460 if (!val_beg) {
11461 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11462 break;
11463
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11464 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11465 continue;
11466
11467 val_beg = ctx.line + ctx.val;
11468 val_end = val_beg + ctx.vlen;
11469 }
11470
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11471 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11472 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11473 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11474 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11475 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11476 &smp->data.u.str.str,
11477 &smp->data.u.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11478 cnt++;
11479 }
11480 }
11481
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11482 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11483 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11484 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11485 return 1;
11486}
11487
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11488/* Fetch an cookie's integer value. The integer value is returned. It
11489 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11490 */
11491static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11492smp_fetch_cookie_val(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11493{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11494 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11495
11496 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11497 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11498 smp->data.u.sint = strl2ic(smp->data.u.str.str, smp->data.u.str.len);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11499 }
11500
11501 return ret;
11502}
11503
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11504/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11505/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11506/************************************************************************/
11507
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11508/*
11509 * Given a path string and its length, find the position of beginning of the
11510 * query string. Returns NULL if no query string is found in the path.
11511 *
11512 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11513 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11514 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11515 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11516static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11517{
11518 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11519
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11520 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11521 return p ? p + 1 : NULL;
11522}
11523
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11524static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11525{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11526 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11527}
11528
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11529/* after increasing a pointer value, it can exceed the first buffer
11530 * size. This function transform the value of <ptr> according with
11531 * the expected position. <chunks> is an array of the one or two
11532 * avalaible chunks. The first value is the start of the first chunk,
11533 * the second value if the end+1 of the first chunks. The third value
11534 * is NULL or the start of the second chunk and the fourth value is
11535 * the end+1 of the second chunk. The function returns 1 if does a
11536 * wrap, else returns 0.
11537 */
11538static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11539{
11540 if (*ptr < chunks[1])
11541 return 0;
11542 if (!chunks[2])
11543 return 0;
11544 *ptr = chunks[2] + ( *ptr - chunks[1] );
11545 return 1;
11546}
11547
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11548/*
11549 * Given a url parameter, find the starting position of the first occurence,
11550 * or NULL if the parameter is not found.
11551 *
11552 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11553 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11554 *
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11555 * Warning: this function returns a pointer that can point to the first chunk
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11556 * or the second chunk. The caller must be check the position before using the
11557 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11558 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11559static const char *
11560find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11561 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11562 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11563{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11564 const char *pos, *last, *equal;
11565 const char **bufs = chunks;
11566 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11567
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11568
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11569 pos = bufs[0];
11570 last = bufs[1];
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11571 while (pos < last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11572 /* Check the equal. */
11573 equal = pos + url_param_name_l;
11574 if (fix_pointer_if_wrap(chunks, &equal)) {
11575 if (equal >= chunks[3])
11576 return NULL;
11577 } else {
11578 if (equal >= chunks[1])
11579 return NULL;
11580 }
11581 if (*equal == '=') {
11582 if (pos + url_param_name_l > last) {
11583 /* process wrap case, we detect a wrap. In this case, the
11584 * comparison is performed in two parts.
11585 */
11586
11587 /* This is the end, we dont have any other chunk. */
11588 if (bufs != chunks || !bufs[2])
11589 return NULL;
11590
11591 /* Compute the length of each part of the comparison. */
11592 l1 = last - pos;
11593 l2 = url_param_name_l - l1;
11594
11595 /* The second buffer is too short to contain the compared string. */
11596 if (bufs[2] + l2 > bufs[3])
11597 return NULL;
11598
11599 if (memcmp(pos, url_param_name, l1) == 0 &&
11600 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11601 return pos;
11602
11603 /* Perform wrapping and jump the string who fail the comparison. */
11604 bufs += 2;
11605 pos = bufs[0] + l2;
11606 last = bufs[1];
11607
11608 } else {
11609 /* process a simple comparison. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11610 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11611 return pos;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11612 pos += url_param_name_l + 1;
11613 if (fix_pointer_if_wrap(chunks, &pos))
11614 last = bufs[2];
11615 }
11616 }
11617
11618 while (1) {
11619 /* Look for the next delimiter. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11620 while (pos < last && !is_param_delimiter(*pos, delim))
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11621 pos++;
11622 if (pos < last)
11623 break;
11624 /* process buffer wrapping. */
11625 if (bufs != chunks || !bufs[2])
11626 return NULL;
11627 bufs += 2;
11628 pos = bufs[0];
11629 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11630 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11631 pos++;
11632 }
11633 return NULL;
11634}
11635
11636/*
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11637 * Given a url parameter name and a query string, find the next value.
11638 * An empty url_param_name matches the first available parameter.
11639 * If the parameter is found, 1 is returned and *vstart / *vend are updated to
11640 * respectively provide a pointer to the value and its end.
11641 * Otherwise, 0 is returned and vstart/vend are not modified.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11642 */
11643static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11644find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11645 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11646 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11647{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11648 const char *arg_start, *qs_end;
11649 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11650
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11651 arg_start = chunks[0];
11652 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11653 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11654 /* Looks for an argument name. */
11655 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11656 url_param_name, url_param_name_l,
11657 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11658 /* Check for wrapping. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11659 if (arg_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11660 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11661 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11662 if (!arg_start)
11663 return 0;
11664
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11665 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11666 while (1) {
11667 /* looks for the first argument. */
11668 value_start = memchr(arg_start, '=', qs_end - arg_start);
11669 if (!value_start) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11670 /* Check for wrapping. */
11671 if (arg_start >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11672 arg_start < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11673 chunks[2]) {
11674 arg_start = chunks[2];
11675 qs_end = chunks[3];
11676 continue;
11677 }
11678 return 0;
11679 }
11680 break;
11681 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11682 value_start++;
11683 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11684 else {
11685 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11686 value_start = arg_start + url_param_name_l + 1;
11687
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11688 /* Check for pointer wrapping. */
11689 if (fix_pointer_if_wrap(chunks, &value_start)) {
11690 /* Update the end pointer. */
11691 qs_end = chunks[3];
11692
11693 /* Check for overflow. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11694 if (value_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11695 return 0;
11696 }
11697 }
11698
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11699 value_end = value_start;
11700
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11701 while (1) {
11702 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11703 value_end++;
11704 if (value_end < qs_end)
11705 break;
11706 /* process buffer wrapping. */
11707 if (value_end >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11708 value_end < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11709 chunks[2]) {
11710 value_end = chunks[2];
11711 qs_end = chunks[3];
11712 continue;
11713 }
11714 break;
11715 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11716
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11717 *vstart = value_start;
11718 *vend = value_end;
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11719 return 1;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11720}
11721
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11722/* This scans a URL-encoded query string. It takes an optionally wrapping
11723 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11724 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11725 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11726 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11727static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11728smp_fetch_param(char delim, const char *name, int name_len, const struct arg *args, struct sample *smp, const char *kw, void *private)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11729{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11730 const char *vstart, *vend;
11731 struct chunk *temp;
11732 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11733
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11734 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11735 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11736 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11737 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11738 return 0;
11739
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11740 /* Create sample. If the value is contiguous, return the pointer as CONST,
11741 * if the value is wrapped, copy-it in a buffer.
11742 */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11743 smp->data.type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11744 if (chunks[2] &&
11745 vstart >= chunks[0] && vstart <= chunks[1] &&
11746 vend >= chunks[2] && vend <= chunks[3]) {
11747 /* Wrapped case. */
11748 temp = get_trash_chunk();
11749 memcpy(temp->str, vstart, chunks[1] - vstart);
11750 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11751 smp->data.u.str.str = temp->str;
11752 smp->data.u.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11753 } else {
11754 /* Contiguous case. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11755 smp->data.u.str.str = (char *)vstart;
11756 smp->data.u.str.len = vend - vstart;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11757 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11758 }
11759
11760 /* Update context, check wrapping. */
11761 chunks[0] = vend;
11762 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11763 chunks[1] = chunks[3];
11764 chunks[2] = NULL;
11765 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11766
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11767 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11768 smp->flags |= SMP_F_NOT_LAST;
11769
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11770 return 1;
11771}
11772
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11773/* This function iterates over each parameter of the query string. It uses
11774 * ctx->a[0] and ctx->a[1] to store the beginning and end of the current
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11775 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11776 * An optional parameter name is passed in args[0], otherwise any parameter is
11777 * considered. It supports an optional delimiter argument for the beginning of
11778 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11779 */
11780static int
11781smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11782{
11783 struct http_msg *msg;
11784 char delim = '?';
11785 const char *name;
11786 int name_len;
11787
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11788 if (!args ||
11789 (args[0].type && args[0].type != ARGT_STR) ||
11790 (args[1].type && args[1].type != ARGT_STR))
11791 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11792
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11793 name = "";
11794 name_len = 0;
11795 if (args->type == ARGT_STR) {
11796 name = args->data.str.str;
11797 name_len = args->data.str.len;
11798 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11799
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11800 if (args[1].type)
11801 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11802
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11803 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11804 CHECK_HTTP_MESSAGE_FIRST();
11805
11806 msg = &smp->strm->txn->req;
11807
11808 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11809 msg->sl.rq.u_l, delim);
11810 if (!smp->ctx.a[0])
11811 return 0;
11812
11813 smp->ctx.a[1] = msg->chn->buf->p + msg->sl.rq.u + msg->sl.rq.u_l;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11814
11815 /* Assume that the context is filled with NULL pointer
11816 * before the first call.
11817 * smp->ctx.a[2] = NULL;
11818 * smp->ctx.a[3] = NULL;
11819 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11820 }
11821
11822 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11823}
11824
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11825/* This function iterates over each parameter of the body. This requires
11826 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11827 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11828 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11829 * optional second part if the body wraps at the end of the buffer. An optional
11830 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11831 */
11832static int
11833smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11834{
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11835 struct http_msg *msg;
11836 unsigned long len;
11837 unsigned long block1;
11838 char *body;
11839 const char *name;
11840 int name_len;
11841
11842 if (!args || (args[0].type && args[0].type != ARGT_STR))
11843 return 0;
11844
11845 name = "";
11846 name_len = 0;
11847 if (args[0].type == ARGT_STR) {
11848 name = args[0].data.str.str;
11849 name_len = args[0].data.str.len;
11850 }
11851
11852 if (!smp->ctx.a[0]) { // first call, find the query string
11853 CHECK_HTTP_MESSAGE_FIRST();
11854
11855 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11856 msg = &smp->strm->txn->req;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11857 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11858 msg = &smp->strm->txn->rsp;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11859
11860 len = http_body_bytes(msg);
11861 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11862
11863 block1 = len;
11864 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11865 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11866
11867 if (block1 == len) {
11868 /* buffer is not wrapped (or empty) */
11869 smp->ctx.a[0] = body;
11870 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11871
11872 /* Assume that the context is filled with NULL pointer
11873 * before the first call.
11874 * smp->ctx.a[2] = NULL;
11875 * smp->ctx.a[3] = NULL;
11876 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11877 }
11878 else {
11879 /* buffer is wrapped, we need to defragment it */
11880 smp->ctx.a[0] = body;
11881 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11882 smp->ctx.a[2] = msg->chn->buf->data;
11883 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11884 }
11885 }
11886 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11887}
11888
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11889/* Return the signed integer value for the specified url parameter (see url_param
11890 * above).
11891 */
11892static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11893smp_fetch_url_param_val(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11894{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11895 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11896
11897 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11898 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11899 smp->data.u.sint = strl2ic(smp->data.u.str.str, smp->data.u.str.len);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11900 }
11901
11902 return ret;
11903}
11904
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11905/* This produces a 32-bit hash of the concatenation of the first occurrence of
11906 * the Host header followed by the path component if it begins with a slash ('/').
11907 * This means that '*' will not be added, resulting in exactly the first Host
11908 * entry. If no Host header is found, then the path is used. The resulting value
11909 * is hashed using the url hash followed by a full avalanche hash and provides a
11910 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11911 * high-traffic sites without having to store whole paths.
11912 * this differs from the base32 functions in that it includes the url parameters
11913 * as well as the path
11914 */
11915static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11916smp_fetch_url32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11917{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11918 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11919 struct hdr_ctx ctx;
11920 unsigned int hash = 0;
11921 char *ptr, *beg, *end;
11922 int len;
11923
11924 CHECK_HTTP_MESSAGE_FIRST();
11925
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11926 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11927 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11928 if (http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11929 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11930 ptr = ctx.line + ctx.val;
11931 len = ctx.vlen;
11932 while (len--)
11933 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11934 }
11935
11936 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11937 end = txn->req.chn->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11938 beg = http_get_path(txn);
11939 if (!beg)
11940 beg = end;
11941
11942 for (ptr = beg; ptr < end ; ptr++);
11943
11944 if (beg < ptr && *beg == '/') {
11945 while (beg < ptr)
11946 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11947 }
11948 hash = full_hash(hash);
11949
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11950 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11951 smp->data.u.sint = hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11952 smp->flags = SMP_F_VOL_1ST;
11953 return 1;
11954}
11955
11956/* This concatenates the source address with the 32-bit hash of the Host and
11957 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11958 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11959 * on the source address length. The URL hash is stored before the address so
11960 * that in environments where IPv6 is insignificant, truncating the output to
11961 * 8 bytes would still work.
11962 */
11963static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11964smp_fetch_url32_src(const struct arg *args, struct sample *smp, const char *kw, void *private)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11965{
11966 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11967 struct connection *cli_conn = objt_conn(smp->sess->origin);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11968
Dragan Dosendb5af612016-06-16 11:23:01 +0200[diff] [blame]11969 if (!cli_conn)
11970 return 0;
11971
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11972 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11973 return 0;
11974
11975 temp = get_trash_chunk();
Dragan Dosene5f41332016-06-16 11:08:08 +0200[diff] [blame]11976 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
11977 temp->len += sizeof(unsigned int);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11978
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11979 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11980 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11981 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr, 4);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11982 temp->len += 4;
11983 break;
11984 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11985 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_addr, 16);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11986 temp->len += 16;
11987 break;
11988 default:
11989 return 0;
11990 }
11991
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11992 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11993 smp->data.type = SMP_T_BIN;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11994 return 1;
11995}
11996
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11997/* This function is used to validate the arguments passed to any "hdr" fetch
11998 * keyword. These keywords support an optional positive or negative occurrence
11999 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
12000 * is assumed that the types are already the correct ones. Returns 0 on error,
12001 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
12002 * error message in case of error, that the caller is responsible for freeing.
12003 * The initial location must either be freeable or NULL.
12004 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]12005int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12006{
12007 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]12008 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12009 return 0;
12010 }
12011 return 1;
12012}
12013
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12014/* takes an UINT value on input supposed to represent the time since EPOCH,
12015 * adds an optional offset found in args[0] and emits a string representing
12016 * the date in RFC-1123/5322 format.
12017 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12018static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12019{
Cyril Bontéf78d8962016-01-22 19:40:28 +0100[diff] [blame]12020 const char day[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12021 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
12022 struct chunk *temp;
12023 struct tm *tm;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12024 /* With high numbers, the date returned can be negative, the 55 bits mask prevent this. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12025 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12026
12027 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12028 if (args && (args[0].type == ARGT_SINT))
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12029 curr_date += args[0].data.sint;
12030
12031 tm = gmtime(&curr_date);
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +0200[diff] [blame]12032 if (!tm)
12033 return 0;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12034
12035 temp = get_trash_chunk();
12036 temp->len = snprintf(temp->str, temp->size - temp->len,
12037 "%s, %02d %s %04d %02d:%02d:%02d GMT",
12038 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
12039 tm->tm_hour, tm->tm_min, tm->tm_sec);
12040
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12041 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]12042 smp->data.type = SMP_T_STR;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12043 return 1;
12044}
12045
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12046/* Match language range with language tag. RFC2616 14.4:
12047 *
12048 * A language-range matches a language-tag if it exactly equals
12049 * the tag, or if it exactly equals a prefix of the tag such
12050 * that the first tag character following the prefix is "-".
12051 *
12052 * Return 1 if the strings match, else return 0.
12053 */
12054static inline int language_range_match(const char *range, int range_len,
12055 const char *tag, int tag_len)
12056{
12057 const char *end = range + range_len;
12058 const char *tend = tag + tag_len;
12059 while (range < end) {
12060 if (*range == '-' && tag == tend)
12061 return 1;
12062 if (*range != *tag || tag == tend)
12063 return 0;
12064 range++;
12065 tag++;
12066 }
12067 /* Return true only if the last char of the tag is matched. */
12068 return tag == tend;
12069}
12070
12071/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12072static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12073{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12074 const char *al = smp->data.u.str.str;
12075 const char *end = al + smp->data.u.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12076 const char *token;
12077 int toklen;
12078 int qvalue;
12079 const char *str;
12080 const char *w;
12081 int best_q = 0;
12082
12083 /* Set the constant to the sample, because the output of the
12084 * function will be peek in the constant configuration string.
12085 */
12086 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12087 smp->data.u.str.size = 0;
12088 smp->data.u.str.str = "";
12089 smp->data.u.str.len = 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12090
12091 /* Parse the accept language */
12092 while (1) {
12093
12094 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12095 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12096 al++;
12097 if (al >= end)
12098 break;
12099
12100 /* Start of the fisrt word. */
12101 token = al;
12102
12103 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12104 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12105 al++;
12106 if (al == token)
12107 goto expect_comma;
12108
12109 /* Length of the token. */
12110 toklen = al - token;
12111 qvalue = 1000;
12112
12113 /* Check if the token exists in the list. If the token not exists,
12114 * jump to the next token.
12115 */
12116 str = args[0].data.str.str;
12117 w = str;
12118 while (1) {
12119 if (*str == ';' || *str == '\0') {
12120 if (language_range_match(token, toklen, w, str-w))
12121 goto look_for_q;
12122 if (*str == '\0')
12123 goto expect_comma;
12124 w = str + 1;
12125 }
12126 str++;
12127 }
12128 goto expect_comma;
12129
12130look_for_q:
12131
12132 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12133 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12134 al++;
12135 if (al >= end)
12136 goto process_value;
12137
12138 /* If ',' is found, process the result */
12139 if (*al == ',')
12140 goto process_value;
12141
12142 /* If the character is different from ';', look
12143 * for the end of the header part in best effort.
12144 */
12145 if (*al != ';')
12146 goto expect_comma;
12147
12148 /* Assumes that the char is ';', now expect "q=". */
12149 al++;
12150
12151 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12152 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12153 al++;
12154 if (al >= end)
12155 goto process_value;
12156
12157 /* Expect 'q'. If no 'q', continue in best effort */
12158 if (*al != 'q')
12159 goto process_value;
12160 al++;
12161
12162 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12163 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12164 al++;
12165 if (al >= end)
12166 goto process_value;
12167
12168 /* Expect '='. If no '=', continue in best effort */
12169 if (*al != '=')
12170 goto process_value;
12171 al++;
12172
12173 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12174 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12175 al++;
12176 if (al >= end)
12177 goto process_value;
12178
12179 /* Parse the q value. */
12180 qvalue = parse_qvalue(al, &al);
12181
12182process_value:
12183
12184 /* If the new q value is the best q value, then store the associated
12185 * language in the response. If qvalue is the biggest value (1000),
12186 * break the process.
12187 */
12188 if (qvalue > best_q) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12189 smp->data.u.str.str = (char *)w;
12190 smp->data.u.str.len = str - w;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12191 if (qvalue >= 1000)
12192 break;
12193 best_q = qvalue;
12194 }
12195
12196expect_comma:
12197
12198 /* Expect comma or end. If the end is detected, quit the loop. */
12199 while (al < end && *al != ',')
12200 al++;
12201 if (al >= end)
12202 break;
12203
12204 /* Comma is found, jump it and restart the analyzer. */
12205 al++;
12206 }
12207
12208 /* Set default value if required. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12209 if (smp->data.u.str.len == 0 && args[1].type == ARGT_STR) {
12210 smp->data.u.str.str = args[1].data.str.str;
12211 smp->data.u.str.len = args[1].data.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12212 }
12213
12214 /* Return true only if a matching language was found. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12215 return smp->data.u.str.len != 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12216}
12217
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12218/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12219static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12220{
12221 /* If the constant flag is set or if not size is avalaible at
12222 * the end of the buffer, copy the string in other buffer
12223 * before decoding.
12224 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12225 if (smp->flags & SMP_F_CONST || smp->data.u.str.size <= smp->data.u.str.len) {
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12226 struct chunk *str = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12227 memcpy(str->str, smp->data.u.str.str, smp->data.u.str.len);
12228 smp->data.u.str.str = str->str;
12229 smp->data.u.str.size = str->size;
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12230 smp->flags &= ~SMP_F_CONST;
12231 }
12232
12233 /* Add final \0 required by url_decode(), and convert the input string. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12234 smp->data.u.str.str[smp->data.u.str.len] = '\0';
12235 smp->data.u.str.len = url_decode(smp->data.u.str.str);
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12236 return 1;
12237}
12238
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12239static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
12240{
12241 struct proxy *fe = strm_fe(smp->strm);
12242 int idx, i;
12243 struct cap_hdr *hdr;
12244 int len;
12245
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12246 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12247 return 0;
12248
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12249 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12250
12251 /* Check the availibity of the capture id. */
12252 if (idx > fe->nb_req_cap - 1)
12253 return 0;
12254
12255 /* Look for the original configuration. */
12256 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
12257 hdr != NULL && i != idx ;
12258 i--, hdr = hdr->next);
12259 if (!hdr)
12260 return 0;
12261
12262 /* check for the memory allocation */
12263 if (smp->strm->req_cap[hdr->index] == NULL)
12264 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
12265 if (smp->strm->req_cap[hdr->index] == NULL)
12266 return 0;
12267
12268 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12269 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12270 if (len > hdr->len)
12271 len = hdr->len;
12272
12273 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12274 memcpy(smp->strm->req_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12275 smp->strm->req_cap[idx][len] = '\0';
12276
12277 return 1;
12278}
12279
12280static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
12281{
12282 struct proxy *fe = strm_fe(smp->strm);
12283 int idx, i;
12284 struct cap_hdr *hdr;
12285 int len;
12286
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12287 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12288 return 0;
12289
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12290 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12291
12292 /* Check the availibity of the capture id. */
12293 if (idx > fe->nb_rsp_cap - 1)
12294 return 0;
12295
12296 /* Look for the original configuration. */
12297 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12298 hdr != NULL && i != idx ;
12299 i--, hdr = hdr->next);
12300 if (!hdr)
12301 return 0;
12302
12303 /* check for the memory allocation */
12304 if (smp->strm->res_cap[hdr->index] == NULL)
12305 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
12306 if (smp->strm->res_cap[hdr->index] == NULL)
12307 return 0;
12308
12309 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12310 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12311 if (len > hdr->len)
12312 len = hdr->len;
12313
12314 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12315 memcpy(smp->strm->res_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12316 smp->strm->res_cap[idx][len] = '\0';
12317
12318 return 1;
12319}
12320
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12321/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12322 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12323 * the relevant part of the request line accordingly. Then it updates various
12324 * pointers to the next elements which were moved, and the total buffer length.
12325 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12326 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12327 * error, though this can be revisited when this code is finally exploited.
12328 *
12329 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12330 * query string and 3 to replace uri.
12331 *
12332 * In query string case, the mark question '?' must be set at the start of the
12333 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12334 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12335int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12336 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12337{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12338 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12339 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12340 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12341 int delta;
12342
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12343 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12344 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12345 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12346 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12347
12348 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12349 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12350 txn->req.sl.rq.m_l += delta;
12351 txn->req.sl.rq.u += delta;
12352 txn->req.sl.rq.v += delta;
12353 break;
12354
12355 case 1: // path
12356 cur_ptr = http_get_path(txn);
12357 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12358 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12359
12360 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12361 while (cur_end < s->req.buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l && *cur_end != '?')
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12362 cur_end++;
12363
12364 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12365 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12366 txn->req.sl.rq.u_l += delta;
12367 txn->req.sl.rq.v += delta;
12368 break;
12369
12370 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12371 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12372 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12373 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12374 while (cur_ptr < cur_end && *cur_ptr != '?')
12375 cur_ptr++;
12376
12377 /* skip the question mark or indicate that we must insert it
12378 * (but only if the format string is not empty then).
12379 */
12380 if (cur_ptr < cur_end)
12381 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12382 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12383 offset = 0;
12384
12385 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12386 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12387 txn->req.sl.rq.u_l += delta;
12388 txn->req.sl.rq.v += delta;
12389 break;
12390
12391 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12392 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12393 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12394
12395 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12396 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12397 txn->req.sl.rq.u_l += delta;
12398 txn->req.sl.rq.v += delta;
12399 break;
12400
12401 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12402 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12403 }
12404
12405 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12406 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12407 txn->req.sl.rq.l += delta;
12408 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12409 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12410 return 0;
12411}
12412
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12413/* This function replace the HTTP status code and the associated message. The
12414 * variable <status> contains the new status code. This function never fails.
12415 */
12416void http_set_status(unsigned int status, struct stream *s)
12417{
12418 struct http_txn *txn = s->txn;
12419 char *cur_ptr, *cur_end;
12420 int delta;
12421 char *res;
12422 int c_l;
12423 const char *msg;
12424 int msg_len;
12425
12426 chunk_reset(&trash);
12427
12428 res = ultoa_o(status, trash.str, trash.size);
12429 c_l = res - trash.str;
12430
12431 trash.str[c_l] = ' ';
12432 trash.len = c_l + 1;
12433
12434 msg = get_reason(status);
12435 msg_len = strlen(msg);
12436
12437 strncpy(&trash.str[trash.len], msg, trash.size - trash.len);
12438 trash.len += msg_len;
12439
12440 cur_ptr = s->res.buf->p + txn->rsp.sl.st.c;
12441 cur_end = s->res.buf->p + txn->rsp.sl.st.r + txn->rsp.sl.st.r_l;
12442
12443 /* commit changes and adjust message */
12444 delta = buffer_replace2(s->res.buf, cur_ptr, cur_end, trash.str, trash.len);
12445
12446 /* adjust res line offsets and lengths */
12447 txn->rsp.sl.st.r += c_l - txn->rsp.sl.st.c_l;
12448 txn->rsp.sl.st.c_l = c_l;
12449 txn->rsp.sl.st.r_l = msg_len;
12450
12451 delta = trash.len - (cur_end - cur_ptr);
12452 txn->rsp.sl.st.l += delta;
12453 txn->hdr_idx.v[0].len += delta;
12454 http_msg_move_end(&txn->rsp, delta);
12455}
12456
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12457/* This function executes one of the set-{method,path,query,uri} actions. It
12458 * builds a string in the trash from the specified format string. It finds
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12459 * the action to be performed in <http.action>, previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12460 * parse_set_req_line(). The replacement action is excuted by the function
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12461 * http_action_set_req_line(). It always returns ACT_RET_CONT. If an error
12462 * occurs the action is canceled, but the rule processing continue.
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12463 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12464enum act_return http_action_set_req_line(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12465 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12466{
12467 chunk_reset(&trash);
12468
12469 /* If we have to create a query string, prepare a '?'. */
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12470 if (rule->arg.http.action == 2)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12471 trash.str[trash.len++] = '?';
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12472 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.http.logfmt);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12473
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12474 http_replace_req_line(rule->arg.http.action, trash.str, trash.len, px, s);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12475 return ACT_RET_CONT;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12476}
12477
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12478/* This function is just a compliant action wrapper for "set-status". */
12479enum act_return action_http_set_status(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12480 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12481{
12482 http_set_status(rule->arg.status.code, s);
12483 return ACT_RET_CONT;
12484}
12485
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12486/* parse an http-request action among :
12487 * set-method
12488 * set-path
12489 * set-query
12490 * set-uri
12491 *
12492 * All of them accept a single argument of type string representing a log-format.
12493 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12494 * head, and p[2] to store the action as an int (0=method, 1=path, 2=query, 3=uri).
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12495 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12496 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12497enum act_parse_ret parse_set_req_line(const char **args, int *orig_arg, struct proxy *px,
12498 struct act_rule *rule, char **err)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12499{
12500 int cur_arg = *orig_arg;
12501
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12502 rule->action = ACT_CUSTOM;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12503
12504 switch (args[0][4]) {
12505 case 'm' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12506 rule->arg.http.action = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12507 rule->action_ptr = http_action_set_req_line;
12508 break;
12509 case 'p' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12510 rule->arg.http.action = 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12511 rule->action_ptr = http_action_set_req_line;
12512 break;
12513 case 'q' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12514 rule->arg.http.action = 2;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12515 rule->action_ptr = http_action_set_req_line;
12516 break;
12517 case 'u' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12518 rule->arg.http.action = 3;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12519 rule->action_ptr = http_action_set_req_line;
12520 break;
12521 default:
12522 memprintf(err, "internal error: unhandled action '%s'", args[0]);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12523 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12524 }
12525
12526 if (!*args[cur_arg] ||
12527 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12528 memprintf(err, "expects exactly 1 argument <format>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12529 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12530 }
12531
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12532 LIST_INIT(&rule->arg.http.logfmt);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12533 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]12534 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.http.logfmt, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]12535 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, err)) {
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]12536 return ACT_RET_PRS_ERR;
12537 }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12538
12539 (*orig_arg)++;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12540 return ACT_RET_PRS_OK;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12541}
12542
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12543/* parse set-status action:
12544 * This action accepts a single argument of type int representing
12545 * an http status code. It returns ACT_RET_PRS_OK on success,
12546 * ACT_RET_PRS_ERR on error.
12547 */
12548enum act_parse_ret parse_http_set_status(const char **args, int *orig_arg, struct proxy *px,
12549 struct act_rule *rule, char **err)
12550{
12551 char *error;
12552
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12553 rule->action = ACT_CUSTOM;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12554 rule->action_ptr = action_http_set_status;
12555
12556 /* Check if an argument is available */
12557 if (!*args[*orig_arg]) {
12558 memprintf(err, "expects exactly 1 argument <status>");
12559 return ACT_RET_PRS_ERR;
12560 }
12561
12562 /* convert status code as integer */
12563 rule->arg.status.code = strtol(args[*orig_arg], &error, 10);
12564 if (*error != '\0' || rule->arg.status.code < 100 || rule->arg.status.code > 999) {
12565 memprintf(err, "expects an integer status code between 100 and 999");
12566 return ACT_RET_PRS_ERR;
12567 }
12568
12569 (*orig_arg)++;
12570 return ACT_RET_PRS_OK;
12571}
12572
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12573/* This function executes the "capture" action. It executes a fetch expression,
12574 * turns the result into a string and puts it in a capture slot. It always
12575 * returns 1. If an error occurs the action is cancelled, but the rule
12576 * processing continues.
12577 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12578enum act_return http_action_req_capture(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12579 struct session *sess, struct stream *s, int flags)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12580{
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12581 struct sample *key;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12582 struct cap_hdr *h = rule->arg.cap.hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12583 char **cap = s->req_cap;
12584 int len;
12585
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12586 key = sample_fetch_as_type(s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, rule->arg.cap.expr, SMP_T_STR);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12587 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12588 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12589
12590 if (cap[h->index] == NULL)
12591 cap[h->index] = pool_alloc2(h->pool);
12592
12593 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12594 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12595
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12596 len = key->data.u.str.len;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12597 if (len > h->len)
12598 len = h->len;
12599
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12600 memcpy(cap[h->index], key->data.u.str.str, len);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12601 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12602 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12603}
12604
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12605/* This function executes the "capture" action and store the result in a
12606 * capture slot if exists. It executes a fetch expression, turns the result
12607 * into a string and puts it in a capture slot. It always returns 1. If an
12608 * error occurs the action is cancelled, but the rule processing continues.
12609 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12610enum act_return http_action_req_capture_by_id(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12611 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12612{
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12613 struct sample *key;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12614 struct cap_hdr *h;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12615 char **cap = s->req_cap;
12616 struct proxy *fe = strm_fe(s);
12617 int len;
12618 int i;
12619
12620 /* Look for the original configuration. */
12621 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12622 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12623 i--, h = h->next);
12624 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12625 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12626
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12627 key = sample_fetch_as_type(s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, rule->arg.capid.expr, SMP_T_STR);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12628 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12629 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12630
12631 if (cap[h->index] == NULL)
12632 cap[h->index] = pool_alloc2(h->pool);
12633
12634 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12635 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12636
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12637 len = key->data.u.str.len;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12638 if (len > h->len)
12639 len = h->len;
12640
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12641 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12642 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12643 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12644}
12645
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12646/* parse an "http-request capture" action. It takes a single argument which is
12647 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12648 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12649 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12650 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12651enum act_parse_ret parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px,
12652 struct act_rule *rule, char **err)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12653{
12654 struct sample_expr *expr;
12655 struct cap_hdr *hdr;
12656 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12657 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12658
12659 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12660 if (strcmp(args[cur_arg], "if") == 0 ||
12661 strcmp(args[cur_arg], "unless") == 0)
12662 break;
12663
12664 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12665 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12666 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12667 }
12668
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12669 cur_arg = *orig_arg;
12670 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12671 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12672 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12673
12674 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12675 memprintf(err,
12676 "fetch method '%s' extracts information from '%s', none of which is available here",
12677 args[cur_arg-1], sample_src_names(expr->fetch->use));
12678 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12679 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12680 }
12681
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12682 if (!args[cur_arg] || !*args[cur_arg]) {
12683 memprintf(err, "expects 'len or 'id'");
12684 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12685 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12686 }
12687
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12688 if (strcmp(args[cur_arg], "len") == 0) {
12689 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12690
12691 if (!(px->cap & PR_CAP_FE)) {
12692 memprintf(err, "proxy '%s' has no frontend capability", px->id);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12693 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12694 }
12695
12696 proxy->conf.args.ctx = ARGC_CAP;
12697
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12698 if (!args[cur_arg]) {
12699 memprintf(err, "missing length value");
12700 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12701 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12702 }
12703 /* we copy the table name for now, it will be resolved later */
12704 len = atoi(args[cur_arg]);
12705 if (len <= 0) {
12706 memprintf(err, "length must be > 0");
12707 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12708 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12709 }
12710 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12711
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12712 if (!len) {
12713 memprintf(err, "a positive 'len' argument is mandatory");
12714 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12715 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12716 }
12717
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]12718 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12719 hdr->next = px->req_cap;
12720 hdr->name = NULL; /* not a header capture */
12721 hdr->namelen = 0;
12722 hdr->len = len;
12723 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12724 hdr->index = px->nb_req_cap++;
12725
12726 px->req_cap = hdr;
12727 px->to_log |= LW_REQHDR;
12728
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12729 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12730 rule->action_ptr = http_action_req_capture;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12731 rule->arg.cap.expr = expr;
12732 rule->arg.cap.hdr = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12733 }
12734
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12735 else if (strcmp(args[cur_arg], "id") == 0) {
12736 int id;
12737 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12738
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12739 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12740
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12741 if (!args[cur_arg]) {
12742 memprintf(err, "missing id value");
12743 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12744 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12745 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12746
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12747 id = strtol(args[cur_arg], &error, 10);
12748 if (*error != '\0') {
12749 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12750 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12751 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12752 }
12753 cur_arg++;
12754
12755 proxy->conf.args.ctx = ARGC_CAP;
12756
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12757 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12758 rule->action_ptr = http_action_req_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12759 rule->arg.capid.expr = expr;
12760 rule->arg.capid.idx = id;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12761 }
12762
12763 else {
12764 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12765 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12766 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12767 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12768
12769 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12770 return ACT_RET_PRS_OK;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12771}
12772
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12773/* This function executes the "capture" action and store the result in a
12774 * capture slot if exists. It executes a fetch expression, turns the result
12775 * into a string and puts it in a capture slot. It always returns 1. If an
12776 * error occurs the action is cancelled, but the rule processing continues.
12777 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12778enum act_return http_action_res_capture_by_id(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12779 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12780{
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12781 struct sample *key;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12782 struct cap_hdr *h;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12783 char **cap = s->res_cap;
12784 struct proxy *fe = strm_fe(s);
12785 int len;
12786 int i;
12787
12788 /* Look for the original configuration. */
12789 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12790 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12791 i--, h = h->next);
12792 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12793 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12794
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12795 key = sample_fetch_as_type(s->be, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL, rule->arg.capid.expr, SMP_T_STR);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12796 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12797 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12798
12799 if (cap[h->index] == NULL)
12800 cap[h->index] = pool_alloc2(h->pool);
12801
12802 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12803 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12804
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12805 len = key->data.u.str.len;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12806 if (len > h->len)
12807 len = h->len;
12808
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12809 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12810 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12811 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12812}
12813
12814/* parse an "http-response capture" action. It takes a single argument which is
12815 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12816 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12817 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12818 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12819enum act_parse_ret parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px,
12820 struct act_rule *rule, char **err)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12821{
12822 struct sample_expr *expr;
12823 int cur_arg;
12824 int id;
12825 char *error;
12826
12827 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12828 if (strcmp(args[cur_arg], "if") == 0 ||
12829 strcmp(args[cur_arg], "unless") == 0)
12830 break;
12831
12832 if (cur_arg < *orig_arg + 3) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]12833 memprintf(err, "expects <expression> id <idx>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12834 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12835 }
12836
12837 cur_arg = *orig_arg;
12838 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12839 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12840 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12841
12842 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12843 memprintf(err,
12844 "fetch method '%s' extracts information from '%s', none of which is available here",
12845 args[cur_arg-1], sample_src_names(expr->fetch->use));
12846 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12847 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12848 }
12849
12850 if (!args[cur_arg] || !*args[cur_arg]) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]12851 memprintf(err, "expects 'id'");
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12852 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12853 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12854 }
12855
12856 if (strcmp(args[cur_arg], "id") != 0) {
12857 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12858 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12859 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12860 }
12861
12862 cur_arg++;
12863
12864 if (!args[cur_arg]) {
12865 memprintf(err, "missing id value");
12866 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12867 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12868 }
12869
12870 id = strtol(args[cur_arg], &error, 10);
12871 if (*error != '\0') {
12872 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12873 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12874 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12875 }
12876 cur_arg++;
12877
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12878 proxy->conf.args.ctx = ARGC_CAP;
12879
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12880 rule->action = ACT_CUSTOM;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12881 rule->action_ptr = http_action_res_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12882 rule->arg.capid.expr = expr;
12883 rule->arg.capid.idx = id;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12884
12885 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12886 return ACT_RET_PRS_OK;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12887}
12888
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12889/*
12890 * Return the struct http_req_action_kw associated to a keyword.
12891 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12892struct action_kw *action_http_req_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12893{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12894 return action_lookup(&http_req_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12895}
12896
12897/*
12898 * Return the struct http_res_action_kw associated to a keyword.
12899 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12900struct action_kw *action_http_res_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12901{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12902 return action_lookup(&http_res_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12903}
12904
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12905
12906/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
12907 * now.
12908 */
12909static int cli_parse_show_errors(char **args, struct appctx *appctx, void *private)
12910{
12911 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
12912 return 1;
12913
Willy Tarreau234ba2d2016-11-25 08:39:10 +0100[diff] [blame]12914 if (*args[2]) {
12915 struct proxy *px;
12916
12917 px = proxy_find_by_name(args[2], 0, 0);
12918 if (px)
12919 appctx->ctx.errors.iid = px->uuid;
12920 else
12921 appctx->ctx.errors.iid = atoi(args[2]);
12922
12923 if (!appctx->ctx.errors.iid) {
12924 appctx->ctx.cli.msg = "No such proxy.\n";
12925 appctx->st0 = CLI_ST_PRINT;
12926 return 1;
12927 }
12928 }
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12929 else
Willy Tarreau234ba2d2016-11-25 08:39:10 +0100[diff] [blame]12930 appctx->ctx.errors.iid = -1; // dump all proxies
12931
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]12932 appctx->ctx.errors.flag = 0;
12933 if (strcmp(args[3], "request") == 0)
12934 appctx->ctx.errors.flag |= 4; // ignore response
12935 else if (strcmp(args[3], "response") == 0)
12936 appctx->ctx.errors.flag |= 2; // ignore request
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12937 appctx->ctx.errors.px = NULL;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12938 return 0;
12939}
12940
12941/* This function dumps all captured errors onto the stream interface's
12942 * read buffer. It returns 0 if the output buffer is full and it needs
12943 * to be called again, otherwise non-zero.
12944 */
12945static int cli_io_handler_show_errors(struct appctx *appctx)
12946{
12947 struct stream_interface *si = appctx->owner;
12948 extern const char *monthname[12];
12949
12950 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
12951 return 1;
12952
12953 chunk_reset(&trash);
12954
12955 if (!appctx->ctx.errors.px) {
12956 /* the function had not been called yet, let's prepare the
12957 * buffer for a response.
12958 */
12959 struct tm tm;
12960
12961 get_localtime(date.tv_sec, &tm);
12962 chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
12963 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
12964 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
12965 error_snapshot_id);
12966
12967 if (bi_putchk(si_ic(si), &trash) == -1) {
12968 /* Socket buffer full. Let's try again later from the same point */
12969 si_applet_cant_put(si);
12970 return 0;
12971 }
12972
12973 appctx->ctx.errors.px = proxy;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12974 appctx->ctx.errors.bol = 0;
12975 appctx->ctx.errors.ptr = -1;
12976 }
12977
12978 /* we have two inner loops here, one for the proxy, the other one for
12979 * the buffer.
12980 */
12981 while (appctx->ctx.errors.px) {
12982 struct error_snapshot *es;
12983
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]12984 if ((appctx->ctx.errors.flag & 1) == 0) {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12985 es = &appctx->ctx.errors.px->invalid_req;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]12986 if (appctx->ctx.errors.flag & 2) // skip req
12987 goto next;
12988 }
12989 else {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12990 es = &appctx->ctx.errors.px->invalid_rep;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]12991 if (appctx->ctx.errors.flag & 4) // skip resp
12992 goto next;
12993 }
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12994
12995 if (!es->when.tv_sec)
12996 goto next;
12997
12998 if (appctx->ctx.errors.iid >= 0 &&
12999 appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
13000 es->oe->uuid != appctx->ctx.errors.iid)
13001 goto next;
13002
13003 if (appctx->ctx.errors.ptr < 0) {
13004 /* just print headers now */
13005
13006 char pn[INET6_ADDRSTRLEN];
13007 struct tm tm;
13008 int port;
13009
13010 get_localtime(es->when.tv_sec, &tm);
13011 chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
13012 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
13013 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
13014
13015 switch (addr_to_str(&es->src, pn, sizeof(pn))) {
13016 case AF_INET:
13017 case AF_INET6:
13018 port = get_host_port(&es->src);
13019 break;
13020 default:
13021 port = 0;
13022 }
13023
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13024 switch (appctx->ctx.errors.flag & 1) {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13025 case 0:
13026 chunk_appendf(&trash,
13027 " frontend %s (#%d): invalid request\n"
13028 " backend %s (#%d)",
13029 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
13030 (es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
13031 (es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
13032 break;
13033 case 1:
13034 chunk_appendf(&trash,
13035 " backend %s (#%d): invalid response\n"
13036 " frontend %s (#%d)",
13037 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
13038 es->oe->id, es->oe->uuid);
13039 break;
13040 }
13041
13042 chunk_appendf(&trash,
13043 ", server %s (#%d), event #%u\n"
13044 " src %s:%d, session #%d, session flags 0x%08x\n"
13045 " HTTP msg state %d, msg flags 0x%08x, tx flags 0x%08x\n"
13046 " HTTP chunk len %lld bytes, HTTP body len %lld bytes\n"
13047 " buffer flags 0x%08x, out %d bytes, total %lld bytes\n"
13048 " pending %d bytes, wrapping at %d, error at position %d:\n \n",
13049 es->srv ? es->srv->id : "<NONE>", es->srv ? es->srv->puid : -1,
13050 es->ev_id,
13051 pn, port, es->sid, es->s_flags,
13052 es->state, es->m_flags, es->t_flags,
13053 es->m_clen, es->m_blen,
13054 es->b_flags, es->b_out, es->b_tot,
13055 es->len, es->b_wrap, es->pos);
13056
13057 if (bi_putchk(si_ic(si), &trash) == -1) {
13058 /* Socket buffer full. Let's try again later from the same point */
13059 si_applet_cant_put(si);
13060 return 0;
13061 }
13062 appctx->ctx.errors.ptr = 0;
13063 appctx->ctx.errors.sid = es->sid;
13064 }
13065
13066 if (appctx->ctx.errors.sid != es->sid) {
13067 /* the snapshot changed while we were dumping it */
13068 chunk_appendf(&trash,
13069 " WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
13070 if (bi_putchk(si_ic(si), &trash) == -1) {
13071 si_applet_cant_put(si);
13072 return 0;
13073 }
13074 goto next;
13075 }
13076
13077 /* OK, ptr >= 0, so we have to dump the current line */
13078 while (es->buf && appctx->ctx.errors.ptr < es->len && appctx->ctx.errors.ptr < global.tune.bufsize) {
13079 int newptr;
13080 int newline;
13081
13082 newline = appctx->ctx.errors.bol;
13083 newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->len, &newline, appctx->ctx.errors.ptr);
13084 if (newptr == appctx->ctx.errors.ptr)
13085 return 0;
13086
13087 if (bi_putchk(si_ic(si), &trash) == -1) {
13088 /* Socket buffer full. Let's try again later from the same point */
13089 si_applet_cant_put(si);
13090 return 0;
13091 }
13092 appctx->ctx.errors.ptr = newptr;
13093 appctx->ctx.errors.bol = newline;
13094 };
13095 next:
13096 appctx->ctx.errors.bol = 0;
13097 appctx->ctx.errors.ptr = -1;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13098 appctx->ctx.errors.flag ^= 1;
13099 if (!(appctx->ctx.errors.flag & 1))
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13100 appctx->ctx.errors.px = appctx->ctx.errors.px->next;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13101 }
13102
13103 /* dump complete */
13104 return 1;
13105}
13106
13107/* register cli keywords */
13108static struct cli_kw_list cli_kws = {{ },{
13109 { { "show", "errors", NULL },
13110 "show errors : report last request and response errors for each proxy",
13111 cli_parse_show_errors, cli_io_handler_show_errors, NULL,
13112 },
13113 {{},}
13114}};
13115
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13116/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13117/* All supported ACL keywords must be declared here. */
13118/************************************************************************/
13119
13120/* Note: must not be declared <const> as its list will be overwritten.
13121 * Please take care of keeping this list alphabetically sorted.
13122 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]13123static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13124 { "base", "base", PAT_MATCH_STR },
13125 { "base_beg", "base", PAT_MATCH_BEG },
13126 { "base_dir", "base", PAT_MATCH_DIR },
13127 { "base_dom", "base", PAT_MATCH_DOM },
13128 { "base_end", "base", PAT_MATCH_END },
13129 { "base_len", "base", PAT_MATCH_LEN },
13130 { "base_reg", "base", PAT_MATCH_REG },
13131 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]13132
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13133 { "cook", "req.cook", PAT_MATCH_STR },
13134 { "cook_beg", "req.cook", PAT_MATCH_BEG },
13135 { "cook_dir", "req.cook", PAT_MATCH_DIR },
13136 { "cook_dom", "req.cook", PAT_MATCH_DOM },
13137 { "cook_end", "req.cook", PAT_MATCH_END },
13138 { "cook_len", "req.cook", PAT_MATCH_LEN },
13139 { "cook_reg", "req.cook", PAT_MATCH_REG },
13140 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13141
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13142 { "hdr", "req.hdr", PAT_MATCH_STR },
13143 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
13144 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
13145 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
13146 { "hdr_end", "req.hdr", PAT_MATCH_END },
13147 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
13148 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
13149 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13150
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13151 /* these two declarations uses strings with list storage (in place
13152 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
13153 * and delete functions are relative to the list management. The parse
13154 * and match method are related to the corresponding fetch methods. This
13155 * is very particular ACL declaration mode.
13156 */
13157 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
13158 { "method", NULL, PAT_MATCH_STR, pat_parse_meth, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_meth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13159
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13160 { "path", "path", PAT_MATCH_STR },
13161 { "path_beg", "path", PAT_MATCH_BEG },
13162 { "path_dir", "path", PAT_MATCH_DIR },
13163 { "path_dom", "path", PAT_MATCH_DOM },
13164 { "path_end", "path", PAT_MATCH_END },
13165 { "path_len", "path", PAT_MATCH_LEN },
13166 { "path_reg", "path", PAT_MATCH_REG },
13167 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13168
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13169 { "req_ver", "req.ver", PAT_MATCH_STR },
13170 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13171
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13172 { "scook", "res.cook", PAT_MATCH_STR },
13173 { "scook_beg", "res.cook", PAT_MATCH_BEG },
13174 { "scook_dir", "res.cook", PAT_MATCH_DIR },
13175 { "scook_dom", "res.cook", PAT_MATCH_DOM },
13176 { "scook_end", "res.cook", PAT_MATCH_END },
13177 { "scook_len", "res.cook", PAT_MATCH_LEN },
13178 { "scook_reg", "res.cook", PAT_MATCH_REG },
13179 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13180
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13181 { "shdr", "res.hdr", PAT_MATCH_STR },
13182 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
13183 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
13184 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
13185 { "shdr_end", "res.hdr", PAT_MATCH_END },
13186 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
13187 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
13188 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13189
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13190 { "url", "url", PAT_MATCH_STR },
13191 { "url_beg", "url", PAT_MATCH_BEG },
13192 { "url_dir", "url", PAT_MATCH_DIR },
13193 { "url_dom", "url", PAT_MATCH_DOM },
13194 { "url_end", "url", PAT_MATCH_END },
13195 { "url_len", "url", PAT_MATCH_LEN },
13196 { "url_reg", "url", PAT_MATCH_REG },
13197 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13198
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13199 { "urlp", "urlp", PAT_MATCH_STR },
13200 { "urlp_beg", "urlp", PAT_MATCH_BEG },
13201 { "urlp_dir", "urlp", PAT_MATCH_DIR },
13202 { "urlp_dom", "urlp", PAT_MATCH_DOM },
13203 { "urlp_end", "urlp", PAT_MATCH_END },
13204 { "urlp_len", "urlp", PAT_MATCH_LEN },
13205 { "urlp_reg", "urlp", PAT_MATCH_REG },
13206 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13207
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]13208 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13209}};
13210
13211/************************************************************************/
13212/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13213/************************************************************************/
13214/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]13215static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13216 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13217 { "base32", smp_fetch_base32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13218 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
13219
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]13220 /* capture are allocated and are permanent in the stream */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13221 { "capture.req.hdr", smp_fetch_capture_header_req, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRQHP },
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]13222
13223 /* retrieve these captures from the HTTP logs */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13224 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
13225 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
13226 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]13227
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13228 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
13229 { "capture.res.ver", smp_fetch_capture_res_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]13230
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13231 /* cookie is valid in both directions (eg: for "stick ...") but cook*
13232 * are only here to match the ACL's name, are request-only and are used
13233 * for ACL compatibility only.
13234 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13235 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13236 { "cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV|SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13237 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
13238 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13239
13240 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
13241 * only here to match the ACL's name, are request-only and are used for
13242 * ACL compatibility only.
13243 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13244 { "hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV|SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13245 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13246 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13247 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13248
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]13249 { "http_auth", smp_fetch_http_auth, ARG1(1,USR), NULL, SMP_T_BOOL, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13250 { "http_auth_group", smp_fetch_http_auth_grp, ARG1(1,USR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13251 { "http_first_req", smp_fetch_http_first_req, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHP },
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]13252 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13253 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]13254 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13255
13256 /* HTTP protocol on the request path */
13257 { "req.proto_http", smp_fetch_proto_http, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHP },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13258 { "req_proto_http", smp_fetch_proto_http, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHP },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13259
13260 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13261 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
13262 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13263
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]13264 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13265 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
13266 { "req.body_size", smp_fetch_body_size, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]13267 { "req.body_param", smp_fetch_body_param, ARG1(0,STR), NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]13268
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13269 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13270 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
13271 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13272
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13273 /* explicit req.{cook,hdr} are used to force the fetch direction to be request-only */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13274 { "req.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13275 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
13276 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13277
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13278 { "req.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13279 { "req.fhdr_cnt", smp_fetch_fhdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13280 { "req.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13281 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13282 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]13283 { "req.hdr_names", smp_fetch_hdr_names, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13284 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13285
13286 /* explicit req.{cook,hdr} are used to force the fetch direction to be response-only */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13287 { "res.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13288 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
13289 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13290
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13291 { "res.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13292 { "res.fhdr_cnt", smp_fetch_fhdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13293 { "res.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13294 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13295 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]13296 { "res.hdr_names", smp_fetch_hdr_names, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13297 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13298
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13299 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13300 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13301 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
13302 { "scook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13303 { "set-cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV }, /* deprecated */
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13304
13305 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13306 { "shdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13307 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13308 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13309 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13310
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13311 { "status", smp_fetch_stcode, 0, NULL, SMP_T_SINT, SMP_USE_HRSHP },
Thierry Fournier0e00dca2016-04-07 15:47:40 +0200[diff] [blame]13312 { "unique-id", smp_fetch_uniqueid, 0, NULL, SMP_T_STR, SMP_SRC_L4SRV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13313 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13314 { "url32", smp_fetch_url32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]13315 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13316 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13317 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]13318 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13319 { "urlp" , smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13320 { "urlp_val", smp_fetch_url_param_val, ARG2(0,STR,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13321 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13322}};
13323
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13324
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13325/************************************************************************/
13326/* All supported converter keywords must be declared here. */
13327/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13328/* Note: must not be declared <const> as its list will be overwritten */
13329static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13330 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_SINT, SMP_T_STR},
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]13331 { "language", sample_conv_q_prefered, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_T_STR},
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13332 { "capture-req", smp_conv_req_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
13333 { "capture-res", smp_conv_res_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]13334 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13335 { NULL, NULL, 0, 0, 0 },
13336}};
13337
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]13338
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13339/************************************************************************/
13340/* All supported http-request action keywords must be declared here. */
13341/************************************************************************/
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]13342struct action_kw_list http_req_actions = {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13343 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]13344 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13345 { "set-method", parse_set_req_line },
13346 { "set-path", parse_set_req_line },
13347 { "set-query", parse_set_req_line },
13348 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]13349 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13350 }
13351};
13352
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]13353struct action_kw_list http_res_actions = {
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13354 .kw = {
13355 { "capture", parse_http_res_capture },
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]13356 { "set-status", parse_http_set_status },
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13357 { NULL, NULL }
13358 }
13359};
13360
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13361__attribute__((constructor))
13362static void __http_protocol_init(void)
13363{
13364 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]13365 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13366 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13367 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13368 http_res_keywords_register(&http_res_actions);
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13369 cli_register_kw(&cli_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13370}
13371
13372
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]13373/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]13374 * Local variables:
13375 * c-indent-level: 8
13376 * c-basic-offset: 8
13377 * End:
13378 */