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git01.mediatek.com / haproxy / be508f158077cab6ed65581cd0e66d5908cf61da / . / src / proto_http.c
blob: 0be6228bf0111f718d52938fc1dc4db0e073e420 [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>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]42#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]46#include <proto/action.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]47#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]48#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]49#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]50#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]51#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]52#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]53#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]54#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]55#include <proto/filters.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]56#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]57#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]58#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]59#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]60#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]61#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]62#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]63#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]64#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]65#include <proto/server.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]66#include <proto/stream.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]67#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]68#include <proto/task.h>
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]69#include <proto/pattern.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]70#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]71
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]72const char HTTP_100[] =
73 "HTTP/1.1 100 Continue\r\n\r\n";
74
75const struct chunk http_100_chunk = {
76 .str = (char *)&HTTP_100,
77 .len = sizeof(HTTP_100)-1
78};
79
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]80/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]81const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]82 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]84 "Location: "; /* not terminated since it will be concatenated with the URL */
85
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]87 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]88 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]89 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]90 "Location: "; /* not terminated since it will be concatenated with the URL */
91
92/* same as 302 except that the browser MUST retry with the GET method */
93const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]94 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]95 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]96 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]97 "Location: "; /* not terminated since it will be concatenated with the URL */
98
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]99
100/* same as 302 except that the browser MUST retry with the same method */
101const char *HTTP_307 =
102 "HTTP/1.1 307 Temporary Redirect\r\n"
103 "Cache-Control: no-cache\r\n"
104 "Content-length: 0\r\n"
105 "Location: "; /* not terminated since it will be concatenated with the URL */
106
107/* same as 301 except that the browser MUST retry with the same method */
108const char *HTTP_308 =
109 "HTTP/1.1 308 Permanent Redirect\r\n"
110 "Content-length: 0\r\n"
111 "Location: "; /* not terminated since it will be concatenated with the URL */
112
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]113/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
114const char *HTTP_401_fmt =
115 "HTTP/1.0 401 Unauthorized\r\n"
116 "Cache-Control: no-cache\r\n"
117 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]118 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]119 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
120 "\r\n"
121 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
122
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]123const char *HTTP_407_fmt =
124 "HTTP/1.0 407 Unauthorized\r\n"
125 "Cache-Control: no-cache\r\n"
126 "Connection: close\r\n"
127 "Content-Type: text/html\r\n"
128 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
129 "\r\n"
Godbach1f1fae62014-12-17 16:32:05 +0800[diff] [blame]130 "<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]131
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]132
133const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]134 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135 [HTTP_ERR_400] = 400,
136 [HTTP_ERR_403] = 403,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]137 [HTTP_ERR_405] = 405,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]138 [HTTP_ERR_408] = 408,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]139 [HTTP_ERR_429] = 429,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]140 [HTTP_ERR_500] = 500,
141 [HTTP_ERR_502] = 502,
142 [HTTP_ERR_503] = 503,
143 [HTTP_ERR_504] = 504,
144};
145
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]146static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]147 [HTTP_ERR_200] =
148 "HTTP/1.0 200 OK\r\n"
149 "Cache-Control: no-cache\r\n"
150 "Connection: close\r\n"
151 "Content-Type: text/html\r\n"
152 "\r\n"
153 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
154
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]155 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]156 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]157 "Cache-Control: no-cache\r\n"
158 "Connection: close\r\n"
159 "Content-Type: text/html\r\n"
160 "\r\n"
161 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
162
163 [HTTP_ERR_403] =
164 "HTTP/1.0 403 Forbidden\r\n"
165 "Cache-Control: no-cache\r\n"
166 "Connection: close\r\n"
167 "Content-Type: text/html\r\n"
168 "\r\n"
169 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
170
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]171 [HTTP_ERR_405] =
172 "HTTP/1.0 405 Method Not Allowed\r\n"
173 "Cache-Control: no-cache\r\n"
174 "Connection: close\r\n"
175 "Content-Type: text/html\r\n"
176 "\r\n"
177 "<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",
178
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]179 [HTTP_ERR_408] =
180 "HTTP/1.0 408 Request Time-out\r\n"
181 "Cache-Control: no-cache\r\n"
182 "Connection: close\r\n"
183 "Content-Type: text/html\r\n"
184 "\r\n"
185 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
186
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]187 [HTTP_ERR_429] =
188 "HTTP/1.0 429 Too Many Requests\r\n"
189 "Cache-Control: no-cache\r\n"
190 "Connection: close\r\n"
191 "Content-Type: text/html\r\n"
192 "\r\n"
193 "<html><body><h1>429 Too Many Requests</h1>\nYou have sent too many requests in a given amount of time.\n</body></html>\n",
194
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]195 [HTTP_ERR_500] =
196 "HTTP/1.0 500 Server Error\r\n"
197 "Cache-Control: no-cache\r\n"
198 "Connection: close\r\n"
199 "Content-Type: text/html\r\n"
200 "\r\n"
201 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
202
203 [HTTP_ERR_502] =
204 "HTTP/1.0 502 Bad Gateway\r\n"
205 "Cache-Control: no-cache\r\n"
206 "Connection: close\r\n"
207 "Content-Type: text/html\r\n"
208 "\r\n"
209 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
210
211 [HTTP_ERR_503] =
212 "HTTP/1.0 503 Service Unavailable\r\n"
213 "Cache-Control: no-cache\r\n"
214 "Connection: close\r\n"
215 "Content-Type: text/html\r\n"
216 "\r\n"
217 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
218
219 [HTTP_ERR_504] =
220 "HTTP/1.0 504 Gateway Time-out\r\n"
221 "Cache-Control: no-cache\r\n"
222 "Connection: close\r\n"
223 "Content-Type: text/html\r\n"
224 "\r\n"
225 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
226
227};
228
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]229/* status codes available for the stats admin page (strictly 4 chars length) */
230const char *stat_status_codes[STAT_STATUS_SIZE] = {
231 [STAT_STATUS_DENY] = "DENY",
232 [STAT_STATUS_DONE] = "DONE",
233 [STAT_STATUS_ERRP] = "ERRP",
234 [STAT_STATUS_EXCD] = "EXCD",
235 [STAT_STATUS_NONE] = "NONE",
236 [STAT_STATUS_PART] = "PART",
237 [STAT_STATUS_UNKN] = "UNKN",
238};
239
240
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]241/* List head of all known action keywords for "http-request" */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]242struct action_kw_list http_req_keywords = {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]243 .list = LIST_HEAD_INIT(http_req_keywords.list)
244};
245
246/* List head of all known action keywords for "http-response" */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]247struct action_kw_list http_res_keywords = {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]248 .list = LIST_HEAD_INIT(http_res_keywords.list)
249};
250
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]251/* We must put the messages here since GCC cannot initialize consts depending
252 * on strlen().
253 */
254struct chunk http_err_chunks[HTTP_ERR_SIZE];
255
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]256/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
257static struct hdr_ctx static_hdr_ctx;
258
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]259#define FD_SETS_ARE_BITFIELDS
260#ifdef FD_SETS_ARE_BITFIELDS
261/*
262 * This map is used with all the FD_* macros to check whether a particular bit
263 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
264 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
265 * byte should be encoded. Be careful to always pass bytes from 0 to 255
266 * exclusively to the macros.
267 */
268fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
269fd_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]270fd_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]271
272#else
273#error "Check if your OS uses bitfields for fd_sets"
274#endif
275
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]276static 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]277
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]278static int http_msg_forward_body(struct stream *s, struct http_msg *msg);
279static int http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg);
280
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]281/* This function returns a reason associated with the HTTP status.
282 * This function never fails, a message is always returned.
283 */
284const char *get_reason(unsigned int status)
285{
286 switch (status) {
287 case 100: return "Continue";
288 case 101: return "Switching Protocols";
289 case 102: return "Processing";
290 case 200: return "OK";
291 case 201: return "Created";
292 case 202: return "Accepted";
293 case 203: return "Non-Authoritative Information";
294 case 204: return "No Content";
295 case 205: return "Reset Content";
296 case 206: return "Partial Content";
297 case 207: return "Multi-Status";
298 case 210: return "Content Different";
299 case 226: return "IM Used";
300 case 300: return "Multiple Choices";
301 case 301: return "Moved Permanently";
302 case 302: return "Moved Temporarily";
303 case 303: return "See Other";
304 case 304: return "Not Modified";
305 case 305: return "Use Proxy";
306 case 307: return "Temporary Redirect";
307 case 308: return "Permanent Redirect";
308 case 310: return "Too many Redirects";
309 case 400: return "Bad Request";
310 case 401: return "Unauthorized";
311 case 402: return "Payment Required";
312 case 403: return "Forbidden";
313 case 404: return "Not Found";
314 case 405: return "Method Not Allowed";
315 case 406: return "Not Acceptable";
316 case 407: return "Proxy Authentication Required";
317 case 408: return "Request Time-out";
318 case 409: return "Conflict";
319 case 410: return "Gone";
320 case 411: return "Length Required";
321 case 412: return "Precondition Failed";
322 case 413: return "Request Entity Too Large";
323 case 414: return "Request-URI Too Long";
324 case 415: return "Unsupported Media Type";
325 case 416: return "Requested range unsatisfiable";
326 case 417: return "Expectation failed";
327 case 418: return "I'm a teapot";
328 case 422: return "Unprocessable entity";
329 case 423: return "Locked";
330 case 424: return "Method failure";
331 case 425: return "Unordered Collection";
332 case 426: return "Upgrade Required";
333 case 428: return "Precondition Required";
334 case 429: return "Too Many Requests";
335 case 431: return "Request Header Fields Too Large";
336 case 449: return "Retry With";
337 case 450: return "Blocked by Windows Parental Controls";
338 case 451: return "Unavailable For Legal Reasons";
339 case 456: return "Unrecoverable Error";
340 case 499: return "client has closed connection";
341 case 500: return "Internal Server Error";
342 case 501: return "Not Implemented";
343 case 502: return "Bad Gateway ou Proxy Error";
344 case 503: return "Service Unavailable";
345 case 504: return "Gateway Time-out";
346 case 505: return "HTTP Version not supported";
347 case 506: return "Variant also negociate";
348 case 507: return "Insufficient storage";
349 case 508: return "Loop detected";
350 case 509: return "Bandwidth Limit Exceeded";
351 case 510: return "Not extended";
352 case 511: return "Network authentication required";
353 case 520: return "Web server is returning an unknown error";
354 default:
355 switch (status) {
356 case 100 ... 199: return "Informational";
357 case 200 ... 299: return "Success";
358 case 300 ... 399: return "Redirection";
359 case 400 ... 499: return "Client Error";
360 case 500 ... 599: return "Server Error";
361 default: return "Other";
362 }
363 }
364}
365
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]366void init_proto_http()
367{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]368 int i;
369 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]370 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]371
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]372 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
373 if (!http_err_msgs[msg]) {
374 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
375 abort();
376 }
377
378 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
379 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
380 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]381
382 /* initialize the log header encoding map : '{|}"#' should be encoded with
383 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
384 * URL encoding only requires '"', '#' to be encoded as well as non-
385 * printable characters above.
386 */
387 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
388 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]389 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]390 for (i = 0; i < 32; i++) {
391 FD_SET(i, hdr_encode_map);
392 FD_SET(i, url_encode_map);
393 }
394 for (i = 127; i < 256; i++) {
395 FD_SET(i, hdr_encode_map);
396 FD_SET(i, url_encode_map);
397 }
398
399 tmp = "\"#{|}";
400 while (*tmp) {
401 FD_SET(*tmp, hdr_encode_map);
402 tmp++;
403 }
404
405 tmp = "\"#";
406 while (*tmp) {
407 FD_SET(*tmp, url_encode_map);
408 tmp++;
409 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]410
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]411 /* initialize the http header encoding map. The draft httpbis define the
412 * header content as:
413 *
414 * HTTP-message = start-line
415 * *( header-field CRLF )
416 * CRLF
417 * [ message-body ]
418 * header-field = field-name ":" OWS field-value OWS
419 * field-value = *( field-content / obs-fold )
420 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
421 * obs-fold = CRLF 1*( SP / HTAB )
422 * field-vchar = VCHAR / obs-text
423 * VCHAR = %x21-7E
424 * obs-text = %x80-FF
425 *
426 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
427 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
428 * "obs-fold" is volontary forgotten because haproxy remove this.
429 */
430 memset(http_encode_map, 0, sizeof(http_encode_map));
431 for (i = 0x00; i <= 0x08; i++)
432 FD_SET(i, http_encode_map);
433 for (i = 0x0a; i <= 0x1f; i++)
434 FD_SET(i, http_encode_map);
435 FD_SET(0x7f, http_encode_map);
436
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]437 /* memory allocations */
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]438 pool2_http_txn = create_pool("http_txn", sizeof(struct http_txn), MEM_F_SHARED);
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]439 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]440 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]441}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]442
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]443/*
444 * We have 26 list of methods (1 per first letter), each of which can have
445 * up to 3 entries (2 valid, 1 null).
446 */
447struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]448 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]449 int len;
450 const char text[8];
451};
452
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]453const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]454 ['C' - 'A'] = {
455 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
456 },
457 ['D' - 'A'] = {
458 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
459 },
460 ['G' - 'A'] = {
461 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
462 },
463 ['H' - 'A'] = {
464 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
465 },
Christopher Fauletd57ad642015-07-31 14:26:57 +0200[diff] [blame]466 ['O' - 'A'] = {
467 [0] = { .meth = HTTP_METH_OPTIONS , .len=7, .text="OPTIONS" },
468 },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]469 ['P' - 'A'] = {
470 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
471 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
472 },
473 ['T' - 'A'] = {
474 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
475 },
476 /* rest is empty like this :
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]477 * [0] = { .meth = HTTP_METH_OTHER , .len=0, .text="" },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]478 */
479};
480
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]481const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]482 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
483 [HTTP_METH_GET] = { "GET", 3 },
484 [HTTP_METH_HEAD] = { "HEAD", 4 },
485 [HTTP_METH_POST] = { "POST", 4 },
486 [HTTP_METH_PUT] = { "PUT", 3 },
487 [HTTP_METH_DELETE] = { "DELETE", 6 },
488 [HTTP_METH_TRACE] = { "TRACE", 5 },
489 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
490};
491
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]492/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]493 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]494 * RFC2616 for those chars.
495 */
496
497const char http_is_spht[256] = {
498 [' '] = 1, ['\t'] = 1,
499};
500
501const char http_is_crlf[256] = {
502 ['\r'] = 1, ['\n'] = 1,
503};
504
505const char http_is_lws[256] = {
506 [' '] = 1, ['\t'] = 1,
507 ['\r'] = 1, ['\n'] = 1,
508};
509
510const char http_is_sep[256] = {
511 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
512 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
513 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
514 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
515 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
516};
517
518const char http_is_ctl[256] = {
519 [0 ... 31] = 1,
520 [127] = 1,
521};
522
523/*
524 * A token is any ASCII char that is neither a separator nor a CTL char.
525 * Do not overwrite values in assignment since gcc-2.95 will not handle
526 * them correctly. Instead, define every non-CTL char's status.
527 */
528const char http_is_token[256] = {
529 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
530 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
531 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
532 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
533 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
534 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
535 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
536 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
537 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
538 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
539 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
540 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
541 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
542 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
543 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
544 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
545 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
546 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
547 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
548 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
549 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
550 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
551 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
552 ['|'] = 1, ['}'] = 0, ['~'] = 1,
553};
554
555
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]556/*
557 * An http ver_token is any ASCII which can be found in an HTTP version,
558 * which includes 'H', 'T', 'P', '/', '.' and any digit.
559 */
560const char http_is_ver_token[256] = {
561 ['.'] = 1, ['/'] = 1,
562 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
563 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
Thierry FOURNIER63d692c2015-02-28 19:03:56 +0100[diff] [blame]564 ['H'] = 1, ['P'] = 1, ['R'] = 1, ['S'] = 1, ['T'] = 1,
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]565};
566
567
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]568/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]569 * Adds a header and its CRLF at the tail of the message's buffer, just before
570 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]571 * The header is also automatically added to the index <hdr_idx>, and the end
572 * of headers is automatically adjusted. The number of bytes added is returned
573 * on success, otherwise <0 is returned indicating an error.
574 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]575int 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]576{
577 int bytes, len;
578
579 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]580 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]581 if (!bytes)
582 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]583 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]584 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
585}
586
587/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]588 * Adds a header and its CRLF at the tail of the message's buffer, just before
589 * 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]590 * the buffer is only opened and the space reserved, but nothing is copied.
591 * The header is also automatically added to the index <hdr_idx>, and the end
592 * of headers is automatically adjusted. The number of bytes added is returned
593 * on success, otherwise <0 is returned indicating an error.
594 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]595int http_header_add_tail2(struct http_msg *msg,
596 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]597{
598 int bytes;
599
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]600 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]601 if (!bytes)
602 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]603 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]604 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
605}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]606
607/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]608 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
609 * If so, returns the position of the first non-space character relative to
610 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
611 * to return a pointer to the place after the first space. Returns 0 if the
612 * header name does not match. Checks are case-insensitive.
613 */
614int http_header_match2(const char *hdr, const char *end,
615 const char *name, int len)
616{
617 const char *val;
618
619 if (hdr + len >= end)
620 return 0;
621 if (hdr[len] != ':')
622 return 0;
623 if (strncasecmp(hdr, name, len) != 0)
624 return 0;
625 val = hdr + len + 1;
626 while (val < end && HTTP_IS_SPHT(*val))
627 val++;
628 if ((val >= end) && (len + 2 <= end - hdr))
629 return len + 2; /* we may replace starting from second space */
630 return val - hdr;
631}
632
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]633/* Find the first or next occurrence of header <name> in message buffer <sol>
634 * using headers index <idx>, and return it in the <ctx> structure. This
635 * structure holds everything necessary to use the header and find next
636 * occurrence. If its <idx> member is 0, the header is searched from the
637 * beginning. Otherwise, the next occurrence is returned. The function returns
638 * 1 when it finds a value, and 0 when there is no more. It is very similar to
639 * http_find_header2() except that it is designed to work with full-line headers
640 * whose comma is not a delimiter but is part of the syntax. As a special case,
641 * if ctx->val is NULL when searching for a new values of a header, the current
642 * header is rescanned. This allows rescanning after a header deletion.
643 */
644int http_find_full_header2(const char *name, int len,
645 char *sol, struct hdr_idx *idx,
646 struct hdr_ctx *ctx)
647{
648 char *eol, *sov;
649 int cur_idx, old_idx;
650
651 cur_idx = ctx->idx;
652 if (cur_idx) {
653 /* We have previously returned a header, let's search another one */
654 sol = ctx->line;
655 eol = sol + idx->v[cur_idx].len;
656 goto next_hdr;
657 }
658
659 /* first request for this header */
660 sol += hdr_idx_first_pos(idx);
661 old_idx = 0;
662 cur_idx = hdr_idx_first_idx(idx);
663 while (cur_idx) {
664 eol = sol + idx->v[cur_idx].len;
665
666 if (len == 0) {
667 /* No argument was passed, we want any header.
668 * To achieve this, we simply build a fake request. */
669 while (sol + len < eol && sol[len] != ':')
670 len++;
671 name = sol;
672 }
673
674 if ((len < eol - sol) &&
675 (sol[len] == ':') &&
676 (strncasecmp(sol, name, len) == 0)) {
677 ctx->del = len;
678 sov = sol + len + 1;
679 while (sov < eol && http_is_lws[(unsigned char)*sov])
680 sov++;
681
682 ctx->line = sol;
683 ctx->prev = old_idx;
684 ctx->idx = cur_idx;
685 ctx->val = sov - sol;
686 ctx->tws = 0;
687 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
688 eol--;
689 ctx->tws++;
690 }
691 ctx->vlen = eol - sov;
692 return 1;
693 }
694 next_hdr:
695 sol = eol + idx->v[cur_idx].cr + 1;
696 old_idx = cur_idx;
697 cur_idx = idx->v[cur_idx].next;
698 }
699 return 0;
700}
701
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]702/* Find the first or next header field in message buffer <sol> using headers
703 * index <idx>, and return it in the <ctx> structure. This structure holds
704 * everything necessary to use the header and find next occurrence. If its
705 * <idx> member is 0, the first header is retrieved. Otherwise, the next
706 * occurrence is returned. The function returns 1 when it finds a value, and
707 * 0 when there is no more. It is equivalent to http_find_full_header2() with
708 * no header name.
709 */
710int http_find_next_header(char *sol, struct hdr_idx *idx, struct hdr_ctx *ctx)
711{
712 char *eol, *sov;
713 int cur_idx, old_idx;
714 int len;
715
716 cur_idx = ctx->idx;
717 if (cur_idx) {
718 /* We have previously returned a header, let's search another one */
719 sol = ctx->line;
720 eol = sol + idx->v[cur_idx].len;
721 goto next_hdr;
722 }
723
724 /* first request for this header */
725 sol += hdr_idx_first_pos(idx);
726 old_idx = 0;
727 cur_idx = hdr_idx_first_idx(idx);
728 while (cur_idx) {
729 eol = sol + idx->v[cur_idx].len;
730
731 len = 0;
732 while (1) {
733 if (len >= eol - sol)
734 goto next_hdr;
735 if (sol[len] == ':')
736 break;
737 len++;
738 }
739
740 ctx->del = len;
741 sov = sol + len + 1;
742 while (sov < eol && http_is_lws[(unsigned char)*sov])
743 sov++;
744
745 ctx->line = sol;
746 ctx->prev = old_idx;
747 ctx->idx = cur_idx;
748 ctx->val = sov - sol;
749 ctx->tws = 0;
750
751 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
752 eol--;
753 ctx->tws++;
754 }
755 ctx->vlen = eol - sov;
756 return 1;
757
758 next_hdr:
759 sol = eol + idx->v[cur_idx].cr + 1;
760 old_idx = cur_idx;
761 cur_idx = idx->v[cur_idx].next;
762 }
763 return 0;
764}
765
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]766/* Find the end of the header value contained between <s> and <e>. See RFC2616,
767 * par 2.2 for more information. Note that it requires a valid header to return
768 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]769 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]770char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]771{
772 int quoted, qdpair;
773
774 quoted = qdpair = 0;
775 for (; s < e; s++) {
776 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]777 else if (quoted) {
778 if (*s == '\\') qdpair = 1;
779 else if (*s == '"') quoted = 0;
780 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]781 else if (*s == '"') quoted = 1;
782 else if (*s == ',') return s;
783 }
784 return s;
785}
786
787/* Find the first or next occurrence of header <name> in message buffer <sol>
788 * using headers index <idx>, and return it in the <ctx> structure. This
789 * structure holds everything necessary to use the header and find next
790 * occurrence. If its <idx> member is 0, the header is searched from the
791 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]792 * 1 when it finds a value, and 0 when there is no more. It is designed to work
793 * with headers defined as comma-separated lists. As a special case, if ctx->val
794 * is NULL when searching for a new values of a header, the current header is
795 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]796 */
797int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]798 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]799 struct hdr_ctx *ctx)
800{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]801 char *eol, *sov;
802 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]803
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]804 cur_idx = ctx->idx;
805 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]806 /* We have previously returned a value, let's search
807 * another one on the same line.
808 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]809 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]810 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]811 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]812 eol = sol + idx->v[cur_idx].len;
813
814 if (sov >= eol)
815 /* no more values in this header */
816 goto next_hdr;
817
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]818 /* values remaining for this header, skip the comma but save it
819 * for later use (eg: for header deletion).
820 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]821 sov++;
822 while (sov < eol && http_is_lws[(unsigned char)*sov])
823 sov++;
824
825 goto return_hdr;
826 }
827
828 /* first request for this header */
829 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]830 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]831 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]832 while (cur_idx) {
833 eol = sol + idx->v[cur_idx].len;
834
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]835 if (len == 0) {
836 /* No argument was passed, we want any header.
837 * To achieve this, we simply build a fake request. */
838 while (sol + len < eol && sol[len] != ':')
839 len++;
840 name = sol;
841 }
842
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]843 if ((len < eol - sol) &&
844 (sol[len] == ':') &&
845 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]846 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]847 sov = sol + len + 1;
848 while (sov < eol && http_is_lws[(unsigned char)*sov])
849 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]850
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]851 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]852 ctx->prev = old_idx;
853 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]854 ctx->idx = cur_idx;
855 ctx->val = sov - sol;
856
857 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]858 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]859 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]860 eol--;
861 ctx->tws++;
862 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]863 ctx->vlen = eol - sov;
864 return 1;
865 }
866 next_hdr:
867 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]868 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]869 cur_idx = idx->v[cur_idx].next;
870 }
871 return 0;
872}
873
874int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]875 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]876 struct hdr_ctx *ctx)
877{
878 return http_find_header2(name, strlen(name), sol, idx, ctx);
879}
880
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]881/* Remove one value of a header. This only works on a <ctx> returned by one of
882 * the http_find_header functions. The value is removed, as well as surrounding
883 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]884 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]885 * message <msg>. The new index is returned. If it is zero, it means there is
886 * no more header, so any processing may stop. The ctx is always left in a form
887 * that can be handled by http_find_header2() to find next occurrence.
888 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]889int 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]890{
891 int cur_idx = ctx->idx;
892 char *sol = ctx->line;
893 struct hdr_idx_elem *hdr;
894 int delta, skip_comma;
895
896 if (!cur_idx)
897 return 0;
898
899 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]900 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]901 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]902 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]903 http_msg_move_end(msg, delta);
904 idx->used--;
905 hdr->len = 0; /* unused entry */
906 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]907 if (idx->tail == ctx->idx)
908 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]909 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau7c1c2172015-01-07 17:23:50 +0100[diff] [blame]910 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]911 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]912 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]913 return ctx->idx;
914 }
915
916 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]917 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
918 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]919 */
920
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]921 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]922 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]923 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]924 NULL, 0);
925 hdr->len += delta;
926 http_msg_move_end(msg, delta);
927 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]928 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]929 return ctx->idx;
930}
931
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]932/* This function handles a server error at the stream interface level. The
933 * stream interface is assumed to be already in a closed state. An optional
934 * message is copied into the input buffer, and an HTTP status code stored.
935 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]936 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]937 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]938static void http_server_error(struct stream *s, struct stream_interface *si,
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]939 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]940{
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]941 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]942 channel_auto_read(si_oc(si));
943 channel_abort(si_oc(si));
944 channel_auto_close(si_oc(si));
945 channel_erase(si_oc(si));
946 channel_auto_close(si_ic(si));
947 channel_auto_read(si_ic(si));
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]948 if (status > 0 && msg) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]949 s->txn->status = status;
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]950 bo_inject(si_ic(si), msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]951 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]952 if (!(s->flags & SF_ERR_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]953 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]954 if (!(s->flags & SF_FINST_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]955 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]956}
957
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]958/* This function returns the appropriate error location for the given stream
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]959 * and message.
960 */
961
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]962struct chunk *http_error_message(struct stream *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]963{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]964 if (s->be->errmsg[msgnum].str)
965 return &s->be->errmsg[msgnum];
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]966 else if (strm_fe(s)->errmsg[msgnum].str)
967 return &strm_fe(s)->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]968 else
969 return &http_err_chunks[msgnum];
970}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]971
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]972void
973http_reply_and_close(struct stream *s, short status, struct chunk *msg)
974{
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]975 s->txn->flags &= ~TX_WAIT_NEXT_RQ;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]976 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]977 stream_int_retnclose(&s->si[0], msg);
978}
979
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]980/*
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]981 * returns a known method among HTTP_METH_* or HTTP_METH_OTHER for all unknown
982 * ones.
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]983 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]984enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]985{
986 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]987 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]988
989 m = ((unsigned)*str - 'A');
990
991 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]992 for (h = http_methods[m]; h->len > 0; h++) {
993 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]994 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]995 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]996 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]997 };
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]998 }
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]999 return HTTP_METH_OTHER;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1000}
1001
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1002/* Parse the URI from the given transaction (which is assumed to be in request
1003 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
1004 * It is returned otherwise.
1005 */
Thierry FOURNIER3c331782015-09-17 19:33:35 +0200[diff] [blame]1006char *http_get_path(struct http_txn *txn)
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1007{
1008 char *ptr, *end;
1009
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1010 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1011 end = ptr + txn->req.sl.rq.u_l;
1012
1013 if (ptr >= end)
1014 return NULL;
1015
1016 /* RFC2616, par. 5.1.2 :
1017 * Request-URI = "*" | absuri | abspath | authority
1018 */
1019
1020 if (*ptr == '*')
1021 return NULL;
1022
1023 if (isalpha((unsigned char)*ptr)) {
1024 /* this is a scheme as described by RFC3986, par. 3.1 */
1025 ptr++;
1026 while (ptr < end &&
1027 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
1028 ptr++;
1029 /* skip '://' */
1030 if (ptr == end || *ptr++ != ':')
1031 return NULL;
1032 if (ptr == end || *ptr++ != '/')
1033 return NULL;
1034 if (ptr == end || *ptr++ != '/')
1035 return NULL;
1036 }
1037 /* skip [user[:passwd]@]host[:[port]] */
1038
1039 while (ptr < end && *ptr != '/')
1040 ptr++;
1041
1042 if (ptr == end)
1043 return NULL;
1044
1045 /* OK, we got the '/' ! */
1046 return ptr;
1047}
1048
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]1049/* Parse the URI from the given string and look for the "/" beginning the PATH.
1050 * If not found, return NULL. It is returned otherwise.
1051 */
1052static char *
1053http_get_path_from_string(char *str)
1054{
1055 char *ptr = str;
1056
1057 /* RFC2616, par. 5.1.2 :
1058 * Request-URI = "*" | absuri | abspath | authority
1059 */
1060
1061 if (*ptr == '*')
1062 return NULL;
1063
1064 if (isalpha((unsigned char)*ptr)) {
1065 /* this is a scheme as described by RFC3986, par. 3.1 */
1066 ptr++;
1067 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
1068 ptr++;
1069 /* skip '://' */
1070 if (*ptr == '\0' || *ptr++ != ':')
1071 return NULL;
1072 if (*ptr == '\0' || *ptr++ != '/')
1073 return NULL;
1074 if (*ptr == '\0' || *ptr++ != '/')
1075 return NULL;
1076 }
1077 /* skip [user[:passwd]@]host[:[port]] */
1078
1079 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
1080 ptr++;
1081
1082 if (*ptr == '\0' || *ptr == ' ')
1083 return NULL;
1084
1085 /* OK, we got the '/' ! */
1086 return ptr;
1087}
1088
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]1089/* Returns a 302 for a redirectable request that reaches a server working in
1090 * in redirect mode. This may only be called just after the stream interface
1091 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
1092 * follow normal proxy processing. NOTE: this function is designed to support
1093 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1094 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1095void http_perform_server_redirect(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1096{
1097 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1098 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1099 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1100 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1101
1102 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1103 trash.len = strlen(HTTP_302);
1104 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1105
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]1106 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1107
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1108 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1109 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1110 return;
1111
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1112 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1113 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1114 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
1115 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1116 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1117
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1118 /* 3: add the request URI. Since it was already forwarded, we need
1119 * to temporarily rewind the buffer.
1120 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1121 txn = s->txn;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1122 b_rew(s->req.buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1123
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1124 path = http_get_path(txn);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1125 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]1126
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1127 b_adv(s->req.buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1128
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1129 if (!path)
1130 return;
1131
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1132 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1133 return;
1134
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1135 memcpy(trash.str + trash.len, path, len);
1136 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1137
1138 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1139 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
1140 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1141 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1142 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
1143 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1144 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1145
1146 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]1147 si_shutr(si);
1148 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1149 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1150 si->state = SI_ST_CLO;
1151
1152 /* send the message */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1153 http_server_error(s, si, SF_ERR_LOCAL, SF_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1154
1155 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]1156 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]1157 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1158}
1159
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1160/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1161 * that the server side is closed. Note that err_type is actually a
1162 * bitmask, where almost only aborts may be cumulated with other
1163 * values. We consider that aborted operations are more important
1164 * than timeouts or errors due to the fact that nobody else in the
1165 * logs might explain incomplete retries. All others should avoid
1166 * being cumulated. It should normally not be possible to have multiple
1167 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1168 * Note that connection errors appearing on the second request of a keep-alive
1169 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1170 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1171void http_return_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1172{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1173 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1174
1175 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1176 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1177 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1178 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1179 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1180 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1181 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1182 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1183 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1184 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1185 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1186 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1187 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1188 else if (err_type & SI_ET_CONN_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1189 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1190 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1191 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1192 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1193 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_C,
1194 503, (s->flags & SF_SRV_REUSED) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1195 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1196 else if (err_type & SI_ET_CONN_RES)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1197 http_server_error(s, si, SF_ERR_RESOURCE, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1198 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1199 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1200 else /* SI_ET_CONN_OTHER and others */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1201 http_server_error(s, si, SF_ERR_INTERNAL, SF_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1202 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1203}
1204
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1205extern const char sess_term_cond[8];
1206extern const char sess_fin_state[8];
1207extern const char *monthname[12];
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]1208struct pool_head *pool2_http_txn;
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1209struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1210struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1211struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1212
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1213/*
1214 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1215 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1216 */
1217void capture_headers(char *som, struct hdr_idx *idx,
1218 char **cap, struct cap_hdr *cap_hdr)
1219{
1220 char *eol, *sol, *col, *sov;
1221 int cur_idx;
1222 struct cap_hdr *h;
1223 int len;
1224
1225 sol = som + hdr_idx_first_pos(idx);
1226 cur_idx = hdr_idx_first_idx(idx);
1227
1228 while (cur_idx) {
1229 eol = sol + idx->v[cur_idx].len;
1230
1231 col = sol;
1232 while (col < eol && *col != ':')
1233 col++;
1234
1235 sov = col + 1;
1236 while (sov < eol && http_is_lws[(unsigned char)*sov])
1237 sov++;
1238
1239 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1240 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1241 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1242 if (cap[h->index] == NULL)
1243 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1244 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1245
1246 if (cap[h->index] == NULL) {
1247 Alert("HTTP capture : out of memory.\n");
1248 continue;
1249 }
1250
1251 len = eol - sov;
1252 if (len > h->len)
1253 len = h->len;
1254
1255 memcpy(cap[h->index], sov, len);
1256 cap[h->index][len]=0;
1257 }
1258 }
1259 sol = eol + idx->v[cur_idx].cr + 1;
1260 cur_idx = idx->v[cur_idx].next;
1261 }
1262}
1263
1264
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1265/* either we find an LF at <ptr> or we jump to <bad>.
1266 */
1267#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1268
1269/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1270 * otherwise to <http_msg_ood> with <state> set to <st>.
1271 */
1272#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1273 ptr++; \
1274 if (likely(ptr < end)) \
1275 goto good; \
1276 else { \
1277 state = (st); \
1278 goto http_msg_ood; \
1279 } \
1280 } while (0)
1281
1282
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1283/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1284 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1285 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1286 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1287 * will give undefined results.
1288 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1289 * and that msg->sol points to the beginning of the response.
1290 * If a complete line is found (which implies that at least one CR or LF is
1291 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1292 * returned indicating an incomplete line (which does not mean that parts have
1293 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1294 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1295 * upon next call.
1296 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1297 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1298 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1299 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1300 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1301 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1302const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1303 enum ht_state state, const char *ptr, const char *end,
1304 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1305{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1306 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1307
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1308 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1309 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1310 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1311 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1312 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1313
1314 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1315 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1316 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1317 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1318 state = HTTP_MSG_ERROR;
1319 break;
1320
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1321 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1322 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1323 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1324 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1325 goto http_msg_rpcode;
1326 }
1327 if (likely(HTTP_IS_SPHT(*ptr)))
1328 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1329 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1330 state = HTTP_MSG_ERROR;
1331 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1332
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1333 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1334 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1335 if (likely(!HTTP_IS_LWS(*ptr)))
1336 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1337
1338 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1339 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1340 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1341 }
1342
1343 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1344 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1345 http_msg_rsp_reason:
1346 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1347 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1348 msg->sl.st.r_l = 0;
1349 goto http_msg_rpline_eol;
1350
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1351 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1352 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1353 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1354 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1355 goto http_msg_rpreason;
1356 }
1357 if (likely(HTTP_IS_SPHT(*ptr)))
1358 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1359 /* so it's a CR/LF, so there is no reason phrase */
1360 goto http_msg_rsp_reason;
1361
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1362 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1363 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1364 if (likely(!HTTP_IS_CRLF(*ptr)))
1365 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1366 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1367 http_msg_rpline_eol:
1368 /* We have seen the end of line. Note that we do not
1369 * necessarily have the \n yet, but at least we know that we
1370 * have EITHER \r OR \n, otherwise the response would not be
1371 * complete. We can then record the response length and return
1372 * to the caller which will be able to register it.
1373 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1374 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1375 return ptr;
1376
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1377 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1378#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1379 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1380 exit(1);
1381#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1382 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1383 }
1384
1385 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1386 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1387 if (ret_state)
1388 *ret_state = state;
1389 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1390 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1391 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1392}
1393
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1394/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1395 * This function parses a request line between <ptr> and <end>, starting with
1396 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1397 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1398 * will give undefined results.
1399 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1400 * and that msg->sol points to the beginning of the request.
1401 * If a complete line is found (which implies that at least one CR or LF is
1402 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1403 * returned indicating an incomplete line (which does not mean that parts have
1404 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1405 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1406 * upon next call.
1407 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1408 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1409 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1410 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1411 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1412 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1413const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1414 enum ht_state state, const char *ptr, const char *end,
1415 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1416{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1417 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1418
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1419 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1420 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1421 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1422 if (likely(HTTP_IS_TOKEN(*ptr)))
1423 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1424
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1425 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1426 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1427 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1428 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1429
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1430 if (likely(HTTP_IS_CRLF(*ptr))) {
1431 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1432 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1433 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1434 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1435 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1436 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1437 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1438 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1439 msg->sl.rq.v_l = 0;
1440 goto http_msg_rqline_eol;
1441 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1442 state = HTTP_MSG_ERROR;
1443 break;
1444
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1445 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1446 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1447 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1448 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1449 goto http_msg_rquri;
1450 }
1451 if (likely(HTTP_IS_SPHT(*ptr)))
1452 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1453 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1454 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1455
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1456 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1457 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1458 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1459 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1460
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1461 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1462 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1463 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1464 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1465
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1466 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1467 /* non-ASCII chars are forbidden unless option
1468 * accept-invalid-http-request is enabled in the frontend.
1469 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1470 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1471 if (msg->err_pos < -1)
1472 goto invalid_char;
1473 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1474 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1475 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1476 }
1477
1478 if (likely(HTTP_IS_CRLF(*ptr))) {
1479 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1480 goto http_msg_req09_uri_e;
1481 }
1482
1483 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1484 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1485 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1486 state = HTTP_MSG_ERROR;
1487 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1488
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1489 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1490 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1491 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1492 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1493 goto http_msg_rqver;
1494 }
1495 if (likely(HTTP_IS_SPHT(*ptr)))
1496 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1497 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1498 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1499
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1500 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1501 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1502 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1503 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1504
1505 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1506 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1507 http_msg_rqline_eol:
1508 /* We have seen the end of line. Note that we do not
1509 * necessarily have the \n yet, but at least we know that we
1510 * have EITHER \r OR \n, otherwise the request would not be
1511 * complete. We can then record the request length and return
1512 * to the caller which will be able to register it.
1513 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1514 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1515 return ptr;
1516 }
1517
1518 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1519 state = HTTP_MSG_ERROR;
1520 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1521
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1522 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1523#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1524 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1525 exit(1);
1526#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1527 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1528 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1529
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1530 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1531 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1532 if (ret_state)
1533 *ret_state = state;
1534 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1535 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1536 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1537}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1538
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1539/*
1540 * Returns the data from Authorization header. Function may be called more
1541 * than once so data is stored in txn->auth_data. When no header is found
1542 * 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]1543 * searching again for something we are unable to find anyway. However, if
1544 * the result if valid, the cache is not reused because we would risk to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1545 * have the credentials overwritten by another stream in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1546 */
1547
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1548/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1549 * set according to global.tune.bufsize.
1550 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1551char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1552
1553int
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1554get_http_auth(struct stream *s)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1555{
1556
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1557 struct http_txn *txn = s->txn;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1558 struct chunk auth_method;
1559 struct hdr_ctx ctx;
1560 char *h, *p;
1561 int len;
1562
1563#ifdef DEBUG_AUTH
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1564 printf("Auth for stream %p: %d\n", s, txn->auth.method);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1565#endif
1566
1567 if (txn->auth.method == HTTP_AUTH_WRONG)
1568 return 0;
1569
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1570 txn->auth.method = HTTP_AUTH_WRONG;
1571
1572 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1573
1574 if (txn->flags & TX_USE_PX_CONN) {
1575 h = "Proxy-Authorization";
1576 len = strlen(h);
1577 } else {
1578 h = "Authorization";
1579 len = strlen(h);
1580 }
1581
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1582 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]1583 return 0;
1584
1585 h = ctx.line + ctx.val;
1586
1587 p = memchr(h, ' ', ctx.vlen);
1588 if (!p || p == h)
1589 return 0;
1590
1591 chunk_initlen(&auth_method, h, 0, p-h);
1592 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1593
1594 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1595
1596 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1597 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1598
1599 if (len < 0)
1600 return 0;
1601
1602
1603 get_http_auth_buff[len] = '\0';
1604
1605 p = strchr(get_http_auth_buff, ':');
1606
1607 if (!p)
1608 return 0;
1609
1610 txn->auth.user = get_http_auth_buff;
1611 *p = '\0';
1612 txn->auth.pass = p+1;
1613
1614 txn->auth.method = HTTP_AUTH_BASIC;
1615 return 1;
1616 }
1617
1618 return 0;
1619}
1620
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1621
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1622/*
1623 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1624 * depending on the initial msg->msg_state. The caller is responsible for
1625 * ensuring that the message does not wrap. The function can be preempted
1626 * everywhere when data are missing and recalled at the exact same location
1627 * with no information loss. The message may even be realigned between two
1628 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1629 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1630 * fields. Note that msg->sol will be initialized after completing the first
1631 * state, so that none of the msg pointers has to be initialized prior to the
1632 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1633 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1634void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1635{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1636 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1637 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1638 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1639
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1640 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1641 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1642 ptr = buf->p + msg->next;
1643 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1644
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1645 if (unlikely(ptr >= end))
1646 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1647
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1648 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1649 /*
1650 * First, states that are specific to the response only.
1651 * We check them first so that request and headers are
1652 * closer to each other (accessed more often).
1653 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1654 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1655 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1656 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1657 /* we have a start of message, but we have to check
1658 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1659 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1660 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1661 if (unlikely(ptr != buf->p)) {
1662 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1663 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1664 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1665 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1666 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1667 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1668 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1669 hdr_idx_init(idx);
1670 state = HTTP_MSG_RPVER;
1671 goto http_msg_rpver;
1672 }
1673
1674 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1675 goto http_msg_invalid;
1676
1677 if (unlikely(*ptr == '\n'))
1678 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1679 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1680 /* stop here */
1681
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1682 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1683 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1684 EXPECT_LF_HERE(ptr, http_msg_invalid);
1685 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1686 /* stop here */
1687
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1688 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1689 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1690 case HTTP_MSG_RPVER_SP:
1691 case HTTP_MSG_RPCODE:
1692 case HTTP_MSG_RPCODE_SP:
1693 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1694 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1695 state, ptr, end,
1696 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1697 if (unlikely(!ptr))
1698 return;
1699
1700 /* we have a full response and we know that we have either a CR
1701 * or an LF at <ptr>.
1702 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1703 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1704
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1705 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1706 if (likely(*ptr == '\r'))
1707 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1708 goto http_msg_rpline_end;
1709
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1710 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1711 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1712 /* msg->sol must point to the first of CR or LF. */
1713 EXPECT_LF_HERE(ptr, http_msg_invalid);
1714 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1715 /* stop here */
1716
1717 /*
1718 * Second, states that are specific to the request only
1719 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1720 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1721 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1722 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1723 /* we have a start of message, but we have to check
1724 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1725 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1726 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1727 if (likely(ptr != buf->p)) {
1728 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1729 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1730 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1731 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1732 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1733 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1734 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1735 state = HTTP_MSG_RQMETH;
1736 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1737 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1738
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1739 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1740 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1741
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1742 if (unlikely(*ptr == '\n'))
1743 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1744 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1745 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1746
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1747 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1748 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1749 EXPECT_LF_HERE(ptr, http_msg_invalid);
1750 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1751 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1752
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1753 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1754 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1755 case HTTP_MSG_RQMETH_SP:
1756 case HTTP_MSG_RQURI:
1757 case HTTP_MSG_RQURI_SP:
1758 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1759 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1760 state, ptr, end,
1761 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1762 if (unlikely(!ptr))
1763 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1764
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1765 /* we have a full request and we know that we have either a CR
1766 * or an LF at <ptr>.
1767 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1768 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1769
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1770 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1771 if (likely(*ptr == '\r'))
1772 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1773 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1774
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1775 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1776 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1777 /* check for HTTP/0.9 request : no version information available.
1778 * msg->sol must point to the first of CR or LF.
1779 */
1780 if (unlikely(msg->sl.rq.v_l == 0))
1781 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1782
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1783 EXPECT_LF_HERE(ptr, http_msg_invalid);
1784 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1785 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1786
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1787 /*
1788 * Common states below
1789 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1790 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1791 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1792 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1793 if (likely(!HTTP_IS_CRLF(*ptr))) {
1794 goto http_msg_hdr_name;
1795 }
1796
1797 if (likely(*ptr == '\r'))
1798 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1799 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1800
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1801 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1802 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1803 /* assumes msg->sol points to the first char */
1804 if (likely(HTTP_IS_TOKEN(*ptr)))
1805 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1806
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1807 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1808 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1809
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1810 if (likely(msg->err_pos < -1) || *ptr == '\n')
1811 goto http_msg_invalid;
1812
1813 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1814 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1815
1816 /* and we still accept this non-token character */
1817 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1818
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1819 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1820 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1821 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1822 if (likely(HTTP_IS_SPHT(*ptr)))
1823 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1824
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1825 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1826 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1827
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1828 if (likely(!HTTP_IS_CRLF(*ptr))) {
1829 goto http_msg_hdr_val;
1830 }
1831
1832 if (likely(*ptr == '\r'))
1833 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1834 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1835
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1836 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1837 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1838 EXPECT_LF_HERE(ptr, http_msg_invalid);
1839 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1840
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1841 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1842 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1843 if (likely(HTTP_IS_SPHT(*ptr))) {
1844 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1845 for (; buf->p + msg->sov < ptr; msg->sov++)
1846 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1847 goto http_msg_hdr_l1_sp;
1848 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1849 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1850 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1851 goto http_msg_complete_header;
1852
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1853 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1854 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1855 /* assumes msg->sol points to the first char, and msg->sov
1856 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1857 */
1858 if (likely(!HTTP_IS_CRLF(*ptr)))
1859 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1860
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1861 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1862 /* Note: we could also copy eol into ->eoh so that we have the
1863 * real header end in case it ends with lots of LWS, but is this
1864 * really needed ?
1865 */
1866 if (likely(*ptr == '\r'))
1867 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1868 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1869
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1870 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1871 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1872 EXPECT_LF_HERE(ptr, http_msg_invalid);
1873 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1874
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1875 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1876 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1877 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1878 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1879 for (; buf->p + msg->eol < ptr; msg->eol++)
1880 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1881 goto http_msg_hdr_val;
1882 }
1883 http_msg_complete_header:
1884 /*
1885 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1886 * Assumes msg->sol points to the first char, msg->sov points
1887 * to the first character of the value and msg->eol to the
1888 * first CR or LF so we know how the line ends. We insert last
1889 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1890 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1891 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1892 idx, idx->tail) < 0))
1893 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1894
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1895 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1896 if (likely(!HTTP_IS_CRLF(*ptr))) {
1897 goto http_msg_hdr_name;
1898 }
1899
1900 if (likely(*ptr == '\r'))
1901 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1902 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1903
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1904 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1905 http_msg_last_lf:
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1906 /* Assumes msg->sol points to the first of either CR or LF.
1907 * Sets ->sov and ->next to the total header length, ->eoh to
1908 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
1909 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1910 EXPECT_LF_HERE(ptr, http_msg_invalid);
1911 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1912 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1913 msg->eoh = msg->sol;
1914 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1915 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1916 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1917 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1918
1919 case HTTP_MSG_ERROR:
1920 /* this may only happen if we call http_msg_analyser() twice with an error */
1921 break;
1922
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1923 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1924#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1925 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1926 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1927#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1928 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1929 }
1930 http_msg_ood:
1931 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1932 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1933 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1934 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1935
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1936 http_msg_invalid:
1937 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1938 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1939 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1940 return;
1941}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1942
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1943/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1944 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1945 * nothing is done and 1 is returned.
1946 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1947static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1948{
1949 int delta;
1950 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1951 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1952
1953 if (msg->sl.rq.v_l != 0)
1954 return 1;
1955
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1956 /* RFC 1945 allows only GET for HTTP/0.9 requests */
1957 if (txn->meth != HTTP_METH_GET)
1958 return 0;
1959
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1960 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1961 delta = 0;
1962
1963 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1964 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
1965 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1966 }
1967 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1968 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]1969 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1970 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1971 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1972 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1973 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1974 NULL, NULL);
1975 if (unlikely(!cur_end))
1976 return 0;
1977
1978 /* we have a full HTTP/1.0 request now and we know that
1979 * we have either a CR or an LF at <ptr>.
1980 */
1981 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1982 return 1;
1983}
1984
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1985/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1986 * and "keep-alive" values. If we already know that some headers may safely
1987 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1988 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1989 * - 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]1990 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1991 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1992 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1993 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1994 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1995 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1996void 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]1997{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1998 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1999 const char *hdr_val = "Connection";
2000 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2001
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2002 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2003 return;
2004
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2005 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2006 hdr_val = "Proxy-Connection";
2007 hdr_len = 16;
2008 }
2009
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2010 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2011 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2012 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]2013 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2014 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2015 if (to_del & 2)
2016 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2017 else
2018 txn->flags |= TX_CON_KAL_SET;
2019 }
2020 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2021 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2022 if (to_del & 1)
2023 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2024 else
2025 txn->flags |= TX_CON_CLO_SET;
2026 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2027 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
2028 txn->flags |= TX_HDR_CONN_UPG;
2029 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2030 }
2031
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2032 txn->flags |= TX_HDR_CONN_PRS;
2033 return;
2034}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2035
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2036/* Apply desired changes on the Connection: header. Values may be removed and/or
2037 * added depending on the <wanted> flags, which are exclusively composed of
2038 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
2039 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
2040 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2041void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2042{
2043 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2044 const char *hdr_val = "Connection";
2045 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2046
2047 ctx.idx = 0;
2048
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2049
2050 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2051 hdr_val = "Proxy-Connection";
2052 hdr_len = 16;
2053 }
2054
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2055 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2056 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]2057 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2058 if (wanted & TX_CON_KAL_SET)
2059 txn->flags |= TX_CON_KAL_SET;
2060 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2061 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2062 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2063 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2064 if (wanted & TX_CON_CLO_SET)
2065 txn->flags |= TX_CON_CLO_SET;
2066 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2067 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2068 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2069 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2070
2071 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
2072 return;
2073
2074 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
2075 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2076 hdr_val = "Connection: close";
2077 hdr_len = 17;
2078 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2079 hdr_val = "Proxy-Connection: close";
2080 hdr_len = 23;
2081 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2082 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2083 }
2084
2085 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
2086 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2087 hdr_val = "Connection: keep-alive";
2088 hdr_len = 22;
2089 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2090 hdr_val = "Proxy-Connection: keep-alive";
2091 hdr_len = 28;
2092 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2093 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2094 }
2095 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2096}
2097
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2098/* Parse the chunk size at msg->next. Once done, caller should adjust ->next to
2099 * point to the first byte of data after the chunk size, so that we know we can
2100 * forward exactly msg->next bytes. msg->sol contains the exact number of bytes
2101 * forming the chunk size. That way it is always possible to differentiate
2102 * between the start of the body and the start of the data. Return the number
2103 * of byte parsed on success, 0 when some data is missing, <0 on error. Note:
2104 * this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2105 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2106static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2107{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2108 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2109 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2110 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2111 const char *end = buf->data + buf->size;
2112 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2113 unsigned int chunk = 0;
2114
2115 /* The chunk size is in the following form, though we are only
2116 * interested in the size and CRLF :
2117 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
2118 */
2119 while (1) {
2120 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2121 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2122 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2123 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2124 if (c < 0) /* not a hex digit anymore */
2125 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2126 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2127 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]2128 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2129 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2130 chunk = (chunk << 4) + c;
2131 }
2132
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2133 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2134 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2135 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2136
2137 while (http_is_spht[(unsigned char)*ptr]) {
2138 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2139 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2140 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2141 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2142 }
2143
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2144 /* Up to there, we know that at least one byte is present at *ptr. Check
2145 * for the end of chunk size.
2146 */
2147 while (1) {
2148 if (likely(HTTP_IS_CRLF(*ptr))) {
2149 /* we now have a CR or an LF at ptr */
2150 if (likely(*ptr == '\r')) {
2151 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2152 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2153 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2154 return 0;
2155 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2156
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2157 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2158 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2159 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2160 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2161 /* done */
2162 break;
2163 }
2164 else if (*ptr == ';') {
2165 /* chunk extension, ends at next CRLF */
2166 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2167 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2168 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2169 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2170
2171 while (!HTTP_IS_CRLF(*ptr)) {
2172 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2173 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2174 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2175 return 0;
2176 }
2177 /* we have a CRLF now, loop above */
2178 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2179 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2180 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2181 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2182 }
2183
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2184 /* OK we found our CRLF and now <ptr> points to the next byte, which may
2185 * or may not be present. We save the number of bytes parsed into
2186 * msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2187 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2188 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2189 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2190 msg->sol += buf->size;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2191 msg->chunk_len = chunk;
2192 msg->body_len += chunk;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2193 return msg->sol;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2194 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2195 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2196 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2197}
2198
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2199/* This function skips trailers in the buffer associated with HTTP message
2200 * <msg>. The first visited position is msg->next. If the end of the trailers is
2201 * found, the function returns >0. So, the caller can automatically schedul it
2202 * to be forwarded, and switch msg->msg_state to HTTP_MSG_DONE. If not enough
2203 * data are available, the function does not change anything except maybe
2204 * msg->sol if it could parse some lines, and returns zero. If a parse error
2205 * is encountered, the function returns < 0 and does not change anything except
2206 * maybe msg->sol. Note that the message must already be in HTTP_MSG_TRAILERS
2207 * state before calling this function, which implies that all non-trailers data
2208 * have already been scheduled for forwarding, and that msg->next exactly
2209 * matches the length of trailers already parsed and not forwarded. It is also
2210 * important to note that this function is designed to be able to parse wrapped
2211 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2212 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2213static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2214{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2215 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2216
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2217 /* we have msg->next which points to next line. Look for CRLF. But
2218 * first, we reset msg->sol */
2219 msg->sol = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2220 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2221 const char *p1 = NULL, *p2 = NULL;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2222 const char *start = b_ptr(buf, msg->next + msg->sol);
2223 const char *stop = bi_end(buf);
2224 const char *ptr = start;
2225 int bytes = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2226
2227 /* scan current line and stop at LF or CRLF */
2228 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2229 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2230 return 0;
2231
2232 if (*ptr == '\n') {
2233 if (!p1)
2234 p1 = ptr;
2235 p2 = ptr;
2236 break;
2237 }
2238
2239 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2240 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2241 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2242 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2243 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2244 p1 = ptr;
2245 }
2246
2247 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2248 if (ptr >= buf->data + buf->size)
2249 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2250 }
2251
2252 /* after LF; point to beginning of next line */
2253 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2254 if (p2 >= buf->data + buf->size)
2255 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2256
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2257 bytes = p2 - start;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2258 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2259 bytes += buf->size;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2260 msg->sol += bytes;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2261
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2262 /* LF/CRLF at beginning of line => end of trailers at p2.
2263 * Everything was scheduled for forwarding, there's nothing left
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2264 * from this message. */
2265 if (p1 == start)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2266 return 1;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2267
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2268 /* OK, next line then */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2269 }
2270}
2271
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2272/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
2273 * a possible LF alone at the end of a chunk. The caller should adjust msg->next
2274 * in order to include this part into the next forwarding phase. Note that the
2275 * caller must ensure that ->p points to the first byte to parse. It returns
2276 * the number of bytes parsed on success, so the caller can set msg_state to
2277 * HTTP_MSG_CHUNK_SIZE. If not enough data are available, the function does not
2278 * change anything and returns zero. If a parse error is encountered, the
2279 * function returns < 0. Note: this function is designed to parse wrapped CRLF
2280 * at the end of the buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2281 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2282static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2283{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2284 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2285 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2286 int bytes;
2287
2288 /* NB: we'll check data availabilty at the end. It's not a
2289 * problem because whatever we match first will be checked
2290 * against the correct length.
2291 */
2292 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2293 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2294 if (*ptr == '\r') {
2295 bytes++;
2296 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2297 if (ptr >= buf->data + buf->size)
2298 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2299 }
2300
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2301 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2302 return 0;
2303
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2304 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2305 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2306 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2307 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2308 return bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2309}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2310
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2311/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2312 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2313 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2314 * Unparsable qvalues return 1000 as "q=1.000".
2315 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2316int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2317{
2318 int q = 1000;
2319
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2320 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2321 goto out;
2322 q = (*qvalue++ - '0') * 1000;
2323
2324 if (*qvalue++ != '.')
2325 goto out;
2326
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2327 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2328 goto out;
2329 q += (*qvalue++ - '0') * 100;
2330
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2331 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2332 goto out;
2333 q += (*qvalue++ - '0') * 10;
2334
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2335 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2336 goto out;
2337 q += (*qvalue++ - '0') * 1;
2338 out:
2339 if (q > 1000)
2340 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2341 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2342 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2343 return q;
2344}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2345
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2346void 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]2347{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2348 struct proxy *fe = strm_fe(s);
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2349 int tmp = TX_CON_WANT_KAL;
2350
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2351 if (!((fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2352 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2353 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2354 tmp = TX_CON_WANT_TUN;
2355
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2356 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2357 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2358 tmp = TX_CON_WANT_TUN;
2359 }
2360
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2361 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2362 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2363 /* option httpclose + server_close => forceclose */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2364 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2365 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2366 tmp = TX_CON_WANT_CLO;
2367 else
2368 tmp = TX_CON_WANT_SCL;
2369 }
2370
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2371 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2372 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2373 tmp = TX_CON_WANT_CLO;
2374
2375 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2376 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2377
2378 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2379 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2380 /* parse the Connection header and possibly clean it */
2381 int to_del = 0;
2382 if ((msg->flags & HTTP_MSGF_VER_11) ||
2383 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2384 !((fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2385 to_del |= 2; /* remove "keep-alive" */
2386 if (!(msg->flags & HTTP_MSGF_VER_11))
2387 to_del |= 1; /* remove "close" */
2388 http_parse_connection_header(txn, msg, to_del);
2389 }
2390
2391 /* check if client or config asks for explicit close in KAL/SCL */
2392 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2393 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2394 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2395 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2396 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2397 fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2398 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2399}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2400
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2401/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2402 * processing can continue on next analysers, or zero if it either needs more
2403 * data or wants to immediately abort the request (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2404 * 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]2405 * when it has nothing left to do, and may remove any analyser when it wants to
2406 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2407 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2408int http_wait_for_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2409{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2410 /*
2411 * We will parse the partial (or complete) lines.
2412 * We will check the request syntax, and also join multi-line
2413 * headers. An index of all the lines will be elaborated while
2414 * parsing.
2415 *
2416 * For the parsing, we use a 28 states FSM.
2417 *
2418 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2419 * req->buf->p = beginning of request
2420 * req->buf->p + msg->eoh = end of processed headers / start of current one
2421 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2422 * msg->eol = end of current header or line (LF or CRLF)
2423 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2424 *
2425 * 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]2426 * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2427 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2428 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2429 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2430
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2431 int cur_idx;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2432 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2433 struct http_txn *txn = s->txn;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2434 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2435 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2436
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2437 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]2438 now_ms, __FUNCTION__,
2439 s,
2440 req,
2441 req->rex, req->wex,
2442 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2443 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2444 req->analysers);
2445
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2446 /* we're speaking HTTP here, so let's speak HTTP to the client */
2447 s->srv_error = http_return_srv_error;
2448
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2449 /* There's a protected area at the end of the buffer for rewriting
2450 * purposes. We don't want to start to parse the request if the
2451 * protected area is affected, because we may have to move processed
2452 * data later, which is much more complicated.
2453 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2454 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2455 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]2456 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2457 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2458 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2459 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2460 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2461 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2462 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2463 return 0;
2464 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2465 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2466 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2467 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2468 }
2469
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2470 /* Note that we have the same problem with the response ; we
2471 * may want to send a redirect, error or anything which requires
2472 * some spare space. So we'll ensure that we have at least
2473 * maxrewrite bytes available in the response buffer before
2474 * processing that one. This will only affect pipelined
2475 * keep-alive requests.
2476 */
2477 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2478 unlikely(!channel_is_rewritable(&s->res) ||
2479 bi_end(s->res.buf) < b_ptr(s->res.buf, txn->rsp.next) ||
2480 bi_end(s->res.buf) > s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)) {
2481 if (s->res.buf->o) {
2482 if (s->res.flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2483 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2484 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2485 channel_dont_connect(req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2486 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
2487 s->res.flags |= CF_WAKE_WRITE;
2488 s->res.analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2489 return 0;
2490 }
2491 }
2492
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2493 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2494 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2495 }
2496
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2497 /* 1: we might have to print this header in debug mode */
2498 if (unlikely((global.mode & MODE_DEBUG) &&
2499 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]2500 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2501 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2502
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2503 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2504 /* this is a bit complex : in case of error on the request line,
2505 * we know that rq.l is still zero, so we display only the part
2506 * up to the end of the line (truncated by debug_hdr).
2507 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2508 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2509 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2510
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2511 sol += hdr_idx_first_pos(&txn->hdr_idx);
2512 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2513
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2514 while (cur_idx) {
2515 eol = sol + txn->hdr_idx.v[cur_idx].len;
2516 debug_hdr("clihdr", s, sol, eol);
2517 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2518 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2519 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2520 }
2521
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2522
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2523 /*
2524 * Now we quickly check if we have found a full valid request.
2525 * If not so, we check the FD and buffer states before leaving.
2526 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2527 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2528 * requests are checked first. When waiting for a second request
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2529 * on a keep-alive stream, if we encounter and error, close, t/o,
2530 * we note the error in the stream flags but don't set any state.
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2531 * Since the error will be noted there, it will not be counted by
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2532 * process_stream() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2533 * Last, we may increase some tracked counters' http request errors on
2534 * the cases that are deliberately the client's fault. For instance,
2535 * a timeout or connection reset is not counted as an error. However
2536 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2537 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2538
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2539 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2540 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2541 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2542 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2543 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2544 stream_inc_http_req_ctr(s);
2545 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2546 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2547 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2548 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2549
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2550 /* 1: Since we are in header mode, if there's no space
2551 * left for headers, we won't be able to free more
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2552 * later, so the stream will never terminate. We
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2553 * must terminate it now.
2554 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2555 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2556 /* FIXME: check if URI is set and return Status
2557 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2558 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2559 stream_inc_http_req_ctr(s);
2560 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2561 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2562 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2563 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2564 goto return_bad_req;
2565 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2566
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2567 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2568 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2569 if (!(s->flags & SF_ERR_MASK))
2570 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2571
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2572 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2573 goto failed_keep_alive;
2574
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2575 if (sess->fe->options & PR_O_IGNORE_PRB)
2576 goto failed_keep_alive;
2577
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2578 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2579 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2580 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2581 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2582 }
2583
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2584 txn->status = 400;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2585 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2586 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2587 req->analysers &= AN_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2588 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2589 proxy_inc_fe_req_ctr(sess->fe);
2590 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2591 if (sess->listener->counters)
2592 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2593
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2594 if (!(s->flags & SF_FINST_MASK))
2595 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2596 return 0;
2597 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2598
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2599 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2600 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]2601 if (!(s->flags & SF_ERR_MASK))
2602 s->flags |= SF_ERR_CLITO;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2603
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2604 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2605 goto failed_keep_alive;
2606
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2607 if (sess->fe->options & PR_O_IGNORE_PRB)
2608 goto failed_keep_alive;
2609
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2610 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2611 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2612 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2613 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2614 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2615 txn->status = 408;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2616 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2617 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2618 req->analysers &= AN_FLT_END;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2619
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2620 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2621 proxy_inc_fe_req_ctr(sess->fe);
2622 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2623 if (sess->listener->counters)
2624 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2625
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2626 if (!(s->flags & SF_FINST_MASK))
2627 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2628 return 0;
2629 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2630
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2631 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2632 else if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2633 if (!(s->flags & SF_ERR_MASK))
2634 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2635
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2636 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2637 goto failed_keep_alive;
2638
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2639 if (sess->fe->options & PR_O_IGNORE_PRB)
2640 goto failed_keep_alive;
2641
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2642 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2643 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2644 txn->status = 400;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2645 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2646 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2647 req->analysers &= AN_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2648 stream_inc_http_err_ctr(s);
2649 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2650 proxy_inc_fe_req_ctr(sess->fe);
2651 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2652 if (sess->listener->counters)
2653 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2654
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2655 if (!(s->flags & SF_FINST_MASK))
2656 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2657 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2658 }
2659
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2660 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2661 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2662 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2663#ifdef TCP_QUICKACK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2664 if (sess->listener->options & LI_O_NOQUICKACK && req->buf->i &&
2665 objt_conn(sess->origin) && conn_ctrl_ready(__objt_conn(sess->origin))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2666 /* We need more data, we have to re-enable quick-ack in case we
2667 * previously disabled it, otherwise we might cause the client
2668 * to delay next data.
2669 */
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2670 setsockopt(__objt_conn(sess->origin)->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2671 }
2672#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2673
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2674 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2675 /* If the client starts to talk, let's fall back to
2676 * request timeout processing.
2677 */
2678 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2679 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2680 }
2681
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2682 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2683 if (!tick_isset(req->analyse_exp)) {
2684 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2685 (txn->flags & TX_WAIT_NEXT_RQ) &&
2686 tick_isset(s->be->timeout.httpka))
2687 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2688 else
2689 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2690 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2691
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2692 /* we're not ready yet */
2693 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2694
2695 failed_keep_alive:
2696 /* Here we process low-level errors for keep-alive requests. In
2697 * short, if the request is not the first one and it experiences
2698 * a timeout, read error or shutdown, we just silently close so
2699 * that the client can try again.
2700 */
2701 txn->status = 0;
2702 msg->msg_state = HTTP_MSG_RQBEFORE;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2703 req->analysers &= AN_FLT_END;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2704 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2705 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2706 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2707 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2708 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2709 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2710
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2711 /* OK now we have a complete HTTP request with indexed headers. Let's
2712 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2713 * 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]2714 * 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]2715 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2716 * byte after the last LF. msg->sov points to the first byte of data.
2717 * msg->eol cannot be trusted because it may have been left uninitialized
2718 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2719 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2720
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2721 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2722 proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2723
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2724 if (txn->flags & TX_WAIT_NEXT_RQ) {
2725 /* kill the pending keep-alive timeout */
2726 txn->flags &= ~TX_WAIT_NEXT_RQ;
2727 req->analyse_exp = TICK_ETERNITY;
2728 }
2729
2730
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2731 /* Maybe we found in invalid header name while we were configured not
2732 * to block on that, so we have to capture it now.
2733 */
2734 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2735 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2736
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2737 /*
2738 * 1: identify the method
2739 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2740 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2741
2742 /* we can make use of server redirect on GET and HEAD */
2743 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2744 s->flags |= SF_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2745
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2746 /*
2747 * 2: check if the URI matches the monitor_uri.
2748 * We have to do this for every request which gets in, because
2749 * the monitor-uri is defined by the frontend.
2750 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2751 if (unlikely((sess->fe->monitor_uri_len != 0) &&
2752 (sess->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2753 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2754 sess->fe->monitor_uri,
2755 sess->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2756 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2757 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2758 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2759 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2760
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2761 s->flags |= SF_MONITOR;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2762 sess->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2763
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2764 /* Check if we want to fail this monitor request or not */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2765 list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2766 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]2767
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2768 ret = acl_pass(ret);
2769 if (cond->pol == ACL_COND_UNLESS)
2770 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2771
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2772 if (ret) {
2773 /* we fail this request, let's return 503 service unavail */
2774 txn->status = 503;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2775 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_503));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2776 if (!(s->flags & SF_ERR_MASK))
2777 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2778 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2779 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2780 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2781
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2782 /* nothing to fail, let's reply normaly */
2783 txn->status = 200;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2784 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_200));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2785 if (!(s->flags & SF_ERR_MASK))
2786 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2787 goto return_prx_cond;
2788 }
2789
2790 /*
2791 * 3: Maybe we have to copy the original REQURI for the logs ?
2792 * Note: we cannot log anymore if the request has been
2793 * classified as invalid.
2794 */
2795 if (unlikely(s->logs.logwait & LW_REQ)) {
2796 /* we have a complete HTTP request that we must log */
2797 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2798 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2799
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2800 if (urilen >= REQURI_LEN)
2801 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2802 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2803 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2804
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2805 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2806 s->do_log(s);
2807 } else {
2808 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2809 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2810 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2811
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2812 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
2813 * exactly one digit "." one digit. This check may be disabled using
2814 * option accept-invalid-http-request.
2815 */
2816 if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) {
2817 if (msg->sl.rq.v_l != 8) {
2818 msg->err_pos = msg->sl.rq.v;
2819 goto return_bad_req;
2820 }
2821
2822 if (req->buf->p[msg->sl.rq.v + 4] != '/' ||
2823 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 5]) ||
2824 req->buf->p[msg->sl.rq.v + 6] != '.' ||
2825 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 7])) {
2826 msg->err_pos = msg->sl.rq.v + 4;
2827 goto return_bad_req;
2828 }
2829 }
Willy Tarreau13317662015-05-01 13:47:08 +0200[diff] [blame]2830 else {
2831 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
2832 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
2833 goto return_bad_req;
2834 }
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2835
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2836 /* ... and check if the request is HTTP/1.1 or above */
2837 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2838 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2839 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2840 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2841 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2842
2843 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2844 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]2845
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2846 /* if the frontend has "option http-use-proxy-header", we'll check if
2847 * we have what looks like a proxied connection instead of a connection,
2848 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2849 * Note that this is *not* RFC-compliant, however browsers and proxies
2850 * happen to do that despite being non-standard :-(
2851 * We consider that a request not beginning with either '/' or '*' is
2852 * a proxied connection, which covers both "scheme://location" and
2853 * CONNECT ip:port.
2854 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2855 if ((sess->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2856 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2857 txn->flags |= TX_USE_PX_CONN;
2858
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2859 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2860 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2861
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2862 /* 5: we may need to capture headers */
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2863 if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2864 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2865 s->req_cap, sess->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2866
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2867 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
2868 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2869 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2870 * The length of a message body is determined by one of the following
2871 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2872 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2873 * 1. Any response to a HEAD request and any response with a 1xx
2874 * (Informational), 204 (No Content), or 304 (Not Modified) status
2875 * code is always terminated by the first empty line after the
2876 * header fields, regardless of the header fields present in the
2877 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2878 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2879 * 2. Any 2xx (Successful) response to a CONNECT request implies that
2880 * the connection will become a tunnel immediately after the empty
2881 * line that concludes the header fields. A client MUST ignore any
2882 * Content-Length or Transfer-Encoding header fields received in
2883 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2884 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2885 * 3. If a Transfer-Encoding header field is present and the chunked
2886 * transfer coding (Section 4.1) is the final encoding, the message
2887 * body length is determined by reading and decoding the chunked
2888 * data until the transfer coding indicates the data is complete.
2889 *
2890 * If a Transfer-Encoding header field is present in a response and
2891 * the chunked transfer coding is not the final encoding, the
2892 * message body length is determined by reading the connection until
2893 * it is closed by the server. If a Transfer-Encoding header field
2894 * is present in a request and the chunked transfer coding is not
2895 * the final encoding, the message body length cannot be determined
2896 * reliably; the server MUST respond with the 400 (Bad Request)
2897 * status code and then close the connection.
2898 *
2899 * If a message is received with both a Transfer-Encoding and a
2900 * Content-Length header field, the Transfer-Encoding overrides the
2901 * Content-Length. Such a message might indicate an attempt to
2902 * perform request smuggling (Section 9.5) or response splitting
2903 * (Section 9.4) and ought to be handled as an error. A sender MUST
2904 * remove the received Content-Length field prior to forwarding such
2905 * a message downstream.
2906 *
2907 * 4. If a message is received without Transfer-Encoding and with
2908 * either multiple Content-Length header fields having differing
2909 * field-values or a single Content-Length header field having an
2910 * invalid value, then the message framing is invalid and the
2911 * recipient MUST treat it as an unrecoverable error. If this is a
2912 * request message, the server MUST respond with a 400 (Bad Request)
2913 * status code and then close the connection. If this is a response
2914 * message received by a proxy, the proxy MUST close the connection
2915 * to the server, discard the received response, and send a 502 (Bad
2916 * Gateway) response to the client. If this is a response message
2917 * received by a user agent, the user agent MUST close the
2918 * connection to the server and discard the received response.
2919 *
2920 * 5. If a valid Content-Length header field is present without
2921 * Transfer-Encoding, its decimal value defines the expected message
2922 * body length in octets. If the sender closes the connection or
2923 * the recipient times out before the indicated number of octets are
2924 * received, the recipient MUST consider the message to be
2925 * incomplete and close the connection.
2926 *
2927 * 6. If this is a request message and none of the above are true, then
2928 * the message body length is zero (no message body is present).
2929 *
2930 * 7. Otherwise, this is a response message without a declared message
2931 * body length, so the message body length is determined by the
2932 * number of octets received prior to the server closing the
2933 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2934 */
2935
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2936 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2937 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]2938 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2939 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2940 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2941 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2942 /* chunked not last, return badreq */
2943 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2944 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2945 }
2946
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]2947 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2948 ctx.idx = 0;
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]2949 if (msg->flags & HTTP_MSGF_TE_CHNK) {
2950 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
2951 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2952 }
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2953 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]2954 signed long long cl;
2955
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2956 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2957 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2958 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2959 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2960
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2961 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2962 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2963 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2964 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2965
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2966 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2967 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2968 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2969 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2970
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2971 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2972 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2973 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2974 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2975
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2976 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2977 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2978 }
2979
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2980 /* even bodyless requests have a known length */
2981 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2982
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2983 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
2984 * only change if both the request and the config reference something else.
2985 * Option httpclose by itself sets tunnel mode where headers are mangled.
2986 * However, if another mode is set, it will affect it (eg: server-close/
2987 * keep-alive + httpclose = close). Note that we avoid to redo the same work
2988 * if FE and BE have the same settings (common). The method consists in
2989 * checking if options changed between the two calls (implying that either
2990 * one is non-null, or one of them is non-null and we are there for the first
2991 * time.
2992 */
2993 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2994 ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2995 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2996
Willy Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]2997 /* we may have to wait for the request's body */
2998 if ((s->be->options & PR_O_WREQ_BODY) &&
2999 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
3000 req->analysers |= AN_REQ_HTTP_BODY;
3001
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3002 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3003 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3004 req->analyse_exp = TICK_ETERNITY;
3005 return 1;
3006
3007 return_bad_req:
3008 /* We centralize bad requests processing here */
3009 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3010 /* we detected a parsing error. We want to archive this request
3011 * in the dedicated proxy area for later troubleshooting.
3012 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3013 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3014 }
3015
3016 txn->req.msg_state = HTTP_MSG_ERROR;
3017 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3018 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3019
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3020 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3021 if (sess->listener->counters)
3022 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3023
3024 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3025 if (!(s->flags & SF_ERR_MASK))
3026 s->flags |= SF_ERR_PRXCOND;
3027 if (!(s->flags & SF_FINST_MASK))
3028 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3029
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]3030 req->analysers &= AN_FLT_END;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3031 req->analyse_exp = TICK_ETERNITY;
3032 return 0;
3033}
3034
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3035
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3036/* This function prepares an applet to handle the stats. It can deal with the
3037 * "100-continue" expectation, check that admin rules are met for POST requests,
3038 * and program a response message if something was unexpected. It cannot fail
3039 * 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]3040 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3041 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3042 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3043 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3044int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3045{
3046 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3047 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3048 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3049 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3050 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3051 struct uri_auth *uri_auth = s->be->uri_auth;
3052 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3053 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3054
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3055 appctx = si_appctx(si);
3056 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3057 appctx->st1 = appctx->st2 = 0;
3058 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3059 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3060 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3061 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3062
3063 uri = msg->chn->buf->p + msg->sl.rq.u;
3064 lookup = uri + uri_auth->uri_len;
3065
3066 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3067 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3068 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3069 break;
3070 }
3071 }
3072
3073 if (uri_auth->refresh) {
3074 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3075 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3076 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3077 break;
3078 }
3079 }
3080 }
3081
3082 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3083 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3084 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3085 break;
3086 }
3087 }
3088
3089 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3090 if (memcmp(h, ";st=", 4) == 0) {
3091 int i;
3092 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3093 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3094 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3095 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3096 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3097 break;
3098 }
3099 }
3100 break;
3101 }
3102 }
3103
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3104 appctx->ctx.stats.scope_str = 0;
3105 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3106 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3107 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3108 int itx = 0;
3109 const char *h2;
3110 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3111 const char *err;
3112
3113 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3114 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3115 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3116 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3117 itx++;
3118 h++;
3119 }
3120
3121 if (itx > STAT_SCOPE_TXT_MAXLEN)
3122 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3123 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3124
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3125 /* 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]3126 memcpy(scope_txt, h2, itx);
3127 scope_txt[itx] = '\0';
3128 err = invalid_char(scope_txt);
3129 if (err) {
3130 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3131 appctx->ctx.stats.scope_str = 0;
3132 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3133 }
3134 break;
3135 }
3136 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3137
3138 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3139 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3140 int ret = 1;
3141
3142 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3143 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]3144 ret = acl_pass(ret);
3145 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3146 ret = !ret;
3147 }
3148
3149 if (ret) {
3150 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3151 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3152 break;
3153 }
3154 }
3155
3156 /* Was the status page requested with a POST ? */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3157 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3158 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3159 /* we'll need the request body, possibly after sending 100-continue */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3160 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE)
3161 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3162 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3163 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3164 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3165 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3166 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3167 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3168 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3169 else {
3170 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3171 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3172 }
3173
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3174 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3175 return 1;
3176}
3177
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3178/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3179 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3180 */
Thierry FOURNIER7fe75e02015-03-16 12:03:44 +0100[diff] [blame]3181void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3182{
3183#ifdef IP_TOS
3184 if (from.ss_family == AF_INET)
3185 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3186#endif
3187#ifdef IPV6_TCLASS
3188 if (from.ss_family == AF_INET6) {
3189 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
3190 /* v4-mapped addresses need IP_TOS */
3191 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3192 else
3193 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3194 }
3195#endif
3196}
3197
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3198int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3199 const char* name, unsigned int name_len,
3200 const char *str, struct my_regex *re,
3201 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3202{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3203 struct hdr_ctx ctx;
3204 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3205 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3206 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3207 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3208 struct chunk *output = get_trash_chunk();
3209
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3210 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3211
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3212 /* Choose the header browsing function. */
3213 switch (action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3214 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3215 http_find_hdr_func = http_find_header2;
3216 break;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3217 case ACT_HTTP_REPLACE_HDR:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3218 http_find_hdr_func = http_find_full_header2;
3219 break;
3220 default: /* impossible */
3221 return -1;
3222 }
3223
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3224 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
3225 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3226 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3227 char *val = ctx.line + ctx.val;
3228 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3229
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3230 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
3231 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3232
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3233 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3234 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3235 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3236
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3237 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3238
3239 hdr->len += delta;
3240 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3241
3242 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3243 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3244 }
3245
3246 return 0;
3247}
3248
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3249static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3250 const char* name, unsigned int name_len,
3251 struct list *fmt, struct my_regex *re,
3252 int action)
3253{
3254 struct chunk *replace = get_trash_chunk();
3255
3256 replace->len = build_logline(s, replace->str, replace->size, fmt);
3257 if (replace->len >= replace->size - 1)
3258 return -1;
3259
3260 return http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
3261}
3262
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3263/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3264 * transaction <txn>. Returns the verdict of the first rule that prevents
3265 * further processing of the request (auth, deny, ...), and defaults to
3266 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3267 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
3268 * on txn->flags if it encounters a tarpit rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3269 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3270enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3271http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3272{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3273 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3274 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3275 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3276 struct act_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3277 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3278 const char *auth_realm;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3279 int act_flags = 0;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3280
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3281 /* If "the current_rule_list" match the executed rule list, we are in
3282 * resume condition. If a resume is needed it is always in the action
3283 * and never in the ACL or converters. In this case, we initialise the
3284 * current rule, and go to the action execution point.
3285 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3286 if (s->current_rule) {
3287 rule = s->current_rule;
3288 s->current_rule = NULL;
3289 if (s->current_rule_list == rules)
3290 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3291 }
3292 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3293
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3294 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3295
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3296 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3297 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3298 int ret;
3299
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3300 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]3301 ret = acl_pass(ret);
3302
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3303 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3304 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3305
3306 if (!ret) /* condition not matched */
3307 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3308 }
3309
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3310 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3311resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3312 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3313 case ACT_ACTION_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3314 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3315
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3316 case ACT_ACTION_DENY:
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]3317 txn->rule_deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3318 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3319
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3320 case ACT_HTTP_REQ_TARPIT:
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3321 txn->flags |= TX_CLTARPIT;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]3322 txn->rule_deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3323 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3324
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3325 case ACT_HTTP_REQ_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3326 /* Auth might be performed on regular http-req rules as well as on stats */
3327 auth_realm = rule->arg.auth.realm;
3328 if (!auth_realm) {
3329 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3330 auth_realm = STATS_DEFAULT_REALM;
3331 else
3332 auth_realm = px->id;
3333 }
3334 /* send 401/407 depending on whether we use a proxy or not. We still
3335 * count one error, because normal browsing won't significantly
3336 * increase the counter but brute force attempts will.
3337 */
3338 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3339 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3340 http_reply_and_close(s, txn->status, &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3341 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3342 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3343
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3344 case ACT_HTTP_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3345 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3346 return HTTP_RULE_RES_BADREQ;
3347 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3348
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3349 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3350 s->task->nice = rule->arg.nice;
3351 break;
3352
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3353 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3354 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3355 inet_set_tos(cli_conn->t.sock.fd, cli_conn->addr.from, rule->arg.tos);
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3356 break;
3357
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3358 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3359#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3360 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3361 setsockopt(cli_conn->t.sock.fd, SOL_SOCKET, SO_MARK, &rule->arg.mark, sizeof(rule->arg.mark));
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3362#endif
3363 break;
3364
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3365 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3366 s->logs.level = rule->arg.loglevel;
3367 break;
3368
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3369 case ACT_HTTP_REPLACE_HDR:
3370 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3371 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
3372 rule->arg.hdr_add.name_len,
3373 &rule->arg.hdr_add.fmt,
3374 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3375 return HTTP_RULE_RES_BADREQ;
3376 break;
3377
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3378 case ACT_HTTP_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3379 ctx.idx = 0;
3380 /* remove all occurrences of the header */
3381 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3382 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3383 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3384 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3385 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3386
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3387 case ACT_HTTP_SET_HDR:
3388 case ACT_HTTP_ADD_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3389 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3390 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3391 trash.len = rule->arg.hdr_add.name_len;
3392 trash.str[trash.len++] = ':';
3393 trash.str[trash.len++] = ' ';
3394 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3395
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3396 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3397 /* remove all occurrences of the header */
3398 ctx.idx = 0;
3399 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3400 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3401 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3402 }
3403 }
3404
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3405 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3406 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3407
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3408 case ACT_HTTP_DEL_ACL:
3409 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3410 struct pat_ref *ref;
3411 char *key;
3412 int len;
3413
3414 /* collect reference */
3415 ref = pat_ref_lookup(rule->arg.map.ref);
3416 if (!ref)
3417 continue;
3418
3419 /* collect key */
3420 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3421 key = trash.str;
3422 key[len] = '\0';
3423
3424 /* perform update */
3425 /* returned code: 1=ok, 0=ko */
3426 pat_ref_delete(ref, key);
3427
3428 break;
3429 }
3430
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3431 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3432 struct pat_ref *ref;
3433 char *key;
3434 struct chunk *trash_key;
3435 int len;
3436
3437 trash_key = get_trash_chunk();
3438
3439 /* collect reference */
3440 ref = pat_ref_lookup(rule->arg.map.ref);
3441 if (!ref)
3442 continue;
3443
3444 /* collect key */
3445 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3446 key = trash_key->str;
3447 key[len] = '\0';
3448
3449 /* perform update */
3450 /* add entry only if it does not already exist */
3451 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3452 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3453
3454 break;
3455 }
3456
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3457 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3458 struct pat_ref *ref;
3459 char *key, *value;
3460 struct chunk *trash_key, *trash_value;
3461 int len;
3462
3463 trash_key = get_trash_chunk();
3464 trash_value = get_trash_chunk();
3465
3466 /* collect reference */
3467 ref = pat_ref_lookup(rule->arg.map.ref);
3468 if (!ref)
3469 continue;
3470
3471 /* collect key */
3472 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3473 key = trash_key->str;
3474 key[len] = '\0';
3475
3476 /* collect value */
3477 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3478 value = trash_value->str;
3479 value[len] = '\0';
3480
3481 /* perform update */
3482 if (pat_ref_find_elt(ref, key) != NULL)
3483 /* update entry if it exists */
3484 pat_ref_set(ref, key, value, NULL);
3485 else
3486 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3487 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3488
3489 break;
3490 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3491
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3492 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3493 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3494 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3495
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3496 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3497 case ACT_RET_ERR:
3498 case ACT_RET_CONT:
3499 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3500 case ACT_RET_STOP:
3501 return HTTP_RULE_RES_DONE;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3502 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3503 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3504 return HTTP_RULE_RES_YIELD;
3505 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3506 break;
3507
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3508 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3509 /* Note: only the first valid tracking parameter of each
3510 * applies.
3511 */
3512
3513 if (stkctr_entry(&s->stkctr[http_req_trk_idx(rule->action)]) == NULL) {
3514 struct stktable *t;
3515 struct stksess *ts;
3516 struct stktable_key *key;
3517 void *ptr;
3518
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]3519 t = rule->arg.trk_ctr.table.t;
3520 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]3521
3522 if (key && (ts = stktable_get_entry(t, key))) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3523 stream_track_stkctr(&s->stkctr[http_req_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3524
3525 /* let's count a new HTTP request as it's the first time we do it */
3526 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3527 if (ptr)
3528 stktable_data_cast(ptr, http_req_cnt)++;
3529
3530 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3531 if (ptr)
3532 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3533 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3534
3535 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3536 if (sess->fe != s->be)
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3537 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3538 }
3539 }
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3540 break;
3541
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3542 case ACT_HTTP_REQ_SET_SRC:
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3543 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn)) {
3544 struct sample *smp;
3545
Thierry FOURNIERa002dc92015-07-31 08:50:51 +0200[diff] [blame]3546 smp = sample_fetch_as_type(px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, rule->arg.expr, SMP_T_ADDR);
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3547
3548 if (smp) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]3549 if (smp->data.type == SMP_T_IPV4) {
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3550 ((struct sockaddr_in *)&cli_conn->addr.from)->sin_family = AF_INET;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]3551 ((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr = smp->data.u.ipv4.s_addr;
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3552 ((struct sockaddr_in *)&cli_conn->addr.from)->sin_port = 0;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]3553 } else if (smp->data.type == SMP_T_IPV6) {
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3554 ((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_family = AF_INET6;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]3555 memcpy(&((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_addr, &smp->data.u.ipv6, sizeof(struct in6_addr));
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3556 ((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_port = 0;
3557 }
3558 }
3559 }
3560 break;
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3561
3562 /* other flags exists, but normaly, they never be matched. */
3563 default:
3564 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3565 }
3566 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3567
3568 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3569 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3570}
3571
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3572
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3573/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
3574 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
3575 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
3576 * is returned, the process can continue the evaluation of next rule list. If
3577 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
3578 * is returned, it means the operation could not be processed and a server error
3579 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
3580 * deny rule. If *YIELD is returned, the caller must call again the function
3581 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3582 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3583static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3584http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3585{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3586 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3587 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3588 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3589 struct act_rule *rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3590 struct hdr_ctx ctx;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3591 int act_flags = 0;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3592
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3593 /* If "the current_rule_list" match the executed rule list, we are in
3594 * resume condition. If a resume is needed it is always in the action
3595 * and never in the ACL or converters. In this case, we initialise the
3596 * current rule, and go to the action execution point.
3597 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3598 if (s->current_rule) {
3599 rule = s->current_rule;
3600 s->current_rule = NULL;
3601 if (s->current_rule_list == rules)
3602 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3603 }
3604 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3605
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3606 list_for_each_entry(rule, rules, list) {
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3607
3608 /* check optional condition */
3609 if (rule->cond) {
3610 int ret;
3611
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3612 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]3613 ret = acl_pass(ret);
3614
3615 if (rule->cond->pol == ACL_COND_UNLESS)
3616 ret = !ret;
3617
3618 if (!ret) /* condition not matched */
3619 continue;
3620 }
3621
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3622 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3623resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3624 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3625 case ACT_ACTION_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3626 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3627
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3628 case ACT_ACTION_DENY:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3629 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3630 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3631
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3632 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3633 s->task->nice = rule->arg.nice;
3634 break;
3635
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3636 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3637 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3638 inet_set_tos(cli_conn->t.sock.fd, cli_conn->addr.from, rule->arg.tos);
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3639 break;
3640
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3641 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3642#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3643 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3644 setsockopt(cli_conn->t.sock.fd, SOL_SOCKET, SO_MARK, &rule->arg.mark, sizeof(rule->arg.mark));
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3645#endif
3646 break;
3647
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3648 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3649 s->logs.level = rule->arg.loglevel;
3650 break;
3651
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3652 case ACT_HTTP_REPLACE_HDR:
3653 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3654 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3655 rule->arg.hdr_add.name_len,
3656 &rule->arg.hdr_add.fmt,
3657 &rule->arg.hdr_add.re, rule->action))
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3658 return HTTP_RULE_RES_STOP; /* note: we should report an error here */
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3659 break;
3660
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3661 case ACT_HTTP_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3662 ctx.idx = 0;
3663 /* remove all occurrences of the header */
3664 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3665 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3666 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3667 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3668 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3669
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3670 case ACT_HTTP_SET_HDR:
3671 case ACT_HTTP_ADD_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3672 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3673 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3674 trash.len = rule->arg.hdr_add.name_len;
3675 trash.str[trash.len++] = ':';
3676 trash.str[trash.len++] = ' ';
3677 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3678
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3679 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3680 /* remove all occurrences of the header */
3681 ctx.idx = 0;
3682 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3683 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3684 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3685 }
3686 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3687 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3688 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3689
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3690 case ACT_HTTP_DEL_ACL:
3691 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3692 struct pat_ref *ref;
3693 char *key;
3694 int len;
3695
3696 /* collect reference */
3697 ref = pat_ref_lookup(rule->arg.map.ref);
3698 if (!ref)
3699 continue;
3700
3701 /* collect key */
3702 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3703 key = trash.str;
3704 key[len] = '\0';
3705
3706 /* perform update */
3707 /* returned code: 1=ok, 0=ko */
3708 pat_ref_delete(ref, key);
3709
3710 break;
3711 }
3712
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3713 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3714 struct pat_ref *ref;
3715 char *key;
3716 struct chunk *trash_key;
3717 int len;
3718
3719 trash_key = get_trash_chunk();
3720
3721 /* collect reference */
3722 ref = pat_ref_lookup(rule->arg.map.ref);
3723 if (!ref)
3724 continue;
3725
3726 /* collect key */
3727 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3728 key = trash_key->str;
3729 key[len] = '\0';
3730
3731 /* perform update */
3732 /* check if the entry already exists */
3733 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3734 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3735
3736 break;
3737 }
3738
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3739 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3740 struct pat_ref *ref;
3741 char *key, *value;
3742 struct chunk *trash_key, *trash_value;
3743 int len;
3744
3745 trash_key = get_trash_chunk();
3746 trash_value = get_trash_chunk();
3747
3748 /* collect reference */
3749 ref = pat_ref_lookup(rule->arg.map.ref);
3750 if (!ref)
3751 continue;
3752
3753 /* collect key */
3754 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3755 key = trash_key->str;
3756 key[len] = '\0';
3757
3758 /* collect value */
3759 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3760 value = trash_value->str;
3761 value[len] = '\0';
3762
3763 /* perform update */
3764 if (pat_ref_find_elt(ref, key) != NULL)
3765 /* update entry if it exists */
3766 pat_ref_set(ref, key, value, NULL);
3767 else
3768 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3769 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3770
3771 break;
3772 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3773
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3774 case ACT_HTTP_REDIR:
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3775 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3776 return HTTP_RULE_RES_BADREQ;
3777 return HTTP_RULE_RES_DONE;
3778
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3779 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3780 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3781 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3782
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3783 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3784 case ACT_RET_ERR:
3785 case ACT_RET_CONT:
3786 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3787 case ACT_RET_STOP:
3788 return HTTP_RULE_RES_STOP;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3789 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3790 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3791 return HTTP_RULE_RES_YIELD;
3792 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3793 break;
3794
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3795 /* other flags exists, but normaly, they never be matched. */
3796 default:
3797 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3798 }
3799 }
3800
3801 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3802 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3803}
3804
3805
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3806/* Perform an HTTP redirect based on the information in <rule>. The function
3807 * returns non-zero on success, or zero in case of a, irrecoverable error such
3808 * as too large a request to build a valid response.
3809 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3810static 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]3811{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3812 struct http_msg *req = &txn->req;
3813 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3814 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3815 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3816
3817 /* build redirect message */
3818 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3819 case 308:
3820 msg_fmt = HTTP_308;
3821 break;
3822 case 307:
3823 msg_fmt = HTTP_307;
3824 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3825 case 303:
3826 msg_fmt = HTTP_303;
3827 break;
3828 case 301:
3829 msg_fmt = HTTP_301;
3830 break;
3831 case 302:
3832 default:
3833 msg_fmt = HTTP_302;
3834 break;
3835 }
3836
3837 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3838 return 0;
3839
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3840 location = trash.str + trash.len;
3841
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3842 switch(rule->type) {
3843 case REDIRECT_TYPE_SCHEME: {
3844 const char *path;
3845 const char *host;
3846 struct hdr_ctx ctx;
3847 int pathlen;
3848 int hostlen;
3849
3850 host = "";
3851 hostlen = 0;
3852 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3853 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3854 host = ctx.line + ctx.val;
3855 hostlen = ctx.vlen;
3856 }
3857
3858 path = http_get_path(txn);
3859 /* build message using path */
3860 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3861 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]3862 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3863 int qs = 0;
3864 while (qs < pathlen) {
3865 if (path[qs] == '?') {
3866 pathlen = qs;
3867 break;
3868 }
3869 qs++;
3870 }
3871 }
3872 } else {
3873 path = "/";
3874 pathlen = 1;
3875 }
3876
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3877 if (rule->rdr_str) { /* this is an old "redirect" rule */
3878 /* check if we can add scheme + "://" + host + path */
3879 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3880 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3881
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3882 /* add scheme */
3883 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3884 trash.len += rule->rdr_len;
3885 }
3886 else {
3887 /* add scheme with executing log format */
3888 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3889
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3890 /* check if we can add scheme + "://" + host + path */
3891 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3892 return 0;
3893 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3894 /* add "://" */
3895 memcpy(trash.str + trash.len, "://", 3);
3896 trash.len += 3;
3897
3898 /* add host */
3899 memcpy(trash.str + trash.len, host, hostlen);
3900 trash.len += hostlen;
3901
3902 /* add path */
3903 memcpy(trash.str + trash.len, path, pathlen);
3904 trash.len += pathlen;
3905
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3906 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3907 if (trash.len && trash.str[trash.len - 1] != '/' &&
3908 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3909 if (trash.len > trash.size - 5)
3910 return 0;
3911 trash.str[trash.len] = '/';
3912 trash.len++;
3913 }
3914
3915 break;
3916 }
3917 case REDIRECT_TYPE_PREFIX: {
3918 const char *path;
3919 int pathlen;
3920
3921 path = http_get_path(txn);
3922 /* build message using path */
3923 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3924 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]3925 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3926 int qs = 0;
3927 while (qs < pathlen) {
3928 if (path[qs] == '?') {
3929 pathlen = qs;
3930 break;
3931 }
3932 qs++;
3933 }
3934 }
3935 } else {
3936 path = "/";
3937 pathlen = 1;
3938 }
3939
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3940 if (rule->rdr_str) { /* this is an old "redirect" rule */
3941 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3942 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3943
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3944 /* add prefix. Note that if prefix == "/", we don't want to
3945 * add anything, otherwise it makes it hard for the user to
3946 * configure a self-redirection.
3947 */
3948 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3949 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3950 trash.len += rule->rdr_len;
3951 }
3952 }
3953 else {
3954 /* add prefix with executing log format */
3955 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3956
3957 /* Check length */
3958 if (trash.len + pathlen > trash.size - 4)
3959 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3960 }
3961
3962 /* add path */
3963 memcpy(trash.str + trash.len, path, pathlen);
3964 trash.len += pathlen;
3965
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3966 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3967 if (trash.len && trash.str[trash.len - 1] != '/' &&
3968 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3969 if (trash.len > trash.size - 5)
3970 return 0;
3971 trash.str[trash.len] = '/';
3972 trash.len++;
3973 }
3974
3975 break;
3976 }
3977 case REDIRECT_TYPE_LOCATION:
3978 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3979 if (rule->rdr_str) { /* this is an old "redirect" rule */
3980 if (trash.len + rule->rdr_len > trash.size - 4)
3981 return 0;
3982
3983 /* add location */
3984 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3985 trash.len += rule->rdr_len;
3986 }
3987 else {
3988 /* add location with executing log format */
3989 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3990
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3991 /* Check left length */
3992 if (trash.len > trash.size - 4)
3993 return 0;
3994 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3995 break;
3996 }
3997
3998 if (rule->cookie_len) {
3999 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
4000 trash.len += 14;
4001 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
4002 trash.len += rule->cookie_len;
4003 memcpy(trash.str + trash.len, "\r\n", 2);
4004 trash.len += 2;
4005 }
4006
4007 /* add end of headers and the keep-alive/close status.
4008 * We may choose to set keep-alive if the Location begins
4009 * with a slash, because the client will come back to the
4010 * same server.
4011 */
4012 txn->status = rule->code;
4013 /* let's log the request time */
4014 s->logs.tv_request = now;
4015
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4016 if (*location == '/' &&
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4017 (req->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau2de8a502015-05-28 17:23:54 +0200[diff] [blame]4018 ((!(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]4019 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4020 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4021 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4022 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4023 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4024 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
4025 trash.len += 30;
4026 } else {
4027 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
4028 trash.len += 24;
4029 }
4030 }
4031 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
4032 trash.len += 4;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]4033 FLT_STRM_CB(s, flt_http_reply(s, txn->status, &trash));
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4034 bo_inject(res->chn, trash.str, trash.len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4035 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4036 bi_fast_delete(req->chn->buf, req->sov);
4037 req->next -= req->sov;
4038 req->sov = 0;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4039 s->req.analysers = AN_REQ_HTTP_XFER_BODY | (s->req.analysers & AN_FLT_END);
4040 s->res.analysers = AN_RES_HTTP_XFER_BODY | (s->req.analysers & AN_FLT_END);
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4041 req->msg_state = HTTP_MSG_CLOSED;
4042 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]4043 /* Trim any possible response */
4044 res->chn->buf->i = 0;
4045 res->next = res->sov = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4046 } else {
4047 /* keep-alive not possible */
4048 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4049 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4050 trash.len += 29;
4051 } else {
4052 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
4053 trash.len += 23;
4054 }
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4055 http_reply_and_close(s, txn->status, &trash);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4056 req->chn->analysers &= AN_FLT_END;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4057 }
4058
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4059 if (!(s->flags & SF_ERR_MASK))
4060 s->flags |= SF_ERR_LOCAL;
4061 if (!(s->flags & SF_FINST_MASK))
4062 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4063
4064 return 1;
4065}
4066
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4067/* This stream analyser runs all HTTP request processing which is common to
4068 * frontends and backends, which means blocking ACLs, filters, connection-close,
4069 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4070 * 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]4071 * either needs more data or wants to immediately abort the request (eg: deny,
4072 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4073 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4074int 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]4075{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4076 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4077 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4078 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4079 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4080 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4081 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4082
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4083 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4084 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4085 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4086 }
4087
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4088 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]4089 now_ms, __FUNCTION__,
4090 s,
4091 req,
4092 req->rex, req->wex,
4093 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4094 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4095 req->analysers);
4096
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4097 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4098 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4099
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4100 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4101 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4102 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4103
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4104 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4105 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4106 goto return_prx_yield;
4107
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4108 case HTTP_RULE_RES_CONT:
4109 case HTTP_RULE_RES_STOP: /* nothing to do */
4110 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4111
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4112 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4113 if (txn->flags & TX_CLTARPIT)
4114 goto tarpit;
4115 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4116
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4117 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4118 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4119
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4120 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4121 goto done;
4122
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4123 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4124 goto return_bad_req;
4125 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4126 }
4127
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4128 /* OK at this stage, we know that the request was accepted according to
4129 * the http-request rules, we can check for the stats. Note that the
4130 * URI is detected *before* the req* rules in order not to be affected
4131 * by a possible reqrep, while they are processed *after* so that a
4132 * reqdeny can still block them. This clearly needs to change in 1.6!
4133 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4134 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4135 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4136 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4137 txn->status = 500;
4138 s->logs.tv_request = now;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4139 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4140
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4141 if (!(s->flags & SF_ERR_MASK))
4142 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4143 goto return_prx_cond;
4144 }
4145
4146 /* parse the whole stats request and extract the relevant information */
4147 http_handle_stats(s, req);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4148 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4149 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4150
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4151 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4152 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4153
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4154 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4155 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4156 }
4157
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4158 /* evaluate the req* rules except reqadd */
4159 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4160 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4161 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4162
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4163 if (txn->flags & TX_CLDENY)
4164 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4165
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4166 if (txn->flags & TX_CLTARPIT)
4167 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4168 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4169
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4170 /* add request headers from the rule sets in the same order */
4171 list_for_each_entry(wl, &px->req_add, list) {
4172 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4173 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]4174 ret = acl_pass(ret);
4175 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4176 ret = !ret;
4177 if (!ret)
4178 continue;
4179 }
4180
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4181 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4182 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4183 }
4184
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4185
4186 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4187 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4188 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4189 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4190 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4191
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4192 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4193 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4194 if (!(s->flags & SF_FINST_MASK))
4195 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4196
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4197 /* enable the minimally required analyzers to handle keep-alive and compression on the HTTP response */
Christopher Faulet309c6412015-12-02 09:57:32 +0100[diff] [blame]4198 req->analysers &= (AN_REQ_HTTP_BODY | AN_FLT_HTTP_HDRS | AN_FLT_END);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4199 req->analysers &= ~AN_FLT_XFER_DATA;
4200 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4201 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4202 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4203
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4204 /* check whether we have some ACLs set to redirect this request */
4205 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4206 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4207 int ret;
4208
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4209 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]4210 ret = acl_pass(ret);
4211 if (rule->cond->pol == ACL_COND_UNLESS)
4212 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4213 if (!ret)
4214 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4215 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4216 if (!http_apply_redirect_rule(rule, s, txn))
4217 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4218 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4219 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4220
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4221 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4222 * If this happens, then the data will not come immediately, so we must
4223 * send all what we have without waiting. Note that due to the small gain
4224 * 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]4225 * 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]4226 * itself once used.
4227 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4228 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4229
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4230 done: /* done with this analyser, continue with next ones that the calling
4231 * points will have set, if any.
4232 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4233 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4234 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4235 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4236 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4237
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4238 tarpit:
4239 /* When a connection is tarpitted, we use the tarpit timeout,
4240 * which may be the same as the connect timeout if unspecified.
4241 * If unset, then set it to zero because we really want it to
4242 * eventually expire. We build the tarpit as an analyser.
4243 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4244 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4245
4246 /* wipe the request out so that we can drop the connection early
4247 * if the client closes first.
4248 */
4249 channel_dont_connect(req);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4250 req->analysers &= AN_FLT_END; /* remove switching rules etc... */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4251 req->analysers |= AN_REQ_HTTP_TARPIT;
4252 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4253 if (!req->analyse_exp)
4254 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4255 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4256 sess->fe->fe_counters.denied_req++;
4257 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4258 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4259 if (sess->listener->counters)
4260 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4261 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4262
4263 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4264 txn->flags |= TX_CLDENY;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4265 txn->status = http_err_codes[txn->rule_deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4266 s->logs.tv_request = now;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4267 http_reply_and_close(s, txn->status, http_error_message(s, txn->rule_deny_status));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4268 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4269 sess->fe->fe_counters.denied_req++;
4270 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4271 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4272 if (sess->listener->counters)
4273 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4274 goto return_prx_cond;
4275
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4276 return_bad_req:
4277 /* We centralize bad requests processing here */
4278 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4279 /* we detected a parsing error. We want to archive this request
4280 * in the dedicated proxy area for later troubleshooting.
4281 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4282 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4283 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4284
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4285 txn->req.msg_state = HTTP_MSG_ERROR;
4286 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4287 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4288
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4289 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4290 if (sess->listener->counters)
4291 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4292
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4293 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4294 if (!(s->flags & SF_ERR_MASK))
4295 s->flags |= SF_ERR_PRXCOND;
4296 if (!(s->flags & SF_FINST_MASK))
4297 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4298
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4299 req->analysers &= AN_FLT_END;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4300 req->analyse_exp = TICK_ETERNITY;
4301 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4302
4303 return_prx_yield:
4304 channel_dont_connect(req);
4305 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4306}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4307
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4308/* This function performs all the processing enabled for the current request.
4309 * It returns 1 if the processing can continue on next analysers, or zero if it
4310 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4311 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4312 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4313int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4314{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4315 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4316 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4317 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4318 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4319
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4320 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4321 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4322 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4323 return 0;
4324 }
4325
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4326 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]4327 now_ms, __FUNCTION__,
4328 s,
4329 req,
4330 req->rex, req->wex,
4331 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4332 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4333 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4334
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4335 /*
4336 * Right now, we know that we have processed the entire headers
4337 * and that unwanted requests have been filtered out. We can do
4338 * whatever we want with the remaining request. Also, now we
4339 * may have separate values for ->fe, ->be.
4340 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4341
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4342 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4343 * If HTTP PROXY is set we simply get remote server address parsing
4344 * incoming request. Note that this requires that a connection is
4345 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4346 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4347 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4348 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4349 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4350
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4351 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau973a5422015-08-05 21:47:23 +0200[diff] [blame]4352 if (unlikely((conn = si_alloc_conn(&s->si[1])) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4353 txn->req.msg_state = HTTP_MSG_ERROR;
4354 txn->status = 500;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4355 req->analysers &= AN_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4356 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4357
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4358 if (!(s->flags & SF_ERR_MASK))
4359 s->flags |= SF_ERR_RESOURCE;
4360 if (!(s->flags & SF_FINST_MASK))
4361 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4362
4363 return 0;
4364 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4365
4366 path = http_get_path(txn);
4367 url2sa(req->buf->p + msg->sl.rq.u,
4368 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4369 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4370 /* if the path was found, we have to remove everything between
4371 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4372 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4373 * u_l characters by a single "/".
4374 */
4375 if (path) {
4376 char *cur_ptr = req->buf->p;
4377 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4378 int delta;
4379
4380 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4381 http_msg_move_end(&txn->req, delta);
4382 cur_end += delta;
4383 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4384 goto return_bad_req;
4385 }
4386 else {
4387 char *cur_ptr = req->buf->p;
4388 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4389 int delta;
4390
4391 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4392 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4393 http_msg_move_end(&txn->req, delta);
4394 cur_end += delta;
4395 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4396 goto return_bad_req;
4397 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4398 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4399
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4400 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4401 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4402 * Note that doing so might move headers in the request, but
4403 * the fields will stay coherent and the URI will not move.
4404 * This should only be performed in the backend.
4405 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]4406 if ((s->be->cookie_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4407 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4408 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4409
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4410 /* add unique-id if "header-unique-id" is specified */
4411
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4412 if (!LIST_ISEMPTY(&sess->fe->format_unique_id)) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4413 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4414 goto return_bad_req;
4415 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4416 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4417 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4418
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4419 if (sess->fe->header_unique_id && s->unique_id) {
4420 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4421 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4422 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4423 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]4424 goto return_bad_req;
4425 }
4426
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4427 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4428 * 9: add X-Forwarded-For if either the frontend or the backend
4429 * asks for it.
4430 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4431 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4432 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4433 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4434 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4435 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]4436 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4437 /* The header is set to be added only if none is present
4438 * and we found it, so don't do anything.
4439 */
4440 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4441 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4442 /* Add an X-Forwarded-For header unless the source IP is
4443 * in the 'except' network range.
4444 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4445 if ((!sess->fe->except_mask.s_addr ||
4446 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4447 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4448 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4449 (((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]4450 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4451 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4452 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4453 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4454
4455 /* Note: we rely on the backend to get the header name to be used for
4456 * x-forwarded-for, because the header is really meant for the backends.
4457 * However, if the backend did not specify any option, we have to rely
4458 * on the frontend's header name.
4459 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4460 if (s->be->fwdfor_hdr_len) {
4461 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4462 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4463 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4464 len = sess->fe->fwdfor_hdr_len;
4465 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4466 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4467 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]4468
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4469 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]4470 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4471 }
4472 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4473 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4474 /* FIXME: for the sake of completeness, we should also support
4475 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4476 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4477 int len;
4478 char pn[INET6_ADDRSTRLEN];
4479 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4480 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4481 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4482
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4483 /* Note: we rely on the backend to get the header name to be used for
4484 * x-forwarded-for, because the header is really meant for the backends.
4485 * However, if the backend did not specify any option, we have to rely
4486 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4487 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4488 if (s->be->fwdfor_hdr_len) {
4489 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4490 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4491 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4492 len = sess->fe->fwdfor_hdr_len;
4493 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4494 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4495 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4496
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4497 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]4498 goto return_bad_req;
4499 }
4500 }
4501
4502 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4503 * 10: add X-Original-To if either the frontend or the backend
4504 * asks for it.
4505 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4506 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4507
4508 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4509 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4510 /* Add an X-Original-To header unless the destination IP is
4511 * in the 'except' network range.
4512 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4513 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4514
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4515 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4516 ((!sess->fe->except_mask_to.s_addr ||
4517 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4518 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4519 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4520 (((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]4521 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4522 int len;
4523 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4524 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4525
4526 /* Note: we rely on the backend to get the header name to be used for
4527 * x-original-to, because the header is really meant for the backends.
4528 * However, if the backend did not specify any option, we have to rely
4529 * on the frontend's header name.
4530 */
4531 if (s->be->orgto_hdr_len) {
4532 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4533 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4534 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4535 len = sess->fe->orgto_hdr_len;
4536 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4537 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4538 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]4539
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4540 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]4541 goto return_bad_req;
4542 }
4543 }
4544 }
4545
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4546 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4547 * If an "Upgrade" token is found, the header is left untouched in order not to have
4548 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4549 * "Upgrade" is present in the Connection header.
4550 */
4551 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4552 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4553 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4554 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4555 unsigned int want_flags = 0;
4556
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4557 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4558 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4559 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4560 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4561 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4562 want_flags |= TX_CON_CLO_SET;
4563 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4564 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4565 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4566 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4567 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4568 want_flags |= TX_CON_KAL_SET;
4569 }
4570
4571 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4572 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4573 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4574
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4575
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4576 /* If we have no server assigned yet and we're balancing on url_param
4577 * with a POST request, we may be interested in checking the body for
4578 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4579 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4580 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4581 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4582 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4583 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4584 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4585 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4586
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4587 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4588 req->analysers &= ~AN_FLT_XFER_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4589 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4590#ifdef TCP_QUICKACK
4591 /* We expect some data from the client. Unless we know for sure
4592 * we already have a full request, we have to re-enable quick-ack
4593 * in case we previously disabled it, otherwise we might cause
4594 * the client to delay further data.
4595 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4596 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4597 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4598 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4599 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4600 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4601#endif
4602 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4603
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4604 /*************************************************************
4605 * OK, that's finished for the headers. We have done what we *
4606 * could. Let's switch to the DATA state. *
4607 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4608 req->analyse_exp = TICK_ETERNITY;
4609 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4610
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4611 /* if the server closes the connection, we want to immediately react
4612 * and close the socket to save packets and syscalls.
4613 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4614 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4615 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4616
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4617 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4618 /* OK let's go on with the BODY now */
4619 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4620
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4621 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4622 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4623 /* we detected a parsing error. We want to archive this request
4624 * in the dedicated proxy area for later troubleshooting.
4625 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4626 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4627 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4628
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4629 txn->req.msg_state = HTTP_MSG_ERROR;
4630 txn->status = 400;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4631 req->analysers &= AN_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4632 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4633
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4634 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4635 if (sess->listener->counters)
4636 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4637
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4638 if (!(s->flags & SF_ERR_MASK))
4639 s->flags |= SF_ERR_PRXCOND;
4640 if (!(s->flags & SF_FINST_MASK))
4641 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4642 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4643}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4644
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4645/* This function is an analyser which processes the HTTP tarpit. It always
4646 * returns zero, at the beginning because it prevents any other processing
4647 * from occurring, and at the end because it terminates the request.
4648 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4649int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4650{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4651 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4652
4653 /* This connection is being tarpitted. The CLIENT side has
4654 * already set the connect expiration date to the right
4655 * timeout. We just have to check that the client is still
4656 * there and that the timeout has not expired.
4657 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4658 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4659 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4660 !tick_is_expired(req->analyse_exp, now_ms))
4661 return 0;
4662
4663 /* We will set the queue timer to the time spent, just for
4664 * logging purposes. We fake a 500 server error, so that the
4665 * attacker will not suspect his connection has been tarpitted.
4666 * It will not cause trouble to the logs because we can exclude
4667 * the tarpitted connections by filtering on the 'PT' status flags.
4668 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4669 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4670
4671 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4672 if (!(req->flags & CF_READ_ERROR))
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4673 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4674
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4675 req->analysers &= AN_FLT_END;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4676 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4677
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4678 if (!(s->flags & SF_ERR_MASK))
4679 s->flags |= SF_ERR_PRXCOND;
4680 if (!(s->flags & SF_FINST_MASK))
4681 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4682 return 0;
4683}
4684
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4685/* This function is an analyser which waits for the HTTP request body. It waits
4686 * for either the buffer to be full, or the full advertised contents to have
4687 * reached the buffer. It must only be called after the standard HTTP request
4688 * processing has occurred, because it expects the request to be parsed and will
4689 * look for the Expect header. It may send a 100-Continue interim response. It
4690 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4691 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4692 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4693 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4694int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4695{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4696 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4697 struct http_txn *txn = s->txn;
4698 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4699
4700 /* We have to parse the HTTP request body to find any required data.
4701 * "balance url_param check_post" should have been the only way to get
4702 * into this. We were brought here after HTTP header analysis, so all
4703 * related structures are ready.
4704 */
4705
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4706 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4707 /* This is the first call */
4708 if (msg->msg_state < HTTP_MSG_BODY)
4709 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4710
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4711 if (msg->msg_state < HTTP_MSG_100_SENT) {
4712 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4713 * send an HTTP/1.1 100 Continue intermediate response.
4714 */
4715 if (msg->flags & HTTP_MSGF_VER_11) {
4716 struct hdr_ctx ctx;
4717 ctx.idx = 0;
4718 /* Expect is allowed in 1.1, look for it */
4719 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4720 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4721 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4722 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4723 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4724 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4725 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4726
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4727 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4728 * req->buf->p still points to the beginning of the message. We
4729 * must save the body in msg->next because it survives buffer
4730 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4731 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4732 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4733
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4734 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4735 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4736 else
4737 msg->msg_state = HTTP_MSG_DATA;
4738 }
4739
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4740 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4741 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4742 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4743 goto missing_data;
4744
4745 /* OK we have everything we need now */
4746 goto http_end;
4747 }
4748
4749 /* OK here we're parsing a chunked-encoded message */
4750
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4751 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4752 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4753 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4754 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4755 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4756 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4757
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4758 if (!ret)
4759 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4760 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4761 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4762 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4763 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]4764 msg->next += ret;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4765 msg->msg_state = msg->chunk_len ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4766 }
4767
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4768 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4769 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4770 * for at least a whole chunk or the whole content length bytes after
4771 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4772 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4773 if (msg->msg_state == HTTP_MSG_TRAILERS)
4774 goto http_end;
4775
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4776 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4777 goto http_end;
4778
4779 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4780 /* we get here if we need to wait for more data. If the buffer is full,
4781 * we have the maximum we can expect.
4782 */
4783 if (buffer_full(req->buf, global.tune.maxrewrite))
4784 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4785
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4786 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4787 txn->status = 408;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4788 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4789
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4790 if (!(s->flags & SF_ERR_MASK))
4791 s->flags |= SF_ERR_CLITO;
4792 if (!(s->flags & SF_FINST_MASK))
4793 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4794 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4795 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4796
4797 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4798 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4799 /* Not enough data. We'll re-use the http-request
4800 * timeout here. Ideally, we should set the timeout
4801 * relative to the accept() date. We just set the
4802 * request timeout once at the beginning of the
4803 * request.
4804 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4805 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4806 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4807 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4808 return 0;
4809 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4810
4811 http_end:
4812 /* The situation will not evolve, so let's give up on the analysis. */
4813 s->logs.tv_request = now; /* update the request timer to reflect full request */
4814 req->analysers &= ~an_bit;
4815 req->analyse_exp = TICK_ETERNITY;
4816 return 1;
4817
4818 return_bad_req: /* let's centralize all bad requests */
4819 txn->req.msg_state = HTTP_MSG_ERROR;
4820 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4821 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4822
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4823 if (!(s->flags & SF_ERR_MASK))
4824 s->flags |= SF_ERR_PRXCOND;
4825 if (!(s->flags & SF_FINST_MASK))
4826 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4827
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4828 return_err_msg:
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4829 req->analysers &= AN_FLT_END;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4830 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4831 if (sess->listener->counters)
4832 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4833 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4834}
4835
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4836/* send a server's name with an outgoing request over an established connection.
4837 * Note: this function is designed to be called once the request has been scheduled
4838 * for being forwarded. This is the reason why it rewinds the buffer before
4839 * proceeding.
4840 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4841int 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]4842
4843 struct hdr_ctx ctx;
4844
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4845 char *hdr_name = be->server_id_hdr_name;
4846 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4847 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4848 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4849 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4850
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4851 ctx.idx = 0;
4852
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4853 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4854 if (old_o) {
4855 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4856 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4857 txn->req.next += old_o;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4858 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4859 }
4860
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4861 old_i = chn->buf->i;
4862 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]4863 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4864 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4865 }
4866
4867 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4868 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4869 memcpy(hdr_val, hdr_name, hdr_name_len);
4870 hdr_val += hdr_name_len;
4871 *hdr_val++ = ':';
4872 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4873 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4874 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]4875
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4876 if (old_o) {
4877 /* If this was a forwarded request, we must readjust the amount of
4878 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4879 * variations. Note that the current state is >= HTTP_MSG_BODY,
4880 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4881 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4882 old_o += chn->buf->i - old_i;
4883 b_adv(chn->buf, old_o);
4884 txn->req.next -= old_o;
4885 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4886 }
4887
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4888 return 0;
4889}
4890
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4891/* Terminate current transaction and prepare a new one. This is very tricky
4892 * right now but it works.
4893 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4894void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4895{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4896 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]4897 struct proxy *fe = strm_fe(s);
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4898 struct proxy *be = s->be;
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4899 struct connection *srv_conn;
4900 struct server *srv;
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]4901 unsigned int prev_flags = s->txn->flags;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4902
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4903 /* FIXME: We need a more portable way of releasing a backend's and a
4904 * server's connections. We need a safer way to reinitialize buffer
4905 * flags. We also need a more accurate method for computing per-request
4906 * data.
4907 */
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4908 srv_conn = objt_conn(s->si[1].end);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4909
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4910 /* unless we're doing keep-alive, we want to quickly close the connection
4911 * to the server.
4912 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4913 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4914 !si_conn_ready(&s->si[1])) {
4915 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4916 si_shutr(&s->si[1]);
4917 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4918 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4919
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4920 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4921 be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4922 if (unlikely(s->srv_conn))
4923 sess_change_server(s, NULL);
4924 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4925
4926 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4927 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4928
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4929 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4930 int n;
4931
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4932 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4933 if (n < 1 || n > 5)
4934 n = 0;
4935
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4936 if (fe->mode == PR_MODE_HTTP) {
4937 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4938 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4939 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4940 (be->mode == PR_MODE_HTTP)) {
4941 be->be_counters.p.http.rsp[n]++;
4942 be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4943 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4944 }
4945
4946 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4947 s->logs.bytes_in -= s->req.buf->i;
4948 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4949
4950 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4951 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4952 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4953 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4954 s->do_log(s);
4955 }
4956
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]4957 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4958 stream_stop_content_counters(s);
4959 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]4960
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4961 s->logs.accept_date = date; /* user-visible date for logging */
4962 s->logs.tv_accept = now; /* corrected date for internal use */
4963 tv_zero(&s->logs.tv_request);
4964 s->logs.t_queue = -1;
4965 s->logs.t_connect = -1;
4966 s->logs.t_data = -1;
4967 s->logs.t_close = 0;
4968 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4969 s->logs.srv_queue_size = 0; /* we will get this number soon */
4970
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4971 s->logs.bytes_in = s->req.total = s->req.buf->i;
4972 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4973
4974 if (s->pend_pos)
4975 pendconn_free(s->pend_pos);
4976
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4977 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4978 if (s->flags & SF_CURR_SESS) {
4979 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4980 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4981 }
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4982 if (may_dequeue_tasks(objt_server(s->target), be))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4983 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4984 }
4985
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4986 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4987
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4988 /* only release our endpoint if we don't intend to reuse the
4989 * connection.
4990 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4991 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4992 !si_conn_ready(&s->si[1])) {
4993 si_release_endpoint(&s->si[1]);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4994 srv_conn = NULL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4995 }
4996
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4997 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
4998 s->si[1].err_type = SI_ET_NONE;
4999 s->si[1].conn_retries = 0; /* used for logging too */
5000 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5001 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]5002 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);
5003 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]5004 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5005 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5006 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5007
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5008 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5009 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5010 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5011
5012 if (prev_status == 401 || prev_status == 407) {
5013 /* In HTTP keep-alive mode, if we receive a 401, we still have
5014 * a chance of being able to send the visitor again to the same
5015 * server over the same connection. This is required by some
5016 * broken protocols such as NTLM, and anyway whenever there is
5017 * an opportunity for sending the challenge to the proper place,
5018 * it's better to do it (at least it helps with debugging).
5019 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5020 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreaubd99d582015-09-02 10:40:43 +0200[diff] [blame]5021 if (srv_conn)
5022 srv_conn->flags |= CO_FL_PRIVATE;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5023 }
5024
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5025 /* Never ever allow to reuse a connection from a non-reuse backend */
5026 if (srv_conn && (be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
5027 srv_conn->flags |= CO_FL_PRIVATE;
5028
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5029 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5030 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5031
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5032 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5033 s->req.flags |= CF_NEVER_WAIT;
5034 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5035 }
5036
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5037 /* if the request buffer is not empty, it means we're
5038 * about to process another request, so send pending
5039 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5040 * Just don't do this if the buffer is close to be full,
5041 * because the request will wait for it to flush a little
5042 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5043 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5044 if (s->req.buf->i) {
5045 if (s->res.buf->o &&
5046 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5047 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5048 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5049 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5050
Willy Tarreau714ea782015-11-25 20:11:11 +0100[diff] [blame]5051 /* we're removing the analysers, we MUST re-enable events detection.
5052 * We don't enable close on the response channel since it's either
5053 * already closed, or in keep-alive with an idle connection handler.
5054 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5055 channel_auto_read(&s->req);
5056 channel_auto_close(&s->req);
5057 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5058
Willy Tarreau1c59bd52015-11-02 20:20:11 +0100[diff] [blame]5059 /* we're in keep-alive with an idle connection, monitor it if not already done */
5060 if (srv_conn && LIST_ISEMPTY(&srv_conn->list)) {
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5061 srv = objt_server(srv_conn->target);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5062 if (!srv)
5063 si_idle_conn(&s->si[1], NULL);
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5064 else if (srv_conn->flags & CO_FL_PRIVATE)
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5065 si_idle_conn(&s->si[1], &srv->priv_conns);
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5066 else if (prev_flags & TX_NOT_FIRST)
5067 /* note: we check the request, not the connection, but
5068 * this is valid for strategies SAFE and AGGR, and in
5069 * case of ALWS, we don't care anyway.
5070 */
5071 si_idle_conn(&s->si[1], &srv->safe_conns);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5072 else
5073 si_idle_conn(&s->si[1], &srv->idle_conns);
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5074 }
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5075
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5076 if (HAS_FILTERS(s)) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5077 s->req.analysers &= AN_FLT_END;
5078 s->res.analysers &= AN_FLT_END;
5079 }
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5080 else {
5081 s->req.analysers = strm_li(s) ? strm_li(s)->analysers : 0;
5082 s->res.analysers = 0;
5083 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5084}
5085
5086
5087/* This function updates the request state machine according to the response
5088 * state machine and buffer flags. It returns 1 if it changes anything (flag
5089 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5090 * it is only used to find when a request/response couple is complete. Both
5091 * this function and its equivalent should loop until both return zero. It
5092 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5093 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5094int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5095{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5096 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5097 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5098 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5099 unsigned int old_state = txn->req.msg_state;
5100
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5101 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5102 return 0;
5103
5104 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5105 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5106 * We can shut the read side unless we want to abort_on_close,
5107 * or we have a POST request. The issue with POST requests is
5108 * that some browsers still send a CRLF after the request, and
5109 * this CRLF must be read so that it does not remain in the kernel
5110 * buffers, otherwise a close could cause an RST on some systems
5111 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5112 * Note that if we're using keep-alive on the client side, we'd
5113 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5114 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5115 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5116 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5117 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5118 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5119 !(s->be->options & PR_O_ABRT_CLOSE) &&
5120 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5121 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5122
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5123 /* if the server closes the connection, we want to immediately react
5124 * and close the socket to save packets and syscalls.
5125 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5126 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5127
Willy Tarreau7f876a12015-11-18 11:59:55 +0100[diff] [blame]5128 /* In any case we've finished parsing the request so we must
5129 * disable Nagle when sending data because 1) we're not going
5130 * to shut this side, and 2) the server is waiting for us to
5131 * send pending data.
5132 */
5133 chn->flags |= CF_NEVER_WAIT;
5134
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5135 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5136 goto wait_other_side;
5137
5138 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5139 /* The server has not finished to respond, so we
5140 * don't want to move in order not to upset it.
5141 */
5142 goto wait_other_side;
5143 }
5144
5145 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5146 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5147 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5148 txn->req.msg_state = HTTP_MSG_TUNNEL;
5149 goto wait_other_side;
5150 }
5151
5152 /* When we get here, it means that both the request and the
5153 * response have finished receiving. Depending on the connection
5154 * mode, we'll have to wait for the last bytes to leave in either
5155 * direction, and sometimes for a close to be effective.
5156 */
5157
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5158 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5159 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5160 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5161 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5162 }
5163 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5164 /* Option forceclose is set, or either side wants to close,
5165 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5166 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5167 * once both states are CLOSED.
5168 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5169 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5170 channel_shutr_now(chn);
5171 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5172 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5173 }
5174 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5175 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5176 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5177 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5178 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5179 channel_auto_read(chn);
5180 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5181 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5182 }
5183
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5184 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5185 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5186 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5187
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5188 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5189 txn->req.msg_state = HTTP_MSG_CLOSING;
5190 goto http_msg_closing;
5191 }
5192 else {
5193 txn->req.msg_state = HTTP_MSG_CLOSED;
5194 goto http_msg_closed;
5195 }
5196 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5197 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5198 }
5199
5200 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5201 http_msg_closing:
5202 /* nothing else to forward, just waiting for the output buffer
5203 * to be empty and for the shutw_now to take effect.
5204 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5205 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5206 txn->req.msg_state = HTTP_MSG_CLOSED;
5207 goto http_msg_closed;
5208 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5209 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5210 txn->req.msg_state = HTTP_MSG_ERROR;
5211 goto wait_other_side;
5212 }
5213 }
5214
5215 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5216 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5217 /* see above in MSG_DONE why we only do this in these states */
5218 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5219 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5220 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5221 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5222 goto wait_other_side;
5223 }
5224
5225 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5226 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5227}
5228
5229
5230/* This function updates the response state machine according to the request
5231 * state machine and buffer flags. It returns 1 if it changes anything (flag
5232 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5233 * it is only used to find when a request/response couple is complete. Both
5234 * this function and its equivalent should loop until both return zero. It
5235 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5236 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5237int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5238{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5239 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5240 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5241 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5242 unsigned int old_state = txn->rsp.msg_state;
5243
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5244 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5245 return 0;
5246
5247 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5248 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5249 * still monitor the server connection for a possible close
5250 * while the request is being uploaded, so we don't disable
5251 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5252 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5253 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5254
5255 if (txn->req.msg_state == HTTP_MSG_ERROR)
5256 goto wait_other_side;
5257
5258 if (txn->req.msg_state < HTTP_MSG_DONE) {
5259 /* The client seems to still be sending data, probably
5260 * because we got an error response during an upload.
5261 * We have the choice of either breaking the connection
5262 * or letting it pass through. Let's do the later.
5263 */
5264 goto wait_other_side;
5265 }
5266
5267 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5268 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5269 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5270 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5271 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5272 goto wait_other_side;
5273 }
5274
5275 /* When we get here, it means that both the request and the
5276 * response have finished receiving. Depending on the connection
5277 * mode, we'll have to wait for the last bytes to leave in either
5278 * direction, and sometimes for a close to be effective.
5279 */
5280
5281 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5282 /* Server-close mode : shut read and wait for the request
5283 * side to close its output buffer. The caller will detect
5284 * when we're in DONE and the other is in CLOSED and will
5285 * catch that for the final cleanup.
5286 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5287 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5288 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5289 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5290 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5291 /* Option forceclose is set, or either side wants to close,
5292 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5293 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5294 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5295 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5296 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5297 channel_shutr_now(chn);
5298 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5299 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5300 }
5301 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5302 /* The last possible modes are keep-alive and tunnel. Tunnel will
5303 * need to forward remaining data. Keep-alive will need to monitor
5304 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5305 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5306 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5307 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5308 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5309 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5310 }
5311
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5312 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5313 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5314 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5315 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5316 goto http_msg_closing;
5317 }
5318 else {
5319 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5320 goto http_msg_closed;
5321 }
5322 }
5323 goto wait_other_side;
5324 }
5325
5326 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5327 http_msg_closing:
5328 /* nothing else to forward, just waiting for the output buffer
5329 * to be empty and for the shutw_now to take effect.
5330 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5331 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5332 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5333 goto http_msg_closed;
5334 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5335 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5336 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5337 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5338 if (objt_server(s->target))
5339 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5340 goto wait_other_side;
5341 }
5342 }
5343
5344 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5345 http_msg_closed:
5346 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5347 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5348 channel_auto_close(chn);
5349 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5350 goto wait_other_side;
5351 }
5352
5353 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5354 /* We force the response to leave immediately if we're waiting for the
5355 * other side, since there is no pending shutdown to push it out.
5356 */
5357 if (!channel_is_empty(chn))
5358 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5359 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5360}
5361
5362
5363/* Resync the request and response state machines. Return 1 if either state
5364 * changes.
5365 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5366int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5367{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5368 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5369 int old_req_state = txn->req.msg_state;
5370 int old_res_state = txn->rsp.msg_state;
5371
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5372 http_sync_req_state(s);
5373 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5374 if (!http_sync_res_state(s))
5375 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5376 if (!http_sync_req_state(s))
5377 break;
5378 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5379
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5380 /* OK, both state machines agree on a compatible state.
5381 * There are a few cases we're interested in :
5382 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5383 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5384 * directions, so let's simply disable both analysers.
5385 * - HTTP_MSG_CLOSED on the response only means we must abort the
5386 * request.
5387 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5388 * with server-close mode means we've completed one request and we
5389 * must re-initialize the server connection.
5390 */
5391
5392 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5393 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5394 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5395 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5396 s->req.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5397 channel_auto_close(&s->req);
5398 channel_auto_read(&s->req);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5399 s->res.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5400 channel_auto_close(&s->res);
5401 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5402 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5403 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5404 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5405 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5406 txn->req.msg_state == HTTP_MSG_ERROR) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5407 s->res.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5408 channel_auto_close(&s->res);
5409 channel_auto_read(&s->res);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5410 s->req.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5411 channel_abort(&s->req);
5412 channel_auto_close(&s->req);
5413 channel_auto_read(&s->req);
5414 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5415 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5416 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5417 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5418 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5419 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5420 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5421 /* server-close/keep-alive: terminate this transaction,
5422 * possibly killing the server connection and reinitialize
5423 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5424 */
5425 http_end_txn_clean_session(s);
5426 }
5427
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5428 return txn->req.msg_state != old_req_state ||
5429 txn->rsp.msg_state != old_res_state;
5430}
5431
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5432/* This function is an analyser which forwards request body (including chunk
5433 * sizes if any). It is called as soon as we must forward, even if we forward
5434 * zero byte. The only situation where it must not be called is when we're in
5435 * tunnel mode and we want to forward till the close. It's used both to forward
5436 * remaining data and to resync after end of body. It expects the msg_state to
5437 * 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]5438 * 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]5439 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5440 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5441 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5442int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5443{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5444 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5445 struct http_txn *txn = s->txn;
5446 struct http_msg *msg = &s->txn->req;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5447 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5448
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5449 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5450 return 0;
5451
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5452 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]5453 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5454 /* Output closed while we were sending data. We must abort and
5455 * wake the other side up.
5456 */
5457 msg->msg_state = HTTP_MSG_ERROR;
5458 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5459 return 1;
5460 }
5461
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5462 /* Note that we don't have to send 100-continue back because we don't
5463 * need the data to complete our job, and it's up to the server to
5464 * decide whether to return 100, 417 or anything else in return of
5465 * an "Expect: 100-continue" header.
5466 */
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5467 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5468 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
5469 ? HTTP_MSG_CHUNK_SIZE
5470 : HTTP_MSG_DATA);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5471
5472 /* TODO/filters: when http-buffer-request option is set or if a
5473 * rule on url_param exists, the first chunk size could be
5474 * already parsed. In that case, msg->next is after the chunk
5475 * size (including the CRLF after the size). So this case should
5476 * be handled to */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5477 }
5478
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5479 /* Some post-connect processing might want us to refrain from starting to
5480 * forward data. Currently, the only reason for this is "balance url_param"
5481 * whichs need to parse/process the request after we've enabled forwarding.
5482 */
5483 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5484 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5485 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5486 req->flags |= CF_WAKE_CONNECT;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5487 goto missing_data_or_waiting;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5488 }
5489 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5490 }
5491
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5492 /* in most states, we should abort in case of early close */
5493 channel_auto_close(req);
5494
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5495 if (req->to_forward) {
5496 /* We can't process the buffer's contents yet */
5497 req->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5498 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5499 }
5500
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5501 if (msg->msg_state < HTTP_MSG_DONE) {
5502 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
5503 ? http_msg_forward_chunked_body(s, msg)
5504 : http_msg_forward_body(s, msg));
5505 if (!ret)
5506 goto missing_data_or_waiting;
5507 if (ret < 0)
5508 goto return_bad_req;
5509 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5510
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5511 /* other states, DONE...TUNNEL */
5512 /* we don't want to forward closes on DONE except in tunnel mode. */
5513 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5514 channel_dont_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5515
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5516 ret = msg->msg_state;
5517 if (http_resync_states(s)) {
5518 /* some state changes occurred, maybe the analyser
5519 * was disabled too. */
5520 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5521 if (req->flags & CF_SHUTW) {
5522 /* request errors are most likely due to the
5523 * server aborting the transfer. */
5524 goto aborted_xfer;
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5525 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5526 if (msg->err_pos >= 0)
5527 http_capture_bad_message(&sess->fe->invalid_req, s, msg, ret, s->be);
5528 goto return_bad_req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5529 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5530 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5531 }
5532
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5533 /* If "option abortonclose" is set on the backend, we want to monitor
5534 * the client's connection and forward any shutdown notification to the
5535 * server, which will decide whether to close or to go on processing the
5536 * request. We only do that in tunnel mode, and not in other modes since
5537 * it can be abused to exhaust source ports. */
5538 if (s->be->options & PR_O_ABRT_CLOSE) {
5539 channel_auto_read(req);
5540 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5541 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5542 s->si[1].flags |= SI_FL_NOLINGER;
5543 channel_auto_close(req);
5544 }
5545 else if (s->txn->meth == HTTP_METH_POST) {
5546 /* POST requests may require to read extra CRLF sent by broken
5547 * browsers and which could cause an RST to be sent upon close
5548 * on some systems (eg: Linux). */
5549 channel_auto_read(req);
5550 }
5551 return 0;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5552
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5553 missing_data_or_waiting:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5554 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5555 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5556 if (!(s->flags & SF_ERR_MASK))
5557 s->flags |= SF_ERR_CLICL;
5558 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5559 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5560 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5561 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5562 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5563 }
5564
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5565 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5566 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5567 if (objt_server(s->target))
5568 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5569
5570 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5571 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5572
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5573 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5574 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5575 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5576
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5577 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5578 * 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]5579 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5580 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5581 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5582
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5583 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5584 * 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]5585 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5586 * modes are already handled by the stream sock layer. We must not do
5587 * this in content-length mode because it could present the MSG_MORE
5588 * flag with the last block of forwarded data, which would cause an
5589 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5590 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5591 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5592 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5593
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5594 return 0;
5595
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5596 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5597 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5598 if (sess->listener->counters)
5599 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5600
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5601 return_bad_req_stats_ok:
5602 txn->req.msg_state = HTTP_MSG_ERROR;
5603 if (txn->status) {
5604 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5605 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5606 } else {
5607 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5608 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5609 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5610 req->analysers &= AN_FLT_END;
5611 s->res.analysers &= AN_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5612
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5613 if (!(s->flags & SF_ERR_MASK))
5614 s->flags |= SF_ERR_PRXCOND;
5615 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5616 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5617 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5618 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5619 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5620 }
5621 return 0;
5622
5623 aborted_xfer:
5624 txn->req.msg_state = HTTP_MSG_ERROR;
5625 if (txn->status) {
5626 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5627 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5628 } else {
5629 txn->status = 502;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5630 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5631 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5632 req->analysers &= AN_FLT_END;
5633 s->res.analysers &= AN_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5634
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5635 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5636 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5637 if (objt_server(s->target))
5638 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5639
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5640 if (!(s->flags & SF_ERR_MASK))
5641 s->flags |= SF_ERR_SRVCL;
5642 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5643 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5644 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5645 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5646 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5647 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5648 return 0;
5649}
5650
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5651/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5652 * processing can continue on next analysers, or zero if it either needs more
5653 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5654 * 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]5655 * when it has nothing left to do, and may remove any analyser when it wants to
5656 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5657 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5658int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5659{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5660 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5661 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5662 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5663 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5664 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5665 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5666 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5667
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5668 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]5669 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5670 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5671 rep,
5672 rep->rex, rep->wex,
5673 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5674 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5675 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5676
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5677 /*
5678 * Now parse the partial (or complete) lines.
5679 * We will check the response syntax, and also join multi-line
5680 * headers. An index of all the lines will be elaborated while
5681 * parsing.
5682 *
5683 * For the parsing, we use a 28 states FSM.
5684 *
5685 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5686 * rep->buf->p = beginning of response
5687 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5688 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5689 * msg->eol = end of current header or line (LF or CRLF)
5690 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5691 */
5692
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5693 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5694 /* There's a protected area at the end of the buffer for rewriting
5695 * purposes. We don't want to start to parse the request if the
5696 * protected area is affected, because we may have to move processed
5697 * data later, which is much more complicated.
5698 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5699 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5700 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5701 /* some data has still not left the buffer, wake us once that's done */
5702 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5703 goto abort_response;
5704 channel_dont_close(rep);
5705 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5706 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5707 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5708 }
5709
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5710 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5711 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5712 buffer_slow_realign(rep->buf);
5713
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5714 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5715 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5716 }
5717
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5718 /* 1: we might have to print this header in debug mode */
5719 if (unlikely((global.mode & MODE_DEBUG) &&
5720 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5721 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5722 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5723
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5724 sol = rep->buf->p;
5725 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5726 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5727
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5728 sol += hdr_idx_first_pos(&txn->hdr_idx);
5729 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5730
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5731 while (cur_idx) {
5732 eol = sol + txn->hdr_idx.v[cur_idx].len;
5733 debug_hdr("srvhdr", s, sol, eol);
5734 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5735 cur_idx = txn->hdr_idx.v[cur_idx].next;
5736 }
5737 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5738
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5739 /*
5740 * Now we quickly check if we have found a full valid response.
5741 * If not so, we check the FD and buffer states before leaving.
5742 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5743 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5744 * responses are checked first.
5745 *
5746 * Depending on whether the client is still there or not, we
5747 * may send an error response back or not. Note that normally
5748 * we should only check for HTTP status there, and check I/O
5749 * errors somewhere else.
5750 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5751
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5752 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5753 /* Invalid response */
5754 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5755 /* we detected a parsing error. We want to archive this response
5756 * in the dedicated proxy area for later troubleshooting.
5757 */
5758 hdr_response_bad:
5759 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5760 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5761
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5762 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5763 if (objt_server(s->target)) {
5764 objt_server(s->target)->counters.failed_resp++;
5765 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5766 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5767 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5768 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5769 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5770 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5771 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5772 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5773 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5774
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5775 if (!(s->flags & SF_ERR_MASK))
5776 s->flags |= SF_ERR_PRXCOND;
5777 if (!(s->flags & SF_FINST_MASK))
5778 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5779
5780 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5781 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5782
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5783 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5784 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5785 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5786 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5787 goto hdr_response_bad;
5788 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5789
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5790 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5791 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5792 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5793 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5794 else if (txn->flags & TX_NOT_FIRST)
5795 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5796
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5797 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5798 if (objt_server(s->target)) {
5799 objt_server(s->target)->counters.failed_resp++;
5800 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5801 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5802
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5803 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5804 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5805 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5806 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5807 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5808 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5809
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5810 if (!(s->flags & SF_ERR_MASK))
5811 s->flags |= SF_ERR_SRVCL;
5812 if (!(s->flags & SF_FINST_MASK))
5813 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5814 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5815 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5816
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]5817 /* read timeout : return a 504 to the client. */
5818 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5819 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5820 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5821
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5822 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5823 if (objt_server(s->target)) {
5824 objt_server(s->target)->counters.failed_resp++;
5825 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5826 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5827
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5828 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5829 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5830 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5831 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5832 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5833 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5834
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5835 if (!(s->flags & SF_ERR_MASK))
5836 s->flags |= SF_ERR_SRVTO;
5837 if (!(s->flags & SF_FINST_MASK))
5838 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5839 return 0;
5840 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5841
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5842 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5843 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]5844 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5845 s->be->be_counters.cli_aborts++;
5846 if (objt_server(s->target))
5847 objt_server(s->target)->counters.cli_aborts++;
5848
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5849 rep->analysers &= AN_FLT_END;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5850 channel_auto_close(rep);
5851
5852 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5853 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5854 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5855
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5856 if (!(s->flags & SF_ERR_MASK))
5857 s->flags |= SF_ERR_CLICL;
5858 if (!(s->flags & SF_FINST_MASK))
5859 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5860
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5861 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5862 return 0;
5863 }
5864
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5865 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5866 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5867 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5868 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5869 else if (txn->flags & TX_NOT_FIRST)
5870 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5871
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5872 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5873 if (objt_server(s->target)) {
5874 objt_server(s->target)->counters.failed_resp++;
5875 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5876 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5877
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5878 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5879 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5880 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5881 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5882 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5883 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5884
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5885 if (!(s->flags & SF_ERR_MASK))
5886 s->flags |= SF_ERR_SRVCL;
5887 if (!(s->flags & SF_FINST_MASK))
5888 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5889 return 0;
5890 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5891
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5892 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5893 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5894 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5895 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5896 else if (txn->flags & TX_NOT_FIRST)
5897 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5898
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5899 s->be->be_counters.failed_resp++;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5900 rep->analysers &= AN_FLT_END;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5901 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5902
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5903 if (!(s->flags & SF_ERR_MASK))
5904 s->flags |= SF_ERR_CLICL;
5905 if (!(s->flags & SF_FINST_MASK))
5906 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5907
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5908 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5909 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5910 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5911
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5912 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5913 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5914 return 0;
5915 }
5916
5917 /* More interesting part now : we know that we have a complete
5918 * response which at least looks like HTTP. We have an indicator
5919 * of each header's length, so we can parse them quickly.
5920 */
5921
5922 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5923 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5924
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5925 /*
5926 * 1: get the status code
5927 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5928 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5929 if (n < 1 || n > 5)
5930 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5931 /* when the client triggers a 4xx from the server, it's most often due
5932 * to a missing object or permission. These events should be tracked
5933 * because if they happen often, it may indicate a brute force or a
5934 * vulnerability scan.
5935 */
5936 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5937 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5938
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5939 if (objt_server(s->target))
5940 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5941
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]5942 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
5943 * exactly one digit "." one digit. This check may be disabled using
5944 * option accept-invalid-http-response.
5945 */
5946 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
5947 if (msg->sl.st.v_l != 8) {
5948 msg->err_pos = 0;
5949 goto hdr_response_bad;
5950 }
5951
5952 if (rep->buf->p[4] != '/' ||
5953 !isdigit((unsigned char)rep->buf->p[5]) ||
5954 rep->buf->p[6] != '.' ||
5955 !isdigit((unsigned char)rep->buf->p[7])) {
5956 msg->err_pos = 4;
5957 goto hdr_response_bad;
5958 }
5959 }
5960
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5961 /* check if the response is HTTP/1.1 or above */
5962 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5963 ((rep->buf->p[5] > '1') ||
5964 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5965 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5966
5967 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5968 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]5969
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5970 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5971 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5972
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5973 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]5974
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5975 /* Adjust server's health based on status code. Note: status codes 501
5976 * and 505 are triggered on demand by client request, so we must not
5977 * count them as server failures.
5978 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5979 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5980 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5981 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5982 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5983 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5984 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5985
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5986 /*
5987 * 2: check for cacheability.
5988 */
5989
5990 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5991 case 100:
5992 /*
5993 * We may be facing a 100-continue response, in which case this
5994 * is not the right response, and we're waiting for the next one.
5995 * Let's allow this response to go to the client and wait for the
5996 * next one.
5997 */
5998 hdr_idx_init(&txn->hdr_idx);
5999 msg->next -= channel_forward(rep, msg->next);
6000 msg->msg_state = HTTP_MSG_RPBEFORE;
6001 txn->status = 0;
6002 s->logs.t_data = -1; /* was not a response yet */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6003 FLT_STRM_CB(s, flt_http_reset(s, msg));
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6004 goto next_one;
6005
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6006 case 200:
6007 case 203:
6008 case 206:
6009 case 300:
6010 case 301:
6011 case 410:
6012 /* RFC2616 @13.4:
6013 * "A response received with a status code of
6014 * 200, 203, 206, 300, 301 or 410 MAY be stored
6015 * by a cache (...) unless a cache-control
6016 * directive prohibits caching."
6017 *
6018 * RFC2616 @9.5: POST method :
6019 * "Responses to this method are not cacheable,
6020 * unless the response includes appropriate
6021 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6022 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6023 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6024 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6025 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6026 break;
6027 default:
6028 break;
6029 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6030
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6031 /*
6032 * 3: we may need to capture headers
6033 */
6034 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6035 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6036 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6037 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6038
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6039 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6040 * by RFC7230#3.3.3 :
6041 *
6042 * The length of a message body is determined by one of the following
6043 * (in order of precedence):
6044 *
6045 * 1. Any response to a HEAD request and any response with a 1xx
6046 * (Informational), 204 (No Content), or 304 (Not Modified) status
6047 * code is always terminated by the first empty line after the
6048 * header fields, regardless of the header fields present in the
6049 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6050 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6051 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6052 * the connection will become a tunnel immediately after the empty
6053 * line that concludes the header fields. A client MUST ignore any
6054 * Content-Length or Transfer-Encoding header fields received in
6055 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6056 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6057 * 3. If a Transfer-Encoding header field is present and the chunked
6058 * transfer coding (Section 4.1) is the final encoding, the message
6059 * body length is determined by reading and decoding the chunked
6060 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6061 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6062 * If a Transfer-Encoding header field is present in a response and
6063 * the chunked transfer coding is not the final encoding, the
6064 * message body length is determined by reading the connection until
6065 * it is closed by the server. If a Transfer-Encoding header field
6066 * is present in a request and the chunked transfer coding is not
6067 * the final encoding, the message body length cannot be determined
6068 * reliably; the server MUST respond with the 400 (Bad Request)
6069 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6070 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6071 * If a message is received with both a Transfer-Encoding and a
6072 * Content-Length header field, the Transfer-Encoding overrides the
6073 * Content-Length. Such a message might indicate an attempt to
6074 * perform request smuggling (Section 9.5) or response splitting
6075 * (Section 9.4) and ought to be handled as an error. A sender MUST
6076 * remove the received Content-Length field prior to forwarding such
6077 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6078 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6079 * 4. If a message is received without Transfer-Encoding and with
6080 * either multiple Content-Length header fields having differing
6081 * field-values or a single Content-Length header field having an
6082 * invalid value, then the message framing is invalid and the
6083 * recipient MUST treat it as an unrecoverable error. If this is a
6084 * request message, the server MUST respond with a 400 (Bad Request)
6085 * status code and then close the connection. If this is a response
6086 * message received by a proxy, the proxy MUST close the connection
6087 * to the server, discard the received response, and send a 502 (Bad
6088 * Gateway) response to the client. If this is a response message
6089 * received by a user agent, the user agent MUST close the
6090 * connection to the server and discard the received response.
6091 *
6092 * 5. If a valid Content-Length header field is present without
6093 * Transfer-Encoding, its decimal value defines the expected message
6094 * body length in octets. If the sender closes the connection or
6095 * the recipient times out before the indicated number of octets are
6096 * received, the recipient MUST consider the message to be
6097 * incomplete and close the connection.
6098 *
6099 * 6. If this is a request message and none of the above are true, then
6100 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6101 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6102 * 7. Otherwise, this is a response message without a declared message
6103 * body length, so the message body length is determined by the
6104 * number of octets received prior to the server closing the
6105 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6106 */
6107
6108 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6109 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6110 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6111 * FIXME: should we parse anyway and return an error on chunked encoding ?
6112 */
6113 if (txn->meth == HTTP_METH_HEAD ||
6114 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6115 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6116 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6117 goto skip_content_length;
6118 }
6119
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6120 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6121 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6122 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6123 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6124 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6125 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6126 /* bad transfer-encoding (chunked followed by something else) */
6127 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6128 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6129 break;
6130 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6131 }
6132
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6133 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6134 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6135 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6136 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6137 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6138 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6139 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]6140 signed long long cl;
6141
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6142 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6143 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6144 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6145 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6146
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6147 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6148 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6149 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6150 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6151
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6152 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6153 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6154 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6155 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6156
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6157 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6158 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6159 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6160 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6161
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6162 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6163 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6164 }
6165
6166skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6167 /* Now we have to check if we need to modify the Connection header.
6168 * This is more difficult on the response than it is on the request,
6169 * because we can have two different HTTP versions and we don't know
6170 * how the client will interprete a response. For instance, let's say
6171 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6172 * HTTP/1.1 response without any header. Maybe it will bound itself to
6173 * HTTP/1.0 because it only knows about it, and will consider the lack
6174 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6175 * the lack of header as a keep-alive. Thus we will use two flags
6176 * indicating how a request MAY be understood by the client. In case
6177 * of multiple possibilities, we'll fix the header to be explicit. If
6178 * ambiguous cases such as both close and keepalive are seen, then we
6179 * will fall back to explicit close. Note that we won't take risks with
6180 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6181 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6182 */
6183
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6184 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6185 txn->status == 101)) {
6186 /* Either we've established an explicit tunnel, or we're
6187 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6188 * to understand the next protocols. We have to switch to tunnel
6189 * mode, so that we transfer the request and responses then let
6190 * this protocol pass unmodified. When we later implement specific
6191 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6192 * header which contains information about that protocol for
6193 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6194 */
6195 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6196 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6197 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6198 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6199 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6200 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6201 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6202
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6203 /* this situation happens when combining pretend-keepalive with httpclose. */
6204 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6205 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6206 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6207 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6208
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6209 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6210 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6211 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6212 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6213
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6214 /* now adjust header transformations depending on current state */
6215 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6216 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6217 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6218 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6219 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6220 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6221 else { /* SCL / KAL */
6222 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6223 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6224 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6225 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6226
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6227 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6228 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6229
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6230 /* Some keep-alive responses are converted to Server-close if
6231 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6232 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6233 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6234 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6235 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6236 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6237 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6238 }
6239
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6240 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6241 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6242
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6243 /* end of job, return OK */
6244 rep->analysers &= ~an_bit;
6245 rep->analyse_exp = TICK_ETERNITY;
6246 channel_auto_close(rep);
6247 return 1;
6248
6249 abort_keep_alive:
6250 /* A keep-alive request to the server failed on a network error.
6251 * The client is required to retry. We need to close without returning
6252 * any other information so that the client retries.
6253 */
6254 txn->status = 0;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6255 rep->analysers &= AN_FLT_END;
6256 s->req.analysers &= AN_FLT_END;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6257 channel_auto_close(rep);
6258 s->logs.logwait = 0;
6259 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6260 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6261 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6262 http_reply_and_close(s, txn->status, NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6263 return 0;
6264}
6265
6266/* This function performs all the processing enabled for the current response.
6267 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6268 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6269 * other functions. It works like process_request (see indications above).
6270 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6271int 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]6272{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6273 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6274 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6275 struct http_msg *msg = &txn->rsp;
6276 struct proxy *cur_proxy;
6277 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6278 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6279
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6280 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]6281 now_ms, __FUNCTION__,
6282 s,
6283 rep,
6284 rep->rex, rep->wex,
6285 rep->flags,
6286 rep->buf->i,
6287 rep->analysers);
6288
6289 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6290 return 0;
6291
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6292 /* The stats applet needs to adjust the Connection header but we don't
6293 * apply any filter there.
6294 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6295 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6296 rep->analysers &= ~an_bit;
6297 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6298 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6299 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6300
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6301 /*
6302 * We will have to evaluate the filters.
6303 * As opposed to version 1.2, now they will be evaluated in the
6304 * filters order and not in the header order. This means that
6305 * each filter has to be validated among all headers.
6306 *
6307 * Filters are tried with ->be first, then with ->fe if it is
6308 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6309 *
6310 * Maybe we are in resume condiion. In this case I choose the
6311 * "struct proxy" which contains the rule list matching the resume
6312 * pointer. If none of theses "struct proxy" match, I initialise
6313 * the process with the first one.
6314 *
6315 * In fact, I check only correspondance betwwen the current list
6316 * pointer and the ->fe rule list. If it doesn't match, I initialize
6317 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6318 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6319 if (s->current_rule_list == &sess->fe->http_res_rules)
6320 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6321 else
6322 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6323 while (1) {
6324 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6325
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6326 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6327 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6328 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6329
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6330 if (ret == HTTP_RULE_RES_BADREQ)
6331 goto return_srv_prx_502;
6332
6333 if (ret == HTTP_RULE_RES_DONE) {
6334 rep->analysers &= ~an_bit;
6335 rep->analyse_exp = TICK_ETERNITY;
6336 return 1;
6337 }
6338 }
6339
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6340 /* we need to be called again. */
6341 if (ret == HTTP_RULE_RES_YIELD) {
6342 channel_dont_close(rep);
6343 return 0;
6344 }
6345
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6346 /* try headers filters */
6347 if (rule_set->rsp_exp != NULL) {
6348 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6349 return_bad_resp:
6350 if (objt_server(s->target)) {
6351 objt_server(s->target)->counters.failed_resp++;
6352 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6353 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6354 s->be->be_counters.failed_resp++;
6355 return_srv_prx_502:
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6356 rep->analysers &= AN_FLT_END;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6357 txn->status = 502;
6358 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6359 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6360 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6361 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6362 if (!(s->flags & SF_ERR_MASK))
6363 s->flags |= SF_ERR_PRXCOND;
6364 if (!(s->flags & SF_FINST_MASK))
6365 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6366 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6367 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6368 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6369
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6370 /* has the response been denied ? */
6371 if (txn->flags & TX_SVDENY) {
6372 if (objt_server(s->target))
6373 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6374
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6375 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6376 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6377 if (sess->listener->counters)
6378 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6379
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6380 goto return_srv_prx_502;
6381 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6382
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6383 /* add response headers from the rule sets in the same order */
6384 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6385 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6386 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6387 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6388 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]6389 ret = acl_pass(ret);
6390 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6391 ret = !ret;
6392 if (!ret)
6393 continue;
6394 }
6395 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6396 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6397 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6398
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6399 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6400 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6401 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6402 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6403 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6404
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6405 /* After this point, this anayzer can't return yield, so we can
6406 * remove the bit corresponding to this analyzer from the list.
6407 *
6408 * Note that the intermediate returns and goto found previously
6409 * reset the analyzers.
6410 */
6411 rep->analysers &= ~an_bit;
6412 rep->analyse_exp = TICK_ETERNITY;
6413
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6414 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6415 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6416 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6417
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6418 /*
6419 * Now check for a server cookie.
6420 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]6421 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]6422 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6423
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6424 /*
6425 * Check for cache-control or pragma headers if required.
6426 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6427 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]6428 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6429
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6430 /*
6431 * Add server cookie in the response if needed
6432 */
6433 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6434 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6435 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6436 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6437 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6438 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6439 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6440 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6441 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6442 /* the server is known, it's not the one the client requested, or the
6443 * cookie's last seen date needs to be refreshed. We have to
6444 * insert a set-cookie here, except if we want to insert only on POST
6445 * requests and this one isn't. Note that servers which don't have cookies
6446 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6447 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6448 if (!objt_server(s->target)->cookie) {
6449 chunk_printf(&trash,
6450 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6451 s->be->cookie_name);
6452 }
6453 else {
6454 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]6455
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6456 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6457 /* emit last_date, which is mandatory */
6458 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6459 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6460 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6461
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6462 if (s->be->cookie_maxlife) {
6463 /* emit first_date, which is either the original one or
6464 * the current date.
6465 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6466 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6467 s30tob64(txn->cookie_first_date ?
6468 txn->cookie_first_date >> 2 :
6469 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6470 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6471 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6472 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6473 chunk_appendf(&trash, "; path=/");
6474 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6475
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6476 if (s->be->cookie_domain)
6477 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6478
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6479 if (s->be->ck_opts & PR_CK_HTTPONLY)
6480 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6481
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6482 if (s->be->ck_opts & PR_CK_SECURE)
6483 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6484
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6485 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6486 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6487
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6488 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6489 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6490 /* the server did not change, only the date was updated */
6491 txn->flags |= TX_SCK_UPDATED;
6492 else
6493 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6494
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6495 /* Here, we will tell an eventual cache on the client side that we don't
6496 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6497 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6498 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6499 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6500 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6501
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6502 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6503
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6504 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6505 "Cache-control: private", 22) < 0))
6506 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6507 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6508 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6509
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6510 /*
6511 * Check if result will be cacheable with a cookie.
6512 * We'll block the response if security checks have caught
6513 * nasty things such as a cacheable cookie.
6514 */
6515 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6516 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6517 (s->be->options & PR_O_CHK_CACHE)) {
6518 /* we're in presence of a cacheable response containing
6519 * a set-cookie header. We'll block it as requested by
6520 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6521 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6522 if (objt_server(s->target))
6523 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6524
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6525 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6526 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6527 if (sess->listener->counters)
6528 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6529
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6530 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6531 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6532 send_log(s->be, LOG_ALERT,
6533 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6534 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6535 goto return_srv_prx_502;
6536 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6537
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6538 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6539 /*
6540 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6541 * If an "Upgrade" token is found, the header is left untouched in order
6542 * 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]6543 * if anything but "Upgrade" is present in the Connection header. We don't
6544 * want to touch any 101 response either since it's switching to another
6545 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6546 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6547 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6548 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6549 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6550 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6551 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6552
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6553 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6554 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6555 /* we want a keep-alive response here. Keep-alive header
6556 * required if either side is not 1.1.
6557 */
6558 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6559 want_flags |= TX_CON_KAL_SET;
6560 }
6561 else {
6562 /* we want a close response here. Close header required if
6563 * the server is 1.1, regardless of the client.
6564 */
6565 if (msg->flags & HTTP_MSGF_VER_11)
6566 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6567 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6568
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6569 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6570 http_change_connection_header(txn, msg, want_flags);
6571 }
6572
6573 skip_header_mangling:
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6574 if ((msg->flags & HTTP_MSGF_XFER_LEN) || HAS_FILTERS(s) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6575 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
6576 rep->analysers &= ~AN_FLT_XFER_DATA;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6577 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6578 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6579
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6580 /* if the user wants to log as soon as possible, without counting
6581 * bytes from the server, then this is the right moment. We have
6582 * to temporarily assign bytes_out to log what we currently have.
6583 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6584 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6585 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6586 s->logs.bytes_out = txn->rsp.eoh;
6587 s->do_log(s);
6588 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6589 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6590 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6591}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6592
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6593/* This function is an analyser which forwards response body (including chunk
6594 * sizes if any). It is called as soon as we must forward, even if we forward
6595 * zero byte. The only situation where it must not be called is when we're in
6596 * tunnel mode and we want to forward till the close. It's used both to forward
6597 * remaining data and to resync after end of body. It expects the msg_state to
6598 * 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]6599 * 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]6600 *
6601 * It is capable of compressing response data both in content-length mode and
6602 * in chunked mode. The state machines follows different flows depending on
6603 * whether content-length and chunked modes are used, since there are no
6604 * trailers in content-length :
6605 *
6606 * chk-mode cl-mode
6607 * ,----- BODY -----.
6608 * / \
6609 * V size > 0 V chk-mode
6610 * .--> SIZE -------------> DATA -------------> CRLF
6611 * | | size == 0 | last byte |
6612 * | v final crlf v inspected |
6613 * | TRAILERS -----------> DONE |
6614 * | |
6615 * `----------------------------------------------'
6616 *
6617 * Compression only happens in the DATA state, and must be flushed in final
6618 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6619 * is performed at once on final states for all bytes parsed, or when leaving
6620 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6621 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6622int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6623{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6624 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6625 struct http_txn *txn = s->txn;
6626 struct http_msg *msg = &s->txn->rsp;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6627 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6628
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6629 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6630 return 0;
6631
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6632 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]6633 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6634 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6635 /* Output closed while we were sending data. We must abort and
6636 * wake the other side up.
6637 */
6638 msg->msg_state = HTTP_MSG_ERROR;
6639 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6640 return 1;
6641 }
6642
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6643 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6644 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6645
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6646 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6647 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
6648 ? HTTP_MSG_CHUNK_SIZE
6649 : HTTP_MSG_DATA);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6650 }
6651
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6652 if (res->to_forward) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6653 /* We can't process the buffer's contents yet */
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6654 res->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6655 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6656 }
6657
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6658 if (msg->msg_state < HTTP_MSG_DONE) {
6659 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
6660 ? http_msg_forward_chunked_body(s, msg)
6661 : http_msg_forward_body(s, msg));
6662 if (!ret)
6663 goto missing_data_or_waiting;
6664 if (ret < 0)
6665 goto return_bad_res;
6666 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6667
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6668 /* other states, DONE...TUNNEL */
6669 /* for keep-alive we don't want to forward closes on DONE */
6670 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6671 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
6672 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6673
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6674 ret = msg->msg_state;
6675 if (http_resync_states(s)) {
6676 /* some state changes occurred, maybe the analyser was disabled
6677 * too. */
6678 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
6679 if (res->flags & CF_SHUTW) {
6680 /* response errors are most likely due to the
6681 * client aborting the transfer. */
6682 goto aborted_xfer;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6683 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6684 if (msg->err_pos >= 0)
6685 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, strm_fe(s));
6686 goto return_bad_res;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6687 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6688 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6689 }
6690
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6691 missing_data_or_waiting:
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6692 if (res->flags & CF_SHUTW)
6693 goto aborted_xfer;
6694
6695 /* stop waiting for data if the input is closed before the end. If the
6696 * client side was already closed, it means that the client has aborted,
6697 * so we don't want to count this as a server abort. Otherwise it's a
6698 * server abort.
6699 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6700 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6701 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6702 goto aborted_xfer;
Christopher Fauleta46bbd82015-06-19 09:00:58 +0200[diff] [blame]6703 /* If we have some pending data, we continue the processing */
6704 if (!buffer_pending(res->buf)) {
6705 if (!(s->flags & SF_ERR_MASK))
6706 s->flags |= SF_ERR_SRVCL;
6707 s->be->be_counters.srv_aborts++;
6708 if (objt_server(s->target))
6709 objt_server(s->target)->counters.srv_aborts++;
6710 goto return_bad_res_stats_ok;
6711 }
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6712 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6713
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6714 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6715 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6716 goto return_bad_res;
6717
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6718 /* When TE: chunked is used, we need to get there again to parse
6719 * remaining chunks even if the server has closed, so we don't want to
6720 * set CF_DONTCLOSE. Similarly, if the body length is undefined, if
6721 * keep-alive is set on the client side or if there are filters
6722 * registered on the stream, we don't want to forward a close
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6723 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6724 if ((msg->flags & HTTP_MSGF_TE_CHNK) || !msg->body_len ||
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6725 HAS_FILTERS(s) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6726 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6727 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6728 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6729
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6730 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6731 * 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]6732 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6733 * modes are already handled by the stream sock layer. We must not do
6734 * this in content-length mode because it could present the MSG_MORE
6735 * flag with the last block of forwarded data, which would cause an
6736 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6737 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6738 if ((msg->flags & HTTP_MSGF_TE_CHNK) || (msg->flags & HTTP_MSGF_COMPRESSING))
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6739 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6740
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6741 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6742 return 0;
6743
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6744 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6745 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6746 if (objt_server(s->target))
6747 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6748
6749 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6750 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6751 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6752 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6753 res->analysers &= AN_FLT_END;
6754 s->req.analysers &= AN_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6755 if (objt_server(s->target))
6756 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6757
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6758 if (!(s->flags & SF_ERR_MASK))
6759 s->flags |= SF_ERR_PRXCOND;
6760 if (!(s->flags & SF_FINST_MASK))
6761 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6762 return 0;
6763
6764 aborted_xfer:
6765 txn->rsp.msg_state = HTTP_MSG_ERROR;
6766 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6767 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6768 res->analysers &= AN_FLT_END;
6769 s->req.analysers &= AN_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6770
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6771 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6772 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6773 if (objt_server(s->target))
6774 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6775
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6776 if (!(s->flags & SF_ERR_MASK))
6777 s->flags |= SF_ERR_CLICL;
6778 if (!(s->flags & SF_FINST_MASK))
6779 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6780 return 0;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6781}
6782
6783
6784static inline int
6785http_msg_forward_body(struct stream *s, struct http_msg *msg)
6786{
6787 struct channel *chn = msg->chn;
6788 int ret;
6789
6790 /* Here we have the guarantee to be in HTTP_MSG_DATA or HTTP_MSG_ENDING state */
6791
6792 if (msg->msg_state == HTTP_MSG_ENDING)
6793 goto ending;
6794
6795 /* Neither content-length, nor transfer-encoding was found, so we must
6796 * read the body until the server connection is closed. In that case, we
6797 * eat data as they come. Of course, this happens for response only. */
6798 if (!(msg->flags & HTTP_MSGF_XFER_LEN)) {
6799 unsigned long long len = (chn->buf->i - msg->next);
6800 msg->chunk_len += len;
6801 msg->body_len += len;
6802 }
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6803 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
6804 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
6805 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6806 msg->next += ret;
6807 msg->chunk_len -= ret;
6808 if (msg->chunk_len) {
6809 /* input empty or output full */
6810 if (chn->buf->i > msg->next)
6811 chn->flags |= CF_WAKE_WRITE;
6812 goto missing_data_or_waiting;
6813 }
6814
6815 if (!(msg->flags & HTTP_MSGF_XFER_LEN) && !(chn->flags & CF_SHUTR)) {
6816 /* The server still sending data */
6817 goto missing_data_or_waiting;
6818 }
6819 msg->msg_state = HTTP_MSG_ENDING;
6820
6821 ending:
6822 /* we may have some pending data starting at res->buf->p such as a last
6823 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6824 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
6825 /* default_ret */ msg->next,
6826 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6827 b_adv(chn->buf, ret);
6828 msg->next -= ret;
6829 if (msg->next)
6830 goto missing_data_or_waiting;
6831
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6832 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
6833 /* default_ret */ 1,
6834 /* on_error */ goto error,
6835 /* on_wait */ goto waiting);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6836 msg->msg_state = HTTP_MSG_DONE;
6837 return 1;
6838
6839 missing_data_or_waiting:
6840 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6841 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
6842 /* default_ret */ msg->next,
6843 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6844 b_adv(chn->buf, ret);
6845 msg->next -= ret;
6846 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
6847 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]6848 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6849 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
6850 waiting:
6851 return 0;
6852 error:
6853 return -1;
6854}
6855
6856static inline int
6857http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg)
6858{
6859 struct channel *chn = msg->chn;
6860 int ret;
6861
6862 /* Here we have the guarantee to be in one of the following state:
6863 * HTTP_MSG_DATA, HTTP_MSG_CHUNK_SIZE, HTTP_MSG_CHUNK_CRLF,
6864 * HTTP_MSG_TRAILERS or HTTP_MSG_ENDING. */
6865
6866 switch_states:
6867 switch (msg->msg_state) {
6868 case HTTP_MSG_DATA:
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6869 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
6870 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
6871 /* on_error */ goto error);
6872 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6873 msg->chunk_len -= ret;
6874 if (msg->chunk_len) {
6875 /* input empty or output full */
6876 if (chn->buf->i > msg->next)
6877 chn->flags |= CF_WAKE_WRITE;
6878 goto missing_data_or_waiting;
6879 }
6880
6881 /* nothing left to forward for this chunk*/
6882 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
6883 /* fall through for HTTP_MSG_CHUNK_CRLF */
6884
6885 case HTTP_MSG_CHUNK_CRLF:
6886 /* we want the CRLF after the data */
6887 ret = http_skip_chunk_crlf(msg);
6888 if (ret == 0)
6889 goto missing_data_or_waiting;
6890 if (ret < 0)
6891 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]6892 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6893 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6894 /* fall through for HTTP_MSG_CHUNK_SIZE */
6895
6896 case HTTP_MSG_CHUNK_SIZE:
6897 /* read the chunk size and assign it to ->chunk_len,
6898 * then set ->next to point to the body and switch to
6899 * DATA or TRAILERS state.
6900 */
6901 ret = http_parse_chunk_size(msg);
6902 if (ret == 0)
6903 goto missing_data_or_waiting;
6904 if (ret < 0)
6905 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]6906 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6907 if (msg->chunk_len) {
6908 msg->msg_state = HTTP_MSG_DATA;
6909 goto switch_states;
6910 }
6911 msg->msg_state = HTTP_MSG_TRAILERS;
6912 /* fall through for HTTP_MSG_TRAILERS */
6913
6914 case HTTP_MSG_TRAILERS:
6915 ret = http_forward_trailers(msg);
6916 if (ret < 0)
6917 goto chunk_parsing_error;
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6918 FLT_STRM_DATA_CB(s, chn, flt_http_chunk_trailers(s, msg),
6919 /* default_ret */ 1,
6920 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6921 msg->next += msg->sol;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6922 if (!ret)
6923 goto missing_data_or_waiting;
6924 break;
6925
6926 case HTTP_MSG_ENDING:
6927 goto ending;
6928
6929 default:
6930 /* This should no happen in this function */
6931 goto error;
6932 }
6933
6934 msg->msg_state = HTTP_MSG_ENDING;
6935 ending:
6936 /* we may have some pending data starting at res->buf->p such as a last
6937 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6938 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]6939 /* default_ret */ msg->next,
6940 /* on_error */ goto error);
6941 b_adv(chn->buf, ret);
6942 msg->next -= ret;
6943 if (msg->next)
6944 goto missing_data_or_waiting;
6945
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6946 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6947 /* default_ret */ 1,
6948 /* on_error */ goto error,
6949 /* on_wait */ goto waiting);
6950 msg->msg_state = HTTP_MSG_DONE;
6951 return 1;
6952
6953 missing_data_or_waiting:
6954 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6955 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]6956 /* default_ret */ msg->next,
6957 /* on_error */ goto error);
6958 b_adv(chn->buf, ret);
6959 msg->next -= ret;
6960 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
6961 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]6962 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6963 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
6964 waiting:
6965 return 0;
6966
6967 chunk_parsing_error:
6968 if (msg->err_pos >= 0) {
6969 if (chn->flags & CF_ISRESP)
6970 http_capture_bad_message(&s->be->invalid_rep, s, msg,
6971 msg->msg_state, strm_fe(s));
6972 else
6973 http_capture_bad_message(&strm_fe(s)->invalid_req, s,
6974 msg, msg->msg_state, s->be);
6975 }
6976 error:
6977 return -1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6978}
6979
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6980
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6981/* Iterate the same filter through all request headers.
6982 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6983 * Since it can manage the switch to another backend, it updates the per-proxy
6984 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6985 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6986int 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]6987{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6988 char *cur_ptr, *cur_end, *cur_next;
6989 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6990 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6991 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6992 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6993
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6994 last_hdr = 0;
6995
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6996 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6997 old_idx = 0;
6998
6999 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7000 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7001 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7002 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7003 (exp->action == ACT_ALLOW ||
7004 exp->action == ACT_DENY ||
7005 exp->action == ACT_TARPIT))
7006 return 0;
7007
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7008 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7009 if (!cur_idx)
7010 break;
7011
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7012 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7013 cur_ptr = cur_next;
7014 cur_end = cur_ptr + cur_hdr->len;
7015 cur_next = cur_end + cur_hdr->cr + 1;
7016
7017 /* Now we have one header between cur_ptr and cur_end,
7018 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7019 */
7020
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7021 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]7022 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7023 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7024 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7025 last_hdr = 1;
7026 break;
7027
7028 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7029 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7030 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7031 break;
7032
7033 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7034 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7035 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7036 break;
7037
7038 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7039 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7040 if (trash.len < 0)
7041 return -1;
7042
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7043 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7044 /* FIXME: if the user adds a newline in the replacement, the
7045 * index will not be recalculated for now, and the new line
7046 * will not be counted as a new header.
7047 */
7048
7049 cur_end += delta;
7050 cur_next += delta;
7051 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7052 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7053 break;
7054
7055 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7056 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7057 cur_next += delta;
7058
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7059 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7060 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7061 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7062 cur_hdr->len = 0;
7063 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7064 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7065 break;
7066
7067 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7068 }
7069
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7070 /* keep the link from this header to next one in case of later
7071 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7072 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7073 old_idx = cur_idx;
7074 }
7075 return 0;
7076}
7077
7078
7079/* Apply the filter to the request line.
7080 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7081 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7082 * Since it can manage the switch to another backend, it updates the per-proxy
7083 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7084 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7085int 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]7086{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7087 char *cur_ptr, *cur_end;
7088 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7089 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7090 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7091
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7092 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7093 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7094 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7095 (exp->action == ACT_ALLOW ||
7096 exp->action == ACT_DENY ||
7097 exp->action == ACT_TARPIT))
7098 return 0;
7099 else if (exp->action == ACT_REMOVE)
7100 return 0;
7101
7102 done = 0;
7103
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7104 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7105 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7106
7107 /* Now we have the request line between cur_ptr and cur_end */
7108
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7109 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]7110 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7111 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7112 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7113 done = 1;
7114 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7115
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7116 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7117 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7118 done = 1;
7119 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7120
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7121 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7122 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7123 done = 1;
7124 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7125
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7126 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7127 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7128 if (trash.len < 0)
7129 return -1;
7130
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7131 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7132 /* FIXME: if the user adds a newline in the replacement, the
7133 * index will not be recalculated for now, and the new line
7134 * will not be counted as a new header.
7135 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7136
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7137 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7138 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7139 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7140 HTTP_MSG_RQMETH,
7141 cur_ptr, cur_end + 1,
7142 NULL, NULL);
7143 if (unlikely(!cur_end))
7144 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7145
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7146 /* we have a full request and we know that we have either a CR
7147 * or an LF at <ptr>.
7148 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7149 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7150 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]7151 /* there is no point trying this regex on headers */
7152 return 1;
7153 }
7154 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7155 return done;
7156}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7157
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7158
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7159
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7160/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7161 * 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]7162 * 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]7163 * unparsable request. Since it can manage the switch to another backend, it
7164 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7165 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7166int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7167{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7168 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7169 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7170 struct hdr_exp *exp;
7171
7172 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7173 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7174
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7175 /*
7176 * The interleaving of transformations and verdicts
7177 * makes it difficult to decide to continue or stop
7178 * the evaluation.
7179 */
7180
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7181 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7182 break;
7183
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7184 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7185 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7186 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7187 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7188
7189 /* if this filter had a condition, evaluate it now and skip to
7190 * next filter if the condition does not match.
7191 */
7192 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7193 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]7194 ret = acl_pass(ret);
7195 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7196 ret = !ret;
7197
7198 if (!ret)
7199 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7200 }
7201
7202 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7203 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7204 if (unlikely(ret < 0))
7205 return -1;
7206
7207 if (likely(ret == 0)) {
7208 /* The filter did not match the request, it can be
7209 * iterated through all headers.
7210 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7211 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7212 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7213 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7214 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7215 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7216}
7217
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7218
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7219/* Find the end of a cookie value contained between <s> and <e>. It works the
7220 * same way as with headers above except that the semi-colon also ends a token.
7221 * See RFC2965 for more information. Note that it requires a valid header to
7222 * return a valid result.
7223 */
7224char *find_cookie_value_end(char *s, const char *e)
7225{
7226 int quoted, qdpair;
7227
7228 quoted = qdpair = 0;
7229 for (; s < e; s++) {
7230 if (qdpair) qdpair = 0;
7231 else if (quoted) {
7232 if (*s == '\\') qdpair = 1;
7233 else if (*s == '"') quoted = 0;
7234 }
7235 else if (*s == '"') quoted = 1;
7236 else if (*s == ',' || *s == ';') return s;
7237 }
7238 return s;
7239}
7240
7241/* Delete a value in a header between delimiters <from> and <next> in buffer
7242 * <buf>. The number of characters displaced is returned, and the pointer to
7243 * the first delimiter is updated if required. The function tries as much as
7244 * possible to respect the following principles :
7245 * - replace <from> delimiter by the <next> one unless <from> points to a
7246 * colon, in which case <next> is simply removed
7247 * - set exactly one space character after the new first delimiter, unless
7248 * there are not enough characters in the block being moved to do so.
7249 * - remove unneeded spaces before the previous delimiter and after the new
7250 * one.
7251 *
7252 * It is the caller's responsibility to ensure that :
7253 * - <from> points to a valid delimiter or the colon ;
7254 * - <next> points to a valid delimiter or the final CR/LF ;
7255 * - there are non-space chars before <from> ;
7256 * - there is a CR/LF at or after <next>.
7257 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7258int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7259{
7260 char *prev = *from;
7261
7262 if (*prev == ':') {
7263 /* We're removing the first value, preserve the colon and add a
7264 * space if possible.
7265 */
7266 if (!http_is_crlf[(unsigned char)*next])
7267 next++;
7268 prev++;
7269 if (prev < next)
7270 *prev++ = ' ';
7271
7272 while (http_is_spht[(unsigned char)*next])
7273 next++;
7274 } else {
7275 /* Remove useless spaces before the old delimiter. */
7276 while (http_is_spht[(unsigned char)*(prev-1)])
7277 prev--;
7278 *from = prev;
7279
7280 /* copy the delimiter and if possible a space if we're
7281 * not at the end of the line.
7282 */
7283 if (!http_is_crlf[(unsigned char)*next]) {
7284 *prev++ = *next++;
7285 if (prev + 1 < next)
7286 *prev++ = ' ';
7287 while (http_is_spht[(unsigned char)*next])
7288 next++;
7289 }
7290 }
7291 return buffer_replace2(buf, prev, next, NULL, 0);
7292}
7293
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7294/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7295 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7296 * desirable to call it only when needed. This code is quite complex because
7297 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7298 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7299 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7300void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7301{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7302 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7303 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7304 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7305 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7306 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7307 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7308
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7309 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7310 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7311 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7312
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7313 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7314 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7315 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7316
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7317 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7318 hdr_beg = hdr_next;
7319 hdr_end = hdr_beg + cur_hdr->len;
7320 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7321
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7322 /* We have one full header between hdr_beg and hdr_end, and the
7323 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7324 * "Cookie:" headers.
7325 */
7326
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7327 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7328 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7329 old_idx = cur_idx;
7330 continue;
7331 }
7332
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7333 del_from = NULL; /* nothing to be deleted */
7334 preserve_hdr = 0; /* assume we may kill the whole header */
7335
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7336 /* Now look for cookies. Conforming to RFC2109, we have to support
7337 * attributes whose name begin with a '$', and associate them with
7338 * the right cookie, if we want to delete this cookie.
7339 * So there are 3 cases for each cookie read :
7340 * 1) it's a special attribute, beginning with a '$' : ignore it.
7341 * 2) it's a server id cookie that we *MAY* want to delete : save
7342 * some pointers on it (last semi-colon, beginning of cookie...)
7343 * 3) it's an application cookie : we *MAY* have to delete a previous
7344 * "special" cookie.
7345 * At the end of loop, if a "special" cookie remains, we may have to
7346 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7347 * *MUST* delete it.
7348 *
7349 * Note: RFC2965 is unclear about the processing of spaces around
7350 * the equal sign in the ATTR=VALUE form. A careful inspection of
7351 * the RFC explicitly allows spaces before it, and not within the
7352 * tokens (attrs or values). An inspection of RFC2109 allows that
7353 * too but section 10.1.3 lets one think that spaces may be allowed
7354 * after the equal sign too, resulting in some (rare) buggy
7355 * implementations trying to do that. So let's do what servers do.
7356 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7357 * allowed quoted strings in values, with any possible character
7358 * after a backslash, including control chars and delimitors, which
7359 * causes parsing to become ambiguous. Browsers also allow spaces
7360 * within values even without quotes.
7361 *
7362 * We have to keep multiple pointers in order to support cookie
7363 * removal at the beginning, middle or end of header without
7364 * corrupting the header. All of these headers are valid :
7365 *
7366 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7367 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7368 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7369 * | | | | | | | | |
7370 * | | | | | | | | hdr_end <--+
7371 * | | | | | | | +--> next
7372 * | | | | | | +----> val_end
7373 * | | | | | +-----------> val_beg
7374 * | | | | +--------------> equal
7375 * | | | +----------------> att_end
7376 * | | +---------------------> att_beg
7377 * | +--------------------------> prev
7378 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7379 */
7380
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7381 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7382 /* Iterate through all cookies on this line */
7383
7384 /* find att_beg */
7385 att_beg = prev + 1;
7386 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7387 att_beg++;
7388
7389 /* find att_end : this is the first character after the last non
7390 * space before the equal. It may be equal to hdr_end.
7391 */
7392 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7393
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7394 while (equal < hdr_end) {
7395 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7396 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7397 if (http_is_spht[(unsigned char)*equal++])
7398 continue;
7399 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7400 }
7401
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7402 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7403 * is between <att_beg> and <equal>, both may be identical.
7404 */
7405
7406 /* look for end of cookie if there is an equal sign */
7407 if (equal < hdr_end && *equal == '=') {
7408 /* look for the beginning of the value */
7409 val_beg = equal + 1;
7410 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7411 val_beg++;
7412
7413 /* find the end of the value, respecting quotes */
7414 next = find_cookie_value_end(val_beg, hdr_end);
7415
7416 /* make val_end point to the first white space or delimitor after the value */
7417 val_end = next;
7418 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7419 val_end--;
7420 } else {
7421 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7422 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7423
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7424 /* We have nothing to do with attributes beginning with '$'. However,
7425 * they will automatically be removed if a header before them is removed,
7426 * since they're supposed to be linked together.
7427 */
7428 if (*att_beg == '$')
7429 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7430
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7431 /* Ignore cookies with no equal sign */
7432 if (equal == next) {
7433 /* This is not our cookie, so we must preserve it. But if we already
7434 * scheduled another cookie for removal, we cannot remove the
7435 * complete header, but we can remove the previous block itself.
7436 */
7437 preserve_hdr = 1;
7438 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7439 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7440 val_end += delta;
7441 next += delta;
7442 hdr_end += delta;
7443 hdr_next += delta;
7444 cur_hdr->len += delta;
7445 http_msg_move_end(&txn->req, delta);
7446 prev = del_from;
7447 del_from = NULL;
7448 }
7449 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7450 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7451
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7452 /* if there are spaces around the equal sign, we need to
7453 * strip them otherwise we'll get trouble for cookie captures,
7454 * or even for rewrites. Since this happens extremely rarely,
7455 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7456 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7457 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7458 int stripped_before = 0;
7459 int stripped_after = 0;
7460
7461 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7462 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7463 equal += stripped_before;
7464 val_beg += stripped_before;
7465 }
7466
7467 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7468 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7469 val_beg += stripped_after;
7470 stripped_before += stripped_after;
7471 }
7472
7473 val_end += stripped_before;
7474 next += stripped_before;
7475 hdr_end += stripped_before;
7476 hdr_next += stripped_before;
7477 cur_hdr->len += stripped_before;
7478 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7479 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7480 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7481
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7482 /* First, let's see if we want to capture this cookie. We check
7483 * that we don't already have a client side cookie, because we
7484 * can only capture one. Also as an optimisation, we ignore
7485 * cookies shorter than the declared name.
7486 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7487 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7488 (val_end - att_beg >= sess->fe->capture_namelen) &&
7489 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7490 int log_len = val_end - att_beg;
7491
7492 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7493 Alert("HTTP logging : out of memory.\n");
7494 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7495 if (log_len > sess->fe->capture_len)
7496 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7497 memcpy(txn->cli_cookie, att_beg, log_len);
7498 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7499 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7500 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7501
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7502 /* Persistence cookies in passive, rewrite or insert mode have the
7503 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7504 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7505 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7506 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7507 * For cookies in prefix mode, the form is :
7508 *
7509 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7510 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7511 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7512 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7513 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7514 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7515
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7516 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7517 * have the server ID between val_beg and delim, and the original cookie between
7518 * delim+1 and val_end. Otherwise, delim==val_end :
7519 *
7520 * Cookie: NAME=SRV; # in all but prefix modes
7521 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7522 * | || || | |+-> next
7523 * | || || | +--> val_end
7524 * | || || +---------> delim
7525 * | || |+------------> val_beg
7526 * | || +-------------> att_end = equal
7527 * | |+-----------------> att_beg
7528 * | +------------------> prev
7529 * +-------------------------> hdr_beg
7530 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7531
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7532 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7533 for (delim = val_beg; delim < val_end; delim++)
7534 if (*delim == COOKIE_DELIM)
7535 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7536 } else {
7537 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7538 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7539 /* Now check if the cookie contains a date field, which would
7540 * appear after a vertical bar ('|') just after the server name
7541 * and before the delimiter.
7542 */
7543 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7544 if (vbar1) {
7545 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7546 * right is the last seen date. It is a base64 encoded
7547 * 30-bit value representing the UNIX date since the
7548 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7549 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7550 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7551 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7552 if (val_end - vbar1 >= 5) {
7553 val = b64tos30(vbar1);
7554 if (val > 0)
7555 txn->cookie_last_date = val << 2;
7556 }
7557 /* look for a second vertical bar */
7558 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7559 if (vbar1 && (val_end - vbar1 > 5)) {
7560 val = b64tos30(vbar1 + 1);
7561 if (val > 0)
7562 txn->cookie_first_date = val << 2;
7563 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7564 }
7565 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7566
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7567 /* if the cookie has an expiration date and the proxy wants to check
7568 * it, then we do that now. We first check if the cookie is too old,
7569 * then only if it has expired. We detect strict overflow because the
7570 * time resolution here is not great (4 seconds). Cookies with dates
7571 * in the future are ignored if their offset is beyond one day. This
7572 * allows an admin to fix timezone issues without expiring everyone
7573 * and at the same time avoids keeping unwanted side effects for too
7574 * long.
7575 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7576 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7577 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7578 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7579 txn->flags &= ~TX_CK_MASK;
7580 txn->flags |= TX_CK_OLD;
7581 delim = val_beg; // let's pretend we have not found the cookie
7582 txn->cookie_first_date = 0;
7583 txn->cookie_last_date = 0;
7584 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7585 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7586 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7587 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7588 txn->flags &= ~TX_CK_MASK;
7589 txn->flags |= TX_CK_EXPIRED;
7590 delim = val_beg; // let's pretend we have not found the cookie
7591 txn->cookie_first_date = 0;
7592 txn->cookie_last_date = 0;
7593 }
7594
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7595 /* Here, we'll look for the first running server which supports the cookie.
7596 * This allows to share a same cookie between several servers, for example
7597 * to dedicate backup servers to specific servers only.
7598 * However, to prevent clients from sticking to cookie-less backup server
7599 * when they have incidentely learned an empty cookie, we simply ignore
7600 * empty cookies and mark them as invalid.
7601 * The same behaviour is applied when persistence must be ignored.
7602 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7603 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7604 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7605
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7606 while (srv) {
7607 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7608 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7609 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7610 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7611 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7612 /* we found the server and we can use it */
7613 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7614 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7615 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7616 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7617 break;
7618 } else {
7619 /* we found a server, but it's down,
7620 * mark it as such and go on in case
7621 * another one is available.
7622 */
7623 txn->flags &= ~TX_CK_MASK;
7624 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7625 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7626 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7627 srv = srv->next;
7628 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7629
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7630 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7631 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7632 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7633 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7634 txn->flags |= TX_CK_UNUSED;
7635 else
7636 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7637 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7638
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7639 /* depending on the cookie mode, we may have to either :
7640 * - delete the complete cookie if we're in insert+indirect mode, so that
7641 * the server never sees it ;
7642 * - remove the server id from the cookie value, and tag the cookie as an
7643 * application cookie so that it does not get accidentely removed later,
7644 * if we're in cookie prefix mode
7645 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7646 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7647 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7648
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7649 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7650 val_end += delta;
7651 next += delta;
7652 hdr_end += delta;
7653 hdr_next += delta;
7654 cur_hdr->len += delta;
7655 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7656
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7657 del_from = NULL;
7658 preserve_hdr = 1; /* we want to keep this cookie */
7659 }
7660 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7661 (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]7662 del_from = prev;
7663 }
7664 } else {
7665 /* This is not our cookie, so we must preserve it. But if we already
7666 * scheduled another cookie for removal, we cannot remove the
7667 * complete header, but we can remove the previous block itself.
7668 */
7669 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7670
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7671 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7672 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7673 if (att_beg >= del_from)
7674 att_beg += delta;
7675 if (att_end >= del_from)
7676 att_end += delta;
7677 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7678 val_end += delta;
7679 next += delta;
7680 hdr_end += delta;
7681 hdr_next += delta;
7682 cur_hdr->len += delta;
7683 http_msg_move_end(&txn->req, delta);
7684 prev = del_from;
7685 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7686 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7687 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7688
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7689 /* continue with next cookie on this header line */
7690 att_beg = next;
7691 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7692
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7693 /* There are no more cookies on this line.
7694 * We may still have one (or several) marked for deletion at the
7695 * end of the line. We must do this now in two ways :
7696 * - if some cookies must be preserved, we only delete from the
7697 * mark to the end of line ;
7698 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7699 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7700 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7701 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7702 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7703 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7704 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7705 cur_hdr->len += delta;
7706 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7707 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7708
7709 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7710 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7711 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7712 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7713 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7714 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7715 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7716 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7717 }
7718
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7719 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7720 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7721 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7722}
7723
7724
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7725/* Iterate the same filter through all response headers contained in <rtr>.
7726 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7727 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7728int 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]7729{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7730 char *cur_ptr, *cur_end, *cur_next;
7731 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7732 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7733 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7734 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7735
7736 last_hdr = 0;
7737
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7738 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7739 old_idx = 0;
7740
7741 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7742 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7743 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7744 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7745 (exp->action == ACT_ALLOW ||
7746 exp->action == ACT_DENY))
7747 return 0;
7748
7749 cur_idx = txn->hdr_idx.v[old_idx].next;
7750 if (!cur_idx)
7751 break;
7752
7753 cur_hdr = &txn->hdr_idx.v[cur_idx];
7754 cur_ptr = cur_next;
7755 cur_end = cur_ptr + cur_hdr->len;
7756 cur_next = cur_end + cur_hdr->cr + 1;
7757
7758 /* Now we have one header between cur_ptr and cur_end,
7759 * and the next header starts at cur_next.
7760 */
7761
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7762 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]7763 switch (exp->action) {
7764 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7765 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7766 last_hdr = 1;
7767 break;
7768
7769 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7770 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7771 last_hdr = 1;
7772 break;
7773
7774 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7775 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7776 if (trash.len < 0)
7777 return -1;
7778
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7779 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7780 /* FIXME: if the user adds a newline in the replacement, the
7781 * index will not be recalculated for now, and the new line
7782 * will not be counted as a new header.
7783 */
7784
7785 cur_end += delta;
7786 cur_next += delta;
7787 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7788 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7789 break;
7790
7791 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7792 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7793 cur_next += delta;
7794
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7795 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7796 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7797 txn->hdr_idx.used--;
7798 cur_hdr->len = 0;
7799 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7800 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7801 break;
7802
7803 }
7804 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7805
7806 /* keep the link from this header to next one in case of later
7807 * removal of next header.
7808 */
7809 old_idx = cur_idx;
7810 }
7811 return 0;
7812}
7813
7814
7815/* Apply the filter to the status line in the response buffer <rtr>.
7816 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7817 * or -1 if a replacement resulted in an invalid status line.
7818 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7819int 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]7820{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7821 char *cur_ptr, *cur_end;
7822 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7823 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7824 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7825
7826
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7827 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7828 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7829 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7830 (exp->action == ACT_ALLOW ||
7831 exp->action == ACT_DENY))
7832 return 0;
7833 else if (exp->action == ACT_REMOVE)
7834 return 0;
7835
7836 done = 0;
7837
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7838 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7839 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7840
7841 /* Now we have the status line between cur_ptr and cur_end */
7842
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7843 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]7844 switch (exp->action) {
7845 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7846 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7847 done = 1;
7848 break;
7849
7850 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7851 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7852 done = 1;
7853 break;
7854
7855 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7856 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7857 if (trash.len < 0)
7858 return -1;
7859
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7860 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7861 /* FIXME: if the user adds a newline in the replacement, the
7862 * index will not be recalculated for now, and the new line
7863 * will not be counted as a new header.
7864 */
7865
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7866 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7867 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7868 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7869 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7870 cur_ptr, cur_end + 1,
7871 NULL, NULL);
7872 if (unlikely(!cur_end))
7873 return -1;
7874
7875 /* we have a full respnse and we know that we have either a CR
7876 * or an LF at <ptr>.
7877 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7878 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]7879 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]7880 /* there is no point trying this regex on headers */
7881 return 1;
7882 }
7883 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7884 return done;
7885}
7886
7887
7888
7889/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7890 * 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]7891 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7892 * unparsable response.
7893 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7894int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7895{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7896 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7897 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7898 struct hdr_exp *exp;
7899
7900 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7901 int ret;
7902
7903 /*
7904 * The interleaving of transformations and verdicts
7905 * makes it difficult to decide to continue or stop
7906 * the evaluation.
7907 */
7908
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7909 if (txn->flags & TX_SVDENY)
7910 break;
7911
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7912 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7913 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7914 exp->action == ACT_PASS)) {
7915 exp = exp->next;
7916 continue;
7917 }
7918
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7919 /* if this filter had a condition, evaluate it now and skip to
7920 * next filter if the condition does not match.
7921 */
7922 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7923 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]7924 ret = acl_pass(ret);
7925 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7926 ret = !ret;
7927 if (!ret)
7928 continue;
7929 }
7930
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7931 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7932 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7933 if (unlikely(ret < 0))
7934 return -1;
7935
7936 if (likely(ret == 0)) {
7937 /* The filter did not match the response, it can be
7938 * iterated through all headers.
7939 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7940 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
7941 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7942 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7943 }
7944 return 0;
7945}
7946
7947
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7948/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7949 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7950 * desirable to call it only when needed. This function is also used when we
7951 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7952 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7953void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7954{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7955 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7956 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7957 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7958 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7959 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7960 char *hdr_beg, *hdr_end, *hdr_next;
7961 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7962
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7963 /* Iterate through the headers.
7964 * we start with the start line.
7965 */
7966 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7967 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7968
7969 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7970 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7971 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7972
7973 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7974 hdr_beg = hdr_next;
7975 hdr_end = hdr_beg + cur_hdr->len;
7976 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7977
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7978 /* We have one full header between hdr_beg and hdr_end, and the
7979 * next header starts at hdr_next. We're only interested in
7980 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7981 */
7982
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7983 is_cookie2 = 0;
7984 prev = hdr_beg + 10;
7985 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7986 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7987 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7988 if (!val) {
7989 old_idx = cur_idx;
7990 continue;
7991 }
7992 is_cookie2 = 1;
7993 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7994 }
7995
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7996 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7997 * <prev> points to the colon.
7998 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7999 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8000
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8001 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8002 * check-cache is enabled) and we are not interested in checking
8003 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8004 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]8005 if (s->be->cookie_name == NULL && sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8006 return;
8007
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8008 /* OK so now we know we have to process this response cookie.
8009 * The format of the Set-Cookie header is slightly different
8010 * from the format of the Cookie header in that it does not
8011 * support the comma as a cookie delimiter (thus the header
8012 * cannot be folded) because the Expires attribute described in
8013 * the original Netscape's spec may contain an unquoted date
8014 * with a comma inside. We have to live with this because
8015 * many browsers don't support Max-Age and some browsers don't
8016 * support quoted strings. However the Set-Cookie2 header is
8017 * clean.
8018 *
8019 * We have to keep multiple pointers in order to support cookie
8020 * removal at the beginning, middle or end of header without
8021 * corrupting the header (in case of set-cookie2). A special
8022 * pointer, <scav> points to the beginning of the set-cookie-av
8023 * fields after the first semi-colon. The <next> pointer points
8024 * either to the end of line (set-cookie) or next unquoted comma
8025 * (set-cookie2). All of these headers are valid :
8026 *
8027 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8028 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8029 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8030 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8031 * | | | | | | | | | |
8032 * | | | | | | | | +-> next hdr_end <--+
8033 * | | | | | | | +------------> scav
8034 * | | | | | | +--------------> val_end
8035 * | | | | | +--------------------> val_beg
8036 * | | | | +----------------------> equal
8037 * | | | +------------------------> att_end
8038 * | | +----------------------------> att_beg
8039 * | +------------------------------> prev
8040 * +-----------------------------------------> hdr_beg
8041 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8042
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8043 for (; prev < hdr_end; prev = next) {
8044 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8045
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8046 /* find att_beg */
8047 att_beg = prev + 1;
8048 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8049 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8050
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8051 /* find att_end : this is the first character after the last non
8052 * space before the equal. It may be equal to hdr_end.
8053 */
8054 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8055
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8056 while (equal < hdr_end) {
8057 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8058 break;
8059 if (http_is_spht[(unsigned char)*equal++])
8060 continue;
8061 att_end = equal;
8062 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8063
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8064 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8065 * is between <att_beg> and <equal>, both may be identical.
8066 */
8067
8068 /* look for end of cookie if there is an equal sign */
8069 if (equal < hdr_end && *equal == '=') {
8070 /* look for the beginning of the value */
8071 val_beg = equal + 1;
8072 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8073 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8074
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8075 /* find the end of the value, respecting quotes */
8076 next = find_cookie_value_end(val_beg, hdr_end);
8077
8078 /* make val_end point to the first white space or delimitor after the value */
8079 val_end = next;
8080 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8081 val_end--;
8082 } else {
8083 /* <equal> points to next comma, semi-colon or EOL */
8084 val_beg = val_end = next = equal;
8085 }
8086
8087 if (next < hdr_end) {
8088 /* Set-Cookie2 supports multiple cookies, and <next> points to
8089 * a colon or semi-colon before the end. So skip all attr-value
8090 * pairs and look for the next comma. For Set-Cookie, since
8091 * commas are permitted in values, skip to the end.
8092 */
8093 if (is_cookie2)
8094 next = find_hdr_value_end(next, hdr_end);
8095 else
8096 next = hdr_end;
8097 }
8098
8099 /* Now everything is as on the diagram above */
8100
8101 /* Ignore cookies with no equal sign */
8102 if (equal == val_end)
8103 continue;
8104
8105 /* If there are spaces around the equal sign, we need to
8106 * strip them otherwise we'll get trouble for cookie captures,
8107 * or even for rewrites. Since this happens extremely rarely,
8108 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8109 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8110 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8111 int stripped_before = 0;
8112 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8113
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8114 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8115 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8116 equal += stripped_before;
8117 val_beg += stripped_before;
8118 }
8119
8120 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8121 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8122 val_beg += stripped_after;
8123 stripped_before += stripped_after;
8124 }
8125
8126 val_end += stripped_before;
8127 next += stripped_before;
8128 hdr_end += stripped_before;
8129 hdr_next += stripped_before;
8130 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8131 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8132 }
8133
8134 /* First, let's see if we want to capture this cookie. We check
8135 * that we don't already have a server side cookie, because we
8136 * can only capture one. Also as an optimisation, we ignore
8137 * cookies shorter than the declared name.
8138 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8139 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8140 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8141 (val_end - att_beg >= sess->fe->capture_namelen) &&
8142 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8143 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8144 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8145 Alert("HTTP logging : out of memory.\n");
8146 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8147 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8148 if (log_len > sess->fe->capture_len)
8149 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8150 memcpy(txn->srv_cookie, att_beg, log_len);
8151 txn->srv_cookie[log_len] = 0;
8152 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8153 }
8154
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8155 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8156 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8157 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8158 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8159 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8160 /* assume passive cookie by default */
8161 txn->flags &= ~TX_SCK_MASK;
8162 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8163
8164 /* If the cookie is in insert mode on a known server, we'll delete
8165 * this occurrence because we'll insert another one later.
8166 * 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]8167 * a direct access.
8168 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8169 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8170 /* The "preserve" flag was set, we don't want to touch the
8171 * server's cookie.
8172 */
8173 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8174 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8175 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8176 /* this cookie must be deleted */
8177 if (*prev == ':' && next == hdr_end) {
8178 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8179 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8180 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8181 txn->hdr_idx.used--;
8182 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8183 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8184 hdr_next += delta;
8185 http_msg_move_end(&txn->rsp, delta);
8186 /* note: while both invalid now, <next> and <hdr_end>
8187 * are still equal, so the for() will stop as expected.
8188 */
8189 } else {
8190 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8191 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8192 next = prev;
8193 hdr_end += delta;
8194 hdr_next += delta;
8195 cur_hdr->len += delta;
8196 http_msg_move_end(&txn->rsp, delta);
8197 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8198 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8199 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8200 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8201 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8202 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8203 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8204 * with this server since we know it.
8205 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8206 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8207 next += delta;
8208 hdr_end += delta;
8209 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8210 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8211 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8212
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8213 txn->flags &= ~TX_SCK_MASK;
8214 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8215 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8216 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8217 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8218 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8219 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8220 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8221 next += delta;
8222 hdr_end += delta;
8223 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8224 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8225 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8226
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8227 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8228 txn->flags &= ~TX_SCK_MASK;
8229 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8230 }
8231 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8232 /* that's done for this cookie, check the next one on the same
8233 * line when next != hdr_end (only if is_cookie2).
8234 */
8235 }
8236 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8237 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8238 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8239}
8240
8241
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8242/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8243 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8244 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8245void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8246{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8247 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8248 char *p1, *p2;
8249
8250 char *cur_ptr, *cur_end, *cur_next;
8251 int cur_idx;
8252
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8253 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8254 return;
8255
8256 /* Iterate through the headers.
8257 * we start with the start line.
8258 */
8259 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8260 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8261
8262 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8263 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8264 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8265
8266 cur_hdr = &txn->hdr_idx.v[cur_idx];
8267 cur_ptr = cur_next;
8268 cur_end = cur_ptr + cur_hdr->len;
8269 cur_next = cur_end + cur_hdr->cr + 1;
8270
8271 /* We have one full header between cur_ptr and cur_end, and the
8272 * next header starts at cur_next. We're only interested in
8273 * "Cookie:" headers.
8274 */
8275
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8276 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8277 if (val) {
8278 if ((cur_end - (cur_ptr + val) >= 8) &&
8279 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8280 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8281 return;
8282 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8283 }
8284
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8285 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8286 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8287 continue;
8288
8289 /* OK, right now we know we have a cache-control header at cur_ptr */
8290
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8291 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8292
8293 if (p1 >= cur_end) /* no more info */
8294 continue;
8295
8296 /* p1 is at the beginning of the value */
8297 p2 = p1;
8298
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8299 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8300 p2++;
8301
8302 /* we have a complete value between p1 and p2 */
8303 if (p2 < cur_end && *p2 == '=') {
8304 /* we have something of the form no-cache="set-cookie" */
8305 if ((cur_end - p1 >= 21) &&
8306 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8307 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8308 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8309 continue;
8310 }
8311
8312 /* OK, so we know that either p2 points to the end of string or to a comma */
8313 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8314 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8315 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8316 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8317 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8318 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8319 return;
8320 }
8321
8322 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8323 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8324 continue;
8325 }
8326 }
8327}
8328
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8329
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8330/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8331 * 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]8332 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8333 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8334 * 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]8335 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8336 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8337 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8338 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8339int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8340{
8341 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8342 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8343 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8344
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8345 if (!uri_auth)
8346 return 0;
8347
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8348 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]8349 return 0;
8350
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8351 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8352 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8353 return 0;
8354
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8355 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8356 return 0;
8357
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8358 return 1;
8359}
8360
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8361/*
8362 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8363 * By default it tries to report the error position as msg->err_pos. However if
8364 * this one is not set, it will then report msg->next, which is the last known
8365 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8366 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8367 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8368void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8369 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8370 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8371{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8372 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8373 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8374 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8375
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8376 es->len = MIN(chn->buf->i, sizeof(es->buf));
8377 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8378 len1 = MIN(len1, es->len);
8379 len2 = es->len - len1; /* remaining data if buffer wraps */
8380
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8381 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8382 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8383 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8384
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8385 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8386 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8387 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8388 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8389
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8390 es->when = date; // user-visible date
8391 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8392 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8393 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8394 if (objt_conn(sess->origin))
8395 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8396 else
8397 memset(&es->src, 0, sizeof(es->src));
8398
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8399 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8400 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8401 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8402 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8403 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8404 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8405 es->b_out = chn->buf->o;
8406 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8407 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8408 es->m_clen = msg->chunk_len;
8409 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8410}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8411
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8412/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8413 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8414 * performed over the whole headers. Otherwise it must contain a valid header
8415 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8416 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8417 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8418 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8419 * -1. The value fetch stops at commas, so this function is suited for use with
8420 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8421 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8422 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8423unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8424 struct hdr_idx *idx, int occ,
8425 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8426{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8427 struct hdr_ctx local_ctx;
8428 char *ptr_hist[MAX_HDR_HISTORY];
8429 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8430 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8431 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8432
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8433 if (!ctx) {
8434 local_ctx.idx = 0;
8435 ctx = &local_ctx;
8436 }
8437
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8438 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8439 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8440 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8441 occ--;
8442 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8443 *vptr = ctx->line + ctx->val;
8444 *vlen = ctx->vlen;
8445 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8446 }
8447 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8448 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8449 }
8450
8451 /* negative occurrence, we scan all the list then walk back */
8452 if (-occ > MAX_HDR_HISTORY)
8453 return 0;
8454
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8455 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8456 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8457 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8458 len_hist[hist_ptr] = ctx->vlen;
8459 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8460 hist_ptr = 0;
8461 found++;
8462 }
8463 if (-occ > found)
8464 return 0;
8465 /* 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]8466 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8467 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8468 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8469 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8470 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8471 if (hist_ptr >= MAX_HDR_HISTORY)
8472 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8473 *vptr = ptr_hist[hist_ptr];
8474 *vlen = len_hist[hist_ptr];
8475 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8476}
8477
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8478/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8479 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8480 * performed over the whole headers. Otherwise it must contain a valid header
8481 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8482 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8483 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8484 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8485 * -1. This function differs from http_get_hdr() in that it only returns full
8486 * line header values and does not stop at commas.
8487 * The return value is 0 if nothing was found, or non-zero otherwise.
8488 */
8489unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8490 struct hdr_idx *idx, int occ,
8491 struct hdr_ctx *ctx, char **vptr, int *vlen)
8492{
8493 struct hdr_ctx local_ctx;
8494 char *ptr_hist[MAX_HDR_HISTORY];
8495 int len_hist[MAX_HDR_HISTORY];
8496 unsigned int hist_ptr;
8497 int found;
8498
8499 if (!ctx) {
8500 local_ctx.idx = 0;
8501 ctx = &local_ctx;
8502 }
8503
8504 if (occ >= 0) {
8505 /* search from the beginning */
8506 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8507 occ--;
8508 if (occ <= 0) {
8509 *vptr = ctx->line + ctx->val;
8510 *vlen = ctx->vlen;
8511 return 1;
8512 }
8513 }
8514 return 0;
8515 }
8516
8517 /* negative occurrence, we scan all the list then walk back */
8518 if (-occ > MAX_HDR_HISTORY)
8519 return 0;
8520
8521 found = hist_ptr = 0;
8522 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8523 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8524 len_hist[hist_ptr] = ctx->vlen;
8525 if (++hist_ptr >= MAX_HDR_HISTORY)
8526 hist_ptr = 0;
8527 found++;
8528 }
8529 if (-occ > found)
8530 return 0;
8531 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8532 * find occurrence -occ, so we have to check [hist_ptr+occ].
8533 */
8534 hist_ptr += occ;
8535 if (hist_ptr >= MAX_HDR_HISTORY)
8536 hist_ptr -= MAX_HDR_HISTORY;
8537 *vptr = ptr_hist[hist_ptr];
8538 *vlen = len_hist[hist_ptr];
8539 return 1;
8540}
8541
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8542/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8543 * Print a debug line with a header. Always stop at the first CR or LF char,
8544 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8545 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8546 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8547void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8548{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8549 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8550 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8551
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8552 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8553 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8554 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8555 objt_conn(s->si[1].end) ? (unsigned short)objt_conn(s->si[1].end)->t.sock.fd : -1);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8556
8557 for (max = 0; start + max < end; max++)
8558 if (start[max] == '\r' || start[max] == '\n')
8559 break;
8560
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8561 UBOUND(max, trash.size - trash.len - 3);
8562 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8563 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8564 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8565}
8566
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8567
8568/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8569 * The hdr_idx is allocated as well. In case of allocation failure, everything
8570 * allocated is freed and NULL is returned. Otherwise the new transaction is
8571 * assigned to the stream and returned.
8572 */
8573struct http_txn *http_alloc_txn(struct stream *s)
8574{
8575 struct http_txn *txn = s->txn;
8576
8577 if (txn)
8578 return txn;
8579
8580 txn = pool_alloc2(pool2_http_txn);
8581 if (!txn)
8582 return txn;
8583
8584 txn->hdr_idx.size = global.tune.max_http_hdr;
8585 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8586 if (!txn->hdr_idx.v) {
8587 pool_free2(pool2_http_txn, txn);
8588 return NULL;
8589 }
8590
8591 s->txn = txn;
8592 return txn;
8593}
8594
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8595void http_txn_reset_req(struct http_txn *txn)
8596{
8597 txn->req.flags = 0;
8598 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
8599 txn->req.next = 0;
8600 txn->req.chunk_len = 0LL;
8601 txn->req.body_len = 0LL;
8602 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8603}
8604
8605void http_txn_reset_res(struct http_txn *txn)
8606{
8607 txn->rsp.flags = 0;
8608 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
8609 txn->rsp.next = 0;
8610 txn->rsp.chunk_len = 0LL;
8611 txn->rsp.body_len = 0LL;
8612 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
8613}
8614
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8615/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8616 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8617 * the required fields are properly allocated and that we only need to (re)init
8618 * them. This should be used before processing any new request.
8619 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8620void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8621{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8622 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8623 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8624
8625 txn->flags = 0;
8626 txn->status = -1;
8627
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8628 txn->cookie_first_date = 0;
8629 txn->cookie_last_date = 0;
8630
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8631 txn->srv_cookie = NULL;
8632 txn->cli_cookie = NULL;
8633 txn->uri = NULL;
8634
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8635 http_txn_reset_req(txn);
8636 http_txn_reset_res(txn);
8637
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8638 txn->req.chn = &s->req;
8639 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8640
8641 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8642
8643 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8644 if (fe->options2 & PR_O2_REQBUG_OK)
8645 txn->req.err_pos = -1; /* let buggy requests pass */
8646
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8647 if (txn->hdr_idx.v)
8648 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]8649
8650 vars_init(&s->vars_txn, SCOPE_TXN);
8651 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8652}
8653
8654/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8655void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8656{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8657 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8658 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8659
8660 /* these ones will have been dynamically allocated */
8661 pool_free2(pool2_requri, txn->uri);
8662 pool_free2(pool2_capture, txn->cli_cookie);
8663 pool_free2(pool2_capture, txn->srv_cookie);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8664 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8665
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8666 s->unique_id = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8667 txn->uri = NULL;
8668 txn->srv_cookie = NULL;
8669 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8670
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8671 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8672 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8673 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8674 pool_free2(h->pool, s->req_cap[h->index]);
8675 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8676 }
8677
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8678 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8679 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8680 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8681 pool_free2(h->pool, s->res_cap[h->index]);
8682 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8683 }
8684
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]8685 vars_prune(&s->vars_txn, s);
8686 vars_prune(&s->vars_reqres, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8687}
8688
8689/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8690void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8691{
8692 http_end_txn(s);
8693 http_init_txn(s);
8694
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]8695 /* reinitialise the current rule list pointer to NULL. We are sure that
8696 * any rulelist match the NULL pointer.
8697 */
8698 s->current_rule_list = NULL;
8699
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8700 s->be = strm_fe(s);
8701 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8702 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8703 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8704 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8705 /* re-init store persistence */
8706 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8707 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8708
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8709 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8710
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8711 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8712
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8713 /* We must trim any excess data from the response buffer, because we
8714 * may have blocked an invalid response from a server that we don't
8715 * want to accidentely forward once we disable the analysers, nor do
8716 * we want those data to come along with next response. A typical
8717 * example of such data would be from a buggy server responding to
8718 * a HEAD with some data, or sending more than the advertised
8719 * content-length.
8720 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8721 if (unlikely(s->res.buf->i))
8722 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8723
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8724 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8725 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8726
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8727 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8728 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8729
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8730 s->req.rex = TICK_ETERNITY;
8731 s->req.wex = TICK_ETERNITY;
8732 s->req.analyse_exp = TICK_ETERNITY;
8733 s->res.rex = TICK_ETERNITY;
8734 s->res.wex = TICK_ETERNITY;
8735 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8736}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8737
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8738void free_http_res_rules(struct list *r)
8739{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8740 struct act_rule *tr, *pr;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8741
8742 list_for_each_entry_safe(pr, tr, r, list) {
8743 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8744 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8745 free(pr);
8746 }
8747}
8748
8749void free_http_req_rules(struct list *r)
8750{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8751 struct act_rule *tr, *pr;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8752
8753 list_for_each_entry_safe(pr, tr, r, list) {
8754 LIST_DEL(&pr->list);
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8755 if (pr->action == ACT_HTTP_REQ_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8756 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8757
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8758 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8759 free(pr);
8760 }
8761}
8762
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8763/* parse an "http-request" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8764struct 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]8765{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8766 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]8767 struct action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8768 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8769 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8770
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8771 rule = (struct act_rule*)calloc(1, sizeof(struct act_rule));
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8772 if (!rule) {
8773 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8774 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8775 }
8776
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8777 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8778 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8779 rule->action = ACT_ACTION_ALLOW;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8780 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8781 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8782 int code;
8783 int hc;
8784
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8785 rule->action = ACT_ACTION_DENY;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8786 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8787 if (strcmp(args[cur_arg], "deny_status") == 0) {
8788 cur_arg++;
8789 if (!args[cur_arg]) {
8790 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
8791 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
8792 goto out_err;
8793 }
8794
8795 code = atol(args[cur_arg]);
8796 cur_arg++;
8797 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
8798 if (http_err_codes[hc] == code) {
8799 rule->deny_status = hc;
8800 break;
8801 }
8802 }
8803
8804 if (hc >= HTTP_ERR_SIZE) {
8805 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
8806 file, linenum, code);
8807 }
8808 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8809 } else if (!strcmp(args[0], "tarpit")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8810 rule->action = ACT_HTTP_REQ_TARPIT;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8811 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8812 } else if (!strcmp(args[0], "auth")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8813 rule->action = ACT_HTTP_REQ_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8814 cur_arg = 1;
8815
8816 while(*args[cur_arg]) {
8817 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8818 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8819 cur_arg+=2;
8820 continue;
8821 } else
8822 break;
8823 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8824 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8825 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8826 cur_arg = 1;
8827
8828 if (!*args[cur_arg] ||
8829 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8830 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8831 file, linenum, args[0]);
8832 goto out_err;
8833 }
8834 rule->arg.nice = atoi(args[cur_arg]);
8835 if (rule->arg.nice < -1024)
8836 rule->arg.nice = -1024;
8837 else if (rule->arg.nice > 1024)
8838 rule->arg.nice = 1024;
8839 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8840 } else if (!strcmp(args[0], "set-tos")) {
8841#ifdef IP_TOS
8842 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8843 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8844 cur_arg = 1;
8845
8846 if (!*args[cur_arg] ||
8847 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8848 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8849 file, linenum, args[0]);
8850 goto out_err;
8851 }
8852
8853 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8854 if (err && *err != '\0') {
8855 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8856 file, linenum, err, args[0]);
8857 goto out_err;
8858 }
8859 cur_arg++;
8860#else
8861 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8862 goto out_err;
8863#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8864 } else if (!strcmp(args[0], "set-mark")) {
8865#ifdef SO_MARK
8866 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8867 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8868 cur_arg = 1;
8869
8870 if (!*args[cur_arg] ||
8871 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8872 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8873 file, linenum, args[0]);
8874 goto out_err;
8875 }
8876
8877 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8878 if (err && *err != '\0') {
8879 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8880 file, linenum, err, args[0]);
8881 goto out_err;
8882 }
8883 cur_arg++;
8884 global.last_checks |= LSTCHK_NETADM;
8885#else
8886 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8887 goto out_err;
8888#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8889 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8890 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8891 cur_arg = 1;
8892
8893 if (!*args[cur_arg] ||
8894 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8895 bad_log_level:
8896 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8897 file, linenum, args[0]);
8898 goto out_err;
8899 }
8900 if (strcmp(args[cur_arg], "silent") == 0)
8901 rule->arg.loglevel = -1;
8902 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8903 goto bad_log_level;
8904 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8905 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8906 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8907 cur_arg = 1;
8908
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8909 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8910 (*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]8911 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8912 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8913 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8914 }
8915
8916 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8917 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8918 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8919
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8920 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8921 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]8922 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8923 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8924 free(proxy->conf.lfs_file);
8925 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8926 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8927 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]8928 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8929 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8930 cur_arg = 1;
8931
8932 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]8933 (*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]8934 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
8935 file, linenum, args[0]);
8936 goto out_err;
8937 }
8938
8939 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8940 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8941 LIST_INIT(&rule->arg.hdr_add.fmt);
8942
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8943 error = NULL;
8944 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
8945 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
8946 args[cur_arg + 1], error);
8947 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8948 goto out_err;
8949 }
8950
8951 proxy->conf.args.ctx = ARGC_HRQ;
8952 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
8953 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8954 file, linenum);
8955
8956 free(proxy->conf.lfs_file);
8957 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8958 proxy->conf.lfs_line = proxy->conf.args.line;
8959 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8960 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8961 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8962 cur_arg = 1;
8963
8964 if (!*args[cur_arg] ||
8965 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8966 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
8967 file, linenum, args[0]);
8968 goto out_err;
8969 }
8970
8971 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8972 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8973
8974 proxy->conf.args.ctx = ARGC_HRQ;
8975 free(proxy->conf.lfs_file);
8976 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8977 proxy->conf.lfs_line = proxy->conf.args.line;
8978 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]8979 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
8980 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]8981 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]8982 struct sample_expr *expr;
8983 unsigned int where;
8984 char *err = NULL;
8985
8986 cur_arg = 1;
8987 proxy->conf.args.ctx = ARGC_TRK;
8988
8989 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
8990 if (!expr) {
8991 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8992 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
8993 free(err);
8994 goto out_err;
8995 }
8996
8997 where = 0;
8998 if (proxy->cap & PR_CAP_FE)
8999 where |= SMP_VAL_FE_HRQ_HDR;
9000 if (proxy->cap & PR_CAP_BE)
9001 where |= SMP_VAL_BE_HRQ_HDR;
9002
9003 if (!(expr->fetch->val & where)) {
9004 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9005 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9006 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9007 args[cur_arg-1], sample_src_names(expr->fetch->use));
9008 free(expr);
9009 goto out_err;
9010 }
9011
9012 if (strcmp(args[cur_arg], "table") == 0) {
9013 cur_arg++;
9014 if (!args[cur_arg]) {
9015 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9016 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9017 free(expr);
9018 goto out_err;
9019 }
9020 /* we copy the table name for now, it will be resolved later */
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9021 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9022 cur_arg++;
9023 }
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9024 rule->arg.trk_ctr.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9025 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9026 } else if (strcmp(args[0], "redirect") == 0) {
9027 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9028 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9029
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9030 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]9031 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9032 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9033 goto out_err;
9034 }
9035
9036 /* this redirect rule might already contain a parsed condition which
9037 * we'll pass to the http-request rule.
9038 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9039 rule->action = ACT_HTTP_REDIR;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9040 rule->arg.redir = redir;
9041 rule->cond = redir->cond;
9042 redir->cond = NULL;
9043 cur_arg = 2;
9044 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9045 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9046 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9047 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9048 /*
9049 * '+ 8' for 'add-acl('
9050 * '- 9' for 'add-acl(' + trailing ')'
9051 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9052 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9053
9054 cur_arg = 1;
9055
9056 if (!*args[cur_arg] ||
9057 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9058 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9059 file, linenum, args[0]);
9060 goto out_err;
9061 }
9062
9063 LIST_INIT(&rule->arg.map.key);
9064 proxy->conf.args.ctx = ARGC_HRQ;
9065 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9066 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9067 file, linenum);
9068 free(proxy->conf.lfs_file);
9069 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9070 proxy->conf.lfs_line = proxy->conf.args.line;
9071 cur_arg += 1;
9072 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9073 /* http-request del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9074 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9075 /*
9076 * '+ 8' for 'del-acl('
9077 * '- 9' for 'del-acl(' + trailing ')'
9078 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9079 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9080
9081 cur_arg = 1;
9082
9083 if (!*args[cur_arg] ||
9084 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9085 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9086 file, linenum, args[0]);
9087 goto out_err;
9088 }
9089
9090 LIST_INIT(&rule->arg.map.key);
9091 proxy->conf.args.ctx = ARGC_HRQ;
9092 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9093 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9094 file, linenum);
9095 free(proxy->conf.lfs_file);
9096 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9097 proxy->conf.lfs_line = proxy->conf.args.line;
9098 cur_arg += 1;
9099 } else if (strncmp(args[0], "del-map", 7) == 0) {
9100 /* http-request del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9101 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9102 /*
9103 * '+ 8' for 'del-map('
9104 * '- 9' for 'del-map(' + trailing ')'
9105 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9106 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9107
9108 cur_arg = 1;
9109
9110 if (!*args[cur_arg] ||
9111 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9112 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9113 file, linenum, args[0]);
9114 goto out_err;
9115 }
9116
9117 LIST_INIT(&rule->arg.map.key);
9118 proxy->conf.args.ctx = ARGC_HRQ;
9119 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9120 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9121 file, linenum);
9122 free(proxy->conf.lfs_file);
9123 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9124 proxy->conf.lfs_line = proxy->conf.args.line;
9125 cur_arg += 1;
9126 } else if (strncmp(args[0], "set-map", 7) == 0) {
9127 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9128 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9129 /*
9130 * '+ 8' for 'set-map('
9131 * '- 9' for 'set-map(' + trailing ')'
9132 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9133 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9134
9135 cur_arg = 1;
9136
9137 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9138 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9139 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9140 file, linenum, args[0]);
9141 goto out_err;
9142 }
9143
9144 LIST_INIT(&rule->arg.map.key);
9145 LIST_INIT(&rule->arg.map.value);
9146 proxy->conf.args.ctx = ARGC_HRQ;
9147
9148 /* key pattern */
9149 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9150 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9151 file, linenum);
9152
9153 /* value pattern */
9154 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9155 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9156 file, linenum);
9157 free(proxy->conf.lfs_file);
9158 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9159 proxy->conf.lfs_line = proxy->conf.args.line;
9160
9161 cur_arg += 2;
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]9162 } else if (strncmp(args[0], "set-src", 7) == 0) {
9163 struct sample_expr *expr;
9164 unsigned int where;
9165 char *err = NULL;
9166
9167 cur_arg = 1;
9168 proxy->conf.args.ctx = ARGC_HRQ;
9169
9170 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9171 if (!expr) {
9172 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9173 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9174 free(err);
9175 goto out_err;
9176 }
9177
9178 where = 0;
9179 if (proxy->cap & PR_CAP_FE)
9180 where |= SMP_VAL_FE_HRQ_HDR;
9181 if (proxy->cap & PR_CAP_BE)
9182 where |= SMP_VAL_BE_HRQ_HDR;
9183
9184 if (!(expr->fetch->val & where)) {
9185 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9186 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9187 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9188 args[cur_arg-1], sample_src_names(expr->fetch->use));
9189 free(expr);
9190 goto out_err;
9191 }
9192
Thierry FOURNIERa002dc92015-07-31 08:50:51 +0200[diff] [blame]9193 rule->arg.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9194 rule->action = ACT_HTTP_REQ_SET_SRC;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9195 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9196 char *errmsg = NULL;
9197 cur_arg = 1;
9198 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9199 rule->from = ACT_F_HTTP_REQ;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9200 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9201 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9202 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9203 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9204 free(errmsg);
9205 goto out_err;
9206 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9207 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9208 action_build_list(&http_req_keywords.list, &trash);
9209 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', "
9210 "'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
9211 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', "
9212 "'set-src'%s%s, but got '%s'%s.\n",
9213 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9214 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9215 }
9216
9217 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9218 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9219 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9220
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9221 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9222 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9223 file, linenum, args[0], errmsg);
9224 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9225 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9226 }
9227 rule->cond = cond;
9228 }
9229 else if (*args[cur_arg]) {
9230 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9231 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9232 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9233 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9234 }
9235
9236 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9237 out_err:
9238 free(rule);
9239 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9240}
9241
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9242/* parse an "http-respose" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9243struct 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]9244{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9245 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]9246 struct action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9247 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9248 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9249
9250 rule = calloc(1, sizeof(*rule));
9251 if (!rule) {
9252 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9253 goto out_err;
9254 }
9255
9256 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9257 rule->action = ACT_ACTION_ALLOW;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9258 cur_arg = 1;
9259 } else if (!strcmp(args[0], "deny")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9260 rule->action = ACT_ACTION_DENY;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9261 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9262 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9263 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9264 cur_arg = 1;
9265
9266 if (!*args[cur_arg] ||
9267 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9268 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9269 file, linenum, args[0]);
9270 goto out_err;
9271 }
9272 rule->arg.nice = atoi(args[cur_arg]);
9273 if (rule->arg.nice < -1024)
9274 rule->arg.nice = -1024;
9275 else if (rule->arg.nice > 1024)
9276 rule->arg.nice = 1024;
9277 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9278 } else if (!strcmp(args[0], "set-tos")) {
9279#ifdef IP_TOS
9280 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9281 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9282 cur_arg = 1;
9283
9284 if (!*args[cur_arg] ||
9285 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9286 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9287 file, linenum, args[0]);
9288 goto out_err;
9289 }
9290
9291 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9292 if (err && *err != '\0') {
9293 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9294 file, linenum, err, args[0]);
9295 goto out_err;
9296 }
9297 cur_arg++;
9298#else
9299 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9300 goto out_err;
9301#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9302 } else if (!strcmp(args[0], "set-mark")) {
9303#ifdef SO_MARK
9304 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9305 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9306 cur_arg = 1;
9307
9308 if (!*args[cur_arg] ||
9309 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9310 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9311 file, linenum, args[0]);
9312 goto out_err;
9313 }
9314
9315 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9316 if (err && *err != '\0') {
9317 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9318 file, linenum, err, args[0]);
9319 goto out_err;
9320 }
9321 cur_arg++;
9322 global.last_checks |= LSTCHK_NETADM;
9323#else
9324 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9325 goto out_err;
9326#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9327 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9328 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9329 cur_arg = 1;
9330
9331 if (!*args[cur_arg] ||
9332 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9333 bad_log_level:
9334 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9335 file, linenum, args[0]);
9336 goto out_err;
9337 }
9338 if (strcmp(args[cur_arg], "silent") == 0)
9339 rule->arg.loglevel = -1;
9340 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9341 goto bad_log_level;
9342 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9343 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9344 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9345 cur_arg = 1;
9346
9347 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9348 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9349 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9350 file, linenum, args[0]);
9351 goto out_err;
9352 }
9353
9354 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9355 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9356 LIST_INIT(&rule->arg.hdr_add.fmt);
9357
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9358 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9359 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]9360 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9361 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9362 free(proxy->conf.lfs_file);
9363 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9364 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9365 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9366 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9367 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9368 cur_arg = 1;
9369
9370 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9371 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9372 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9373 file, linenum, args[0]);
9374 goto out_err;
9375 }
9376
9377 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9378 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9379 LIST_INIT(&rule->arg.hdr_add.fmt);
9380
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9381 error = NULL;
9382 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9383 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9384 args[cur_arg + 1], error);
9385 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9386 goto out_err;
9387 }
9388
9389 proxy->conf.args.ctx = ARGC_HRQ;
9390 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9391 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9392 file, linenum);
9393
9394 free(proxy->conf.lfs_file);
9395 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9396 proxy->conf.lfs_line = proxy->conf.args.line;
9397 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9398 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9399 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9400 cur_arg = 1;
9401
9402 if (!*args[cur_arg] ||
9403 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9404 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9405 file, linenum, args[0]);
9406 goto out_err;
9407 }
9408
9409 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9410 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9411
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9412 proxy->conf.args.ctx = ARGC_HRS;
9413 free(proxy->conf.lfs_file);
9414 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9415 proxy->conf.lfs_line = proxy->conf.args.line;
9416 cur_arg += 1;
9417 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9418 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9419 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9420 /*
9421 * '+ 8' for 'add-acl('
9422 * '- 9' for 'add-acl(' + trailing ')'
9423 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9424 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9425
9426 cur_arg = 1;
9427
9428 if (!*args[cur_arg] ||
9429 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9430 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9431 file, linenum, args[0]);
9432 goto out_err;
9433 }
9434
9435 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9436 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9437 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9438 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9439 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9440 free(proxy->conf.lfs_file);
9441 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9442 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9443
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9444 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9445 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9446 /* http-response del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9447 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9448 /*
9449 * '+ 8' for 'del-acl('
9450 * '- 9' for 'del-acl(' + trailing ')'
9451 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9452 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9453
9454 cur_arg = 1;
9455
9456 if (!*args[cur_arg] ||
9457 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9458 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9459 file, linenum, args[0]);
9460 goto out_err;
9461 }
9462
9463 LIST_INIT(&rule->arg.map.key);
9464 proxy->conf.args.ctx = ARGC_HRS;
9465 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9466 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9467 file, linenum);
9468 free(proxy->conf.lfs_file);
9469 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9470 proxy->conf.lfs_line = proxy->conf.args.line;
9471 cur_arg += 1;
9472 } else if (strncmp(args[0], "del-map", 7) == 0) {
9473 /* http-response del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9474 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9475 /*
9476 * '+ 8' for 'del-map('
9477 * '- 9' for 'del-map(' + trailing ')'
9478 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9479 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9480
9481 cur_arg = 1;
9482
9483 if (!*args[cur_arg] ||
9484 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9485 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9486 file, linenum, args[0]);
9487 goto out_err;
9488 }
9489
9490 LIST_INIT(&rule->arg.map.key);
9491 proxy->conf.args.ctx = ARGC_HRS;
9492 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9493 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9494 file, linenum);
9495 free(proxy->conf.lfs_file);
9496 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9497 proxy->conf.lfs_line = proxy->conf.args.line;
9498 cur_arg += 1;
9499 } else if (strncmp(args[0], "set-map", 7) == 0) {
9500 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9501 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9502 /*
9503 * '+ 8' for 'set-map('
9504 * '- 9' for 'set-map(' + trailing ')'
9505 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9506 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9507
9508 cur_arg = 1;
9509
9510 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9511 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9512 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9513 file, linenum, args[0]);
9514 goto out_err;
9515 }
9516
9517 LIST_INIT(&rule->arg.map.key);
9518 LIST_INIT(&rule->arg.map.value);
9519
9520 proxy->conf.args.ctx = ARGC_HRS;
9521
9522 /* key pattern */
9523 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9524 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9525 file, linenum);
9526
9527 /* value pattern */
9528 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9529 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9530 file, linenum);
9531
9532 free(proxy->conf.lfs_file);
9533 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9534 proxy->conf.lfs_line = proxy->conf.args.line;
9535
9536 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9537 } else if (strcmp(args[0], "redirect") == 0) {
9538 struct redirect_rule *redir;
9539 char *errmsg = NULL;
9540
9541 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9542 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9543 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9544 goto out_err;
9545 }
9546
9547 /* this redirect rule might already contain a parsed condition which
9548 * we'll pass to the http-request rule.
9549 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9550 rule->action = ACT_HTTP_REDIR;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9551 rule->arg.redir = redir;
9552 rule->cond = redir->cond;
9553 redir->cond = NULL;
9554 cur_arg = 2;
9555 return rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9556 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9557 char *errmsg = NULL;
9558 cur_arg = 1;
9559 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9560 rule->from = ACT_F_HTTP_RES;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9561 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9562 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9563 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9564 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9565 free(errmsg);
9566 goto out_err;
9567 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9568 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9569 action_build_list(&http_res_keywords.list, &trash);
9570 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', "
9571 "'add-header', 'del-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
9572 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', "
9573 "'set-src'%s%s, but got '%s'%s.\n",
9574 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9575 goto out_err;
9576 }
9577
9578 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9579 struct acl_cond *cond;
9580 char *errmsg = NULL;
9581
9582 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9583 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9584 file, linenum, args[0], errmsg);
9585 free(errmsg);
9586 goto out_err;
9587 }
9588 rule->cond = cond;
9589 }
9590 else if (*args[cur_arg]) {
9591 Alert("parsing [%s:%d]: 'http-response %s' expects"
9592 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9593 file, linenum, args[0], args[cur_arg]);
9594 goto out_err;
9595 }
9596
9597 return rule;
9598 out_err:
9599 free(rule);
9600 return NULL;
9601}
9602
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9603/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9604 * 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]9605 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9606 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9607 */
9608struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9609 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9610{
9611 struct redirect_rule *rule;
9612 int cur_arg;
9613 int type = REDIRECT_TYPE_NONE;
9614 int code = 302;
9615 const char *destination = NULL;
9616 const char *cookie = NULL;
9617 int cookie_set = 0;
9618 unsigned int flags = REDIRECT_FLAG_NONE;
9619 struct acl_cond *cond = NULL;
9620
9621 cur_arg = 0;
9622 while (*(args[cur_arg])) {
9623 if (strcmp(args[cur_arg], "location") == 0) {
9624 if (!*args[cur_arg + 1])
9625 goto missing_arg;
9626
9627 type = REDIRECT_TYPE_LOCATION;
9628 cur_arg++;
9629 destination = args[cur_arg];
9630 }
9631 else if (strcmp(args[cur_arg], "prefix") == 0) {
9632 if (!*args[cur_arg + 1])
9633 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9634 type = REDIRECT_TYPE_PREFIX;
9635 cur_arg++;
9636 destination = args[cur_arg];
9637 }
9638 else if (strcmp(args[cur_arg], "scheme") == 0) {
9639 if (!*args[cur_arg + 1])
9640 goto missing_arg;
9641
9642 type = REDIRECT_TYPE_SCHEME;
9643 cur_arg++;
9644 destination = args[cur_arg];
9645 }
9646 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9647 if (!*args[cur_arg + 1])
9648 goto missing_arg;
9649
9650 cur_arg++;
9651 cookie = args[cur_arg];
9652 cookie_set = 1;
9653 }
9654 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9655 if (!*args[cur_arg + 1])
9656 goto missing_arg;
9657
9658 cur_arg++;
9659 cookie = args[cur_arg];
9660 cookie_set = 0;
9661 }
9662 else if (strcmp(args[cur_arg], "code") == 0) {
9663 if (!*args[cur_arg + 1])
9664 goto missing_arg;
9665
9666 cur_arg++;
9667 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9668 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9669 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9670 "'%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]9671 args[cur_arg - 1], args[cur_arg]);
9672 return NULL;
9673 }
9674 }
9675 else if (!strcmp(args[cur_arg],"drop-query")) {
9676 flags |= REDIRECT_FLAG_DROP_QS;
9677 }
9678 else if (!strcmp(args[cur_arg],"append-slash")) {
9679 flags |= REDIRECT_FLAG_APPEND_SLASH;
9680 }
9681 else if (strcmp(args[cur_arg], "if") == 0 ||
9682 strcmp(args[cur_arg], "unless") == 0) {
9683 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9684 if (!cond) {
9685 memprintf(errmsg, "error in condition: %s", *errmsg);
9686 return NULL;
9687 }
9688 break;
9689 }
9690 else {
9691 memprintf(errmsg,
9692 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9693 args[cur_arg]);
9694 return NULL;
9695 }
9696 cur_arg++;
9697 }
9698
9699 if (type == REDIRECT_TYPE_NONE) {
9700 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9701 return NULL;
9702 }
9703
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9704 if (dir && type != REDIRECT_TYPE_LOCATION) {
9705 memprintf(errmsg, "response only supports redirect type 'location'");
9706 return NULL;
9707 }
9708
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9709 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
9710 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9711 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9712
9713 if (!use_fmt) {
9714 /* old-style static redirect rule */
9715 rule->rdr_str = strdup(destination);
9716 rule->rdr_len = strlen(destination);
9717 }
9718 else {
9719 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9720
9721 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9722 * if prefix == "/", we don't want to add anything, otherwise it
9723 * makes it hard for the user to configure a self-redirection.
9724 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]9725 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9726 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9727 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9728 dir ? (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRS_HDR : SMP_VAL_BE_HRS_HDR
9729 : (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]9730 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9731 free(curproxy->conf.lfs_file);
9732 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9733 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9734 }
9735 }
9736
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9737 if (cookie) {
9738 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9739 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9740 */
9741 rule->cookie_len = strlen(cookie);
9742 if (cookie_set) {
9743 rule->cookie_str = malloc(rule->cookie_len + 10);
9744 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9745 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9746 rule->cookie_len += 9;
9747 } else {
9748 rule->cookie_str = malloc(rule->cookie_len + 21);
9749 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9750 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9751 rule->cookie_len += 20;
9752 }
9753 }
9754 rule->type = type;
9755 rule->code = code;
9756 rule->flags = flags;
9757 LIST_INIT(&rule->list);
9758 return rule;
9759
9760 missing_arg:
9761 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9762 return NULL;
9763}
9764
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9765/************************************************************************/
9766/* The code below is dedicated to ACL parsing and matching */
9767/************************************************************************/
9768
9769
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9770/* This function ensures that the prerequisites for an L7 fetch are ready,
9771 * which means that a request or response is ready. If some data is missing,
9772 * 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]9773 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9774 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9775 *
9776 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9777 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9778 * decide whether or not an HTTP message is present ;
9779 * 0 if the requested data cannot be fetched or if it is certain that
9780 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9781 * 1 if an HTTP message is ready
9782 */
James Rosewell91a41cb2015-09-18 17:11:16 +0100[diff] [blame]9783int smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9784 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9785{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9786 struct http_txn *txn;
9787 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9788
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame^]9789 /* Note: it is possible that <s> is NULL when called before stream
9790 * initialization (eg: tcp-request connection), so this function is the
9791 * one responsible for guarding against this case for all HTTP users.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9792 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9793 if (!s)
9794 return 0;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame^]9795
Thierry FOURNIERed08d6a2015-09-24 08:40:18 +0200[diff] [blame]9796 if (!s->txn) {
9797 if (unlikely(!http_alloc_txn(s)))
9798 return 0; /* not enough memory */
9799 http_init_txn(s);
9800 }
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9801 txn = s->txn;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9802 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9803
9804 /* Check for a dependency on a request */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9805 smp->data.type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9806
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9807 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9808 /* If the buffer does not leave enough free space at the end,
9809 * we must first realign it.
9810 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9811 if (s->req.buf->p > s->req.buf->data &&
9812 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
9813 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9814
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9815 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9816 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9817 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9818
9819 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9820 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9821 http_msg_analyzer(msg, &txn->hdr_idx);
9822
9823 /* Still no valid request ? */
9824 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9825 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9826 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9827 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9828 }
9829 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9830 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9831 return 0;
9832 }
9833
9834 /* OK we just got a valid HTTP request. We have some minor
9835 * preparation to perform so that further checks can rely
9836 * on HTTP tests.
9837 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9838
9839 /* If the request was parsed but was too large, we must absolutely
9840 * return an error so that it is not processed. At the moment this
9841 * cannot happen, but if the parsers are to change in the future,
9842 * we want this check to be maintained.
9843 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9844 if (unlikely(s->req.buf->i + s->req.buf->p >
9845 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9846 msg->msg_state = HTTP_MSG_ERROR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9847 smp->data.u.sint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9848 return 1;
9849 }
9850
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9851 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9852 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9853 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9854
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9855 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9856 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9857 }
9858
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9859 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9860 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9861 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9862
9863 /* otherwise everything's ready for the request */
9864 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9865 else {
9866 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9867 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9868 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9869 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9870 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9871 }
9872
9873 /* everything's OK */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9874 smp->data.u.sint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9875 return 1;
9876}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9877
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9878/* 1. Check on METHOD
9879 * We use the pre-parsed method if it is known, and store its number as an
9880 * integer. If it is unknown, we use the pointer and the length.
9881 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9882static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9883{
9884 int len, meth;
9885
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9886 len = strlen(text);
9887 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9888
9889 pattern->val.i = meth;
9890 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]9891 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9892 pattern->len = len;
9893 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9894 else {
9895 pattern->ptr.str = NULL;
9896 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9897 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9898 return 1;
9899}
9900
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9901/* This function fetches the method of current HTTP request and stores
9902 * it in the global pattern struct as a chunk. There are two possibilities :
9903 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9904 * in <len> and <ptr> is NULL ;
9905 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9906 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9907 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9908 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9909static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9910smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9911{
9912 int meth;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame^]9913 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9914
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9915 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9916
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame^]9917 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9918 meth = txn->meth;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9919 smp->data.type = SMP_T_METH;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9920 smp->data.u.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9921 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9922 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
9923 /* ensure the indexes are not affected */
9924 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9925 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9926 smp->data.u.meth.str.len = txn->req.sl.rq.m_l;
9927 smp->data.u.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9928 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9929 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9930 return 1;
9931}
9932
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9933/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9934static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9935{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9936 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9937 struct pattern_list *lst;
9938 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9939
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9940 list_for_each_entry(lst, &expr->patterns, list) {
9941 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9942
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9943 /* well-known method */
9944 if (pattern->val.i != HTTP_METH_OTHER) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9945 if (smp->data.u.meth.meth == pattern->val.i)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9946 return pattern;
9947 else
9948 continue;
9949 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9950
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9951 /* Other method, we must compare the strings */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9952 if (pattern->len != smp->data.u.meth.str.len)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9953 continue;
9954
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9955 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9956 if ((icase && strncasecmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0) ||
9957 (!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]9958 return pattern;
9959 }
9960 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9961}
9962
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9963static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9964smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9965{
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame^]9966 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9967 char *ptr;
9968 int len;
9969
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9970 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9971
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame^]9972 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9973 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9974 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9975
9976 while ((len-- > 0) && (*ptr++ != '/'));
9977 if (len <= 0)
9978 return 0;
9979
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9980 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9981 smp->data.u.str.str = ptr;
9982 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9983
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9984 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9985 return 1;
9986}
9987
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9988static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9989smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9990{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9991 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9992 char *ptr;
9993 int len;
9994
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9995 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9996
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]9997 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9998 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9999 return 0;
10000
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10001 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10002 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10003
10004 while ((len-- > 0) && (*ptr++ != '/'));
10005 if (len <= 0)
10006 return 0;
10007
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10008 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10009 smp->data.u.str.str = ptr;
10010 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10011
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10012 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10013 return 1;
10014}
10015
10016/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10017static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10018smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10019{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10020 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10021 char *ptr;
10022 int len;
10023
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10024 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10025
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10026 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10027 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10028 return 0;
10029
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10030 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10031 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10032
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10033 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10034 smp->data.u.sint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10035 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10036 return 1;
10037}
10038
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10039/* returns the longest available part of the body. This requires that the body
10040 * has been waited for using http-buffer-request.
10041 */
10042static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10043smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10044{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10045 struct http_msg *msg;
10046 unsigned long len;
10047 unsigned long block1;
10048 char *body;
10049 struct chunk *temp;
10050
10051 CHECK_HTTP_MESSAGE_FIRST();
10052
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10053 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame^]10054 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10055 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame^]10056 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10057
10058 len = http_body_bytes(msg);
10059 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10060
10061 block1 = len;
10062 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10063 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10064
10065 if (block1 == len) {
10066 /* buffer is not wrapped (or empty) */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10067 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10068 smp->data.u.str.str = body;
10069 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10070 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10071 }
10072 else {
10073 /* buffer is wrapped, we need to defragment it */
10074 temp = get_trash_chunk();
10075 memcpy(temp->str, body, block1);
10076 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10077 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10078 smp->data.u.str.str = temp->str;
10079 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10080 smp->flags = SMP_F_VOL_TEST;
10081 }
10082 return 1;
10083}
10084
10085
10086/* returns the available length of the body. This requires that the body
10087 * has been waited for using http-buffer-request.
10088 */
10089static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10090smp_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]10091{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10092 struct http_msg *msg;
10093
10094 CHECK_HTTP_MESSAGE_FIRST();
10095
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10096 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame^]10097 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10098 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame^]10099 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10100
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10101 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10102 smp->data.u.sint = http_body_bytes(msg);
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10103
10104 smp->flags = SMP_F_VOL_TEST;
10105 return 1;
10106}
10107
10108
10109/* returns the advertised length of the body, or the advertised size of the
10110 * chunks available in the buffer. This requires that the body has been waited
10111 * for using http-buffer-request.
10112 */
10113static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10114smp_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]10115{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10116 struct http_msg *msg;
10117
10118 CHECK_HTTP_MESSAGE_FIRST();
10119
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10120 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame^]10121 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10122 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame^]10123 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10124
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10125 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10126 smp->data.u.sint = msg->body_len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10127
10128 smp->flags = SMP_F_VOL_TEST;
10129 return 1;
10130}
10131
10132
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10133/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10134static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10135smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10136{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10137 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10138
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10139 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10140
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10141 txn = smp->strm->txn;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10142 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10143 smp->data.u.str.len = txn->req.sl.rq.u_l;
10144 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]10145 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10146 return 1;
10147}
10148
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10149static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10150smp_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]10151{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10152 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10153 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10154
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10155 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10156
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10157 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10158 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]10159 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10160 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10161
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10162 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10163 smp->data.u.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10164 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10165 return 1;
10166}
10167
10168static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10169smp_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]10170{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10171 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10172 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10173
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10174 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10175
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10176 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10177 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]10178 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10179 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10180
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10181 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10182 smp->data.u.sint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10183 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10184 return 1;
10185}
10186
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10187/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10188 * Accepts an optional argument of type string containing the header field name,
10189 * and an optional argument of type signed or unsigned integer to request an
10190 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10191 * headers are considered from the first one. It does not stop on commas and
10192 * returns full lines instead (useful for User-Agent or Date for example).
10193 */
10194static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10195smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10196{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10197 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10198 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10199 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10200 int occ = 0;
10201 const char *name_str = NULL;
10202 int name_len = 0;
10203
10204 if (!ctx) {
10205 /* first call */
10206 ctx = &static_hdr_ctx;
10207 ctx->idx = 0;
10208 smp->ctx.a[0] = ctx;
10209 }
10210
10211 if (args) {
10212 if (args[0].type != ARGT_STR)
10213 return 0;
10214 name_str = args[0].data.str.str;
10215 name_len = args[0].data.str.len;
10216
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10217 if (args[1].type == ARGT_SINT)
10218 occ = args[1].data.sint;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10219 }
10220
10221 CHECK_HTTP_MESSAGE_FIRST();
10222
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10223 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10224 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]10225
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10226 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10227 /* search for header from the beginning */
10228 ctx->idx = 0;
10229
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10230 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10231 /* no explicit occurrence and single fetch => last header by default */
10232 occ = -1;
10233
10234 if (!occ)
10235 /* prepare to report multiple occurrences for ACL fetches */
10236 smp->flags |= SMP_F_NOT_LAST;
10237
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10238 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10239 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10240 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]10241 return 1;
10242
10243 smp->flags &= ~SMP_F_NOT_LAST;
10244 return 0;
10245}
10246
10247/* 6. Check on HTTP header count. The number of occurrences is returned.
10248 * Accepts exactly 1 argument of type string. It does not stop on commas and
10249 * returns full lines instead (useful for User-Agent or Date for example).
10250 */
10251static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10252smp_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]10253{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10254 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10255 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10256 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10257 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10258 const char *name = NULL;
10259 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10260
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10261 if (args && args->type == ARGT_STR) {
10262 name = args->data.str.str;
10263 len = args->data.str.len;
10264 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10265
10266 CHECK_HTTP_MESSAGE_FIRST();
10267
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10268 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10269 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]10270
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10271 ctx.idx = 0;
10272 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10273 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10274 cnt++;
10275
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10276 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10277 smp->data.u.sint = cnt;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10278 smp->flags = SMP_F_VOL_HDR;
10279 return 1;
10280}
10281
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10282static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10283smp_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]10284{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10285 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10286 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10287 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10288 struct chunk *temp;
10289 char del = ',';
10290
10291 if (args && args->type == ARGT_STR)
10292 del = *args[0].data.str.str;
10293
10294 CHECK_HTTP_MESSAGE_FIRST();
10295
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10296 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10297 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]10298
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10299 temp = get_trash_chunk();
10300
10301 ctx.idx = 0;
10302 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10303 if (temp->len)
10304 temp->str[temp->len++] = del;
10305 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10306 temp->len += ctx.del;
10307 }
10308
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10309 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10310 smp->data.u.str.str = temp->str;
10311 smp->data.u.str.len = temp->len;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10312 smp->flags = SMP_F_VOL_HDR;
10313 return 1;
10314}
10315
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10316/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10317 * Accepts an optional argument of type string containing the header field name,
10318 * and an optional argument of type signed or unsigned integer to request an
10319 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10320 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10321 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10322static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10323smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10324{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10325 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10326 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10327 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10328 int occ = 0;
10329 const char *name_str = NULL;
10330 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10331
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10332 if (!ctx) {
10333 /* first call */
10334 ctx = &static_hdr_ctx;
10335 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10336 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10337 }
10338
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10339 if (args) {
10340 if (args[0].type != ARGT_STR)
10341 return 0;
10342 name_str = args[0].data.str.str;
10343 name_len = args[0].data.str.len;
10344
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10345 if (args[1].type == ARGT_SINT)
10346 occ = args[1].data.sint;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10347 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10348
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10349 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10350
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10351 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10352 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]10353
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10354 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10355 /* search for header from the beginning */
10356 ctx->idx = 0;
10357
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10358 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10359 /* no explicit occurrence and single fetch => last header by default */
10360 occ = -1;
10361
10362 if (!occ)
10363 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10364 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10365
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10366 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10367 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10368 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]10369 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10370
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10371 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10372 return 0;
10373}
10374
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10375/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10376 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10377 */
10378static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10379smp_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]10380{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10381 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10382 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10383 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10384 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10385 const char *name = NULL;
10386 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10387
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10388 if (args && args->type == ARGT_STR) {
10389 name = args->data.str.str;
10390 len = args->data.str.len;
10391 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10392
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10393 CHECK_HTTP_MESSAGE_FIRST();
10394
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10395 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10396 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]10397
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10398 ctx.idx = 0;
10399 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10400 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10401 cnt++;
10402
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10403 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10404 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10405 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10406 return 1;
10407}
10408
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10409/* Fetch an HTTP header's integer value. The integer value is returned. It
10410 * takes a mandatory argument of type string and an optional one of type int
10411 * to designate a specific occurrence. It returns an unsigned integer, which
10412 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10413 */
10414static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10415smp_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]10416{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10417 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10418
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10419 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10420 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10421 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]10422 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10423
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10424 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10425}
10426
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10427/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10428 * and an optional one of type int to designate a specific occurrence.
10429 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10430 */
10431static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10432smp_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]10433{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10434 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10435
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10436 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10437 if (url2ipv4((char *)smp->data.u.str.str, &smp->data.u.ipv4)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10438 smp->data.type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10439 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10440 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10441 struct chunk *temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10442 if (smp->data.u.str.len < temp->size - 1) {
10443 memcpy(temp->str, smp->data.u.str.str, smp->data.u.str.len);
10444 temp->str[smp->data.u.str.len] = '\0';
10445 if (inet_pton(AF_INET6, temp->str, &smp->data.u.ipv6)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10446 smp->data.type = SMP_T_IPV6;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10447 break;
10448 }
10449 }
10450 }
10451
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10452 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10453 if (!(smp->flags & SMP_F_NOT_LAST))
10454 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10455 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10456 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10457}
10458
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10459/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10460 * the first '/' after the possible hostname, and ends before the possible '?'.
10461 */
10462static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10463smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10464{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10465 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10466 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10467
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10468 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10469
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10470 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10471 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]10472 ptr = http_get_path(txn);
10473 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10474 return 0;
10475
10476 /* OK, we got the '/' ! */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10477 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10478 smp->data.u.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10479
10480 while (ptr < end && *ptr != '?')
10481 ptr++;
10482
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10483 smp->data.u.str.len = ptr - smp->data.u.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10484 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10485 return 1;
10486}
10487
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10488/* This produces a concatenation of the first occurrence of the Host header
10489 * followed by the path component if it begins with a slash ('/'). This means
10490 * that '*' will not be added, resulting in exactly the first Host entry.
10491 * If no Host header is found, then the path is returned as-is. The returned
10492 * 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]10493 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10494 */
10495static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10496smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10497{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10498 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10499 char *ptr, *end, *beg;
10500 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10501 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10502
10503 CHECK_HTTP_MESSAGE_FIRST();
10504
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10505 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10506 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10507 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]10508 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10509
10510 /* 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]10511 temp = get_trash_chunk();
10512 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10513 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10514 smp->data.u.str.str = temp->str;
10515 smp->data.u.str.len = ctx.vlen;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10516
10517 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10518 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]10519 beg = http_get_path(txn);
10520 if (!beg)
10521 beg = end;
10522
10523 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10524
10525 if (beg < ptr && *beg == '/') {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10526 memcpy(smp->data.u.str.str + smp->data.u.str.len, beg, ptr - beg);
10527 smp->data.u.str.len += ptr - beg;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10528 }
10529
10530 smp->flags = SMP_F_VOL_1ST;
10531 return 1;
10532}
10533
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10534/* This produces a 32-bit hash of the concatenation of the first occurrence of
10535 * the Host header followed by the path component if it begins with a slash ('/').
10536 * This means that '*' will not be added, resulting in exactly the first Host
10537 * 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]10538 * is hashed using the path hash followed by a full avalanche hash and provides a
10539 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10540 * high-traffic sites without having to store whole paths.
10541 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10542int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10543smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10544{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10545 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10546 struct hdr_ctx ctx;
10547 unsigned int hash = 0;
10548 char *ptr, *beg, *end;
10549 int len;
10550
10551 CHECK_HTTP_MESSAGE_FIRST();
10552
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10553 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10554 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10555 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]10556 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10557 ptr = ctx.line + ctx.val;
10558 len = ctx.vlen;
10559 while (len--)
10560 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10561 }
10562
10563 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10564 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]10565 beg = http_get_path(txn);
10566 if (!beg)
10567 beg = end;
10568
10569 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10570
10571 if (beg < ptr && *beg == '/') {
10572 while (beg < ptr)
10573 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10574 }
10575 hash = full_hash(hash);
10576
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10577 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10578 smp->data.u.sint = hash;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10579 smp->flags = SMP_F_VOL_1ST;
10580 return 1;
10581}
10582
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10583/* 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]10584 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10585 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10586 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10587 * that in environments where IPv6 is insignificant, truncating the output to
10588 * 8 bytes would still work.
10589 */
10590static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10591smp_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]10592{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10593 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10594 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10595
10596 if (!cli_conn)
10597 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10598
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10599 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10600 return 0;
10601
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10602 temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10603 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10604 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10605
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10606 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10607 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10608 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]10609 temp->len += 4;
10610 break;
10611 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10612 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]10613 temp->len += 16;
10614 break;
10615 default:
10616 return 0;
10617 }
10618
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10619 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10620 smp->data.type = SMP_T_BIN;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10621 return 1;
10622}
10623
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10624/* Extracts the query string, which comes after the question mark '?'. If no
10625 * question mark is found, nothing is returned. Otherwise it returns a sample
10626 * of type string carrying the whole query string.
10627 */
10628static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10629smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10630{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10631 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10632 char *ptr, *end;
10633
10634 CHECK_HTTP_MESSAGE_FIRST();
10635
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10636 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10637 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
10638 end = ptr + txn->req.sl.rq.u_l;
10639
10640 /* look up the '?' */
10641 do {
10642 if (ptr == end)
10643 return 0;
10644 } while (*ptr++ != '?');
10645
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10646 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10647 smp->data.u.str.str = ptr;
10648 smp->data.u.str.len = end - ptr;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10649 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
10650 return 1;
10651}
10652
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10653static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10654smp_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]10655{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10656 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10657 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10658 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10659
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10660 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10661
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10662 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10663 smp->data.u.sint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10664 return 1;
10665}
10666
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10667/* return a valid test if the current request is the first one on the connection */
10668static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10669smp_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]10670{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10671 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10672 smp->data.u.sint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10673 return 1;
10674}
10675
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10676/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10677static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10678smp_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]10679{
10680
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10681 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10682 return 0;
10683
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10684 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10685
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10686 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10687 return 0;
10688
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10689 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10690 smp->data.u.sint = check_user(args->data.usr, smp->strm->txn->auth.user,
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10691 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10692 return 1;
10693}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10694
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10695/* Accepts exactly 1 argument of type userlist */
10696static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10697smp_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]10698{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10699 if (!args || args->type != ARGT_USR)
10700 return 0;
10701
10702 CHECK_HTTP_MESSAGE_FIRST();
10703
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10704 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10705 return 0;
10706
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10707 /* if the user does not belong to the userlist or has a wrong password,
10708 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10709 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10710 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10711 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
10712 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10713 return 0;
10714
10715 /* pat_match_auth() will need the user list */
10716 smp->ctx.a[0] = args->data.usr;
10717
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10718 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10719 smp->flags = SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10720 smp->data.u.str.str = smp->strm->txn->auth.user;
10721 smp->data.u.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10722
10723 return 1;
10724}
10725
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10726/* Try to find the next occurrence of a cookie name in a cookie header value.
10727 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10728 * the cookie value is returned into *value and *value_l, and the function
10729 * returns a pointer to the next pointer to search from if the value was found.
10730 * Otherwise if the cookie was not found, NULL is returned and neither value
10731 * nor value_l are touched. The input <hdr> string should first point to the
10732 * header's value, and the <hdr_end> pointer must point to the first character
10733 * not part of the value. <list> must be non-zero if value may represent a list
10734 * of values (cookie headers). This makes it faster to abort parsing when no
10735 * list is expected.
10736 */
David Carlier4686f792015-09-25 14:10:50 +0100[diff] [blame]10737char *
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10738extract_cookie_value(char *hdr, const char *hdr_end,
10739 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10740 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10741{
10742 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10743 char *next;
10744
10745 /* we search at least a cookie name followed by an equal, and more
10746 * generally something like this :
10747 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10748 */
10749 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10750 /* Iterate through all cookies on this line */
10751
10752 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10753 att_beg++;
10754
10755 /* find att_end : this is the first character after the last non
10756 * space before the equal. It may be equal to hdr_end.
10757 */
10758 equal = att_end = att_beg;
10759
10760 while (equal < hdr_end) {
10761 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10762 break;
10763 if (http_is_spht[(unsigned char)*equal++])
10764 continue;
10765 att_end = equal;
10766 }
10767
10768 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10769 * is between <att_beg> and <equal>, both may be identical.
10770 */
10771
10772 /* look for end of cookie if there is an equal sign */
10773 if (equal < hdr_end && *equal == '=') {
10774 /* look for the beginning of the value */
10775 val_beg = equal + 1;
10776 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10777 val_beg++;
10778
10779 /* find the end of the value, respecting quotes */
10780 next = find_cookie_value_end(val_beg, hdr_end);
10781
10782 /* make val_end point to the first white space or delimitor after the value */
10783 val_end = next;
10784 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
10785 val_end--;
10786 } else {
10787 val_beg = val_end = next = equal;
10788 }
10789
10790 /* We have nothing to do with attributes beginning with '$'. However,
10791 * they will automatically be removed if a header before them is removed,
10792 * since they're supposed to be linked together.
10793 */
10794 if (*att_beg == '$')
10795 continue;
10796
10797 /* Ignore cookies with no equal sign */
10798 if (equal == next)
10799 continue;
10800
10801 /* Now we have the cookie name between att_beg and att_end, and
10802 * its value between val_beg and val_end.
10803 */
10804
10805 if (att_end - att_beg == cookie_name_l &&
10806 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10807 /* let's return this value and indicate where to go on from */
10808 *value = val_beg;
10809 *value_l = val_end - val_beg;
10810 return next + 1;
10811 }
10812
10813 /* Set-Cookie headers only have the name in the first attr=value part */
10814 if (!list)
10815 break;
10816 }
10817
10818 return NULL;
10819}
10820
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10821/* Fetch a captured HTTP request header. The index is the position of
10822 * the "capture" option in the configuration file
10823 */
10824static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10825smp_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]10826{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10827 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10828 int idx;
10829
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10830 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10831 return 0;
10832
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10833 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10834
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10835 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]10836 return 0;
10837
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10838 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10839 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10840 smp->data.u.str.str = smp->strm->req_cap[idx];
10841 smp->data.u.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10842
10843 return 1;
10844}
10845
10846/* Fetch a captured HTTP response header. The index is the position of
10847 * the "capture" option in the configuration file
10848 */
10849static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10850smp_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]10851{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10852 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10853 int idx;
10854
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10855 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10856 return 0;
10857
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10858 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10859
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10860 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]10861 return 0;
10862
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10863 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10864 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10865 smp->data.u.str.str = smp->strm->res_cap[idx];
10866 smp->data.u.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10867
10868 return 1;
10869}
10870
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10871/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
10872static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10873smp_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]10874{
10875 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10876 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10877 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10878
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10879 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10880 return 0;
10881
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10882 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10883
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10884 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10885 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10886
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10887 temp = get_trash_chunk();
10888 temp->str = txn->uri;
10889 temp->len = ptr - txn->uri;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10890 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10891 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10892 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10893
10894 return 1;
10895
10896}
10897
10898/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
10899static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10900smp_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]10901{
10902 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10903 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10904 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10905
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10906 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10907 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10908
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10909 ptr = txn->uri;
10910
10911 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10912 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10913
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10914 if (!*ptr)
10915 return 0;
10916
10917 ptr++; /* skip the space */
10918
10919 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10920 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10921 if (!ptr)
10922 return 0;
10923 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
10924 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10925
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10926 smp->data.u.str = *temp;
10927 smp->data.u.str.len = ptr - temp->str;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10928 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10929 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10930
10931 return 1;
10932}
10933
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10934/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
10935 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10936 */
10937static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10938smp_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]10939{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10940 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10941
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10942 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10943 return 0;
10944
10945 if (txn->req.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10946 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10947 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10948 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10949
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10950 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10951 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10952 smp->flags = SMP_F_CONST;
10953 return 1;
10954
10955}
10956
10957/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
10958 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10959 */
10960static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10961smp_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]10962{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10963 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10964
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10965 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10966 return 0;
10967
10968 if (txn->rsp.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10969 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10970 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10971 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10972
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10973 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10974 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10975 smp->flags = SMP_F_CONST;
10976 return 1;
10977
10978}
10979
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10980
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10981/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10982 * 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]10983 * 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]10984 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10985 * 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]10986 * Accepts exactly 1 argument of type string. If the input options indicate
10987 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10988 * The returned sample is of type CSTR. Can be used to parse cookies in other
10989 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10990 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10991int 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]10992{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10993 struct http_txn *txn;
10994 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10995 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10996 const struct http_msg *msg;
10997 const char *hdr_name;
10998 int hdr_name_len;
10999 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11000 int occ = 0;
11001 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11002
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11003 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11004 return 0;
11005
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11006 if (!ctx) {
11007 /* first call */
11008 ctx = &static_hdr_ctx;
11009 ctx->idx = 0;
11010 smp->ctx.a[2] = ctx;
11011 }
11012
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11013 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11014
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11015 txn = smp->strm->txn;
11016 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11017
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11018 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11019 msg = &txn->req;
11020 hdr_name = "Cookie";
11021 hdr_name_len = 6;
11022 } else {
11023 msg = &txn->rsp;
11024 hdr_name = "Set-Cookie";
11025 hdr_name_len = 10;
11026 }
11027
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11028 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11029 /* no explicit occurrence and single fetch => last cookie by default */
11030 occ = -1;
11031
11032 /* OK so basically here, either we want only one value and it's the
11033 * last one, or we want to iterate over all of them and we fetch the
11034 * next one.
11035 */
11036
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11037 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11038 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11039 /* search for the header from the beginning, we must first initialize
11040 * the search parameters.
11041 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11042 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11043 ctx->idx = 0;
11044 }
11045
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11046 smp->flags |= SMP_F_VOL_HDR;
11047
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11048 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11049 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11050 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11051 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11052 goto out;
11053
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11054 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11055 continue;
11056
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11057 smp->ctx.a[0] = ctx->line + ctx->val;
11058 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11059 }
11060
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11061 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11062 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11063 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]11064 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11065 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11066 &smp->data.u.str.str,
11067 &smp->data.u.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11068 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11069 found = 1;
11070 if (occ >= 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11071 /* one value was returned into smp->data.u.str.{str,len} */
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11072 smp->flags |= SMP_F_NOT_LAST;
11073 return 1;
11074 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11075 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11076 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11077 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11078 /* all cookie headers and values were scanned. If we're looking for the
11079 * last occurrence, we may return it now.
11080 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11081 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11082 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11083 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11084}
11085
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11086/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11087 * 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]11088 * multiple cookies may be parsed on the same line. The returned sample is of
11089 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11090 */
11091static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11092smp_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]11093{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11094 struct http_txn *txn;
11095 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11096 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11097 const struct http_msg *msg;
11098 const char *hdr_name;
11099 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11100 int cnt;
11101 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11102 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11103
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11104 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11105 return 0;
11106
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11107 CHECK_HTTP_MESSAGE_FIRST();
11108
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11109 txn = smp->strm->txn;
11110 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11111
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11112 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11113 msg = &txn->req;
11114 hdr_name = "Cookie";
11115 hdr_name_len = 6;
11116 } else {
11117 msg = &txn->rsp;
11118 hdr_name = "Set-Cookie";
11119 hdr_name_len = 10;
11120 }
11121
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11122 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11123 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11124 ctx.idx = 0;
11125 cnt = 0;
11126
11127 while (1) {
11128 /* Note: val_beg == NULL every time we need to fetch a new header */
11129 if (!val_beg) {
11130 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11131 break;
11132
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11133 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11134 continue;
11135
11136 val_beg = ctx.line + ctx.val;
11137 val_end = val_beg + ctx.vlen;
11138 }
11139
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11140 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11141 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11142 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11143 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11144 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11145 &smp->data.u.str.str,
11146 &smp->data.u.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11147 cnt++;
11148 }
11149 }
11150
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11151 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11152 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11153 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11154 return 1;
11155}
11156
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11157/* Fetch an cookie's integer value. The integer value is returned. It
11158 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11159 */
11160static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11161smp_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]11162{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11163 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11164
11165 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11166 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11167 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]11168 }
11169
11170 return ret;
11171}
11172
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11173/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11174/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11175/************************************************************************/
11176
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11177/*
11178 * Given a path string and its length, find the position of beginning of the
11179 * query string. Returns NULL if no query string is found in the path.
11180 *
11181 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11182 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11183 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11184 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11185static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11186{
11187 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11188
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11189 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11190 return p ? p + 1 : NULL;
11191}
11192
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11193static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11194{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11195 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11196}
11197
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11198/* after increasing a pointer value, it can exceed the first buffer
11199 * size. This function transform the value of <ptr> according with
11200 * the expected position. <chunks> is an array of the one or two
11201 * avalaible chunks. The first value is the start of the first chunk,
11202 * the second value if the end+1 of the first chunks. The third value
11203 * is NULL or the start of the second chunk and the fourth value is
11204 * the end+1 of the second chunk. The function returns 1 if does a
11205 * wrap, else returns 0.
11206 */
11207static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11208{
11209 if (*ptr < chunks[1])
11210 return 0;
11211 if (!chunks[2])
11212 return 0;
11213 *ptr = chunks[2] + ( *ptr - chunks[1] );
11214 return 1;
11215}
11216
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11217/*
11218 * Given a url parameter, find the starting position of the first occurence,
11219 * or NULL if the parameter is not found.
11220 *
11221 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11222 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11223 *
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11224 * Warning: this function returns a pointer that can point to the first chunk
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11225 * or the second chunk. The caller must be check the position before using the
11226 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11227 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11228static const char *
11229find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11230 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11231 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11232{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11233 const char *pos, *last, *equal;
11234 const char **bufs = chunks;
11235 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11236
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11237
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11238 pos = bufs[0];
11239 last = bufs[1];
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11240 while (pos < last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11241 /* Check the equal. */
11242 equal = pos + url_param_name_l;
11243 if (fix_pointer_if_wrap(chunks, &equal)) {
11244 if (equal >= chunks[3])
11245 return NULL;
11246 } else {
11247 if (equal >= chunks[1])
11248 return NULL;
11249 }
11250 if (*equal == '=') {
11251 if (pos + url_param_name_l > last) {
11252 /* process wrap case, we detect a wrap. In this case, the
11253 * comparison is performed in two parts.
11254 */
11255
11256 /* This is the end, we dont have any other chunk. */
11257 if (bufs != chunks || !bufs[2])
11258 return NULL;
11259
11260 /* Compute the length of each part of the comparison. */
11261 l1 = last - pos;
11262 l2 = url_param_name_l - l1;
11263
11264 /* The second buffer is too short to contain the compared string. */
11265 if (bufs[2] + l2 > bufs[3])
11266 return NULL;
11267
11268 if (memcmp(pos, url_param_name, l1) == 0 &&
11269 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11270 return pos;
11271
11272 /* Perform wrapping and jump the string who fail the comparison. */
11273 bufs += 2;
11274 pos = bufs[0] + l2;
11275 last = bufs[1];
11276
11277 } else {
11278 /* process a simple comparison. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11279 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11280 return pos;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11281 pos += url_param_name_l + 1;
11282 if (fix_pointer_if_wrap(chunks, &pos))
11283 last = bufs[2];
11284 }
11285 }
11286
11287 while (1) {
11288 /* Look for the next delimiter. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11289 while (pos < last && !is_param_delimiter(*pos, delim))
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11290 pos++;
11291 if (pos < last)
11292 break;
11293 /* process buffer wrapping. */
11294 if (bufs != chunks || !bufs[2])
11295 return NULL;
11296 bufs += 2;
11297 pos = bufs[0];
11298 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11299 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11300 pos++;
11301 }
11302 return NULL;
11303}
11304
11305/*
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11306 * Given a url parameter name and a query string, find the next value.
11307 * An empty url_param_name matches the first available parameter.
11308 * If the parameter is found, 1 is returned and *vstart / *vend are updated to
11309 * respectively provide a pointer to the value and its end.
11310 * Otherwise, 0 is returned and vstart/vend are not modified.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11311 */
11312static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11313find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11314 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11315 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11316{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11317 const char *arg_start, *qs_end;
11318 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11319
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11320 arg_start = chunks[0];
11321 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11322 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11323 /* Looks for an argument name. */
11324 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11325 url_param_name, url_param_name_l,
11326 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11327 /* Check for wrapping. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11328 if (arg_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11329 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11330 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11331 if (!arg_start)
11332 return 0;
11333
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11334 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11335 while (1) {
11336 /* looks for the first argument. */
11337 value_start = memchr(arg_start, '=', qs_end - arg_start);
11338 if (!value_start) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11339 /* Check for wrapping. */
11340 if (arg_start >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11341 arg_start < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11342 chunks[2]) {
11343 arg_start = chunks[2];
11344 qs_end = chunks[3];
11345 continue;
11346 }
11347 return 0;
11348 }
11349 break;
11350 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11351 value_start++;
11352 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11353 else {
11354 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11355 value_start = arg_start + url_param_name_l + 1;
11356
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11357 /* Check for pointer wrapping. */
11358 if (fix_pointer_if_wrap(chunks, &value_start)) {
11359 /* Update the end pointer. */
11360 qs_end = chunks[3];
11361
11362 /* Check for overflow. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11363 if (value_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11364 return 0;
11365 }
11366 }
11367
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11368 value_end = value_start;
11369
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11370 while (1) {
11371 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11372 value_end++;
11373 if (value_end < qs_end)
11374 break;
11375 /* process buffer wrapping. */
11376 if (value_end >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11377 value_end < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11378 chunks[2]) {
11379 value_end = chunks[2];
11380 qs_end = chunks[3];
11381 continue;
11382 }
11383 break;
11384 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11385
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11386 *vstart = value_start;
11387 *vend = value_end;
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11388 return 1;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11389}
11390
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11391/* This scans a URL-encoded query string. It takes an optionally wrapping
11392 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11393 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11394 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11395 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11396static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11397smp_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]11398{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11399 const char *vstart, *vend;
11400 struct chunk *temp;
11401 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11402
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11403 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11404 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11405 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11406 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11407 return 0;
11408
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11409 /* Create sample. If the value is contiguous, return the pointer as CONST,
11410 * if the value is wrapped, copy-it in a buffer.
11411 */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11412 smp->data.type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11413 if (chunks[2] &&
11414 vstart >= chunks[0] && vstart <= chunks[1] &&
11415 vend >= chunks[2] && vend <= chunks[3]) {
11416 /* Wrapped case. */
11417 temp = get_trash_chunk();
11418 memcpy(temp->str, vstart, chunks[1] - vstart);
11419 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11420 smp->data.u.str.str = temp->str;
11421 smp->data.u.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11422 } else {
11423 /* Contiguous case. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11424 smp->data.u.str.str = (char *)vstart;
11425 smp->data.u.str.len = vend - vstart;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11426 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11427 }
11428
11429 /* Update context, check wrapping. */
11430 chunks[0] = vend;
11431 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11432 chunks[1] = chunks[3];
11433 chunks[2] = NULL;
11434 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11435
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11436 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11437 smp->flags |= SMP_F_NOT_LAST;
11438
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11439 return 1;
11440}
11441
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11442/* This function iterates over each parameter of the query string. It uses
11443 * 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]11444 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11445 * An optional parameter name is passed in args[0], otherwise any parameter is
11446 * considered. It supports an optional delimiter argument for the beginning of
11447 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11448 */
11449static int
11450smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11451{
11452 struct http_msg *msg;
11453 char delim = '?';
11454 const char *name;
11455 int name_len;
11456
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11457 if (!args ||
11458 (args[0].type && args[0].type != ARGT_STR) ||
11459 (args[1].type && args[1].type != ARGT_STR))
11460 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11461
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11462 name = "";
11463 name_len = 0;
11464 if (args->type == ARGT_STR) {
11465 name = args->data.str.str;
11466 name_len = args->data.str.len;
11467 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11468
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11469 if (args[1].type)
11470 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11471
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11472 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11473 CHECK_HTTP_MESSAGE_FIRST();
11474
11475 msg = &smp->strm->txn->req;
11476
11477 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11478 msg->sl.rq.u_l, delim);
11479 if (!smp->ctx.a[0])
11480 return 0;
11481
11482 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]11483
11484 /* Assume that the context is filled with NULL pointer
11485 * before the first call.
11486 * smp->ctx.a[2] = NULL;
11487 * smp->ctx.a[3] = NULL;
11488 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11489 }
11490
11491 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11492}
11493
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11494/* This function iterates over each parameter of the body. This requires
11495 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11496 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11497 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11498 * optional second part if the body wraps at the end of the buffer. An optional
11499 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11500 */
11501static int
11502smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11503{
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11504 struct http_msg *msg;
11505 unsigned long len;
11506 unsigned long block1;
11507 char *body;
11508 const char *name;
11509 int name_len;
11510
11511 if (!args || (args[0].type && args[0].type != ARGT_STR))
11512 return 0;
11513
11514 name = "";
11515 name_len = 0;
11516 if (args[0].type == ARGT_STR) {
11517 name = args[0].data.str.str;
11518 name_len = args[0].data.str.len;
11519 }
11520
11521 if (!smp->ctx.a[0]) { // first call, find the query string
11522 CHECK_HTTP_MESSAGE_FIRST();
11523
11524 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame^]11525 msg = &smp->strm->txn->req;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11526 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame^]11527 msg = &smp->strm->txn->rsp;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11528
11529 len = http_body_bytes(msg);
11530 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11531
11532 block1 = len;
11533 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11534 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11535
11536 if (block1 == len) {
11537 /* buffer is not wrapped (or empty) */
11538 smp->ctx.a[0] = body;
11539 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11540
11541 /* Assume that the context is filled with NULL pointer
11542 * before the first call.
11543 * smp->ctx.a[2] = NULL;
11544 * smp->ctx.a[3] = NULL;
11545 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11546 }
11547 else {
11548 /* buffer is wrapped, we need to defragment it */
11549 smp->ctx.a[0] = body;
11550 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11551 smp->ctx.a[2] = msg->chn->buf->data;
11552 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11553 }
11554 }
11555 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11556}
11557
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11558/* Return the signed integer value for the specified url parameter (see url_param
11559 * above).
11560 */
11561static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11562smp_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]11563{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11564 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11565
11566 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11567 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11568 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]11569 }
11570
11571 return ret;
11572}
11573
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11574/* This produces a 32-bit hash of the concatenation of the first occurrence of
11575 * the Host header followed by the path component if it begins with a slash ('/').
11576 * This means that '*' will not be added, resulting in exactly the first Host
11577 * entry. If no Host header is found, then the path is used. The resulting value
11578 * is hashed using the url hash followed by a full avalanche hash and provides a
11579 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11580 * high-traffic sites without having to store whole paths.
11581 * this differs from the base32 functions in that it includes the url parameters
11582 * as well as the path
11583 */
11584static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11585smp_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]11586{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11587 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11588 struct hdr_ctx ctx;
11589 unsigned int hash = 0;
11590 char *ptr, *beg, *end;
11591 int len;
11592
11593 CHECK_HTTP_MESSAGE_FIRST();
11594
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11595 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11596 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11597 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]11598 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11599 ptr = ctx.line + ctx.val;
11600 len = ctx.vlen;
11601 while (len--)
11602 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11603 }
11604
11605 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11606 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]11607 beg = http_get_path(txn);
11608 if (!beg)
11609 beg = end;
11610
11611 for (ptr = beg; ptr < end ; ptr++);
11612
11613 if (beg < ptr && *beg == '/') {
11614 while (beg < ptr)
11615 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11616 }
11617 hash = full_hash(hash);
11618
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11619 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11620 smp->data.u.sint = hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11621 smp->flags = SMP_F_VOL_1ST;
11622 return 1;
11623}
11624
11625/* This concatenates the source address with the 32-bit hash of the Host and
11626 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11627 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11628 * on the source address length. The URL hash is stored before the address so
11629 * that in environments where IPv6 is insignificant, truncating the output to
11630 * 8 bytes would still work.
11631 */
11632static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11633smp_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]11634{
11635 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11636 struct connection *cli_conn = objt_conn(smp->sess->origin);
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11637 unsigned int hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11638
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11639 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11640 return 0;
11641
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11642 /* The returned hash is a 32 bytes integer. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11643 hash = smp->data.u.sint;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11644
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11645 temp = get_trash_chunk();
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11646 memcpy(temp->str + temp->len, &hash, sizeof(hash));
11647 temp->len += sizeof(hash);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11648
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11649 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11650 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11651 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]11652 temp->len += 4;
11653 break;
11654 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11655 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]11656 temp->len += 16;
11657 break;
11658 default:
11659 return 0;
11660 }
11661
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11662 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11663 smp->data.type = SMP_T_BIN;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11664 return 1;
11665}
11666
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11667/* This function is used to validate the arguments passed to any "hdr" fetch
11668 * keyword. These keywords support an optional positive or negative occurrence
11669 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11670 * is assumed that the types are already the correct ones. Returns 0 on error,
11671 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11672 * error message in case of error, that the caller is responsible for freeing.
11673 * The initial location must either be freeable or NULL.
11674 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]11675int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11676{
11677 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11678 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11679 return 0;
11680 }
11681 return 1;
11682}
11683
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11684/* takes an UINT value on input supposed to represent the time since EPOCH,
11685 * adds an optional offset found in args[0] and emits a string representing
11686 * the date in RFC-1123/5322 format.
11687 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11688static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11689{
Cyril Bontéf78d8962016-01-22 19:40:28 +0100[diff] [blame]11690 const char day[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11691 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11692 struct chunk *temp;
11693 struct tm *tm;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11694 /* 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]11695 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11696
11697 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11698 if (args && (args[0].type == ARGT_SINT))
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11699 curr_date += args[0].data.sint;
11700
11701 tm = gmtime(&curr_date);
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +0200[diff] [blame]11702 if (!tm)
11703 return 0;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11704
11705 temp = get_trash_chunk();
11706 temp->len = snprintf(temp->str, temp->size - temp->len,
11707 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11708 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11709 tm->tm_hour, tm->tm_min, tm->tm_sec);
11710
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11711 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11712 smp->data.type = SMP_T_STR;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11713 return 1;
11714}
11715
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11716/* Match language range with language tag. RFC2616 14.4:
11717 *
11718 * A language-range matches a language-tag if it exactly equals
11719 * the tag, or if it exactly equals a prefix of the tag such
11720 * that the first tag character following the prefix is "-".
11721 *
11722 * Return 1 if the strings match, else return 0.
11723 */
11724static inline int language_range_match(const char *range, int range_len,
11725 const char *tag, int tag_len)
11726{
11727 const char *end = range + range_len;
11728 const char *tend = tag + tag_len;
11729 while (range < end) {
11730 if (*range == '-' && tag == tend)
11731 return 1;
11732 if (*range != *tag || tag == tend)
11733 return 0;
11734 range++;
11735 tag++;
11736 }
11737 /* Return true only if the last char of the tag is matched. */
11738 return tag == tend;
11739}
11740
11741/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11742static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11743{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11744 const char *al = smp->data.u.str.str;
11745 const char *end = al + smp->data.u.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11746 const char *token;
11747 int toklen;
11748 int qvalue;
11749 const char *str;
11750 const char *w;
11751 int best_q = 0;
11752
11753 /* Set the constant to the sample, because the output of the
11754 * function will be peek in the constant configuration string.
11755 */
11756 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11757 smp->data.u.str.size = 0;
11758 smp->data.u.str.str = "";
11759 smp->data.u.str.len = 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11760
11761 /* Parse the accept language */
11762 while (1) {
11763
11764 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11765 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11766 al++;
11767 if (al >= end)
11768 break;
11769
11770 /* Start of the fisrt word. */
11771 token = al;
11772
11773 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11774 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11775 al++;
11776 if (al == token)
11777 goto expect_comma;
11778
11779 /* Length of the token. */
11780 toklen = al - token;
11781 qvalue = 1000;
11782
11783 /* Check if the token exists in the list. If the token not exists,
11784 * jump to the next token.
11785 */
11786 str = args[0].data.str.str;
11787 w = str;
11788 while (1) {
11789 if (*str == ';' || *str == '\0') {
11790 if (language_range_match(token, toklen, w, str-w))
11791 goto look_for_q;
11792 if (*str == '\0')
11793 goto expect_comma;
11794 w = str + 1;
11795 }
11796 str++;
11797 }
11798 goto expect_comma;
11799
11800look_for_q:
11801
11802 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11803 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11804 al++;
11805 if (al >= end)
11806 goto process_value;
11807
11808 /* If ',' is found, process the result */
11809 if (*al == ',')
11810 goto process_value;
11811
11812 /* If the character is different from ';', look
11813 * for the end of the header part in best effort.
11814 */
11815 if (*al != ';')
11816 goto expect_comma;
11817
11818 /* Assumes that the char is ';', now expect "q=". */
11819 al++;
11820
11821 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11822 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11823 al++;
11824 if (al >= end)
11825 goto process_value;
11826
11827 /* Expect 'q'. If no 'q', continue in best effort */
11828 if (*al != 'q')
11829 goto process_value;
11830 al++;
11831
11832 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11833 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11834 al++;
11835 if (al >= end)
11836 goto process_value;
11837
11838 /* Expect '='. If no '=', continue in best effort */
11839 if (*al != '=')
11840 goto process_value;
11841 al++;
11842
11843 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11844 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11845 al++;
11846 if (al >= end)
11847 goto process_value;
11848
11849 /* Parse the q value. */
11850 qvalue = parse_qvalue(al, &al);
11851
11852process_value:
11853
11854 /* If the new q value is the best q value, then store the associated
11855 * language in the response. If qvalue is the biggest value (1000),
11856 * break the process.
11857 */
11858 if (qvalue > best_q) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11859 smp->data.u.str.str = (char *)w;
11860 smp->data.u.str.len = str - w;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11861 if (qvalue >= 1000)
11862 break;
11863 best_q = qvalue;
11864 }
11865
11866expect_comma:
11867
11868 /* Expect comma or end. If the end is detected, quit the loop. */
11869 while (al < end && *al != ',')
11870 al++;
11871 if (al >= end)
11872 break;
11873
11874 /* Comma is found, jump it and restart the analyzer. */
11875 al++;
11876 }
11877
11878 /* Set default value if required. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11879 if (smp->data.u.str.len == 0 && args[1].type == ARGT_STR) {
11880 smp->data.u.str.str = args[1].data.str.str;
11881 smp->data.u.str.len = args[1].data.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11882 }
11883
11884 /* Return true only if a matching language was found. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11885 return smp->data.u.str.len != 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11886}
11887
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11888/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11889static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11890{
11891 /* If the constant flag is set or if not size is avalaible at
11892 * the end of the buffer, copy the string in other buffer
11893 * before decoding.
11894 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11895 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]11896 struct chunk *str = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11897 memcpy(str->str, smp->data.u.str.str, smp->data.u.str.len);
11898 smp->data.u.str.str = str->str;
11899 smp->data.u.str.size = str->size;
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11900 smp->flags &= ~SMP_F_CONST;
11901 }
11902
11903 /* Add final \0 required by url_decode(), and convert the input string. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11904 smp->data.u.str.str[smp->data.u.str.len] = '\0';
11905 smp->data.u.str.len = url_decode(smp->data.u.str.str);
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11906 return 1;
11907}
11908
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11909static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
11910{
11911 struct proxy *fe = strm_fe(smp->strm);
11912 int idx, i;
11913 struct cap_hdr *hdr;
11914 int len;
11915
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11916 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11917 return 0;
11918
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11919 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11920
11921 /* Check the availibity of the capture id. */
11922 if (idx > fe->nb_req_cap - 1)
11923 return 0;
11924
11925 /* Look for the original configuration. */
11926 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
11927 hdr != NULL && i != idx ;
11928 i--, hdr = hdr->next);
11929 if (!hdr)
11930 return 0;
11931
11932 /* check for the memory allocation */
11933 if (smp->strm->req_cap[hdr->index] == NULL)
11934 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
11935 if (smp->strm->req_cap[hdr->index] == NULL)
11936 return 0;
11937
11938 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11939 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11940 if (len > hdr->len)
11941 len = hdr->len;
11942
11943 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11944 memcpy(smp->strm->req_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11945 smp->strm->req_cap[idx][len] = '\0';
11946
11947 return 1;
11948}
11949
11950static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
11951{
11952 struct proxy *fe = strm_fe(smp->strm);
11953 int idx, i;
11954 struct cap_hdr *hdr;
11955 int len;
11956
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11957 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11958 return 0;
11959
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11960 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11961
11962 /* Check the availibity of the capture id. */
11963 if (idx > fe->nb_rsp_cap - 1)
11964 return 0;
11965
11966 /* Look for the original configuration. */
11967 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
11968 hdr != NULL && i != idx ;
11969 i--, hdr = hdr->next);
11970 if (!hdr)
11971 return 0;
11972
11973 /* check for the memory allocation */
11974 if (smp->strm->res_cap[hdr->index] == NULL)
11975 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
11976 if (smp->strm->res_cap[hdr->index] == NULL)
11977 return 0;
11978
11979 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11980 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11981 if (len > hdr->len)
11982 len = hdr->len;
11983
11984 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11985 memcpy(smp->strm->res_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11986 smp->strm->res_cap[idx][len] = '\0';
11987
11988 return 1;
11989}
11990
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11991/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11992 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11993 * the relevant part of the request line accordingly. Then it updates various
11994 * pointers to the next elements which were moved, and the total buffer length.
11995 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11996 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
11997 * error, though this can be revisited when this code is finally exploited.
11998 *
11999 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12000 * query string and 3 to replace uri.
12001 *
12002 * In query string case, the mark question '?' must be set at the start of the
12003 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12004 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12005int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12006 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12007{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12008 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12009 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12010 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12011 int delta;
12012
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12013 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12014 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12015 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12016 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12017
12018 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12019 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12020 txn->req.sl.rq.m_l += delta;
12021 txn->req.sl.rq.u += delta;
12022 txn->req.sl.rq.v += delta;
12023 break;
12024
12025 case 1: // path
12026 cur_ptr = http_get_path(txn);
12027 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12028 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12029
12030 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12031 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]12032 cur_end++;
12033
12034 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12035 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12036 txn->req.sl.rq.u_l += delta;
12037 txn->req.sl.rq.v += delta;
12038 break;
12039
12040 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12041 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12042 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12043 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12044 while (cur_ptr < cur_end && *cur_ptr != '?')
12045 cur_ptr++;
12046
12047 /* skip the question mark or indicate that we must insert it
12048 * (but only if the format string is not empty then).
12049 */
12050 if (cur_ptr < cur_end)
12051 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12052 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12053 offset = 0;
12054
12055 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12056 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12057 txn->req.sl.rq.u_l += delta;
12058 txn->req.sl.rq.v += delta;
12059 break;
12060
12061 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12062 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12063 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12064
12065 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12066 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12067 txn->req.sl.rq.u_l += delta;
12068 txn->req.sl.rq.v += delta;
12069 break;
12070
12071 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12072 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12073 }
12074
12075 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12076 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12077 txn->req.sl.rq.l += delta;
12078 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12079 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12080 return 0;
12081}
12082
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12083/* This function replace the HTTP status code and the associated message. The
12084 * variable <status> contains the new status code. This function never fails.
12085 */
12086void http_set_status(unsigned int status, struct stream *s)
12087{
12088 struct http_txn *txn = s->txn;
12089 char *cur_ptr, *cur_end;
12090 int delta;
12091 char *res;
12092 int c_l;
12093 const char *msg;
12094 int msg_len;
12095
12096 chunk_reset(&trash);
12097
12098 res = ultoa_o(status, trash.str, trash.size);
12099 c_l = res - trash.str;
12100
12101 trash.str[c_l] = ' ';
12102 trash.len = c_l + 1;
12103
12104 msg = get_reason(status);
12105 msg_len = strlen(msg);
12106
12107 strncpy(&trash.str[trash.len], msg, trash.size - trash.len);
12108 trash.len += msg_len;
12109
12110 cur_ptr = s->res.buf->p + txn->rsp.sl.st.c;
12111 cur_end = s->res.buf->p + txn->rsp.sl.st.r + txn->rsp.sl.st.r_l;
12112
12113 /* commit changes and adjust message */
12114 delta = buffer_replace2(s->res.buf, cur_ptr, cur_end, trash.str, trash.len);
12115
12116 /* adjust res line offsets and lengths */
12117 txn->rsp.sl.st.r += c_l - txn->rsp.sl.st.c_l;
12118 txn->rsp.sl.st.c_l = c_l;
12119 txn->rsp.sl.st.r_l = msg_len;
12120
12121 delta = trash.len - (cur_end - cur_ptr);
12122 txn->rsp.sl.st.l += delta;
12123 txn->hdr_idx.v[0].len += delta;
12124 http_msg_move_end(&txn->rsp, delta);
12125}
12126
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12127/* This function executes one of the set-{method,path,query,uri} actions. It
12128 * builds a string in the trash from the specified format string. It finds
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12129 * the action to be performed in <http.action>, previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12130 * parse_set_req_line(). The replacement action is excuted by the function
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12131 * http_action_set_req_line(). It always returns ACT_RET_CONT. If an error
12132 * occurs the action is canceled, but the rule processing continue.
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12133 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12134enum act_return http_action_set_req_line(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12135 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12136{
12137 chunk_reset(&trash);
12138
12139 /* If we have to create a query string, prepare a '?'. */
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12140 if (rule->arg.http.action == 2)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12141 trash.str[trash.len++] = '?';
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12142 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.http.logfmt);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12143
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12144 http_replace_req_line(rule->arg.http.action, trash.str, trash.len, px, s);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12145 return ACT_RET_CONT;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12146}
12147
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12148/* This function is just a compliant action wrapper for "set-status". */
12149enum act_return action_http_set_status(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12150 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12151{
12152 http_set_status(rule->arg.status.code, s);
12153 return ACT_RET_CONT;
12154}
12155
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12156/* parse an http-request action among :
12157 * set-method
12158 * set-path
12159 * set-query
12160 * set-uri
12161 *
12162 * All of them accept a single argument of type string representing a log-format.
12163 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12164 * 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]12165 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12166 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12167enum act_parse_ret parse_set_req_line(const char **args, int *orig_arg, struct proxy *px,
12168 struct act_rule *rule, char **err)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12169{
12170 int cur_arg = *orig_arg;
12171
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12172 rule->action = ACT_CUSTOM;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12173
12174 switch (args[0][4]) {
12175 case 'm' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12176 rule->arg.http.action = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12177 rule->action_ptr = http_action_set_req_line;
12178 break;
12179 case 'p' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12180 rule->arg.http.action = 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12181 rule->action_ptr = http_action_set_req_line;
12182 break;
12183 case 'q' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12184 rule->arg.http.action = 2;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12185 rule->action_ptr = http_action_set_req_line;
12186 break;
12187 case 'u' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12188 rule->arg.http.action = 3;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12189 rule->action_ptr = http_action_set_req_line;
12190 break;
12191 default:
12192 memprintf(err, "internal error: unhandled action '%s'", args[0]);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12193 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12194 }
12195
12196 if (!*args[cur_arg] ||
12197 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12198 memprintf(err, "expects exactly 1 argument <format>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12199 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12200 }
12201
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12202 LIST_INIT(&rule->arg.http.logfmt);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12203 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12204 parse_logformat_string(args[cur_arg], proxy, &rule->arg.http.logfmt, LOG_OPT_HTTP,
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12205 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
12206 proxy->conf.args.file, proxy->conf.args.line);
12207
12208 (*orig_arg)++;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12209 return ACT_RET_PRS_OK;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12210}
12211
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12212/* parse set-status action:
12213 * This action accepts a single argument of type int representing
12214 * an http status code. It returns ACT_RET_PRS_OK on success,
12215 * ACT_RET_PRS_ERR on error.
12216 */
12217enum act_parse_ret parse_http_set_status(const char **args, int *orig_arg, struct proxy *px,
12218 struct act_rule *rule, char **err)
12219{
12220 char *error;
12221
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12222 rule->action = ACT_CUSTOM;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12223 rule->action_ptr = action_http_set_status;
12224
12225 /* Check if an argument is available */
12226 if (!*args[*orig_arg]) {
12227 memprintf(err, "expects exactly 1 argument <status>");
12228 return ACT_RET_PRS_ERR;
12229 }
12230
12231 /* convert status code as integer */
12232 rule->arg.status.code = strtol(args[*orig_arg], &error, 10);
12233 if (*error != '\0' || rule->arg.status.code < 100 || rule->arg.status.code > 999) {
12234 memprintf(err, "expects an integer status code between 100 and 999");
12235 return ACT_RET_PRS_ERR;
12236 }
12237
12238 (*orig_arg)++;
12239 return ACT_RET_PRS_OK;
12240}
12241
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12242/* This function executes the "capture" action. It executes a fetch expression,
12243 * turns the result into a string and puts it in a capture slot. It always
12244 * returns 1. If an error occurs the action is cancelled, but the rule
12245 * processing continues.
12246 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12247enum act_return http_action_req_capture(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12248 struct session *sess, struct stream *s, int flags)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12249{
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12250 struct sample *key;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12251 struct cap_hdr *h = rule->arg.cap.hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12252 char **cap = s->req_cap;
12253 int len;
12254
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12255 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]12256 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12257 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12258
12259 if (cap[h->index] == NULL)
12260 cap[h->index] = pool_alloc2(h->pool);
12261
12262 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12263 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12264
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12265 len = key->data.u.str.len;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12266 if (len > h->len)
12267 len = h->len;
12268
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12269 memcpy(cap[h->index], key->data.u.str.str, len);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12270 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12271 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12272}
12273
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12274/* This function executes the "capture" action and store the result in a
12275 * capture slot if exists. It executes a fetch expression, turns the result
12276 * into a string and puts it in a capture slot. It always returns 1. If an
12277 * error occurs the action is cancelled, but the rule processing continues.
12278 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12279enum 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]12280 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12281{
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12282 struct sample *key;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12283 struct cap_hdr *h;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12284 char **cap = s->req_cap;
12285 struct proxy *fe = strm_fe(s);
12286 int len;
12287 int i;
12288
12289 /* Look for the original configuration. */
12290 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12291 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12292 i--, h = h->next);
12293 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12294 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12295
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12296 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]12297 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12298 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12299
12300 if (cap[h->index] == NULL)
12301 cap[h->index] = pool_alloc2(h->pool);
12302
12303 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12304 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12305
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12306 len = key->data.u.str.len;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12307 if (len > h->len)
12308 len = h->len;
12309
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12310 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12311 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12312 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12313}
12314
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12315/* parse an "http-request capture" action. It takes a single argument which is
12316 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12317 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12318 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12319 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12320enum act_parse_ret parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px,
12321 struct act_rule *rule, char **err)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12322{
12323 struct sample_expr *expr;
12324 struct cap_hdr *hdr;
12325 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12326 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12327
12328 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12329 if (strcmp(args[cur_arg], "if") == 0 ||
12330 strcmp(args[cur_arg], "unless") == 0)
12331 break;
12332
12333 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12334 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12335 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12336 }
12337
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12338 cur_arg = *orig_arg;
12339 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12340 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12341 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12342
12343 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12344 memprintf(err,
12345 "fetch method '%s' extracts information from '%s', none of which is available here",
12346 args[cur_arg-1], sample_src_names(expr->fetch->use));
12347 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12348 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12349 }
12350
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12351 if (!args[cur_arg] || !*args[cur_arg]) {
12352 memprintf(err, "expects 'len or 'id'");
12353 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12354 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12355 }
12356
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12357 if (strcmp(args[cur_arg], "len") == 0) {
12358 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12359
12360 if (!(px->cap & PR_CAP_FE)) {
12361 memprintf(err, "proxy '%s' has no frontend capability", px->id);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12362 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12363 }
12364
12365 proxy->conf.args.ctx = ARGC_CAP;
12366
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12367 if (!args[cur_arg]) {
12368 memprintf(err, "missing length value");
12369 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12370 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12371 }
12372 /* we copy the table name for now, it will be resolved later */
12373 len = atoi(args[cur_arg]);
12374 if (len <= 0) {
12375 memprintf(err, "length must be > 0");
12376 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12377 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12378 }
12379 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12380
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12381 if (!len) {
12382 memprintf(err, "a positive 'len' argument is mandatory");
12383 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12384 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12385 }
12386
12387 hdr = calloc(sizeof(struct cap_hdr), 1);
12388 hdr->next = px->req_cap;
12389 hdr->name = NULL; /* not a header capture */
12390 hdr->namelen = 0;
12391 hdr->len = len;
12392 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12393 hdr->index = px->nb_req_cap++;
12394
12395 px->req_cap = hdr;
12396 px->to_log |= LW_REQHDR;
12397
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12398 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12399 rule->action_ptr = http_action_req_capture;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12400 rule->arg.cap.expr = expr;
12401 rule->arg.cap.hdr = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12402 }
12403
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12404 else if (strcmp(args[cur_arg], "id") == 0) {
12405 int id;
12406 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12407
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12408 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12409
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12410 if (!args[cur_arg]) {
12411 memprintf(err, "missing id value");
12412 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12413 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12414 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12415
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12416 id = strtol(args[cur_arg], &error, 10);
12417 if (*error != '\0') {
12418 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12419 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12420 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12421 }
12422 cur_arg++;
12423
12424 proxy->conf.args.ctx = ARGC_CAP;
12425
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12426 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12427 rule->action_ptr = http_action_req_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12428 rule->arg.capid.expr = expr;
12429 rule->arg.capid.idx = id;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12430 }
12431
12432 else {
12433 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12434 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12435 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12436 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12437
12438 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12439 return ACT_RET_PRS_OK;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12440}
12441
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12442/* This function executes the "capture" action and store the result in a
12443 * capture slot if exists. It executes a fetch expression, turns the result
12444 * into a string and puts it in a capture slot. It always returns 1. If an
12445 * error occurs the action is cancelled, but the rule processing continues.
12446 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12447enum 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]12448 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12449{
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12450 struct sample *key;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12451 struct cap_hdr *h;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12452 char **cap = s->res_cap;
12453 struct proxy *fe = strm_fe(s);
12454 int len;
12455 int i;
12456
12457 /* Look for the original configuration. */
12458 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12459 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12460 i--, h = h->next);
12461 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12462 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12463
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12464 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]12465 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12466 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12467
12468 if (cap[h->index] == NULL)
12469 cap[h->index] = pool_alloc2(h->pool);
12470
12471 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12472 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12473
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12474 len = key->data.u.str.len;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12475 if (len > h->len)
12476 len = h->len;
12477
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12478 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12479 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12480 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12481}
12482
12483/* parse an "http-response capture" action. It takes a single argument which is
12484 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12485 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12486 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12487 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12488enum act_parse_ret parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px,
12489 struct act_rule *rule, char **err)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12490{
12491 struct sample_expr *expr;
12492 int cur_arg;
12493 int id;
12494 char *error;
12495
12496 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12497 if (strcmp(args[cur_arg], "if") == 0 ||
12498 strcmp(args[cur_arg], "unless") == 0)
12499 break;
12500
12501 if (cur_arg < *orig_arg + 3) {
12502 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12503 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12504 }
12505
12506 cur_arg = *orig_arg;
12507 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12508 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12509 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12510
12511 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12512 memprintf(err,
12513 "fetch method '%s' extracts information from '%s', none of which is available here",
12514 args[cur_arg-1], sample_src_names(expr->fetch->use));
12515 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12516 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12517 }
12518
12519 if (!args[cur_arg] || !*args[cur_arg]) {
12520 memprintf(err, "expects 'len or 'id'");
12521 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12522 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12523 }
12524
12525 if (strcmp(args[cur_arg], "id") != 0) {
12526 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12527 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12528 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12529 }
12530
12531 cur_arg++;
12532
12533 if (!args[cur_arg]) {
12534 memprintf(err, "missing id value");
12535 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12536 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12537 }
12538
12539 id = strtol(args[cur_arg], &error, 10);
12540 if (*error != '\0') {
12541 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12542 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12543 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12544 }
12545 cur_arg++;
12546
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12547 proxy->conf.args.ctx = ARGC_CAP;
12548
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12549 rule->action = ACT_CUSTOM;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12550 rule->action_ptr = http_action_res_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12551 rule->arg.capid.expr = expr;
12552 rule->arg.capid.idx = id;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12553
12554 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12555 return ACT_RET_PRS_OK;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12556}
12557
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12558/*
12559 * Return the struct http_req_action_kw associated to a keyword.
12560 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12561struct action_kw *action_http_req_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12562{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12563 return action_lookup(&http_req_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12564}
12565
12566/*
12567 * Return the struct http_res_action_kw associated to a keyword.
12568 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12569struct action_kw *action_http_res_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12570{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12571 return action_lookup(&http_res_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12572}
12573
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12574/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12575/* All supported ACL keywords must be declared here. */
12576/************************************************************************/
12577
12578/* Note: must not be declared <const> as its list will be overwritten.
12579 * Please take care of keeping this list alphabetically sorted.
12580 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12581static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12582 { "base", "base", PAT_MATCH_STR },
12583 { "base_beg", "base", PAT_MATCH_BEG },
12584 { "base_dir", "base", PAT_MATCH_DIR },
12585 { "base_dom", "base", PAT_MATCH_DOM },
12586 { "base_end", "base", PAT_MATCH_END },
12587 { "base_len", "base", PAT_MATCH_LEN },
12588 { "base_reg", "base", PAT_MATCH_REG },
12589 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]12590
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12591 { "cook", "req.cook", PAT_MATCH_STR },
12592 { "cook_beg", "req.cook", PAT_MATCH_BEG },
12593 { "cook_dir", "req.cook", PAT_MATCH_DIR },
12594 { "cook_dom", "req.cook", PAT_MATCH_DOM },
12595 { "cook_end", "req.cook", PAT_MATCH_END },
12596 { "cook_len", "req.cook", PAT_MATCH_LEN },
12597 { "cook_reg", "req.cook", PAT_MATCH_REG },
12598 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12599
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12600 { "hdr", "req.hdr", PAT_MATCH_STR },
12601 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
12602 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
12603 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
12604 { "hdr_end", "req.hdr", PAT_MATCH_END },
12605 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
12606 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
12607 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12608
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12609 /* these two declarations uses strings with list storage (in place
12610 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
12611 * and delete functions are relative to the list management. The parse
12612 * and match method are related to the corresponding fetch methods. This
12613 * is very particular ACL declaration mode.
12614 */
12615 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
12616 { "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]12617
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12618 { "path", "path", PAT_MATCH_STR },
12619 { "path_beg", "path", PAT_MATCH_BEG },
12620 { "path_dir", "path", PAT_MATCH_DIR },
12621 { "path_dom", "path", PAT_MATCH_DOM },
12622 { "path_end", "path", PAT_MATCH_END },
12623 { "path_len", "path", PAT_MATCH_LEN },
12624 { "path_reg", "path", PAT_MATCH_REG },
12625 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12626
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12627 { "req_ver", "req.ver", PAT_MATCH_STR },
12628 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12629
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12630 { "scook", "res.cook", PAT_MATCH_STR },
12631 { "scook_beg", "res.cook", PAT_MATCH_BEG },
12632 { "scook_dir", "res.cook", PAT_MATCH_DIR },
12633 { "scook_dom", "res.cook", PAT_MATCH_DOM },
12634 { "scook_end", "res.cook", PAT_MATCH_END },
12635 { "scook_len", "res.cook", PAT_MATCH_LEN },
12636 { "scook_reg", "res.cook", PAT_MATCH_REG },
12637 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12638
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12639 { "shdr", "res.hdr", PAT_MATCH_STR },
12640 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
12641 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
12642 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
12643 { "shdr_end", "res.hdr", PAT_MATCH_END },
12644 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
12645 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
12646 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12647
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12648 { "url", "url", PAT_MATCH_STR },
12649 { "url_beg", "url", PAT_MATCH_BEG },
12650 { "url_dir", "url", PAT_MATCH_DIR },
12651 { "url_dom", "url", PAT_MATCH_DOM },
12652 { "url_end", "url", PAT_MATCH_END },
12653 { "url_len", "url", PAT_MATCH_LEN },
12654 { "url_reg", "url", PAT_MATCH_REG },
12655 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12656
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12657 { "urlp", "urlp", PAT_MATCH_STR },
12658 { "urlp_beg", "urlp", PAT_MATCH_BEG },
12659 { "urlp_dir", "urlp", PAT_MATCH_DIR },
12660 { "urlp_dom", "urlp", PAT_MATCH_DOM },
12661 { "urlp_end", "urlp", PAT_MATCH_END },
12662 { "urlp_len", "urlp", PAT_MATCH_LEN },
12663 { "urlp_reg", "urlp", PAT_MATCH_REG },
12664 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12665
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]12666 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12667}};
12668
12669/************************************************************************/
12670/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12671/************************************************************************/
12672/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12673static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12674 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12675 { "base32", smp_fetch_base32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12676 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12677
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]12678 /* capture are allocated and are permanent in the stream */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12679 { "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]12680
12681 /* retrieve these captures from the HTTP logs */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12682 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12683 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12684 { "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]12685
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12686 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
12687 { "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]12688
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12689 /* cookie is valid in both directions (eg: for "stick ...") but cook*
12690 * are only here to match the ACL's name, are request-only and are used
12691 * for ACL compatibility only.
12692 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12693 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12694 { "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]12695 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12696 { "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]12697
12698 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
12699 * only here to match the ACL's name, are request-only and are used for
12700 * ACL compatibility only.
12701 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12702 { "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]12703 { "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]12704 { "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]12705 { "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]12706
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]12707 { "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]12708 { "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]12709 { "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]12710 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12711 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]12712 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12713
12714 /* HTTP protocol on the request path */
12715 { "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]12716 { "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]12717
12718 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12719 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
12720 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12721
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]12722 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12723 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
12724 { "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]12725 { "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]12726
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12727 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12728 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
12729 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12730
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12731 /* 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]12732 { "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]12733 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12734 { "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]12735
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12736 { "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]12737 { "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]12738 { "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]12739 { "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]12740 { "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]12741 { "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]12742 { "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]12743
12744 /* 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]12745 { "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]12746 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12747 { "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]12748
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12749 { "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]12750 { "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]12751 { "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]12752 { "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]12753 { "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]12754 { "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]12755 { "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]12756
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12757 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12758 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12759 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12760 { "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]12761 { "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]12762
12763 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12764 { "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]12765 { "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]12766 { "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]12767 { "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]12768
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12769 { "status", smp_fetch_stcode, 0, NULL, SMP_T_SINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12770 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12771 { "url32", smp_fetch_url32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12772 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12773 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12774 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]12775 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12776 { "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]12777 { "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]12778 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12779}};
12780
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12781
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12782/************************************************************************/
12783/* All supported converter keywords must be declared here. */
12784/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12785/* Note: must not be declared <const> as its list will be overwritten */
12786static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12787 { "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]12788 { "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]12789 { "capture-req", smp_conv_req_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
12790 { "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]12791 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12792 { NULL, NULL, 0, 0, 0 },
12793}};
12794
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12795
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12796/************************************************************************/
12797/* All supported http-request action keywords must be declared here. */
12798/************************************************************************/
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12799struct action_kw_list http_req_actions = {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12800 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12801 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12802 { "set-method", parse_set_req_line },
12803 { "set-path", parse_set_req_line },
12804 { "set-query", parse_set_req_line },
12805 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]12806 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12807 }
12808};
12809
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12810struct action_kw_list http_res_actions = {
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12811 .kw = {
12812 { "capture", parse_http_res_capture },
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12813 { "set-status", parse_http_set_status },
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12814 { NULL, NULL }
12815 }
12816};
12817
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12818__attribute__((constructor))
12819static void __http_protocol_init(void)
12820{
12821 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]12822 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12823 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12824 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12825 http_res_keywords_register(&http_res_actions);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12826}
12827
12828
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]12829/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]12830 * Local variables:
12831 * c-indent-level: 8
12832 * c-basic-offset: 8
12833 * End:
12834 */