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git01.mediatek.com / haproxy / 46c72551f36b982d117cf89537430699305a3c15 / . / src / proto_http.c
blob: c81409f39f03a872041c94a9cc7a0a2ac66ab6cf [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 Tarreau0da5b3b2017-09-21 09:30:46 +0200[diff] [blame]60#include <proto/h1.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]61#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]62#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]63#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]64#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]65#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]66#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]67#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]68#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]69#include <proto/server.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]70#include <proto/stream.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]71#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]72#include <proto/task.h>
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]73#include <proto/pattern.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]74#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]75
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]76const char HTTP_100[] =
77 "HTTP/1.1 100 Continue\r\n\r\n";
78
79const struct chunk http_100_chunk = {
80 .str = (char *)&HTTP_100,
81 .len = sizeof(HTTP_100)-1
82};
83
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]84/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]85const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]86 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]87 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]88 "Location: "; /* not terminated since it will be concatenated with the URL */
89
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]90const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]91 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]92 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]93 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]94 "Location: "; /* not terminated since it will be concatenated with the URL */
95
96/* same as 302 except that the browser MUST retry with the GET method */
97const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]98 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]99 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]100 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]101 "Location: "; /* not terminated since it will be concatenated with the URL */
102
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]103
104/* same as 302 except that the browser MUST retry with the same method */
105const char *HTTP_307 =
106 "HTTP/1.1 307 Temporary Redirect\r\n"
107 "Cache-Control: no-cache\r\n"
108 "Content-length: 0\r\n"
109 "Location: "; /* not terminated since it will be concatenated with the URL */
110
111/* same as 301 except that the browser MUST retry with the same method */
112const char *HTTP_308 =
113 "HTTP/1.1 308 Permanent Redirect\r\n"
114 "Content-length: 0\r\n"
115 "Location: "; /* not terminated since it will be concatenated with the URL */
116
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]117/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
118const char *HTTP_401_fmt =
119 "HTTP/1.0 401 Unauthorized\r\n"
120 "Cache-Control: no-cache\r\n"
121 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]122 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]123 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
124 "\r\n"
125 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
126
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]127const char *HTTP_407_fmt =
128 "HTTP/1.0 407 Unauthorized\r\n"
129 "Cache-Control: no-cache\r\n"
130 "Connection: close\r\n"
131 "Content-Type: text/html\r\n"
132 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
133 "\r\n"
Godbach1f1fae62014-12-17 16:32:05 +0800[diff] [blame]134 "<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]135
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]136
137const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]138 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]139 [HTTP_ERR_400] = 400,
140 [HTTP_ERR_403] = 403,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]141 [HTTP_ERR_405] = 405,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]142 [HTTP_ERR_408] = 408,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]143 [HTTP_ERR_429] = 429,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]144 [HTTP_ERR_500] = 500,
145 [HTTP_ERR_502] = 502,
146 [HTTP_ERR_503] = 503,
147 [HTTP_ERR_504] = 504,
148};
149
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]150static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]151 [HTTP_ERR_200] =
152 "HTTP/1.0 200 OK\r\n"
153 "Cache-Control: no-cache\r\n"
154 "Connection: close\r\n"
155 "Content-Type: text/html\r\n"
156 "\r\n"
157 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
158
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]159 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]160 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]161 "Cache-Control: no-cache\r\n"
162 "Connection: close\r\n"
163 "Content-Type: text/html\r\n"
164 "\r\n"
165 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
166
167 [HTTP_ERR_403] =
168 "HTTP/1.0 403 Forbidden\r\n"
169 "Cache-Control: no-cache\r\n"
170 "Connection: close\r\n"
171 "Content-Type: text/html\r\n"
172 "\r\n"
173 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
174
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]175 [HTTP_ERR_405] =
176 "HTTP/1.0 405 Method Not Allowed\r\n"
177 "Cache-Control: no-cache\r\n"
178 "Connection: close\r\n"
179 "Content-Type: text/html\r\n"
180 "\r\n"
181 "<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",
182
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]183 [HTTP_ERR_408] =
184 "HTTP/1.0 408 Request Time-out\r\n"
185 "Cache-Control: no-cache\r\n"
186 "Connection: close\r\n"
187 "Content-Type: text/html\r\n"
188 "\r\n"
189 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
190
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]191 [HTTP_ERR_429] =
192 "HTTP/1.0 429 Too Many Requests\r\n"
193 "Cache-Control: no-cache\r\n"
194 "Connection: close\r\n"
195 "Content-Type: text/html\r\n"
196 "\r\n"
197 "<html><body><h1>429 Too Many Requests</h1>\nYou have sent too many requests in a given amount of time.\n</body></html>\n",
198
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]199 [HTTP_ERR_500] =
Jarno Huuskonen16ad94a2017-01-09 14:17:10 +0200[diff] [blame]200 "HTTP/1.0 500 Internal Server Error\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]201 "Cache-Control: no-cache\r\n"
202 "Connection: close\r\n"
203 "Content-Type: text/html\r\n"
204 "\r\n"
Jarno Huuskonen16ad94a2017-01-09 14:17:10 +0200[diff] [blame]205 "<html><body><h1>500 Internal Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]206
207 [HTTP_ERR_502] =
208 "HTTP/1.0 502 Bad Gateway\r\n"
209 "Cache-Control: no-cache\r\n"
210 "Connection: close\r\n"
211 "Content-Type: text/html\r\n"
212 "\r\n"
213 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
214
215 [HTTP_ERR_503] =
216 "HTTP/1.0 503 Service Unavailable\r\n"
217 "Cache-Control: no-cache\r\n"
218 "Connection: close\r\n"
219 "Content-Type: text/html\r\n"
220 "\r\n"
221 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
222
223 [HTTP_ERR_504] =
224 "HTTP/1.0 504 Gateway Time-out\r\n"
225 "Cache-Control: no-cache\r\n"
226 "Connection: close\r\n"
227 "Content-Type: text/html\r\n"
228 "\r\n"
229 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
230
231};
232
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]233/* status codes available for the stats admin page (strictly 4 chars length) */
234const char *stat_status_codes[STAT_STATUS_SIZE] = {
235 [STAT_STATUS_DENY] = "DENY",
236 [STAT_STATUS_DONE] = "DONE",
237 [STAT_STATUS_ERRP] = "ERRP",
238 [STAT_STATUS_EXCD] = "EXCD",
239 [STAT_STATUS_NONE] = "NONE",
240 [STAT_STATUS_PART] = "PART",
241 [STAT_STATUS_UNKN] = "UNKN",
242};
243
244
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]245/* List head of all known action keywords for "http-request" */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]246struct action_kw_list http_req_keywords = {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]247 .list = LIST_HEAD_INIT(http_req_keywords.list)
248};
249
250/* List head of all known action keywords for "http-response" */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]251struct action_kw_list http_res_keywords = {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]252 .list = LIST_HEAD_INIT(http_res_keywords.list)
253};
254
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]255/* We must put the messages here since GCC cannot initialize consts depending
256 * on strlen().
257 */
258struct chunk http_err_chunks[HTTP_ERR_SIZE];
259
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]260/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
261static struct hdr_ctx static_hdr_ctx;
262
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]263#define FD_SETS_ARE_BITFIELDS
264#ifdef FD_SETS_ARE_BITFIELDS
265/*
266 * This map is used with all the FD_* macros to check whether a particular bit
267 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
268 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
269 * byte should be encoded. Be careful to always pass bytes from 0 to 255
270 * exclusively to the macros.
271 */
272fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
273fd_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]274fd_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]275
276#else
277#error "Check if your OS uses bitfields for fd_sets"
278#endif
279
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]280static 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]281
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]282static inline int http_msg_forward_body(struct stream *s, struct http_msg *msg);
283static inline int http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]284
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]285/* This function returns a reason associated with the HTTP status.
286 * This function never fails, a message is always returned.
287 */
288const char *get_reason(unsigned int status)
289{
290 switch (status) {
291 case 100: return "Continue";
292 case 101: return "Switching Protocols";
293 case 102: return "Processing";
294 case 200: return "OK";
295 case 201: return "Created";
296 case 202: return "Accepted";
297 case 203: return "Non-Authoritative Information";
298 case 204: return "No Content";
299 case 205: return "Reset Content";
300 case 206: return "Partial Content";
301 case 207: return "Multi-Status";
302 case 210: return "Content Different";
303 case 226: return "IM Used";
304 case 300: return "Multiple Choices";
305 case 301: return "Moved Permanently";
306 case 302: return "Moved Temporarily";
307 case 303: return "See Other";
308 case 304: return "Not Modified";
309 case 305: return "Use Proxy";
310 case 307: return "Temporary Redirect";
311 case 308: return "Permanent Redirect";
312 case 310: return "Too many Redirects";
313 case 400: return "Bad Request";
314 case 401: return "Unauthorized";
315 case 402: return "Payment Required";
316 case 403: return "Forbidden";
317 case 404: return "Not Found";
318 case 405: return "Method Not Allowed";
319 case 406: return "Not Acceptable";
320 case 407: return "Proxy Authentication Required";
321 case 408: return "Request Time-out";
322 case 409: return "Conflict";
323 case 410: return "Gone";
324 case 411: return "Length Required";
325 case 412: return "Precondition Failed";
326 case 413: return "Request Entity Too Large";
327 case 414: return "Request-URI Too Long";
328 case 415: return "Unsupported Media Type";
329 case 416: return "Requested range unsatisfiable";
330 case 417: return "Expectation failed";
331 case 418: return "I'm a teapot";
332 case 422: return "Unprocessable entity";
333 case 423: return "Locked";
334 case 424: return "Method failure";
335 case 425: return "Unordered Collection";
336 case 426: return "Upgrade Required";
337 case 428: return "Precondition Required";
338 case 429: return "Too Many Requests";
339 case 431: return "Request Header Fields Too Large";
340 case 449: return "Retry With";
341 case 450: return "Blocked by Windows Parental Controls";
342 case 451: return "Unavailable For Legal Reasons";
343 case 456: return "Unrecoverable Error";
344 case 499: return "client has closed connection";
345 case 500: return "Internal Server Error";
346 case 501: return "Not Implemented";
Jarno Huuskonen59af2df2016-12-28 10:49:01 +0200[diff] [blame]347 case 502: return "Bad Gateway or Proxy Error";
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]348 case 503: return "Service Unavailable";
349 case 504: return "Gateway Time-out";
350 case 505: return "HTTP Version not supported";
351 case 506: return "Variant also negociate";
352 case 507: return "Insufficient storage";
353 case 508: return "Loop detected";
354 case 509: return "Bandwidth Limit Exceeded";
355 case 510: return "Not extended";
356 case 511: return "Network authentication required";
357 case 520: return "Web server is returning an unknown error";
358 default:
359 switch (status) {
360 case 100 ... 199: return "Informational";
361 case 200 ... 299: return "Success";
362 case 300 ... 399: return "Redirection";
363 case 400 ... 499: return "Client Error";
364 case 500 ... 599: return "Server Error";
365 default: return "Other";
366 }
367 }
368}
369
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]370/* This function returns HTTP_ERR_<num> (enum) matching http status code.
371 * Returned value should match codes from http_err_codes.
372 */
373static const int http_get_status_idx(unsigned int status)
374{
375 switch (status) {
376 case 200: return HTTP_ERR_200;
377 case 400: return HTTP_ERR_400;
378 case 403: return HTTP_ERR_403;
379 case 405: return HTTP_ERR_405;
380 case 408: return HTTP_ERR_408;
381 case 429: return HTTP_ERR_429;
382 case 500: return HTTP_ERR_500;
383 case 502: return HTTP_ERR_502;
384 case 503: return HTTP_ERR_503;
385 case 504: return HTTP_ERR_504;
386 default: return HTTP_ERR_500;
387 }
388}
389
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]390void init_proto_http()
391{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]392 int i;
393 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]394 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]395
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]396 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
397 if (!http_err_msgs[msg]) {
398 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
399 abort();
400 }
401
402 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
403 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
404 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]405
406 /* initialize the log header encoding map : '{|}"#' should be encoded with
407 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
408 * URL encoding only requires '"', '#' to be encoded as well as non-
409 * printable characters above.
410 */
411 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
412 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]413 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]414 for (i = 0; i < 32; i++) {
415 FD_SET(i, hdr_encode_map);
416 FD_SET(i, url_encode_map);
417 }
418 for (i = 127; i < 256; i++) {
419 FD_SET(i, hdr_encode_map);
420 FD_SET(i, url_encode_map);
421 }
422
423 tmp = "\"#{|}";
424 while (*tmp) {
425 FD_SET(*tmp, hdr_encode_map);
426 tmp++;
427 }
428
429 tmp = "\"#";
430 while (*tmp) {
431 FD_SET(*tmp, url_encode_map);
432 tmp++;
433 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]434
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]435 /* initialize the http header encoding map. The draft httpbis define the
436 * header content as:
437 *
438 * HTTP-message = start-line
439 * *( header-field CRLF )
440 * CRLF
441 * [ message-body ]
442 * header-field = field-name ":" OWS field-value OWS
443 * field-value = *( field-content / obs-fold )
444 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
445 * obs-fold = CRLF 1*( SP / HTAB )
446 * field-vchar = VCHAR / obs-text
447 * VCHAR = %x21-7E
448 * obs-text = %x80-FF
449 *
450 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
451 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
452 * "obs-fold" is volontary forgotten because haproxy remove this.
453 */
454 memset(http_encode_map, 0, sizeof(http_encode_map));
455 for (i = 0x00; i <= 0x08; i++)
456 FD_SET(i, http_encode_map);
457 for (i = 0x0a; i <= 0x1f; i++)
458 FD_SET(i, http_encode_map);
459 FD_SET(0x7f, http_encode_map);
460
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]461 /* memory allocations */
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]462 pool2_http_txn = create_pool("http_txn", sizeof(struct http_txn), MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]463 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]464}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]465
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]466/*
467 * We have 26 list of methods (1 per first letter), each of which can have
468 * up to 3 entries (2 valid, 1 null).
469 */
470struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]471 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]472 int len;
473 const char text[8];
474};
475
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]476const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]477 ['C' - 'A'] = {
478 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
479 },
480 ['D' - 'A'] = {
481 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
482 },
483 ['G' - 'A'] = {
484 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
485 },
486 ['H' - 'A'] = {
487 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
488 },
Christopher Fauletd57ad642015-07-31 14:26:57 +0200[diff] [blame]489 ['O' - 'A'] = {
490 [0] = { .meth = HTTP_METH_OPTIONS , .len=7, .text="OPTIONS" },
491 },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]492 ['P' - 'A'] = {
493 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
494 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
495 },
496 ['T' - 'A'] = {
497 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
498 },
499 /* rest is empty like this :
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]500 * [0] = { .meth = HTTP_METH_OTHER , .len=0, .text="" },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]501 */
502};
503
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]504const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]505 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
506 [HTTP_METH_GET] = { "GET", 3 },
507 [HTTP_METH_HEAD] = { "HEAD", 4 },
508 [HTTP_METH_POST] = { "POST", 4 },
509 [HTTP_METH_PUT] = { "PUT", 3 },
510 [HTTP_METH_DELETE] = { "DELETE", 6 },
511 [HTTP_METH_TRACE] = { "TRACE", 5 },
512 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
513};
514
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]515/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]516 * Adds a header and its CRLF at the tail of the message's buffer, just before
517 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]518 * The header is also automatically added to the index <hdr_idx>, and the end
519 * of headers is automatically adjusted. The number of bytes added is returned
520 * on success, otherwise <0 is returned indicating an error.
521 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]522int 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]523{
524 int bytes, len;
525
526 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]527 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]528 if (!bytes)
529 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]530 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]531 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
532}
533
534/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]535 * Adds a header and its CRLF at the tail of the message's buffer, just before
536 * 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]537 * the buffer is only opened and the space reserved, but nothing is copied.
538 * The header is also automatically added to the index <hdr_idx>, and the end
539 * of headers is automatically adjusted. The number of bytes added is returned
540 * on success, otherwise <0 is returned indicating an error.
541 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]542int http_header_add_tail2(struct http_msg *msg,
543 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]544{
545 int bytes;
546
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]547 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]548 if (!bytes)
549 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]550 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]551 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
552}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]553
554/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]555 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
556 * If so, returns the position of the first non-space character relative to
557 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
558 * to return a pointer to the place after the first space. Returns 0 if the
559 * header name does not match. Checks are case-insensitive.
560 */
561int http_header_match2(const char *hdr, const char *end,
562 const char *name, int len)
563{
564 const char *val;
565
566 if (hdr + len >= end)
567 return 0;
568 if (hdr[len] != ':')
569 return 0;
570 if (strncasecmp(hdr, name, len) != 0)
571 return 0;
572 val = hdr + len + 1;
573 while (val < end && HTTP_IS_SPHT(*val))
574 val++;
575 if ((val >= end) && (len + 2 <= end - hdr))
576 return len + 2; /* we may replace starting from second space */
577 return val - hdr;
578}
579
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]580/* Find the first or next occurrence of header <name> in message buffer <sol>
581 * using headers index <idx>, and return it in the <ctx> structure. This
582 * structure holds everything necessary to use the header and find next
583 * occurrence. If its <idx> member is 0, the header is searched from the
584 * beginning. Otherwise, the next occurrence is returned. The function returns
585 * 1 when it finds a value, and 0 when there is no more. It is very similar to
586 * http_find_header2() except that it is designed to work with full-line headers
587 * whose comma is not a delimiter but is part of the syntax. As a special case,
588 * if ctx->val is NULL when searching for a new values of a header, the current
589 * header is rescanned. This allows rescanning after a header deletion.
590 */
591int http_find_full_header2(const char *name, int len,
592 char *sol, struct hdr_idx *idx,
593 struct hdr_ctx *ctx)
594{
595 char *eol, *sov;
596 int cur_idx, old_idx;
597
598 cur_idx = ctx->idx;
599 if (cur_idx) {
600 /* We have previously returned a header, let's search another one */
601 sol = ctx->line;
602 eol = sol + idx->v[cur_idx].len;
603 goto next_hdr;
604 }
605
606 /* first request for this header */
607 sol += hdr_idx_first_pos(idx);
608 old_idx = 0;
609 cur_idx = hdr_idx_first_idx(idx);
610 while (cur_idx) {
611 eol = sol + idx->v[cur_idx].len;
612
613 if (len == 0) {
614 /* No argument was passed, we want any header.
615 * To achieve this, we simply build a fake request. */
616 while (sol + len < eol && sol[len] != ':')
617 len++;
618 name = sol;
619 }
620
621 if ((len < eol - sol) &&
622 (sol[len] == ':') &&
623 (strncasecmp(sol, name, len) == 0)) {
624 ctx->del = len;
625 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]626 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]627 sov++;
628
629 ctx->line = sol;
630 ctx->prev = old_idx;
631 ctx->idx = cur_idx;
632 ctx->val = sov - sol;
633 ctx->tws = 0;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]634 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]635 eol--;
636 ctx->tws++;
637 }
638 ctx->vlen = eol - sov;
639 return 1;
640 }
641 next_hdr:
642 sol = eol + idx->v[cur_idx].cr + 1;
643 old_idx = cur_idx;
644 cur_idx = idx->v[cur_idx].next;
645 }
646 return 0;
647}
648
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]649/* Find the first or next header field in message buffer <sol> using headers
650 * index <idx>, and return it in the <ctx> structure. This structure holds
651 * everything necessary to use the header and find next occurrence. If its
652 * <idx> member is 0, the first header is retrieved. Otherwise, the next
653 * occurrence is returned. The function returns 1 when it finds a value, and
654 * 0 when there is no more. It is equivalent to http_find_full_header2() with
655 * no header name.
656 */
657int http_find_next_header(char *sol, struct hdr_idx *idx, struct hdr_ctx *ctx)
658{
659 char *eol, *sov;
660 int cur_idx, old_idx;
661 int len;
662
663 cur_idx = ctx->idx;
664 if (cur_idx) {
665 /* We have previously returned a header, let's search another one */
666 sol = ctx->line;
667 eol = sol + idx->v[cur_idx].len;
668 goto next_hdr;
669 }
670
671 /* first request for this header */
672 sol += hdr_idx_first_pos(idx);
673 old_idx = 0;
674 cur_idx = hdr_idx_first_idx(idx);
675 while (cur_idx) {
676 eol = sol + idx->v[cur_idx].len;
677
678 len = 0;
679 while (1) {
680 if (len >= eol - sol)
681 goto next_hdr;
682 if (sol[len] == ':')
683 break;
684 len++;
685 }
686
687 ctx->del = len;
688 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]689 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]690 sov++;
691
692 ctx->line = sol;
693 ctx->prev = old_idx;
694 ctx->idx = cur_idx;
695 ctx->val = sov - sol;
696 ctx->tws = 0;
697
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]698 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]699 eol--;
700 ctx->tws++;
701 }
702 ctx->vlen = eol - sov;
703 return 1;
704
705 next_hdr:
706 sol = eol + idx->v[cur_idx].cr + 1;
707 old_idx = cur_idx;
708 cur_idx = idx->v[cur_idx].next;
709 }
710 return 0;
711}
712
Lukas Tribus23953682017-04-28 13:24:30 +0000[diff] [blame]713/* Find the end of the header value contained between <s> and <e>. See RFC7230,
714 * par 3.2 for more information. Note that it requires a valid header to return
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]715 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]716 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]717char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]718{
719 int quoted, qdpair;
720
721 quoted = qdpair = 0;
Willy Tarreaue6d9c212016-11-05 18:23:38 +0100[diff] [blame]722
723#if defined(__x86_64__) || \
724 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
725 defined(__ARM_ARCH_7A__)
726 /* speedup: skip everything not a comma nor a double quote */
727 for (; s <= e - sizeof(int); s += sizeof(int)) {
728 unsigned int c = *(int *)s; // comma
729 unsigned int q = c; // quote
730
731 c ^= 0x2c2c2c2c; // contains one zero on a comma
732 q ^= 0x22222222; // contains one zero on a quote
733
734 c = (c - 0x01010101) & ~c; // contains 0x80 below a comma
735 q = (q - 0x01010101) & ~q; // contains 0x80 below a quote
736
737 if ((c | q) & 0x80808080)
738 break; // found a comma or a quote
739 }
740#endif
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]741 for (; s < e; s++) {
742 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]743 else if (quoted) {
744 if (*s == '\\') qdpair = 1;
745 else if (*s == '"') quoted = 0;
746 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]747 else if (*s == '"') quoted = 1;
748 else if (*s == ',') return s;
749 }
750 return s;
751}
752
753/* Find the first or next occurrence of header <name> in message buffer <sol>
754 * using headers index <idx>, and return it in the <ctx> structure. This
755 * structure holds everything necessary to use the header and find next
756 * occurrence. If its <idx> member is 0, the header is searched from the
757 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]758 * 1 when it finds a value, and 0 when there is no more. It is designed to work
759 * with headers defined as comma-separated lists. As a special case, if ctx->val
760 * is NULL when searching for a new values of a header, the current header is
761 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]762 */
763int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]764 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]765 struct hdr_ctx *ctx)
766{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]767 char *eol, *sov;
768 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]769
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]770 cur_idx = ctx->idx;
771 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]772 /* We have previously returned a value, let's search
773 * another one on the same line.
774 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]775 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]776 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]777 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]778 eol = sol + idx->v[cur_idx].len;
779
780 if (sov >= eol)
781 /* no more values in this header */
782 goto next_hdr;
783
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]784 /* values remaining for this header, skip the comma but save it
785 * for later use (eg: for header deletion).
786 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]787 sov++;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]788 while (sov < eol && HTTP_IS_LWS((*sov)))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]789 sov++;
790
791 goto return_hdr;
792 }
793
794 /* first request for this header */
795 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]796 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]797 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]798 while (cur_idx) {
799 eol = sol + idx->v[cur_idx].len;
800
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]801 if (len == 0) {
802 /* No argument was passed, we want any header.
803 * To achieve this, we simply build a fake request. */
804 while (sol + len < eol && sol[len] != ':')
805 len++;
806 name = sol;
807 }
808
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]809 if ((len < eol - sol) &&
810 (sol[len] == ':') &&
811 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]812 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]813 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]814 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]815 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]816
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]817 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]818 ctx->prev = old_idx;
819 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]820 ctx->idx = cur_idx;
821 ctx->val = sov - sol;
822
823 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]824 ctx->tws = 0;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]825 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]826 eol--;
827 ctx->tws++;
828 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]829 ctx->vlen = eol - sov;
830 return 1;
831 }
832 next_hdr:
833 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]834 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]835 cur_idx = idx->v[cur_idx].next;
836 }
837 return 0;
838}
839
840int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]841 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]842 struct hdr_ctx *ctx)
843{
844 return http_find_header2(name, strlen(name), sol, idx, ctx);
845}
846
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]847/* Remove one value of a header. This only works on a <ctx> returned by one of
848 * the http_find_header functions. The value is removed, as well as surrounding
849 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]850 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]851 * message <msg>. The new index is returned. If it is zero, it means there is
852 * no more header, so any processing may stop. The ctx is always left in a form
853 * that can be handled by http_find_header2() to find next occurrence.
854 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]855int 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]856{
857 int cur_idx = ctx->idx;
858 char *sol = ctx->line;
859 struct hdr_idx_elem *hdr;
860 int delta, skip_comma;
861
862 if (!cur_idx)
863 return 0;
864
865 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]866 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]867 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]868 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]869 http_msg_move_end(msg, delta);
870 idx->used--;
871 hdr->len = 0; /* unused entry */
872 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]873 if (idx->tail == ctx->idx)
874 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]875 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau7c1c2172015-01-07 17:23:50 +0100[diff] [blame]876 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]877 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]878 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]879 return ctx->idx;
880 }
881
882 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]883 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
884 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]885 */
886
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]887 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]888 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]889 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]890 NULL, 0);
891 hdr->len += delta;
892 http_msg_move_end(msg, delta);
893 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]894 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]895 return ctx->idx;
896}
897
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]898/* This function handles a server error at the stream interface level. The
899 * stream interface is assumed to be already in a closed state. An optional
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]900 * message is copied into the input buffer.
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]901 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]902 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]903 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]904static void http_server_error(struct stream *s, struct stream_interface *si,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]905 int err, int finst, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]906{
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]907 FLT_STRM_CB(s, flt_http_reply(s, s->txn->status, msg));
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]908 channel_auto_read(si_oc(si));
909 channel_abort(si_oc(si));
910 channel_auto_close(si_oc(si));
911 channel_erase(si_oc(si));
912 channel_auto_close(si_ic(si));
913 channel_auto_read(si_ic(si));
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]914 if (msg)
Willy Tarreau06d80a92017-10-19 14:32:15 +0200[diff] [blame]915 co_inject(si_ic(si), msg->str, msg->len);
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]916 if (!(s->flags & SF_ERR_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]917 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]918 if (!(s->flags & SF_FINST_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]919 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]920}
921
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]922/* This function returns the appropriate error location for the given stream
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]923 * and message.
924 */
925
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]926struct chunk *http_error_message(struct stream *s)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]927{
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]928 const int msgnum = http_get_status_idx(s->txn->status);
929
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]930 if (s->be->errmsg[msgnum].str)
931 return &s->be->errmsg[msgnum];
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]932 else if (strm_fe(s)->errmsg[msgnum].str)
933 return &strm_fe(s)->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]934 else
935 return &http_err_chunks[msgnum];
936}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]937
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]938void
939http_reply_and_close(struct stream *s, short status, struct chunk *msg)
940{
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]941 s->txn->flags &= ~TX_WAIT_NEXT_RQ;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]942 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]943 stream_int_retnclose(&s->si[0], msg);
944}
945
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]946/*
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]947 * returns a known method among HTTP_METH_* or HTTP_METH_OTHER for all unknown
948 * ones.
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]949 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]950enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]951{
952 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]953 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]954
955 m = ((unsigned)*str - 'A');
956
957 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]958 for (h = http_methods[m]; h->len > 0; h++) {
959 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]960 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]961 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]962 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]963 };
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]964 }
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]965 return HTTP_METH_OTHER;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]966}
967
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]968/* Parse the URI from the given transaction (which is assumed to be in request
969 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
970 * It is returned otherwise.
971 */
Thierry FOURNIER3c331782015-09-17 19:33:35 +0200[diff] [blame]972char *http_get_path(struct http_txn *txn)
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]973{
974 char *ptr, *end;
975
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]976 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]977 end = ptr + txn->req.sl.rq.u_l;
978
979 if (ptr >= end)
980 return NULL;
981
Lukas Tribus23953682017-04-28 13:24:30 +0000[diff] [blame]982 /* RFC7230, par. 2.7 :
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]983 * Request-URI = "*" | absuri | abspath | authority
984 */
985
986 if (*ptr == '*')
987 return NULL;
988
989 if (isalpha((unsigned char)*ptr)) {
990 /* this is a scheme as described by RFC3986, par. 3.1 */
991 ptr++;
992 while (ptr < end &&
993 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
994 ptr++;
995 /* skip '://' */
996 if (ptr == end || *ptr++ != ':')
997 return NULL;
998 if (ptr == end || *ptr++ != '/')
999 return NULL;
1000 if (ptr == end || *ptr++ != '/')
1001 return NULL;
1002 }
1003 /* skip [user[:passwd]@]host[:[port]] */
1004
1005 while (ptr < end && *ptr != '/')
1006 ptr++;
1007
1008 if (ptr == end)
1009 return NULL;
1010
1011 /* OK, we got the '/' ! */
1012 return ptr;
1013}
1014
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]1015/* Parse the URI from the given string and look for the "/" beginning the PATH.
1016 * If not found, return NULL. It is returned otherwise.
1017 */
1018static char *
1019http_get_path_from_string(char *str)
1020{
1021 char *ptr = str;
1022
1023 /* RFC2616, par. 5.1.2 :
1024 * Request-URI = "*" | absuri | abspath | authority
1025 */
1026
1027 if (*ptr == '*')
1028 return NULL;
1029
1030 if (isalpha((unsigned char)*ptr)) {
1031 /* this is a scheme as described by RFC3986, par. 3.1 */
1032 ptr++;
1033 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
1034 ptr++;
1035 /* skip '://' */
1036 if (*ptr == '\0' || *ptr++ != ':')
1037 return NULL;
1038 if (*ptr == '\0' || *ptr++ != '/')
1039 return NULL;
1040 if (*ptr == '\0' || *ptr++ != '/')
1041 return NULL;
1042 }
1043 /* skip [user[:passwd]@]host[:[port]] */
1044
1045 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
1046 ptr++;
1047
1048 if (*ptr == '\0' || *ptr == ' ')
1049 return NULL;
1050
1051 /* OK, we got the '/' ! */
1052 return ptr;
1053}
1054
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]1055/* Returns a 302 for a redirectable request that reaches a server working in
1056 * in redirect mode. This may only be called just after the stream interface
1057 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
1058 * follow normal proxy processing. NOTE: this function is designed to support
1059 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1060 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1061void http_perform_server_redirect(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1062{
1063 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1064 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1065 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1066 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1067
1068 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1069 trash.len = strlen(HTTP_302);
1070 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1071
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]1072 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1073
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1074 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1075 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1076 return;
1077
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1078 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1079 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1080 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
1081 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1082 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1083
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1084 /* 3: add the request URI. Since it was already forwarded, we need
1085 * to temporarily rewind the buffer.
1086 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1087 txn = s->txn;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1088 b_rew(s->req.buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1089
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1090 path = http_get_path(txn);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1091 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]1092
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1093 b_adv(s->req.buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1094
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1095 if (!path)
1096 return;
1097
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1098 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1099 return;
1100
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1101 memcpy(trash.str + trash.len, path, len);
1102 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1103
1104 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1105 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
1106 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1107 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1108 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
1109 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1110 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1111
1112 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]1113 si_shutr(si);
1114 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1115 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1116 si->state = SI_ST_CLO;
1117
1118 /* send the message */
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1119 txn->status = 302;
1120 http_server_error(s, si, SF_ERR_LOCAL, SF_FINST_C, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1121
1122 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]1123 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]1124 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1125}
1126
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1127/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1128 * that the server side is closed. Note that err_type is actually a
1129 * bitmask, where almost only aborts may be cumulated with other
1130 * values. We consider that aborted operations are more important
1131 * than timeouts or errors due to the fact that nobody else in the
1132 * logs might explain incomplete retries. All others should avoid
1133 * being cumulated. It should normally not be possible to have multiple
1134 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1135 * Note that connection errors appearing on the second request of a keep-alive
1136 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1137 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1138void http_return_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1139{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1140 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1141
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1142 /* set s->txn->status for http_error_message(s) */
1143 s->txn->status = 503;
1144
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1145 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1146 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_Q,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1147 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1148 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1149 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1150 (s->txn->flags & TX_NOT_FIRST) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1151 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1152 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1153 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_Q,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1154 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1155 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1156 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_Q,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1157 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1158 else if (err_type & SI_ET_CONN_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1159 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1160 (s->txn->flags & TX_NOT_FIRST) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1161 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1162 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1163 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1164 (s->flags & SF_SRV_REUSED) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1165 http_error_message(s));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1166 else if (err_type & SI_ET_CONN_RES)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1167 http_server_error(s, si, SF_ERR_RESOURCE, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1168 (s->txn->flags & TX_NOT_FIRST) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1169 http_error_message(s));
1170 else { /* SI_ET_CONN_OTHER and others */
1171 s->txn->status = 500;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1172 http_server_error(s, si, SF_ERR_INTERNAL, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1173 http_error_message(s));
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1174 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1175}
1176
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1177extern const char sess_term_cond[8];
1178extern const char sess_fin_state[8];
1179extern const char *monthname[12];
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]1180struct pool_head *pool2_http_txn;
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1181struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1182struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1183struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1184
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1185/*
1186 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1187 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1188 */
1189void capture_headers(char *som, struct hdr_idx *idx,
1190 char **cap, struct cap_hdr *cap_hdr)
1191{
1192 char *eol, *sol, *col, *sov;
1193 int cur_idx;
1194 struct cap_hdr *h;
1195 int len;
1196
1197 sol = som + hdr_idx_first_pos(idx);
1198 cur_idx = hdr_idx_first_idx(idx);
1199
1200 while (cur_idx) {
1201 eol = sol + idx->v[cur_idx].len;
1202
1203 col = sol;
1204 while (col < eol && *col != ':')
1205 col++;
1206
1207 sov = col + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]1208 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1209 sov++;
1210
1211 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1212 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1213 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1214 if (cap[h->index] == NULL)
1215 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1216 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1217
1218 if (cap[h->index] == NULL) {
1219 Alert("HTTP capture : out of memory.\n");
1220 continue;
1221 }
1222
1223 len = eol - sov;
1224 if (len > h->len)
1225 len = h->len;
1226
1227 memcpy(cap[h->index], sov, len);
1228 cap[h->index][len]=0;
1229 }
1230 }
1231 sol = eol + idx->v[cur_idx].cr + 1;
1232 cur_idx = idx->v[cur_idx].next;
1233 }
1234}
1235
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1236/*
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1237 * Returns the data from Authorization header. Function may be called more
1238 * than once so data is stored in txn->auth_data. When no header is found
1239 * 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]1240 * searching again for something we are unable to find anyway. However, if
1241 * the result if valid, the cache is not reused because we would risk to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1242 * have the credentials overwritten by another stream in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1243 */
1244
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1245int
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1246get_http_auth(struct stream *s)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1247{
1248
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1249 struct http_txn *txn = s->txn;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1250 struct chunk auth_method;
1251 struct hdr_ctx ctx;
1252 char *h, *p;
1253 int len;
1254
1255#ifdef DEBUG_AUTH
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1256 printf("Auth for stream %p: %d\n", s, txn->auth.method);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1257#endif
1258
1259 if (txn->auth.method == HTTP_AUTH_WRONG)
1260 return 0;
1261
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1262 txn->auth.method = HTTP_AUTH_WRONG;
1263
1264 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1265
1266 if (txn->flags & TX_USE_PX_CONN) {
1267 h = "Proxy-Authorization";
1268 len = strlen(h);
1269 } else {
1270 h = "Authorization";
1271 len = strlen(h);
1272 }
1273
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1274 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]1275 return 0;
1276
1277 h = ctx.line + ctx.val;
1278
1279 p = memchr(h, ' ', ctx.vlen);
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1280 len = p - h;
1281 if (!p || len <= 0)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1282 return 0;
1283
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]1284 if (chunk_initlen(&auth_method, h, 0, len) != 1)
1285 return 0;
1286
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1287 chunk_initlen(&txn->auth.method_data, p + 1, 0, ctx.vlen - len - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1288
1289 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
Christopher Faulet6988f672017-07-27 15:18:52 +0200[diff] [blame]1290 struct chunk *http_auth = get_trash_chunk();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1291
1292 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Christopher Faulet6988f672017-07-27 15:18:52 +0200[diff] [blame]1293 http_auth->str, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1294
1295 if (len < 0)
1296 return 0;
1297
1298
Christopher Faulet6988f672017-07-27 15:18:52 +0200[diff] [blame]1299 http_auth->str[len] = '\0';
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1300
Christopher Faulet6988f672017-07-27 15:18:52 +0200[diff] [blame]1301 p = strchr(http_auth->str, ':');
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1302
1303 if (!p)
1304 return 0;
1305
Christopher Faulet6988f672017-07-27 15:18:52 +0200[diff] [blame]1306 txn->auth.user = http_auth->str;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1307 *p = '\0';
1308 txn->auth.pass = p+1;
1309
1310 txn->auth.method = HTTP_AUTH_BASIC;
1311 return 1;
1312 }
1313
1314 return 0;
1315}
1316
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1317
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1318/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1319 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1320 * nothing is done and 1 is returned.
1321 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1322static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1323{
1324 int delta;
1325 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1326 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1327
1328 if (msg->sl.rq.v_l != 0)
1329 return 1;
1330
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1331 /* RFC 1945 allows only GET for HTTP/0.9 requests */
1332 if (txn->meth != HTTP_METH_GET)
1333 return 0;
1334
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1335 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1336
1337 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1338 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
1339 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1340 }
1341 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1342 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]1343 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1344 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1345 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1346 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1347 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1348 NULL, NULL);
1349 if (unlikely(!cur_end))
1350 return 0;
1351
1352 /* we have a full HTTP/1.0 request now and we know that
1353 * we have either a CR or an LF at <ptr>.
1354 */
1355 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1356 return 1;
1357}
1358
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1359/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1360 * and "keep-alive" values. If we already know that some headers may safely
1361 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1362 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1363 * - 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]1364 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1365 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1366 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1367 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1368 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1369 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1370void 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]1371{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1372 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1373 const char *hdr_val = "Connection";
1374 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1375
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1376 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1377 return;
1378
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1379 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1380 hdr_val = "Proxy-Connection";
1381 hdr_len = 16;
1382 }
1383
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1384 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1385 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1386 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]1387 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1388 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1389 if (to_del & 2)
1390 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1391 else
1392 txn->flags |= TX_CON_KAL_SET;
1393 }
1394 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1395 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1396 if (to_del & 1)
1397 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1398 else
1399 txn->flags |= TX_CON_CLO_SET;
1400 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1401 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1402 txn->flags |= TX_HDR_CONN_UPG;
1403 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1404 }
1405
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1406 txn->flags |= TX_HDR_CONN_PRS;
1407 return;
1408}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1409
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1410/* Apply desired changes on the Connection: header. Values may be removed and/or
1411 * added depending on the <wanted> flags, which are exclusively composed of
1412 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1413 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1414 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1415void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1416{
1417 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1418 const char *hdr_val = "Connection";
1419 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1420
1421 ctx.idx = 0;
1422
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1423
1424 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1425 hdr_val = "Proxy-Connection";
1426 hdr_len = 16;
1427 }
1428
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1429 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1430 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]1431 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1432 if (wanted & TX_CON_KAL_SET)
1433 txn->flags |= TX_CON_KAL_SET;
1434 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1435 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1436 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1437 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1438 if (wanted & TX_CON_CLO_SET)
1439 txn->flags |= TX_CON_CLO_SET;
1440 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1441 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1442 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1443 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1444
1445 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1446 return;
1447
1448 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1449 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1450 hdr_val = "Connection: close";
1451 hdr_len = 17;
1452 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1453 hdr_val = "Proxy-Connection: close";
1454 hdr_len = 23;
1455 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1456 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1457 }
1458
1459 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1460 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1461 hdr_val = "Connection: keep-alive";
1462 hdr_len = 22;
1463 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1464 hdr_val = "Proxy-Connection: keep-alive";
1465 hdr_len = 28;
1466 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1467 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1468 }
1469 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1470}
1471
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]1472/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
1473 * value is larger than 1000, it is bound to 1000. The parser consumes up to
1474 * 1 digit, one dot and 3 digits and stops on the first invalid character.
1475 * Unparsable qvalues return 1000 as "q=1.000".
1476 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]1477int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]1478{
1479 int q = 1000;
1480
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]1481 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]1482 goto out;
1483 q = (*qvalue++ - '0') * 1000;
1484
1485 if (*qvalue++ != '.')
1486 goto out;
1487
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]1488 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]1489 goto out;
1490 q += (*qvalue++ - '0') * 100;
1491
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]1492 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]1493 goto out;
1494 q += (*qvalue++ - '0') * 10;
1495
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]1496 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]1497 goto out;
1498 q += (*qvalue++ - '0') * 1;
1499 out:
1500 if (q > 1000)
1501 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]1502 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]1503 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]1504 return q;
1505}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1506
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1507void 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]1508{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]1509 struct proxy *fe = strm_fe(s);
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]1510 int tmp = TX_CON_WANT_KAL;
1511
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1512 if (!((fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
1513 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]1514 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
1515 tmp = TX_CON_WANT_TUN;
1516
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1517 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]1518 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
1519 tmp = TX_CON_WANT_TUN;
1520 }
1521
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1522 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]1523 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
1524 /* option httpclose + server_close => forceclose */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1525 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]1526 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
1527 tmp = TX_CON_WANT_CLO;
1528 else
1529 tmp = TX_CON_WANT_SCL;
1530 }
1531
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1532 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]1533 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
1534 tmp = TX_CON_WANT_CLO;
1535
1536 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
1537 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
1538
1539 if (!(txn->flags & TX_HDR_CONN_PRS) &&
1540 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
1541 /* parse the Connection header and possibly clean it */
1542 int to_del = 0;
1543 if ((msg->flags & HTTP_MSGF_VER_11) ||
1544 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1545 !((fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]1546 to_del |= 2; /* remove "keep-alive" */
1547 if (!(msg->flags & HTTP_MSGF_VER_11))
1548 to_del |= 1; /* remove "close" */
1549 http_parse_connection_header(txn, msg, to_del);
1550 }
1551
1552 /* check if client or config asks for explicit close in KAL/SCL */
1553 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
1554 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
1555 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
1556 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
1557 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1558 fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]1559 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
1560}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1561
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1562/* This stream analyser waits for a complete HTTP request. It returns 1 if the
1563 * processing can continue on next analysers, or zero if it either needs more
1564 * data or wants to immediately abort the request (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1565 * 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]1566 * when it has nothing left to do, and may remove any analyser when it wants to
1567 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1568 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1569int http_wait_for_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1570{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1571 /*
1572 * We will parse the partial (or complete) lines.
1573 * We will check the request syntax, and also join multi-line
1574 * headers. An index of all the lines will be elaborated while
1575 * parsing.
1576 *
1577 * For the parsing, we use a 28 states FSM.
1578 *
1579 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1580 * req->buf->p = beginning of request
1581 * req->buf->p + msg->eoh = end of processed headers / start of current one
1582 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1583 * msg->eol = end of current header or line (LF or CRLF)
1584 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1585 *
1586 * 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]1587 * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1588 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
1589 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1590 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1591
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1592 int cur_idx;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]1593 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1594 struct http_txn *txn = s->txn;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1595 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]1596 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1597
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1598 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]1599 now_ms, __FUNCTION__,
1600 s,
1601 req,
1602 req->rex, req->wex,
1603 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1604 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]1605 req->analysers);
1606
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]1607 /* we're speaking HTTP here, so let's speak HTTP to the client */
1608 s->srv_error = http_return_srv_error;
1609
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]1610 /* There's a protected area at the end of the buffer for rewriting
1611 * purposes. We don't want to start to parse the request if the
1612 * protected area is affected, because we may have to move processed
1613 * data later, which is much more complicated.
1614 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1615 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200[diff] [blame]1616
1617 /* This point is executed when some data is avalaible for analysis,
1618 * so we log the end of the idle time. */
1619 if (s->logs.t_idle == -1)
1620 s->logs.t_idle = tv_ms_elapsed(&s->logs.tv_accept, &now) - s->logs.t_handshake;
1621
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]1622 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]1623 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]1624 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]1625 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]1626 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]1627 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]1628 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]1629 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]1630 return 0;
1631 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]1632 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
1633 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
1634 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]1635 }
1636
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1637 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1638 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]1639 }
1640
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1641 /* 1: we might have to print this header in debug mode */
1642 if (unlikely((global.mode & MODE_DEBUG) &&
1643 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]1644 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1645 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1646
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1647 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1648 /* this is a bit complex : in case of error on the request line,
1649 * we know that rq.l is still zero, so we display only the part
1650 * up to the end of the line (truncated by debug_hdr).
1651 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1652 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1653 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1654
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1655 sol += hdr_idx_first_pos(&txn->hdr_idx);
1656 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1657
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1658 while (cur_idx) {
1659 eol = sol + txn->hdr_idx.v[cur_idx].len;
1660 debug_hdr("clihdr", s, sol, eol);
1661 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1662 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1663 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1664 }
1665
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1666
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1667 /*
1668 * Now we quickly check if we have found a full valid request.
1669 * If not so, we check the FD and buffer states before leaving.
1670 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]1671 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]1672 * requests are checked first. When waiting for a second request
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1673 * on a keep-alive stream, if we encounter and error, close, t/o,
1674 * we note the error in the stream flags but don't set any state.
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]1675 * Since the error will be noted there, it will not be counted by
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1676 * process_stream() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]1677 * Last, we may increase some tracked counters' http request errors on
1678 * the cases that are deliberately the client's fault. For instance,
1679 * a timeout or connection reset is not counted as an error. However
1680 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1681 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1682
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]1683 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1684 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1685 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1686 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]1687 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1688 stream_inc_http_req_ctr(s);
1689 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1690 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1691 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]1692 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1693
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1694 /* 1: Since we are in header mode, if there's no space
1695 * left for headers, we won't be able to free more
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1696 * later, so the stream will never terminate. We
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1697 * must terminate it now.
1698 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1699 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1700 /* FIXME: check if URI is set and return Status
1701 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1702 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1703 stream_inc_http_req_ctr(s);
1704 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1705 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]1706 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1707 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1708 goto return_bad_req;
1709 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1710
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1711 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]1712 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1713 if (!(s->flags & SF_ERR_MASK))
1714 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]1715
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]1716 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]1717 goto failed_keep_alive;
1718
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]1719 if (sess->fe->options & PR_O_IGNORE_PRB)
1720 goto failed_keep_alive;
1721
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1722 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]1723 if (msg->err_pos >= 0) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1724 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, sess->fe);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1725 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]1726 }
1727
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]1728 txn->status = 400;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1729 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1730 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]1731 http_reply_and_close(s, txn->status, NULL);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]1732 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1733 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1734 proxy_inc_fe_req_ctr(sess->fe);
1735 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]1736 if (sess->listener->counters)
1737 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1738
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1739 if (!(s->flags & SF_FINST_MASK))
1740 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1741 return 0;
1742 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1743
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1744 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]1745 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]1746 if (!(s->flags & SF_ERR_MASK))
1747 s->flags |= SF_ERR_CLITO;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]1748
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]1749 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]1750 goto failed_keep_alive;
1751
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]1752 if (sess->fe->options & PR_O_IGNORE_PRB)
1753 goto failed_keep_alive;
1754
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1755 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]1756 if (msg->err_pos >= 0) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1757 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, sess->fe);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1758 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]1759 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1760 txn->status = 408;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1761 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1762 msg->msg_state = HTTP_MSG_ERROR;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1763 http_reply_and_close(s, txn->status, http_error_message(s));
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]1764 req->analysers &= AN_REQ_FLT_END;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1765
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1766 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1767 proxy_inc_fe_req_ctr(sess->fe);
1768 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]1769 if (sess->listener->counters)
1770 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1771
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1772 if (!(s->flags & SF_FINST_MASK))
1773 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1774 return 0;
1775 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1776
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1777 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]1778 else if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1779 if (!(s->flags & SF_ERR_MASK))
1780 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]1781
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]1782 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]1783 goto failed_keep_alive;
1784
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]1785 if (sess->fe->options & PR_O_IGNORE_PRB)
1786 goto failed_keep_alive;
1787
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1788 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1789 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1790 txn->status = 400;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1791 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1792 msg->msg_state = HTTP_MSG_ERROR;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1793 http_reply_and_close(s, txn->status, http_error_message(s));
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]1794 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1795 stream_inc_http_err_ctr(s);
1796 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1797 proxy_inc_fe_req_ctr(sess->fe);
1798 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]1799 if (sess->listener->counters)
1800 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1801
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1802 if (!(s->flags & SF_FINST_MASK))
1803 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1804 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1805 }
1806
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]1807 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]1808 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1809 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]1810#ifdef TCP_QUICKACK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]1811 if (sess->listener->options & LI_O_NOQUICKACK && req->buf->i &&
1812 objt_conn(sess->origin) && conn_ctrl_ready(__objt_conn(sess->origin))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]1813 /* We need more data, we have to re-enable quick-ack in case we
1814 * previously disabled it, otherwise we might cause the client
1815 * to delay next data.
1816 */
Willy Tarreau585744b2017-08-24 14:31:19 +0200[diff] [blame]1817 setsockopt(__objt_conn(sess->origin)->handle.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]1818 }
1819#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]1820
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]1821 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
1822 /* If the client starts to talk, let's fall back to
1823 * request timeout processing.
1824 */
1825 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]1826 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]1827 }
1828
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1829 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]1830 if (!tick_isset(req->analyse_exp)) {
1831 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
1832 (txn->flags & TX_WAIT_NEXT_RQ) &&
1833 tick_isset(s->be->timeout.httpka))
1834 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
1835 else
1836 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
1837 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1838
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1839 /* we're not ready yet */
1840 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]1841
1842 failed_keep_alive:
1843 /* Here we process low-level errors for keep-alive requests. In
1844 * short, if the request is not the first one and it experiences
1845 * a timeout, read error or shutdown, we just silently close so
1846 * that the client can try again.
1847 */
1848 txn->status = 0;
1849 msg->msg_state = HTTP_MSG_RQBEFORE;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]1850 req->analysers &= AN_REQ_FLT_END;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]1851 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]1852 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1853 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]1854 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]1855 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1856 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1857
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1858 /* OK now we have a complete HTTP request with indexed headers. Let's
1859 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1860 * 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]1861 * 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]1862 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1863 * byte after the last LF. msg->sov points to the first byte of data.
1864 * msg->eol cannot be trusted because it may have been left uninitialized
1865 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1866 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1867
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1868 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1869 proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]1870
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]1871 if (txn->flags & TX_WAIT_NEXT_RQ) {
1872 /* kill the pending keep-alive timeout */
1873 txn->flags &= ~TX_WAIT_NEXT_RQ;
1874 req->analyse_exp = TICK_ETERNITY;
1875 }
1876
1877
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1878 /* Maybe we found in invalid header name while we were configured not
1879 * to block on that, so we have to capture it now.
1880 */
1881 if (unlikely(msg->err_pos >= 0))
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1882 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, sess->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1883
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1884 /*
1885 * 1: identify the method
1886 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1887 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1888
1889 /* we can make use of server redirect on GET and HEAD */
1890 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1891 s->flags |= SF_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]1892
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1893 /*
1894 * 2: check if the URI matches the monitor_uri.
1895 * We have to do this for every request which gets in, because
1896 * the monitor-uri is defined by the frontend.
1897 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1898 if (unlikely((sess->fe->monitor_uri_len != 0) &&
1899 (sess->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1900 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1901 sess->fe->monitor_uri,
1902 sess->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1903 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1904 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1905 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1906 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1907
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1908 s->flags |= SF_MONITOR;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1909 sess->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1910
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1911 /* Check if we want to fail this monitor request or not */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]1912 list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]1913 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]1914
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1915 ret = acl_pass(ret);
1916 if (cond->pol == ACL_COND_UNLESS)
1917 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1918
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1919 if (ret) {
1920 /* we fail this request, let's return 503 service unavail */
1921 txn->status = 503;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1922 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1923 if (!(s->flags & SF_ERR_MASK))
1924 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1925 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1926 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1927 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]1928
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1929 /* nothing to fail, let's reply normaly */
1930 txn->status = 200;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1931 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1932 if (!(s->flags & SF_ERR_MASK))
1933 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1934 goto return_prx_cond;
1935 }
1936
1937 /*
1938 * 3: Maybe we have to copy the original REQURI for the logs ?
1939 * Note: we cannot log anymore if the request has been
1940 * classified as invalid.
1941 */
1942 if (unlikely(s->logs.logwait & LW_REQ)) {
1943 /* we have a complete HTTP request that we must log */
1944 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
1945 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1946
Stéphane Cottin23e9e932017-05-18 08:58:41 +0200[diff] [blame]1947 if (urilen >= global.tune.requri_len )
1948 urilen = global.tune.requri_len - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1949 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1950 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1951
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]1952 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1953 s->do_log(s);
1954 } else {
1955 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1956 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1957 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1958
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]1959 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
1960 * exactly one digit "." one digit. This check may be disabled using
1961 * option accept-invalid-http-request.
1962 */
1963 if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) {
1964 if (msg->sl.rq.v_l != 8) {
1965 msg->err_pos = msg->sl.rq.v;
1966 goto return_bad_req;
1967 }
1968
1969 if (req->buf->p[msg->sl.rq.v + 4] != '/' ||
1970 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 5]) ||
1971 req->buf->p[msg->sl.rq.v + 6] != '.' ||
1972 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 7])) {
1973 msg->err_pos = msg->sl.rq.v + 4;
1974 goto return_bad_req;
1975 }
1976 }
Willy Tarreau13317662015-05-01 13:47:08 +0200[diff] [blame]1977 else {
1978 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
1979 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
1980 goto return_bad_req;
1981 }
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]1982
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1983 /* ... and check if the request is HTTP/1.1 or above */
1984 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1985 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
1986 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
1987 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]1988 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1989
1990 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1991 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]1992
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1993 /* if the frontend has "option http-use-proxy-header", we'll check if
1994 * we have what looks like a proxied connection instead of a connection,
1995 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
1996 * Note that this is *not* RFC-compliant, however browsers and proxies
1997 * happen to do that despite being non-standard :-(
1998 * We consider that a request not beginning with either '/' or '*' is
1999 * a proxied connection, which covers both "scheme://location" and
2000 * CONNECT ip:port.
2001 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2002 if ((sess->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2003 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2004 txn->flags |= TX_USE_PX_CONN;
2005
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2006 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2007 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2008
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2009 /* 5: we may need to capture headers */
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2010 if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2011 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2012 s->req_cap, sess->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2013
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2014 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
2015 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2016 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2017 * The length of a message body is determined by one of the following
2018 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2019 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2020 * 1. Any response to a HEAD request and any response with a 1xx
2021 * (Informational), 204 (No Content), or 304 (Not Modified) status
2022 * code is always terminated by the first empty line after the
2023 * header fields, regardless of the header fields present in the
2024 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2025 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2026 * 2. Any 2xx (Successful) response to a CONNECT request implies that
2027 * the connection will become a tunnel immediately after the empty
2028 * line that concludes the header fields. A client MUST ignore any
2029 * Content-Length or Transfer-Encoding header fields received in
2030 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2031 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2032 * 3. If a Transfer-Encoding header field is present and the chunked
2033 * transfer coding (Section 4.1) is the final encoding, the message
2034 * body length is determined by reading and decoding the chunked
2035 * data until the transfer coding indicates the data is complete.
2036 *
2037 * If a Transfer-Encoding header field is present in a response and
2038 * the chunked transfer coding is not the final encoding, the
2039 * message body length is determined by reading the connection until
2040 * it is closed by the server. If a Transfer-Encoding header field
2041 * is present in a request and the chunked transfer coding is not
2042 * the final encoding, the message body length cannot be determined
2043 * reliably; the server MUST respond with the 400 (Bad Request)
2044 * status code and then close the connection.
2045 *
2046 * If a message is received with both a Transfer-Encoding and a
2047 * Content-Length header field, the Transfer-Encoding overrides the
2048 * Content-Length. Such a message might indicate an attempt to
2049 * perform request smuggling (Section 9.5) or response splitting
2050 * (Section 9.4) and ought to be handled as an error. A sender MUST
2051 * remove the received Content-Length field prior to forwarding such
2052 * a message downstream.
2053 *
2054 * 4. If a message is received without Transfer-Encoding and with
2055 * either multiple Content-Length header fields having differing
2056 * field-values or a single Content-Length header field having an
2057 * invalid value, then the message framing is invalid and the
2058 * recipient MUST treat it as an unrecoverable error. If this is a
2059 * request message, the server MUST respond with a 400 (Bad Request)
2060 * status code and then close the connection. If this is a response
2061 * message received by a proxy, the proxy MUST close the connection
2062 * to the server, discard the received response, and send a 502 (Bad
2063 * Gateway) response to the client. If this is a response message
2064 * received by a user agent, the user agent MUST close the
2065 * connection to the server and discard the received response.
2066 *
2067 * 5. If a valid Content-Length header field is present without
2068 * Transfer-Encoding, its decimal value defines the expected message
2069 * body length in octets. If the sender closes the connection or
2070 * the recipient times out before the indicated number of octets are
2071 * received, the recipient MUST consider the message to be
2072 * incomplete and close the connection.
2073 *
2074 * 6. If this is a request message and none of the above are true, then
2075 * the message body length is zero (no message body is present).
2076 *
2077 * 7. Otherwise, this is a response message without a declared message
2078 * body length, so the message body length is determined by the
2079 * number of octets received prior to the server closing the
2080 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2081 */
2082
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2083 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2084 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]2085 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2086 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Christopher Fauletbe821b92017-03-30 11:21:53 +0200[diff] [blame]2087 msg->flags |= HTTP_MSGF_TE_CHNK;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2088 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2089 /* chunked not last, return badreq */
2090 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2091 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2092 }
2093
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]2094 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2095 ctx.idx = 0;
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]2096 if (msg->flags & HTTP_MSGF_TE_CHNK) {
2097 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
2098 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2099 }
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2100 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]2101 signed long long cl;
2102
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2103 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2104 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2105 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2106 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2107
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2108 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2109 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2110 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2111 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2112
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2113 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2114 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2115 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2116 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2117
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2118 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2119 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2120 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2121 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2122
Christopher Fauletbe821b92017-03-30 11:21:53 +0200[diff] [blame]2123 msg->flags |= HTTP_MSGF_CNT_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2124 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2125 }
2126
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2127 /* even bodyless requests have a known length */
2128 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2129
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2130 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
2131 * only change if both the request and the config reference something else.
2132 * Option httpclose by itself sets tunnel mode where headers are mangled.
2133 * However, if another mode is set, it will affect it (eg: server-close/
2134 * keep-alive + httpclose = close). Note that we avoid to redo the same work
2135 * if FE and BE have the same settings (common). The method consists in
2136 * checking if options changed between the two calls (implying that either
2137 * one is non-null, or one of them is non-null and we are there for the first
2138 * time.
2139 */
2140 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2141 ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2142 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2143
Willy Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]2144 /* we may have to wait for the request's body */
2145 if ((s->be->options & PR_O_WREQ_BODY) &&
2146 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
2147 req->analysers |= AN_REQ_HTTP_BODY;
2148
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2149 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2150 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2151 req->analyse_exp = TICK_ETERNITY;
2152 return 1;
2153
2154 return_bad_req:
2155 /* We centralize bad requests processing here */
2156 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2157 /* we detected a parsing error. We want to archive this request
2158 * in the dedicated proxy area for later troubleshooting.
2159 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2160 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, sess->fe);
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2161 }
2162
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2163 txn->req.err_state = txn->req.msg_state;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2164 txn->req.msg_state = HTTP_MSG_ERROR;
2165 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]2166 http_reply_and_close(s, txn->status, http_error_message(s));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2167
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2168 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2169 if (sess->listener->counters)
2170 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2171
2172 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2173 if (!(s->flags & SF_ERR_MASK))
2174 s->flags |= SF_ERR_PRXCOND;
2175 if (!(s->flags & SF_FINST_MASK))
2176 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2177
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]2178 req->analysers &= AN_REQ_FLT_END;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2179 req->analyse_exp = TICK_ETERNITY;
2180 return 0;
2181}
2182
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2183
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2184/* This function prepares an applet to handle the stats. It can deal with the
2185 * "100-continue" expectation, check that admin rules are met for POST requests,
2186 * and program a response message if something was unexpected. It cannot fail
2187 * 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]2188 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2189 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2190 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2191 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2192int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2193{
2194 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]2195 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2196 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2197 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2198 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2199 struct uri_auth *uri_auth = s->be->uri_auth;
2200 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2201 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2202
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2203 appctx = si_appctx(si);
2204 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
2205 appctx->st1 = appctx->st2 = 0;
2206 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
2207 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2208 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]2209 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2210
2211 uri = msg->chn->buf->p + msg->sl.rq.u;
2212 lookup = uri + uri_auth->uri_len;
2213
2214 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
2215 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2216 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2217 break;
2218 }
2219 }
2220
2221 if (uri_auth->refresh) {
2222 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
2223 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2224 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2225 break;
2226 }
2227 }
2228 }
2229
2230 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
2231 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2232 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2233 break;
2234 }
2235 }
2236
Willy Tarreau1e62df92016-01-11 18:57:53 +0100[diff] [blame]2237 for (h = lookup; h <= uri + msg->sl.rq.u_l - 6; h++) {
2238 if (memcmp(h, ";typed", 6) == 0) {
2239 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
2240 appctx->ctx.stats.flags |= STAT_FMT_TYPED;
2241 break;
2242 }
2243 }
2244
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2245 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
2246 if (memcmp(h, ";st=", 4) == 0) {
2247 int i;
2248 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2249 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2250 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
2251 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2252 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2253 break;
2254 }
2255 }
2256 break;
2257 }
2258 }
2259
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2260 appctx->ctx.stats.scope_str = 0;
2261 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2262 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
2263 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
2264 int itx = 0;
2265 const char *h2;
2266 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
2267 const char *err;
2268
2269 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
2270 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2271 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2272 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
2273 itx++;
2274 h++;
2275 }
2276
2277 if (itx > STAT_SCOPE_TXT_MAXLEN)
2278 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2279 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2280
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2281 /* 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]2282 memcpy(scope_txt, h2, itx);
2283 scope_txt[itx] = '\0';
2284 err = invalid_char(scope_txt);
2285 if (err) {
2286 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2287 appctx->ctx.stats.scope_str = 0;
2288 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2289 }
2290 break;
2291 }
2292 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2293
2294 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2295 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2296 int ret = 1;
2297
2298 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2299 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]2300 ret = acl_pass(ret);
2301 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2302 ret = !ret;
2303 }
2304
2305 if (ret) {
2306 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2307 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2308 break;
2309 }
2310 }
2311
2312 /* Was the status page requested with a POST ? */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]2313 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2314 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]2315 /* we'll need the request body, possibly after sending 100-continue */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]2316 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE)
2317 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2318 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2319 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2320 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2321 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
2322 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]2323 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2324 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2325 else {
2326 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2327 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2328 }
2329
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2330 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2331 return 1;
2332}
2333
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]2334/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
2335 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
2336 */
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]2337void inet_set_tos(int fd, const struct sockaddr_storage *from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]2338{
2339#ifdef IP_TOS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]2340 if (from->ss_family == AF_INET)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]2341 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
2342#endif
2343#ifdef IPV6_TCLASS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]2344 if (from->ss_family == AF_INET6) {
2345 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)from)->sin6_addr))
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]2346 /* v4-mapped addresses need IP_TOS */
2347 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
2348 else
2349 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
2350 }
2351#endif
2352}
2353
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2354int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]2355 const char* name, unsigned int name_len,
2356 const char *str, struct my_regex *re,
2357 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]2358{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]2359 struct hdr_ctx ctx;
2360 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2361 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]2362 int (*http_find_hdr_func)(const char *name, int len, char *sol,
2363 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]2364 struct chunk *output = get_trash_chunk();
2365
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]2366 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]2367
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]2368 /* Choose the header browsing function. */
2369 switch (action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2370 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]2371 http_find_hdr_func = http_find_header2;
2372 break;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2373 case ACT_HTTP_REPLACE_HDR:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]2374 http_find_hdr_func = http_find_full_header2;
2375 break;
2376 default: /* impossible */
2377 return -1;
2378 }
2379
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]2380 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
2381 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]2382 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]2383 char *val = ctx.line + ctx.val;
2384 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]2385
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]2386 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
2387 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]2388
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]2389 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]2390 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]2391 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]2392
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]2393 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]2394
2395 hdr->len += delta;
2396 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]2397
2398 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]2399 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]2400 }
2401
2402 return 0;
2403}
2404
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2405static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]2406 const char* name, unsigned int name_len,
2407 struct list *fmt, struct my_regex *re,
2408 int action)
2409{
Christopher Faulet07a0fec2017-02-08 12:17:07 +0100[diff] [blame]2410 struct chunk *replace;
2411 int ret = -1;
2412
2413 replace = alloc_trash_chunk();
2414 if (!replace)
2415 goto leave;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]2416
2417 replace->len = build_logline(s, replace->str, replace->size, fmt);
2418 if (replace->len >= replace->size - 1)
Christopher Faulet07a0fec2017-02-08 12:17:07 +0100[diff] [blame]2419 goto leave;
2420
2421 ret = http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]2422
Christopher Faulet07a0fec2017-02-08 12:17:07 +0100[diff] [blame]2423 leave:
2424 free_trash_chunk(replace);
2425 return ret;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]2426}
2427
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2428/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]2429 * transaction <txn>. Returns the verdict of the first rule that prevents
2430 * further processing of the request (auth, deny, ...), and defaults to
2431 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
2432 * 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]2433 * on txn->flags if it encounters a tarpit rule. If <deny_status> is not NULL
2434 * and a deny/tarpit rule is matched, it will be filled with this rule's deny
2435 * status.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2436 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]2437enum rule_result
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]2438http_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]2439{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2440 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]2441 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2442 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]2443 struct act_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2444 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]2445 const char *auth_realm;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]2446 int act_flags = 0;
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]2447 int len;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2448
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]2449 /* If "the current_rule_list" match the executed rule list, we are in
2450 * resume condition. If a resume is needed it is always in the action
2451 * and never in the ACL or converters. In this case, we initialise the
2452 * current rule, and go to the action execution point.
2453 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]2454 if (s->current_rule) {
2455 rule = s->current_rule;
2456 s->current_rule = NULL;
2457 if (s->current_rule_list == rules)
2458 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]2459 }
2460 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]2461
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2462 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2463
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2464 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2465 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2466 int ret;
2467
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2468 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]2469 ret = acl_pass(ret);
2470
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2471 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2472 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2473
2474 if (!ret) /* condition not matched */
2475 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2476 }
2477
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]2478 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]2479resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2480 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2481 case ACT_ACTION_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]2482 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2483
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2484 case ACT_ACTION_DENY:
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]2485 if (deny_status)
2486 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]2487 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2488
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2489 case ACT_HTTP_REQ_TARPIT:
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]2490 txn->flags |= TX_CLTARPIT;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]2491 if (deny_status)
2492 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]2493 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]2494
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2495 case ACT_HTTP_REQ_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]2496 /* Auth might be performed on regular http-req rules as well as on stats */
2497 auth_realm = rule->arg.auth.realm;
2498 if (!auth_realm) {
2499 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
2500 auth_realm = STATS_DEFAULT_REALM;
2501 else
2502 auth_realm = px->id;
2503 }
2504 /* send 401/407 depending on whether we use a proxy or not. We still
2505 * count one error, because normal browsing won't significantly
2506 * increase the counter but brute force attempts will.
2507 */
2508 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
2509 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2510 http_reply_and_close(s, txn->status, &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2511 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]2512 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2513
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2514 case ACT_HTTP_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]2515 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
2516 return HTTP_RULE_RES_BADREQ;
2517 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]2518
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2519 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]2520 s->task->nice = rule->arg.nice;
2521 break;
2522
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2523 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2524 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreau585744b2017-08-24 14:31:19 +0200[diff] [blame]2525 inet_set_tos(cli_conn->handle.fd, &cli_conn->addr.from, rule->arg.tos);
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]2526 break;
2527
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2528 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]2529#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2530 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreau585744b2017-08-24 14:31:19 +0200[diff] [blame]2531 setsockopt(cli_conn->handle.fd, SOL_SOCKET, SO_MARK, &rule->arg.mark, sizeof(rule->arg.mark));
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]2532#endif
2533 break;
2534
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2535 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]2536 s->logs.level = rule->arg.loglevel;
2537 break;
2538
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2539 case ACT_HTTP_REPLACE_HDR:
2540 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]2541 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
2542 rule->arg.hdr_add.name_len,
2543 &rule->arg.hdr_add.fmt,
2544 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]2545 return HTTP_RULE_RES_BADREQ;
2546 break;
2547
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2548 case ACT_HTTP_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2549 ctx.idx = 0;
2550 /* remove all occurrences of the header */
2551 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
2552 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
2553 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2554 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]2555 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2556
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2557 case ACT_HTTP_SET_HDR:
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2558 case ACT_HTTP_ADD_HDR: {
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]2559 /* The scope of the trash buffer must be limited to this function. The
2560 * build_logline() function can execute a lot of other function which
2561 * can use the trash buffer. So for limiting the scope of this global
2562 * buffer, we build first the header value using build_logline, and
2563 * after we store the header name.
2564 */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2565 struct chunk *replace;
2566
2567 replace = alloc_trash_chunk();
2568 if (!replace)
2569 return HTTP_RULE_RES_BADREQ;
2570
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]2571 len = rule->arg.hdr_add.name_len + 2,
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2572 len += build_logline(s, replace->str + len, replace->size - len, &rule->arg.hdr_add.fmt);
2573 memcpy(replace->str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
2574 replace->str[rule->arg.hdr_add.name_len] = ':';
2575 replace->str[rule->arg.hdr_add.name_len + 1] = ' ';
2576 replace->len = len;
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]2577
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2578 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]2579 /* remove all occurrences of the header */
2580 ctx.idx = 0;
2581 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
2582 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
2583 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
2584 }
2585 }
2586
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2587 http_header_add_tail2(&txn->req, &txn->hdr_idx, replace->str, replace->len);
2588
2589 free_trash_chunk(replace);
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2590 break;
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2591 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2592
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2593 case ACT_HTTP_DEL_ACL:
2594 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2595 struct pat_ref *ref;
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2596 struct chunk *key;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2597
2598 /* collect reference */
2599 ref = pat_ref_lookup(rule->arg.map.ref);
2600 if (!ref)
2601 continue;
2602
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2603 /* allocate key */
2604 key = alloc_trash_chunk();
2605 if (!key)
2606 return HTTP_RULE_RES_BADREQ;
2607
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2608 /* collect key */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2609 key->len = build_logline(s, key->str, key->size, &rule->arg.map.key);
2610 key->str[key->len] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2611
2612 /* perform update */
2613 /* returned code: 1=ok, 0=ko */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2614 pat_ref_delete(ref, key->str);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2615
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2616 free_trash_chunk(key);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2617 break;
2618 }
2619
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2620 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2621 struct pat_ref *ref;
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2622 struct chunk *key;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2623
2624 /* collect reference */
2625 ref = pat_ref_lookup(rule->arg.map.ref);
2626 if (!ref)
2627 continue;
2628
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2629 /* allocate key */
2630 key = alloc_trash_chunk();
2631 if (!key)
2632 return HTTP_RULE_RES_BADREQ;
2633
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2634 /* collect key */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2635 key->len = build_logline(s, key->str, key->size, &rule->arg.map.key);
2636 key->str[key->len] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2637
2638 /* perform update */
2639 /* add entry only if it does not already exist */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2640 if (pat_ref_find_elt(ref, key->str) == NULL)
2641 pat_ref_add(ref, key->str, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2642
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2643 free_trash_chunk(key);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2644 break;
2645 }
2646
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2647 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2648 struct pat_ref *ref;
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2649 struct chunk *key, *value;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2650
2651 /* collect reference */
2652 ref = pat_ref_lookup(rule->arg.map.ref);
2653 if (!ref)
2654 continue;
2655
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2656 /* allocate key */
2657 key = alloc_trash_chunk();
2658 if (!key)
2659 return HTTP_RULE_RES_BADREQ;
2660
2661 /* allocate value */
2662 value = alloc_trash_chunk();
2663 if (!value) {
2664 free_trash_chunk(key);
2665 return HTTP_RULE_RES_BADREQ;
2666 }
2667
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2668 /* collect key */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2669 key->len = build_logline(s, key->str, key->size, &rule->arg.map.key);
2670 key->str[key->len] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2671
2672 /* collect value */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2673 value->len = build_logline(s, value->str, value->size, &rule->arg.map.value);
2674 value->str[value->len] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2675
2676 /* perform update */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2677 if (pat_ref_find_elt(ref, key->str) != NULL)
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2678 /* update entry if it exists */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2679 pat_ref_set(ref, key->str, value->str, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2680 else
2681 /* insert a new entry */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2682 pat_ref_add(ref, key->str, value->str, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2683
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2684 free_trash_chunk(key);
2685 free_trash_chunk(value);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2686 break;
2687 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]2688
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]2689 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]2690 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
2691 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]2692
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]2693 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]2694 case ACT_RET_ERR:
2695 case ACT_RET_CONT:
2696 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]2697 case ACT_RET_STOP:
2698 return HTTP_RULE_RES_DONE;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]2699 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]2700 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]2701 return HTTP_RULE_RES_YIELD;
2702 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]2703 break;
2704
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2705 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]2706 /* Note: only the first valid tracking parameter of each
2707 * applies.
2708 */
2709
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]2710 if (stkctr_entry(&s->stkctr[http_trk_idx(rule->action)]) == NULL) {
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]2711 struct stktable *t;
2712 struct stksess *ts;
2713 struct stktable_key *key;
2714 void *ptr;
2715
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]2716 t = rule->arg.trk_ctr.table.t;
2717 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]2718
2719 if (key && (ts = stktable_get_entry(t, key))) {
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]2720 stream_track_stkctr(&s->stkctr[http_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]2721
2722 /* let's count a new HTTP request as it's the first time we do it */
2723 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
2724 if (ptr)
2725 stktable_data_cast(ptr, http_req_cnt)++;
2726
2727 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
2728 if (ptr)
2729 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
2730 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
2731
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]2732 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2733 if (sess->fe != s->be)
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]2734 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]2735 }
2736 }
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]2737 break;
2738
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]2739 /* other flags exists, but normaly, they never be matched. */
2740 default:
2741 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2742 }
2743 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2744
2745 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]2746 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2747}
2748
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]2749
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]2750/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
2751 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
2752 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
2753 * is returned, the process can continue the evaluation of next rule list. If
2754 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
2755 * is returned, it means the operation could not be processed and a server error
2756 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
2757 * deny rule. If *YIELD is returned, the caller must call again the function
2758 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]2759 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]2760static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]2761http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]2762{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2763 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]2764 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2765 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]2766 struct act_rule *rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]2767 struct hdr_ctx ctx;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]2768 int act_flags = 0;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]2769
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]2770 /* If "the current_rule_list" match the executed rule list, we are in
2771 * resume condition. If a resume is needed it is always in the action
2772 * and never in the ACL or converters. In this case, we initialise the
2773 * current rule, and go to the action execution point.
2774 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]2775 if (s->current_rule) {
2776 rule = s->current_rule;
2777 s->current_rule = NULL;
2778 if (s->current_rule_list == rules)
2779 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]2780 }
2781 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]2782
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]2783 list_for_each_entry(rule, rules, list) {
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]2784
2785 /* check optional condition */
2786 if (rule->cond) {
2787 int ret;
2788
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2789 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]2790 ret = acl_pass(ret);
2791
2792 if (rule->cond->pol == ACL_COND_UNLESS)
2793 ret = !ret;
2794
2795 if (!ret) /* condition not matched */
2796 continue;
2797 }
2798
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]2799 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]2800resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]2801 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2802 case ACT_ACTION_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]2803 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]2804
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2805 case ACT_ACTION_DENY:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]2806 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]2807 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]2808
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2809 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]2810 s->task->nice = rule->arg.nice;
2811 break;
2812
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2813 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2814 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreau585744b2017-08-24 14:31:19 +0200[diff] [blame]2815 inet_set_tos(cli_conn->handle.fd, &cli_conn->addr.from, rule->arg.tos);
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]2816 break;
2817
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2818 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]2819#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2820 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreau585744b2017-08-24 14:31:19 +0200[diff] [blame]2821 setsockopt(cli_conn->handle.fd, SOL_SOCKET, SO_MARK, &rule->arg.mark, sizeof(rule->arg.mark));
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]2822#endif
2823 break;
2824
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2825 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]2826 s->logs.level = rule->arg.loglevel;
2827 break;
2828
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2829 case ACT_HTTP_REPLACE_HDR:
2830 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]2831 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
2832 rule->arg.hdr_add.name_len,
2833 &rule->arg.hdr_add.fmt,
2834 &rule->arg.hdr_add.re, rule->action))
Christopher Fauletcdade942017-02-08 12:41:31 +0100[diff] [blame]2835 return HTTP_RULE_RES_BADREQ;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]2836 break;
2837
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2838 case ACT_HTTP_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]2839 ctx.idx = 0;
2840 /* remove all occurrences of the header */
2841 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
2842 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
2843 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
2844 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]2845 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]2846
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2847 case ACT_HTTP_SET_HDR:
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2848 case ACT_HTTP_ADD_HDR: {
2849 struct chunk *replace;
2850
2851 replace = alloc_trash_chunk();
2852 if (!replace)
2853 return HTTP_RULE_RES_BADREQ;
2854
2855 chunk_printf(replace, "%s: ", rule->arg.hdr_add.name);
2856 memcpy(replace->str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
2857 replace->len = rule->arg.hdr_add.name_len;
2858 replace->str[replace->len++] = ':';
2859 replace->str[replace->len++] = ' ';
2860 replace->len += build_logline(s, replace->str + replace->len, replace->size - replace->len,
2861 &rule->arg.hdr_add.fmt);
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]2862
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2863 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]2864 /* remove all occurrences of the header */
2865 ctx.idx = 0;
2866 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
2867 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
2868 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
2869 }
2870 }
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2871 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, replace->str, replace->len);
2872
2873 free_trash_chunk(replace);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]2874 break;
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2875 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2876
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2877 case ACT_HTTP_DEL_ACL:
2878 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2879 struct pat_ref *ref;
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2880 struct chunk *key;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2881
2882 /* collect reference */
2883 ref = pat_ref_lookup(rule->arg.map.ref);
2884 if (!ref)
2885 continue;
2886
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2887 /* allocate key */
2888 key = alloc_trash_chunk();
2889 if (!key)
2890 return HTTP_RULE_RES_BADREQ;
2891
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2892 /* collect key */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2893 key->len = build_logline(s, key->str, key->size, &rule->arg.map.key);
2894 key->str[key->len] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2895
2896 /* perform update */
2897 /* returned code: 1=ok, 0=ko */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2898 pat_ref_delete(ref, key->str);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2899
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2900 free_trash_chunk(key);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2901 break;
2902 }
2903
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2904 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2905 struct pat_ref *ref;
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2906 struct chunk *key;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2907
2908 /* collect reference */
2909 ref = pat_ref_lookup(rule->arg.map.ref);
2910 if (!ref)
2911 continue;
2912
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2913 /* allocate key */
2914 key = alloc_trash_chunk();
2915 if (!key)
2916 return HTTP_RULE_RES_BADREQ;
2917
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2918 /* collect key */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2919 key->len = build_logline(s, key->str, key->size, &rule->arg.map.key);
2920 key->str[key->len] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2921
2922 /* perform update */
2923 /* check if the entry already exists */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2924 if (pat_ref_find_elt(ref, key->str) == NULL)
2925 pat_ref_add(ref, key->str, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2926
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2927 free_trash_chunk(key);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2928 break;
2929 }
2930
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2931 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2932 struct pat_ref *ref;
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2933 struct chunk *key, *value;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2934
2935 /* collect reference */
2936 ref = pat_ref_lookup(rule->arg.map.ref);
2937 if (!ref)
2938 continue;
2939
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2940 /* allocate key */
2941 key = alloc_trash_chunk();
2942 if (!key)
2943 return HTTP_RULE_RES_BADREQ;
2944
2945 /* allocate value */
2946 value = alloc_trash_chunk();
2947 if (!value) {
2948 free_trash_chunk(key);
2949 return HTTP_RULE_RES_BADREQ;
2950 }
2951
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2952 /* collect key */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2953 key->len = build_logline(s, key->str, key->size, &rule->arg.map.key);
2954 key->str[key->len] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2955
2956 /* collect value */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2957 value->len = build_logline(s, value->str, value->size, &rule->arg.map.value);
2958 value->str[value->len] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2959
2960 /* perform update */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2961 if (pat_ref_find_elt(ref, key->str) != NULL)
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2962 /* update entry if it exists */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2963 pat_ref_set(ref, key->str, value->str, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2964 else
2965 /* insert a new entry */
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2966 pat_ref_add(ref, key->str, value->str, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2967
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]2968 free_trash_chunk(key);
2969 free_trash_chunk(value);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]2970 break;
2971 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]2972
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]2973 case ACT_HTTP_REDIR:
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]2974 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
2975 return HTTP_RULE_RES_BADREQ;
2976 return HTTP_RULE_RES_DONE;
2977
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]2978 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
2979 /* Note: only the first valid tracking parameter of each
2980 * applies.
2981 */
2982
2983 if (stkctr_entry(&s->stkctr[http_trk_idx(rule->action)]) == NULL) {
2984 struct stktable *t;
2985 struct stksess *ts;
2986 struct stktable_key *key;
2987 void *ptr;
2988
2989 t = rule->arg.trk_ctr.table.t;
2990 key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_RES | SMP_OPT_FINAL, rule->arg.trk_ctr.expr, NULL);
2991
2992 if (key && (ts = stktable_get_entry(t, key))) {
2993 stream_track_stkctr(&s->stkctr[http_trk_idx(rule->action)], t, ts);
2994
2995 /* let's count a new HTTP request as it's the first time we do it */
2996 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
2997 if (ptr)
2998 stktable_data_cast(ptr, http_req_cnt)++;
2999
3000 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3001 if (ptr)
3002 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3003 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3004
3005 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
3006 if (sess->fe != s->be)
3007 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3008
3009 /* When the client triggers a 4xx from the server, it's most often due
3010 * to a missing object or permission. These events should be tracked
3011 * because if they happen often, it may indicate a brute force or a
3012 * vulnerability scan. Normally this is done when receiving the response
3013 * but here we're tracking after this ought to have been done so we have
3014 * to do it on purpose.
3015 */
Willy Tarreau3146a4c2016-07-26 15:22:33 +0200[diff] [blame]3016 if ((unsigned)(txn->status - 400) < 100) {
3017 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_CNT);
3018 if (ptr)
3019 stktable_data_cast(ptr, http_err_cnt)++;
3020
3021 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_RATE);
3022 if (ptr)
3023 update_freq_ctr_period(&stktable_data_cast(ptr, http_err_rate),
3024 t->data_arg[STKTABLE_DT_HTTP_ERR_RATE].u, 1);
3025 }
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3026 }
3027 }
3028 break;
3029
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3030 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3031 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3032 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3033
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3034 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3035 case ACT_RET_ERR:
3036 case ACT_RET_CONT:
3037 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3038 case ACT_RET_STOP:
3039 return HTTP_RULE_RES_STOP;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3040 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3041 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3042 return HTTP_RULE_RES_YIELD;
3043 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3044 break;
3045
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3046 /* other flags exists, but normaly, they never be matched. */
3047 default:
3048 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3049 }
3050 }
3051
3052 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3053 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3054}
3055
3056
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3057/* Perform an HTTP redirect based on the information in <rule>. The function
3058 * returns non-zero on success, or zero in case of a, irrecoverable error such
3059 * as too large a request to build a valid response.
3060 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3061static 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]3062{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3063 struct http_msg *req = &txn->req;
3064 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3065 const char *msg_fmt;
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3066 struct chunk *chunk;
3067 int ret = 0;
3068
3069 chunk = alloc_trash_chunk();
3070 if (!chunk)
3071 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3072
3073 /* build redirect message */
3074 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3075 case 308:
3076 msg_fmt = HTTP_308;
3077 break;
3078 case 307:
3079 msg_fmt = HTTP_307;
3080 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3081 case 303:
3082 msg_fmt = HTTP_303;
3083 break;
3084 case 301:
3085 msg_fmt = HTTP_301;
3086 break;
3087 case 302:
3088 default:
3089 msg_fmt = HTTP_302;
3090 break;
3091 }
3092
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3093 if (unlikely(!chunk_strcpy(chunk, msg_fmt)))
3094 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3095
3096 switch(rule->type) {
3097 case REDIRECT_TYPE_SCHEME: {
3098 const char *path;
3099 const char *host;
3100 struct hdr_ctx ctx;
3101 int pathlen;
3102 int hostlen;
3103
3104 host = "";
3105 hostlen = 0;
3106 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3107 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3108 host = ctx.line + ctx.val;
3109 hostlen = ctx.vlen;
3110 }
3111
3112 path = http_get_path(txn);
3113 /* build message using path */
3114 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3115 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]3116 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3117 int qs = 0;
3118 while (qs < pathlen) {
3119 if (path[qs] == '?') {
3120 pathlen = qs;
3121 break;
3122 }
3123 qs++;
3124 }
3125 }
3126 } else {
3127 path = "/";
3128 pathlen = 1;
3129 }
3130
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3131 if (rule->rdr_str) { /* this is an old "redirect" rule */
3132 /* check if we can add scheme + "://" + host + path */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3133 if (chunk->len + rule->rdr_len + 3 + hostlen + pathlen > chunk->size - 4)
3134 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3135
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3136 /* add scheme */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3137 memcpy(chunk->str + chunk->len, rule->rdr_str, rule->rdr_len);
3138 chunk->len += rule->rdr_len;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3139 }
3140 else {
3141 /* add scheme with executing log format */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3142 chunk->len += build_logline(s, chunk->str + chunk->len, chunk->size - chunk->len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3143
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3144 /* check if we can add scheme + "://" + host + path */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3145 if (chunk->len + 3 + hostlen + pathlen > chunk->size - 4)
3146 goto leave;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3147 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3148 /* add "://" */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3149 memcpy(chunk->str + chunk->len, "://", 3);
3150 chunk->len += 3;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3151
3152 /* add host */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3153 memcpy(chunk->str + chunk->len, host, hostlen);
3154 chunk->len += hostlen;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3155
3156 /* add path */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3157 memcpy(chunk->str + chunk->len, path, pathlen);
3158 chunk->len += pathlen;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3159
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3160 /* append a slash at the end of the location if needed and missing */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3161 if (chunk->len && chunk->str[chunk->len - 1] != '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3162 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3163 if (chunk->len > chunk->size - 5)
3164 goto leave;
3165 chunk->str[chunk->len] = '/';
3166 chunk->len++;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3167 }
3168
3169 break;
3170 }
3171 case REDIRECT_TYPE_PREFIX: {
3172 const char *path;
3173 int pathlen;
3174
3175 path = http_get_path(txn);
3176 /* build message using path */
3177 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3178 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]3179 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3180 int qs = 0;
3181 while (qs < pathlen) {
3182 if (path[qs] == '?') {
3183 pathlen = qs;
3184 break;
3185 }
3186 qs++;
3187 }
3188 }
3189 } else {
3190 path = "/";
3191 pathlen = 1;
3192 }
3193
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3194 if (rule->rdr_str) { /* this is an old "redirect" rule */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3195 if (chunk->len + rule->rdr_len + pathlen > chunk->size - 4)
3196 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3197
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3198 /* add prefix. Note that if prefix == "/", we don't want to
3199 * add anything, otherwise it makes it hard for the user to
3200 * configure a self-redirection.
3201 */
3202 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3203 memcpy(chunk->str + chunk->len, rule->rdr_str, rule->rdr_len);
3204 chunk->len += rule->rdr_len;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3205 }
3206 }
3207 else {
3208 /* add prefix with executing log format */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3209 chunk->len += build_logline(s, chunk->str + chunk->len, chunk->size - chunk->len, &rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3210
3211 /* Check length */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3212 if (chunk->len + pathlen > chunk->size - 4)
3213 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3214 }
3215
3216 /* add path */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3217 memcpy(chunk->str + chunk->len, path, pathlen);
3218 chunk->len += pathlen;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3219
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3220 /* append a slash at the end of the location if needed and missing */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3221 if (chunk->len && chunk->str[chunk->len - 1] != '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3222 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3223 if (chunk->len > chunk->size - 5)
3224 goto leave;
3225 chunk->str[chunk->len] = '/';
3226 chunk->len++;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3227 }
3228
3229 break;
3230 }
3231 case REDIRECT_TYPE_LOCATION:
3232 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3233 if (rule->rdr_str) { /* this is an old "redirect" rule */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3234 if (chunk->len + rule->rdr_len > chunk->size - 4)
3235 goto leave;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3236
3237 /* add location */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3238 memcpy(chunk->str + chunk->len, rule->rdr_str, rule->rdr_len);
3239 chunk->len += rule->rdr_len;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3240 }
3241 else {
3242 /* add location with executing log format */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3243 chunk->len += build_logline(s, chunk->str + chunk->len, chunk->size - chunk->len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3244
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3245 /* Check left length */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3246 if (chunk->len > chunk->size - 4)
3247 goto leave;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3248 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3249 break;
3250 }
3251
3252 if (rule->cookie_len) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3253 memcpy(chunk->str + chunk->len, "\r\nSet-Cookie: ", 14);
3254 chunk->len += 14;
3255 memcpy(chunk->str + chunk->len, rule->cookie_str, rule->cookie_len);
3256 chunk->len += rule->cookie_len;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3257 }
3258
Willy Tarreau19b14122017-02-28 09:48:11 +0100[diff] [blame]3259 /* add end of headers and the keep-alive/close status. */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3260 txn->status = rule->code;
3261 /* let's log the request time */
3262 s->logs.tv_request = now;
3263
Christopher Fauletbe821b92017-03-30 11:21:53 +0200[diff] [blame]3264 if (((!(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]3265 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3266 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3267 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3268 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3269 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3270 memcpy(chunk->str + chunk->len, "\r\nProxy-Connection: keep-alive", 30);
3271 chunk->len += 30;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3272 } else {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3273 memcpy(chunk->str + chunk->len, "\r\nConnection: keep-alive", 24);
3274 chunk->len += 24;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3275 }
3276 }
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3277 memcpy(chunk->str + chunk->len, "\r\n\r\n", 4);
3278 chunk->len += 4;
3279 FLT_STRM_CB(s, flt_http_reply(s, txn->status, chunk));
Willy Tarreau06d80a92017-10-19 14:32:15 +0200[diff] [blame]3280 co_inject(res->chn, chunk->str, chunk->len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3281 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3282 bi_fast_delete(req->chn->buf, req->sov);
3283 req->next -= req->sov;
3284 req->sov = 0;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]3285 s->req.analysers = AN_REQ_HTTP_XFER_BODY | (s->req.analysers & AN_REQ_FLT_END);
Christopher Faulet014e39c2017-03-10 13:52:30 +0100[diff] [blame]3286 s->res.analysers = AN_RES_HTTP_XFER_BODY | (s->res.analysers & AN_RES_FLT_END);
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3287 req->msg_state = HTTP_MSG_CLOSED;
3288 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3289 /* Trim any possible response */
3290 res->chn->buf->i = 0;
3291 res->next = res->sov = 0;
Christopher Faulet5d468ca2017-09-11 09:27:29 +0200[diff] [blame]3292 /* let the server side turn to SI_ST_CLO */
3293 channel_shutw_now(req->chn);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3294 } else {
3295 /* keep-alive not possible */
3296 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3297 memcpy(chunk->str + chunk->len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3298 chunk->len += 29;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3299 } else {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3300 memcpy(chunk->str + chunk->len, "\r\nConnection: close\r\n\r\n", 23);
3301 chunk->len += 23;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3302 }
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3303 http_reply_and_close(s, txn->status, chunk);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]3304 req->chn->analysers &= AN_REQ_FLT_END;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3305 }
3306
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3307 if (!(s->flags & SF_ERR_MASK))
3308 s->flags |= SF_ERR_LOCAL;
3309 if (!(s->flags & SF_FINST_MASK))
3310 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3311
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]3312 ret = 1;
3313 leave:
3314 free_trash_chunk(chunk);
3315 return ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3316}
3317
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3318/* This stream analyser runs all HTTP request processing which is common to
3319 * frontends and backends, which means blocking ACLs, filters, connection-close,
3320 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3321 * 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]3322 * either needs more data or wants to immediately abort the request (eg: deny,
3323 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3324 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3325int 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]3326{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3327 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3328 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3329 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3330 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3331 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3332 enum rule_result verdict;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3333 int deny_status = HTTP_ERR_403;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3334
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3335 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3336 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3337 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3338 }
3339
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3340 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]3341 now_ms, __FUNCTION__,
3342 s,
3343 req,
3344 req->rex, req->wex,
3345 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3346 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3347 req->analysers);
3348
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]3349 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3350 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]3351
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3352 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3353 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3354 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, &deny_status);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]3355
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3356 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3357 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
3358 goto return_prx_yield;
3359
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3360 case HTTP_RULE_RES_CONT:
3361 case HTTP_RULE_RES_STOP: /* nothing to do */
3362 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3363
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3364 case HTTP_RULE_RES_DENY: /* deny or tarpit */
3365 if (txn->flags & TX_CLTARPIT)
3366 goto tarpit;
3367 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3368
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3369 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
3370 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3371
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3372 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3373 goto done;
3374
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3375 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
3376 goto return_bad_req;
3377 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3378 }
3379
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3380 /* OK at this stage, we know that the request was accepted according to
3381 * the http-request rules, we can check for the stats. Note that the
3382 * URI is detected *before* the req* rules in order not to be affected
3383 * by a possible reqrep, while they are processed *after* so that a
3384 * reqdeny can still block them. This clearly needs to change in 1.6!
3385 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3386 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3387 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3388 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3389 txn->status = 500;
3390 s->logs.tv_request = now;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]3391 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3392
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3393 if (!(s->flags & SF_ERR_MASK))
3394 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3395 goto return_prx_cond;
3396 }
3397
3398 /* parse the whole stats request and extract the relevant information */
3399 http_handle_stats(s, req);
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3400 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]3401 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3402
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3403 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
3404 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3405
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3406 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
3407 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3408 }
3409
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3410 /* evaluate the req* rules except reqadd */
3411 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3412 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3413 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3414
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3415 if (txn->flags & TX_CLDENY)
3416 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3417
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]3418 if (txn->flags & TX_CLTARPIT) {
3419 deny_status = HTTP_ERR_500;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3420 goto tarpit;
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]3421 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3422 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3423
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3424 /* add request headers from the rule sets in the same order */
3425 list_for_each_entry(wl, &px->req_add, list) {
3426 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3427 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]3428 ret = acl_pass(ret);
3429 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3430 ret = !ret;
3431 if (!ret)
3432 continue;
3433 }
3434
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3435 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3436 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3437 }
3438
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3439
3440 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3441 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3442 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3443 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
3444 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3445
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3446 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
3447 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
3448 if (!(s->flags & SF_FINST_MASK))
3449 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3450
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]3451 /* enable the minimally required analyzers to handle keep-alive and compression on the HTTP response */
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]3452 req->analysers &= (AN_REQ_HTTP_BODY | AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END);
3453 req->analysers &= ~AN_REQ_FLT_XFER_DATA;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]3454 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3455 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3456 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3457
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3458 /* check whether we have some ACLs set to redirect this request */
3459 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3460 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3461 int ret;
3462
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3463 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]3464 ret = acl_pass(ret);
3465 if (rule->cond->pol == ACL_COND_UNLESS)
3466 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3467 if (!ret)
3468 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3469 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3470 if (!http_apply_redirect_rule(rule, s, txn))
3471 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3472 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3473 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3474
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3475 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3476 * If this happens, then the data will not come immediately, so we must
3477 * send all what we have without waiting. Note that due to the small gain
3478 * 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]3479 * 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]3480 * itself once used.
3481 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3482 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3483
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3484 done: /* done with this analyser, continue with next ones that the calling
3485 * points will have set, if any.
3486 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3487 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]3488 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
3489 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3490 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3491
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3492 tarpit:
Willy Tarreau6a0bca92017-06-11 17:56:27 +0200[diff] [blame]3493 /* Allow cookie logging
3494 */
3495 if (s->be->cookie_name || sess->fe->capture_name)
3496 manage_client_side_cookies(s, req);
3497
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3498 /* When a connection is tarpitted, we use the tarpit timeout,
3499 * which may be the same as the connect timeout if unspecified.
3500 * If unset, then set it to zero because we really want it to
3501 * eventually expire. We build the tarpit as an analyser.
3502 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]3503 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3504
3505 /* wipe the request out so that we can drop the connection early
3506 * if the client closes first.
3507 */
3508 channel_dont_connect(req);
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]3509
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]3510 txn->status = http_err_codes[deny_status];
3511
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]3512 req->analysers &= AN_REQ_FLT_END; /* remove switching rules etc... */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3513 req->analysers |= AN_REQ_HTTP_TARPIT;
3514 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3515 if (!req->analyse_exp)
3516 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3517 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3518 sess->fe->fe_counters.denied_req++;
3519 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3520 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3521 if (sess->listener->counters)
3522 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]3523 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3524
3525 deny: /* this request was blocked (denied) */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]3526
3527 /* Allow cookie logging
3528 */
3529 if (s->be->cookie_name || sess->fe->capture_name)
3530 manage_client_side_cookies(s, req);
3531
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3532 txn->flags |= TX_CLDENY;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3533 txn->status = http_err_codes[deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3534 s->logs.tv_request = now;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]3535 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3536 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3537 sess->fe->fe_counters.denied_req++;
3538 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3539 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3540 if (sess->listener->counters)
3541 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3542 goto return_prx_cond;
3543
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3544 return_bad_req:
3545 /* We centralize bad requests processing here */
3546 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3547 /* we detected a parsing error. We want to archive this request
3548 * in the dedicated proxy area for later troubleshooting.
3549 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]3550 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, sess->fe);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3551 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3552
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]3553 txn->req.err_state = txn->req.msg_state;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3554 txn->req.msg_state = HTTP_MSG_ERROR;
3555 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]3556 http_reply_and_close(s, txn->status, http_error_message(s));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3557
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3558 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3559 if (sess->listener->counters)
3560 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3561
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3562 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3563 if (!(s->flags & SF_ERR_MASK))
3564 s->flags |= SF_ERR_PRXCOND;
3565 if (!(s->flags & SF_FINST_MASK))
3566 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3567
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]3568 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3569 req->analyse_exp = TICK_ETERNITY;
3570 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3571
3572 return_prx_yield:
3573 channel_dont_connect(req);
3574 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3575}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3576
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3577/* This function performs all the processing enabled for the current request.
3578 * It returns 1 if the processing can continue on next analysers, or zero if it
3579 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]3580 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3581 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3582int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3583{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3584 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3585 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3586 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]3587 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3588
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3589 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3590 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3591 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3592 return 0;
3593 }
3594
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3595 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]3596 now_ms, __FUNCTION__,
3597 s,
3598 req,
3599 req->rex, req->wex,
3600 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3601 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3602 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3603
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3604 /*
3605 * Right now, we know that we have processed the entire headers
3606 * and that unwanted requests have been filtered out. We can do
3607 * whatever we want with the remaining request. Also, now we
3608 * may have separate values for ->fe, ->be.
3609 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3610
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3611 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3612 * If HTTP PROXY is set we simply get remote server address parsing
3613 * incoming request. Note that this requires that a connection is
3614 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3615 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3616 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3617 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3618 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3619
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]3620 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau973a5422015-08-05 21:47:23 +0200[diff] [blame]3621 if (unlikely((conn = si_alloc_conn(&s->si[1])) == NULL)) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]3622 txn->req.err_state = txn->req.msg_state;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3623 txn->req.msg_state = HTTP_MSG_ERROR;
3624 txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]3625 req->analysers &= AN_REQ_FLT_END;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]3626 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3627
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3628 if (!(s->flags & SF_ERR_MASK))
3629 s->flags |= SF_ERR_RESOURCE;
3630 if (!(s->flags & SF_FINST_MASK))
3631 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3632
3633 return 0;
3634 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3635
3636 path = http_get_path(txn);
3637 url2sa(req->buf->p + msg->sl.rq.u,
3638 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]3639 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3640 /* if the path was found, we have to remove everything between
3641 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
3642 * found, we need to replace from req->buf->p + msg->sl.rq.u for
3643 * u_l characters by a single "/".
3644 */
3645 if (path) {
3646 char *cur_ptr = req->buf->p;
3647 char *cur_end = cur_ptr + txn->req.sl.rq.l;
3648 int delta;
3649
3650 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
3651 http_msg_move_end(&txn->req, delta);
3652 cur_end += delta;
3653 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
3654 goto return_bad_req;
3655 }
3656 else {
3657 char *cur_ptr = req->buf->p;
3658 char *cur_end = cur_ptr + txn->req.sl.rq.l;
3659 int delta;
3660
3661 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
3662 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
3663 http_msg_move_end(&txn->req, delta);
3664 cur_end += delta;
3665 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
3666 goto return_bad_req;
3667 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3668 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3669
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3670 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3671 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3672 * Note that doing so might move headers in the request, but
3673 * the fields will stay coherent and the URI will not move.
3674 * This should only be performed in the backend.
3675 */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]3676 if (s->be->cookie_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3677 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3678
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3679 /* add unique-id if "header-unique-id" is specified */
3680
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]3681 if (!LIST_ISEMPTY(&sess->fe->format_unique_id) && !s->unique_id) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]3682 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
3683 goto return_bad_req;
3684 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3685 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]3686 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3687
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3688 if (sess->fe->header_unique_id && s->unique_id) {
3689 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3690 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3691 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3692 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]3693 goto return_bad_req;
3694 }
3695
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3696 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3697 * 9: add X-Forwarded-For if either the frontend or the backend
3698 * asks for it.
3699 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3700 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3701 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3702 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
3703 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
3704 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]3705 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3706 /* The header is set to be added only if none is present
3707 * and we found it, so don't do anything.
3708 */
3709 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3710 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3711 /* Add an X-Forwarded-For header unless the source IP is
3712 * in the 'except' network range.
3713 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3714 if ((!sess->fe->except_mask.s_addr ||
3715 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
3716 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3717 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3718 (((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]3719 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3720 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3721 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3722 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3723
3724 /* Note: we rely on the backend to get the header name to be used for
3725 * x-forwarded-for, because the header is really meant for the backends.
3726 * However, if the backend did not specify any option, we have to rely
3727 * on the frontend's header name.
3728 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3729 if (s->be->fwdfor_hdr_len) {
3730 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3731 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3732 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3733 len = sess->fe->fwdfor_hdr_len;
3734 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3735 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]3736 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]3737
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3738 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]3739 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3740 }
3741 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3742 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3743 /* FIXME: for the sake of completeness, we should also support
3744 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3745 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3746 int len;
3747 char pn[INET6_ADDRSTRLEN];
3748 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3749 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3750 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3751
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3752 /* Note: we rely on the backend to get the header name to be used for
3753 * x-forwarded-for, because the header is really meant for the backends.
3754 * However, if the backend did not specify any option, we have to rely
3755 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3756 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3757 if (s->be->fwdfor_hdr_len) {
3758 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3759 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3760 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3761 len = sess->fe->fwdfor_hdr_len;
3762 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3763 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]3764 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3765
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3766 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]3767 goto return_bad_req;
3768 }
3769 }
3770
3771 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3772 * 10: add X-Original-To if either the frontend or the backend
3773 * asks for it.
3774 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3775 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3776
3777 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3778 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3779 /* Add an X-Original-To header unless the destination IP is
3780 * in the 'except' network range.
3781 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3782 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3783
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3784 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3785 ((!sess->fe->except_mask_to.s_addr ||
3786 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
3787 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3788 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3789 (((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]3790 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3791 int len;
3792 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3793 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3794
3795 /* Note: we rely on the backend to get the header name to be used for
3796 * x-original-to, because the header is really meant for the backends.
3797 * However, if the backend did not specify any option, we have to rely
3798 * on the frontend's header name.
3799 */
3800 if (s->be->orgto_hdr_len) {
3801 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3802 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3803 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3804 len = sess->fe->orgto_hdr_len;
3805 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3806 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]3807 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]3808
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3809 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]3810 goto return_bad_req;
3811 }
3812 }
3813 }
3814
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3815 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3816 * If an "Upgrade" token is found, the header is left untouched in order not to have
3817 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3818 * "Upgrade" is present in the Connection header.
3819 */
3820 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3821 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3822 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]3823 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3824 unsigned int want_flags = 0;
3825
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3826 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3827 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3828 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]3829 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3830 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3831 want_flags |= TX_CON_CLO_SET;
3832 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3833 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3834 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]3835 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3836 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3837 want_flags |= TX_CON_KAL_SET;
3838 }
3839
3840 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3841 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3842 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3843
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3844
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3845 /* If we have no server assigned yet and we're balancing on url_param
3846 * with a POST request, we may be interested in checking the body for
3847 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3848 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3849 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3850 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3851 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3852 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3853 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3854 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3855
Christopher Fauletbe821b92017-03-30 11:21:53 +0200[diff] [blame]3856 req->analysers &= ~AN_REQ_FLT_XFER_DATA;
3857 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3858#ifdef TCP_QUICKACK
Christopher Fauletbe821b92017-03-30 11:21:53 +0200[diff] [blame]3859 /* We expect some data from the client. Unless we know for sure
3860 * we already have a full request, we have to re-enable quick-ack
3861 * in case we previously disabled it, otherwise we might cause
3862 * the client to delay further data.
3863 */
3864 if ((sess->listener->options & LI_O_NOQUICKACK) &&
3865 cli_conn && conn_ctrl_ready(cli_conn) &&
3866 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
3867 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau585744b2017-08-24 14:31:19 +0200[diff] [blame]3868 setsockopt(cli_conn->handle.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3869#endif
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3870
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3871 /*************************************************************
3872 * OK, that's finished for the headers. We have done what we *
3873 * could. Let's switch to the DATA state. *
3874 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3875 req->analyse_exp = TICK_ETERNITY;
3876 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3877
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3878 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3879 /* OK let's go on with the BODY now */
3880 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3881
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3882 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3883 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3884 /* we detected a parsing error. We want to archive this request
3885 * in the dedicated proxy area for later troubleshooting.
3886 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]3887 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, sess->fe);
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3888 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3889
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]3890 txn->req.err_state = txn->req.msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3891 txn->req.msg_state = HTTP_MSG_ERROR;
3892 txn->status = 400;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]3893 req->analysers &= AN_REQ_FLT_END;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]3894 http_reply_and_close(s, txn->status, http_error_message(s));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3895
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3896 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3897 if (sess->listener->counters)
3898 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3899
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3900 if (!(s->flags & SF_ERR_MASK))
3901 s->flags |= SF_ERR_PRXCOND;
3902 if (!(s->flags & SF_FINST_MASK))
3903 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3904 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3905}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3906
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3907/* This function is an analyser which processes the HTTP tarpit. It always
3908 * returns zero, at the beginning because it prevents any other processing
3909 * from occurring, and at the end because it terminates the request.
3910 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3911int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3912{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3913 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3914
3915 /* This connection is being tarpitted. The CLIENT side has
3916 * already set the connect expiration date to the right
3917 * timeout. We just have to check that the client is still
3918 * there and that the timeout has not expired.
3919 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3920 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3921 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3922 !tick_is_expired(req->analyse_exp, now_ms))
3923 return 0;
3924
3925 /* We will set the queue timer to the time spent, just for
3926 * logging purposes. We fake a 500 server error, so that the
3927 * attacker will not suspect his connection has been tarpitted.
3928 * It will not cause trouble to the logs because we can exclude
3929 * the tarpitted connections by filtering on the 'PT' status flags.
3930 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3931 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3932
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3933 if (!(req->flags & CF_READ_ERROR))
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]3934 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3935
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]3936 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3937 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3938
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3939 if (!(s->flags & SF_ERR_MASK))
3940 s->flags |= SF_ERR_PRXCOND;
3941 if (!(s->flags & SF_FINST_MASK))
3942 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3943 return 0;
3944}
3945
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]3946/* This function is an analyser which waits for the HTTP request body. It waits
3947 * for either the buffer to be full, or the full advertised contents to have
3948 * reached the buffer. It must only be called after the standard HTTP request
3949 * processing has occurred, because it expects the request to be parsed and will
3950 * look for the Expect header. It may send a 100-Continue interim response. It
3951 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
3952 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
3953 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3954 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3955int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3956{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3957 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3958 struct http_txn *txn = s->txn;
3959 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3960
3961 /* We have to parse the HTTP request body to find any required data.
3962 * "balance url_param check_post" should have been the only way to get
3963 * into this. We were brought here after HTTP header analysis, so all
3964 * related structures are ready.
3965 */
3966
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]3967 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
3968 /* This is the first call */
3969 if (msg->msg_state < HTTP_MSG_BODY)
3970 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3971
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]3972 if (msg->msg_state < HTTP_MSG_100_SENT) {
3973 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3974 * send an HTTP/1.1 100 Continue intermediate response.
3975 */
3976 if (msg->flags & HTTP_MSGF_VER_11) {
3977 struct hdr_ctx ctx;
3978 ctx.idx = 0;
3979 /* Expect is allowed in 1.1, look for it */
3980 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
3981 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau06d80a92017-10-19 14:32:15 +0200[diff] [blame]3982 co_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Thierry FOURNIER / OZON.IO43ad11d2016-12-12 15:19:58 +0100[diff] [blame]3983 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]3984 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3985 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]3986 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3987 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3988
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3989 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]3990 * req->buf->p still points to the beginning of the message. We
3991 * must save the body in msg->next because it survives buffer
3992 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3993 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3994 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3995
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3996 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3997 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3998 else
3999 msg->msg_state = HTTP_MSG_DATA;
4000 }
4001
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4002 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4003 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4004 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4005 goto missing_data;
4006
4007 /* OK we have everything we need now */
4008 goto http_end;
4009 }
4010
4011 /* OK here we're parsing a chunked-encoded message */
4012
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4013 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4014 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4015 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4016 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4017 */
Willy Tarreaue56cdd32017-09-21 08:36:33 +0200[diff] [blame]4018 unsigned int chunk;
4019 int ret = h1_parse_chunk_size(req->buf, msg->next, req->buf->i, &chunk);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4020
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4021 if (!ret)
4022 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4023 else if (ret < 0) {
Willy Tarreaue56cdd32017-09-21 08:36:33 +0200[diff] [blame]4024 msg->err_pos = req->buf->i + ret;
4025 if (msg->err_pos < 0)
4026 msg->err_pos += req->buf->size;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4027 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4028 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4029 }
Willy Tarreaue56cdd32017-09-21 08:36:33 +0200[diff] [blame]4030
4031 msg->chunk_len = chunk;
4032 msg->body_len += chunk;
4033
4034 msg->sol = ret;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]4035 msg->next += ret;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4036 msg->msg_state = msg->chunk_len ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4037 }
4038
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4039 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4040 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4041 * for at least a whole chunk or the whole content length bytes after
4042 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4043 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4044 if (msg->msg_state == HTTP_MSG_TRAILERS)
4045 goto http_end;
4046
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4047 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4048 goto http_end;
4049
4050 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4051 /* we get here if we need to wait for more data. If the buffer is full,
4052 * we have the maximum we can expect.
4053 */
4054 if (buffer_full(req->buf, global.tune.maxrewrite))
4055 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4056
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4057 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4058 txn->status = 408;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4059 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4060
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4061 if (!(s->flags & SF_ERR_MASK))
4062 s->flags |= SF_ERR_CLITO;
4063 if (!(s->flags & SF_FINST_MASK))
4064 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4065 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4066 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4067
4068 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4069 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4070 /* Not enough data. We'll re-use the http-request
4071 * timeout here. Ideally, we should set the timeout
4072 * relative to the accept() date. We just set the
4073 * request timeout once at the beginning of the
4074 * request.
4075 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4076 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4077 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4078 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4079 return 0;
4080 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4081
4082 http_end:
4083 /* The situation will not evolve, so let's give up on the analysis. */
4084 s->logs.tv_request = now; /* update the request timer to reflect full request */
4085 req->analysers &= ~an_bit;
4086 req->analyse_exp = TICK_ETERNITY;
4087 return 1;
4088
4089 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4090 txn->req.err_state = txn->req.msg_state;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4091 txn->req.msg_state = HTTP_MSG_ERROR;
4092 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4093 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4094
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4095 if (!(s->flags & SF_ERR_MASK))
4096 s->flags |= SF_ERR_PRXCOND;
4097 if (!(s->flags & SF_FINST_MASK))
4098 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4099
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4100 return_err_msg:
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4101 req->analysers &= AN_REQ_FLT_END;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4102 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4103 if (sess->listener->counters)
4104 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4105 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4106}
4107
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4108/* send a server's name with an outgoing request over an established connection.
4109 * Note: this function is designed to be called once the request has been scheduled
4110 * for being forwarded. This is the reason why it rewinds the buffer before
4111 * proceeding.
4112 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4113int 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]4114
4115 struct hdr_ctx ctx;
4116
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4117 char *hdr_name = be->server_id_hdr_name;
4118 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4119 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4120 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4121 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4122
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4123 ctx.idx = 0;
4124
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4125 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4126 if (old_o) {
4127 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4128 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4129 txn->req.next += old_o;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4130 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4131 }
4132
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4133 old_i = chn->buf->i;
4134 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]4135 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4136 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4137 }
4138
4139 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4140 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4141 memcpy(hdr_val, hdr_name, hdr_name_len);
4142 hdr_val += hdr_name_len;
4143 *hdr_val++ = ':';
4144 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4145 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4146 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]4147
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4148 if (old_o) {
4149 /* If this was a forwarded request, we must readjust the amount of
4150 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4151 * variations. Note that the current state is >= HTTP_MSG_BODY,
4152 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4153 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4154 old_o += chn->buf->i - old_i;
4155 b_adv(chn->buf, old_o);
4156 txn->req.next -= old_o;
4157 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4158 }
4159
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4160 return 0;
4161}
4162
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4163/* Terminate current transaction and prepare a new one. This is very tricky
4164 * right now but it works.
4165 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4166void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4167{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4168 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]4169 struct proxy *fe = strm_fe(s);
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4170 struct proxy *be = s->be;
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4171 struct connection *srv_conn;
4172 struct server *srv;
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]4173 unsigned int prev_flags = s->txn->flags;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4174
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4175 /* FIXME: We need a more portable way of releasing a backend's and a
4176 * server's connections. We need a safer way to reinitialize buffer
4177 * flags. We also need a more accurate method for computing per-request
4178 * data.
4179 */
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4180 srv_conn = objt_conn(s->si[1].end);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4181
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4182 /* unless we're doing keep-alive, we want to quickly close the connection
4183 * to the server.
4184 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4185 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4186 !si_conn_ready(&s->si[1])) {
4187 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4188 si_shutr(&s->si[1]);
4189 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4190 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4191
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4192 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4193 be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4194 if (unlikely(s->srv_conn))
4195 sess_change_server(s, NULL);
4196 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4197
4198 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4199 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4200
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4201 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4202 int n;
4203
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4204 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4205 if (n < 1 || n > 5)
4206 n = 0;
4207
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4208 if (fe->mode == PR_MODE_HTTP) {
4209 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4210 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4211 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4212 (be->mode == PR_MODE_HTTP)) {
4213 be->be_counters.p.http.rsp[n]++;
4214 be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4215 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4216 }
4217
4218 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4219 s->logs.bytes_in -= s->req.buf->i;
4220 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4221
4222 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4223 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4224 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4225 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4226 s->do_log(s);
4227 }
4228
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]4229 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4230 stream_stop_content_counters(s);
4231 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]4232
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4233 s->logs.accept_date = date; /* user-visible date for logging */
4234 s->logs.tv_accept = now; /* corrected date for internal use */
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200[diff] [blame]4235 s->logs.t_handshake = 0; /* There are no handshake in keep alive connection. */
4236 s->logs.t_idle = -1;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4237 tv_zero(&s->logs.tv_request);
4238 s->logs.t_queue = -1;
4239 s->logs.t_connect = -1;
4240 s->logs.t_data = -1;
4241 s->logs.t_close = 0;
4242 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4243 s->logs.srv_queue_size = 0; /* we will get this number soon */
4244
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4245 s->logs.bytes_in = s->req.total = s->req.buf->i;
4246 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4247
4248 if (s->pend_pos)
4249 pendconn_free(s->pend_pos);
4250
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4251 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4252 if (s->flags & SF_CURR_SESS) {
4253 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4254 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4255 }
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4256 if (may_dequeue_tasks(objt_server(s->target), be))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4257 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4258 }
4259
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4260 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4261
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4262 /* only release our endpoint if we don't intend to reuse the
4263 * connection.
4264 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4265 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4266 !si_conn_ready(&s->si[1])) {
4267 si_release_endpoint(&s->si[1]);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4268 srv_conn = NULL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4269 }
4270
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4271 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
4272 s->si[1].err_type = SI_ET_NONE;
4273 s->si[1].conn_retries = 0; /* used for logging too */
4274 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4275 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]4276 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);
4277 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]4278 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
4279 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
4280 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4281
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4282 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4283 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4284 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4285
4286 if (prev_status == 401 || prev_status == 407) {
4287 /* In HTTP keep-alive mode, if we receive a 401, we still have
4288 * a chance of being able to send the visitor again to the same
4289 * server over the same connection. This is required by some
4290 * broken protocols such as NTLM, and anyway whenever there is
4291 * an opportunity for sending the challenge to the proper place,
4292 * it's better to do it (at least it helps with debugging).
4293 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4294 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreaubd99d582015-09-02 10:40:43 +0200[diff] [blame]4295 if (srv_conn)
4296 srv_conn->flags |= CO_FL_PRIVATE;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4297 }
4298
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]4299 /* Never ever allow to reuse a connection from a non-reuse backend */
4300 if (srv_conn && (be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
4301 srv_conn->flags |= CO_FL_PRIVATE;
4302
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4303 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4304 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4305
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4306 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4307 s->req.flags |= CF_NEVER_WAIT;
4308 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4309 }
4310
Willy Tarreau714ea782015-11-25 20:11:11 +0100[diff] [blame]4311 /* we're removing the analysers, we MUST re-enable events detection.
4312 * We don't enable close on the response channel since it's either
4313 * already closed, or in keep-alive with an idle connection handler.
4314 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4315 channel_auto_read(&s->req);
4316 channel_auto_close(&s->req);
4317 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4318
Willy Tarreau1c59bd52015-11-02 20:20:11 +0100[diff] [blame]4319 /* we're in keep-alive with an idle connection, monitor it if not already done */
4320 if (srv_conn && LIST_ISEMPTY(&srv_conn->list)) {
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4321 srv = objt_server(srv_conn->target);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]4322 if (!srv)
4323 si_idle_conn(&s->si[1], NULL);
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]4324 else if (srv_conn->flags & CO_FL_PRIVATE)
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]4325 si_idle_conn(&s->si[1], &srv->priv_conns);
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]4326 else if (prev_flags & TX_NOT_FIRST)
4327 /* note: we check the request, not the connection, but
4328 * this is valid for strategies SAFE and AGGR, and in
4329 * case of ALWS, we don't care anyway.
4330 */
4331 si_idle_conn(&s->si[1], &srv->safe_conns);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]4332 else
4333 si_idle_conn(&s->si[1], &srv->idle_conns);
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]4334 }
Christopher Faulete6006242017-03-10 11:52:44 +0100[diff] [blame]4335 s->req.analysers = strm_li(s) ? strm_li(s)->analysers : 0;
4336 s->res.analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4337}
4338
4339
4340/* This function updates the request state machine according to the response
4341 * state machine and buffer flags. It returns 1 if it changes anything (flag
4342 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4343 * it is only used to find when a request/response couple is complete. Both
4344 * this function and its equivalent should loop until both return zero. It
4345 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4346 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4347int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4348{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4349 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4350 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4351 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4352 unsigned int old_state = txn->req.msg_state;
4353
Christopher Faulet4be98032017-07-18 10:48:24 +0200[diff] [blame]4354 if (unlikely(txn->req.msg_state < HTTP_MSG_DONE))
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4355 return 0;
4356
4357 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4358 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4359 * We can shut the read side unless we want to abort_on_close,
4360 * or we have a POST request. The issue with POST requests is
4361 * that some browsers still send a CRLF after the request, and
4362 * this CRLF must be read so that it does not remain in the kernel
4363 * buffers, otherwise a close could cause an RST on some systems
4364 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4365 * Note that if we're using keep-alive on the client side, we'd
4366 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4367 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4368 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4369 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4370 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4371 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4372 !(s->be->options & PR_O_ABRT_CLOSE) &&
4373 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4374 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4375
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4376 /* if the server closes the connection, we want to immediately react
4377 * and close the socket to save packets and syscalls.
4378 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4379 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4380
Willy Tarreau7f876a12015-11-18 11:59:55 +0100[diff] [blame]4381 /* In any case we've finished parsing the request so we must
4382 * disable Nagle when sending data because 1) we're not going
4383 * to shut this side, and 2) the server is waiting for us to
4384 * send pending data.
4385 */
4386 chn->flags |= CF_NEVER_WAIT;
4387
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4388 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4389 goto wait_other_side;
4390
4391 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4392 /* The server has not finished to respond, so we
4393 * don't want to move in order not to upset it.
4394 */
4395 goto wait_other_side;
4396 }
4397
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4398 /* When we get here, it means that both the request and the
4399 * response have finished receiving. Depending on the connection
4400 * mode, we'll have to wait for the last bytes to leave in either
4401 * direction, and sometimes for a close to be effective.
4402 */
4403
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4404 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4405 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4406 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4407 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4408 }
4409 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4410 /* Option forceclose is set, or either side wants to close,
4411 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4412 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4413 * once both states are CLOSED.
Christopher Faulet1486b0a2017-07-18 11:42:08 +0200[diff] [blame]4414 *
4415 * However, there is an exception if the response
4416 * length is undefined. In this case, we need to wait
4417 * the close from the server. The response will be
4418 * switched in TUNNEL mode until the end.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4419 */
Christopher Faulet1486b0a2017-07-18 11:42:08 +0200[diff] [blame]4420 if (!(txn->rsp.flags & HTTP_MSGF_XFER_LEN) &&
4421 txn->rsp.msg_state != HTTP_MSG_CLOSED)
4422 goto check_channel_flags;
4423
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4424 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4425 channel_shutr_now(chn);
4426 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4427 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4428 }
4429 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4430 /* The last possible modes are keep-alive and tunnel. Tunnel mode
4431 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4432 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4433 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
4434 channel_auto_read(chn);
4435 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4436 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4437 }
4438
Christopher Faulet4be98032017-07-18 10:48:24 +0200[diff] [blame]4439 goto check_channel_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4440 }
4441
4442 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4443 http_msg_closing:
4444 /* nothing else to forward, just waiting for the output buffer
4445 * to be empty and for the shutw_now to take effect.
4446 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4447 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4448 txn->req.msg_state = HTTP_MSG_CLOSED;
4449 goto http_msg_closed;
4450 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4451 else if (chn->flags & CF_SHUTW) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4452 txn->req.err_state = txn->req.msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4453 txn->req.msg_state = HTTP_MSG_ERROR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4454 }
Christopher Faulet56d26092017-07-20 11:05:10 +0200[diff] [blame]4455 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4456 }
4457
4458 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4459 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4460 /* see above in MSG_DONE why we only do this in these states */
4461 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4462 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4463 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]4464 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4465 goto wait_other_side;
4466 }
4467
Christopher Faulet4be98032017-07-18 10:48:24 +0200[diff] [blame]4468 check_channel_flags:
4469 /* Here, we are in HTTP_MSG_DONE or HTTP_MSG_TUNNEL */
4470 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
4471 /* if we've just closed an output, let's switch */
4472 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
4473 txn->req.msg_state = HTTP_MSG_CLOSING;
4474 goto http_msg_closing;
4475 }
4476
4477
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4478 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4479 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4480}
4481
4482
4483/* This function updates the response state machine according to the request
4484 * state machine and buffer flags. It returns 1 if it changes anything (flag
4485 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4486 * it is only used to find when a request/response couple is complete. Both
4487 * this function and its equivalent should loop until both return zero. It
4488 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4489 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4490int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4491{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4492 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4493 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4494 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4495 unsigned int old_state = txn->rsp.msg_state;
4496
Christopher Faulet4be98032017-07-18 10:48:24 +0200[diff] [blame]4497 if (unlikely(txn->rsp.msg_state < HTTP_MSG_DONE))
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4498 return 0;
4499
4500 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4501 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4502 * still monitor the server connection for a possible close
4503 * while the request is being uploaded, so we don't disable
4504 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4505 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4506 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4507
4508 if (txn->req.msg_state == HTTP_MSG_ERROR)
4509 goto wait_other_side;
4510
4511 if (txn->req.msg_state < HTTP_MSG_DONE) {
4512 /* The client seems to still be sending data, probably
4513 * because we got an error response during an upload.
4514 * We have the choice of either breaking the connection
4515 * or letting it pass through. Let's do the later.
4516 */
4517 goto wait_other_side;
4518 }
4519
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4520 /* When we get here, it means that both the request and the
4521 * response have finished receiving. Depending on the connection
4522 * mode, we'll have to wait for the last bytes to leave in either
4523 * direction, and sometimes for a close to be effective.
4524 */
4525
4526 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4527 /* Server-close mode : shut read and wait for the request
4528 * side to close its output buffer. The caller will detect
4529 * when we're in DONE and the other is in CLOSED and will
4530 * catch that for the final cleanup.
4531 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4532 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4533 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4534 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4535 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4536 /* Option forceclose is set, or either side wants to close,
4537 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4538 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4539 * once both states are CLOSED.
Christopher Faulet1486b0a2017-07-18 11:42:08 +0200[diff] [blame]4540 *
4541 * However, there is an exception if the response length
4542 * is undefined. In this case, we switch in TUNNEL mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4543 */
Christopher Faulet1486b0a2017-07-18 11:42:08 +0200[diff] [blame]4544 if (!(txn->rsp.flags & HTTP_MSGF_XFER_LEN)) {
4545 channel_auto_read(chn);
4546 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
4547 chn->flags |= CF_NEVER_WAIT;
4548 }
4549 else if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4550 channel_shutr_now(chn);
4551 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4552 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4553 }
4554 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4555 /* The last possible modes are keep-alive and tunnel. Tunnel will
4556 * need to forward remaining data. Keep-alive will need to monitor
4557 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4558 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4559 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4560 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4561 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
4562 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4563 }
4564
Christopher Faulet4be98032017-07-18 10:48:24 +0200[diff] [blame]4565 goto check_channel_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4566 }
4567
4568 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4569 http_msg_closing:
4570 /* nothing else to forward, just waiting for the output buffer
4571 * to be empty and for the shutw_now to take effect.
4572 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4573 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4574 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4575 goto http_msg_closed;
4576 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4577 else if (chn->flags & CF_SHUTW) {
Christopher Fauleta3992e02017-07-18 10:35:55 +0200[diff] [blame]4578 txn->rsp.err_state = txn->rsp.msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4579 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4580 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4581 if (objt_server(s->target))
4582 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4583 }
Christopher Faulet56d26092017-07-20 11:05:10 +0200[diff] [blame]4584 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4585 }
4586
4587 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4588 http_msg_closed:
4589 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]4590 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4591 channel_auto_close(chn);
4592 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4593 goto wait_other_side;
4594 }
4595
Christopher Faulet4be98032017-07-18 10:48:24 +0200[diff] [blame]4596 check_channel_flags:
4597 /* Here, we are in HTTP_MSG_DONE or HTTP_MSG_TUNNEL */
4598 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
4599 /* if we've just closed an output, let's switch */
4600 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4601 goto http_msg_closing;
4602 }
4603
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4604 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4605 /* We force the response to leave immediately if we're waiting for the
4606 * other side, since there is no pending shutdown to push it out.
4607 */
4608 if (!channel_is_empty(chn))
4609 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4610 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4611}
4612
4613
Christopher Faulet894da4c2017-07-18 11:29:07 +0200[diff] [blame]4614/* Resync the request and response state machines. */
4615void http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4616{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4617 struct http_txn *txn = s->txn;
Christopher Faulet894da4c2017-07-18 11:29:07 +0200[diff] [blame]4618#ifdef DEBUG_FULL
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4619 int old_req_state = txn->req.msg_state;
4620 int old_res_state = txn->rsp.msg_state;
Christopher Faulet894da4c2017-07-18 11:29:07 +0200[diff] [blame]4621#endif
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4622
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4623 http_sync_req_state(s);
4624 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4625 if (!http_sync_res_state(s))
4626 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4627 if (!http_sync_req_state(s))
4628 break;
4629 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]4630
Christopher Faulet894da4c2017-07-18 11:29:07 +0200[diff] [blame]4631 DPRINTF(stderr,"[%u] %s: stream=%p old=%s,%s cur=%s,%s "
4632 "req->analysers=0x%08x res->analysers=0x%08x\n",
4633 now_ms, __FUNCTION__, s,
Willy Tarreau0da5b3b2017-09-21 09:30:46 +0200[diff] [blame]4634 h1_msg_state_str(old_req_state), h1_msg_state_str(old_res_state),
4635 h1_msg_state_str(txn->req.msg_state), h1_msg_state_str(txn->rsp.msg_state),
Christopher Faulet894da4c2017-07-18 11:29:07 +0200[diff] [blame]4636 s->req.analysers, s->res.analysers);
Christopher Faulet814d2702017-03-30 11:33:44 +0200[diff] [blame]4637
4638
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4639 /* OK, both state machines agree on a compatible state.
4640 * There are a few cases we're interested in :
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4641 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4642 * directions, so let's simply disable both analysers.
Christopher Fauletf77bb532017-07-18 11:18:46 +0200[diff] [blame]4643 * - HTTP_MSG_CLOSED on the response only or HTTP_MSG_ERROR on either
4644 * means we must abort the request.
4645 * - HTTP_MSG_TUNNEL on either means we have to disable analyser on
4646 * corresponding channel.
4647 * - HTTP_MSG_DONE or HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE
4648 * on the response with server-close mode means we've completed one
4649 * request and we must re-initialize the server connection.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4650 */
Christopher Fauletf77bb532017-07-18 11:18:46 +0200[diff] [blame]4651 if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4652 txn->rsp.msg_state == HTTP_MSG_CLOSED) {
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4653 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4654 channel_auto_close(&s->req);
4655 channel_auto_read(&s->req);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4656 s->res.analysers &= AN_RES_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4657 channel_auto_close(&s->res);
4658 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4659 }
Christopher Fauletf77bb532017-07-18 11:18:46 +0200[diff] [blame]4660 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
4661 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4662 txn->req.msg_state == HTTP_MSG_ERROR) {
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4663 s->res.analysers &= AN_RES_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4664 channel_auto_close(&s->res);
4665 channel_auto_read(&s->res);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4666 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4667 channel_abort(&s->req);
4668 channel_auto_close(&s->req);
4669 channel_auto_read(&s->req);
4670 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4671 }
Christopher Fauletf77bb532017-07-18 11:18:46 +0200[diff] [blame]4672 else if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4673 txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4674 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4675 s->req.analysers &= AN_REQ_FLT_END;
4676 if (HAS_REQ_DATA_FILTERS(s))
4677 s->req.analysers |= AN_REQ_FLT_XFER_DATA;
4678 }
4679 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4680 s->res.analysers &= AN_RES_FLT_END;
4681 if (HAS_RSP_DATA_FILTERS(s))
4682 s->res.analysers |= AN_RES_FLT_XFER_DATA;
4683 }
4684 channel_auto_close(&s->req);
4685 channel_auto_read(&s->req);
4686 channel_auto_close(&s->res);
4687 channel_auto_read(&s->res);
4688 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4689 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
4690 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4691 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4692 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4693 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4694 /* server-close/keep-alive: terminate this transaction,
4695 * possibly killing the server connection and reinitialize
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]4696 * a fresh-new transaction, but only once we're sure there's
4697 * enough room in the request and response buffer to process
Christopher Fauletc0c672a2017-03-28 11:51:33 +0200[diff] [blame]4698 * another request. They must not hold any pending output data
4699 * and the response buffer must realigned
4700 * (realign is done is http_end_txn_clean_session).
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4701 */
Christopher Faulet894da4c2017-07-18 11:29:07 +0200[diff] [blame]4702 if (s->req.buf->o)
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]4703 s->req.flags |= CF_WAKE_WRITE;
Christopher Faulet894da4c2017-07-18 11:29:07 +0200[diff] [blame]4704 else if (s->res.buf->o)
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]4705 s->res.flags |= CF_WAKE_WRITE;
Christopher Fauleta81ff602017-07-18 22:01:05 +0200[diff] [blame]4706 else {
4707 s->req.analysers = AN_REQ_FLT_END;
4708 s->res.analysers = AN_RES_FLT_END;
4709 txn->flags |= TX_WAIT_CLEANUP;
4710 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4711 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4712}
4713
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4714/* This function is an analyser which forwards request body (including chunk
4715 * sizes if any). It is called as soon as we must forward, even if we forward
4716 * zero byte. The only situation where it must not be called is when we're in
4717 * tunnel mode and we want to forward till the close. It's used both to forward
4718 * remaining data and to resync after end of body. It expects the msg_state to
4719 * 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]4720 * 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]4721 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]4722 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4723 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4724int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4725{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4726 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4727 struct http_txn *txn = s->txn;
4728 struct http_msg *msg = &s->txn->req;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]4729 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4730
Christopher Faulet814d2702017-03-30 11:33:44 +0200[diff] [blame]4731 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
4732 now_ms, __FUNCTION__,
4733 s,
4734 req,
4735 req->rex, req->wex,
4736 req->flags,
4737 req->buf->i,
4738 req->analysers);
4739
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4740 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4741 return 0;
4742
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4743 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]4744 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4745 /* Output closed while we were sending data. We must abort and
4746 * wake the other side up.
4747 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4748 msg->err_state = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4749 msg->msg_state = HTTP_MSG_ERROR;
4750 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4751 return 1;
4752 }
4753
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4754 /* Note that we don't have to send 100-continue back because we don't
4755 * need the data to complete our job, and it's up to the server to
4756 * decide whether to return 100, 417 or anything else in return of
4757 * an "Expect: 100-continue" header.
4758 */
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4759 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]4760 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
4761 ? HTTP_MSG_CHUNK_SIZE
4762 : HTTP_MSG_DATA);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4763
4764 /* TODO/filters: when http-buffer-request option is set or if a
4765 * rule on url_param exists, the first chunk size could be
4766 * already parsed. In that case, msg->next is after the chunk
4767 * size (including the CRLF after the size). So this case should
4768 * be handled to */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4769 }
4770
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]4771 /* Some post-connect processing might want us to refrain from starting to
4772 * forward data. Currently, the only reason for this is "balance url_param"
4773 * whichs need to parse/process the request after we've enabled forwarding.
4774 */
4775 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4776 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]4777 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]4778 req->flags |= CF_WAKE_CONNECT;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]4779 goto missing_data_or_waiting;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]4780 }
4781 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
4782 }
4783
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]4784 /* in most states, we should abort in case of early close */
4785 channel_auto_close(req);
4786
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]4787 if (req->to_forward) {
4788 /* We can't process the buffer's contents yet */
4789 req->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]4790 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]4791 }
4792
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]4793 if (msg->msg_state < HTTP_MSG_DONE) {
4794 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
4795 ? http_msg_forward_chunked_body(s, msg)
4796 : http_msg_forward_body(s, msg));
4797 if (!ret)
4798 goto missing_data_or_waiting;
4799 if (ret < 0)
4800 goto return_bad_req;
4801 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4802
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]4803 /* other states, DONE...TUNNEL */
4804 /* we don't want to forward closes on DONE except in tunnel mode. */
4805 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
4806 channel_dont_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4807
Christopher Faulet894da4c2017-07-18 11:29:07 +0200[diff] [blame]4808 http_resync_states(s);
4809 if (!(req->analysers & an_bit)) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]4810 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4811 if (req->flags & CF_SHUTW) {
4812 /* request errors are most likely due to the
4813 * server aborting the transfer. */
4814 goto aborted_xfer;
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4815 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]4816 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4817 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, s->be);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]4818 goto return_bad_req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4819 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]4820 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4821 }
4822
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]4823 /* If "option abortonclose" is set on the backend, we want to monitor
4824 * the client's connection and forward any shutdown notification to the
4825 * server, which will decide whether to close or to go on processing the
4826 * request. We only do that in tunnel mode, and not in other modes since
4827 * it can be abused to exhaust source ports. */
4828 if (s->be->options & PR_O_ABRT_CLOSE) {
4829 channel_auto_read(req);
4830 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
4831 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
4832 s->si[1].flags |= SI_FL_NOLINGER;
4833 channel_auto_close(req);
4834 }
4835 else if (s->txn->meth == HTTP_METH_POST) {
4836 /* POST requests may require to read extra CRLF sent by broken
4837 * browsers and which could cause an RST to be sent upon close
4838 * on some systems (eg: Linux). */
4839 channel_auto_read(req);
4840 }
4841 return 0;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]4842
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]4843 missing_data_or_waiting:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4844 /* stop waiting for data if the input is closed before the end */
Christopher Fauleta33510b2017-03-31 15:37:29 +0200[diff] [blame]4845 if (msg->msg_state < HTTP_MSG_ENDING && req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4846 if (!(s->flags & SF_ERR_MASK))
4847 s->flags |= SF_ERR_CLICL;
4848 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4849 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4850 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4851 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4852 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4853 }
4854
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4855 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4856 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4857 if (objt_server(s->target))
4858 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4859
4860 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4861 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4862
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4863 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4864 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4865 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4866
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4867 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4868 * 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]4869 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4870 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4871 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4872
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4873 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4874 * 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]4875 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4876 * modes are already handled by the stream sock layer. We must not do
4877 * this in content-length mode because it could present the MSG_MORE
4878 * flag with the last block of forwarded data, which would cause an
4879 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4880 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4881 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4882 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4883
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4884 return 0;
4885
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4886 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4887 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4888 if (sess->listener->counters)
4889 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]4890
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4891 return_bad_req_stats_ok:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4892 txn->req.err_state = txn->req.msg_state;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4893 txn->req.msg_state = HTTP_MSG_ERROR;
4894 if (txn->status) {
4895 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4896 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4897 } else {
4898 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4899 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4900 }
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4901 req->analysers &= AN_REQ_FLT_END;
4902 s->res.analysers &= AN_RES_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4903
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4904 if (!(s->flags & SF_ERR_MASK))
4905 s->flags |= SF_ERR_PRXCOND;
4906 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4907 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4908 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4909 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4910 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4911 }
4912 return 0;
4913
4914 aborted_xfer:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4915 txn->req.err_state = txn->req.msg_state;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4916 txn->req.msg_state = HTTP_MSG_ERROR;
4917 if (txn->status) {
4918 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4919 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4920 } else {
4921 txn->status = 502;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4922 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4923 }
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4924 req->analysers &= AN_REQ_FLT_END;
4925 s->res.analysers &= AN_RES_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4926
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4927 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4928 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4929 if (objt_server(s->target))
4930 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4931
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4932 if (!(s->flags & SF_ERR_MASK))
4933 s->flags |= SF_ERR_SRVCL;
4934 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4935 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4936 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4937 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4938 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4939 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4940 return 0;
4941}
4942
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4943/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4944 * processing can continue on next analysers, or zero if it either needs more
4945 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4946 * 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]4947 * when it has nothing left to do, and may remove any analyser when it wants to
4948 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4949 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4950int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4951{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4952 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4953 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4954 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4955 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4956 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4957 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4958 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4959
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4960 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]4961 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4962 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4963 rep,
4964 rep->rex, rep->wex,
4965 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4966 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4967 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4968
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4969 /*
4970 * Now parse the partial (or complete) lines.
4971 * We will check the response syntax, and also join multi-line
4972 * headers. An index of all the lines will be elaborated while
4973 * parsing.
4974 *
4975 * For the parsing, we use a 28 states FSM.
4976 *
4977 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4978 * rep->buf->p = beginning of response
4979 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4980 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4981 * msg->eol = end of current header or line (LF or CRLF)
4982 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4983 */
4984
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]4985 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4986 /* There's a protected area at the end of the buffer for rewriting
4987 * purposes. We don't want to start to parse the request if the
4988 * protected area is affected, because we may have to move processed
4989 * data later, which is much more complicated.
4990 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4991 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]4992 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]4993 /* some data has still not left the buffer, wake us once that's done */
4994 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
4995 goto abort_response;
4996 channel_dont_close(rep);
4997 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]4998 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]4999 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5000 }
5001
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5002 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5003 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5004 buffer_slow_realign(rep->buf);
5005
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5006 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5007 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5008 }
5009
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5010 /* 1: we might have to print this header in debug mode */
5011 if (unlikely((global.mode & MODE_DEBUG) &&
5012 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5013 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5014 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5015
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5016 sol = rep->buf->p;
5017 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5018 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5019
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5020 sol += hdr_idx_first_pos(&txn->hdr_idx);
5021 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5022
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5023 while (cur_idx) {
5024 eol = sol + txn->hdr_idx.v[cur_idx].len;
5025 debug_hdr("srvhdr", s, sol, eol);
5026 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5027 cur_idx = txn->hdr_idx.v[cur_idx].next;
5028 }
5029 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5030
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5031 /*
5032 * Now we quickly check if we have found a full valid response.
5033 * If not so, we check the FD and buffer states before leaving.
5034 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5035 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5036 * responses are checked first.
5037 *
5038 * Depending on whether the client is still there or not, we
5039 * may send an error response back or not. Note that normally
5040 * we should only check for HTTP status there, and check I/O
5041 * errors somewhere else.
5042 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5043
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5044 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5045 /* Invalid response */
5046 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5047 /* we detected a parsing error. We want to archive this response
5048 * in the dedicated proxy area for later troubleshooting.
5049 */
5050 hdr_response_bad:
5051 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5052 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->err_state, sess->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5053
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5054 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5055 if (objt_server(s->target)) {
5056 objt_server(s->target)->counters.failed_resp++;
5057 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5058 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5059 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5060 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5061 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5062 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5063 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5064 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]5065 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5066
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5067 if (!(s->flags & SF_ERR_MASK))
5068 s->flags |= SF_ERR_PRXCOND;
5069 if (!(s->flags & SF_FINST_MASK))
5070 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5071
5072 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5073 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5074
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5075 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5076 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5077 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5078 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5079 goto hdr_response_bad;
5080 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5081
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5082 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5083 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5084 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5085 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->err_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5086 else if (txn->flags & TX_NOT_FIRST)
5087 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5088
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5089 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5090 if (objt_server(s->target)) {
5091 objt_server(s->target)->counters.failed_resp++;
5092 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5093 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5094
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5095 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5096 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5097 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5098 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5099 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]5100 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5101
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5102 if (!(s->flags & SF_ERR_MASK))
5103 s->flags |= SF_ERR_SRVCL;
5104 if (!(s->flags & SF_FINST_MASK))
5105 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5106 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5107 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5108
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]5109 /* read timeout : return a 504 to the client. */
5110 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5111 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5112 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->err_state, sess->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5113
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5114 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5115 if (objt_server(s->target)) {
5116 objt_server(s->target)->counters.failed_resp++;
5117 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5118 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5119
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5120 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5121 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5122 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5123 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5124 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]5125 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5126
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5127 if (!(s->flags & SF_ERR_MASK))
5128 s->flags |= SF_ERR_SRVTO;
5129 if (!(s->flags & SF_FINST_MASK))
5130 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5131 return 0;
5132 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5133
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5134 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5135 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]5136 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5137 s->be->be_counters.cli_aborts++;
5138 if (objt_server(s->target))
5139 objt_server(s->target)->counters.cli_aborts++;
5140
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5141 rep->analysers &= AN_RES_FLT_END;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5142 channel_auto_close(rep);
5143
5144 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5145 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]5146 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5147
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5148 if (!(s->flags & SF_ERR_MASK))
5149 s->flags |= SF_ERR_CLICL;
5150 if (!(s->flags & SF_FINST_MASK))
5151 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5152
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5153 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5154 return 0;
5155 }
5156
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5157 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5158 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5159 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5160 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->err_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5161 else if (txn->flags & TX_NOT_FIRST)
5162 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5163
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5164 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5165 if (objt_server(s->target)) {
5166 objt_server(s->target)->counters.failed_resp++;
5167 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5168 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5169
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5170 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5171 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5172 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5173 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5174 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]5175 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5176
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5177 if (!(s->flags & SF_ERR_MASK))
5178 s->flags |= SF_ERR_SRVCL;
5179 if (!(s->flags & SF_FINST_MASK))
5180 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5181 return 0;
5182 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5183
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5184 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5185 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5186 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5187 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->err_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5188 else if (txn->flags & TX_NOT_FIRST)
5189 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5190
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5191 s->be->be_counters.failed_resp++;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5192 rep->analysers &= AN_RES_FLT_END;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5193 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5194
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5195 if (!(s->flags & SF_ERR_MASK))
5196 s->flags |= SF_ERR_CLICL;
5197 if (!(s->flags & SF_FINST_MASK))
5198 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5199
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5200 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5201 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5202 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5203
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5204 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5205 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5206 return 0;
5207 }
5208
5209 /* More interesting part now : we know that we have a complete
5210 * response which at least looks like HTTP. We have an indicator
5211 * of each header's length, so we can parse them quickly.
5212 */
5213
5214 if (unlikely(msg->err_pos >= 0))
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5215 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->err_state, sess->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5216
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5217 /*
5218 * 1: get the status code
5219 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5220 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5221 if (n < 1 || n > 5)
5222 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5223 /* when the client triggers a 4xx from the server, it's most often due
5224 * to a missing object or permission. These events should be tracked
5225 * because if they happen often, it may indicate a brute force or a
5226 * vulnerability scan.
5227 */
5228 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5229 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5230
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5231 if (objt_server(s->target))
5232 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5233
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]5234 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
5235 * exactly one digit "." one digit. This check may be disabled using
5236 * option accept-invalid-http-response.
5237 */
5238 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
5239 if (msg->sl.st.v_l != 8) {
5240 msg->err_pos = 0;
5241 goto hdr_response_bad;
5242 }
5243
5244 if (rep->buf->p[4] != '/' ||
5245 !isdigit((unsigned char)rep->buf->p[5]) ||
5246 rep->buf->p[6] != '.' ||
5247 !isdigit((unsigned char)rep->buf->p[7])) {
5248 msg->err_pos = 4;
5249 goto hdr_response_bad;
5250 }
5251 }
5252
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5253 /* check if the response is HTTP/1.1 or above */
5254 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5255 ((rep->buf->p[5] > '1') ||
5256 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5257 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5258
5259 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5260 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]5261
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5262 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5263 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5264
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5265 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]5266
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5267 /* Adjust server's health based on status code. Note: status codes 501
5268 * and 505 are triggered on demand by client request, so we must not
5269 * count them as server failures.
5270 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5271 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5272 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5273 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5274 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5275 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5276 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5277
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5278 /*
Willy Tarreaua14ad722017-07-07 11:36:32 +0200[diff] [blame]5279 * We may be facing a 100-continue response, or any other informational
5280 * 1xx response which is non-final, in which case this is not the right
5281 * response, and we're waiting for the next one. Let's allow this response
5282 * to go to the client and wait for the next one. There's an exception for
5283 * 101 which is used later in the code to switch protocols.
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5284 */
Willy Tarreaua14ad722017-07-07 11:36:32 +0200[diff] [blame]5285 if (txn->status < 200 &&
5286 (txn->status == 100 || txn->status >= 102)) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5287 hdr_idx_init(&txn->hdr_idx);
5288 msg->next -= channel_forward(rep, msg->next);
5289 msg->msg_state = HTTP_MSG_RPBEFORE;
5290 txn->status = 0;
5291 s->logs.t_data = -1; /* was not a response yet */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5292 FLT_STRM_CB(s, flt_http_reset(s, msg));
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5293 goto next_one;
Willy Tarreaua14ad722017-07-07 11:36:32 +0200[diff] [blame]5294 }
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5295
Willy Tarreaua14ad722017-07-07 11:36:32 +0200[diff] [blame]5296 /*
5297 * 2: check for cacheability.
5298 */
5299
5300 switch (txn->status) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5301 case 200:
5302 case 203:
5303 case 206:
5304 case 300:
5305 case 301:
5306 case 410:
5307 /* RFC2616 @13.4:
5308 * "A response received with a status code of
5309 * 200, 203, 206, 300, 301 or 410 MAY be stored
5310 * by a cache (...) unless a cache-control
5311 * directive prohibits caching."
5312 *
5313 * RFC2616 @9.5: POST method :
5314 * "Responses to this method are not cacheable,
5315 * unless the response includes appropriate
5316 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5317 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5318 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5319 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5320 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5321 break;
5322 default:
5323 break;
5324 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5325
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5326 /*
5327 * 3: we may need to capture headers
5328 */
5329 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]5330 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5331 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]5332 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5333
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]5334 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
5335 * by RFC7230#3.3.3 :
5336 *
5337 * The length of a message body is determined by one of the following
5338 * (in order of precedence):
5339 *
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]5340 * 1. Any 2xx (Successful) response to a CONNECT request implies that
5341 * the connection will become a tunnel immediately after the empty
5342 * line that concludes the header fields. A client MUST ignore
5343 * any Content-Length or Transfer-Encoding header fields received
5344 * in such a message. Any 101 response (Switching Protocols) is
5345 * managed in the same manner.
5346 *
5347 * 2. Any response to a HEAD request and any response with a 1xx
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]5348 * (Informational), 204 (No Content), or 304 (Not Modified) status
5349 * code is always terminated by the first empty line after the
5350 * header fields, regardless of the header fields present in the
5351 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5352 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]5353 * 3. If a Transfer-Encoding header field is present and the chunked
5354 * transfer coding (Section 4.1) is the final encoding, the message
5355 * body length is determined by reading and decoding the chunked
5356 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5357 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]5358 * If a Transfer-Encoding header field is present in a response and
5359 * the chunked transfer coding is not the final encoding, the
5360 * message body length is determined by reading the connection until
5361 * it is closed by the server. If a Transfer-Encoding header field
5362 * is present in a request and the chunked transfer coding is not
5363 * the final encoding, the message body length cannot be determined
5364 * reliably; the server MUST respond with the 400 (Bad Request)
5365 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5366 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]5367 * If a message is received with both a Transfer-Encoding and a
5368 * Content-Length header field, the Transfer-Encoding overrides the
5369 * Content-Length. Such a message might indicate an attempt to
5370 * perform request smuggling (Section 9.5) or response splitting
5371 * (Section 9.4) and ought to be handled as an error. A sender MUST
5372 * remove the received Content-Length field prior to forwarding such
5373 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5374 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]5375 * 4. If a message is received without Transfer-Encoding and with
5376 * either multiple Content-Length header fields having differing
5377 * field-values or a single Content-Length header field having an
5378 * invalid value, then the message framing is invalid and the
5379 * recipient MUST treat it as an unrecoverable error. If this is a
5380 * request message, the server MUST respond with a 400 (Bad Request)
5381 * status code and then close the connection. If this is a response
5382 * message received by a proxy, the proxy MUST close the connection
5383 * to the server, discard the received response, and send a 502 (Bad
5384 * Gateway) response to the client. If this is a response message
5385 * received by a user agent, the user agent MUST close the
5386 * connection to the server and discard the received response.
5387 *
5388 * 5. If a valid Content-Length header field is present without
5389 * Transfer-Encoding, its decimal value defines the expected message
5390 * body length in octets. If the sender closes the connection or
5391 * the recipient times out before the indicated number of octets are
5392 * received, the recipient MUST consider the message to be
5393 * incomplete and close the connection.
5394 *
5395 * 6. If this is a request message and none of the above are true, then
5396 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5397 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]5398 * 7. Otherwise, this is a response message without a declared message
5399 * body length, so the message body length is determined by the
5400 * number of octets received prior to the server closing the
5401 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5402 */
5403
5404 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5405 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5406 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5407 * FIXME: should we parse anyway and return an error on chunked encoding ?
5408 */
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]5409 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5410 txn->status == 101)) {
5411 /* Either we've established an explicit tunnel, or we're
5412 * switching the protocol. In both cases, we're very unlikely
5413 * to understand the next protocols. We have to switch to tunnel
5414 * mode, so that we transfer the request and responses then let
5415 * this protocol pass unmodified. When we later implement specific
5416 * parsers for such protocols, we'll want to check the Upgrade
5417 * header which contains information about that protocol for
5418 * responses with status 101 (eg: see RFC2817 about TLS).
5419 */
5420 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5421 msg->flags |= HTTP_MSGF_XFER_LEN;
5422 goto end;
5423 }
5424
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5425 if (txn->meth == HTTP_METH_HEAD ||
5426 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5427 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5428 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5429 goto skip_content_length;
5430 }
5431
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5432 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5433 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]5434 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5435 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5436 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5437 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5438 /* bad transfer-encoding (chunked followed by something else) */
5439 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5440 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5441 break;
5442 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5443 }
5444
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]5445 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5446 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]5447 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]5448 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
5449 http_remove_header2(msg, &txn->hdr_idx, &ctx);
5450 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]5451 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]5452 signed long long cl;
5453
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5454 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5455 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5456 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5457 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5458
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5459 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5460 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5461 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5462 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5463
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5464 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5465 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5466 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5467 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5468
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5469 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5470 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5471 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5472 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5473
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5474 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5475 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5476 }
5477
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]5478 skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5479 /* Now we have to check if we need to modify the Connection header.
5480 * This is more difficult on the response than it is on the request,
5481 * because we can have two different HTTP versions and we don't know
5482 * how the client will interprete a response. For instance, let's say
5483 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5484 * HTTP/1.1 response without any header. Maybe it will bound itself to
5485 * HTTP/1.0 because it only knows about it, and will consider the lack
5486 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5487 * the lack of header as a keep-alive. Thus we will use two flags
5488 * indicating how a request MAY be understood by the client. In case
5489 * of multiple possibilities, we'll fix the header to be explicit. If
5490 * ambiguous cases such as both close and keepalive are seen, then we
5491 * will fall back to explicit close. Note that we won't take risks with
5492 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5493 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5494 */
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]5495 if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5496 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5497 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
5498 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5499 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5500
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]5501 /* this situation happens when combining pretend-keepalive with httpclose. */
5502 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5503 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]5504 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]5505 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
5506
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5507 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5508 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5509 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5510 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5511
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5512 /* now adjust header transformations depending on current state */
5513 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5514 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5515 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5516 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5517 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5518 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5519 else { /* SCL / KAL */
5520 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5521 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5522 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5523 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5524
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5525 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5526 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5527
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5528 /* Some keep-alive responses are converted to Server-close if
5529 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5530 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5531 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5532 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5533 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5534 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5535 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5536 }
5537
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]5538 end:
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5539 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]5540 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5541
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]5542 /* end of job, return OK */
5543 rep->analysers &= ~an_bit;
5544 rep->analyse_exp = TICK_ETERNITY;
5545 channel_auto_close(rep);
5546 return 1;
5547
5548 abort_keep_alive:
5549 /* A keep-alive request to the server failed on a network error.
5550 * The client is required to retry. We need to close without returning
5551 * any other information so that the client retries.
5552 */
5553 txn->status = 0;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5554 rep->analysers &= AN_RES_FLT_END;
5555 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]5556 channel_auto_close(rep);
5557 s->logs.logwait = 0;
5558 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5559 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5560 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5561 http_reply_and_close(s, txn->status, NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]5562 return 0;
5563}
5564
5565/* This function performs all the processing enabled for the current response.
5566 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5567 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]5568 * other functions. It works like process_request (see indications above).
5569 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5570int 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]5571{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5572 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5573 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]5574 struct http_msg *msg = &txn->rsp;
5575 struct proxy *cur_proxy;
5576 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]5577 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]5578
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5579 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]5580 now_ms, __FUNCTION__,
5581 s,
5582 rep,
5583 rep->rex, rep->wex,
5584 rep->flags,
5585 rep->buf->i,
5586 rep->analysers);
5587
5588 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
5589 return 0;
5590
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]5591 /* The stats applet needs to adjust the Connection header but we don't
5592 * apply any filter there.
5593 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]5594 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
5595 rep->analysers &= ~an_bit;
5596 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]5597 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]5598 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]5599
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5600 /*
5601 * We will have to evaluate the filters.
5602 * As opposed to version 1.2, now they will be evaluated in the
5603 * filters order and not in the header order. This means that
5604 * each filter has to be validated among all headers.
5605 *
5606 * Filters are tried with ->be first, then with ->fe if it is
5607 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]5608 *
5609 * Maybe we are in resume condiion. In this case I choose the
5610 * "struct proxy" which contains the rule list matching the resume
5611 * pointer. If none of theses "struct proxy" match, I initialise
5612 * the process with the first one.
5613 *
5614 * In fact, I check only correspondance betwwen the current list
5615 * pointer and the ->fe rule list. If it doesn't match, I initialize
5616 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5617 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5618 if (s->current_rule_list == &sess->fe->http_res_rules)
5619 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]5620 else
5621 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5622 while (1) {
5623 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5624
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5625 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]5626 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]5627 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5628
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]5629 if (ret == HTTP_RULE_RES_BADREQ)
5630 goto return_srv_prx_502;
5631
5632 if (ret == HTTP_RULE_RES_DONE) {
5633 rep->analysers &= ~an_bit;
5634 rep->analyse_exp = TICK_ETERNITY;
5635 return 1;
5636 }
5637 }
5638
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]5639 /* we need to be called again. */
5640 if (ret == HTTP_RULE_RES_YIELD) {
5641 channel_dont_close(rep);
5642 return 0;
5643 }
5644
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5645 /* try headers filters */
5646 if (rule_set->rsp_exp != NULL) {
5647 if (apply_filters_to_response(s, rep, rule_set) < 0) {
5648 return_bad_resp:
5649 if (objt_server(s->target)) {
5650 objt_server(s->target)->counters.failed_resp++;
5651 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5652 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5653 s->be->be_counters.failed_resp++;
5654 return_srv_prx_502:
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5655 rep->analysers &= AN_RES_FLT_END;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5656 txn->status = 502;
5657 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5658 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5659 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]5660 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5661 if (!(s->flags & SF_ERR_MASK))
5662 s->flags |= SF_ERR_PRXCOND;
5663 if (!(s->flags & SF_FINST_MASK))
5664 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5665 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5666 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5667 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5668
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5669 /* has the response been denied ? */
5670 if (txn->flags & TX_SVDENY) {
5671 if (objt_server(s->target))
5672 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5673
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5674 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5675 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5676 if (sess->listener->counters)
5677 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5678
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5679 goto return_srv_prx_502;
5680 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5681
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5682 /* add response headers from the rule sets in the same order */
5683 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]5684 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5685 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5686 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]5687 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]5688 ret = acl_pass(ret);
5689 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5690 ret = !ret;
5691 if (!ret)
5692 continue;
5693 }
5694 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
5695 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5696 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5697
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5698 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5699 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5700 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5701 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5702 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5703
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]5704 /* After this point, this anayzer can't return yield, so we can
5705 * remove the bit corresponding to this analyzer from the list.
5706 *
5707 * Note that the intermediate returns and goto found previously
5708 * reset the analyzers.
5709 */
5710 rep->analysers &= ~an_bit;
5711 rep->analyse_exp = TICK_ETERNITY;
5712
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5713 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]5714 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5715 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5716
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5717 /*
5718 * Now check for a server cookie.
5719 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]5720 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]5721 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5722
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5723 /*
5724 * Check for cache-control or pragma headers if required.
5725 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]5726 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]5727 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5728
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5729 /*
5730 * Add server cookie in the response if needed
5731 */
5732 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
5733 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5734 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5735 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
5736 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5737 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5738 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
5739 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5740 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5741 /* the server is known, it's not the one the client requested, or the
5742 * cookie's last seen date needs to be refreshed. We have to
5743 * insert a set-cookie here, except if we want to insert only on POST
5744 * requests and this one isn't. Note that servers which don't have cookies
5745 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5746 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5747 if (!objt_server(s->target)->cookie) {
5748 chunk_printf(&trash,
5749 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5750 s->be->cookie_name);
5751 }
5752 else {
5753 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]5754
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5755 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
5756 /* emit last_date, which is mandatory */
5757 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5758 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5759 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5760
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5761 if (s->be->cookie_maxlife) {
5762 /* emit first_date, which is either the original one or
5763 * the current date.
5764 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5765 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5766 s30tob64(txn->cookie_first_date ?
5767 txn->cookie_first_date >> 2 :
5768 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5769 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5770 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5771 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5772 chunk_appendf(&trash, "; path=/");
5773 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5774
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5775 if (s->be->cookie_domain)
5776 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5777
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5778 if (s->be->ck_opts & PR_CK_HTTPONLY)
5779 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5780
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5781 if (s->be->ck_opts & PR_CK_SECURE)
5782 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5783
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5784 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
5785 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5786
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5787 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5788 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5789 /* the server did not change, only the date was updated */
5790 txn->flags |= TX_SCK_UPDATED;
5791 else
5792 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5793
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5794 /* Here, we will tell an eventual cache on the client side that we don't
5795 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5796 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5797 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5798 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5799 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5800
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5801 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5802
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5803 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
5804 "Cache-control: private", 22) < 0))
5805 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5806 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5807 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5808
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5809 /*
5810 * Check if result will be cacheable with a cookie.
5811 * We'll block the response if security checks have caught
5812 * nasty things such as a cacheable cookie.
5813 */
5814 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5815 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
5816 (s->be->options & PR_O_CHK_CACHE)) {
5817 /* we're in presence of a cacheable response containing
5818 * a set-cookie header. We'll block it as requested by
5819 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5820 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5821 if (objt_server(s->target))
5822 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5823
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5824 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5825 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5826 if (sess->listener->counters)
5827 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5828
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5829 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
5830 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
5831 send_log(s->be, LOG_ALERT,
5832 "Blocking cacheable cookie in response from instance %s, server %s.\n",
5833 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
5834 goto return_srv_prx_502;
5835 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5836
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]5837 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5838 /*
5839 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
5840 * If an "Upgrade" token is found, the header is left untouched in order
5841 * 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]5842 * if anything but "Upgrade" is present in the Connection header. We don't
5843 * want to touch any 101 response either since it's switching to another
5844 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5845 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]5846 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5847 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5848 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5849 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
5850 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5851
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5852 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5853 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5854 /* we want a keep-alive response here. Keep-alive header
5855 * required if either side is not 1.1.
5856 */
5857 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
5858 want_flags |= TX_CON_KAL_SET;
5859 }
5860 else {
5861 /* we want a close response here. Close header required if
5862 * the server is 1.1, regardless of the client.
5863 */
5864 if (msg->flags & HTTP_MSGF_VER_11)
5865 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5866 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5867
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5868 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
5869 http_change_connection_header(txn, msg, want_flags);
5870 }
5871
5872 skip_header_mangling:
Christopher Faulet69744d92017-03-30 10:54:35 +0200[diff] [blame]5873 /* Always enter in the body analyzer */
5874 rep->analysers &= ~AN_RES_FLT_XFER_DATA;
5875 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5876
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5877 /* if the user wants to log as soon as possible, without counting
5878 * bytes from the server, then this is the right moment. We have
5879 * to temporarily assign bytes_out to log what we currently have.
5880 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5881 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]5882 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
5883 s->logs.bytes_out = txn->rsp.eoh;
5884 s->do_log(s);
5885 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5886 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5887 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5888}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5889
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5890/* This function is an analyser which forwards response body (including chunk
5891 * sizes if any). It is called as soon as we must forward, even if we forward
5892 * zero byte. The only situation where it must not be called is when we're in
5893 * tunnel mode and we want to forward till the close. It's used both to forward
5894 * remaining data and to resync after end of body. It expects the msg_state to
5895 * 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]5896 * 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]5897 *
5898 * It is capable of compressing response data both in content-length mode and
5899 * in chunked mode. The state machines follows different flows depending on
5900 * whether content-length and chunked modes are used, since there are no
5901 * trailers in content-length :
5902 *
5903 * chk-mode cl-mode
5904 * ,----- BODY -----.
5905 * / \
5906 * V size > 0 V chk-mode
5907 * .--> SIZE -------------> DATA -------------> CRLF
5908 * | | size == 0 | last byte |
5909 * | v final crlf v inspected |
5910 * | TRAILERS -----------> DONE |
5911 * | |
5912 * `----------------------------------------------'
5913 *
5914 * Compression only happens in the DATA state, and must be flushed in final
5915 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
5916 * is performed at once on final states for all bytes parsed, or when leaving
5917 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5918 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5919int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5920{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5921 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5922 struct http_txn *txn = s->txn;
5923 struct http_msg *msg = &s->txn->rsp;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5924 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5925
Christopher Faulet814d2702017-03-30 11:33:44 +0200[diff] [blame]5926 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
5927 now_ms, __FUNCTION__,
5928 s,
5929 res,
5930 res->rex, res->wex,
5931 res->flags,
5932 res->buf->i,
5933 res->analysers);
5934
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5935 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5936 return 0;
5937
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5938 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]5939 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5940 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5941 /* Output closed while we were sending data. We must abort and
5942 * wake the other side up.
5943 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5944 msg->err_state = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5945 msg->msg_state = HTTP_MSG_ERROR;
5946 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5947 return 1;
5948 }
5949
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5950 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5951 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5952
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5953 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5954 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
5955 ? HTTP_MSG_CHUNK_SIZE
5956 : HTTP_MSG_DATA);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5957 }
5958
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5959 if (res->to_forward) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5960 /* We can't process the buffer's contents yet */
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5961 res->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5962 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5963 }
5964
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5965 if (msg->msg_state < HTTP_MSG_DONE) {
5966 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
5967 ? http_msg_forward_chunked_body(s, msg)
5968 : http_msg_forward_body(s, msg));
5969 if (!ret)
5970 goto missing_data_or_waiting;
5971 if (ret < 0)
5972 goto return_bad_res;
5973 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5974
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5975 /* other states, DONE...TUNNEL */
5976 /* for keep-alive we don't want to forward closes on DONE */
5977 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5978 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
5979 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5980
Christopher Faulet894da4c2017-07-18 11:29:07 +0200[diff] [blame]5981 http_resync_states(s);
5982 if (!(res->analysers & an_bit)) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5983 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5984 if (res->flags & CF_SHUTW) {
5985 /* response errors are most likely due to the
5986 * client aborting the transfer. */
5987 goto aborted_xfer;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5988 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5989 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5990 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->err_state, strm_fe(s));
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5991 goto return_bad_res;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5992 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5993 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5994 }
Willy Tarreauf51d03c2016-05-02 15:25:15 +0200[diff] [blame]5995 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5996
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5997 missing_data_or_waiting:
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5998 if (res->flags & CF_SHUTW)
5999 goto aborted_xfer;
6000
6001 /* stop waiting for data if the input is closed before the end. If the
6002 * client side was already closed, it means that the client has aborted,
6003 * so we don't want to count this as a server abort. Otherwise it's a
6004 * server abort.
6005 */
Christopher Fauleta33510b2017-03-31 15:37:29 +0200[diff] [blame]6006 if (msg->msg_state < HTTP_MSG_ENDING && res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6007 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6008 goto aborted_xfer;
Christopher Fauleta46bbd82015-06-19 09:00:58 +0200[diff] [blame]6009 /* If we have some pending data, we continue the processing */
6010 if (!buffer_pending(res->buf)) {
6011 if (!(s->flags & SF_ERR_MASK))
6012 s->flags |= SF_ERR_SRVCL;
6013 s->be->be_counters.srv_aborts++;
6014 if (objt_server(s->target))
6015 objt_server(s->target)->counters.srv_aborts++;
6016 goto return_bad_res_stats_ok;
6017 }
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6018 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6019
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6020 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6021 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6022 goto return_bad_res;
6023
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6024 /* When TE: chunked is used, we need to get there again to parse
6025 * remaining chunks even if the server has closed, so we don't want to
Christopher Faulet69744d92017-03-30 10:54:35 +0200[diff] [blame]6026 * set CF_DONTCLOSE. Similarly, if keep-alive is set on the client side
6027 * or if there are filters registered on the stream, we don't want to
6028 * forward a close
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6029 */
Christopher Faulet69744d92017-03-30 10:54:35 +0200[diff] [blame]6030 if ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Christopher Fauletf1cc5d02017-02-08 09:45:13 +0100[diff] [blame]6031 HAS_DATA_FILTERS(s, res) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6032 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6033 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6034 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6035
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6036 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6037 * 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]6038 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6039 * modes are already handled by the stream sock layer. We must not do
6040 * this in content-length mode because it could present the MSG_MORE
6041 * flag with the last block of forwarded data, which would cause an
6042 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6043 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6044 if ((msg->flags & HTTP_MSGF_TE_CHNK) || (msg->flags & HTTP_MSGF_COMPRESSING))
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6045 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6046
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6047 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6048 return 0;
6049
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6050 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6051 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6052 if (objt_server(s->target))
6053 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6054
6055 return_bad_res_stats_ok:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6056 txn->rsp.err_state = txn->rsp.msg_state;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6057 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6058 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6059 http_reply_and_close(s, txn->status, NULL);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6060 res->analysers &= AN_RES_FLT_END;
6061 s->req.analysers &= AN_REQ_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6062 if (objt_server(s->target))
6063 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6064
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6065 if (!(s->flags & SF_ERR_MASK))
6066 s->flags |= SF_ERR_PRXCOND;
6067 if (!(s->flags & SF_FINST_MASK))
6068 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6069 return 0;
6070
6071 aborted_xfer:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6072 txn->rsp.err_state = txn->rsp.msg_state;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6073 txn->rsp.msg_state = HTTP_MSG_ERROR;
6074 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6075 http_reply_and_close(s, txn->status, NULL);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6076 res->analysers &= AN_RES_FLT_END;
6077 s->req.analysers &= AN_REQ_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6078
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6079 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6080 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6081 if (objt_server(s->target))
6082 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6083
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6084 if (!(s->flags & SF_ERR_MASK))
6085 s->flags |= SF_ERR_CLICL;
6086 if (!(s->flags & SF_FINST_MASK))
6087 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6088 return 0;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6089}
6090
6091
6092static inline int
6093http_msg_forward_body(struct stream *s, struct http_msg *msg)
6094{
6095 struct channel *chn = msg->chn;
6096 int ret;
6097
6098 /* Here we have the guarantee to be in HTTP_MSG_DATA or HTTP_MSG_ENDING state */
6099
6100 if (msg->msg_state == HTTP_MSG_ENDING)
6101 goto ending;
6102
6103 /* Neither content-length, nor transfer-encoding was found, so we must
6104 * read the body until the server connection is closed. In that case, we
6105 * eat data as they come. Of course, this happens for response only. */
6106 if (!(msg->flags & HTTP_MSGF_XFER_LEN)) {
6107 unsigned long long len = (chn->buf->i - msg->next);
6108 msg->chunk_len += len;
6109 msg->body_len += len;
6110 }
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6111 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
6112 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
6113 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6114 msg->next += ret;
6115 msg->chunk_len -= ret;
6116 if (msg->chunk_len) {
6117 /* input empty or output full */
6118 if (chn->buf->i > msg->next)
6119 chn->flags |= CF_WAKE_WRITE;
6120 goto missing_data_or_waiting;
6121 }
6122
Christopher Faulet1486b0a2017-07-18 11:42:08 +0200[diff] [blame]6123 /* This check can only be true for a response. HTTP_MSGF_XFER_LEN is
6124 * always set for a request. */
6125 if (!(msg->flags & HTTP_MSGF_XFER_LEN)) {
6126 /* The server still sending data that should be filtered */
6127 if (!(chn->flags & CF_SHUTR) && HAS_DATA_FILTERS(s, chn))
6128 goto missing_data_or_waiting;
6129 }
Christopher Fauletf1cc5d02017-02-08 09:45:13 +0100[diff] [blame]6130
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6131 msg->msg_state = HTTP_MSG_ENDING;
6132
6133 ending:
6134 /* we may have some pending data starting at res->buf->p such as a last
6135 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6136 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
6137 /* default_ret */ msg->next,
6138 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6139 b_adv(chn->buf, ret);
6140 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]6141 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
6142 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]6143 if (msg->next)
6144 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]6145
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6146 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
6147 /* default_ret */ 1,
6148 /* on_error */ goto error,
6149 /* on_wait */ goto waiting);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6150 msg->msg_state = HTTP_MSG_DONE;
6151 return 1;
6152
6153 missing_data_or_waiting:
6154 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6155 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
6156 /* default_ret */ msg->next,
6157 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6158 b_adv(chn->buf, ret);
6159 msg->next -= ret;
6160 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
6161 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]6162 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6163 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]6164 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6165 return 0;
6166 error:
6167 return -1;
6168}
6169
6170static inline int
6171http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg)
6172{
6173 struct channel *chn = msg->chn;
Willy Tarreaue56cdd32017-09-21 08:36:33 +0200[diff] [blame]6174 unsigned int chunk;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6175 int ret;
6176
6177 /* Here we have the guarantee to be in one of the following state:
6178 * HTTP_MSG_DATA, HTTP_MSG_CHUNK_SIZE, HTTP_MSG_CHUNK_CRLF,
6179 * HTTP_MSG_TRAILERS or HTTP_MSG_ENDING. */
6180
6181 switch_states:
6182 switch (msg->msg_state) {
6183 case HTTP_MSG_DATA:
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6184 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
6185 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
6186 /* on_error */ goto error);
6187 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6188 msg->chunk_len -= ret;
6189 if (msg->chunk_len) {
6190 /* input empty or output full */
6191 if (chn->buf->i > msg->next)
6192 chn->flags |= CF_WAKE_WRITE;
6193 goto missing_data_or_waiting;
6194 }
6195
6196 /* nothing left to forward for this chunk*/
6197 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
6198 /* fall through for HTTP_MSG_CHUNK_CRLF */
6199
6200 case HTTP_MSG_CHUNK_CRLF:
6201 /* we want the CRLF after the data */
Willy Tarreaub2892562017-09-21 11:33:54 +0200[diff] [blame]6202 ret = h1_skip_chunk_crlf(chn->buf, msg->next, chn->buf->i);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6203 if (ret == 0)
6204 goto missing_data_or_waiting;
Willy Tarreaub2892562017-09-21 11:33:54 +0200[diff] [blame]6205 if (ret < 0) {
6206 msg->err_pos = chn->buf->i + ret;
6207 if (msg->err_pos < 0)
6208 msg->err_pos += chn->buf->size;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6209 goto chunk_parsing_error;
Willy Tarreaub2892562017-09-21 11:33:54 +0200[diff] [blame]6210 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]6211 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6212 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6213 /* fall through for HTTP_MSG_CHUNK_SIZE */
6214
6215 case HTTP_MSG_CHUNK_SIZE:
6216 /* read the chunk size and assign it to ->chunk_len,
6217 * then set ->next to point to the body and switch to
6218 * DATA or TRAILERS state.
6219 */
Willy Tarreaue56cdd32017-09-21 08:36:33 +0200[diff] [blame]6220 ret = h1_parse_chunk_size(chn->buf, msg->next, chn->buf->i, &chunk);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6221 if (ret == 0)
6222 goto missing_data_or_waiting;
Willy Tarreaue56cdd32017-09-21 08:36:33 +0200[diff] [blame]6223 if (ret < 0) {
6224 msg->err_pos = chn->buf->i + ret;
6225 if (msg->err_pos < 0)
6226 msg->err_pos += chn->buf->size;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6227 goto chunk_parsing_error;
Willy Tarreaue56cdd32017-09-21 08:36:33 +0200[diff] [blame]6228 }
6229
6230 msg->sol = ret;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]6231 msg->next += ret;
Willy Tarreaue56cdd32017-09-21 08:36:33 +0200[diff] [blame]6232 msg->chunk_len = chunk;
6233 msg->body_len += chunk;
6234
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6235 if (msg->chunk_len) {
6236 msg->msg_state = HTTP_MSG_DATA;
6237 goto switch_states;
6238 }
6239 msg->msg_state = HTTP_MSG_TRAILERS;
6240 /* fall through for HTTP_MSG_TRAILERS */
6241
6242 case HTTP_MSG_TRAILERS:
6243 ret = http_forward_trailers(msg);
6244 if (ret < 0)
6245 goto chunk_parsing_error;
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6246 FLT_STRM_DATA_CB(s, chn, flt_http_chunk_trailers(s, msg),
6247 /* default_ret */ 1,
6248 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6249 msg->next += msg->sol;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6250 if (!ret)
6251 goto missing_data_or_waiting;
6252 break;
6253
6254 case HTTP_MSG_ENDING:
6255 goto ending;
6256
6257 default:
6258 /* This should no happen in this function */
6259 goto error;
6260 }
6261
6262 msg->msg_state = HTTP_MSG_ENDING;
6263 ending:
6264 /* we may have some pending data starting at res->buf->p such as a last
6265 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6266 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]6267 /* default_ret */ msg->next,
6268 /* on_error */ goto error);
6269 b_adv(chn->buf, ret);
6270 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]6271 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
6272 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]6273 if (msg->next)
6274 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]6275
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6276 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6277 /* default_ret */ 1,
6278 /* on_error */ goto error,
6279 /* on_wait */ goto waiting);
6280 msg->msg_state = HTTP_MSG_DONE;
6281 return 1;
6282
6283 missing_data_or_waiting:
6284 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6285 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]6286 /* default_ret */ msg->next,
6287 /* on_error */ goto error);
6288 b_adv(chn->buf, ret);
6289 msg->next -= ret;
6290 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
6291 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]6292 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6293 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]6294 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6295 return 0;
6296
6297 chunk_parsing_error:
6298 if (msg->err_pos >= 0) {
6299 if (chn->flags & CF_ISRESP)
6300 http_capture_bad_message(&s->be->invalid_rep, s, msg,
6301 msg->msg_state, strm_fe(s));
6302 else
6303 http_capture_bad_message(&strm_fe(s)->invalid_req, s,
6304 msg, msg->msg_state, s->be);
6305 }
6306 error:
6307 return -1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6308}
6309
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6310
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6311/* Iterate the same filter through all request headers.
6312 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6313 * Since it can manage the switch to another backend, it updates the per-proxy
6314 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6315 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6316int 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]6317{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6318 char *cur_ptr, *cur_end, *cur_next;
6319 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6320 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6321 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6322 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6323
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6324 last_hdr = 0;
6325
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6326 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6327 old_idx = 0;
6328
6329 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6330 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6331 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6332 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6333 (exp->action == ACT_ALLOW ||
6334 exp->action == ACT_DENY ||
6335 exp->action == ACT_TARPIT))
6336 return 0;
6337
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6338 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6339 if (!cur_idx)
6340 break;
6341
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6342 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6343 cur_ptr = cur_next;
6344 cur_end = cur_ptr + cur_hdr->len;
6345 cur_next = cur_end + cur_hdr->cr + 1;
6346
6347 /* Now we have one header between cur_ptr and cur_end,
6348 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6349 */
6350
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]6351 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]6352 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6353 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6354 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6355 last_hdr = 1;
6356 break;
6357
6358 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6359 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6360 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6361 break;
6362
6363 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6364 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6365 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6366 break;
6367
6368 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]6369 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
6370 if (trash.len < 0)
6371 return -1;
6372
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6373 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6374 /* FIXME: if the user adds a newline in the replacement, the
6375 * index will not be recalculated for now, and the new line
6376 * will not be counted as a new header.
6377 */
6378
6379 cur_end += delta;
6380 cur_next += delta;
6381 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6382 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6383 break;
6384
6385 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6386 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6387 cur_next += delta;
6388
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6389 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6390 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6391 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6392 cur_hdr->len = 0;
6393 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6394 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6395 break;
6396
6397 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6398 }
6399
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6400 /* keep the link from this header to next one in case of later
6401 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6402 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6403 old_idx = cur_idx;
6404 }
6405 return 0;
6406}
6407
6408
6409/* Apply the filter to the request line.
6410 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6411 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6412 * Since it can manage the switch to another backend, it updates the per-proxy
6413 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6414 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6415int 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]6416{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6417 char *cur_ptr, *cur_end;
6418 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6419 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6420 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6421
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6422 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6423 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6424 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6425 (exp->action == ACT_ALLOW ||
6426 exp->action == ACT_DENY ||
6427 exp->action == ACT_TARPIT))
6428 return 0;
6429 else if (exp->action == ACT_REMOVE)
6430 return 0;
6431
6432 done = 0;
6433
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6434 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6435 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6436
6437 /* Now we have the request line between cur_ptr and cur_end */
6438
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]6439 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]6440 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6441 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6442 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6443 done = 1;
6444 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6445
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6446 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6447 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6448 done = 1;
6449 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6450
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6451 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6452 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6453 done = 1;
6454 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6455
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6456 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]6457 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
6458 if (trash.len < 0)
6459 return -1;
6460
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6461 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6462 /* FIXME: if the user adds a newline in the replacement, the
6463 * index will not be recalculated for now, and the new line
6464 * will not be counted as a new header.
6465 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6466
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6467 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6468 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6469 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6470 HTTP_MSG_RQMETH,
6471 cur_ptr, cur_end + 1,
6472 NULL, NULL);
6473 if (unlikely(!cur_end))
6474 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6475
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6476 /* we have a full request and we know that we have either a CR
6477 * or an LF at <ptr>.
6478 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6479 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6480 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]6481 /* there is no point trying this regex on headers */
6482 return 1;
6483 }
6484 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6485 return done;
6486}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6487
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6488
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6489
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6490/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6491 * 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]6492 * 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]6493 * unparsable request. Since it can manage the switch to another backend, it
6494 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6495 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6496int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6497{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6498 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6499 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6500 struct hdr_exp *exp;
6501
6502 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6503 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6504
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6505 /*
6506 * The interleaving of transformations and verdicts
6507 * makes it difficult to decide to continue or stop
6508 * the evaluation.
6509 */
6510
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6511 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6512 break;
6513
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6514 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6515 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6516 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6517 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6518
6519 /* if this filter had a condition, evaluate it now and skip to
6520 * next filter if the condition does not match.
6521 */
6522 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6523 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]6524 ret = acl_pass(ret);
6525 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6526 ret = !ret;
6527
6528 if (!ret)
6529 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6530 }
6531
6532 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6533 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6534 if (unlikely(ret < 0))
6535 return -1;
6536
6537 if (likely(ret == 0)) {
6538 /* The filter did not match the request, it can be
6539 * iterated through all headers.
6540 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]6541 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
6542 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6543 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6544 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6545 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6546}
6547
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6548
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6549/* Find the end of a cookie value contained between <s> and <e>. It works the
6550 * same way as with headers above except that the semi-colon also ends a token.
6551 * See RFC2965 for more information. Note that it requires a valid header to
6552 * return a valid result.
6553 */
6554char *find_cookie_value_end(char *s, const char *e)
6555{
6556 int quoted, qdpair;
6557
6558 quoted = qdpair = 0;
6559 for (; s < e; s++) {
6560 if (qdpair) qdpair = 0;
6561 else if (quoted) {
6562 if (*s == '\\') qdpair = 1;
6563 else if (*s == '"') quoted = 0;
6564 }
6565 else if (*s == '"') quoted = 1;
6566 else if (*s == ',' || *s == ';') return s;
6567 }
6568 return s;
6569}
6570
6571/* Delete a value in a header between delimiters <from> and <next> in buffer
6572 * <buf>. The number of characters displaced is returned, and the pointer to
6573 * the first delimiter is updated if required. The function tries as much as
6574 * possible to respect the following principles :
6575 * - replace <from> delimiter by the <next> one unless <from> points to a
6576 * colon, in which case <next> is simply removed
6577 * - set exactly one space character after the new first delimiter, unless
6578 * there are not enough characters in the block being moved to do so.
6579 * - remove unneeded spaces before the previous delimiter and after the new
6580 * one.
6581 *
6582 * It is the caller's responsibility to ensure that :
6583 * - <from> points to a valid delimiter or the colon ;
6584 * - <next> points to a valid delimiter or the final CR/LF ;
6585 * - there are non-space chars before <from> ;
6586 * - there is a CR/LF at or after <next>.
6587 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6588int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6589{
6590 char *prev = *from;
6591
6592 if (*prev == ':') {
6593 /* We're removing the first value, preserve the colon and add a
6594 * space if possible.
6595 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]6596 if (!HTTP_IS_CRLF(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6597 next++;
6598 prev++;
6599 if (prev < next)
6600 *prev++ = ' ';
6601
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]6602 while (HTTP_IS_SPHT(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6603 next++;
6604 } else {
6605 /* Remove useless spaces before the old delimiter. */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]6606 while (HTTP_IS_SPHT(*(prev-1)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6607 prev--;
6608 *from = prev;
6609
6610 /* copy the delimiter and if possible a space if we're
6611 * not at the end of the line.
6612 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]6613 if (!HTTP_IS_CRLF(*next)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6614 *prev++ = *next++;
6615 if (prev + 1 < next)
6616 *prev++ = ' ';
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]6617 while (HTTP_IS_SPHT(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6618 next++;
6619 }
6620 }
6621 return buffer_replace2(buf, prev, next, NULL, 0);
6622}
6623
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6624/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6625 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6626 * desirable to call it only when needed. This code is quite complex because
6627 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6628 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6629 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6630void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6631{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6632 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6633 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6634 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6635 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6636 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6637 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6638
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6639 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6640 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6641 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6642
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6643 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6644 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6645 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6646
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6647 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6648 hdr_beg = hdr_next;
6649 hdr_end = hdr_beg + cur_hdr->len;
6650 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6651
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6652 /* We have one full header between hdr_beg and hdr_end, and the
6653 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6654 * "Cookie:" headers.
6655 */
6656
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6657 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6658 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6659 old_idx = cur_idx;
6660 continue;
6661 }
6662
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6663 del_from = NULL; /* nothing to be deleted */
6664 preserve_hdr = 0; /* assume we may kill the whole header */
6665
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6666 /* Now look for cookies. Conforming to RFC2109, we have to support
6667 * attributes whose name begin with a '$', and associate them with
6668 * the right cookie, if we want to delete this cookie.
6669 * So there are 3 cases for each cookie read :
6670 * 1) it's a special attribute, beginning with a '$' : ignore it.
6671 * 2) it's a server id cookie that we *MAY* want to delete : save
6672 * some pointers on it (last semi-colon, beginning of cookie...)
6673 * 3) it's an application cookie : we *MAY* have to delete a previous
6674 * "special" cookie.
6675 * At the end of loop, if a "special" cookie remains, we may have to
6676 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6677 * *MUST* delete it.
6678 *
6679 * Note: RFC2965 is unclear about the processing of spaces around
6680 * the equal sign in the ATTR=VALUE form. A careful inspection of
6681 * the RFC explicitly allows spaces before it, and not within the
6682 * tokens (attrs or values). An inspection of RFC2109 allows that
6683 * too but section 10.1.3 lets one think that spaces may be allowed
6684 * after the equal sign too, resulting in some (rare) buggy
6685 * implementations trying to do that. So let's do what servers do.
6686 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6687 * allowed quoted strings in values, with any possible character
6688 * after a backslash, including control chars and delimitors, which
6689 * causes parsing to become ambiguous. Browsers also allow spaces
6690 * within values even without quotes.
6691 *
6692 * We have to keep multiple pointers in order to support cookie
6693 * removal at the beginning, middle or end of header without
6694 * corrupting the header. All of these headers are valid :
6695 *
6696 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6697 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6698 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6699 * | | | | | | | | |
6700 * | | | | | | | | hdr_end <--+
6701 * | | | | | | | +--> next
6702 * | | | | | | +----> val_end
6703 * | | | | | +-----------> val_beg
6704 * | | | | +--------------> equal
6705 * | | | +----------------> att_end
6706 * | | +---------------------> att_beg
6707 * | +--------------------------> prev
6708 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6709 */
6710
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6711 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6712 /* Iterate through all cookies on this line */
6713
6714 /* find att_beg */
6715 att_beg = prev + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]6716 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6717 att_beg++;
6718
6719 /* find att_end : this is the first character after the last non
6720 * space before the equal. It may be equal to hdr_end.
6721 */
6722 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6723
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6724 while (equal < hdr_end) {
6725 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6726 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]6727 if (HTTP_IS_SPHT(*equal++))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6728 continue;
6729 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6730 }
6731
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6732 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6733 * is between <att_beg> and <equal>, both may be identical.
6734 */
6735
6736 /* look for end of cookie if there is an equal sign */
6737 if (equal < hdr_end && *equal == '=') {
6738 /* look for the beginning of the value */
6739 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]6740 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6741 val_beg++;
6742
6743 /* find the end of the value, respecting quotes */
6744 next = find_cookie_value_end(val_beg, hdr_end);
6745
6746 /* make val_end point to the first white space or delimitor after the value */
6747 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]6748 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6749 val_end--;
6750 } else {
6751 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6752 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6753
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6754 /* We have nothing to do with attributes beginning with '$'. However,
6755 * they will automatically be removed if a header before them is removed,
6756 * since they're supposed to be linked together.
6757 */
6758 if (*att_beg == '$')
6759 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6760
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6761 /* Ignore cookies with no equal sign */
6762 if (equal == next) {
6763 /* This is not our cookie, so we must preserve it. But if we already
6764 * scheduled another cookie for removal, we cannot remove the
6765 * complete header, but we can remove the previous block itself.
6766 */
6767 preserve_hdr = 1;
6768 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6769 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6770 val_end += delta;
6771 next += delta;
6772 hdr_end += delta;
6773 hdr_next += delta;
6774 cur_hdr->len += delta;
6775 http_msg_move_end(&txn->req, delta);
6776 prev = del_from;
6777 del_from = NULL;
6778 }
6779 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6780 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6781
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6782 /* if there are spaces around the equal sign, we need to
6783 * strip them otherwise we'll get trouble for cookie captures,
6784 * or even for rewrites. Since this happens extremely rarely,
6785 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6786 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6787 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6788 int stripped_before = 0;
6789 int stripped_after = 0;
6790
6791 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6792 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6793 equal += stripped_before;
6794 val_beg += stripped_before;
6795 }
6796
6797 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6798 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6799 val_beg += stripped_after;
6800 stripped_before += stripped_after;
6801 }
6802
6803 val_end += stripped_before;
6804 next += stripped_before;
6805 hdr_end += stripped_before;
6806 hdr_next += stripped_before;
6807 cur_hdr->len += stripped_before;
6808 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6809 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6810 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6811
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6812 /* First, let's see if we want to capture this cookie. We check
6813 * that we don't already have a client side cookie, because we
6814 * can only capture one. Also as an optimisation, we ignore
6815 * cookies shorter than the declared name.
6816 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6817 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6818 (val_end - att_beg >= sess->fe->capture_namelen) &&
6819 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6820 int log_len = val_end - att_beg;
6821
6822 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6823 Alert("HTTP logging : out of memory.\n");
6824 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6825 if (log_len > sess->fe->capture_len)
6826 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6827 memcpy(txn->cli_cookie, att_beg, log_len);
6828 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6829 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6830 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6831
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6832 /* Persistence cookies in passive, rewrite or insert mode have the
6833 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6834 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6835 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6836 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6837 * For cookies in prefix mode, the form is :
6838 *
6839 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6840 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6841 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
6842 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
6843 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6844 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6845
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6846 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6847 * have the server ID between val_beg and delim, and the original cookie between
6848 * delim+1 and val_end. Otherwise, delim==val_end :
6849 *
6850 * Cookie: NAME=SRV; # in all but prefix modes
6851 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6852 * | || || | |+-> next
6853 * | || || | +--> val_end
6854 * | || || +---------> delim
6855 * | || |+------------> val_beg
6856 * | || +-------------> att_end = equal
6857 * | |+-----------------> att_beg
6858 * | +------------------> prev
6859 * +-------------------------> hdr_beg
6860 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6861
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6862 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6863 for (delim = val_beg; delim < val_end; delim++)
6864 if (*delim == COOKIE_DELIM)
6865 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6866 } else {
6867 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6868 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6869 /* Now check if the cookie contains a date field, which would
6870 * appear after a vertical bar ('|') just after the server name
6871 * and before the delimiter.
6872 */
6873 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6874 if (vbar1) {
6875 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6876 * right is the last seen date. It is a base64 encoded
6877 * 30-bit value representing the UNIX date since the
6878 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6879 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6880 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6881 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6882 if (val_end - vbar1 >= 5) {
6883 val = b64tos30(vbar1);
6884 if (val > 0)
6885 txn->cookie_last_date = val << 2;
6886 }
6887 /* look for a second vertical bar */
6888 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6889 if (vbar1 && (val_end - vbar1 > 5)) {
6890 val = b64tos30(vbar1 + 1);
6891 if (val > 0)
6892 txn->cookie_first_date = val << 2;
6893 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6894 }
6895 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6896
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6897 /* if the cookie has an expiration date and the proxy wants to check
6898 * it, then we do that now. We first check if the cookie is too old,
6899 * then only if it has expired. We detect strict overflow because the
6900 * time resolution here is not great (4 seconds). Cookies with dates
6901 * in the future are ignored if their offset is beyond one day. This
6902 * allows an admin to fix timezone issues without expiring everyone
6903 * and at the same time avoids keeping unwanted side effects for too
6904 * long.
6905 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6906 if (txn->cookie_first_date && s->be->cookie_maxlife &&
6907 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6908 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6909 txn->flags &= ~TX_CK_MASK;
6910 txn->flags |= TX_CK_OLD;
6911 delim = val_beg; // let's pretend we have not found the cookie
6912 txn->cookie_first_date = 0;
6913 txn->cookie_last_date = 0;
6914 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6915 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
6916 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6917 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6918 txn->flags &= ~TX_CK_MASK;
6919 txn->flags |= TX_CK_EXPIRED;
6920 delim = val_beg; // let's pretend we have not found the cookie
6921 txn->cookie_first_date = 0;
6922 txn->cookie_last_date = 0;
6923 }
6924
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6925 /* Here, we'll look for the first running server which supports the cookie.
6926 * This allows to share a same cookie between several servers, for example
6927 * to dedicate backup servers to specific servers only.
6928 * However, to prevent clients from sticking to cookie-less backup server
6929 * when they have incidentely learned an empty cookie, we simply ignore
6930 * empty cookies and mark them as invalid.
6931 * The same behaviour is applied when persistence must be ignored.
6932 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6933 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6934 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6935
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6936 while (srv) {
6937 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6938 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Emeric Brun52a91d32017-08-31 14:41:55 +0200[diff] [blame]6939 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6940 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6941 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6942 /* we found the server and we can use it */
6943 txn->flags &= ~TX_CK_MASK;
Emeric Brun52a91d32017-08-31 14:41:55 +0200[diff] [blame]6944 txn->flags |= (srv->cur_state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6945 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6946 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6947 break;
6948 } else {
6949 /* we found a server, but it's down,
6950 * mark it as such and go on in case
6951 * another one is available.
6952 */
6953 txn->flags &= ~TX_CK_MASK;
6954 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6955 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6956 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6957 srv = srv->next;
6958 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6959
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6960 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6961 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6962 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6963 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6964 txn->flags |= TX_CK_UNUSED;
6965 else
6966 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6967 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6968
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6969 /* depending on the cookie mode, we may have to either :
6970 * - delete the complete cookie if we're in insert+indirect mode, so that
6971 * the server never sees it ;
6972 * - remove the server id from the cookie value, and tag the cookie as an
6973 * application cookie so that it does not get accidentely removed later,
6974 * if we're in cookie prefix mode
6975 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6976 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6977 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6978
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6979 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6980 val_end += delta;
6981 next += delta;
6982 hdr_end += delta;
6983 hdr_next += delta;
6984 cur_hdr->len += delta;
6985 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6986
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6987 del_from = NULL;
6988 preserve_hdr = 1; /* we want to keep this cookie */
6989 }
6990 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6991 (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]6992 del_from = prev;
6993 }
6994 } else {
6995 /* This is not our cookie, so we must preserve it. But if we already
6996 * scheduled another cookie for removal, we cannot remove the
6997 * complete header, but we can remove the previous block itself.
6998 */
6999 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7000
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7001 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7002 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7003 if (att_beg >= del_from)
7004 att_beg += delta;
7005 if (att_end >= del_from)
7006 att_end += delta;
7007 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7008 val_end += delta;
7009 next += delta;
7010 hdr_end += delta;
7011 hdr_next += delta;
7012 cur_hdr->len += delta;
7013 http_msg_move_end(&txn->req, delta);
7014 prev = del_from;
7015 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7016 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7017 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7018
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7019 /* continue with next cookie on this header line */
7020 att_beg = next;
7021 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7022
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7023 /* There are no more cookies on this line.
7024 * We may still have one (or several) marked for deletion at the
7025 * end of the line. We must do this now in two ways :
7026 * - if some cookies must be preserved, we only delete from the
7027 * mark to the end of line ;
7028 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7029 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7030 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7031 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7032 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7033 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7034 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7035 cur_hdr->len += delta;
7036 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7037 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7038
7039 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7040 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7041 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7042 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7043 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7044 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7045 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7046 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7047 }
7048
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7049 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7050 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7051 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7052}
7053
7054
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7055/* Iterate the same filter through all response headers contained in <rtr>.
7056 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7057 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7058int 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]7059{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7060 char *cur_ptr, *cur_end, *cur_next;
7061 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7062 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7063 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7064 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7065
7066 last_hdr = 0;
7067
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7068 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7069 old_idx = 0;
7070
7071 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7072 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7073 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7074 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7075 (exp->action == ACT_ALLOW ||
7076 exp->action == ACT_DENY))
7077 return 0;
7078
7079 cur_idx = txn->hdr_idx.v[old_idx].next;
7080 if (!cur_idx)
7081 break;
7082
7083 cur_hdr = &txn->hdr_idx.v[cur_idx];
7084 cur_ptr = cur_next;
7085 cur_end = cur_ptr + cur_hdr->len;
7086 cur_next = cur_end + cur_hdr->cr + 1;
7087
7088 /* Now we have one header between cur_ptr and cur_end,
7089 * and the next header starts at cur_next.
7090 */
7091
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7092 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]7093 switch (exp->action) {
7094 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7095 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7096 last_hdr = 1;
7097 break;
7098
7099 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7100 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7101 last_hdr = 1;
7102 break;
7103
7104 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7105 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7106 if (trash.len < 0)
7107 return -1;
7108
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7109 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7110 /* FIXME: if the user adds a newline in the replacement, the
7111 * index will not be recalculated for now, and the new line
7112 * will not be counted as a new header.
7113 */
7114
7115 cur_end += delta;
7116 cur_next += delta;
7117 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7118 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7119 break;
7120
7121 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7122 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7123 cur_next += delta;
7124
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7125 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7126 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7127 txn->hdr_idx.used--;
7128 cur_hdr->len = 0;
7129 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7130 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7131 break;
7132
7133 }
7134 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7135
7136 /* keep the link from this header to next one in case of later
7137 * removal of next header.
7138 */
7139 old_idx = cur_idx;
7140 }
7141 return 0;
7142}
7143
7144
7145/* Apply the filter to the status line in the response buffer <rtr>.
7146 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7147 * or -1 if a replacement resulted in an invalid status line.
7148 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7149int 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]7150{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7151 char *cur_ptr, *cur_end;
7152 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7153 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7154 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7155
7156
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7157 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7158 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7159 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7160 (exp->action == ACT_ALLOW ||
7161 exp->action == ACT_DENY))
7162 return 0;
7163 else if (exp->action == ACT_REMOVE)
7164 return 0;
7165
7166 done = 0;
7167
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7168 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7169 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7170
7171 /* Now we have the status line between cur_ptr and cur_end */
7172
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7173 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]7174 switch (exp->action) {
7175 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7176 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7177 done = 1;
7178 break;
7179
7180 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7181 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7182 done = 1;
7183 break;
7184
7185 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7186 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7187 if (trash.len < 0)
7188 return -1;
7189
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7190 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7191 /* FIXME: if the user adds a newline in the replacement, the
7192 * index will not be recalculated for now, and the new line
7193 * will not be counted as a new header.
7194 */
7195
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7196 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7197 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7198 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7199 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7200 cur_ptr, cur_end + 1,
7201 NULL, NULL);
7202 if (unlikely(!cur_end))
7203 return -1;
7204
7205 /* we have a full respnse and we know that we have either a CR
7206 * or an LF at <ptr>.
7207 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7208 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]7209 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]7210 /* there is no point trying this regex on headers */
7211 return 1;
7212 }
7213 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7214 return done;
7215}
7216
7217
7218
7219/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7220 * 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]7221 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7222 * unparsable response.
7223 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7224int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7225{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7226 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7227 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7228 struct hdr_exp *exp;
7229
7230 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7231 int ret;
7232
7233 /*
7234 * The interleaving of transformations and verdicts
7235 * makes it difficult to decide to continue or stop
7236 * the evaluation.
7237 */
7238
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7239 if (txn->flags & TX_SVDENY)
7240 break;
7241
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7242 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7243 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7244 exp->action == ACT_PASS)) {
7245 exp = exp->next;
7246 continue;
7247 }
7248
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7249 /* if this filter had a condition, evaluate it now and skip to
7250 * next filter if the condition does not match.
7251 */
7252 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7253 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]7254 ret = acl_pass(ret);
7255 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7256 ret = !ret;
7257 if (!ret)
7258 continue;
7259 }
7260
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7261 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7262 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7263 if (unlikely(ret < 0))
7264 return -1;
7265
7266 if (likely(ret == 0)) {
7267 /* The filter did not match the response, it can be
7268 * iterated through all headers.
7269 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7270 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
7271 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7272 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7273 }
7274 return 0;
7275}
7276
7277
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7278/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7279 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7280 * desirable to call it only when needed. This function is also used when we
7281 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7282 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7283void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7284{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7285 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7286 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7287 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7288 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7289 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7290 char *hdr_beg, *hdr_end, *hdr_next;
7291 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7292
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7293 /* Iterate through the headers.
7294 * we start with the start line.
7295 */
7296 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7297 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7298
7299 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7300 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7301 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7302
7303 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7304 hdr_beg = hdr_next;
7305 hdr_end = hdr_beg + cur_hdr->len;
7306 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7307
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7308 /* We have one full header between hdr_beg and hdr_end, and the
7309 * next header starts at hdr_next. We're only interested in
7310 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7311 */
7312
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7313 is_cookie2 = 0;
7314 prev = hdr_beg + 10;
7315 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7316 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7317 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7318 if (!val) {
7319 old_idx = cur_idx;
7320 continue;
7321 }
7322 is_cookie2 = 1;
7323 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7324 }
7325
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7326 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7327 * <prev> points to the colon.
7328 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7329 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7330
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7331 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7332 * check-cache is enabled) and we are not interested in checking
7333 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7334 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]7335 if (s->be->cookie_name == NULL && sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7336 return;
7337
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7338 /* OK so now we know we have to process this response cookie.
7339 * The format of the Set-Cookie header is slightly different
7340 * from the format of the Cookie header in that it does not
7341 * support the comma as a cookie delimiter (thus the header
7342 * cannot be folded) because the Expires attribute described in
7343 * the original Netscape's spec may contain an unquoted date
7344 * with a comma inside. We have to live with this because
7345 * many browsers don't support Max-Age and some browsers don't
7346 * support quoted strings. However the Set-Cookie2 header is
7347 * clean.
7348 *
7349 * We have to keep multiple pointers in order to support cookie
7350 * removal at the beginning, middle or end of header without
7351 * corrupting the header (in case of set-cookie2). A special
7352 * pointer, <scav> points to the beginning of the set-cookie-av
7353 * fields after the first semi-colon. The <next> pointer points
7354 * either to the end of line (set-cookie) or next unquoted comma
7355 * (set-cookie2). All of these headers are valid :
7356 *
7357 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7358 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7359 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7360 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7361 * | | | | | | | | | |
7362 * | | | | | | | | +-> next hdr_end <--+
7363 * | | | | | | | +------------> scav
7364 * | | | | | | +--------------> val_end
7365 * | | | | | +--------------------> val_beg
7366 * | | | | +----------------------> equal
7367 * | | | +------------------------> att_end
7368 * | | +----------------------------> att_beg
7369 * | +------------------------------> prev
7370 * +-----------------------------------------> hdr_beg
7371 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7372
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7373 for (; prev < hdr_end; prev = next) {
7374 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7375
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7376 /* find att_beg */
7377 att_beg = prev + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7378 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7379 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7380
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7381 /* find att_end : this is the first character after the last non
7382 * space before the equal. It may be equal to hdr_end.
7383 */
7384 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7385
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7386 while (equal < hdr_end) {
7387 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7388 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7389 if (HTTP_IS_SPHT(*equal++))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7390 continue;
7391 att_end = equal;
7392 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7393
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7394 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7395 * is between <att_beg> and <equal>, both may be identical.
7396 */
7397
7398 /* look for end of cookie if there is an equal sign */
7399 if (equal < hdr_end && *equal == '=') {
7400 /* look for the beginning of the value */
7401 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7402 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7403 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7404
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7405 /* find the end of the value, respecting quotes */
7406 next = find_cookie_value_end(val_beg, hdr_end);
7407
7408 /* make val_end point to the first white space or delimitor after the value */
7409 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7410 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7411 val_end--;
7412 } else {
7413 /* <equal> points to next comma, semi-colon or EOL */
7414 val_beg = val_end = next = equal;
7415 }
7416
7417 if (next < hdr_end) {
7418 /* Set-Cookie2 supports multiple cookies, and <next> points to
7419 * a colon or semi-colon before the end. So skip all attr-value
7420 * pairs and look for the next comma. For Set-Cookie, since
7421 * commas are permitted in values, skip to the end.
7422 */
7423 if (is_cookie2)
7424 next = find_hdr_value_end(next, hdr_end);
7425 else
7426 next = hdr_end;
7427 }
7428
7429 /* Now everything is as on the diagram above */
7430
7431 /* Ignore cookies with no equal sign */
7432 if (equal == val_end)
7433 continue;
7434
7435 /* If there are spaces around the equal sign, we need to
7436 * strip them otherwise we'll get trouble for cookie captures,
7437 * or even for rewrites. Since this happens extremely rarely,
7438 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7439 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7440 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7441 int stripped_before = 0;
7442 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7443
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7444 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7445 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7446 equal += stripped_before;
7447 val_beg += stripped_before;
7448 }
7449
7450 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7451 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7452 val_beg += stripped_after;
7453 stripped_before += stripped_after;
7454 }
7455
7456 val_end += stripped_before;
7457 next += stripped_before;
7458 hdr_end += stripped_before;
7459 hdr_next += stripped_before;
7460 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7461 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7462 }
7463
7464 /* First, let's see if we want to capture this cookie. We check
7465 * that we don't already have a server side cookie, because we
7466 * can only capture one. Also as an optimisation, we ignore
7467 * cookies shorter than the declared name.
7468 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7469 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7470 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7471 (val_end - att_beg >= sess->fe->capture_namelen) &&
7472 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7473 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7474 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7475 Alert("HTTP logging : out of memory.\n");
7476 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7477 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7478 if (log_len > sess->fe->capture_len)
7479 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7480 memcpy(txn->srv_cookie, att_beg, log_len);
7481 txn->srv_cookie[log_len] = 0;
7482 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7483 }
7484
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7485 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7486 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7487 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7488 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7489 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7490 /* assume passive cookie by default */
7491 txn->flags &= ~TX_SCK_MASK;
7492 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7493
7494 /* If the cookie is in insert mode on a known server, we'll delete
7495 * this occurrence because we'll insert another one later.
7496 * 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]7497 * a direct access.
7498 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7499 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7500 /* The "preserve" flag was set, we don't want to touch the
7501 * server's cookie.
7502 */
7503 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7504 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7505 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7506 /* this cookie must be deleted */
7507 if (*prev == ':' && next == hdr_end) {
7508 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7509 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7510 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7511 txn->hdr_idx.used--;
7512 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7513 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7514 hdr_next += delta;
7515 http_msg_move_end(&txn->rsp, delta);
7516 /* note: while both invalid now, <next> and <hdr_end>
7517 * are still equal, so the for() will stop as expected.
7518 */
7519 } else {
7520 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7521 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7522 next = prev;
7523 hdr_end += delta;
7524 hdr_next += delta;
7525 cur_hdr->len += delta;
7526 http_msg_move_end(&txn->rsp, delta);
7527 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7528 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7529 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7530 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7531 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7532 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7533 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7534 * with this server since we know it.
7535 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7536 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7537 next += delta;
7538 hdr_end += delta;
7539 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7540 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7541 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7542
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7543 txn->flags &= ~TX_SCK_MASK;
7544 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7545 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7546 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7547 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7548 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7549 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7550 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7551 next += delta;
7552 hdr_end += delta;
7553 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7554 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7555 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7556
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7557 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7558 txn->flags &= ~TX_SCK_MASK;
7559 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7560 }
7561 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7562 /* that's done for this cookie, check the next one on the same
7563 * line when next != hdr_end (only if is_cookie2).
7564 */
7565 }
7566 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7567 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7568 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7569}
7570
7571
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7572/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7573 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7574 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7575void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7576{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7577 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7578 char *p1, *p2;
7579
7580 char *cur_ptr, *cur_end, *cur_next;
7581 int cur_idx;
7582
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7583 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7584 return;
7585
7586 /* Iterate through the headers.
7587 * we start with the start line.
7588 */
7589 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7590 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7591
7592 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7593 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7594 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7595
7596 cur_hdr = &txn->hdr_idx.v[cur_idx];
7597 cur_ptr = cur_next;
7598 cur_end = cur_ptr + cur_hdr->len;
7599 cur_next = cur_end + cur_hdr->cr + 1;
7600
7601 /* We have one full header between cur_ptr and cur_end, and the
7602 * next header starts at cur_next. We're only interested in
7603 * "Cookie:" headers.
7604 */
7605
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7606 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7607 if (val) {
7608 if ((cur_end - (cur_ptr + val) >= 8) &&
7609 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7610 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7611 return;
7612 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7613 }
7614
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7615 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7616 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7617 continue;
7618
7619 /* OK, right now we know we have a cache-control header at cur_ptr */
7620
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7621 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7622
7623 if (p1 >= cur_end) /* no more info */
7624 continue;
7625
7626 /* p1 is at the beginning of the value */
7627 p2 = p1;
7628
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7629 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7630 p2++;
7631
7632 /* we have a complete value between p1 and p2 */
7633 if (p2 < cur_end && *p2 == '=') {
7634 /* we have something of the form no-cache="set-cookie" */
7635 if ((cur_end - p1 >= 21) &&
7636 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7637 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7638 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7639 continue;
7640 }
7641
7642 /* OK, so we know that either p2 points to the end of string or to a comma */
7643 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]7644 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7645 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7646 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7647 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7648 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7649 return;
7650 }
7651
7652 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7653 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7654 continue;
7655 }
7656 }
7657}
7658
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7659
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7660/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7661 * 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]7662 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7663 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7664 * 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]7665 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7666 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7667 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7668 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7669int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7670{
7671 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7672 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7673 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7674
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7675 if (!uri_auth)
7676 return 0;
7677
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7678 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]7679 return 0;
7680
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7681 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7682 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7683 return 0;
7684
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]7685 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7686 return 0;
7687
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7688 return 1;
7689}
7690
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7691/*
7692 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7693 * By default it tries to report the error position as msg->err_pos. However if
7694 * this one is not set, it will then report msg->next, which is the last known
7695 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7696 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7697 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7698void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7699 struct http_msg *msg,
Willy Tarreau0da5b3b2017-09-21 09:30:46 +0200[diff] [blame]7700 enum h1_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7701{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]7702 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7703 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7704 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7705
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]7706 es->len = MIN(chn->buf->i, global.tune.bufsize);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7707 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7708 len1 = MIN(len1, es->len);
7709 len2 = es->len - len1; /* remaining data if buffer wraps */
7710
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]7711 if (!es->buf)
7712 es->buf = malloc(global.tune.bufsize);
7713
7714 if (es->buf) {
7715 memcpy(es->buf, chn->buf->p, len1);
7716 if (len2)
7717 memcpy(es->buf + len1, chn->buf->data, len2);
7718 }
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7719
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7720 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7721 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7722 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7723 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7724
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7725 es->when = date; // user-visible date
7726 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7727 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7728 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]7729 if (objt_conn(sess->origin))
7730 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]7731 else
7732 memset(&es->src, 0, sizeof(es->src));
7733
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7734 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7735 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7736 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7737 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7738 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7739 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7740 es->b_out = chn->buf->o;
7741 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7742 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7743 es->m_clen = msg->chunk_len;
7744 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7745}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7746
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7747/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7748 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7749 * performed over the whole headers. Otherwise it must contain a valid header
7750 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7751 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7752 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7753 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7754 * -1. The value fetch stops at commas, so this function is suited for use with
7755 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7756 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7757 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7758unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7759 struct hdr_idx *idx, int occ,
7760 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7761{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7762 struct hdr_ctx local_ctx;
7763 char *ptr_hist[MAX_HDR_HISTORY];
7764 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7765 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7766 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7767
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7768 if (!ctx) {
7769 local_ctx.idx = 0;
7770 ctx = &local_ctx;
7771 }
7772
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7773 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7774 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7775 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7776 occ--;
7777 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7778 *vptr = ctx->line + ctx->val;
7779 *vlen = ctx->vlen;
7780 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7781 }
7782 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7783 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7784 }
7785
7786 /* negative occurrence, we scan all the list then walk back */
7787 if (-occ > MAX_HDR_HISTORY)
7788 return 0;
7789
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7790 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7791 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7792 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7793 len_hist[hist_ptr] = ctx->vlen;
7794 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7795 hist_ptr = 0;
7796 found++;
7797 }
7798 if (-occ > found)
7799 return 0;
7800 /* 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]7801 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
7802 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
7803 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7804 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]7805 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7806 if (hist_ptr >= MAX_HDR_HISTORY)
7807 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7808 *vptr = ptr_hist[hist_ptr];
7809 *vlen = len_hist[hist_ptr];
7810 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7811}
7812
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7813/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7814 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7815 * performed over the whole headers. Otherwise it must contain a valid header
7816 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7817 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7818 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7819 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7820 * -1. This function differs from http_get_hdr() in that it only returns full
7821 * line header values and does not stop at commas.
7822 * The return value is 0 if nothing was found, or non-zero otherwise.
7823 */
7824unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
7825 struct hdr_idx *idx, int occ,
7826 struct hdr_ctx *ctx, char **vptr, int *vlen)
7827{
7828 struct hdr_ctx local_ctx;
7829 char *ptr_hist[MAX_HDR_HISTORY];
7830 int len_hist[MAX_HDR_HISTORY];
7831 unsigned int hist_ptr;
7832 int found;
7833
7834 if (!ctx) {
7835 local_ctx.idx = 0;
7836 ctx = &local_ctx;
7837 }
7838
7839 if (occ >= 0) {
7840 /* search from the beginning */
7841 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
7842 occ--;
7843 if (occ <= 0) {
7844 *vptr = ctx->line + ctx->val;
7845 *vlen = ctx->vlen;
7846 return 1;
7847 }
7848 }
7849 return 0;
7850 }
7851
7852 /* negative occurrence, we scan all the list then walk back */
7853 if (-occ > MAX_HDR_HISTORY)
7854 return 0;
7855
7856 found = hist_ptr = 0;
7857 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
7858 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7859 len_hist[hist_ptr] = ctx->vlen;
7860 if (++hist_ptr >= MAX_HDR_HISTORY)
7861 hist_ptr = 0;
7862 found++;
7863 }
7864 if (-occ > found)
7865 return 0;
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]7866
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7867 /* 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]7868 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
7869 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
7870 * to remain in the 0..9 range.
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7871 */
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]7872 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7873 if (hist_ptr >= MAX_HDR_HISTORY)
7874 hist_ptr -= MAX_HDR_HISTORY;
7875 *vptr = ptr_hist[hist_ptr];
7876 *vlen = len_hist[hist_ptr];
7877 return 1;
7878}
7879
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7880/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7881 * Print a debug line with a header. Always stop at the first CR or LF char,
7882 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7883 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7884 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7885void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7886{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]7887 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7888 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]7889
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7890 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]7891 dir,
Willy Tarreau585744b2017-08-24 14:31:19 +0200[diff] [blame]7892 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->handle.fd : -1,
7893 objt_conn(s->si[1].end) ? (unsigned short)objt_conn(s->si[1].end)->handle.fd : -1);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7894
7895 for (max = 0; start + max < end; max++)
7896 if (start[max] == '\r' || start[max] == '\n')
7897 break;
7898
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7899 UBOUND(max, trash.size - trash.len - 3);
7900 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7901 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]7902 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7903}
7904
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7905
7906/* Allocate a new HTTP transaction for stream <s> unless there is one already.
7907 * The hdr_idx is allocated as well. In case of allocation failure, everything
7908 * allocated is freed and NULL is returned. Otherwise the new transaction is
7909 * assigned to the stream and returned.
7910 */
7911struct http_txn *http_alloc_txn(struct stream *s)
7912{
7913 struct http_txn *txn = s->txn;
7914
7915 if (txn)
7916 return txn;
7917
7918 txn = pool_alloc2(pool2_http_txn);
7919 if (!txn)
7920 return txn;
7921
7922 txn->hdr_idx.size = global.tune.max_http_hdr;
7923 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
7924 if (!txn->hdr_idx.v) {
7925 pool_free2(pool2_http_txn, txn);
7926 return NULL;
7927 }
7928
7929 s->txn = txn;
7930 return txn;
7931}
7932
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]7933void http_txn_reset_req(struct http_txn *txn)
7934{
7935 txn->req.flags = 0;
7936 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
7937 txn->req.next = 0;
7938 txn->req.chunk_len = 0LL;
7939 txn->req.body_len = 0LL;
7940 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7941}
7942
7943void http_txn_reset_res(struct http_txn *txn)
7944{
7945 txn->rsp.flags = 0;
7946 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
7947 txn->rsp.next = 0;
7948 txn->rsp.chunk_len = 0LL;
7949 txn->rsp.body_len = 0LL;
7950 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
7951}
7952
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7953/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7954 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7955 * the required fields are properly allocated and that we only need to (re)init
7956 * them. This should be used before processing any new request.
7957 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7958void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7959{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7960 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]7961 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7962
7963 txn->flags = 0;
7964 txn->status = -1;
7965
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7966 txn->cookie_first_date = 0;
7967 txn->cookie_last_date = 0;
7968
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7969 txn->srv_cookie = NULL;
7970 txn->cli_cookie = NULL;
7971 txn->uri = NULL;
7972
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]7973 http_txn_reset_req(txn);
7974 http_txn_reset_res(txn);
7975
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7976 txn->req.chn = &s->req;
7977 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7978
7979 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7980
7981 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7982 if (fe->options2 & PR_O2_REQBUG_OK)
7983 txn->req.err_pos = -1; /* let buggy requests pass */
7984
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7985 if (txn->hdr_idx.v)
7986 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]7987
7988 vars_init(&s->vars_txn, SCOPE_TXN);
7989 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7990}
7991
7992/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7993void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7994{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7995 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]7996 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7997
7998 /* these ones will have been dynamically allocated */
7999 pool_free2(pool2_requri, txn->uri);
8000 pool_free2(pool2_capture, txn->cli_cookie);
8001 pool_free2(pool2_capture, txn->srv_cookie);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8002 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8003
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8004 s->unique_id = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8005 txn->uri = NULL;
8006 txn->srv_cookie = NULL;
8007 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8008
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8009 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8010 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8011 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8012 pool_free2(h->pool, s->req_cap[h->index]);
8013 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8014 }
8015
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8016 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8017 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8018 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8019 pool_free2(h->pool, s->res_cap[h->index]);
8020 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8021 }
8022
Willy Tarreau6204cd92016-03-10 16:33:04 +0100[diff] [blame]8023 vars_prune(&s->vars_txn, s->sess, s);
8024 vars_prune(&s->vars_reqres, s->sess, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8025}
8026
8027/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8028void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8029{
8030 http_end_txn(s);
8031 http_init_txn(s);
8032
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]8033 /* reinitialise the current rule list pointer to NULL. We are sure that
8034 * any rulelist match the NULL pointer.
8035 */
8036 s->current_rule_list = NULL;
8037
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8038 s->be = strm_fe(s);
8039 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8040 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8041 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8042 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8043 /* re-init store persistence */
8044 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8045 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8046
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8047 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8048
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8049 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8050
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8051 /* We must trim any excess data from the response buffer, because we
8052 * may have blocked an invalid response from a server that we don't
8053 * want to accidentely forward once we disable the analysers, nor do
8054 * we want those data to come along with next response. A typical
8055 * example of such data would be from a buggy server responding to
8056 * a HEAD with some data, or sending more than the advertised
8057 * content-length.
8058 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8059 if (unlikely(s->res.buf->i))
8060 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8061
Christopher Fauletc0c672a2017-03-28 11:51:33 +0200[diff] [blame]8062 /* Now we can realign the response buffer */
8063 buffer_realign(s->res.buf);
8064
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8065 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8066 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8067
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8068 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8069 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8070
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8071 s->req.rex = TICK_ETERNITY;
8072 s->req.wex = TICK_ETERNITY;
8073 s->req.analyse_exp = TICK_ETERNITY;
8074 s->res.rex = TICK_ETERNITY;
8075 s->res.wex = TICK_ETERNITY;
8076 s->res.analyse_exp = TICK_ETERNITY;
Hongbo Longe39683c2017-03-10 18:41:51 +0100[diff] [blame]8077 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8078}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8079
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8080void free_http_res_rules(struct list *r)
8081{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8082 struct act_rule *tr, *pr;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8083
8084 list_for_each_entry_safe(pr, tr, r, list) {
8085 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8086 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8087 free(pr);
8088 }
8089}
8090
8091void free_http_req_rules(struct list *r)
8092{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8093 struct act_rule *tr, *pr;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8094
8095 list_for_each_entry_safe(pr, tr, r, list) {
8096 LIST_DEL(&pr->list);
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8097 if (pr->action == ACT_HTTP_REQ_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8098 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8099
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8100 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8101 free(pr);
8102 }
8103}
8104
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8105/* parse an "http-request" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8106struct 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]8107{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8108 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]8109 struct action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8110 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8111 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8112
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]8113 rule = calloc(1, sizeof(*rule));
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8114 if (!rule) {
8115 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8116 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8117 }
8118
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8119 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8120 rule->action = ACT_ACTION_ALLOW;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8121 cur_arg = 1;
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]8122 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block") || !strcmp(args[0], "tarpit")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8123 int code;
8124 int hc;
8125
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]8126 if (!strcmp(args[0], "tarpit")) {
8127 rule->action = ACT_HTTP_REQ_TARPIT;
8128 rule->deny_status = HTTP_ERR_500;
8129 }
8130 else {
8131 rule->action = ACT_ACTION_DENY;
8132 rule->deny_status = HTTP_ERR_403;
8133 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8134 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8135 if (strcmp(args[cur_arg], "deny_status") == 0) {
8136 cur_arg++;
8137 if (!args[cur_arg]) {
8138 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
8139 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
8140 goto out_err;
8141 }
8142
8143 code = atol(args[cur_arg]);
8144 cur_arg++;
8145 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
8146 if (http_err_codes[hc] == code) {
8147 rule->deny_status = hc;
8148 break;
8149 }
8150 }
8151
8152 if (hc >= HTTP_ERR_SIZE) {
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]8153 Warning("parsing [%s:%d] : status code %d not handled, using default code %d.\n",
8154 file, linenum, code, http_err_codes[rule->deny_status]);
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8155 }
8156 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8157 } else if (!strcmp(args[0], "auth")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8158 rule->action = ACT_HTTP_REQ_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8159 cur_arg = 1;
8160
8161 while(*args[cur_arg]) {
8162 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8163 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8164 cur_arg+=2;
8165 continue;
8166 } else
8167 break;
8168 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8169 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8170 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8171 cur_arg = 1;
8172
8173 if (!*args[cur_arg] ||
8174 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8175 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8176 file, linenum, args[0]);
8177 goto out_err;
8178 }
8179 rule->arg.nice = atoi(args[cur_arg]);
8180 if (rule->arg.nice < -1024)
8181 rule->arg.nice = -1024;
8182 else if (rule->arg.nice > 1024)
8183 rule->arg.nice = 1024;
8184 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8185 } else if (!strcmp(args[0], "set-tos")) {
8186#ifdef IP_TOS
8187 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8188 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8189 cur_arg = 1;
8190
8191 if (!*args[cur_arg] ||
8192 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8193 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8194 file, linenum, args[0]);
8195 goto out_err;
8196 }
8197
8198 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8199 if (err && *err != '\0') {
8200 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8201 file, linenum, err, args[0]);
8202 goto out_err;
8203 }
8204 cur_arg++;
8205#else
8206 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8207 goto out_err;
8208#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8209 } else if (!strcmp(args[0], "set-mark")) {
8210#ifdef SO_MARK
8211 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8212 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8213 cur_arg = 1;
8214
8215 if (!*args[cur_arg] ||
8216 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8217 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8218 file, linenum, args[0]);
8219 goto out_err;
8220 }
8221
8222 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8223 if (err && *err != '\0') {
8224 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8225 file, linenum, err, args[0]);
8226 goto out_err;
8227 }
8228 cur_arg++;
8229 global.last_checks |= LSTCHK_NETADM;
8230#else
8231 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8232 goto out_err;
8233#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8234 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8235 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8236 cur_arg = 1;
8237
8238 if (!*args[cur_arg] ||
8239 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8240 bad_log_level:
8241 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8242 file, linenum, args[0]);
8243 goto out_err;
8244 }
8245 if (strcmp(args[cur_arg], "silent") == 0)
8246 rule->arg.loglevel = -1;
8247 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8248 goto bad_log_level;
8249 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8250 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8251 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8252 cur_arg = 1;
8253
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8254 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8255 (*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]8256 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8257 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8258 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8259 }
8260
8261 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8262 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8263 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8264
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8265 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]8266 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8267 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]8268 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
8269 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
8270 file, linenum, args[0], error);
8271 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8272 goto out_err;
8273 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8274 free(proxy->conf.lfs_file);
8275 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8276 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8277 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]8278 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8279 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8280 cur_arg = 1;
8281
8282 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]8283 (*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]8284 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
8285 file, linenum, args[0]);
8286 goto out_err;
8287 }
8288
8289 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8290 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8291 LIST_INIT(&rule->arg.hdr_add.fmt);
8292
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8293 error = NULL;
8294 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
8295 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
8296 args[cur_arg + 1], error);
8297 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8298 goto out_err;
8299 }
8300
8301 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]8302 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8303 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]8304 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
8305 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
8306 file, linenum, args[0], error);
8307 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8308 goto out_err;
8309 }
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8310
8311 free(proxy->conf.lfs_file);
8312 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8313 proxy->conf.lfs_line = proxy->conf.args.line;
8314 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8315 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8316 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8317 cur_arg = 1;
8318
8319 if (!*args[cur_arg] ||
8320 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8321 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
8322 file, linenum, args[0]);
8323 goto out_err;
8324 }
8325
8326 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8327 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8328
8329 proxy->conf.args.ctx = ARGC_HRQ;
8330 free(proxy->conf.lfs_file);
8331 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8332 proxy->conf.lfs_line = proxy->conf.args.line;
8333 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]8334 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
8335 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]8336 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]8337 struct sample_expr *expr;
8338 unsigned int where;
8339 char *err = NULL;
8340
8341 cur_arg = 1;
8342 proxy->conf.args.ctx = ARGC_TRK;
8343
8344 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
8345 if (!expr) {
8346 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8347 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
8348 free(err);
8349 goto out_err;
8350 }
8351
8352 where = 0;
8353 if (proxy->cap & PR_CAP_FE)
8354 where |= SMP_VAL_FE_HRQ_HDR;
8355 if (proxy->cap & PR_CAP_BE)
8356 where |= SMP_VAL_BE_HRQ_HDR;
8357
8358 if (!(expr->fetch->val & where)) {
8359 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
8360 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
8361 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
8362 args[cur_arg-1], sample_src_names(expr->fetch->use));
8363 free(expr);
8364 goto out_err;
8365 }
8366
8367 if (strcmp(args[cur_arg], "table") == 0) {
8368 cur_arg++;
8369 if (!args[cur_arg]) {
8370 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
8371 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
8372 free(expr);
8373 goto out_err;
8374 }
8375 /* we copy the table name for now, it will be resolved later */
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]8376 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]8377 cur_arg++;
8378 }
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]8379 rule->arg.trk_ctr.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8380 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8381 } else if (strcmp(args[0], "redirect") == 0) {
8382 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]8383 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8384
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]8385 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]8386 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8387 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8388 goto out_err;
8389 }
8390
8391 /* this redirect rule might already contain a parsed condition which
8392 * we'll pass to the http-request rule.
8393 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8394 rule->action = ACT_HTTP_REDIR;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8395 rule->arg.redir = redir;
8396 rule->cond = redir->cond;
8397 redir->cond = NULL;
8398 cur_arg = 2;
8399 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8400 } else if (strncmp(args[0], "add-acl", 7) == 0) {
8401 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8402 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8403 /*
8404 * '+ 8' for 'add-acl('
8405 * '- 9' for 'add-acl(' + trailing ')'
8406 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]8407 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8408
8409 cur_arg = 1;
8410
8411 if (!*args[cur_arg] ||
8412 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8413 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
8414 file, linenum, args[0]);
8415 goto out_err;
8416 }
8417
8418 LIST_INIT(&rule->arg.map.key);
8419 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]8420 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8421 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]8422 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
8423 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
8424 file, linenum, args[0], error);
8425 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8426 goto out_err;
8427 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8428 free(proxy->conf.lfs_file);
8429 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8430 proxy->conf.lfs_line = proxy->conf.args.line;
8431 cur_arg += 1;
8432 } else if (strncmp(args[0], "del-acl", 7) == 0) {
8433 /* http-request del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8434 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8435 /*
8436 * '+ 8' for 'del-acl('
8437 * '- 9' for 'del-acl(' + trailing ')'
8438 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]8439 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8440
8441 cur_arg = 1;
8442
8443 if (!*args[cur_arg] ||
8444 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8445 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
8446 file, linenum, args[0]);
8447 goto out_err;
8448 }
8449
8450 LIST_INIT(&rule->arg.map.key);
8451 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]8452 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8453 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]8454 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
8455 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
8456 file, linenum, args[0], error);
8457 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8458 goto out_err;
8459 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8460 free(proxy->conf.lfs_file);
8461 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8462 proxy->conf.lfs_line = proxy->conf.args.line;
8463 cur_arg += 1;
8464 } else if (strncmp(args[0], "del-map", 7) == 0) {
8465 /* http-request del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8466 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8467 /*
8468 * '+ 8' for 'del-map('
8469 * '- 9' for 'del-map(' + trailing ')'
8470 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]8471 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8472
8473 cur_arg = 1;
8474
8475 if (!*args[cur_arg] ||
8476 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8477 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
8478 file, linenum, args[0]);
8479 goto out_err;
8480 }
8481
8482 LIST_INIT(&rule->arg.map.key);
8483 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]8484 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8485 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]8486 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
8487 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
8488 file, linenum, args[0], error);
8489 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8490 goto out_err;
8491 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8492 free(proxy->conf.lfs_file);
8493 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8494 proxy->conf.lfs_line = proxy->conf.args.line;
8495 cur_arg += 1;
8496 } else if (strncmp(args[0], "set-map", 7) == 0) {
8497 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8498 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8499 /*
8500 * '+ 8' for 'set-map('
8501 * '- 9' for 'set-map(' + trailing ')'
8502 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]8503 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8504
8505 cur_arg = 1;
8506
8507 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8508 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
8509 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8510 file, linenum, args[0]);
8511 goto out_err;
8512 }
8513
8514 LIST_INIT(&rule->arg.map.key);
8515 LIST_INIT(&rule->arg.map.value);
8516 proxy->conf.args.ctx = ARGC_HRQ;
8517
8518 /* key pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]8519 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8520 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]8521 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
8522 Alert("parsing [%s:%d]: 'http-request %s' key: %s.\n",
8523 file, linenum, args[0], error);
8524 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8525 goto out_err;
8526 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8527
8528 /* value pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]8529 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8530 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]8531 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
8532 Alert("parsing [%s:%d]: 'http-request %s' pattern: %s.\n",
8533 file, linenum, args[0], error);
8534 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8535 goto out_err;
8536 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8537 free(proxy->conf.lfs_file);
8538 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8539 proxy->conf.lfs_line = proxy->conf.args.line;
8540
8541 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]8542 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
8543 char *errmsg = NULL;
8544 cur_arg = 1;
8545 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]8546 rule->from = ACT_F_HTTP_REQ;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]8547 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]8548 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]8549 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8550 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8551 free(errmsg);
8552 goto out_err;
8553 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8554 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]8555 action_build_list(&http_req_keywords.list, &trash);
8556 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', "
8557 "'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]8558 "'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]8559 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]8560 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8561 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8562 }
8563
8564 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8565 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8566 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8567
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8568 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8569 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8570 file, linenum, args[0], errmsg);
8571 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8572 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8573 }
8574 rule->cond = cond;
8575 }
8576 else if (*args[cur_arg]) {
8577 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8578 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8579 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8580 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8581 }
8582
8583 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8584 out_err:
8585 free(rule);
8586 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8587}
8588
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8589/* parse an "http-respose" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8590struct 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]8591{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8592 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]8593 struct action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8594 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8595 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8596
8597 rule = calloc(1, sizeof(*rule));
8598 if (!rule) {
8599 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
8600 goto out_err;
8601 }
8602
8603 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8604 rule->action = ACT_ACTION_ALLOW;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8605 cur_arg = 1;
8606 } else if (!strcmp(args[0], "deny")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8607 rule->action = ACT_ACTION_DENY;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8608 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8609 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8610 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8611 cur_arg = 1;
8612
8613 if (!*args[cur_arg] ||
8614 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8615 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
8616 file, linenum, args[0]);
8617 goto out_err;
8618 }
8619 rule->arg.nice = atoi(args[cur_arg]);
8620 if (rule->arg.nice < -1024)
8621 rule->arg.nice = -1024;
8622 else if (rule->arg.nice > 1024)
8623 rule->arg.nice = 1024;
8624 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8625 } else if (!strcmp(args[0], "set-tos")) {
8626#ifdef IP_TOS
8627 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8628 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8629 cur_arg = 1;
8630
8631 if (!*args[cur_arg] ||
8632 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8633 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8634 file, linenum, args[0]);
8635 goto out_err;
8636 }
8637
8638 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8639 if (err && *err != '\0') {
8640 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8641 file, linenum, err, args[0]);
8642 goto out_err;
8643 }
8644 cur_arg++;
8645#else
8646 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8647 goto out_err;
8648#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8649 } else if (!strcmp(args[0], "set-mark")) {
8650#ifdef SO_MARK
8651 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8652 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8653 cur_arg = 1;
8654
8655 if (!*args[cur_arg] ||
8656 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8657 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8658 file, linenum, args[0]);
8659 goto out_err;
8660 }
8661
8662 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8663 if (err && *err != '\0') {
8664 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8665 file, linenum, err, args[0]);
8666 goto out_err;
8667 }
8668 cur_arg++;
8669 global.last_checks |= LSTCHK_NETADM;
8670#else
8671 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8672 goto out_err;
8673#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8674 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8675 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8676 cur_arg = 1;
8677
8678 if (!*args[cur_arg] ||
8679 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8680 bad_log_level:
8681 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
8682 file, linenum, args[0]);
8683 goto out_err;
8684 }
8685 if (strcmp(args[cur_arg], "silent") == 0)
8686 rule->arg.loglevel = -1;
Ruoshan Huangdd016782016-06-15 22:16:03 +0800[diff] [blame]8687 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8688 goto bad_log_level;
8689 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8690 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8691 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8692 cur_arg = 1;
8693
8694 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8695 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
8696 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
8697 file, linenum, args[0]);
8698 goto out_err;
8699 }
8700
8701 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8702 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8703 LIST_INIT(&rule->arg.hdr_add.fmt);
8704
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8705 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]8706 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8707 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]8708 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
8709 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
8710 file, linenum, args[0], error);
8711 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8712 goto out_err;
8713 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8714 free(proxy->conf.lfs_file);
8715 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8716 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8717 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8718 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8719 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8720 cur_arg = 1;
8721
8722 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]8723 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
8724 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8725 file, linenum, args[0]);
8726 goto out_err;
8727 }
8728
8729 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8730 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8731 LIST_INIT(&rule->arg.hdr_add.fmt);
8732
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8733 error = NULL;
8734 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
8735 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
8736 args[cur_arg + 1], error);
8737 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8738 goto out_err;
8739 }
8740
8741 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]8742 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8743 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]8744 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
8745 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
8746 file, linenum, args[0], error);
8747 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8748 goto out_err;
8749 }
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8750
8751 free(proxy->conf.lfs_file);
8752 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8753 proxy->conf.lfs_line = proxy->conf.args.line;
8754 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8755 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8756 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8757 cur_arg = 1;
8758
8759 if (!*args[cur_arg] ||
8760 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8761 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
8762 file, linenum, args[0]);
8763 goto out_err;
8764 }
8765
8766 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8767 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8768
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8769 proxy->conf.args.ctx = ARGC_HRS;
8770 free(proxy->conf.lfs_file);
8771 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8772 proxy->conf.lfs_line = proxy->conf.args.line;
8773 cur_arg += 1;
8774 } else if (strncmp(args[0], "add-acl", 7) == 0) {
8775 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8776 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8777 /*
8778 * '+ 8' for 'add-acl('
8779 * '- 9' for 'add-acl(' + trailing ')'
8780 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]8781 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8782
8783 cur_arg = 1;
8784
8785 if (!*args[cur_arg] ||
8786 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8787 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
8788 file, linenum, args[0]);
8789 goto out_err;
8790 }
8791
8792 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8793 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]8794 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8795 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]8796 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
8797 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
8798 file, linenum, args[0], error);
8799 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8800 goto out_err;
8801 }
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8802 free(proxy->conf.lfs_file);
8803 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8804 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8805
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8806 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8807 } else if (strncmp(args[0], "del-acl", 7) == 0) {
8808 /* http-response del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8809 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8810 /*
8811 * '+ 8' for 'del-acl('
8812 * '- 9' for 'del-acl(' + trailing ')'
8813 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]8814 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8815
8816 cur_arg = 1;
8817
8818 if (!*args[cur_arg] ||
8819 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8820 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
8821 file, linenum, args[0]);
8822 goto out_err;
8823 }
8824
8825 LIST_INIT(&rule->arg.map.key);
8826 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]8827 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8828 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]8829 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
8830 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
8831 file, linenum, args[0], error);
8832 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8833 goto out_err;
8834 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8835 free(proxy->conf.lfs_file);
8836 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8837 proxy->conf.lfs_line = proxy->conf.args.line;
8838 cur_arg += 1;
8839 } else if (strncmp(args[0], "del-map", 7) == 0) {
8840 /* http-response del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8841 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8842 /*
8843 * '+ 8' for 'del-map('
8844 * '- 9' for 'del-map(' + trailing ')'
8845 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]8846 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8847
8848 cur_arg = 1;
8849
8850 if (!*args[cur_arg] ||
8851 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8852 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
8853 file, linenum, args[0]);
8854 goto out_err;
8855 }
8856
8857 LIST_INIT(&rule->arg.map.key);
8858 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]8859 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8860 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]8861 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
8862 Alert("parsing [%s:%d]: 'http-response %s' %s.\n",
8863 file, linenum, args[0], error);
8864 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8865 goto out_err;
8866 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8867 free(proxy->conf.lfs_file);
8868 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8869 proxy->conf.lfs_line = proxy->conf.args.line;
8870 cur_arg += 1;
8871 } else if (strncmp(args[0], "set-map", 7) == 0) {
8872 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8873 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8874 /*
8875 * '+ 8' for 'set-map('
8876 * '- 9' for 'set-map(' + trailing ')'
8877 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]8878 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8879
8880 cur_arg = 1;
8881
8882 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8883 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
8884 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
8885 file, linenum, args[0]);
8886 goto out_err;
8887 }
8888
8889 LIST_INIT(&rule->arg.map.key);
8890 LIST_INIT(&rule->arg.map.value);
8891
8892 proxy->conf.args.ctx = ARGC_HRS;
8893
8894 /* key pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]8895 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8896 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]8897 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
8898 Alert("parsing [%s:%d]: 'http-response %s' name: %s.\n",
8899 file, linenum, args[0], error);
8900 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8901 goto out_err;
8902 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8903
8904 /* value pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]8905 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8906 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]8907 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
8908 Alert("parsing [%s:%d]: 'http-response %s' value: %s.\n",
8909 file, linenum, args[0], error);
8910 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]8911 goto out_err;
8912 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8913
8914 free(proxy->conf.lfs_file);
8915 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8916 proxy->conf.lfs_line = proxy->conf.args.line;
8917
8918 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]8919 } else if (strcmp(args[0], "redirect") == 0) {
8920 struct redirect_rule *redir;
8921 char *errmsg = NULL;
8922
8923 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
8924 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
8925 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8926 goto out_err;
8927 }
8928
8929 /* this redirect rule might already contain a parsed condition which
8930 * we'll pass to the http-request rule.
8931 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8932 rule->action = ACT_HTTP_REDIR;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]8933 rule->arg.redir = redir;
8934 rule->cond = redir->cond;
8935 redir->cond = NULL;
8936 cur_arg = 2;
8937 return rule;
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]8938 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
8939 args[0][9] == '\0' && args[0][8] >= '0' &&
8940 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
8941 struct sample_expr *expr;
8942 unsigned int where;
8943 char *err = NULL;
8944
8945 cur_arg = 1;
8946 proxy->conf.args.ctx = ARGC_TRK;
8947
8948 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
8949 if (!expr) {
8950 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
8951 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
8952 free(err);
8953 goto out_err;
8954 }
8955
8956 where = 0;
8957 if (proxy->cap & PR_CAP_FE)
8958 where |= SMP_VAL_FE_HRS_HDR;
8959 if (proxy->cap & PR_CAP_BE)
8960 where |= SMP_VAL_BE_HRS_HDR;
8961
8962 if (!(expr->fetch->val & where)) {
8963 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule :"
8964 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
8965 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
8966 args[cur_arg-1], sample_src_names(expr->fetch->use));
8967 free(expr);
8968 goto out_err;
8969 }
8970
8971 if (strcmp(args[cur_arg], "table") == 0) {
8972 cur_arg++;
8973 if (!args[cur_arg]) {
8974 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : missing table name.\n",
8975 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
8976 free(expr);
8977 goto out_err;
8978 }
8979 /* we copy the table name for now, it will be resolved later */
8980 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
8981 cur_arg++;
8982 }
8983 rule->arg.trk_ctr.expr = expr;
8984 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]8985 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
8986 char *errmsg = NULL;
8987 cur_arg = 1;
8988 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]8989 rule->from = ACT_F_HTTP_RES;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]8990 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]8991 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]8992 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
8993 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8994 free(errmsg);
8995 goto out_err;
8996 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8997 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]8998 action_build_list(&http_res_keywords.list, &trash);
8999 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', "
9000 "'add-header', 'del-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9001 "'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]9002 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9003 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9004 goto out_err;
9005 }
9006
9007 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9008 struct acl_cond *cond;
9009 char *errmsg = NULL;
9010
9011 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9012 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9013 file, linenum, args[0], errmsg);
9014 free(errmsg);
9015 goto out_err;
9016 }
9017 rule->cond = cond;
9018 }
9019 else if (*args[cur_arg]) {
9020 Alert("parsing [%s:%d]: 'http-response %s' expects"
9021 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9022 file, linenum, args[0], args[cur_arg]);
9023 goto out_err;
9024 }
9025
9026 return rule;
9027 out_err:
9028 free(rule);
9029 return NULL;
9030}
9031
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9032/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9033 * 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]9034 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9035 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9036 */
9037struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9038 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9039{
9040 struct redirect_rule *rule;
9041 int cur_arg;
9042 int type = REDIRECT_TYPE_NONE;
9043 int code = 302;
9044 const char *destination = NULL;
9045 const char *cookie = NULL;
9046 int cookie_set = 0;
9047 unsigned int flags = REDIRECT_FLAG_NONE;
9048 struct acl_cond *cond = NULL;
9049
9050 cur_arg = 0;
9051 while (*(args[cur_arg])) {
9052 if (strcmp(args[cur_arg], "location") == 0) {
9053 if (!*args[cur_arg + 1])
9054 goto missing_arg;
9055
9056 type = REDIRECT_TYPE_LOCATION;
9057 cur_arg++;
9058 destination = args[cur_arg];
9059 }
9060 else if (strcmp(args[cur_arg], "prefix") == 0) {
9061 if (!*args[cur_arg + 1])
9062 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9063 type = REDIRECT_TYPE_PREFIX;
9064 cur_arg++;
9065 destination = args[cur_arg];
9066 }
9067 else if (strcmp(args[cur_arg], "scheme") == 0) {
9068 if (!*args[cur_arg + 1])
9069 goto missing_arg;
9070
9071 type = REDIRECT_TYPE_SCHEME;
9072 cur_arg++;
9073 destination = args[cur_arg];
9074 }
9075 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9076 if (!*args[cur_arg + 1])
9077 goto missing_arg;
9078
9079 cur_arg++;
9080 cookie = args[cur_arg];
9081 cookie_set = 1;
9082 }
9083 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9084 if (!*args[cur_arg + 1])
9085 goto missing_arg;
9086
9087 cur_arg++;
9088 cookie = args[cur_arg];
9089 cookie_set = 0;
9090 }
9091 else if (strcmp(args[cur_arg], "code") == 0) {
9092 if (!*args[cur_arg + 1])
9093 goto missing_arg;
9094
9095 cur_arg++;
9096 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9097 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9098 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9099 "'%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]9100 args[cur_arg - 1], args[cur_arg]);
9101 return NULL;
9102 }
9103 }
9104 else if (!strcmp(args[cur_arg],"drop-query")) {
9105 flags |= REDIRECT_FLAG_DROP_QS;
9106 }
9107 else if (!strcmp(args[cur_arg],"append-slash")) {
9108 flags |= REDIRECT_FLAG_APPEND_SLASH;
9109 }
9110 else if (strcmp(args[cur_arg], "if") == 0 ||
9111 strcmp(args[cur_arg], "unless") == 0) {
9112 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9113 if (!cond) {
9114 memprintf(errmsg, "error in condition: %s", *errmsg);
9115 return NULL;
9116 }
9117 break;
9118 }
9119 else {
9120 memprintf(errmsg,
9121 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9122 args[cur_arg]);
9123 return NULL;
9124 }
9125 cur_arg++;
9126 }
9127
9128 if (type == REDIRECT_TYPE_NONE) {
9129 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9130 return NULL;
9131 }
9132
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9133 if (dir && type != REDIRECT_TYPE_LOCATION) {
9134 memprintf(errmsg, "response only supports redirect type 'location'");
9135 return NULL;
9136 }
9137
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]9138 rule = calloc(1, sizeof(*rule));
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9139 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9140 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9141
9142 if (!use_fmt) {
9143 /* old-style static redirect rule */
9144 rule->rdr_str = strdup(destination);
9145 rule->rdr_len = strlen(destination);
9146 }
9147 else {
9148 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9149
9150 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9151 * if prefix == "/", we don't want to add anything, otherwise it
9152 * makes it hard for the user to configure a self-redirection.
9153 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]9154 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9155 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9156 if (!parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
9157 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]9158 : (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9159 errmsg)) {
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9160 return NULL;
9161 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9162 free(curproxy->conf.lfs_file);
9163 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9164 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9165 }
9166 }
9167
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9168 if (cookie) {
9169 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9170 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9171 */
9172 rule->cookie_len = strlen(cookie);
9173 if (cookie_set) {
9174 rule->cookie_str = malloc(rule->cookie_len + 10);
9175 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9176 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9177 rule->cookie_len += 9;
9178 } else {
9179 rule->cookie_str = malloc(rule->cookie_len + 21);
9180 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9181 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9182 rule->cookie_len += 20;
9183 }
9184 }
9185 rule->type = type;
9186 rule->code = code;
9187 rule->flags = flags;
9188 LIST_INIT(&rule->list);
9189 return rule;
9190
9191 missing_arg:
9192 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9193 return NULL;
9194}
9195
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9196/************************************************************************/
9197/* The code below is dedicated to ACL parsing and matching */
9198/************************************************************************/
9199
9200
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9201/* This function ensures that the prerequisites for an L7 fetch are ready,
9202 * which means that a request or response is ready. If some data is missing,
9203 * 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]9204 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9205 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9206 *
9207 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9208 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9209 * decide whether or not an HTTP message is present ;
9210 * 0 if the requested data cannot be fetched or if it is certain that
9211 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9212 * 1 if an HTTP message is ready
9213 */
James Rosewell91a41cb2015-09-18 17:11:16 +0100[diff] [blame]9214int smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9215 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9216{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9217 struct http_txn *txn;
9218 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9219
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9220 /* Note: it is possible that <s> is NULL when called before stream
9221 * initialization (eg: tcp-request connection), so this function is the
9222 * one responsible for guarding against this case for all HTTP users.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9223 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9224 if (!s)
9225 return 0;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9226
Thierry FOURNIERed08d6a2015-09-24 08:40:18 +0200[diff] [blame]9227 if (!s->txn) {
9228 if (unlikely(!http_alloc_txn(s)))
9229 return 0; /* not enough memory */
9230 http_init_txn(s);
9231 }
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9232 txn = s->txn;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9233 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9234
9235 /* Check for a dependency on a request */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9236 smp->data.type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9237
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9238 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9239 /* If the buffer does not leave enough free space at the end,
9240 * we must first realign it.
9241 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9242 if (s->req.buf->p > s->req.buf->data &&
9243 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
9244 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9245
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9246 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9247 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9248 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9249
9250 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9251 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9252 http_msg_analyzer(msg, &txn->hdr_idx);
9253
9254 /* Still no valid request ? */
9255 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9256 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9257 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9258 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9259 }
9260 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9261 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9262 return 0;
9263 }
9264
9265 /* OK we just got a valid HTTP request. We have some minor
9266 * preparation to perform so that further checks can rely
9267 * on HTTP tests.
9268 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9269
9270 /* If the request was parsed but was too large, we must absolutely
9271 * return an error so that it is not processed. At the moment this
9272 * cannot happen, but if the parsers are to change in the future,
9273 * we want this check to be maintained.
9274 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9275 if (unlikely(s->req.buf->i + s->req.buf->p >
9276 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]9277 msg->err_state = msg->msg_state;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9278 msg->msg_state = HTTP_MSG_ERROR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9279 smp->data.u.sint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9280 return 1;
9281 }
9282
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9283 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9284 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9285 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9286
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9287 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9288 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9289 }
9290
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9291 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9292 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9293 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9294
9295 /* otherwise everything's ready for the request */
9296 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9297 else {
9298 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9299 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9300 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9301 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9302 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9303 }
9304
9305 /* everything's OK */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9306 smp->data.u.sint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9307 return 1;
9308}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9309
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9310/* 1. Check on METHOD
9311 * We use the pre-parsed method if it is known, and store its number as an
9312 * integer. If it is unknown, we use the pointer and the length.
9313 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9314static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9315{
9316 int len, meth;
9317
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9318 len = strlen(text);
9319 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9320
9321 pattern->val.i = meth;
9322 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]9323 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9324 pattern->len = len;
9325 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9326 else {
9327 pattern->ptr.str = NULL;
9328 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9329 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9330 return 1;
9331}
9332
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9333/* This function fetches the method of current HTTP request and stores
9334 * it in the global pattern struct as a chunk. There are two possibilities :
9335 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9336 * in <len> and <ptr> is NULL ;
9337 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9338 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9339 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9340 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9341static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9342smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9343{
9344 int meth;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9345 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9346
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9347 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9348
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9349 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9350 meth = txn->meth;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9351 smp->data.type = SMP_T_METH;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9352 smp->data.u.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9353 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9354 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
9355 /* ensure the indexes are not affected */
9356 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9357 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9358 smp->data.u.meth.str.len = txn->req.sl.rq.m_l;
9359 smp->data.u.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9360 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9361 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9362 return 1;
9363}
9364
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9365/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9366static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9367{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9368 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9369 struct pattern_list *lst;
9370 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9371
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9372 list_for_each_entry(lst, &expr->patterns, list) {
9373 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9374
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9375 /* well-known method */
9376 if (pattern->val.i != HTTP_METH_OTHER) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9377 if (smp->data.u.meth.meth == pattern->val.i)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9378 return pattern;
9379 else
9380 continue;
9381 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9382
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9383 /* Other method, we must compare the strings */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9384 if (pattern->len != smp->data.u.meth.str.len)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9385 continue;
9386
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9387 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9388 if ((icase && strncasecmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0) ||
9389 (!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]9390 return pattern;
9391 }
9392 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9393}
9394
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9395static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9396smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9397{
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9398 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9399 char *ptr;
9400 int len;
9401
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9402 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9403
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9404 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9405 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9406 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9407
9408 while ((len-- > 0) && (*ptr++ != '/'));
9409 if (len <= 0)
9410 return 0;
9411
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9412 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9413 smp->data.u.str.str = ptr;
9414 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9415
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9416 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9417 return 1;
9418}
9419
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9420static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9421smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9422{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9423 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9424 char *ptr;
9425 int len;
9426
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9427 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9428
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]9429 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9430 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9431 return 0;
9432
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9433 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9434 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9435
9436 while ((len-- > 0) && (*ptr++ != '/'));
9437 if (len <= 0)
9438 return 0;
9439
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9440 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9441 smp->data.u.str.str = ptr;
9442 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9443
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9444 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9445 return 1;
9446}
9447
9448/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9449static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9450smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9451{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9452 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9453 char *ptr;
9454 int len;
9455
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9456 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9457
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]9458 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9459 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9460 return 0;
9461
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9462 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9463 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9464
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9465 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9466 smp->data.u.sint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9467 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9468 return 1;
9469}
9470
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]9471static int
9472smp_fetch_uniqueid(const struct arg *args, struct sample *smp, const char *kw, void *private)
9473{
9474 if (LIST_ISEMPTY(&smp->sess->fe->format_unique_id))
9475 return 0;
9476
9477 if (!smp->strm->unique_id) {
9478 if ((smp->strm->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
9479 return 0;
9480 smp->strm->unique_id[0] = '\0';
9481 }
9482 smp->data.u.str.len = build_logline(smp->strm, smp->strm->unique_id,
9483 UNIQUEID_LEN, &smp->sess->fe->format_unique_id);
9484
9485 smp->data.type = SMP_T_STR;
9486 smp->data.u.str.str = smp->strm->unique_id;
9487 smp->flags = SMP_F_CONST;
9488 return 1;
9489}
9490
Thierry FOURNIERd7d88812017-04-19 15:15:14 +0200[diff] [blame]9491/* Returns a string block containing all headers including the
9492 * empty line wich separes headers from the body. This is useful
9493 * form some headers analysis.
9494 */
9495static int
9496smp_fetch_hdrs(const struct arg *args, struct sample *smp, const char *kw, void *private)
9497{
9498 struct http_msg *msg;
9499 struct hdr_idx *idx;
9500 struct http_txn *txn;
9501
9502 CHECK_HTTP_MESSAGE_FIRST();
9503
9504 txn = smp->strm->txn;
9505 idx = &txn->hdr_idx;
9506 msg = &txn->req;
9507
9508 smp->data.type = SMP_T_STR;
9509 smp->data.u.str.str = msg->chn->buf->p + hdr_idx_first_pos(idx);
9510 smp->data.u.str.len = msg->eoh - hdr_idx_first_pos(idx) + 1 +
9511 (msg->chn->buf->p[msg->eoh] == '\r');
9512
9513 return 1;
9514}
9515
Thierry FOURNIER5617dce2017-04-09 05:38:19 +0200[diff] [blame]9516/* Returns the header request in a length/value encoded format.
9517 * This is useful for exchanges with the SPOE.
9518 *
9519 * A "length value" is a multibyte code encoding numbers. It uses the
9520 * SPOE format. The encoding is the following:
9521 *
9522 * Each couple "header name" / "header value" is composed
9523 * like this:
9524 * "length value" "header name bytes"
9525 * "length value" "header value bytes"
9526 * When the last header is reached, the header name and the header
9527 * value are empty. Their length are 0
9528 */
9529static int
9530smp_fetch_hdrs_bin(const struct arg *args, struct sample *smp, const char *kw, void *private)
9531{
9532 struct http_msg *msg;
9533 struct chunk *temp;
9534 struct hdr_idx *idx;
9535 const char *cur_ptr, *cur_next, *p;
9536 int old_idx, cur_idx;
9537 struct hdr_idx_elem *cur_hdr;
9538 const char *hn, *hv;
9539 int hnl, hvl;
9540 int ret;
9541 struct http_txn *txn;
9542 char *buf;
9543 char *end;
9544
9545 CHECK_HTTP_MESSAGE_FIRST();
9546
9547 temp = get_trash_chunk();
9548 buf = temp->str;
9549 end = temp->str + temp->size;
9550
9551 txn = smp->strm->txn;
9552 idx = &txn->hdr_idx;
9553 msg = &txn->req;
9554
9555 /* Build array of headers. */
9556 old_idx = 0;
9557 cur_next = msg->chn->buf->p + hdr_idx_first_pos(idx);
9558 while (1) {
9559 cur_idx = idx->v[old_idx].next;
9560 if (!cur_idx)
9561 break;
9562 old_idx = cur_idx;
9563
9564 cur_hdr = &idx->v[cur_idx];
9565 cur_ptr = cur_next;
9566 cur_next = cur_ptr + cur_hdr->len + cur_hdr->cr + 1;
9567
9568 /* Now we have one full header at cur_ptr of len cur_hdr->len,
9569 * and the next header starts at cur_next. We'll check
9570 * this header in the list as well as against the default
9571 * rule.
9572 */
9573
9574 /* look for ': *'. */
9575 hn = cur_ptr;
9576 for (p = cur_ptr; p < cur_ptr + cur_hdr->len && *p != ':'; p++);
9577 if (p >= cur_ptr+cur_hdr->len)
9578 continue;
9579 hnl = p - hn;
9580 p++;
9581 while (p < cur_ptr + cur_hdr->len && (*p == ' ' || *p == '\t'))
9582 p++;
9583 if (p >= cur_ptr + cur_hdr->len)
9584 continue;
9585 hv = p;
9586 hvl = cur_ptr + cur_hdr->len-p;
9587
9588 /* encode the header name. */
9589 ret = encode_varint(hnl, &buf, end);
9590 if (ret == -1)
9591 return 0;
9592 if (buf + hnl > end)
9593 return 0;
9594 memcpy(buf, hn, hnl);
9595 buf += hnl;
9596
9597 /* encode and copy the value. */
9598 ret = encode_varint(hvl, &buf, end);
9599 if (ret == -1)
9600 return 0;
9601 if (buf + hvl > end)
9602 return 0;
9603 memcpy(buf, hv, hvl);
9604 buf += hvl;
9605 }
9606
9607 /* encode the end of the header list with empty
9608 * header name and header value.
9609 */
9610 ret = encode_varint(0, &buf, end);
9611 if (ret == -1)
9612 return 0;
9613 ret = encode_varint(0, &buf, end);
9614 if (ret == -1)
9615 return 0;
9616
9617 /* Initialise sample data which will be filled. */
9618 smp->data.type = SMP_T_BIN;
9619 smp->data.u.str.str = temp->str;
9620 smp->data.u.str.len = buf - temp->str;
9621 smp->data.u.str.size = temp->size;
9622
9623 return 1;
9624}
9625
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9626/* returns the longest available part of the body. This requires that the body
9627 * has been waited for using http-buffer-request.
9628 */
9629static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9630smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9631{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9632 struct http_msg *msg;
9633 unsigned long len;
9634 unsigned long block1;
9635 char *body;
9636 struct chunk *temp;
9637
9638 CHECK_HTTP_MESSAGE_FIRST();
9639
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9640 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9641 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9642 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9643 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9644
9645 len = http_body_bytes(msg);
9646 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
9647
9648 block1 = len;
9649 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
9650 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
9651
9652 if (block1 == len) {
9653 /* buffer is not wrapped (or empty) */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9654 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9655 smp->data.u.str.str = body;
9656 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9657 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
9658 }
9659 else {
9660 /* buffer is wrapped, we need to defragment it */
9661 temp = get_trash_chunk();
9662 memcpy(temp->str, body, block1);
9663 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9664 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9665 smp->data.u.str.str = temp->str;
9666 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9667 smp->flags = SMP_F_VOL_TEST;
9668 }
9669 return 1;
9670}
9671
9672
9673/* returns the available length of the body. This requires that the body
9674 * has been waited for using http-buffer-request.
9675 */
9676static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9677smp_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]9678{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9679 struct http_msg *msg;
9680
9681 CHECK_HTTP_MESSAGE_FIRST();
9682
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9683 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9684 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9685 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9686 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9687
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9688 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9689 smp->data.u.sint = http_body_bytes(msg);
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9690
9691 smp->flags = SMP_F_VOL_TEST;
9692 return 1;
9693}
9694
9695
9696/* returns the advertised length of the body, or the advertised size of the
9697 * chunks available in the buffer. This requires that the body has been waited
9698 * for using http-buffer-request.
9699 */
9700static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9701smp_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]9702{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9703 struct http_msg *msg;
9704
9705 CHECK_HTTP_MESSAGE_FIRST();
9706
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9707 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9708 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9709 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9710 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9711
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9712 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9713 smp->data.u.sint = msg->body_len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]9714
9715 smp->flags = SMP_F_VOL_TEST;
9716 return 1;
9717}
9718
9719
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9720/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9721static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9722smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9723{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9724 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9725
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9726 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9727
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]9728 txn = smp->strm->txn;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9729 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9730 smp->data.u.str.len = txn->req.sl.rq.u_l;
9731 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]9732 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9733 return 1;
9734}
9735
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9736static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9737smp_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]9738{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9739 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9740 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9741
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9742 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9743
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]9744 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]9745 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]9746 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]9747 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9748
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9749 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9750 smp->data.u.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9751 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9752 return 1;
9753}
9754
9755static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9756smp_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]9757{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9758 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9759 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9760
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9761 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9762
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]9763 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]9764 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]9765 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
9766 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9767
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9768 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9769 smp->data.u.sint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]9770 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9771 return 1;
9772}
9773
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9774/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9775 * Accepts an optional argument of type string containing the header field name,
9776 * and an optional argument of type signed or unsigned integer to request an
9777 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9778 * headers are considered from the first one. It does not stop on commas and
9779 * returns full lines instead (useful for User-Agent or Date for example).
9780 */
9781static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9782smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9783{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9784 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9785 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9786 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9787 int occ = 0;
9788 const char *name_str = NULL;
9789 int name_len = 0;
9790
9791 if (!ctx) {
9792 /* first call */
9793 ctx = &static_hdr_ctx;
9794 ctx->idx = 0;
9795 smp->ctx.a[0] = ctx;
9796 }
9797
9798 if (args) {
9799 if (args[0].type != ARGT_STR)
9800 return 0;
9801 name_str = args[0].data.str.str;
9802 name_len = args[0].data.str.len;
9803
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]9804 if (args[1].type == ARGT_SINT)
9805 occ = args[1].data.sint;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9806 }
9807
9808 CHECK_HTTP_MESSAGE_FIRST();
9809
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]9810 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9811 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]9812
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9813 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
9814 /* search for header from the beginning */
9815 ctx->idx = 0;
9816
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9817 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9818 /* no explicit occurrence and single fetch => last header by default */
9819 occ = -1;
9820
9821 if (!occ)
9822 /* prepare to report multiple occurrences for ACL fetches */
9823 smp->flags |= SMP_F_NOT_LAST;
9824
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9825 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9826 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9827 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]9828 return 1;
9829
9830 smp->flags &= ~SMP_F_NOT_LAST;
9831 return 0;
9832}
9833
9834/* 6. Check on HTTP header count. The number of occurrences is returned.
9835 * Accepts exactly 1 argument of type string. It does not stop on commas and
9836 * returns full lines instead (useful for User-Agent or Date for example).
9837 */
9838static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9839smp_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]9840{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9841 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9842 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9843 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9844 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]9845 const char *name = NULL;
9846 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9847
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]9848 if (args && args->type == ARGT_STR) {
9849 name = args->data.str.str;
9850 len = args->data.str.len;
9851 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9852
9853 CHECK_HTTP_MESSAGE_FIRST();
9854
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]9855 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9856 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]9857
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9858 ctx.idx = 0;
9859 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]9860 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9861 cnt++;
9862
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9863 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9864 smp->data.u.sint = cnt;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9865 smp->flags = SMP_F_VOL_HDR;
9866 return 1;
9867}
9868
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]9869static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9870smp_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]9871{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9872 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]9873 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9874 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]9875 struct chunk *temp;
9876 char del = ',';
9877
9878 if (args && args->type == ARGT_STR)
9879 del = *args[0].data.str.str;
9880
9881 CHECK_HTTP_MESSAGE_FIRST();
9882
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]9883 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9884 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]9885
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]9886 temp = get_trash_chunk();
9887
9888 ctx.idx = 0;
9889 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
9890 if (temp->len)
9891 temp->str[temp->len++] = del;
9892 memcpy(temp->str + temp->len, ctx.line, ctx.del);
9893 temp->len += ctx.del;
9894 }
9895
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9896 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9897 smp->data.u.str.str = temp->str;
9898 smp->data.u.str.len = temp->len;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]9899 smp->flags = SMP_F_VOL_HDR;
9900 return 1;
9901}
9902
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9903/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9904 * Accepts an optional argument of type string containing the header field name,
9905 * and an optional argument of type signed or unsigned integer to request an
9906 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9907 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9908 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9909static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9910smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9911{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9912 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9913 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9914 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9915 int occ = 0;
9916 const char *name_str = NULL;
9917 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9918
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9919 if (!ctx) {
9920 /* first call */
9921 ctx = &static_hdr_ctx;
9922 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]9923 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9924 }
9925
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9926 if (args) {
9927 if (args[0].type != ARGT_STR)
9928 return 0;
9929 name_str = args[0].data.str.str;
9930 name_len = args[0].data.str.len;
9931
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]9932 if (args[1].type == ARGT_SINT)
9933 occ = args[1].data.sint;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9934 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9935
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9936 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9937
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]9938 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9939 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]9940
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9941 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9942 /* search for header from the beginning */
9943 ctx->idx = 0;
9944
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9945 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9946 /* no explicit occurrence and single fetch => last header by default */
9947 occ = -1;
9948
9949 if (!occ)
9950 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9951 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]9952
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9953 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9954 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9955 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]9956 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9957
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9958 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9959 return 0;
9960}
9961
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9962/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9963 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9964 */
9965static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9966smp_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]9967{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9968 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9969 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9970 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9971 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]9972 const char *name = NULL;
9973 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9974
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]9975 if (args && args->type == ARGT_STR) {
9976 name = args->data.str.str;
9977 len = args->data.str.len;
9978 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9979
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9980 CHECK_HTTP_MESSAGE_FIRST();
9981
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]9982 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9983 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]9984
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9985 ctx.idx = 0;
9986 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]9987 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9988 cnt++;
9989
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9990 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9991 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9992 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9993 return 1;
9994}
9995
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9996/* Fetch an HTTP header's integer value. The integer value is returned. It
9997 * takes a mandatory argument of type string and an optional one of type int
9998 * to designate a specific occurrence. It returns an unsigned integer, which
9999 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10000 */
10001static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10002smp_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]10003{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10004 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10005
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10006 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10007 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10008 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]10009 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10010
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10011 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10012}
10013
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10014/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10015 * and an optional one of type int to designate a specific occurrence.
10016 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10017 */
10018static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10019smp_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]10020{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10021 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10022
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10023 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10024 if (url2ipv4((char *)smp->data.u.str.str, &smp->data.u.ipv4)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10025 smp->data.type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10026 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10027 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10028 struct chunk *temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10029 if (smp->data.u.str.len < temp->size - 1) {
10030 memcpy(temp->str, smp->data.u.str.str, smp->data.u.str.len);
10031 temp->str[smp->data.u.str.len] = '\0';
10032 if (inet_pton(AF_INET6, temp->str, &smp->data.u.ipv6)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10033 smp->data.type = SMP_T_IPV6;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10034 break;
10035 }
10036 }
10037 }
10038
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10039 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10040 if (!(smp->flags & SMP_F_NOT_LAST))
10041 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10042 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10043 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10044}
10045
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10046/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10047 * the first '/' after the possible hostname, and ends before the possible '?'.
10048 */
10049static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10050smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10051{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10052 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10053 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10054
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10055 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10056
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10057 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10058 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]10059 ptr = http_get_path(txn);
10060 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10061 return 0;
10062
10063 /* OK, we got the '/' ! */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10064 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10065 smp->data.u.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10066
10067 while (ptr < end && *ptr != '?')
10068 ptr++;
10069
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10070 smp->data.u.str.len = ptr - smp->data.u.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10071 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10072 return 1;
10073}
10074
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10075/* This produces a concatenation of the first occurrence of the Host header
10076 * followed by the path component if it begins with a slash ('/'). This means
10077 * that '*' will not be added, resulting in exactly the first Host entry.
10078 * If no Host header is found, then the path is returned as-is. The returned
10079 * 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]10080 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10081 */
10082static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10083smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10084{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10085 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10086 char *ptr, *end, *beg;
10087 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10088 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10089
10090 CHECK_HTTP_MESSAGE_FIRST();
10091
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10092 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10093 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10094 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]10095 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10096
10097 /* 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]10098 temp = get_trash_chunk();
10099 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10100 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10101 smp->data.u.str.str = temp->str;
10102 smp->data.u.str.len = ctx.vlen;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10103
10104 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10105 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]10106 beg = http_get_path(txn);
10107 if (!beg)
10108 beg = end;
10109
10110 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10111
10112 if (beg < ptr && *beg == '/') {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10113 memcpy(smp->data.u.str.str + smp->data.u.str.len, beg, ptr - beg);
10114 smp->data.u.str.len += ptr - beg;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10115 }
10116
10117 smp->flags = SMP_F_VOL_1ST;
10118 return 1;
10119}
10120
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10121/* This produces a 32-bit hash of the concatenation of the first occurrence of
10122 * the Host header followed by the path component if it begins with a slash ('/').
10123 * This means that '*' will not be added, resulting in exactly the first Host
10124 * 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]10125 * is hashed using the path hash followed by a full avalanche hash and provides a
10126 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10127 * high-traffic sites without having to store whole paths.
10128 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10129int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10130smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10131{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10132 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10133 struct hdr_ctx ctx;
10134 unsigned int hash = 0;
10135 char *ptr, *beg, *end;
10136 int len;
10137
10138 CHECK_HTTP_MESSAGE_FIRST();
10139
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10140 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10141 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10142 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]10143 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10144 ptr = ctx.line + ctx.val;
10145 len = ctx.vlen;
10146 while (len--)
10147 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10148 }
10149
10150 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10151 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]10152 beg = http_get_path(txn);
10153 if (!beg)
10154 beg = end;
10155
10156 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10157
10158 if (beg < ptr && *beg == '/') {
10159 while (beg < ptr)
10160 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10161 }
10162 hash = full_hash(hash);
10163
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10164 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10165 smp->data.u.sint = hash;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10166 smp->flags = SMP_F_VOL_1ST;
10167 return 1;
10168}
10169
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10170/* 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]10171 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10172 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10173 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10174 * that in environments where IPv6 is insignificant, truncating the output to
10175 * 8 bytes would still work.
10176 */
10177static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10178smp_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]10179{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10180 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10181 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10182
10183 if (!cli_conn)
10184 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10185
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10186 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10187 return 0;
10188
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10189 temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10190 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10191 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10192
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10193 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10194 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10195 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]10196 temp->len += 4;
10197 break;
10198 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10199 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]10200 temp->len += 16;
10201 break;
10202 default:
10203 return 0;
10204 }
10205
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10206 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10207 smp->data.type = SMP_T_BIN;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10208 return 1;
10209}
10210
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10211/* Extracts the query string, which comes after the question mark '?'. If no
10212 * question mark is found, nothing is returned. Otherwise it returns a sample
10213 * of type string carrying the whole query string.
10214 */
10215static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10216smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10217{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10218 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10219 char *ptr, *end;
10220
10221 CHECK_HTTP_MESSAGE_FIRST();
10222
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10223 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10224 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
10225 end = ptr + txn->req.sl.rq.u_l;
10226
10227 /* look up the '?' */
10228 do {
10229 if (ptr == end)
10230 return 0;
10231 } while (*ptr++ != '?');
10232
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10233 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10234 smp->data.u.str.str = ptr;
10235 smp->data.u.str.len = end - ptr;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10236 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
10237 return 1;
10238}
10239
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10240static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10241smp_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]10242{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10243 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10244 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10245 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10246
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10247 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10248
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10249 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10250 smp->data.u.sint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10251 return 1;
10252}
10253
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10254/* return a valid test if the current request is the first one on the connection */
10255static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10256smp_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]10257{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10258 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10259 smp->data.u.sint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10260 return 1;
10261}
10262
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10263/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10264static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10265smp_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]10266{
10267
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10268 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10269 return 0;
10270
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10271 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10272
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10273 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10274 return 0;
10275
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10276 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10277 smp->data.u.sint = check_user(args->data.usr, smp->strm->txn->auth.user,
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10278 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10279 return 1;
10280}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10281
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10282/* Accepts exactly 1 argument of type userlist */
10283static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10284smp_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]10285{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10286 if (!args || args->type != ARGT_USR)
10287 return 0;
10288
10289 CHECK_HTTP_MESSAGE_FIRST();
10290
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10291 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10292 return 0;
10293
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10294 /* if the user does not belong to the userlist or has a wrong password,
10295 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10296 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10297 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10298 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
10299 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10300 return 0;
10301
10302 /* pat_match_auth() will need the user list */
10303 smp->ctx.a[0] = args->data.usr;
10304
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10305 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10306 smp->flags = SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10307 smp->data.u.str.str = smp->strm->txn->auth.user;
10308 smp->data.u.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10309
10310 return 1;
10311}
10312
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10313/* Try to find the next occurrence of a cookie name in a cookie header value.
10314 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10315 * the cookie value is returned into *value and *value_l, and the function
10316 * returns a pointer to the next pointer to search from if the value was found.
10317 * Otherwise if the cookie was not found, NULL is returned and neither value
10318 * nor value_l are touched. The input <hdr> string should first point to the
10319 * header's value, and the <hdr_end> pointer must point to the first character
10320 * not part of the value. <list> must be non-zero if value may represent a list
10321 * of values (cookie headers). This makes it faster to abort parsing when no
10322 * list is expected.
10323 */
David Carlier4686f792015-09-25 14:10:50 +0100[diff] [blame]10324char *
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10325extract_cookie_value(char *hdr, const char *hdr_end,
10326 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10327 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10328{
10329 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10330 char *next;
10331
10332 /* we search at least a cookie name followed by an equal, and more
10333 * generally something like this :
10334 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10335 */
10336 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10337 /* Iterate through all cookies on this line */
10338
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]10339 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10340 att_beg++;
10341
10342 /* find att_end : this is the first character after the last non
10343 * space before the equal. It may be equal to hdr_end.
10344 */
10345 equal = att_end = att_beg;
10346
10347 while (equal < hdr_end) {
10348 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10349 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]10350 if (HTTP_IS_SPHT(*equal++))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10351 continue;
10352 att_end = equal;
10353 }
10354
10355 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10356 * is between <att_beg> and <equal>, both may be identical.
10357 */
10358
10359 /* look for end of cookie if there is an equal sign */
10360 if (equal < hdr_end && *equal == '=') {
10361 /* look for the beginning of the value */
10362 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]10363 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10364 val_beg++;
10365
10366 /* find the end of the value, respecting quotes */
10367 next = find_cookie_value_end(val_beg, hdr_end);
10368
10369 /* make val_end point to the first white space or delimitor after the value */
10370 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]10371 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10372 val_end--;
10373 } else {
10374 val_beg = val_end = next = equal;
10375 }
10376
10377 /* We have nothing to do with attributes beginning with '$'. However,
10378 * they will automatically be removed if a header before them is removed,
10379 * since they're supposed to be linked together.
10380 */
10381 if (*att_beg == '$')
10382 continue;
10383
10384 /* Ignore cookies with no equal sign */
10385 if (equal == next)
10386 continue;
10387
10388 /* Now we have the cookie name between att_beg and att_end, and
10389 * its value between val_beg and val_end.
10390 */
10391
10392 if (att_end - att_beg == cookie_name_l &&
10393 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10394 /* let's return this value and indicate where to go on from */
10395 *value = val_beg;
10396 *value_l = val_end - val_beg;
10397 return next + 1;
10398 }
10399
10400 /* Set-Cookie headers only have the name in the first attr=value part */
10401 if (!list)
10402 break;
10403 }
10404
10405 return NULL;
10406}
10407
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10408/* Fetch a captured HTTP request header. The index is the position of
10409 * the "capture" option in the configuration file
10410 */
10411static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10412smp_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]10413{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10414 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10415 int idx;
10416
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10417 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10418 return 0;
10419
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10420 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10421
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10422 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]10423 return 0;
10424
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10425 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10426 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10427 smp->data.u.str.str = smp->strm->req_cap[idx];
10428 smp->data.u.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10429
10430 return 1;
10431}
10432
10433/* Fetch a captured HTTP response header. The index is the position of
10434 * the "capture" option in the configuration file
10435 */
10436static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10437smp_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]10438{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10439 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10440 int idx;
10441
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10442 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10443 return 0;
10444
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10445 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10446
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10447 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]10448 return 0;
10449
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10450 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10451 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10452 smp->data.u.str.str = smp->strm->res_cap[idx];
10453 smp->data.u.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10454
10455 return 1;
10456}
10457
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10458/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
10459static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10460smp_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]10461{
10462 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10463 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10464 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10465
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10466 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10467 return 0;
10468
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10469 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10470
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10471 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10472 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10473
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10474 temp = get_trash_chunk();
10475 temp->str = txn->uri;
10476 temp->len = ptr - txn->uri;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10477 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10478 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10479 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10480
10481 return 1;
10482
10483}
10484
10485/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
10486static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10487smp_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]10488{
10489 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10490 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10491 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10492
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10493 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10494 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10495
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10496 ptr = txn->uri;
10497
10498 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10499 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10500
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10501 if (!*ptr)
10502 return 0;
10503
10504 ptr++; /* skip the space */
10505
10506 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10507 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10508 if (!ptr)
10509 return 0;
10510 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
10511 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10512
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10513 smp->data.u.str = *temp;
10514 smp->data.u.str.len = ptr - temp->str;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10515 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10516 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10517
10518 return 1;
10519}
10520
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10521/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
10522 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10523 */
10524static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10525smp_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]10526{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10527 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10528
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10529 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10530 return 0;
10531
10532 if (txn->req.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10533 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10534 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10535 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10536
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10537 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10538 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10539 smp->flags = SMP_F_CONST;
10540 return 1;
10541
10542}
10543
10544/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
10545 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10546 */
10547static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10548smp_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]10549{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10550 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10551
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10552 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10553 return 0;
10554
10555 if (txn->rsp.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10556 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10557 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10558 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10559
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10560 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10561 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10562 smp->flags = SMP_F_CONST;
10563 return 1;
10564
10565}
10566
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10567
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10568/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10569 * 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]10570 * 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]10571 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10572 * 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]10573 * Accepts exactly 1 argument of type string. If the input options indicate
10574 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10575 * The returned sample is of type CSTR. Can be used to parse cookies in other
10576 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10577 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10578int 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]10579{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10580 struct http_txn *txn;
10581 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10582 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10583 const struct http_msg *msg;
10584 const char *hdr_name;
10585 int hdr_name_len;
10586 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10587 int occ = 0;
10588 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10589
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10590 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10591 return 0;
10592
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10593 if (!ctx) {
10594 /* first call */
10595 ctx = &static_hdr_ctx;
10596 ctx->idx = 0;
10597 smp->ctx.a[2] = ctx;
10598 }
10599
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10600 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10601
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10602 txn = smp->strm->txn;
10603 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10604
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10605 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10606 msg = &txn->req;
10607 hdr_name = "Cookie";
10608 hdr_name_len = 6;
10609 } else {
10610 msg = &txn->rsp;
10611 hdr_name = "Set-Cookie";
10612 hdr_name_len = 10;
10613 }
10614
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10615 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10616 /* no explicit occurrence and single fetch => last cookie by default */
10617 occ = -1;
10618
10619 /* OK so basically here, either we want only one value and it's the
10620 * last one, or we want to iterate over all of them and we fetch the
10621 * next one.
10622 */
10623
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10624 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10625 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10626 /* search for the header from the beginning, we must first initialize
10627 * the search parameters.
10628 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10629 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10630 ctx->idx = 0;
10631 }
10632
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10633 smp->flags |= SMP_F_VOL_HDR;
10634
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10635 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10636 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
10637 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10638 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
10639 goto out;
10640
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10641 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10642 continue;
10643
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10644 smp->ctx.a[0] = ctx->line + ctx->val;
10645 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10646 }
10647
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10648 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10649 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10650 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]10651 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10652 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10653 &smp->data.u.str.str,
10654 &smp->data.u.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10655 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10656 found = 1;
10657 if (occ >= 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10658 /* one value was returned into smp->data.u.str.{str,len} */
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10659 smp->flags |= SMP_F_NOT_LAST;
10660 return 1;
10661 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10662 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10663 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10664 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10665 /* all cookie headers and values were scanned. If we're looking for the
10666 * last occurrence, we may return it now.
10667 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10668 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10669 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10670 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10671}
10672
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10673/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10674 * 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]10675 * multiple cookies may be parsed on the same line. The returned sample is of
10676 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10677 */
10678static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10679smp_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]10680{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10681 struct http_txn *txn;
10682 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10683 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10684 const struct http_msg *msg;
10685 const char *hdr_name;
10686 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10687 int cnt;
10688 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10689 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10690
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10691 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10692 return 0;
10693
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10694 CHECK_HTTP_MESSAGE_FIRST();
10695
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10696 txn = smp->strm->txn;
10697 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10698
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10699 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10700 msg = &txn->req;
10701 hdr_name = "Cookie";
10702 hdr_name_len = 6;
10703 } else {
10704 msg = &txn->rsp;
10705 hdr_name = "Set-Cookie";
10706 hdr_name_len = 10;
10707 }
10708
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10709 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]10710 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10711 ctx.idx = 0;
10712 cnt = 0;
10713
10714 while (1) {
10715 /* Note: val_beg == NULL every time we need to fetch a new header */
10716 if (!val_beg) {
10717 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
10718 break;
10719
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10720 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10721 continue;
10722
10723 val_beg = ctx.line + ctx.val;
10724 val_end = val_beg + ctx.vlen;
10725 }
10726
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10727 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10728 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10729 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10730 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10731 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10732 &smp->data.u.str.str,
10733 &smp->data.u.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10734 cnt++;
10735 }
10736 }
10737
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10738 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10739 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10740 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10741 return 1;
10742}
10743
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10744/* Fetch an cookie's integer value. The integer value is returned. It
10745 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
10746 */
10747static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10748smp_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]10749{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10750 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10751
10752 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10753 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10754 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]10755 }
10756
10757 return ret;
10758}
10759
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10760/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10761/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10762/************************************************************************/
10763
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10764/*
10765 * Given a path string and its length, find the position of beginning of the
10766 * query string. Returns NULL if no query string is found in the path.
10767 *
10768 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
10769 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]10770 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10771 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10772static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10773{
10774 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]10775
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10776 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10777 return p ? p + 1 : NULL;
10778}
10779
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10780static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10781{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10782 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10783}
10784
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10785/* after increasing a pointer value, it can exceed the first buffer
10786 * size. This function transform the value of <ptr> according with
10787 * the expected position. <chunks> is an array of the one or two
10788 * avalaible chunks. The first value is the start of the first chunk,
10789 * the second value if the end+1 of the first chunks. The third value
10790 * is NULL or the start of the second chunk and the fourth value is
10791 * the end+1 of the second chunk. The function returns 1 if does a
10792 * wrap, else returns 0.
10793 */
10794static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
10795{
10796 if (*ptr < chunks[1])
10797 return 0;
10798 if (!chunks[2])
10799 return 0;
10800 *ptr = chunks[2] + ( *ptr - chunks[1] );
10801 return 1;
10802}
10803
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10804/*
10805 * Given a url parameter, find the starting position of the first occurence,
10806 * or NULL if the parameter is not found.
10807 *
10808 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
10809 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10810 *
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]10811 * Warning: this function returns a pointer that can point to the first chunk
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10812 * or the second chunk. The caller must be check the position before using the
10813 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10814 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10815static const char *
10816find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]10817 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10818 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10819{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10820 const char *pos, *last, *equal;
10821 const char **bufs = chunks;
10822 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10823
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10824
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10825 pos = bufs[0];
10826 last = bufs[1];
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]10827 while (pos < last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10828 /* Check the equal. */
10829 equal = pos + url_param_name_l;
10830 if (fix_pointer_if_wrap(chunks, &equal)) {
10831 if (equal >= chunks[3])
10832 return NULL;
10833 } else {
10834 if (equal >= chunks[1])
10835 return NULL;
10836 }
10837 if (*equal == '=') {
10838 if (pos + url_param_name_l > last) {
10839 /* process wrap case, we detect a wrap. In this case, the
10840 * comparison is performed in two parts.
10841 */
10842
10843 /* This is the end, we dont have any other chunk. */
10844 if (bufs != chunks || !bufs[2])
10845 return NULL;
10846
10847 /* Compute the length of each part of the comparison. */
10848 l1 = last - pos;
10849 l2 = url_param_name_l - l1;
10850
10851 /* The second buffer is too short to contain the compared string. */
10852 if (bufs[2] + l2 > bufs[3])
10853 return NULL;
10854
10855 if (memcmp(pos, url_param_name, l1) == 0 &&
10856 memcmp(bufs[2], url_param_name+l1, l2) == 0)
10857 return pos;
10858
10859 /* Perform wrapping and jump the string who fail the comparison. */
10860 bufs += 2;
10861 pos = bufs[0] + l2;
10862 last = bufs[1];
10863
10864 } else {
10865 /* process a simple comparison. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]10866 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
10867 return pos;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10868 pos += url_param_name_l + 1;
10869 if (fix_pointer_if_wrap(chunks, &pos))
10870 last = bufs[2];
10871 }
10872 }
10873
10874 while (1) {
10875 /* Look for the next delimiter. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]10876 while (pos < last && !is_param_delimiter(*pos, delim))
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10877 pos++;
10878 if (pos < last)
10879 break;
10880 /* process buffer wrapping. */
10881 if (bufs != chunks || !bufs[2])
10882 return NULL;
10883 bufs += 2;
10884 pos = bufs[0];
10885 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10886 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10887 pos++;
10888 }
10889 return NULL;
10890}
10891
10892/*
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]10893 * Given a url parameter name and a query string, find the next value.
10894 * An empty url_param_name matches the first available parameter.
10895 * If the parameter is found, 1 is returned and *vstart / *vend are updated to
10896 * respectively provide a pointer to the value and its end.
10897 * Otherwise, 0 is returned and vstart/vend are not modified.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10898 */
10899static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10900find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]10901 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10902 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10903{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10904 const char *arg_start, *qs_end;
10905 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10906
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10907 arg_start = chunks[0];
10908 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]10909 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10910 /* Looks for an argument name. */
10911 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]10912 url_param_name, url_param_name_l,
10913 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10914 /* Check for wrapping. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]10915 if (arg_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10916 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]10917 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10918 if (!arg_start)
10919 return 0;
10920
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]10921 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10922 while (1) {
10923 /* looks for the first argument. */
10924 value_start = memchr(arg_start, '=', qs_end - arg_start);
10925 if (!value_start) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10926 /* Check for wrapping. */
10927 if (arg_start >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]10928 arg_start < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10929 chunks[2]) {
10930 arg_start = chunks[2];
10931 qs_end = chunks[3];
10932 continue;
10933 }
10934 return 0;
10935 }
10936 break;
10937 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]10938 value_start++;
10939 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10940 else {
10941 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]10942 value_start = arg_start + url_param_name_l + 1;
10943
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10944 /* Check for pointer wrapping. */
10945 if (fix_pointer_if_wrap(chunks, &value_start)) {
10946 /* Update the end pointer. */
10947 qs_end = chunks[3];
10948
10949 /* Check for overflow. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]10950 if (value_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10951 return 0;
10952 }
10953 }
10954
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10955 value_end = value_start;
10956
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10957 while (1) {
10958 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
10959 value_end++;
10960 if (value_end < qs_end)
10961 break;
10962 /* process buffer wrapping. */
10963 if (value_end >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]10964 value_end < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10965 chunks[2]) {
10966 value_end = chunks[2];
10967 qs_end = chunks[3];
10968 continue;
10969 }
10970 break;
10971 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10972
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10973 *vstart = value_start;
10974 *vend = value_end;
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]10975 return 1;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10976}
10977
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10978/* This scans a URL-encoded query string. It takes an optionally wrapping
10979 * string whose first contigous chunk has its beginning in ctx->a[0] and end
10980 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
10981 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]10982 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10983static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]10984smp_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]10985{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10986 const char *vstart, *vend;
10987 struct chunk *temp;
10988 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10989
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10990 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]10991 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10992 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]10993 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10994 return 0;
10995
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]10996 /* Create sample. If the value is contiguous, return the pointer as CONST,
10997 * if the value is wrapped, copy-it in a buffer.
10998 */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10999 smp->data.type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11000 if (chunks[2] &&
11001 vstart >= chunks[0] && vstart <= chunks[1] &&
11002 vend >= chunks[2] && vend <= chunks[3]) {
11003 /* Wrapped case. */
11004 temp = get_trash_chunk();
11005 memcpy(temp->str, vstart, chunks[1] - vstart);
11006 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11007 smp->data.u.str.str = temp->str;
11008 smp->data.u.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11009 } else {
11010 /* Contiguous case. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11011 smp->data.u.str.str = (char *)vstart;
11012 smp->data.u.str.len = vend - vstart;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11013 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11014 }
11015
11016 /* Update context, check wrapping. */
11017 chunks[0] = vend;
11018 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11019 chunks[1] = chunks[3];
11020 chunks[2] = NULL;
11021 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11022
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11023 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11024 smp->flags |= SMP_F_NOT_LAST;
11025
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11026 return 1;
11027}
11028
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11029/* This function iterates over each parameter of the query string. It uses
11030 * 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]11031 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11032 * An optional parameter name is passed in args[0], otherwise any parameter is
11033 * considered. It supports an optional delimiter argument for the beginning of
11034 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11035 */
11036static int
11037smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11038{
11039 struct http_msg *msg;
11040 char delim = '?';
11041 const char *name;
11042 int name_len;
11043
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11044 if (!args ||
11045 (args[0].type && args[0].type != ARGT_STR) ||
11046 (args[1].type && args[1].type != ARGT_STR))
11047 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11048
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11049 name = "";
11050 name_len = 0;
11051 if (args->type == ARGT_STR) {
11052 name = args->data.str.str;
11053 name_len = args->data.str.len;
11054 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11055
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11056 if (args[1].type)
11057 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11058
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11059 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11060 CHECK_HTTP_MESSAGE_FIRST();
11061
11062 msg = &smp->strm->txn->req;
11063
11064 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11065 msg->sl.rq.u_l, delim);
11066 if (!smp->ctx.a[0])
11067 return 0;
11068
11069 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]11070
11071 /* Assume that the context is filled with NULL pointer
11072 * before the first call.
11073 * smp->ctx.a[2] = NULL;
11074 * smp->ctx.a[3] = NULL;
11075 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11076 }
11077
11078 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11079}
11080
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11081/* This function iterates over each parameter of the body. This requires
11082 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11083 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11084 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11085 * optional second part if the body wraps at the end of the buffer. An optional
11086 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11087 */
11088static int
11089smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11090{
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11091 struct http_msg *msg;
11092 unsigned long len;
11093 unsigned long block1;
11094 char *body;
11095 const char *name;
11096 int name_len;
11097
11098 if (!args || (args[0].type && args[0].type != ARGT_STR))
11099 return 0;
11100
11101 name = "";
11102 name_len = 0;
11103 if (args[0].type == ARGT_STR) {
11104 name = args[0].data.str.str;
11105 name_len = args[0].data.str.len;
11106 }
11107
11108 if (!smp->ctx.a[0]) { // first call, find the query string
11109 CHECK_HTTP_MESSAGE_FIRST();
11110
11111 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11112 msg = &smp->strm->txn->req;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11113 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11114 msg = &smp->strm->txn->rsp;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11115
11116 len = http_body_bytes(msg);
11117 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11118
11119 block1 = len;
11120 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11121 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11122
11123 if (block1 == len) {
11124 /* buffer is not wrapped (or empty) */
11125 smp->ctx.a[0] = body;
11126 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11127
11128 /* Assume that the context is filled with NULL pointer
11129 * before the first call.
11130 * smp->ctx.a[2] = NULL;
11131 * smp->ctx.a[3] = NULL;
11132 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11133 }
11134 else {
11135 /* buffer is wrapped, we need to defragment it */
11136 smp->ctx.a[0] = body;
11137 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11138 smp->ctx.a[2] = msg->chn->buf->data;
11139 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11140 }
11141 }
11142 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11143}
11144
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11145/* Return the signed integer value for the specified url parameter (see url_param
11146 * above).
11147 */
11148static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11149smp_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]11150{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11151 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11152
11153 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11154 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11155 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]11156 }
11157
11158 return ret;
11159}
11160
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11161/* This produces a 32-bit hash of the concatenation of the first occurrence of
11162 * the Host header followed by the path component if it begins with a slash ('/').
11163 * This means that '*' will not be added, resulting in exactly the first Host
11164 * entry. If no Host header is found, then the path is used. The resulting value
11165 * is hashed using the url hash followed by a full avalanche hash and provides a
11166 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11167 * high-traffic sites without having to store whole paths.
11168 * this differs from the base32 functions in that it includes the url parameters
11169 * as well as the path
11170 */
11171static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11172smp_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]11173{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11174 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11175 struct hdr_ctx ctx;
11176 unsigned int hash = 0;
11177 char *ptr, *beg, *end;
11178 int len;
11179
11180 CHECK_HTTP_MESSAGE_FIRST();
11181
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11182 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11183 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11184 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]11185 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11186 ptr = ctx.line + ctx.val;
11187 len = ctx.vlen;
11188 while (len--)
11189 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11190 }
11191
11192 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11193 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]11194 beg = http_get_path(txn);
11195 if (!beg)
11196 beg = end;
11197
11198 for (ptr = beg; ptr < end ; ptr++);
11199
11200 if (beg < ptr && *beg == '/') {
11201 while (beg < ptr)
11202 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11203 }
11204 hash = full_hash(hash);
11205
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11206 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11207 smp->data.u.sint = hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11208 smp->flags = SMP_F_VOL_1ST;
11209 return 1;
11210}
11211
11212/* This concatenates the source address with the 32-bit hash of the Host and
11213 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11214 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11215 * on the source address length. The URL hash is stored before the address so
11216 * that in environments where IPv6 is insignificant, truncating the output to
11217 * 8 bytes would still work.
11218 */
11219static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11220smp_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]11221{
11222 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11223 struct connection *cli_conn = objt_conn(smp->sess->origin);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11224
Dragan Dosendb5af612016-06-16 11:23:01 +0200[diff] [blame]11225 if (!cli_conn)
11226 return 0;
11227
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11228 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11229 return 0;
11230
11231 temp = get_trash_chunk();
Dragan Dosene5f41332016-06-16 11:08:08 +0200[diff] [blame]11232 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
11233 temp->len += sizeof(unsigned int);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11234
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11235 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11236 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11237 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]11238 temp->len += 4;
11239 break;
11240 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11241 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]11242 temp->len += 16;
11243 break;
11244 default:
11245 return 0;
11246 }
11247
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11248 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11249 smp->data.type = SMP_T_BIN;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11250 return 1;
11251}
11252
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11253/* This function is used to validate the arguments passed to any "hdr" fetch
11254 * keyword. These keywords support an optional positive or negative occurrence
11255 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11256 * is assumed that the types are already the correct ones. Returns 0 on error,
11257 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11258 * error message in case of error, that the caller is responsible for freeing.
11259 * The initial location must either be freeable or NULL.
11260 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]11261int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11262{
11263 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11264 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11265 return 0;
11266 }
11267 return 1;
11268}
11269
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11270/* takes an UINT value on input supposed to represent the time since EPOCH,
11271 * adds an optional offset found in args[0] and emits a string representing
11272 * the date in RFC-1123/5322 format.
11273 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11274static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11275{
Cyril Bontéf78d8962016-01-22 19:40:28 +0100[diff] [blame]11276 const char day[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11277 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11278 struct chunk *temp;
11279 struct tm *tm;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11280 /* 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]11281 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11282
11283 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11284 if (args && (args[0].type == ARGT_SINT))
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11285 curr_date += args[0].data.sint;
11286
11287 tm = gmtime(&curr_date);
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +0200[diff] [blame]11288 if (!tm)
11289 return 0;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11290
11291 temp = get_trash_chunk();
11292 temp->len = snprintf(temp->str, temp->size - temp->len,
11293 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11294 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11295 tm->tm_hour, tm->tm_min, tm->tm_sec);
11296
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11297 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11298 smp->data.type = SMP_T_STR;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11299 return 1;
11300}
11301
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11302/* Match language range with language tag. RFC2616 14.4:
11303 *
11304 * A language-range matches a language-tag if it exactly equals
11305 * the tag, or if it exactly equals a prefix of the tag such
11306 * that the first tag character following the prefix is "-".
11307 *
11308 * Return 1 if the strings match, else return 0.
11309 */
11310static inline int language_range_match(const char *range, int range_len,
11311 const char *tag, int tag_len)
11312{
11313 const char *end = range + range_len;
11314 const char *tend = tag + tag_len;
11315 while (range < end) {
11316 if (*range == '-' && tag == tend)
11317 return 1;
11318 if (*range != *tag || tag == tend)
11319 return 0;
11320 range++;
11321 tag++;
11322 }
11323 /* Return true only if the last char of the tag is matched. */
11324 return tag == tend;
11325}
11326
11327/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11328static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11329{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11330 const char *al = smp->data.u.str.str;
11331 const char *end = al + smp->data.u.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11332 const char *token;
11333 int toklen;
11334 int qvalue;
11335 const char *str;
11336 const char *w;
11337 int best_q = 0;
11338
11339 /* Set the constant to the sample, because the output of the
11340 * function will be peek in the constant configuration string.
11341 */
11342 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11343 smp->data.u.str.size = 0;
11344 smp->data.u.str.str = "";
11345 smp->data.u.str.len = 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11346
11347 /* Parse the accept language */
11348 while (1) {
11349
11350 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11351 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11352 al++;
11353 if (al >= end)
11354 break;
11355
11356 /* Start of the fisrt word. */
11357 token = al;
11358
11359 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11360 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11361 al++;
11362 if (al == token)
11363 goto expect_comma;
11364
11365 /* Length of the token. */
11366 toklen = al - token;
11367 qvalue = 1000;
11368
11369 /* Check if the token exists in the list. If the token not exists,
11370 * jump to the next token.
11371 */
11372 str = args[0].data.str.str;
11373 w = str;
11374 while (1) {
11375 if (*str == ';' || *str == '\0') {
11376 if (language_range_match(token, toklen, w, str-w))
11377 goto look_for_q;
11378 if (*str == '\0')
11379 goto expect_comma;
11380 w = str + 1;
11381 }
11382 str++;
11383 }
11384 goto expect_comma;
11385
11386look_for_q:
11387
11388 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11389 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11390 al++;
11391 if (al >= end)
11392 goto process_value;
11393
11394 /* If ',' is found, process the result */
11395 if (*al == ',')
11396 goto process_value;
11397
11398 /* If the character is different from ';', look
11399 * for the end of the header part in best effort.
11400 */
11401 if (*al != ';')
11402 goto expect_comma;
11403
11404 /* Assumes that the char is ';', now expect "q=". */
11405 al++;
11406
11407 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11408 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11409 al++;
11410 if (al >= end)
11411 goto process_value;
11412
11413 /* Expect 'q'. If no 'q', continue in best effort */
11414 if (*al != 'q')
11415 goto process_value;
11416 al++;
11417
11418 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11419 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11420 al++;
11421 if (al >= end)
11422 goto process_value;
11423
11424 /* Expect '='. If no '=', continue in best effort */
11425 if (*al != '=')
11426 goto process_value;
11427 al++;
11428
11429 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11430 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11431 al++;
11432 if (al >= end)
11433 goto process_value;
11434
11435 /* Parse the q value. */
11436 qvalue = parse_qvalue(al, &al);
11437
11438process_value:
11439
11440 /* If the new q value is the best q value, then store the associated
11441 * language in the response. If qvalue is the biggest value (1000),
11442 * break the process.
11443 */
11444 if (qvalue > best_q) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11445 smp->data.u.str.str = (char *)w;
11446 smp->data.u.str.len = str - w;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11447 if (qvalue >= 1000)
11448 break;
11449 best_q = qvalue;
11450 }
11451
11452expect_comma:
11453
11454 /* Expect comma or end. If the end is detected, quit the loop. */
11455 while (al < end && *al != ',')
11456 al++;
11457 if (al >= end)
11458 break;
11459
11460 /* Comma is found, jump it and restart the analyzer. */
11461 al++;
11462 }
11463
11464 /* Set default value if required. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11465 if (smp->data.u.str.len == 0 && args[1].type == ARGT_STR) {
11466 smp->data.u.str.str = args[1].data.str.str;
11467 smp->data.u.str.len = args[1].data.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11468 }
11469
11470 /* Return true only if a matching language was found. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11471 return smp->data.u.str.len != 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11472}
11473
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11474/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11475static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11476{
11477 /* If the constant flag is set or if not size is avalaible at
11478 * the end of the buffer, copy the string in other buffer
11479 * before decoding.
11480 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11481 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]11482 struct chunk *str = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11483 memcpy(str->str, smp->data.u.str.str, smp->data.u.str.len);
11484 smp->data.u.str.str = str->str;
11485 smp->data.u.str.size = str->size;
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11486 smp->flags &= ~SMP_F_CONST;
11487 }
11488
11489 /* Add final \0 required by url_decode(), and convert the input string. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11490 smp->data.u.str.str[smp->data.u.str.len] = '\0';
11491 smp->data.u.str.len = url_decode(smp->data.u.str.str);
Christopher Fauleta2584792017-10-05 10:03:12 +0200[diff] [blame]11492 return (smp->data.u.str.len >= 0);
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11493}
11494
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11495static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
11496{
11497 struct proxy *fe = strm_fe(smp->strm);
11498 int idx, i;
11499 struct cap_hdr *hdr;
11500 int len;
11501
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11502 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11503 return 0;
11504
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11505 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11506
11507 /* Check the availibity of the capture id. */
11508 if (idx > fe->nb_req_cap - 1)
11509 return 0;
11510
11511 /* Look for the original configuration. */
11512 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
11513 hdr != NULL && i != idx ;
11514 i--, hdr = hdr->next);
11515 if (!hdr)
11516 return 0;
11517
11518 /* check for the memory allocation */
11519 if (smp->strm->req_cap[hdr->index] == NULL)
11520 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
11521 if (smp->strm->req_cap[hdr->index] == NULL)
11522 return 0;
11523
11524 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11525 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11526 if (len > hdr->len)
11527 len = hdr->len;
11528
11529 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11530 memcpy(smp->strm->req_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11531 smp->strm->req_cap[idx][len] = '\0';
11532
11533 return 1;
11534}
11535
11536static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
11537{
11538 struct proxy *fe = strm_fe(smp->strm);
11539 int idx, i;
11540 struct cap_hdr *hdr;
11541 int len;
11542
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11543 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11544 return 0;
11545
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11546 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11547
11548 /* Check the availibity of the capture id. */
11549 if (idx > fe->nb_rsp_cap - 1)
11550 return 0;
11551
11552 /* Look for the original configuration. */
11553 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
11554 hdr != NULL && i != idx ;
11555 i--, hdr = hdr->next);
11556 if (!hdr)
11557 return 0;
11558
11559 /* check for the memory allocation */
11560 if (smp->strm->res_cap[hdr->index] == NULL)
11561 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
11562 if (smp->strm->res_cap[hdr->index] == NULL)
11563 return 0;
11564
11565 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11566 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11567 if (len > hdr->len)
11568 len = hdr->len;
11569
11570 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11571 memcpy(smp->strm->res_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11572 smp->strm->res_cap[idx][len] = '\0';
11573
11574 return 1;
11575}
11576
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11577/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11578 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11579 * the relevant part of the request line accordingly. Then it updates various
11580 * pointers to the next elements which were moved, and the total buffer length.
11581 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11582 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
11583 * error, though this can be revisited when this code is finally exploited.
11584 *
11585 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
11586 * query string and 3 to replace uri.
11587 *
11588 * In query string case, the mark question '?' must be set at the start of the
11589 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11590 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11591int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]11592 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11593{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]11594 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11595 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11596 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11597 int delta;
11598
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11599 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11600 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]11601 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11602 cur_end = cur_ptr + txn->req.sl.rq.m_l;
11603
11604 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11605 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11606 txn->req.sl.rq.m_l += delta;
11607 txn->req.sl.rq.u += delta;
11608 txn->req.sl.rq.v += delta;
11609 break;
11610
11611 case 1: // path
11612 cur_ptr = http_get_path(txn);
11613 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]11614 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11615
11616 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]11617 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]11618 cur_end++;
11619
11620 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11621 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11622 txn->req.sl.rq.u_l += delta;
11623 txn->req.sl.rq.v += delta;
11624 break;
11625
11626 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11627 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]11628 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11629 cur_end = cur_ptr + txn->req.sl.rq.u_l;
11630 while (cur_ptr < cur_end && *cur_ptr != '?')
11631 cur_ptr++;
11632
11633 /* skip the question mark or indicate that we must insert it
11634 * (but only if the format string is not empty then).
11635 */
11636 if (cur_ptr < cur_end)
11637 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11638 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11639 offset = 0;
11640
11641 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11642 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11643 txn->req.sl.rq.u_l += delta;
11644 txn->req.sl.rq.v += delta;
11645 break;
11646
11647 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]11648 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11649 cur_end = cur_ptr + txn->req.sl.rq.u_l;
11650
11651 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11652 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11653 txn->req.sl.rq.u_l += delta;
11654 txn->req.sl.rq.v += delta;
11655 break;
11656
11657 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11658 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11659 }
11660
11661 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11662 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]11663 txn->req.sl.rq.l += delta;
11664 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11665 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11666 return 0;
11667}
11668
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]11669/* This function replace the HTTP status code and the associated message. The
11670 * variable <status> contains the new status code. This function never fails.
11671 */
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]11672void http_set_status(unsigned int status, const char *reason, struct stream *s)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]11673{
11674 struct http_txn *txn = s->txn;
11675 char *cur_ptr, *cur_end;
11676 int delta;
11677 char *res;
11678 int c_l;
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]11679 const char *msg = reason;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]11680 int msg_len;
11681
11682 chunk_reset(&trash);
11683
11684 res = ultoa_o(status, trash.str, trash.size);
11685 c_l = res - trash.str;
11686
11687 trash.str[c_l] = ' ';
11688 trash.len = c_l + 1;
11689
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]11690 /* Do we have a custom reason format string? */
11691 if (msg == NULL)
11692 msg = get_reason(status);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]11693 msg_len = strlen(msg);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]11694 strncpy(&trash.str[trash.len], msg, trash.size - trash.len);
11695 trash.len += msg_len;
11696
11697 cur_ptr = s->res.buf->p + txn->rsp.sl.st.c;
11698 cur_end = s->res.buf->p + txn->rsp.sl.st.r + txn->rsp.sl.st.r_l;
11699
11700 /* commit changes and adjust message */
11701 delta = buffer_replace2(s->res.buf, cur_ptr, cur_end, trash.str, trash.len);
11702
11703 /* adjust res line offsets and lengths */
11704 txn->rsp.sl.st.r += c_l - txn->rsp.sl.st.c_l;
11705 txn->rsp.sl.st.c_l = c_l;
11706 txn->rsp.sl.st.r_l = msg_len;
11707
11708 delta = trash.len - (cur_end - cur_ptr);
11709 txn->rsp.sl.st.l += delta;
11710 txn->hdr_idx.v[0].len += delta;
11711 http_msg_move_end(&txn->rsp, delta);
11712}
11713
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11714/* This function executes one of the set-{method,path,query,uri} actions. It
11715 * builds a string in the trash from the specified format string. It finds
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]11716 * the action to be performed in <http.action>, previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11717 * parse_set_req_line(). The replacement action is excuted by the function
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]11718 * http_action_set_req_line(). It always returns ACT_RET_CONT. If an error
11719 * occurs the action is canceled, but the rule processing continue.
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11720 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]11721enum act_return http_action_set_req_line(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]11722 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11723{
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]11724 struct chunk *replace;
11725 enum act_return ret = ACT_RET_ERR;
11726
11727 replace = alloc_trash_chunk();
11728 if (!replace)
11729 goto leave;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11730
11731 /* If we have to create a query string, prepare a '?'. */
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]11732 if (rule->arg.http.action == 2)
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]11733 replace->str[replace->len++] = '?';
11734 replace->len += build_logline(s, replace->str + replace->len, replace->size - replace->len,
11735 &rule->arg.http.logfmt);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11736
Dragan Dosen2ae327e2017-10-26 11:25:10 +0200[diff] [blame]11737 http_replace_req_line(rule->arg.http.action, replace->str, replace->len, px, s);
11738
11739 ret = ACT_RET_CONT;
11740
11741leave:
11742 free_trash_chunk(replace);
11743 return ret;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11744}
11745
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]11746/* This function is just a compliant action wrapper for "set-status". */
11747enum act_return action_http_set_status(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]11748 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]11749{
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]11750 http_set_status(rule->arg.status.code, rule->arg.status.reason, s);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]11751 return ACT_RET_CONT;
11752}
11753
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11754/* parse an http-request action among :
11755 * set-method
11756 * set-path
11757 * set-query
11758 * set-uri
11759 *
11760 * All of them accept a single argument of type string representing a log-format.
11761 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
11762 * 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]11763 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11764 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]11765enum act_parse_ret parse_set_req_line(const char **args, int *orig_arg, struct proxy *px,
11766 struct act_rule *rule, char **err)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11767{
11768 int cur_arg = *orig_arg;
11769
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]11770 rule->action = ACT_CUSTOM;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11771
11772 switch (args[0][4]) {
11773 case 'm' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]11774 rule->arg.http.action = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11775 rule->action_ptr = http_action_set_req_line;
11776 break;
11777 case 'p' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]11778 rule->arg.http.action = 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11779 rule->action_ptr = http_action_set_req_line;
11780 break;
11781 case 'q' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]11782 rule->arg.http.action = 2;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11783 rule->action_ptr = http_action_set_req_line;
11784 break;
11785 case 'u' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]11786 rule->arg.http.action = 3;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11787 rule->action_ptr = http_action_set_req_line;
11788 break;
11789 default:
11790 memprintf(err, "internal error: unhandled action '%s'", args[0]);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]11791 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11792 }
11793
11794 if (!*args[cur_arg] ||
11795 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
11796 memprintf(err, "expects exactly 1 argument <format>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]11797 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11798 }
11799
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]11800 LIST_INIT(&rule->arg.http.logfmt);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11801 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]11802 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]11803 (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]11804 return ACT_RET_PRS_ERR;
11805 }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11806
11807 (*orig_arg)++;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]11808 return ACT_RET_PRS_OK;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11809}
11810
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]11811/* parse set-status action:
11812 * This action accepts a single argument of type int representing
11813 * an http status code. It returns ACT_RET_PRS_OK on success,
11814 * ACT_RET_PRS_ERR on error.
11815 */
11816enum act_parse_ret parse_http_set_status(const char **args, int *orig_arg, struct proxy *px,
11817 struct act_rule *rule, char **err)
11818{
11819 char *error;
11820
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]11821 rule->action = ACT_CUSTOM;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]11822 rule->action_ptr = action_http_set_status;
11823
11824 /* Check if an argument is available */
11825 if (!*args[*orig_arg]) {
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]11826 memprintf(err, "expects 1 argument: <status>; or 3 arguments: <status> reason <fmt>");
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]11827 return ACT_RET_PRS_ERR;
11828 }
11829
11830 /* convert status code as integer */
11831 rule->arg.status.code = strtol(args[*orig_arg], &error, 10);
11832 if (*error != '\0' || rule->arg.status.code < 100 || rule->arg.status.code > 999) {
11833 memprintf(err, "expects an integer status code between 100 and 999");
11834 return ACT_RET_PRS_ERR;
11835 }
11836
11837 (*orig_arg)++;
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]11838
11839 /* set custom reason string */
11840 rule->arg.status.reason = NULL; // If null, we use the default reason for the status code.
11841 if (*args[*orig_arg] && strcmp(args[*orig_arg], "reason") == 0 &&
11842 (*args[*orig_arg + 1] && strcmp(args[*orig_arg + 1], "if") != 0 && strcmp(args[*orig_arg + 1], "unless") != 0)) {
11843 (*orig_arg)++;
11844 rule->arg.status.reason = strdup(args[*orig_arg]);
11845 (*orig_arg)++;
11846 }
11847
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]11848 return ACT_RET_PRS_OK;
11849}
11850
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11851/* This function executes the "capture" action. It executes a fetch expression,
11852 * turns the result into a string and puts it in a capture slot. It always
11853 * returns 1. If an error occurs the action is cancelled, but the rule
11854 * processing continues.
11855 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]11856enum act_return http_action_req_capture(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]11857 struct session *sess, struct stream *s, int flags)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11858{
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11859 struct sample *key;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]11860 struct cap_hdr *h = rule->arg.cap.hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11861 char **cap = s->req_cap;
11862 int len;
11863
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]11864 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]11865 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]11866 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11867
11868 if (cap[h->index] == NULL)
11869 cap[h->index] = pool_alloc2(h->pool);
11870
11871 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]11872 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11873
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11874 len = key->data.u.str.len;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11875 if (len > h->len)
11876 len = h->len;
11877
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11878 memcpy(cap[h->index], key->data.u.str.str, len);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11879 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]11880 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11881}
11882
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11883/* This function executes the "capture" action and store the result in a
11884 * capture slot if exists. It executes a fetch expression, turns the result
11885 * into a string and puts it in a capture slot. It always returns 1. If an
11886 * error occurs the action is cancelled, but the rule processing continues.
11887 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]11888enum 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]11889 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11890{
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11891 struct sample *key;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11892 struct cap_hdr *h;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11893 char **cap = s->req_cap;
11894 struct proxy *fe = strm_fe(s);
11895 int len;
11896 int i;
11897
11898 /* Look for the original configuration. */
11899 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]11900 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11901 i--, h = h->next);
11902 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]11903 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11904
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]11905 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]11906 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]11907 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11908
11909 if (cap[h->index] == NULL)
11910 cap[h->index] = pool_alloc2(h->pool);
11911
11912 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]11913 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11914
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11915 len = key->data.u.str.len;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11916 if (len > h->len)
11917 len = h->len;
11918
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11919 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11920 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]11921 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11922}
11923
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11924/* parse an "http-request capture" action. It takes a single argument which is
11925 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11926 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]11927 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11928 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]11929enum act_parse_ret parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px,
11930 struct act_rule *rule, char **err)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11931{
11932 struct sample_expr *expr;
11933 struct cap_hdr *hdr;
11934 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]11935 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11936
11937 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
11938 if (strcmp(args[cur_arg], "if") == 0 ||
11939 strcmp(args[cur_arg], "unless") == 0)
11940 break;
11941
11942 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11943 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]11944 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11945 }
11946
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11947 cur_arg = *orig_arg;
11948 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
11949 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]11950 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11951
11952 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
11953 memprintf(err,
11954 "fetch method '%s' extracts information from '%s', none of which is available here",
11955 args[cur_arg-1], sample_src_names(expr->fetch->use));
11956 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]11957 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11958 }
11959
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11960 if (!args[cur_arg] || !*args[cur_arg]) {
11961 memprintf(err, "expects 'len or 'id'");
11962 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]11963 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11964 }
11965
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11966 if (strcmp(args[cur_arg], "len") == 0) {
11967 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11968
11969 if (!(px->cap & PR_CAP_FE)) {
11970 memprintf(err, "proxy '%s' has no frontend capability", px->id);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]11971 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11972 }
11973
11974 proxy->conf.args.ctx = ARGC_CAP;
11975
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11976 if (!args[cur_arg]) {
11977 memprintf(err, "missing length value");
11978 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]11979 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11980 }
11981 /* we copy the table name for now, it will be resolved later */
11982 len = atoi(args[cur_arg]);
11983 if (len <= 0) {
11984 memprintf(err, "length must be > 0");
11985 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]11986 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11987 }
11988 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]11989
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11990 if (!len) {
11991 memprintf(err, "a positive 'len' argument is mandatory");
11992 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]11993 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11994 }
11995
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]11996 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]11997 hdr->next = px->req_cap;
11998 hdr->name = NULL; /* not a header capture */
11999 hdr->namelen = 0;
12000 hdr->len = len;
12001 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12002 hdr->index = px->nb_req_cap++;
12003
12004 px->req_cap = hdr;
12005 px->to_log |= LW_REQHDR;
12006
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12007 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12008 rule->action_ptr = http_action_req_capture;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12009 rule->arg.cap.expr = expr;
12010 rule->arg.cap.hdr = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12011 }
12012
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12013 else if (strcmp(args[cur_arg], "id") == 0) {
12014 int id;
12015 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12016
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12017 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12018
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12019 if (!args[cur_arg]) {
12020 memprintf(err, "missing id value");
12021 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12022 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12023 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12024
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12025 id = strtol(args[cur_arg], &error, 10);
12026 if (*error != '\0') {
12027 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12028 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12029 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12030 }
12031 cur_arg++;
12032
12033 proxy->conf.args.ctx = ARGC_CAP;
12034
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12035 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12036 rule->action_ptr = http_action_req_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12037 rule->arg.capid.expr = expr;
12038 rule->arg.capid.idx = id;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12039 }
12040
12041 else {
12042 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12043 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12044 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12045 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12046
12047 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12048 return ACT_RET_PRS_OK;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12049}
12050
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12051/* This function executes the "capture" action and store the result in a
12052 * capture slot if exists. It executes a fetch expression, turns the result
12053 * into a string and puts it in a capture slot. It always returns 1. If an
12054 * error occurs the action is cancelled, but the rule processing continues.
12055 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12056enum 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]12057 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12058{
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12059 struct sample *key;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12060 struct cap_hdr *h;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12061 char **cap = s->res_cap;
12062 struct proxy *fe = strm_fe(s);
12063 int len;
12064 int i;
12065
12066 /* Look for the original configuration. */
12067 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12068 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12069 i--, h = h->next);
12070 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12071 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12072
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12073 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]12074 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12075 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12076
12077 if (cap[h->index] == NULL)
12078 cap[h->index] = pool_alloc2(h->pool);
12079
12080 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12081 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12082
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12083 len = key->data.u.str.len;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12084 if (len > h->len)
12085 len = h->len;
12086
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12087 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12088 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12089 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12090}
12091
12092/* parse an "http-response capture" action. It takes a single argument which is
12093 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12094 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12095 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12096 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12097enum act_parse_ret parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px,
12098 struct act_rule *rule, char **err)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12099{
12100 struct sample_expr *expr;
12101 int cur_arg;
12102 int id;
12103 char *error;
12104
12105 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12106 if (strcmp(args[cur_arg], "if") == 0 ||
12107 strcmp(args[cur_arg], "unless") == 0)
12108 break;
12109
12110 if (cur_arg < *orig_arg + 3) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]12111 memprintf(err, "expects <expression> id <idx>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12112 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12113 }
12114
12115 cur_arg = *orig_arg;
12116 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12117 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12118 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12119
12120 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12121 memprintf(err,
12122 "fetch method '%s' extracts information from '%s', none of which is available here",
12123 args[cur_arg-1], sample_src_names(expr->fetch->use));
12124 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12125 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12126 }
12127
12128 if (!args[cur_arg] || !*args[cur_arg]) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]12129 memprintf(err, "expects 'id'");
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12130 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12131 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12132 }
12133
12134 if (strcmp(args[cur_arg], "id") != 0) {
12135 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12136 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12137 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12138 }
12139
12140 cur_arg++;
12141
12142 if (!args[cur_arg]) {
12143 memprintf(err, "missing id value");
12144 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12145 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12146 }
12147
12148 id = strtol(args[cur_arg], &error, 10);
12149 if (*error != '\0') {
12150 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12151 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12152 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12153 }
12154 cur_arg++;
12155
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12156 proxy->conf.args.ctx = ARGC_CAP;
12157
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12158 rule->action = ACT_CUSTOM;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12159 rule->action_ptr = http_action_res_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12160 rule->arg.capid.expr = expr;
12161 rule->arg.capid.idx = id;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12162
12163 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12164 return ACT_RET_PRS_OK;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12165}
12166
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12167/*
12168 * Return the struct http_req_action_kw associated to a keyword.
12169 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12170struct action_kw *action_http_req_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12171{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12172 return action_lookup(&http_req_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12173}
12174
12175/*
12176 * Return the struct http_res_action_kw associated to a keyword.
12177 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12178struct action_kw *action_http_res_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12179{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12180 return action_lookup(&http_res_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12181}
12182
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12183
12184/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
12185 * now.
12186 */
12187static int cli_parse_show_errors(char **args, struct appctx *appctx, void *private)
12188{
12189 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
12190 return 1;
12191
Willy Tarreau234ba2d2016-11-25 08:39:10 +0100[diff] [blame]12192 if (*args[2]) {
12193 struct proxy *px;
12194
12195 px = proxy_find_by_name(args[2], 0, 0);
12196 if (px)
12197 appctx->ctx.errors.iid = px->uuid;
12198 else
12199 appctx->ctx.errors.iid = atoi(args[2]);
12200
12201 if (!appctx->ctx.errors.iid) {
Andjelko Iharosc3680ec2017-07-20 16:49:14 +0200[diff] [blame]12202 appctx->ctx.cli.severity = LOG_ERR;
Willy Tarreau234ba2d2016-11-25 08:39:10 +0100[diff] [blame]12203 appctx->ctx.cli.msg = "No such proxy.\n";
12204 appctx->st0 = CLI_ST_PRINT;
12205 return 1;
12206 }
12207 }
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12208 else
Willy Tarreau234ba2d2016-11-25 08:39:10 +0100[diff] [blame]12209 appctx->ctx.errors.iid = -1; // dump all proxies
12210
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]12211 appctx->ctx.errors.flag = 0;
12212 if (strcmp(args[3], "request") == 0)
12213 appctx->ctx.errors.flag |= 4; // ignore response
12214 else if (strcmp(args[3], "response") == 0)
12215 appctx->ctx.errors.flag |= 2; // ignore request
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12216 appctx->ctx.errors.px = NULL;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12217 return 0;
12218}
12219
12220/* This function dumps all captured errors onto the stream interface's
12221 * read buffer. It returns 0 if the output buffer is full and it needs
12222 * to be called again, otherwise non-zero.
12223 */
12224static int cli_io_handler_show_errors(struct appctx *appctx)
12225{
12226 struct stream_interface *si = appctx->owner;
12227 extern const char *monthname[12];
12228
12229 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
12230 return 1;
12231
12232 chunk_reset(&trash);
12233
12234 if (!appctx->ctx.errors.px) {
12235 /* the function had not been called yet, let's prepare the
12236 * buffer for a response.
12237 */
12238 struct tm tm;
12239
12240 get_localtime(date.tv_sec, &tm);
12241 chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
12242 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
12243 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
12244 error_snapshot_id);
12245
Willy Tarreau06d80a92017-10-19 14:32:15 +0200[diff] [blame]12246 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12247 /* Socket buffer full. Let's try again later from the same point */
12248 si_applet_cant_put(si);
12249 return 0;
12250 }
12251
12252 appctx->ctx.errors.px = proxy;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12253 appctx->ctx.errors.bol = 0;
12254 appctx->ctx.errors.ptr = -1;
12255 }
12256
12257 /* we have two inner loops here, one for the proxy, the other one for
12258 * the buffer.
12259 */
12260 while (appctx->ctx.errors.px) {
12261 struct error_snapshot *es;
12262
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]12263 if ((appctx->ctx.errors.flag & 1) == 0) {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12264 es = &appctx->ctx.errors.px->invalid_req;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]12265 if (appctx->ctx.errors.flag & 2) // skip req
12266 goto next;
12267 }
12268 else {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12269 es = &appctx->ctx.errors.px->invalid_rep;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]12270 if (appctx->ctx.errors.flag & 4) // skip resp
12271 goto next;
12272 }
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12273
12274 if (!es->when.tv_sec)
12275 goto next;
12276
12277 if (appctx->ctx.errors.iid >= 0 &&
12278 appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
12279 es->oe->uuid != appctx->ctx.errors.iid)
12280 goto next;
12281
12282 if (appctx->ctx.errors.ptr < 0) {
12283 /* just print headers now */
12284
12285 char pn[INET6_ADDRSTRLEN];
12286 struct tm tm;
12287 int port;
12288
12289 get_localtime(es->when.tv_sec, &tm);
12290 chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
12291 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
12292 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
12293
12294 switch (addr_to_str(&es->src, pn, sizeof(pn))) {
12295 case AF_INET:
12296 case AF_INET6:
12297 port = get_host_port(&es->src);
12298 break;
12299 default:
12300 port = 0;
12301 }
12302
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]12303 switch (appctx->ctx.errors.flag & 1) {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12304 case 0:
12305 chunk_appendf(&trash,
12306 " frontend %s (#%d): invalid request\n"
12307 " backend %s (#%d)",
12308 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
12309 (es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
12310 (es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
12311 break;
12312 case 1:
12313 chunk_appendf(&trash,
12314 " backend %s (#%d): invalid response\n"
12315 " frontend %s (#%d)",
12316 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
12317 es->oe->id, es->oe->uuid);
12318 break;
12319 }
12320
12321 chunk_appendf(&trash,
12322 ", server %s (#%d), event #%u\n"
12323 " src %s:%d, session #%d, session flags 0x%08x\n"
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]12324 " HTTP msg state %s(%d), msg flags 0x%08x, tx flags 0x%08x\n"
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12325 " HTTP chunk len %lld bytes, HTTP body len %lld bytes\n"
12326 " buffer flags 0x%08x, out %d bytes, total %lld bytes\n"
12327 " pending %d bytes, wrapping at %d, error at position %d:\n \n",
12328 es->srv ? es->srv->id : "<NONE>", es->srv ? es->srv->puid : -1,
12329 es->ev_id,
12330 pn, port, es->sid, es->s_flags,
Willy Tarreau0da5b3b2017-09-21 09:30:46 +0200[diff] [blame]12331 h1_msg_state_str(es->state), es->state, es->m_flags, es->t_flags,
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12332 es->m_clen, es->m_blen,
12333 es->b_flags, es->b_out, es->b_tot,
12334 es->len, es->b_wrap, es->pos);
12335
Willy Tarreau06d80a92017-10-19 14:32:15 +0200[diff] [blame]12336 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12337 /* Socket buffer full. Let's try again later from the same point */
12338 si_applet_cant_put(si);
12339 return 0;
12340 }
12341 appctx->ctx.errors.ptr = 0;
12342 appctx->ctx.errors.sid = es->sid;
12343 }
12344
12345 if (appctx->ctx.errors.sid != es->sid) {
12346 /* the snapshot changed while we were dumping it */
12347 chunk_appendf(&trash,
12348 " WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
Willy Tarreau06d80a92017-10-19 14:32:15 +0200[diff] [blame]12349 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12350 si_applet_cant_put(si);
12351 return 0;
12352 }
12353 goto next;
12354 }
12355
12356 /* OK, ptr >= 0, so we have to dump the current line */
12357 while (es->buf && appctx->ctx.errors.ptr < es->len && appctx->ctx.errors.ptr < global.tune.bufsize) {
12358 int newptr;
12359 int newline;
12360
12361 newline = appctx->ctx.errors.bol;
12362 newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->len, &newline, appctx->ctx.errors.ptr);
12363 if (newptr == appctx->ctx.errors.ptr)
12364 return 0;
12365
Willy Tarreau06d80a92017-10-19 14:32:15 +0200[diff] [blame]12366 if (ci_putchk(si_ic(si), &trash) == -1) {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12367 /* Socket buffer full. Let's try again later from the same point */
12368 si_applet_cant_put(si);
12369 return 0;
12370 }
12371 appctx->ctx.errors.ptr = newptr;
12372 appctx->ctx.errors.bol = newline;
12373 };
12374 next:
12375 appctx->ctx.errors.bol = 0;
12376 appctx->ctx.errors.ptr = -1;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]12377 appctx->ctx.errors.flag ^= 1;
12378 if (!(appctx->ctx.errors.flag & 1))
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12379 appctx->ctx.errors.px = appctx->ctx.errors.px->next;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12380 }
12381
12382 /* dump complete */
12383 return 1;
12384}
12385
12386/* register cli keywords */
12387static struct cli_kw_list cli_kws = {{ },{
12388 { { "show", "errors", NULL },
12389 "show errors : report last request and response errors for each proxy",
12390 cli_parse_show_errors, cli_io_handler_show_errors, NULL,
12391 },
12392 {{},}
12393}};
12394
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12395/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12396/* All supported ACL keywords must be declared here. */
12397/************************************************************************/
12398
12399/* Note: must not be declared <const> as its list will be overwritten.
12400 * Please take care of keeping this list alphabetically sorted.
12401 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12402static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12403 { "base", "base", PAT_MATCH_STR },
12404 { "base_beg", "base", PAT_MATCH_BEG },
12405 { "base_dir", "base", PAT_MATCH_DIR },
12406 { "base_dom", "base", PAT_MATCH_DOM },
12407 { "base_end", "base", PAT_MATCH_END },
12408 { "base_len", "base", PAT_MATCH_LEN },
12409 { "base_reg", "base", PAT_MATCH_REG },
12410 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]12411
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12412 { "cook", "req.cook", PAT_MATCH_STR },
12413 { "cook_beg", "req.cook", PAT_MATCH_BEG },
12414 { "cook_dir", "req.cook", PAT_MATCH_DIR },
12415 { "cook_dom", "req.cook", PAT_MATCH_DOM },
12416 { "cook_end", "req.cook", PAT_MATCH_END },
12417 { "cook_len", "req.cook", PAT_MATCH_LEN },
12418 { "cook_reg", "req.cook", PAT_MATCH_REG },
12419 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12420
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12421 { "hdr", "req.hdr", PAT_MATCH_STR },
12422 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
12423 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
12424 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
12425 { "hdr_end", "req.hdr", PAT_MATCH_END },
12426 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
12427 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
12428 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12429
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12430 /* these two declarations uses strings with list storage (in place
12431 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
12432 * and delete functions are relative to the list management. The parse
12433 * and match method are related to the corresponding fetch methods. This
12434 * is very particular ACL declaration mode.
12435 */
12436 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
12437 { "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]12438
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12439 { "path", "path", PAT_MATCH_STR },
12440 { "path_beg", "path", PAT_MATCH_BEG },
12441 { "path_dir", "path", PAT_MATCH_DIR },
12442 { "path_dom", "path", PAT_MATCH_DOM },
12443 { "path_end", "path", PAT_MATCH_END },
12444 { "path_len", "path", PAT_MATCH_LEN },
12445 { "path_reg", "path", PAT_MATCH_REG },
12446 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12447
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12448 { "req_ver", "req.ver", PAT_MATCH_STR },
12449 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12450
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12451 { "scook", "res.cook", PAT_MATCH_STR },
12452 { "scook_beg", "res.cook", PAT_MATCH_BEG },
12453 { "scook_dir", "res.cook", PAT_MATCH_DIR },
12454 { "scook_dom", "res.cook", PAT_MATCH_DOM },
12455 { "scook_end", "res.cook", PAT_MATCH_END },
12456 { "scook_len", "res.cook", PAT_MATCH_LEN },
12457 { "scook_reg", "res.cook", PAT_MATCH_REG },
12458 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12459
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12460 { "shdr", "res.hdr", PAT_MATCH_STR },
12461 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
12462 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
12463 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
12464 { "shdr_end", "res.hdr", PAT_MATCH_END },
12465 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
12466 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
12467 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12468
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12469 { "url", "url", PAT_MATCH_STR },
12470 { "url_beg", "url", PAT_MATCH_BEG },
12471 { "url_dir", "url", PAT_MATCH_DIR },
12472 { "url_dom", "url", PAT_MATCH_DOM },
12473 { "url_end", "url", PAT_MATCH_END },
12474 { "url_len", "url", PAT_MATCH_LEN },
12475 { "url_reg", "url", PAT_MATCH_REG },
12476 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12477
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12478 { "urlp", "urlp", PAT_MATCH_STR },
12479 { "urlp_beg", "urlp", PAT_MATCH_BEG },
12480 { "urlp_dir", "urlp", PAT_MATCH_DIR },
12481 { "urlp_dom", "urlp", PAT_MATCH_DOM },
12482 { "urlp_end", "urlp", PAT_MATCH_END },
12483 { "urlp_len", "urlp", PAT_MATCH_LEN },
12484 { "urlp_reg", "urlp", PAT_MATCH_REG },
12485 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12486
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]12487 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12488}};
12489
12490/************************************************************************/
12491/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12492/************************************************************************/
12493/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12494static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12495 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12496 { "base32", smp_fetch_base32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12497 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12498
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]12499 /* capture are allocated and are permanent in the stream */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12500 { "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]12501
12502 /* retrieve these captures from the HTTP logs */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12503 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12504 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12505 { "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]12506
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12507 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
12508 { "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]12509
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12510 /* cookie is valid in both directions (eg: for "stick ...") but cook*
12511 * are only here to match the ACL's name, are request-only and are used
12512 * for ACL compatibility only.
12513 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12514 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12515 { "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]12516 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12517 { "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]12518
12519 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
12520 * only here to match the ACL's name, are request-only and are used for
12521 * ACL compatibility only.
12522 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12523 { "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]12524 { "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]12525 { "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]12526 { "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]12527
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]12528 { "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]12529 { "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]12530 { "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]12531 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12532 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]12533 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12534
12535 /* HTTP protocol on the request path */
12536 { "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]12537 { "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]12538
12539 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12540 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
12541 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12542
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]12543 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12544 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
12545 { "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]12546 { "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]12547
Thierry FOURNIERd7d88812017-04-19 15:15:14 +0200[diff] [blame]12548 { "req.hdrs", smp_fetch_hdrs, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER5617dce2017-04-09 05:38:19 +0200[diff] [blame]12549 { "req.hdrs_bin", smp_fetch_hdrs_bin, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12550
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12551 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12552 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
12553 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12554
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12555 /* 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]12556 { "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]12557 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12558 { "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]12559
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12560 { "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]12561 { "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]12562 { "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]12563 { "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]12564 { "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]12565 { "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]12566 { "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]12567
12568 /* 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]12569 { "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]12570 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12571 { "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]12572
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12573 { "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]12574 { "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]12575 { "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]12576 { "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]12577 { "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]12578 { "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]12579 { "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]12580
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12581 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12582 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12583 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12584 { "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]12585 { "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]12586
12587 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12588 { "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]12589 { "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]12590 { "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]12591 { "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]12592
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12593 { "status", smp_fetch_stcode, 0, NULL, SMP_T_SINT, SMP_USE_HRSHP },
Thierry Fournier0e00dca2016-04-07 15:47:40 +0200[diff] [blame]12594 { "unique-id", smp_fetch_uniqueid, 0, NULL, SMP_T_STR, SMP_SRC_L4SRV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12595 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12596 { "url32", smp_fetch_url32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12597 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12598 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12599 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]12600 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12601 { "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]12602 { "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]12603 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12604}};
12605
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12606
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12607/************************************************************************/
12608/* All supported converter keywords must be declared here. */
12609/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12610/* Note: must not be declared <const> as its list will be overwritten */
12611static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12612 { "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]12613 { "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]12614 { "capture-req", smp_conv_req_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
12615 { "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]12616 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12617 { NULL, NULL, 0, 0, 0 },
12618}};
12619
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12620
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12621/************************************************************************/
12622/* All supported http-request action keywords must be declared here. */
12623/************************************************************************/
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12624struct action_kw_list http_req_actions = {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12625 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12626 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12627 { "set-method", parse_set_req_line },
12628 { "set-path", parse_set_req_line },
12629 { "set-query", parse_set_req_line },
12630 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]12631 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12632 }
12633};
12634
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12635struct action_kw_list http_res_actions = {
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12636 .kw = {
12637 { "capture", parse_http_res_capture },
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12638 { "set-status", parse_http_set_status },
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12639 { NULL, NULL }
12640 }
12641};
12642
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12643__attribute__((constructor))
12644static void __http_protocol_init(void)
12645{
12646 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]12647 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12648 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12649 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12650 http_res_keywords_register(&http_res_actions);
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12651 cli_register_kw(&cli_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12652}
12653
12654
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]12655/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]12656 * Local variables:
12657 * c-indent-level: 8
12658 * c-basic-offset: 8
12659 * End:
12660 */