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git01.mediatek.com / haproxy / 1973e81c0647a3e76abc9725f531f991f4ea0f58 / . / src / proto_http.c
blob: 650e02a29306681568366d32a8cc7335601cb879 [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
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]278static inline int http_msg_forward_body(struct stream *s, struct http_msg *msg);
279static inline int http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]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 Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]494 * RFC2616/RFC5234/RFC7230 for those chars. A token is any ASCII char that is
495 * neither a separator nor a CTL char. An http ver_token is any ASCII which can
496 * be found in an HTTP version, which includes 'H', 'T', 'P', '/', '.' and any
497 * digit. Note: please do not overwrite values in assignment since gcc-2.95
498 * will not handle them correctly. It's worth noting that chars 128..255 are
499 * nothing, not even control chars.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]500 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]501const unsigned char http_char_classes[256] = {
502 [ 0] = HTTP_FLG_CTL,
503 [ 1] = HTTP_FLG_CTL,
504 [ 2] = HTTP_FLG_CTL,
505 [ 3] = HTTP_FLG_CTL,
506 [ 4] = HTTP_FLG_CTL,
507 [ 5] = HTTP_FLG_CTL,
508 [ 6] = HTTP_FLG_CTL,
509 [ 7] = HTTP_FLG_CTL,
510 [ 8] = HTTP_FLG_CTL,
511 [ 9] = HTTP_FLG_SPHT | HTTP_FLG_LWS | HTTP_FLG_SEP | HTTP_FLG_CTL,
512 [ 10] = HTTP_FLG_CRLF | HTTP_FLG_LWS | HTTP_FLG_CTL,
513 [ 11] = HTTP_FLG_CTL,
514 [ 12] = HTTP_FLG_CTL,
515 [ 13] = HTTP_FLG_CRLF | HTTP_FLG_LWS | HTTP_FLG_CTL,
516 [ 14] = HTTP_FLG_CTL,
517 [ 15] = HTTP_FLG_CTL,
518 [ 16] = HTTP_FLG_CTL,
519 [ 17] = HTTP_FLG_CTL,
520 [ 18] = HTTP_FLG_CTL,
521 [ 19] = HTTP_FLG_CTL,
522 [ 20] = HTTP_FLG_CTL,
523 [ 21] = HTTP_FLG_CTL,
524 [ 22] = HTTP_FLG_CTL,
525 [ 23] = HTTP_FLG_CTL,
526 [ 24] = HTTP_FLG_CTL,
527 [ 25] = HTTP_FLG_CTL,
528 [ 26] = HTTP_FLG_CTL,
529 [ 27] = HTTP_FLG_CTL,
530 [ 28] = HTTP_FLG_CTL,
531 [ 29] = HTTP_FLG_CTL,
532 [ 30] = HTTP_FLG_CTL,
533 [ 31] = HTTP_FLG_CTL,
534 [' '] = HTTP_FLG_SPHT | HTTP_FLG_LWS | HTTP_FLG_SEP,
535 ['!'] = HTTP_FLG_TOK,
536 ['"'] = HTTP_FLG_SEP,
537 ['#'] = HTTP_FLG_TOK,
538 ['$'] = HTTP_FLG_TOK,
539 ['%'] = HTTP_FLG_TOK,
540 ['&'] = HTTP_FLG_TOK,
541 [ 39] = HTTP_FLG_TOK,
542 ['('] = HTTP_FLG_SEP,
543 [')'] = HTTP_FLG_SEP,
544 ['*'] = HTTP_FLG_TOK,
545 ['+'] = HTTP_FLG_TOK,
546 [','] = HTTP_FLG_SEP,
547 ['-'] = HTTP_FLG_TOK,
548 ['.'] = HTTP_FLG_TOK | HTTP_FLG_VER,
549 ['/'] = HTTP_FLG_SEP | HTTP_FLG_VER,
550 ['0'] = HTTP_FLG_TOK | HTTP_FLG_VER,
551 ['1'] = HTTP_FLG_TOK | HTTP_FLG_VER,
552 ['2'] = HTTP_FLG_TOK | HTTP_FLG_VER,
553 ['3'] = HTTP_FLG_TOK | HTTP_FLG_VER,
554 ['4'] = HTTP_FLG_TOK | HTTP_FLG_VER,
555 ['5'] = HTTP_FLG_TOK | HTTP_FLG_VER,
556 ['6'] = HTTP_FLG_TOK | HTTP_FLG_VER,
557 ['7'] = HTTP_FLG_TOK | HTTP_FLG_VER,
558 ['8'] = HTTP_FLG_TOK | HTTP_FLG_VER,
559 ['9'] = HTTP_FLG_TOK | HTTP_FLG_VER,
560 [':'] = HTTP_FLG_SEP,
561 [';'] = HTTP_FLG_SEP,
562 ['<'] = HTTP_FLG_SEP,
563 ['='] = HTTP_FLG_SEP,
564 ['>'] = HTTP_FLG_SEP,
565 ['?'] = HTTP_FLG_SEP,
566 ['@'] = HTTP_FLG_SEP,
567 ['A'] = HTTP_FLG_TOK,
568 ['B'] = HTTP_FLG_TOK,
569 ['C'] = HTTP_FLG_TOK,
570 ['D'] = HTTP_FLG_TOK,
571 ['E'] = HTTP_FLG_TOK,
572 ['F'] = HTTP_FLG_TOK,
573 ['G'] = HTTP_FLG_TOK,
574 ['H'] = HTTP_FLG_TOK | HTTP_FLG_VER,
575 ['I'] = HTTP_FLG_TOK,
576 ['J'] = HTTP_FLG_TOK,
577 ['K'] = HTTP_FLG_TOK,
578 ['L'] = HTTP_FLG_TOK,
579 ['M'] = HTTP_FLG_TOK,
580 ['N'] = HTTP_FLG_TOK,
581 ['O'] = HTTP_FLG_TOK,
582 ['P'] = HTTP_FLG_TOK | HTTP_FLG_VER,
583 ['Q'] = HTTP_FLG_TOK,
584 ['R'] = HTTP_FLG_TOK | HTTP_FLG_VER,
585 ['S'] = HTTP_FLG_TOK | HTTP_FLG_VER,
586 ['T'] = HTTP_FLG_TOK | HTTP_FLG_VER,
587 ['U'] = HTTP_FLG_TOK,
588 ['V'] = HTTP_FLG_TOK,
589 ['W'] = HTTP_FLG_TOK,
590 ['X'] = HTTP_FLG_TOK,
591 ['Y'] = HTTP_FLG_TOK,
592 ['Z'] = HTTP_FLG_TOK,
593 ['['] = HTTP_FLG_SEP,
594 [ 92] = HTTP_FLG_SEP,
595 [']'] = HTTP_FLG_SEP,
596 ['^'] = HTTP_FLG_TOK,
597 ['_'] = HTTP_FLG_TOK,
598 ['`'] = HTTP_FLG_TOK,
599 ['a'] = HTTP_FLG_TOK,
600 ['b'] = HTTP_FLG_TOK,
601 ['c'] = HTTP_FLG_TOK,
602 ['d'] = HTTP_FLG_TOK,
603 ['e'] = HTTP_FLG_TOK,
604 ['f'] = HTTP_FLG_TOK,
605 ['g'] = HTTP_FLG_TOK,
606 ['h'] = HTTP_FLG_TOK,
607 ['i'] = HTTP_FLG_TOK,
608 ['j'] = HTTP_FLG_TOK,
609 ['k'] = HTTP_FLG_TOK,
610 ['l'] = HTTP_FLG_TOK,
611 ['m'] = HTTP_FLG_TOK,
612 ['n'] = HTTP_FLG_TOK,
613 ['o'] = HTTP_FLG_TOK,
614 ['p'] = HTTP_FLG_TOK,
615 ['q'] = HTTP_FLG_TOK,
616 ['r'] = HTTP_FLG_TOK,
617 ['s'] = HTTP_FLG_TOK,
618 ['t'] = HTTP_FLG_TOK,
619 ['u'] = HTTP_FLG_TOK,
620 ['v'] = HTTP_FLG_TOK,
621 ['w'] = HTTP_FLG_TOK,
622 ['x'] = HTTP_FLG_TOK,
623 ['y'] = HTTP_FLG_TOK,
624 ['z'] = HTTP_FLG_TOK,
625 ['{'] = HTTP_FLG_SEP,
626 ['|'] = HTTP_FLG_TOK,
627 ['}'] = HTTP_FLG_SEP,
628 ['~'] = HTTP_FLG_TOK,
629 [127] = HTTP_FLG_CTL,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]630};
631
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]632/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]633 * Adds a header and its CRLF at the tail of the message's buffer, just before
634 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]635 * The header is also automatically added to the index <hdr_idx>, and the end
636 * of headers is automatically adjusted. The number of bytes added is returned
637 * on success, otherwise <0 is returned indicating an error.
638 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]639int 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]640{
641 int bytes, len;
642
643 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]644 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]645 if (!bytes)
646 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]647 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]648 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
649}
650
651/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]652 * Adds a header and its CRLF at the tail of the message's buffer, just before
653 * 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]654 * the buffer is only opened and the space reserved, but nothing is copied.
655 * The header is also automatically added to the index <hdr_idx>, and the end
656 * of headers is automatically adjusted. The number of bytes added is returned
657 * on success, otherwise <0 is returned indicating an error.
658 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]659int http_header_add_tail2(struct http_msg *msg,
660 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]661{
662 int bytes;
663
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]664 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]665 if (!bytes)
666 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]667 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]668 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
669}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]670
671/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]672 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
673 * If so, returns the position of the first non-space character relative to
674 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
675 * to return a pointer to the place after the first space. Returns 0 if the
676 * header name does not match. Checks are case-insensitive.
677 */
678int http_header_match2(const char *hdr, const char *end,
679 const char *name, int len)
680{
681 const char *val;
682
683 if (hdr + len >= end)
684 return 0;
685 if (hdr[len] != ':')
686 return 0;
687 if (strncasecmp(hdr, name, len) != 0)
688 return 0;
689 val = hdr + len + 1;
690 while (val < end && HTTP_IS_SPHT(*val))
691 val++;
692 if ((val >= end) && (len + 2 <= end - hdr))
693 return len + 2; /* we may replace starting from second space */
694 return val - hdr;
695}
696
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]697/* Find the first or next occurrence of header <name> in message buffer <sol>
698 * using headers index <idx>, and return it in the <ctx> structure. This
699 * structure holds everything necessary to use the header and find next
700 * occurrence. If its <idx> member is 0, the header is searched from the
701 * beginning. Otherwise, the next occurrence is returned. The function returns
702 * 1 when it finds a value, and 0 when there is no more. It is very similar to
703 * http_find_header2() except that it is designed to work with full-line headers
704 * whose comma is not a delimiter but is part of the syntax. As a special case,
705 * if ctx->val is NULL when searching for a new values of a header, the current
706 * header is rescanned. This allows rescanning after a header deletion.
707 */
708int http_find_full_header2(const char *name, int len,
709 char *sol, struct hdr_idx *idx,
710 struct hdr_ctx *ctx)
711{
712 char *eol, *sov;
713 int cur_idx, old_idx;
714
715 cur_idx = ctx->idx;
716 if (cur_idx) {
717 /* We have previously returned a header, let's search another one */
718 sol = ctx->line;
719 eol = sol + idx->v[cur_idx].len;
720 goto next_hdr;
721 }
722
723 /* first request for this header */
724 sol += hdr_idx_first_pos(idx);
725 old_idx = 0;
726 cur_idx = hdr_idx_first_idx(idx);
727 while (cur_idx) {
728 eol = sol + idx->v[cur_idx].len;
729
730 if (len == 0) {
731 /* No argument was passed, we want any header.
732 * To achieve this, we simply build a fake request. */
733 while (sol + len < eol && sol[len] != ':')
734 len++;
735 name = sol;
736 }
737
738 if ((len < eol - sol) &&
739 (sol[len] == ':') &&
740 (strncasecmp(sol, name, len) == 0)) {
741 ctx->del = len;
742 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]743 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]744 sov++;
745
746 ctx->line = sol;
747 ctx->prev = old_idx;
748 ctx->idx = cur_idx;
749 ctx->val = sov - sol;
750 ctx->tws = 0;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]751 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]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 Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]766/* Find the first or next header field in message buffer <sol> using headers
767 * index <idx>, and return it in the <ctx> structure. This structure holds
768 * everything necessary to use the header and find next occurrence. If its
769 * <idx> member is 0, the first header is retrieved. Otherwise, the next
770 * occurrence is returned. The function returns 1 when it finds a value, and
771 * 0 when there is no more. It is equivalent to http_find_full_header2() with
772 * no header name.
773 */
774int http_find_next_header(char *sol, struct hdr_idx *idx, struct hdr_ctx *ctx)
775{
776 char *eol, *sov;
777 int cur_idx, old_idx;
778 int len;
779
780 cur_idx = ctx->idx;
781 if (cur_idx) {
782 /* We have previously returned a header, let's search another one */
783 sol = ctx->line;
784 eol = sol + idx->v[cur_idx].len;
785 goto next_hdr;
786 }
787
788 /* first request for this header */
789 sol += hdr_idx_first_pos(idx);
790 old_idx = 0;
791 cur_idx = hdr_idx_first_idx(idx);
792 while (cur_idx) {
793 eol = sol + idx->v[cur_idx].len;
794
795 len = 0;
796 while (1) {
797 if (len >= eol - sol)
798 goto next_hdr;
799 if (sol[len] == ':')
800 break;
801 len++;
802 }
803
804 ctx->del = len;
805 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]806 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]807 sov++;
808
809 ctx->line = sol;
810 ctx->prev = old_idx;
811 ctx->idx = cur_idx;
812 ctx->val = sov - sol;
813 ctx->tws = 0;
814
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]815 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]816 eol--;
817 ctx->tws++;
818 }
819 ctx->vlen = eol - sov;
820 return 1;
821
822 next_hdr:
823 sol = eol + idx->v[cur_idx].cr + 1;
824 old_idx = cur_idx;
825 cur_idx = idx->v[cur_idx].next;
826 }
827 return 0;
828}
829
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]830/* Find the end of the header value contained between <s> and <e>. See RFC2616,
831 * par 2.2 for more information. Note that it requires a valid header to return
832 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]833 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]834char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]835{
836 int quoted, qdpair;
837
838 quoted = qdpair = 0;
Willy Tarreaue6d9c212016-11-05 18:23:38 +0100[diff] [blame]839
840#if defined(__x86_64__) || \
841 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
842 defined(__ARM_ARCH_7A__)
843 /* speedup: skip everything not a comma nor a double quote */
844 for (; s <= e - sizeof(int); s += sizeof(int)) {
845 unsigned int c = *(int *)s; // comma
846 unsigned int q = c; // quote
847
848 c ^= 0x2c2c2c2c; // contains one zero on a comma
849 q ^= 0x22222222; // contains one zero on a quote
850
851 c = (c - 0x01010101) & ~c; // contains 0x80 below a comma
852 q = (q - 0x01010101) & ~q; // contains 0x80 below a quote
853
854 if ((c | q) & 0x80808080)
855 break; // found a comma or a quote
856 }
857#endif
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]858 for (; s < e; s++) {
859 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]860 else if (quoted) {
861 if (*s == '\\') qdpair = 1;
862 else if (*s == '"') quoted = 0;
863 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]864 else if (*s == '"') quoted = 1;
865 else if (*s == ',') return s;
866 }
867 return s;
868}
869
870/* Find the first or next occurrence of header <name> in message buffer <sol>
871 * using headers index <idx>, and return it in the <ctx> structure. This
872 * structure holds everything necessary to use the header and find next
873 * occurrence. If its <idx> member is 0, the header is searched from the
874 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]875 * 1 when it finds a value, and 0 when there is no more. It is designed to work
876 * with headers defined as comma-separated lists. As a special case, if ctx->val
877 * is NULL when searching for a new values of a header, the current header is
878 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]879 */
880int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]881 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]882 struct hdr_ctx *ctx)
883{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]884 char *eol, *sov;
885 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]886
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]887 cur_idx = ctx->idx;
888 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]889 /* We have previously returned a value, let's search
890 * another one on the same line.
891 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]892 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]893 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]894 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]895 eol = sol + idx->v[cur_idx].len;
896
897 if (sov >= eol)
898 /* no more values in this header */
899 goto next_hdr;
900
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]901 /* values remaining for this header, skip the comma but save it
902 * for later use (eg: for header deletion).
903 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]904 sov++;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]905 while (sov < eol && HTTP_IS_LWS((*sov)))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]906 sov++;
907
908 goto return_hdr;
909 }
910
911 /* first request for this header */
912 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]913 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]914 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]915 while (cur_idx) {
916 eol = sol + idx->v[cur_idx].len;
917
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]918 if (len == 0) {
919 /* No argument was passed, we want any header.
920 * To achieve this, we simply build a fake request. */
921 while (sol + len < eol && sol[len] != ':')
922 len++;
923 name = sol;
924 }
925
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]926 if ((len < eol - sol) &&
927 (sol[len] == ':') &&
928 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]929 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]930 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]931 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]932 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]933
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]934 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]935 ctx->prev = old_idx;
936 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]937 ctx->idx = cur_idx;
938 ctx->val = sov - sol;
939
940 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]941 ctx->tws = 0;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]942 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]943 eol--;
944 ctx->tws++;
945 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]946 ctx->vlen = eol - sov;
947 return 1;
948 }
949 next_hdr:
950 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]951 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]952 cur_idx = idx->v[cur_idx].next;
953 }
954 return 0;
955}
956
957int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]958 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]959 struct hdr_ctx *ctx)
960{
961 return http_find_header2(name, strlen(name), sol, idx, ctx);
962}
963
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]964/* Remove one value of a header. This only works on a <ctx> returned by one of
965 * the http_find_header functions. The value is removed, as well as surrounding
966 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]967 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]968 * message <msg>. The new index is returned. If it is zero, it means there is
969 * no more header, so any processing may stop. The ctx is always left in a form
970 * that can be handled by http_find_header2() to find next occurrence.
971 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]972int 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]973{
974 int cur_idx = ctx->idx;
975 char *sol = ctx->line;
976 struct hdr_idx_elem *hdr;
977 int delta, skip_comma;
978
979 if (!cur_idx)
980 return 0;
981
982 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]983 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]984 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]985 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]986 http_msg_move_end(msg, delta);
987 idx->used--;
988 hdr->len = 0; /* unused entry */
989 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]990 if (idx->tail == ctx->idx)
991 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]992 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau7c1c2172015-01-07 17:23:50 +0100[diff] [blame]993 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]994 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]995 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]996 return ctx->idx;
997 }
998
999 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1000 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
1001 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1002 */
1003
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1004 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1005 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1006 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1007 NULL, 0);
1008 hdr->len += delta;
1009 http_msg_move_end(msg, delta);
1010 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1011 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1012 return ctx->idx;
1013}
1014
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1015/* This function handles a server error at the stream interface level. The
1016 * stream interface is assumed to be already in a closed state. An optional
1017 * message is copied into the input buffer, and an HTTP status code stored.
1018 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]1019 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1020 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1021static void http_server_error(struct stream *s, struct stream_interface *si,
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1022 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1023{
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]1024 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]1025 channel_auto_read(si_oc(si));
1026 channel_abort(si_oc(si));
1027 channel_auto_close(si_oc(si));
1028 channel_erase(si_oc(si));
1029 channel_auto_close(si_ic(si));
1030 channel_auto_read(si_ic(si));
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]1031 if (status > 0 && msg) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1032 s->txn->status = status;
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]1033 bo_inject(si_ic(si), msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1034 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1035 if (!(s->flags & SF_ERR_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]1036 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1037 if (!(s->flags & SF_FINST_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]1038 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1039}
1040
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1041/* This function returns the appropriate error location for the given stream
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1042 * and message.
1043 */
1044
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1045struct chunk *http_error_message(struct stream *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1046{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1047 if (s->be->errmsg[msgnum].str)
1048 return &s->be->errmsg[msgnum];
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]1049 else if (strm_fe(s)->errmsg[msgnum].str)
1050 return &strm_fe(s)->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1051 else
1052 return &http_err_chunks[msgnum];
1053}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1054
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]1055void
1056http_reply_and_close(struct stream *s, short status, struct chunk *msg)
1057{
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]1058 s->txn->flags &= ~TX_WAIT_NEXT_RQ;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]1059 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]1060 stream_int_retnclose(&s->si[0], msg);
1061}
1062
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1063/*
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]1064 * returns a known method among HTTP_METH_* or HTTP_METH_OTHER for all unknown
1065 * ones.
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1066 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]1067enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1068{
1069 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1070 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1071
1072 m = ((unsigned)*str - 'A');
1073
1074 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1075 for (h = http_methods[m]; h->len > 0; h++) {
1076 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1077 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1078 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1079 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1080 };
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1081 }
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]1082 return HTTP_METH_OTHER;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1083}
1084
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1085/* Parse the URI from the given transaction (which is assumed to be in request
1086 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
1087 * It is returned otherwise.
1088 */
Thierry FOURNIER3c331782015-09-17 19:33:35 +0200[diff] [blame]1089char *http_get_path(struct http_txn *txn)
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1090{
1091 char *ptr, *end;
1092
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1093 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1094 end = ptr + txn->req.sl.rq.u_l;
1095
1096 if (ptr >= end)
1097 return NULL;
1098
1099 /* RFC2616, par. 5.1.2 :
1100 * Request-URI = "*" | absuri | abspath | authority
1101 */
1102
1103 if (*ptr == '*')
1104 return NULL;
1105
1106 if (isalpha((unsigned char)*ptr)) {
1107 /* this is a scheme as described by RFC3986, par. 3.1 */
1108 ptr++;
1109 while (ptr < end &&
1110 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
1111 ptr++;
1112 /* skip '://' */
1113 if (ptr == end || *ptr++ != ':')
1114 return NULL;
1115 if (ptr == end || *ptr++ != '/')
1116 return NULL;
1117 if (ptr == end || *ptr++ != '/')
1118 return NULL;
1119 }
1120 /* skip [user[:passwd]@]host[:[port]] */
1121
1122 while (ptr < end && *ptr != '/')
1123 ptr++;
1124
1125 if (ptr == end)
1126 return NULL;
1127
1128 /* OK, we got the '/' ! */
1129 return ptr;
1130}
1131
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]1132/* Parse the URI from the given string and look for the "/" beginning the PATH.
1133 * If not found, return NULL. It is returned otherwise.
1134 */
1135static char *
1136http_get_path_from_string(char *str)
1137{
1138 char *ptr = str;
1139
1140 /* RFC2616, par. 5.1.2 :
1141 * Request-URI = "*" | absuri | abspath | authority
1142 */
1143
1144 if (*ptr == '*')
1145 return NULL;
1146
1147 if (isalpha((unsigned char)*ptr)) {
1148 /* this is a scheme as described by RFC3986, par. 3.1 */
1149 ptr++;
1150 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
1151 ptr++;
1152 /* skip '://' */
1153 if (*ptr == '\0' || *ptr++ != ':')
1154 return NULL;
1155 if (*ptr == '\0' || *ptr++ != '/')
1156 return NULL;
1157 if (*ptr == '\0' || *ptr++ != '/')
1158 return NULL;
1159 }
1160 /* skip [user[:passwd]@]host[:[port]] */
1161
1162 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
1163 ptr++;
1164
1165 if (*ptr == '\0' || *ptr == ' ')
1166 return NULL;
1167
1168 /* OK, we got the '/' ! */
1169 return ptr;
1170}
1171
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]1172/* Returns a 302 for a redirectable request that reaches a server working in
1173 * in redirect mode. This may only be called just after the stream interface
1174 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
1175 * follow normal proxy processing. NOTE: this function is designed to support
1176 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1177 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1178void http_perform_server_redirect(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1179{
1180 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1181 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1182 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1183 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1184
1185 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1186 trash.len = strlen(HTTP_302);
1187 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1188
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]1189 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1190
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1191 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1192 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1193 return;
1194
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1195 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1196 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1197 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
1198 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1199 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1200
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1201 /* 3: add the request URI. Since it was already forwarded, we need
1202 * to temporarily rewind the buffer.
1203 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1204 txn = s->txn;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1205 b_rew(s->req.buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1206
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1207 path = http_get_path(txn);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1208 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]1209
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1210 b_adv(s->req.buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1211
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1212 if (!path)
1213 return;
1214
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1215 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1216 return;
1217
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1218 memcpy(trash.str + trash.len, path, len);
1219 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1220
1221 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1222 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
1223 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1224 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1225 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
1226 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1227 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1228
1229 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]1230 si_shutr(si);
1231 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1232 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1233 si->state = SI_ST_CLO;
1234
1235 /* send the message */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1236 http_server_error(s, si, SF_ERR_LOCAL, SF_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1237
1238 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]1239 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]1240 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1241}
1242
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1243/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1244 * that the server side is closed. Note that err_type is actually a
1245 * bitmask, where almost only aborts may be cumulated with other
1246 * values. We consider that aborted operations are more important
1247 * than timeouts or errors due to the fact that nobody else in the
1248 * logs might explain incomplete retries. All others should avoid
1249 * being cumulated. It should normally not be possible to have multiple
1250 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1251 * Note that connection errors appearing on the second request of a keep-alive
1252 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1253 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1254void http_return_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1255{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1256 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1257
1258 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1259 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1260 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1261 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1262 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1263 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1264 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1265 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1266 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1267 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1268 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1269 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1270 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1271 else if (err_type & SI_ET_CONN_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1272 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1273 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1274 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1275 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1276 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_C,
1277 503, (s->flags & SF_SRV_REUSED) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1278 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1279 else if (err_type & SI_ET_CONN_RES)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1280 http_server_error(s, si, SF_ERR_RESOURCE, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1281 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1282 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1283 else /* SI_ET_CONN_OTHER and others */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1284 http_server_error(s, si, SF_ERR_INTERNAL, SF_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1285 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1286}
1287
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1288extern const char sess_term_cond[8];
1289extern const char sess_fin_state[8];
1290extern const char *monthname[12];
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]1291struct pool_head *pool2_http_txn;
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1292struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1293struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1294struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1295
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1296/*
1297 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1298 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1299 */
1300void capture_headers(char *som, struct hdr_idx *idx,
1301 char **cap, struct cap_hdr *cap_hdr)
1302{
1303 char *eol, *sol, *col, *sov;
1304 int cur_idx;
1305 struct cap_hdr *h;
1306 int len;
1307
1308 sol = som + hdr_idx_first_pos(idx);
1309 cur_idx = hdr_idx_first_idx(idx);
1310
1311 while (cur_idx) {
1312 eol = sol + idx->v[cur_idx].len;
1313
1314 col = sol;
1315 while (col < eol && *col != ':')
1316 col++;
1317
1318 sov = col + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]1319 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1320 sov++;
1321
1322 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1323 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1324 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1325 if (cap[h->index] == NULL)
1326 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1327 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1328
1329 if (cap[h->index] == NULL) {
1330 Alert("HTTP capture : out of memory.\n");
1331 continue;
1332 }
1333
1334 len = eol - sov;
1335 if (len > h->len)
1336 len = h->len;
1337
1338 memcpy(cap[h->index], sov, len);
1339 cap[h->index][len]=0;
1340 }
1341 }
1342 sol = eol + idx->v[cur_idx].cr + 1;
1343 cur_idx = idx->v[cur_idx].next;
1344 }
1345}
1346
1347
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1348/* either we find an LF at <ptr> or we jump to <bad>.
1349 */
1350#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1351
1352/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1353 * otherwise to <http_msg_ood> with <state> set to <st>.
1354 */
1355#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1356 ptr++; \
1357 if (likely(ptr < end)) \
1358 goto good; \
1359 else { \
1360 state = (st); \
1361 goto http_msg_ood; \
1362 } \
1363 } while (0)
1364
1365
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1366/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1367 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1368 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1369 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1370 * will give undefined results.
1371 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1372 * and that msg->sol points to the beginning of the response.
1373 * If a complete line is found (which implies that at least one CR or LF is
1374 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1375 * returned indicating an incomplete line (which does not mean that parts have
1376 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1377 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1378 * upon next call.
1379 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1380 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1381 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1382 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1383 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1384 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1385const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1386 enum ht_state state, const char *ptr, const char *end,
1387 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1388{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1389 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1390
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1391 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1392 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1393 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1394 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1395 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1396
1397 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1398 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1399 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1400 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1401 state = HTTP_MSG_ERROR;
1402 break;
1403
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1404 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1405 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1406 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1407 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1408 goto http_msg_rpcode;
1409 }
1410 if (likely(HTTP_IS_SPHT(*ptr)))
1411 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1412 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1413 state = HTTP_MSG_ERROR;
1414 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1415
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1416 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1417 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1418 if (likely(!HTTP_IS_LWS(*ptr)))
1419 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1420
1421 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1422 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1423 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1424 }
1425
1426 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1427 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1428 http_msg_rsp_reason:
1429 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1430 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1431 msg->sl.st.r_l = 0;
1432 goto http_msg_rpline_eol;
1433
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1434 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1435 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1436 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1437 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1438 goto http_msg_rpreason;
1439 }
1440 if (likely(HTTP_IS_SPHT(*ptr)))
1441 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1442 /* so it's a CR/LF, so there is no reason phrase */
1443 goto http_msg_rsp_reason;
1444
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1445 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1446 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1447 if (likely(!HTTP_IS_CRLF(*ptr)))
1448 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1449 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1450 http_msg_rpline_eol:
1451 /* We have seen the end of line. Note that we do not
1452 * necessarily have the \n yet, but at least we know that we
1453 * have EITHER \r OR \n, otherwise the response would not be
1454 * complete. We can then record the response length and return
1455 * to the caller which will be able to register it.
1456 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1457 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1458 return ptr;
1459
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1460 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1461#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1462 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1463 exit(1);
1464#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1465 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1466 }
1467
1468 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1469 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1470 if (ret_state)
1471 *ret_state = state;
1472 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1473 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1474 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1475}
1476
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1477/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1478 * This function parses a request line between <ptr> and <end>, starting with
1479 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1480 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1481 * will give undefined results.
1482 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1483 * and that msg->sol points to the beginning of the request.
1484 * If a complete line is found (which implies that at least one CR or LF is
1485 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1486 * returned indicating an incomplete line (which does not mean that parts have
1487 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1488 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1489 * upon next call.
1490 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1491 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1492 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1493 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1494 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1495 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1496const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1497 enum ht_state state, const char *ptr, const char *end,
1498 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1499{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1500 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1501
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1502 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1503 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1504 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1505 if (likely(HTTP_IS_TOKEN(*ptr)))
1506 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1507
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1509 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1510 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1511 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1512
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1513 if (likely(HTTP_IS_CRLF(*ptr))) {
1514 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1515 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1516 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1517 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1518 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1519 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1520 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1521 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1522 msg->sl.rq.v_l = 0;
1523 goto http_msg_rqline_eol;
1524 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1525 state = HTTP_MSG_ERROR;
1526 break;
1527
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1528 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1529 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1530 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1531 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1532 goto http_msg_rquri;
1533 }
1534 if (likely(HTTP_IS_SPHT(*ptr)))
1535 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1536 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1537 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1538
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1539 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1540 http_msg_rquri:
Willy Tarreau5f10ea32016-11-05 17:52:06 +0100[diff] [blame]1541#if defined(__x86_64__) || \
1542 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
1543 defined(__ARM_ARCH_7A__)
1544 /* speedup: skip bytes not between 0x21 and 0x7e inclusive */
1545 while (ptr <= end - sizeof(int)) {
1546 int x = *(int *)ptr - 0x21212121;
1547 if (x & 0x80808080)
1548 break;
1549
1550 x -= 0x5e5e5e5e;
1551 if (!(x & 0x80808080))
1552 break;
1553
1554 ptr += sizeof(int);
1555 }
1556#endif
1557 http_msg_rquri2:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1558 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau5f10ea32016-11-05 17:52:06 +0100[diff] [blame]1559 EAT_AND_JUMP_OR_RETURN(http_msg_rquri2, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1560
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1561 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1562 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1563 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1564 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1565
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1566 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1567 /* non-ASCII chars are forbidden unless option
1568 * accept-invalid-http-request is enabled in the frontend.
1569 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1570 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1571 if (msg->err_pos < -1)
1572 goto invalid_char;
1573 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1574 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1575 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1576 }
1577
1578 if (likely(HTTP_IS_CRLF(*ptr))) {
1579 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1580 goto http_msg_req09_uri_e;
1581 }
1582
1583 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1584 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1585 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1586 state = HTTP_MSG_ERROR;
1587 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1588
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1589 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1590 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1591 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1592 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1593 goto http_msg_rqver;
1594 }
1595 if (likely(HTTP_IS_SPHT(*ptr)))
1596 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1597 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1598 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1599
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1600 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1601 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1602 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1603 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1604
1605 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1606 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1607 http_msg_rqline_eol:
1608 /* We have seen the end of line. Note that we do not
1609 * necessarily have the \n yet, but at least we know that we
1610 * have EITHER \r OR \n, otherwise the request would not be
1611 * complete. We can then record the request length and return
1612 * to the caller which will be able to register it.
1613 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1614 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1615 return ptr;
1616 }
1617
1618 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1619 state = HTTP_MSG_ERROR;
1620 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1621
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1622 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1623#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1624 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1625 exit(1);
1626#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1627 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1628 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1629
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1630 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1631 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1632 if (ret_state)
1633 *ret_state = state;
1634 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1635 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1636 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1637}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1638
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1639/*
1640 * Returns the data from Authorization header. Function may be called more
1641 * than once so data is stored in txn->auth_data. When no header is found
1642 * 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]1643 * searching again for something we are unable to find anyway. However, if
1644 * the result if valid, the cache is not reused because we would risk to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1645 * have the credentials overwritten by another stream in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1646 */
1647
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1648/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1649 * set according to global.tune.bufsize.
1650 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1651char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1652
1653int
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1654get_http_auth(struct stream *s)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1655{
1656
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1657 struct http_txn *txn = s->txn;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1658 struct chunk auth_method;
1659 struct hdr_ctx ctx;
1660 char *h, *p;
1661 int len;
1662
1663#ifdef DEBUG_AUTH
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1664 printf("Auth for stream %p: %d\n", s, txn->auth.method);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1665#endif
1666
1667 if (txn->auth.method == HTTP_AUTH_WRONG)
1668 return 0;
1669
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1670 txn->auth.method = HTTP_AUTH_WRONG;
1671
1672 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1673
1674 if (txn->flags & TX_USE_PX_CONN) {
1675 h = "Proxy-Authorization";
1676 len = strlen(h);
1677 } else {
1678 h = "Authorization";
1679 len = strlen(h);
1680 }
1681
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1682 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]1683 return 0;
1684
1685 h = ctx.line + ctx.val;
1686
1687 p = memchr(h, ' ', ctx.vlen);
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1688 len = p - h;
1689 if (!p || len <= 0)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1690 return 0;
1691
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]1692 if (chunk_initlen(&auth_method, h, 0, len) != 1)
1693 return 0;
1694
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1695 chunk_initlen(&txn->auth.method_data, p + 1, 0, ctx.vlen - len - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1696
1697 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1698
1699 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1700 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1701
1702 if (len < 0)
1703 return 0;
1704
1705
1706 get_http_auth_buff[len] = '\0';
1707
1708 p = strchr(get_http_auth_buff, ':');
1709
1710 if (!p)
1711 return 0;
1712
1713 txn->auth.user = get_http_auth_buff;
1714 *p = '\0';
1715 txn->auth.pass = p+1;
1716
1717 txn->auth.method = HTTP_AUTH_BASIC;
1718 return 1;
1719 }
1720
1721 return 0;
1722}
1723
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1724
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1725/*
1726 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1727 * depending on the initial msg->msg_state. The caller is responsible for
1728 * ensuring that the message does not wrap. The function can be preempted
1729 * everywhere when data are missing and recalled at the exact same location
1730 * with no information loss. The message may even be realigned between two
1731 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1732 * 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]1733 * fields. Note that msg->sol will be initialized after completing the first
1734 * state, so that none of the msg pointers has to be initialized prior to the
1735 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1736 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1737void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1738{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1739 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1740 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1741 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1742
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1743 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1744 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1745 ptr = buf->p + msg->next;
1746 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1747
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1748 if (unlikely(ptr >= end))
1749 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1750
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1751 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1752 /*
1753 * First, states that are specific to the response only.
1754 * We check them first so that request and headers are
1755 * closer to each other (accessed more often).
1756 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1757 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1758 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1759 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1760 /* we have a start of message, but we have to check
1761 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1762 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1763 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1764 if (unlikely(ptr != buf->p)) {
1765 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1766 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1767 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1768 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1769 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1770 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1771 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1772 hdr_idx_init(idx);
1773 state = HTTP_MSG_RPVER;
1774 goto http_msg_rpver;
1775 }
1776
1777 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1778 goto http_msg_invalid;
1779
1780 if (unlikely(*ptr == '\n'))
1781 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1782 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1783 /* stop here */
1784
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1785 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1786 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1787 EXPECT_LF_HERE(ptr, http_msg_invalid);
1788 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1789 /* stop here */
1790
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1791 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1792 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1793 case HTTP_MSG_RPVER_SP:
1794 case HTTP_MSG_RPCODE:
1795 case HTTP_MSG_RPCODE_SP:
1796 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1797 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1798 state, ptr, end,
1799 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1800 if (unlikely(!ptr))
1801 return;
1802
1803 /* we have a full response and we know that we have either a CR
1804 * or an LF at <ptr>.
1805 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1806 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1807
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1808 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1809 if (likely(*ptr == '\r'))
1810 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1811 goto http_msg_rpline_end;
1812
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1813 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1814 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1815 /* msg->sol must point to the first of CR or LF. */
1816 EXPECT_LF_HERE(ptr, http_msg_invalid);
1817 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1818 /* stop here */
1819
1820 /*
1821 * Second, states that are specific to the request only
1822 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1823 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1824 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1825 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1826 /* we have a start of message, but we have to check
1827 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1828 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1829 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1830 if (likely(ptr != buf->p)) {
1831 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1832 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1833 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1834 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1835 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1836 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1837 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1838 state = HTTP_MSG_RQMETH;
1839 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1840 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1841
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1842 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1843 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1844
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1845 if (unlikely(*ptr == '\n'))
1846 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1847 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1848 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1849
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1850 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1851 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1852 EXPECT_LF_HERE(ptr, http_msg_invalid);
1853 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1854 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1855
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1856 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1857 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1858 case HTTP_MSG_RQMETH_SP:
1859 case HTTP_MSG_RQURI:
1860 case HTTP_MSG_RQURI_SP:
1861 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1862 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1863 state, ptr, end,
1864 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1865 if (unlikely(!ptr))
1866 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1867
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1868 /* we have a full request and we know that we have either a CR
1869 * or an LF at <ptr>.
1870 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1871 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1872
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1873 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1874 if (likely(*ptr == '\r'))
1875 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1876 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1877
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1878 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1879 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1880 /* check for HTTP/0.9 request : no version information available.
1881 * msg->sol must point to the first of CR or LF.
1882 */
1883 if (unlikely(msg->sl.rq.v_l == 0))
1884 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1885
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1886 EXPECT_LF_HERE(ptr, http_msg_invalid);
1887 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1888 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1889
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1890 /*
1891 * Common states below
1892 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1893 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1894 http_msg_hdr_first:
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 Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1903
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1904 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1905 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1906 /* assumes msg->sol points to the first char */
1907 if (likely(HTTP_IS_TOKEN(*ptr)))
1908 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1909
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1910 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1911 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]1912
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1913 if (likely(msg->err_pos < -1) || *ptr == '\n')
1914 goto http_msg_invalid;
1915
1916 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1917 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1918
1919 /* and we still accept this non-token character */
1920 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1921
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1922 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1923 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1924 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1925 if (likely(HTTP_IS_SPHT(*ptr)))
1926 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]1927
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1928 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1929 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1930
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1931 if (likely(!HTTP_IS_CRLF(*ptr))) {
1932 goto http_msg_hdr_val;
1933 }
1934
1935 if (likely(*ptr == '\r'))
1936 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1937 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1938
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1939 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1940 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1941 EXPECT_LF_HERE(ptr, http_msg_invalid);
1942 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]1943
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1944 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1945 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1946 if (likely(HTTP_IS_SPHT(*ptr))) {
1947 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1948 for (; buf->p + msg->sov < ptr; msg->sov++)
1949 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1950 goto http_msg_hdr_l1_sp;
1951 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1952 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1953 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1954 goto http_msg_complete_header;
1955
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1956 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1957 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1958 /* assumes msg->sol points to the first char, and msg->sov
1959 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1960 */
Willy Tarreau0431f9d2016-11-05 17:35:40 +0100[diff] [blame]1961
1962 /* speedup: we'll skip packs of 4 or 8 bytes not containing bytes 0x0D
1963 * and lower. In fact since most of the time is spent in the loop, we
1964 * also remove the sign bit test so that bytes 0x8e..0x0d break the
1965 * loop, but we don't care since they're very rare in header values.
1966 */
1967#if defined(__x86_64__)
1968 while (ptr <= end - sizeof(long)) {
1969 if ((*(long *)ptr - 0x0e0e0e0e0e0e0e0eULL) & 0x8080808080808080ULL)
1970 goto http_msg_hdr_val2;
1971 ptr += sizeof(long);
1972 }
1973#endif
1974#if defined(__x86_64__) || \
1975 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
1976 defined(__ARM_ARCH_7A__)
1977 while (ptr <= end - sizeof(int)) {
1978 if ((*(int*)ptr - 0x0e0e0e0e) & 0x80808080)
1979 goto http_msg_hdr_val2;
1980 ptr += sizeof(int);
1981 }
1982#endif
1983 http_msg_hdr_val2:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1984 if (likely(!HTTP_IS_CRLF(*ptr)))
Willy Tarreau0431f9d2016-11-05 17:35:40 +0100[diff] [blame]1985 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val2, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1986
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1987 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1988 /* Note: we could also copy eol into ->eoh so that we have the
1989 * real header end in case it ends with lots of LWS, but is this
1990 * really needed ?
1991 */
1992 if (likely(*ptr == '\r'))
1993 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1994 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1995
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1996 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1997 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1998 EXPECT_LF_HERE(ptr, http_msg_invalid);
1999 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]2000
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2001 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2002 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2003 if (unlikely(HTTP_IS_SPHT(*ptr))) {
2004 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2005 for (; buf->p + msg->eol < ptr; msg->eol++)
2006 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2007 goto http_msg_hdr_val;
2008 }
2009 http_msg_complete_header:
2010 /*
2011 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2012 * Assumes msg->sol points to the first char, msg->sov points
2013 * to the first character of the value and msg->eol to the
2014 * first CR or LF so we know how the line ends. We insert last
2015 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2016 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2017 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2018 idx, idx->tail) < 0))
2019 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2020
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2021 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2022 if (likely(!HTTP_IS_CRLF(*ptr))) {
2023 goto http_msg_hdr_name;
2024 }
2025
2026 if (likely(*ptr == '\r'))
2027 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
2028 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2029
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2030 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2031 http_msg_last_lf:
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]2032 /* Assumes msg->sol points to the first of either CR or LF.
2033 * Sets ->sov and ->next to the total header length, ->eoh to
2034 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
2035 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2036 EXPECT_LF_HERE(ptr, http_msg_invalid);
2037 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2038 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]2039 msg->eoh = msg->sol;
2040 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]2041 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2042 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2043 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]2044
2045 case HTTP_MSG_ERROR:
2046 /* this may only happen if we call http_msg_analyser() twice with an error */
2047 break;
2048
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2049 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]2050#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2051 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
2052 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2053#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]2054 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2055 }
2056 http_msg_ood:
2057 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2058 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2059 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2060 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2061
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2062 http_msg_invalid:
2063 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2064 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2065 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2066 return;
2067}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]2068
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2069/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
2070 * conversion succeeded, 0 in case of error. If the request was already 1.X,
2071 * nothing is done and 1 is returned.
2072 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2073static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2074{
2075 int delta;
2076 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2077 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2078
2079 if (msg->sl.rq.v_l != 0)
2080 return 1;
2081
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]2082 /* RFC 1945 allows only GET for HTTP/0.9 requests */
2083 if (txn->meth != HTTP_METH_GET)
2084 return 0;
2085
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2086 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2087
2088 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]2089 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
2090 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2091 }
2092 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2093 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]2094 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2095 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]2096 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2097 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2098 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2099 NULL, NULL);
2100 if (unlikely(!cur_end))
2101 return 0;
2102
2103 /* we have a full HTTP/1.0 request now and we know that
2104 * we have either a CR or an LF at <ptr>.
2105 */
2106 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
2107 return 1;
2108}
2109
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2110/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2111 * and "keep-alive" values. If we already know that some headers may safely
2112 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2113 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
2114 * - 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]2115 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2116 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
2117 * found, and TX_CON_*_SET is adjusted depending on what is left so only
2118 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2119 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2120 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2121void 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]2122{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2123 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2124 const char *hdr_val = "Connection";
2125 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2126
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2127 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2128 return;
2129
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2130 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2131 hdr_val = "Proxy-Connection";
2132 hdr_len = 16;
2133 }
2134
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2135 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2136 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2137 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]2138 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2139 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2140 if (to_del & 2)
2141 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2142 else
2143 txn->flags |= TX_CON_KAL_SET;
2144 }
2145 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2146 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2147 if (to_del & 1)
2148 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2149 else
2150 txn->flags |= TX_CON_CLO_SET;
2151 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2152 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
2153 txn->flags |= TX_HDR_CONN_UPG;
2154 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2155 }
2156
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2157 txn->flags |= TX_HDR_CONN_PRS;
2158 return;
2159}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2160
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2161/* Apply desired changes on the Connection: header. Values may be removed and/or
2162 * added depending on the <wanted> flags, which are exclusively composed of
2163 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
2164 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
2165 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2166void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2167{
2168 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2169 const char *hdr_val = "Connection";
2170 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2171
2172 ctx.idx = 0;
2173
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2174
2175 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2176 hdr_val = "Proxy-Connection";
2177 hdr_len = 16;
2178 }
2179
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2180 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2181 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]2182 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2183 if (wanted & TX_CON_KAL_SET)
2184 txn->flags |= TX_CON_KAL_SET;
2185 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2186 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2187 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2188 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2189 if (wanted & TX_CON_CLO_SET)
2190 txn->flags |= TX_CON_CLO_SET;
2191 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2192 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2193 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2194 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2195
2196 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
2197 return;
2198
2199 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
2200 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2201 hdr_val = "Connection: close";
2202 hdr_len = 17;
2203 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2204 hdr_val = "Proxy-Connection: close";
2205 hdr_len = 23;
2206 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2207 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2208 }
2209
2210 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
2211 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2212 hdr_val = "Connection: keep-alive";
2213 hdr_len = 22;
2214 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2215 hdr_val = "Proxy-Connection: keep-alive";
2216 hdr_len = 28;
2217 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2218 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2219 }
2220 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2221}
2222
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2223/* Parse the chunk size at msg->next. Once done, caller should adjust ->next to
2224 * point to the first byte of data after the chunk size, so that we know we can
2225 * forward exactly msg->next bytes. msg->sol contains the exact number of bytes
2226 * forming the chunk size. That way it is always possible to differentiate
2227 * between the start of the body and the start of the data. Return the number
2228 * of byte parsed on success, 0 when some data is missing, <0 on error. Note:
2229 * this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2230 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2231static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2232{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2233 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2234 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2235 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2236 const char *end = buf->data + buf->size;
2237 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2238 unsigned int chunk = 0;
2239
2240 /* The chunk size is in the following form, though we are only
2241 * interested in the size and CRLF :
2242 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
2243 */
2244 while (1) {
2245 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2246 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2247 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2248 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2249 if (c < 0) /* not a hex digit anymore */
2250 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2251 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2252 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]2253 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2254 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2255 chunk = (chunk << 4) + c;
2256 }
2257
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2258 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2259 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2260 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2261
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]2262 while (HTTP_IS_SPHT(*ptr)) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2263 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2264 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2265 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2266 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2267 }
2268
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2269 /* Up to there, we know that at least one byte is present at *ptr. Check
2270 * for the end of chunk size.
2271 */
2272 while (1) {
2273 if (likely(HTTP_IS_CRLF(*ptr))) {
2274 /* we now have a CR or an LF at ptr */
2275 if (likely(*ptr == '\r')) {
2276 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2277 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2278 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2279 return 0;
2280 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2281
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2282 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2283 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2284 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2285 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2286 /* done */
2287 break;
2288 }
2289 else if (*ptr == ';') {
2290 /* chunk extension, ends at next CRLF */
2291 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2292 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2293 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2294 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2295
2296 while (!HTTP_IS_CRLF(*ptr)) {
2297 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2298 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2299 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2300 return 0;
2301 }
2302 /* we have a CRLF now, loop above */
2303 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2304 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2305 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2306 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2307 }
2308
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2309 /* OK we found our CRLF and now <ptr> points to the next byte, which may
2310 * or may not be present. We save the number of bytes parsed into
2311 * msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2312 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2313 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2314 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2315 msg->sol += buf->size;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2316 msg->chunk_len = chunk;
2317 msg->body_len += chunk;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2318 return msg->sol;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2319 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2320 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2321 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2322}
2323
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2324/* This function skips trailers in the buffer associated with HTTP message
2325 * <msg>. The first visited position is msg->next. If the end of the trailers is
2326 * found, the function returns >0. So, the caller can automatically schedul it
2327 * to be forwarded, and switch msg->msg_state to HTTP_MSG_DONE. If not enough
2328 * data are available, the function does not change anything except maybe
2329 * msg->sol if it could parse some lines, and returns zero. If a parse error
2330 * is encountered, the function returns < 0 and does not change anything except
2331 * maybe msg->sol. Note that the message must already be in HTTP_MSG_TRAILERS
2332 * state before calling this function, which implies that all non-trailers data
2333 * have already been scheduled for forwarding, and that msg->next exactly
2334 * matches the length of trailers already parsed and not forwarded. It is also
2335 * important to note that this function is designed to be able to parse wrapped
2336 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2337 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2338static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2339{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2340 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2341
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2342 /* we have msg->next which points to next line. Look for CRLF. But
2343 * first, we reset msg->sol */
2344 msg->sol = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2345 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2346 const char *p1 = NULL, *p2 = NULL;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2347 const char *start = b_ptr(buf, msg->next + msg->sol);
2348 const char *stop = bi_end(buf);
2349 const char *ptr = start;
2350 int bytes = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2351
2352 /* scan current line and stop at LF or CRLF */
2353 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2354 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2355 return 0;
2356
2357 if (*ptr == '\n') {
2358 if (!p1)
2359 p1 = ptr;
2360 p2 = ptr;
2361 break;
2362 }
2363
2364 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2365 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2366 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2367 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2368 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2369 p1 = ptr;
2370 }
2371
2372 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2373 if (ptr >= buf->data + buf->size)
2374 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2375 }
2376
2377 /* after LF; point to beginning of next line */
2378 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2379 if (p2 >= buf->data + buf->size)
2380 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2381
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2382 bytes = p2 - start;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2383 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2384 bytes += buf->size;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2385 msg->sol += bytes;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2386
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2387 /* LF/CRLF at beginning of line => end of trailers at p2.
2388 * Everything was scheduled for forwarding, there's nothing left
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2389 * from this message. */
2390 if (p1 == start)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2391 return 1;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2392
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2393 /* OK, next line then */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2394 }
2395}
2396
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2397/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
2398 * a possible LF alone at the end of a chunk. The caller should adjust msg->next
2399 * in order to include this part into the next forwarding phase. Note that the
2400 * caller must ensure that ->p points to the first byte to parse. It returns
2401 * the number of bytes parsed on success, so the caller can set msg_state to
2402 * HTTP_MSG_CHUNK_SIZE. If not enough data are available, the function does not
2403 * change anything and returns zero. If a parse error is encountered, the
2404 * function returns < 0. Note: this function is designed to parse wrapped CRLF
2405 * at the end of the buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2406 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2407static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2408{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2409 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2410 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2411 int bytes;
2412
2413 /* NB: we'll check data availabilty at the end. It's not a
2414 * problem because whatever we match first will be checked
2415 * against the correct length.
2416 */
2417 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2418 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2419 if (*ptr == '\r') {
2420 bytes++;
2421 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2422 if (ptr >= buf->data + buf->size)
2423 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2424 }
2425
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2426 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2427 return 0;
2428
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2429 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2430 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2431 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2432 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2433 return bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2434}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2435
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2436/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2437 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2438 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2439 * Unparsable qvalues return 1000 as "q=1.000".
2440 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2441int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2442{
2443 int q = 1000;
2444
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2445 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2446 goto out;
2447 q = (*qvalue++ - '0') * 1000;
2448
2449 if (*qvalue++ != '.')
2450 goto out;
2451
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2452 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2453 goto out;
2454 q += (*qvalue++ - '0') * 100;
2455
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2456 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2457 goto out;
2458 q += (*qvalue++ - '0') * 10;
2459
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2460 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2461 goto out;
2462 q += (*qvalue++ - '0') * 1;
2463 out:
2464 if (q > 1000)
2465 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2466 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2467 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2468 return q;
2469}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2470
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2471void 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]2472{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2473 struct proxy *fe = strm_fe(s);
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2474 int tmp = TX_CON_WANT_KAL;
2475
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2476 if (!((fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2477 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2478 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2479 tmp = TX_CON_WANT_TUN;
2480
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2481 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2482 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2483 tmp = TX_CON_WANT_TUN;
2484 }
2485
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2486 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2487 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2488 /* option httpclose + server_close => forceclose */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2489 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2490 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2491 tmp = TX_CON_WANT_CLO;
2492 else
2493 tmp = TX_CON_WANT_SCL;
2494 }
2495
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2496 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2497 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2498 tmp = TX_CON_WANT_CLO;
2499
2500 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2501 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2502
2503 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2504 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2505 /* parse the Connection header and possibly clean it */
2506 int to_del = 0;
2507 if ((msg->flags & HTTP_MSGF_VER_11) ||
2508 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2509 !((fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2510 to_del |= 2; /* remove "keep-alive" */
2511 if (!(msg->flags & HTTP_MSGF_VER_11))
2512 to_del |= 1; /* remove "close" */
2513 http_parse_connection_header(txn, msg, to_del);
2514 }
2515
2516 /* check if client or config asks for explicit close in KAL/SCL */
2517 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2518 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2519 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2520 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2521 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2522 fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2523 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2524}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2525
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2526/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2527 * processing can continue on next analysers, or zero if it either needs more
2528 * data or wants to immediately abort the request (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2529 * 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]2530 * when it has nothing left to do, and may remove any analyser when it wants to
2531 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2532 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2533int http_wait_for_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2534{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2535 /*
2536 * We will parse the partial (or complete) lines.
2537 * We will check the request syntax, and also join multi-line
2538 * headers. An index of all the lines will be elaborated while
2539 * parsing.
2540 *
2541 * For the parsing, we use a 28 states FSM.
2542 *
2543 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2544 * req->buf->p = beginning of request
2545 * req->buf->p + msg->eoh = end of processed headers / start of current one
2546 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2547 * msg->eol = end of current header or line (LF or CRLF)
2548 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2549 *
2550 * 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]2551 * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2552 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2553 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2554 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2555
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2556 int cur_idx;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2557 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2558 struct http_txn *txn = s->txn;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2559 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2560 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2561
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2562 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]2563 now_ms, __FUNCTION__,
2564 s,
2565 req,
2566 req->rex, req->wex,
2567 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2568 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2569 req->analysers);
2570
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2571 /* we're speaking HTTP here, so let's speak HTTP to the client */
2572 s->srv_error = http_return_srv_error;
2573
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2574 /* There's a protected area at the end of the buffer for rewriting
2575 * purposes. We don't want to start to parse the request if the
2576 * protected area is affected, because we may have to move processed
2577 * data later, which is much more complicated.
2578 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2579 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200[diff] [blame]2580
2581 /* This point is executed when some data is avalaible for analysis,
2582 * so we log the end of the idle time. */
2583 if (s->logs.t_idle == -1)
2584 s->logs.t_idle = tv_ms_elapsed(&s->logs.tv_accept, &now) - s->logs.t_handshake;
2585
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2586 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]2587 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2588 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2589 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2590 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2591 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2592 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2593 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2594 return 0;
2595 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2596 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2597 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2598 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2599 }
2600
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2601 /* Note that we have the same problem with the response ; we
2602 * may want to send a redirect, error or anything which requires
2603 * some spare space. So we'll ensure that we have at least
2604 * maxrewrite bytes available in the response buffer before
2605 * processing that one. This will only affect pipelined
2606 * keep-alive requests.
2607 */
2608 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2609 unlikely(!channel_is_rewritable(&s->res) ||
2610 bi_end(s->res.buf) < b_ptr(s->res.buf, txn->rsp.next) ||
2611 bi_end(s->res.buf) > s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)) {
2612 if (s->res.buf->o) {
2613 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]2614 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2615 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2616 channel_dont_connect(req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2617 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
2618 s->res.flags |= CF_WAKE_WRITE;
2619 s->res.analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2620 return 0;
2621 }
2622 }
2623
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2624 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2625 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2626 }
2627
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2628 /* 1: we might have to print this header in debug mode */
2629 if (unlikely((global.mode & MODE_DEBUG) &&
2630 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]2631 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2632 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2633
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2634 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2635 /* this is a bit complex : in case of error on the request line,
2636 * we know that rq.l is still zero, so we display only the part
2637 * up to the end of the line (truncated by debug_hdr).
2638 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2639 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2640 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2641
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2642 sol += hdr_idx_first_pos(&txn->hdr_idx);
2643 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2644
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2645 while (cur_idx) {
2646 eol = sol + txn->hdr_idx.v[cur_idx].len;
2647 debug_hdr("clihdr", s, sol, eol);
2648 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2649 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2650 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2651 }
2652
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2653
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2654 /*
2655 * Now we quickly check if we have found a full valid request.
2656 * If not so, we check the FD and buffer states before leaving.
2657 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2658 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2659 * requests are checked first. When waiting for a second request
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2660 * on a keep-alive stream, if we encounter and error, close, t/o,
2661 * we note the error in the stream flags but don't set any state.
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2662 * Since the error will be noted there, it will not be counted by
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2663 * process_stream() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2664 * Last, we may increase some tracked counters' http request errors on
2665 * the cases that are deliberately the client's fault. For instance,
2666 * a timeout or connection reset is not counted as an error. However
2667 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2668 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2669
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2670 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2671 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2672 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2673 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2674 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2675 stream_inc_http_req_ctr(s);
2676 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2677 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2678 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2679 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2680
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2681 /* 1: Since we are in header mode, if there's no space
2682 * left for headers, we won't be able to free more
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2683 * later, so the stream will never terminate. We
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2684 * must terminate it now.
2685 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2686 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2687 /* FIXME: check if URI is set and return Status
2688 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2689 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2690 stream_inc_http_req_ctr(s);
2691 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2692 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2693 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2694 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2695 goto return_bad_req;
2696 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2697
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2698 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2699 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2700 if (!(s->flags & SF_ERR_MASK))
2701 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2702
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2703 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2704 goto failed_keep_alive;
2705
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2706 if (sess->fe->options & PR_O_IGNORE_PRB)
2707 goto failed_keep_alive;
2708
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2709 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2710 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2711 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]2712 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2713 }
2714
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2715 txn->status = 400;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2716 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2717 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2718 req->analysers &= AN_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2719 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2720 proxy_inc_fe_req_ctr(sess->fe);
2721 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2722 if (sess->listener->counters)
2723 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2724
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2725 if (!(s->flags & SF_FINST_MASK))
2726 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2727 return 0;
2728 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2729
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2730 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2731 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]2732 if (!(s->flags & SF_ERR_MASK))
2733 s->flags |= SF_ERR_CLITO;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2734
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2735 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2736 goto failed_keep_alive;
2737
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2738 if (sess->fe->options & PR_O_IGNORE_PRB)
2739 goto failed_keep_alive;
2740
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2741 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2742 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2743 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]2744 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2745 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2746 txn->status = 408;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2747 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2748 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2749 req->analysers &= AN_FLT_END;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2750
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2751 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2752 proxy_inc_fe_req_ctr(sess->fe);
2753 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2754 if (sess->listener->counters)
2755 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2756
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2757 if (!(s->flags & SF_FINST_MASK))
2758 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2759 return 0;
2760 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2761
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2762 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2763 else if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2764 if (!(s->flags & SF_ERR_MASK))
2765 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2766
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2767 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2768 goto failed_keep_alive;
2769
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2770 if (sess->fe->options & PR_O_IGNORE_PRB)
2771 goto failed_keep_alive;
2772
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2773 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2774 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]2775 txn->status = 400;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2776 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2777 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2778 req->analysers &= AN_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2779 stream_inc_http_err_ctr(s);
2780 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2781 proxy_inc_fe_req_ctr(sess->fe);
2782 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2783 if (sess->listener->counters)
2784 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2785
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2786 if (!(s->flags & SF_FINST_MASK))
2787 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2788 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2789 }
2790
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2791 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2792 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2793 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2794#ifdef TCP_QUICKACK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2795 if (sess->listener->options & LI_O_NOQUICKACK && req->buf->i &&
2796 objt_conn(sess->origin) && conn_ctrl_ready(__objt_conn(sess->origin))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2797 /* We need more data, we have to re-enable quick-ack in case we
2798 * previously disabled it, otherwise we might cause the client
2799 * to delay next data.
2800 */
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2801 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]2802 }
2803#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2804
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2805 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2806 /* If the client starts to talk, let's fall back to
2807 * request timeout processing.
2808 */
2809 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2810 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2811 }
2812
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2813 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2814 if (!tick_isset(req->analyse_exp)) {
2815 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2816 (txn->flags & TX_WAIT_NEXT_RQ) &&
2817 tick_isset(s->be->timeout.httpka))
2818 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2819 else
2820 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2821 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2822
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2823 /* we're not ready yet */
2824 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2825
2826 failed_keep_alive:
2827 /* Here we process low-level errors for keep-alive requests. In
2828 * short, if the request is not the first one and it experiences
2829 * a timeout, read error or shutdown, we just silently close so
2830 * that the client can try again.
2831 */
2832 txn->status = 0;
2833 msg->msg_state = HTTP_MSG_RQBEFORE;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2834 req->analysers &= AN_FLT_END;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2835 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2836 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2837 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2838 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2839 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2840 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2841
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2842 /* OK now we have a complete HTTP request with indexed headers. Let's
2843 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2844 * 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]2845 * 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]2846 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2847 * byte after the last LF. msg->sov points to the first byte of data.
2848 * msg->eol cannot be trusted because it may have been left uninitialized
2849 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2850 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2851
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2852 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2853 proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2854
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2855 if (txn->flags & TX_WAIT_NEXT_RQ) {
2856 /* kill the pending keep-alive timeout */
2857 txn->flags &= ~TX_WAIT_NEXT_RQ;
2858 req->analyse_exp = TICK_ETERNITY;
2859 }
2860
2861
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2862 /* Maybe we found in invalid header name while we were configured not
2863 * to block on that, so we have to capture it now.
2864 */
2865 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2866 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]2867
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2868 /*
2869 * 1: identify the method
2870 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2871 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2872
2873 /* we can make use of server redirect on GET and HEAD */
2874 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2875 s->flags |= SF_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2876
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2877 /*
2878 * 2: check if the URI matches the monitor_uri.
2879 * We have to do this for every request which gets in, because
2880 * the monitor-uri is defined by the frontend.
2881 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2882 if (unlikely((sess->fe->monitor_uri_len != 0) &&
2883 (sess->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2884 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2885 sess->fe->monitor_uri,
2886 sess->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2887 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2888 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2889 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2890 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2891
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2892 s->flags |= SF_MONITOR;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2893 sess->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2894
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2895 /* Check if we want to fail this monitor request or not */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2896 list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2897 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]2898
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2899 ret = acl_pass(ret);
2900 if (cond->pol == ACL_COND_UNLESS)
2901 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2902
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2903 if (ret) {
2904 /* we fail this request, let's return 503 service unavail */
2905 txn->status = 503;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2906 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_503));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2907 if (!(s->flags & SF_ERR_MASK))
2908 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2909 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2910 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2911 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2912
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2913 /* nothing to fail, let's reply normaly */
2914 txn->status = 200;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2915 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_200));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2916 if (!(s->flags & SF_ERR_MASK))
2917 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2918 goto return_prx_cond;
2919 }
2920
2921 /*
2922 * 3: Maybe we have to copy the original REQURI for the logs ?
2923 * Note: we cannot log anymore if the request has been
2924 * classified as invalid.
2925 */
2926 if (unlikely(s->logs.logwait & LW_REQ)) {
2927 /* we have a complete HTTP request that we must log */
2928 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2929 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2930
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2931 if (urilen >= REQURI_LEN)
2932 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2933 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2934 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2935
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2936 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2937 s->do_log(s);
2938 } else {
2939 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2940 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2941 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2942
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2943 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
2944 * exactly one digit "." one digit. This check may be disabled using
2945 * option accept-invalid-http-request.
2946 */
2947 if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) {
2948 if (msg->sl.rq.v_l != 8) {
2949 msg->err_pos = msg->sl.rq.v;
2950 goto return_bad_req;
2951 }
2952
2953 if (req->buf->p[msg->sl.rq.v + 4] != '/' ||
2954 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 5]) ||
2955 req->buf->p[msg->sl.rq.v + 6] != '.' ||
2956 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 7])) {
2957 msg->err_pos = msg->sl.rq.v + 4;
2958 goto return_bad_req;
2959 }
2960 }
Willy Tarreau13317662015-05-01 13:47:08 +0200[diff] [blame]2961 else {
2962 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
2963 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
2964 goto return_bad_req;
2965 }
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2966
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2967 /* ... and check if the request is HTTP/1.1 or above */
2968 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2969 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2970 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2971 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2972 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2973
2974 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2975 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]2976
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2977 /* if the frontend has "option http-use-proxy-header", we'll check if
2978 * we have what looks like a proxied connection instead of a connection,
2979 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2980 * Note that this is *not* RFC-compliant, however browsers and proxies
2981 * happen to do that despite being non-standard :-(
2982 * We consider that a request not beginning with either '/' or '*' is
2983 * a proxied connection, which covers both "scheme://location" and
2984 * CONNECT ip:port.
2985 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2986 if ((sess->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2987 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2988 txn->flags |= TX_USE_PX_CONN;
2989
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2990 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2991 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2992
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2993 /* 5: we may need to capture headers */
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2994 if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2995 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2996 s->req_cap, sess->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2997
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2998 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
2999 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3000 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3001 * The length of a message body is determined by one of the following
3002 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3003 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3004 * 1. Any response to a HEAD request and any response with a 1xx
3005 * (Informational), 204 (No Content), or 304 (Not Modified) status
3006 * code is always terminated by the first empty line after the
3007 * header fields, regardless of the header fields present in the
3008 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3009 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3010 * 2. Any 2xx (Successful) response to a CONNECT request implies that
3011 * the connection will become a tunnel immediately after the empty
3012 * line that concludes the header fields. A client MUST ignore any
3013 * Content-Length or Transfer-Encoding header fields received in
3014 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3015 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3016 * 3. If a Transfer-Encoding header field is present and the chunked
3017 * transfer coding (Section 4.1) is the final encoding, the message
3018 * body length is determined by reading and decoding the chunked
3019 * data until the transfer coding indicates the data is complete.
3020 *
3021 * If a Transfer-Encoding header field is present in a response and
3022 * the chunked transfer coding is not the final encoding, the
3023 * message body length is determined by reading the connection until
3024 * it is closed by the server. If a Transfer-Encoding header field
3025 * is present in a request and the chunked transfer coding is not
3026 * the final encoding, the message body length cannot be determined
3027 * reliably; the server MUST respond with the 400 (Bad Request)
3028 * status code and then close the connection.
3029 *
3030 * If a message is received with both a Transfer-Encoding and a
3031 * Content-Length header field, the Transfer-Encoding overrides the
3032 * Content-Length. Such a message might indicate an attempt to
3033 * perform request smuggling (Section 9.5) or response splitting
3034 * (Section 9.4) and ought to be handled as an error. A sender MUST
3035 * remove the received Content-Length field prior to forwarding such
3036 * a message downstream.
3037 *
3038 * 4. If a message is received without Transfer-Encoding and with
3039 * either multiple Content-Length header fields having differing
3040 * field-values or a single Content-Length header field having an
3041 * invalid value, then the message framing is invalid and the
3042 * recipient MUST treat it as an unrecoverable error. If this is a
3043 * request message, the server MUST respond with a 400 (Bad Request)
3044 * status code and then close the connection. If this is a response
3045 * message received by a proxy, the proxy MUST close the connection
3046 * to the server, discard the received response, and send a 502 (Bad
3047 * Gateway) response to the client. If this is a response message
3048 * received by a user agent, the user agent MUST close the
3049 * connection to the server and discard the received response.
3050 *
3051 * 5. If a valid Content-Length header field is present without
3052 * Transfer-Encoding, its decimal value defines the expected message
3053 * body length in octets. If the sender closes the connection or
3054 * the recipient times out before the indicated number of octets are
3055 * received, the recipient MUST consider the message to be
3056 * incomplete and close the connection.
3057 *
3058 * 6. If this is a request message and none of the above are true, then
3059 * the message body length is zero (no message body is present).
3060 *
3061 * 7. Otherwise, this is a response message without a declared message
3062 * body length, so the message body length is determined by the
3063 * number of octets received prior to the server closing the
3064 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3065 */
3066
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3067 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3068 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]3069 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3070 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3071 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
3072 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3073 /* chunked not last, return badreq */
3074 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3075 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3076 }
3077
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]3078 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3079 ctx.idx = 0;
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]3080 if (msg->flags & HTTP_MSGF_TE_CHNK) {
3081 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
3082 http_remove_header2(msg, &txn->hdr_idx, &ctx);
3083 }
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3084 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]3085 signed long long cl;
3086
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3087 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3088 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3089 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3090 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3091
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3092 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3093 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3094 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3095 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3096
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3097 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3098 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3099 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3100 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3101
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3102 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3103 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3104 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3105 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3106
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3107 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3108 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3109 }
3110
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3111 /* even bodyless requests have a known length */
3112 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3113
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3114 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
3115 * only change if both the request and the config reference something else.
3116 * Option httpclose by itself sets tunnel mode where headers are mangled.
3117 * However, if another mode is set, it will affect it (eg: server-close/
3118 * keep-alive + httpclose = close). Note that we avoid to redo the same work
3119 * if FE and BE have the same settings (common). The method consists in
3120 * checking if options changed between the two calls (implying that either
3121 * one is non-null, or one of them is non-null and we are there for the first
3122 * time.
3123 */
3124 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3125 ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]3126 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3127
Willy Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]3128 /* we may have to wait for the request's body */
3129 if ((s->be->options & PR_O_WREQ_BODY) &&
3130 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
3131 req->analysers |= AN_REQ_HTTP_BODY;
3132
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3133 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3134 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3135 req->analyse_exp = TICK_ETERNITY;
3136 return 1;
3137
3138 return_bad_req:
3139 /* We centralize bad requests processing here */
3140 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3141 /* we detected a parsing error. We want to archive this request
3142 * in the dedicated proxy area for later troubleshooting.
3143 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3144 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]3145 }
3146
3147 txn->req.msg_state = HTTP_MSG_ERROR;
3148 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3149 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]3150
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3151 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3152 if (sess->listener->counters)
3153 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3154
3155 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3156 if (!(s->flags & SF_ERR_MASK))
3157 s->flags |= SF_ERR_PRXCOND;
3158 if (!(s->flags & SF_FINST_MASK))
3159 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3160
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]3161 req->analysers &= AN_FLT_END;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3162 req->analyse_exp = TICK_ETERNITY;
3163 return 0;
3164}
3165
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3166
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3167/* This function prepares an applet to handle the stats. It can deal with the
3168 * "100-continue" expectation, check that admin rules are met for POST requests,
3169 * and program a response message if something was unexpected. It cannot fail
3170 * 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]3171 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3172 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3173 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3174 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3175int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3176{
3177 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3178 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3179 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3180 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3181 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3182 struct uri_auth *uri_auth = s->be->uri_auth;
3183 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3184 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3185
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3186 appctx = si_appctx(si);
3187 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3188 appctx->st1 = appctx->st2 = 0;
3189 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3190 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3191 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3192 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3193
3194 uri = msg->chn->buf->p + msg->sl.rq.u;
3195 lookup = uri + uri_auth->uri_len;
3196
3197 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3198 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3199 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3200 break;
3201 }
3202 }
3203
3204 if (uri_auth->refresh) {
3205 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3206 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3207 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3208 break;
3209 }
3210 }
3211 }
3212
3213 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3214 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3215 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3216 break;
3217 }
3218 }
3219
Willy Tarreau1e62df92016-01-11 18:57:53 +0100[diff] [blame]3220 for (h = lookup; h <= uri + msg->sl.rq.u_l - 6; h++) {
3221 if (memcmp(h, ";typed", 6) == 0) {
3222 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
3223 appctx->ctx.stats.flags |= STAT_FMT_TYPED;
3224 break;
3225 }
3226 }
3227
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3228 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3229 if (memcmp(h, ";st=", 4) == 0) {
3230 int i;
3231 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3232 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3233 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3234 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3235 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3236 break;
3237 }
3238 }
3239 break;
3240 }
3241 }
3242
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3243 appctx->ctx.stats.scope_str = 0;
3244 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3245 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3246 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3247 int itx = 0;
3248 const char *h2;
3249 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3250 const char *err;
3251
3252 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3253 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3254 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3255 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3256 itx++;
3257 h++;
3258 }
3259
3260 if (itx > STAT_SCOPE_TXT_MAXLEN)
3261 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3262 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3263
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3264 /* 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]3265 memcpy(scope_txt, h2, itx);
3266 scope_txt[itx] = '\0';
3267 err = invalid_char(scope_txt);
3268 if (err) {
3269 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3270 appctx->ctx.stats.scope_str = 0;
3271 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3272 }
3273 break;
3274 }
3275 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3276
3277 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3278 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3279 int ret = 1;
3280
3281 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3282 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]3283 ret = acl_pass(ret);
3284 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3285 ret = !ret;
3286 }
3287
3288 if (ret) {
3289 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3290 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3291 break;
3292 }
3293 }
3294
3295 /* Was the status page requested with a POST ? */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3296 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3297 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3298 /* we'll need the request body, possibly after sending 100-continue */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3299 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE)
3300 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3301 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3302 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3303 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3304 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3305 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3306 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3307 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3308 else {
3309 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3310 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3311 }
3312
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3313 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3314 return 1;
3315}
3316
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3317/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3318 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3319 */
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3320void inet_set_tos(int fd, const struct sockaddr_storage *from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3321{
3322#ifdef IP_TOS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3323 if (from->ss_family == AF_INET)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3324 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3325#endif
3326#ifdef IPV6_TCLASS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3327 if (from->ss_family == AF_INET6) {
3328 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)from)->sin6_addr))
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3329 /* v4-mapped addresses need IP_TOS */
3330 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3331 else
3332 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3333 }
3334#endif
3335}
3336
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3337int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3338 const char* name, unsigned int name_len,
3339 const char *str, struct my_regex *re,
3340 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3341{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3342 struct hdr_ctx ctx;
3343 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3344 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3345 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3346 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3347 struct chunk *output = get_trash_chunk();
3348
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3349 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3350
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3351 /* Choose the header browsing function. */
3352 switch (action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3353 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3354 http_find_hdr_func = http_find_header2;
3355 break;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3356 case ACT_HTTP_REPLACE_HDR:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3357 http_find_hdr_func = http_find_full_header2;
3358 break;
3359 default: /* impossible */
3360 return -1;
3361 }
3362
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3363 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
3364 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3365 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3366 char *val = ctx.line + ctx.val;
3367 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3368
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3369 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
3370 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3371
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3372 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3373 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3374 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3375
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3376 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3377
3378 hdr->len += delta;
3379 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3380
3381 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3382 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3383 }
3384
3385 return 0;
3386}
3387
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3388static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3389 const char* name, unsigned int name_len,
3390 struct list *fmt, struct my_regex *re,
3391 int action)
3392{
3393 struct chunk *replace = get_trash_chunk();
3394
3395 replace->len = build_logline(s, replace->str, replace->size, fmt);
3396 if (replace->len >= replace->size - 1)
3397 return -1;
3398
3399 return http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
3400}
3401
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3402/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3403 * transaction <txn>. Returns the verdict of the first rule that prevents
3404 * further processing of the request (auth, deny, ...), and defaults to
3405 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3406 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3407 * on txn->flags if it encounters a tarpit rule. If <deny_status> is not NULL
3408 * and a deny/tarpit rule is matched, it will be filled with this rule's deny
3409 * status.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3410 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3411enum rule_result
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3412http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s, int *deny_status)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3413{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3414 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3415 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3416 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3417 struct act_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3418 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3419 const char *auth_realm;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3420 int act_flags = 0;
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3421 int len;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3422
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3423 /* If "the current_rule_list" match the executed rule list, we are in
3424 * resume condition. If a resume is needed it is always in the action
3425 * and never in the ACL or converters. In this case, we initialise the
3426 * current rule, and go to the action execution point.
3427 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3428 if (s->current_rule) {
3429 rule = s->current_rule;
3430 s->current_rule = NULL;
3431 if (s->current_rule_list == rules)
3432 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3433 }
3434 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3435
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3436 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3437
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3438 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3439 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3440 int ret;
3441
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3442 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]3443 ret = acl_pass(ret);
3444
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3445 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3446 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3447
3448 if (!ret) /* condition not matched */
3449 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3450 }
3451
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3452 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3453resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3454 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3455 case ACT_ACTION_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3456 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3457
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3458 case ACT_ACTION_DENY:
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3459 if (deny_status)
3460 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3461 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3462
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3463 case ACT_HTTP_REQ_TARPIT:
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3464 txn->flags |= TX_CLTARPIT;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3465 if (deny_status)
3466 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3467 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3468
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3469 case ACT_HTTP_REQ_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3470 /* Auth might be performed on regular http-req rules as well as on stats */
3471 auth_realm = rule->arg.auth.realm;
3472 if (!auth_realm) {
3473 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3474 auth_realm = STATS_DEFAULT_REALM;
3475 else
3476 auth_realm = px->id;
3477 }
3478 /* send 401/407 depending on whether we use a proxy or not. We still
3479 * count one error, because normal browsing won't significantly
3480 * increase the counter but brute force attempts will.
3481 */
3482 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3483 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3484 http_reply_and_close(s, txn->status, &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3485 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3486 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3487
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3488 case ACT_HTTP_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3489 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3490 return HTTP_RULE_RES_BADREQ;
3491 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3492
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3493 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3494 s->task->nice = rule->arg.nice;
3495 break;
3496
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3497 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3498 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3499 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]3500 break;
3501
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3502 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3503#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3504 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3505 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]3506#endif
3507 break;
3508
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3509 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3510 s->logs.level = rule->arg.loglevel;
3511 break;
3512
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3513 case ACT_HTTP_REPLACE_HDR:
3514 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3515 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
3516 rule->arg.hdr_add.name_len,
3517 &rule->arg.hdr_add.fmt,
3518 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3519 return HTTP_RULE_RES_BADREQ;
3520 break;
3521
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3522 case ACT_HTTP_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3523 ctx.idx = 0;
3524 /* remove all occurrences of the header */
3525 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3526 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3527 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3528 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3529 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3530
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3531 case ACT_HTTP_SET_HDR:
3532 case ACT_HTTP_ADD_HDR:
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3533 /* The scope of the trash buffer must be limited to this function. The
3534 * build_logline() function can execute a lot of other function which
3535 * can use the trash buffer. So for limiting the scope of this global
3536 * buffer, we build first the header value using build_logline, and
3537 * after we store the header name.
3538 */
3539 len = rule->arg.hdr_add.name_len + 2,
3540 len += build_logline(s, trash.str + len, trash.size - len, &rule->arg.hdr_add.fmt);
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3541 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3542 trash.str[rule->arg.hdr_add.name_len] = ':';
3543 trash.str[rule->arg.hdr_add.name_len + 1] = ' ';
3544 trash.len = len;
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3545
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3546 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3547 /* remove all occurrences of the header */
3548 ctx.idx = 0;
3549 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3550 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3551 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3552 }
3553 }
3554
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3555 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3556 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3557
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3558 case ACT_HTTP_DEL_ACL:
3559 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3560 struct pat_ref *ref;
3561 char *key;
3562 int len;
3563
3564 /* collect reference */
3565 ref = pat_ref_lookup(rule->arg.map.ref);
3566 if (!ref)
3567 continue;
3568
3569 /* collect key */
3570 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3571 key = trash.str;
3572 key[len] = '\0';
3573
3574 /* perform update */
3575 /* returned code: 1=ok, 0=ko */
3576 pat_ref_delete(ref, key);
3577
3578 break;
3579 }
3580
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3581 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3582 struct pat_ref *ref;
3583 char *key;
3584 struct chunk *trash_key;
3585 int len;
3586
3587 trash_key = get_trash_chunk();
3588
3589 /* collect reference */
3590 ref = pat_ref_lookup(rule->arg.map.ref);
3591 if (!ref)
3592 continue;
3593
3594 /* collect key */
3595 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3596 key = trash_key->str;
3597 key[len] = '\0';
3598
3599 /* perform update */
3600 /* add entry only if it does not already exist */
3601 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3602 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3603
3604 break;
3605 }
3606
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3607 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3608 struct pat_ref *ref;
3609 char *key, *value;
3610 struct chunk *trash_key, *trash_value;
3611 int len;
3612
3613 trash_key = get_trash_chunk();
3614 trash_value = get_trash_chunk();
3615
3616 /* collect reference */
3617 ref = pat_ref_lookup(rule->arg.map.ref);
3618 if (!ref)
3619 continue;
3620
3621 /* collect key */
3622 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3623 key = trash_key->str;
3624 key[len] = '\0';
3625
3626 /* collect value */
3627 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3628 value = trash_value->str;
3629 value[len] = '\0';
3630
3631 /* perform update */
3632 if (pat_ref_find_elt(ref, key) != NULL)
3633 /* update entry if it exists */
3634 pat_ref_set(ref, key, value, NULL);
3635 else
3636 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3637 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3638
3639 break;
3640 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3641
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3642 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3643 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3644 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3645
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3646 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3647 case ACT_RET_ERR:
3648 case ACT_RET_CONT:
3649 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3650 case ACT_RET_STOP:
3651 return HTTP_RULE_RES_DONE;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3652 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3653 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3654 return HTTP_RULE_RES_YIELD;
3655 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3656 break;
3657
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3658 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3659 /* Note: only the first valid tracking parameter of each
3660 * applies.
3661 */
3662
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3663 if (stkctr_entry(&s->stkctr[http_trk_idx(rule->action)]) == NULL) {
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3664 struct stktable *t;
3665 struct stksess *ts;
3666 struct stktable_key *key;
3667 void *ptr;
3668
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]3669 t = rule->arg.trk_ctr.table.t;
3670 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]3671
3672 if (key && (ts = stktable_get_entry(t, key))) {
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3673 stream_track_stkctr(&s->stkctr[http_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3674
3675 /* let's count a new HTTP request as it's the first time we do it */
3676 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3677 if (ptr)
3678 stktable_data_cast(ptr, http_req_cnt)++;
3679
3680 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3681 if (ptr)
3682 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3683 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3684
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3685 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3686 if (sess->fe != s->be)
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3687 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3688 }
3689 }
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3690 break;
3691
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3692 /* other flags exists, but normaly, they never be matched. */
3693 default:
3694 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3695 }
3696 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3697
3698 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3699 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3700}
3701
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3702
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3703/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
3704 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
3705 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
3706 * is returned, the process can continue the evaluation of next rule list. If
3707 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
3708 * is returned, it means the operation could not be processed and a server error
3709 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
3710 * deny rule. If *YIELD is returned, the caller must call again the function
3711 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3712 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3713static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3714http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3715{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3716 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3717 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3718 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3719 struct act_rule *rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3720 struct hdr_ctx ctx;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3721 int act_flags = 0;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3722
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3723 /* If "the current_rule_list" match the executed rule list, we are in
3724 * resume condition. If a resume is needed it is always in the action
3725 * and never in the ACL or converters. In this case, we initialise the
3726 * current rule, and go to the action execution point.
3727 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3728 if (s->current_rule) {
3729 rule = s->current_rule;
3730 s->current_rule = NULL;
3731 if (s->current_rule_list == rules)
3732 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3733 }
3734 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3735
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3736 list_for_each_entry(rule, rules, list) {
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3737
3738 /* check optional condition */
3739 if (rule->cond) {
3740 int ret;
3741
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3742 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]3743 ret = acl_pass(ret);
3744
3745 if (rule->cond->pol == ACL_COND_UNLESS)
3746 ret = !ret;
3747
3748 if (!ret) /* condition not matched */
3749 continue;
3750 }
3751
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3752 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3753resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3754 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3755 case ACT_ACTION_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3756 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3757
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3758 case ACT_ACTION_DENY:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3759 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3760 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3761
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3762 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3763 s->task->nice = rule->arg.nice;
3764 break;
3765
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3766 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3767 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3768 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]3769 break;
3770
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3771 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3772#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3773 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3774 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]3775#endif
3776 break;
3777
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3778 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3779 s->logs.level = rule->arg.loglevel;
3780 break;
3781
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3782 case ACT_HTTP_REPLACE_HDR:
3783 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3784 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3785 rule->arg.hdr_add.name_len,
3786 &rule->arg.hdr_add.fmt,
3787 &rule->arg.hdr_add.re, rule->action))
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3788 return HTTP_RULE_RES_STOP; /* note: we should report an error here */
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3789 break;
3790
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3791 case ACT_HTTP_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3792 ctx.idx = 0;
3793 /* remove all occurrences of the header */
3794 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3795 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3796 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3797 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3798 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3799
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3800 case ACT_HTTP_SET_HDR:
3801 case ACT_HTTP_ADD_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3802 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3803 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3804 trash.len = rule->arg.hdr_add.name_len;
3805 trash.str[trash.len++] = ':';
3806 trash.str[trash.len++] = ' ';
3807 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]3808
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3809 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3810 /* remove all occurrences of the header */
3811 ctx.idx = 0;
3812 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3813 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3814 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3815 }
3816 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3817 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3818 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3819
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3820 case ACT_HTTP_DEL_ACL:
3821 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3822 struct pat_ref *ref;
3823 char *key;
3824 int len;
3825
3826 /* collect reference */
3827 ref = pat_ref_lookup(rule->arg.map.ref);
3828 if (!ref)
3829 continue;
3830
3831 /* collect key */
3832 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3833 key = trash.str;
3834 key[len] = '\0';
3835
3836 /* perform update */
3837 /* returned code: 1=ok, 0=ko */
3838 pat_ref_delete(ref, key);
3839
3840 break;
3841 }
3842
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3843 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3844 struct pat_ref *ref;
3845 char *key;
3846 struct chunk *trash_key;
3847 int len;
3848
3849 trash_key = get_trash_chunk();
3850
3851 /* collect reference */
3852 ref = pat_ref_lookup(rule->arg.map.ref);
3853 if (!ref)
3854 continue;
3855
3856 /* collect key */
3857 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3858 key = trash_key->str;
3859 key[len] = '\0';
3860
3861 /* perform update */
3862 /* check if the entry already exists */
3863 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3864 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3865
3866 break;
3867 }
3868
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3869 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3870 struct pat_ref *ref;
3871 char *key, *value;
3872 struct chunk *trash_key, *trash_value;
3873 int len;
3874
3875 trash_key = get_trash_chunk();
3876 trash_value = get_trash_chunk();
3877
3878 /* collect reference */
3879 ref = pat_ref_lookup(rule->arg.map.ref);
3880 if (!ref)
3881 continue;
3882
3883 /* collect key */
3884 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3885 key = trash_key->str;
3886 key[len] = '\0';
3887
3888 /* collect value */
3889 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3890 value = trash_value->str;
3891 value[len] = '\0';
3892
3893 /* perform update */
3894 if (pat_ref_find_elt(ref, key) != NULL)
3895 /* update entry if it exists */
3896 pat_ref_set(ref, key, value, NULL);
3897 else
3898 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3899 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3900
3901 break;
3902 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3903
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3904 case ACT_HTTP_REDIR:
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3905 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3906 return HTTP_RULE_RES_BADREQ;
3907 return HTTP_RULE_RES_DONE;
3908
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3909 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
3910 /* Note: only the first valid tracking parameter of each
3911 * applies.
3912 */
3913
3914 if (stkctr_entry(&s->stkctr[http_trk_idx(rule->action)]) == NULL) {
3915 struct stktable *t;
3916 struct stksess *ts;
3917 struct stktable_key *key;
3918 void *ptr;
3919
3920 t = rule->arg.trk_ctr.table.t;
3921 key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_RES | SMP_OPT_FINAL, rule->arg.trk_ctr.expr, NULL);
3922
3923 if (key && (ts = stktable_get_entry(t, key))) {
3924 stream_track_stkctr(&s->stkctr[http_trk_idx(rule->action)], t, ts);
3925
3926 /* let's count a new HTTP request as it's the first time we do it */
3927 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3928 if (ptr)
3929 stktable_data_cast(ptr, http_req_cnt)++;
3930
3931 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3932 if (ptr)
3933 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3934 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3935
3936 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
3937 if (sess->fe != s->be)
3938 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3939
3940 /* When the client triggers a 4xx from the server, it's most often due
3941 * to a missing object or permission. These events should be tracked
3942 * because if they happen often, it may indicate a brute force or a
3943 * vulnerability scan. Normally this is done when receiving the response
3944 * but here we're tracking after this ought to have been done so we have
3945 * to do it on purpose.
3946 */
Willy Tarreau3146a4c2016-07-26 15:22:33 +0200[diff] [blame]3947 if ((unsigned)(txn->status - 400) < 100) {
3948 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_CNT);
3949 if (ptr)
3950 stktable_data_cast(ptr, http_err_cnt)++;
3951
3952 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_RATE);
3953 if (ptr)
3954 update_freq_ctr_period(&stktable_data_cast(ptr, http_err_rate),
3955 t->data_arg[STKTABLE_DT_HTTP_ERR_RATE].u, 1);
3956 }
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3957 }
3958 }
3959 break;
3960
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3961 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3962 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3963 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3964
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3965 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3966 case ACT_RET_ERR:
3967 case ACT_RET_CONT:
3968 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3969 case ACT_RET_STOP:
3970 return HTTP_RULE_RES_STOP;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3971 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3972 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3973 return HTTP_RULE_RES_YIELD;
3974 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3975 break;
3976
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3977 /* other flags exists, but normaly, they never be matched. */
3978 default:
3979 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3980 }
3981 }
3982
3983 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3984 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3985}
3986
3987
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3988/* Perform an HTTP redirect based on the information in <rule>. The function
3989 * returns non-zero on success, or zero in case of a, irrecoverable error such
3990 * as too large a request to build a valid response.
3991 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3992static 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]3993{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3994 struct http_msg *req = &txn->req;
3995 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3996 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3997 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3998
3999 /* build redirect message */
4000 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]4001 case 308:
4002 msg_fmt = HTTP_308;
4003 break;
4004 case 307:
4005 msg_fmt = HTTP_307;
4006 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4007 case 303:
4008 msg_fmt = HTTP_303;
4009 break;
4010 case 301:
4011 msg_fmt = HTTP_301;
4012 break;
4013 case 302:
4014 default:
4015 msg_fmt = HTTP_302;
4016 break;
4017 }
4018
4019 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
4020 return 0;
4021
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4022 location = trash.str + trash.len;
4023
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4024 switch(rule->type) {
4025 case REDIRECT_TYPE_SCHEME: {
4026 const char *path;
4027 const char *host;
4028 struct hdr_ctx ctx;
4029 int pathlen;
4030 int hostlen;
4031
4032 host = "";
4033 hostlen = 0;
4034 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4035 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4036 host = ctx.line + ctx.val;
4037 hostlen = ctx.vlen;
4038 }
4039
4040 path = http_get_path(txn);
4041 /* build message using path */
4042 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4043 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]4044 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4045 int qs = 0;
4046 while (qs < pathlen) {
4047 if (path[qs] == '?') {
4048 pathlen = qs;
4049 break;
4050 }
4051 qs++;
4052 }
4053 }
4054 } else {
4055 path = "/";
4056 pathlen = 1;
4057 }
4058
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4059 if (rule->rdr_str) { /* this is an old "redirect" rule */
4060 /* check if we can add scheme + "://" + host + path */
4061 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
4062 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4063
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4064 /* add scheme */
4065 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4066 trash.len += rule->rdr_len;
4067 }
4068 else {
4069 /* add scheme with executing log format */
4070 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]4071
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4072 /* check if we can add scheme + "://" + host + path */
4073 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
4074 return 0;
4075 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4076 /* add "://" */
4077 memcpy(trash.str + trash.len, "://", 3);
4078 trash.len += 3;
4079
4080 /* add host */
4081 memcpy(trash.str + trash.len, host, hostlen);
4082 trash.len += hostlen;
4083
4084 /* add path */
4085 memcpy(trash.str + trash.len, path, pathlen);
4086 trash.len += pathlen;
4087
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4088 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4089 if (trash.len && trash.str[trash.len - 1] != '/' &&
4090 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4091 if (trash.len > trash.size - 5)
4092 return 0;
4093 trash.str[trash.len] = '/';
4094 trash.len++;
4095 }
4096
4097 break;
4098 }
4099 case REDIRECT_TYPE_PREFIX: {
4100 const char *path;
4101 int pathlen;
4102
4103 path = http_get_path(txn);
4104 /* build message using path */
4105 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4106 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]4107 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4108 int qs = 0;
4109 while (qs < pathlen) {
4110 if (path[qs] == '?') {
4111 pathlen = qs;
4112 break;
4113 }
4114 qs++;
4115 }
4116 }
4117 } else {
4118 path = "/";
4119 pathlen = 1;
4120 }
4121
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4122 if (rule->rdr_str) { /* this is an old "redirect" rule */
4123 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
4124 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4125
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4126 /* add prefix. Note that if prefix == "/", we don't want to
4127 * add anything, otherwise it makes it hard for the user to
4128 * configure a self-redirection.
4129 */
4130 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
4131 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4132 trash.len += rule->rdr_len;
4133 }
4134 }
4135 else {
4136 /* add prefix with executing log format */
4137 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
4138
4139 /* Check length */
4140 if (trash.len + pathlen > trash.size - 4)
4141 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4142 }
4143
4144 /* add path */
4145 memcpy(trash.str + trash.len, path, pathlen);
4146 trash.len += pathlen;
4147
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4148 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4149 if (trash.len && trash.str[trash.len - 1] != '/' &&
4150 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4151 if (trash.len > trash.size - 5)
4152 return 0;
4153 trash.str[trash.len] = '/';
4154 trash.len++;
4155 }
4156
4157 break;
4158 }
4159 case REDIRECT_TYPE_LOCATION:
4160 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4161 if (rule->rdr_str) { /* this is an old "redirect" rule */
4162 if (trash.len + rule->rdr_len > trash.size - 4)
4163 return 0;
4164
4165 /* add location */
4166 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4167 trash.len += rule->rdr_len;
4168 }
4169 else {
4170 /* add location with executing log format */
4171 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]4172
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4173 /* Check left length */
4174 if (trash.len > trash.size - 4)
4175 return 0;
4176 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4177 break;
4178 }
4179
4180 if (rule->cookie_len) {
4181 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
4182 trash.len += 14;
4183 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
4184 trash.len += rule->cookie_len;
4185 memcpy(trash.str + trash.len, "\r\n", 2);
4186 trash.len += 2;
4187 }
4188
4189 /* add end of headers and the keep-alive/close status.
4190 * We may choose to set keep-alive if the Location begins
4191 * with a slash, because the client will come back to the
4192 * same server.
4193 */
4194 txn->status = rule->code;
4195 /* let's log the request time */
4196 s->logs.tv_request = now;
4197
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4198 if (*location == '/' &&
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4199 (req->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau2de8a502015-05-28 17:23:54 +0200[diff] [blame]4200 ((!(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]4201 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4202 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4203 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4204 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4205 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4206 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
4207 trash.len += 30;
4208 } else {
4209 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
4210 trash.len += 24;
4211 }
4212 }
4213 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
4214 trash.len += 4;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]4215 FLT_STRM_CB(s, flt_http_reply(s, txn->status, &trash));
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4216 bo_inject(res->chn, trash.str, trash.len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4217 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4218 bi_fast_delete(req->chn->buf, req->sov);
4219 req->next -= req->sov;
4220 req->sov = 0;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4221 s->req.analysers = AN_REQ_HTTP_XFER_BODY | (s->req.analysers & AN_FLT_END);
4222 s->res.analysers = AN_RES_HTTP_XFER_BODY | (s->req.analysers & AN_FLT_END);
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4223 req->msg_state = HTTP_MSG_CLOSED;
4224 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]4225 /* Trim any possible response */
4226 res->chn->buf->i = 0;
4227 res->next = res->sov = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4228 } else {
4229 /* keep-alive not possible */
4230 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4231 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4232 trash.len += 29;
4233 } else {
4234 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
4235 trash.len += 23;
4236 }
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4237 http_reply_and_close(s, txn->status, &trash);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4238 req->chn->analysers &= AN_FLT_END;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4239 }
4240
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4241 if (!(s->flags & SF_ERR_MASK))
4242 s->flags |= SF_ERR_LOCAL;
4243 if (!(s->flags & SF_FINST_MASK))
4244 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4245
4246 return 1;
4247}
4248
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4249/* This stream analyser runs all HTTP request processing which is common to
4250 * frontends and backends, which means blocking ACLs, filters, connection-close,
4251 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4252 * 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]4253 * either needs more data or wants to immediately abort the request (eg: deny,
4254 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4255 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4256int 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]4257{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4258 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4259 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4260 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4261 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4262 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4263 enum rule_result verdict;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4264 int deny_status = HTTP_ERR_403;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4265
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4266 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4267 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4268 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4269 }
4270
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4271 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]4272 now_ms, __FUNCTION__,
4273 s,
4274 req,
4275 req->rex, req->wex,
4276 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4277 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4278 req->analysers);
4279
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4280 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4281 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4282
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4283 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4284 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4285 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, &deny_status);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4286
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4287 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4288 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4289 goto return_prx_yield;
4290
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4291 case HTTP_RULE_RES_CONT:
4292 case HTTP_RULE_RES_STOP: /* nothing to do */
4293 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4294
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4295 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4296 if (txn->flags & TX_CLTARPIT)
4297 goto tarpit;
4298 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4299
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4300 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4301 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4302
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4303 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4304 goto done;
4305
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4306 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4307 goto return_bad_req;
4308 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4309 }
4310
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4311 /* OK at this stage, we know that the request was accepted according to
4312 * the http-request rules, we can check for the stats. Note that the
4313 * URI is detected *before* the req* rules in order not to be affected
4314 * by a possible reqrep, while they are processed *after* so that a
4315 * reqdeny can still block them. This clearly needs to change in 1.6!
4316 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4317 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4318 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4319 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4320 txn->status = 500;
4321 s->logs.tv_request = now;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4322 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4323
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4324 if (!(s->flags & SF_ERR_MASK))
4325 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4326 goto return_prx_cond;
4327 }
4328
4329 /* parse the whole stats request and extract the relevant information */
4330 http_handle_stats(s, req);
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4331 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, &deny_status);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4332 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4333
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4334 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4335 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4336
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4337 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4338 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4339 }
4340
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4341 /* evaluate the req* rules except reqadd */
4342 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4343 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4344 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4345
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4346 if (txn->flags & TX_CLDENY)
4347 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4348
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4349 if (txn->flags & TX_CLTARPIT)
4350 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4351 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4352
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4353 /* add request headers from the rule sets in the same order */
4354 list_for_each_entry(wl, &px->req_add, list) {
4355 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4356 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]4357 ret = acl_pass(ret);
4358 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4359 ret = !ret;
4360 if (!ret)
4361 continue;
4362 }
4363
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4364 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4365 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4366 }
4367
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4368
4369 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4370 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4371 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4372 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4373 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4374
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4375 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4376 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4377 if (!(s->flags & SF_FINST_MASK))
4378 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4379
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4380 /* 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]4381 req->analysers &= (AN_REQ_HTTP_BODY | AN_FLT_HTTP_HDRS | AN_FLT_END);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4382 req->analysers &= ~AN_FLT_XFER_DATA;
4383 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4384 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4385 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4386
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4387 /* check whether we have some ACLs set to redirect this request */
4388 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4389 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4390 int ret;
4391
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4392 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]4393 ret = acl_pass(ret);
4394 if (rule->cond->pol == ACL_COND_UNLESS)
4395 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4396 if (!ret)
4397 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4398 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4399 if (!http_apply_redirect_rule(rule, s, txn))
4400 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4401 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4402 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4403
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4404 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4405 * If this happens, then the data will not come immediately, so we must
4406 * send all what we have without waiting. Note that due to the small gain
4407 * 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]4408 * 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]4409 * itself once used.
4410 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4411 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4412
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4413 done: /* done with this analyser, continue with next ones that the calling
4414 * points will have set, if any.
4415 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4416 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4417 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4418 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4419 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4420
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4421 tarpit:
4422 /* When a connection is tarpitted, we use the tarpit timeout,
4423 * which may be the same as the connect timeout if unspecified.
4424 * If unset, then set it to zero because we really want it to
4425 * eventually expire. We build the tarpit as an analyser.
4426 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4427 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4428
4429 /* wipe the request out so that we can drop the connection early
4430 * if the client closes first.
4431 */
4432 channel_dont_connect(req);
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4433
4434 /* Allow cookie logging
4435 */
4436 if (s->be->cookie_name || sess->fe->capture_name)
4437 manage_client_side_cookies(s, req);
4438
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4439 req->analysers &= AN_FLT_END; /* remove switching rules etc... */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4440 req->analysers |= AN_REQ_HTTP_TARPIT;
4441 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4442 if (!req->analyse_exp)
4443 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4444 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4445 sess->fe->fe_counters.denied_req++;
4446 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4447 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4448 if (sess->listener->counters)
4449 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4450 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4451
4452 deny: /* this request was blocked (denied) */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4453
4454 /* Allow cookie logging
4455 */
4456 if (s->be->cookie_name || sess->fe->capture_name)
4457 manage_client_side_cookies(s, req);
4458
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4459 txn->flags |= TX_CLDENY;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4460 txn->status = http_err_codes[deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4461 s->logs.tv_request = now;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4462 http_reply_and_close(s, txn->status, http_error_message(s, deny_status));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4463 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4464 sess->fe->fe_counters.denied_req++;
4465 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4466 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4467 if (sess->listener->counters)
4468 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4469 goto return_prx_cond;
4470
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4471 return_bad_req:
4472 /* We centralize bad requests processing here */
4473 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4474 /* we detected a parsing error. We want to archive this request
4475 * in the dedicated proxy area for later troubleshooting.
4476 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4477 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]4478 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4479
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4480 txn->req.msg_state = HTTP_MSG_ERROR;
4481 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4482 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]4483
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4484 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4485 if (sess->listener->counters)
4486 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4487
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4488 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4489 if (!(s->flags & SF_ERR_MASK))
4490 s->flags |= SF_ERR_PRXCOND;
4491 if (!(s->flags & SF_FINST_MASK))
4492 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4493
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4494 req->analysers &= AN_FLT_END;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4495 req->analyse_exp = TICK_ETERNITY;
4496 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4497
4498 return_prx_yield:
4499 channel_dont_connect(req);
4500 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4501}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4502
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4503/* This function performs all the processing enabled for the current request.
4504 * It returns 1 if the processing can continue on next analysers, or zero if it
4505 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4506 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4507 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4508int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4509{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4510 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4511 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4512 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4513 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4514
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4515 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4516 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4517 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4518 return 0;
4519 }
4520
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4521 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]4522 now_ms, __FUNCTION__,
4523 s,
4524 req,
4525 req->rex, req->wex,
4526 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4527 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4528 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4529
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4530 /*
4531 * Right now, we know that we have processed the entire headers
4532 * and that unwanted requests have been filtered out. We can do
4533 * whatever we want with the remaining request. Also, now we
4534 * may have separate values for ->fe, ->be.
4535 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4536
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4537 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4538 * If HTTP PROXY is set we simply get remote server address parsing
4539 * incoming request. Note that this requires that a connection is
4540 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4541 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4542 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4543 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4544 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4545
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4546 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau973a5422015-08-05 21:47:23 +0200[diff] [blame]4547 if (unlikely((conn = si_alloc_conn(&s->si[1])) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4548 txn->req.msg_state = HTTP_MSG_ERROR;
4549 txn->status = 500;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4550 req->analysers &= AN_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4551 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4552
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4553 if (!(s->flags & SF_ERR_MASK))
4554 s->flags |= SF_ERR_RESOURCE;
4555 if (!(s->flags & SF_FINST_MASK))
4556 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4557
4558 return 0;
4559 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4560
4561 path = http_get_path(txn);
4562 url2sa(req->buf->p + msg->sl.rq.u,
4563 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4564 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4565 /* if the path was found, we have to remove everything between
4566 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4567 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4568 * u_l characters by a single "/".
4569 */
4570 if (path) {
4571 char *cur_ptr = req->buf->p;
4572 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4573 int delta;
4574
4575 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4576 http_msg_move_end(&txn->req, delta);
4577 cur_end += delta;
4578 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4579 goto return_bad_req;
4580 }
4581 else {
4582 char *cur_ptr = req->buf->p;
4583 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4584 int delta;
4585
4586 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4587 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4588 http_msg_move_end(&txn->req, delta);
4589 cur_end += delta;
4590 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4591 goto return_bad_req;
4592 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4593 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4594
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4595 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4596 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4597 * Note that doing so might move headers in the request, but
4598 * the fields will stay coherent and the URI will not move.
4599 * This should only be performed in the backend.
4600 */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4601 if (s->be->cookie_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4602 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4603
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4604 /* add unique-id if "header-unique-id" is specified */
4605
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]4606 if (!LIST_ISEMPTY(&sess->fe->format_unique_id) && !s->unique_id) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4607 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4608 goto return_bad_req;
4609 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4610 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4611 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4612
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4613 if (sess->fe->header_unique_id && s->unique_id) {
4614 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4615 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4616 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4617 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]4618 goto return_bad_req;
4619 }
4620
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4621 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4622 * 9: add X-Forwarded-For if either the frontend or the backend
4623 * asks for it.
4624 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4625 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4626 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4627 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4628 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4629 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]4630 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4631 /* The header is set to be added only if none is present
4632 * and we found it, so don't do anything.
4633 */
4634 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4635 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4636 /* Add an X-Forwarded-For header unless the source IP is
4637 * in the 'except' network range.
4638 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4639 if ((!sess->fe->except_mask.s_addr ||
4640 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4641 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4642 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4643 (((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]4644 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4645 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4646 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4647 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4648
4649 /* Note: we rely on the backend to get the header name to be used for
4650 * x-forwarded-for, because the header is really meant for the backends.
4651 * However, if the backend did not specify any option, we have to rely
4652 * on the frontend's header name.
4653 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4654 if (s->be->fwdfor_hdr_len) {
4655 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4656 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4657 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4658 len = sess->fe->fwdfor_hdr_len;
4659 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4660 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4661 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]4662
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4663 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]4664 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4665 }
4666 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4667 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4668 /* FIXME: for the sake of completeness, we should also support
4669 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4670 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4671 int len;
4672 char pn[INET6_ADDRSTRLEN];
4673 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4674 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4675 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4676
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4677 /* Note: we rely on the backend to get the header name to be used for
4678 * x-forwarded-for, because the header is really meant for the backends.
4679 * However, if the backend did not specify any option, we have to rely
4680 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4681 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4682 if (s->be->fwdfor_hdr_len) {
4683 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4684 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4685 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4686 len = sess->fe->fwdfor_hdr_len;
4687 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4688 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4689 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4690
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4691 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]4692 goto return_bad_req;
4693 }
4694 }
4695
4696 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4697 * 10: add X-Original-To if either the frontend or the backend
4698 * asks for it.
4699 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4700 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4701
4702 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4703 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4704 /* Add an X-Original-To header unless the destination IP is
4705 * in the 'except' network range.
4706 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4707 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4708
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4709 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4710 ((!sess->fe->except_mask_to.s_addr ||
4711 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4712 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4713 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4714 (((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]4715 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4716 int len;
4717 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4718 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4719
4720 /* Note: we rely on the backend to get the header name to be used for
4721 * x-original-to, because the header is really meant for the backends.
4722 * However, if the backend did not specify any option, we have to rely
4723 * on the frontend's header name.
4724 */
4725 if (s->be->orgto_hdr_len) {
4726 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4727 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4728 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4729 len = sess->fe->orgto_hdr_len;
4730 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4731 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4732 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]4733
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4734 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]4735 goto return_bad_req;
4736 }
4737 }
4738 }
4739
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4740 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4741 * If an "Upgrade" token is found, the header is left untouched in order not to have
4742 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4743 * "Upgrade" is present in the Connection header.
4744 */
4745 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4746 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4747 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4748 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4749 unsigned int want_flags = 0;
4750
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4751 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4752 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4753 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4754 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4755 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4756 want_flags |= TX_CON_CLO_SET;
4757 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4758 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4759 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4760 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4761 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4762 want_flags |= TX_CON_KAL_SET;
4763 }
4764
4765 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4766 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4767 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4768
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4769
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4770 /* If we have no server assigned yet and we're balancing on url_param
4771 * with a POST request, we may be interested in checking the body for
4772 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4773 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4774 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4775 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4776 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4777 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4778 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4779 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4780
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4781 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4782 req->analysers &= ~AN_FLT_XFER_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4783 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4784#ifdef TCP_QUICKACK
4785 /* We expect some data from the client. Unless we know for sure
4786 * we already have a full request, we have to re-enable quick-ack
4787 * in case we previously disabled it, otherwise we might cause
4788 * the client to delay further data.
4789 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4790 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4791 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4792 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4793 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4794 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4795#endif
4796 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4797
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4798 /*************************************************************
4799 * OK, that's finished for the headers. We have done what we *
4800 * could. Let's switch to the DATA state. *
4801 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4802 req->analyse_exp = TICK_ETERNITY;
4803 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4804
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4805 /* if the server closes the connection, we want to immediately react
4806 * and close the socket to save packets and syscalls.
4807 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4808 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4809 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4810
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4811 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4812 /* OK let's go on with the BODY now */
4813 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4814
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4815 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4816 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4817 /* we detected a parsing error. We want to archive this request
4818 * in the dedicated proxy area for later troubleshooting.
4819 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4820 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]4821 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4822
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4823 txn->req.msg_state = HTTP_MSG_ERROR;
4824 txn->status = 400;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4825 req->analysers &= AN_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4826 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]4827
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4828 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4829 if (sess->listener->counters)
4830 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4831
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4832 if (!(s->flags & SF_ERR_MASK))
4833 s->flags |= SF_ERR_PRXCOND;
4834 if (!(s->flags & SF_FINST_MASK))
4835 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4836 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4837}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4838
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4839/* This function is an analyser which processes the HTTP tarpit. It always
4840 * returns zero, at the beginning because it prevents any other processing
4841 * from occurring, and at the end because it terminates the request.
4842 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4843int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4844{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4845 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4846
4847 /* This connection is being tarpitted. The CLIENT side has
4848 * already set the connect expiration date to the right
4849 * timeout. We just have to check that the client is still
4850 * there and that the timeout has not expired.
4851 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4852 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4853 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4854 !tick_is_expired(req->analyse_exp, now_ms))
4855 return 0;
4856
4857 /* We will set the queue timer to the time spent, just for
4858 * logging purposes. We fake a 500 server error, so that the
4859 * attacker will not suspect his connection has been tarpitted.
4860 * It will not cause trouble to the logs because we can exclude
4861 * the tarpitted connections by filtering on the 'PT' status flags.
4862 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4863 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4864
4865 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4866 if (!(req->flags & CF_READ_ERROR))
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4867 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4868
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4869 req->analysers &= AN_FLT_END;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4870 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4871
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4872 if (!(s->flags & SF_ERR_MASK))
4873 s->flags |= SF_ERR_PRXCOND;
4874 if (!(s->flags & SF_FINST_MASK))
4875 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4876 return 0;
4877}
4878
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4879/* This function is an analyser which waits for the HTTP request body. It waits
4880 * for either the buffer to be full, or the full advertised contents to have
4881 * reached the buffer. It must only be called after the standard HTTP request
4882 * processing has occurred, because it expects the request to be parsed and will
4883 * look for the Expect header. It may send a 100-Continue interim response. It
4884 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4885 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4886 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4887 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4888int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4889{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4890 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4891 struct http_txn *txn = s->txn;
4892 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4893
4894 /* We have to parse the HTTP request body to find any required data.
4895 * "balance url_param check_post" should have been the only way to get
4896 * into this. We were brought here after HTTP header analysis, so all
4897 * related structures are ready.
4898 */
4899
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4900 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4901 /* This is the first call */
4902 if (msg->msg_state < HTTP_MSG_BODY)
4903 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4904
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4905 if (msg->msg_state < HTTP_MSG_100_SENT) {
4906 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4907 * send an HTTP/1.1 100 Continue intermediate response.
4908 */
4909 if (msg->flags & HTTP_MSGF_VER_11) {
4910 struct hdr_ctx ctx;
4911 ctx.idx = 0;
4912 /* Expect is allowed in 1.1, look for it */
4913 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4914 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4915 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4916 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4917 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4918 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4919 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4920
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4921 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4922 * req->buf->p still points to the beginning of the message. We
4923 * must save the body in msg->next because it survives buffer
4924 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4925 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4926 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4927
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4928 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4929 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4930 else
4931 msg->msg_state = HTTP_MSG_DATA;
4932 }
4933
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4934 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4935 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4936 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4937 goto missing_data;
4938
4939 /* OK we have everything we need now */
4940 goto http_end;
4941 }
4942
4943 /* OK here we're parsing a chunked-encoded message */
4944
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4945 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4946 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4947 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4948 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4949 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4950 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4951
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4952 if (!ret)
4953 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4954 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4955 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4956 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4957 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]4958 msg->next += ret;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4959 msg->msg_state = msg->chunk_len ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4960 }
4961
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4962 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4963 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4964 * for at least a whole chunk or the whole content length bytes after
4965 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4966 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4967 if (msg->msg_state == HTTP_MSG_TRAILERS)
4968 goto http_end;
4969
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4970 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4971 goto http_end;
4972
4973 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4974 /* we get here if we need to wait for more data. If the buffer is full,
4975 * we have the maximum we can expect.
4976 */
4977 if (buffer_full(req->buf, global.tune.maxrewrite))
4978 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4979
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4980 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4981 txn->status = 408;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4982 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4983
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4984 if (!(s->flags & SF_ERR_MASK))
4985 s->flags |= SF_ERR_CLITO;
4986 if (!(s->flags & SF_FINST_MASK))
4987 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4988 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4989 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4990
4991 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4992 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4993 /* Not enough data. We'll re-use the http-request
4994 * timeout here. Ideally, we should set the timeout
4995 * relative to the accept() date. We just set the
4996 * request timeout once at the beginning of the
4997 * request.
4998 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4999 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5000 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]5001 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5002 return 0;
5003 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5004
5005 http_end:
5006 /* The situation will not evolve, so let's give up on the analysis. */
5007 s->logs.tv_request = now; /* update the request timer to reflect full request */
5008 req->analysers &= ~an_bit;
5009 req->analyse_exp = TICK_ETERNITY;
5010 return 1;
5011
5012 return_bad_req: /* let's centralize all bad requests */
5013 txn->req.msg_state = HTTP_MSG_ERROR;
5014 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5015 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5016
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5017 if (!(s->flags & SF_ERR_MASK))
5018 s->flags |= SF_ERR_PRXCOND;
5019 if (!(s->flags & SF_FINST_MASK))
5020 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5021
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5022 return_err_msg:
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5023 req->analysers &= AN_FLT_END;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5024 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5025 if (sess->listener->counters)
5026 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5027 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5028}
5029
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5030/* send a server's name with an outgoing request over an established connection.
5031 * Note: this function is designed to be called once the request has been scheduled
5032 * for being forwarded. This is the reason why it rewinds the buffer before
5033 * proceeding.
5034 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]5035int 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]5036
5037 struct hdr_ctx ctx;
5038
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5039 char *hdr_name = be->server_id_hdr_name;
5040 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]5041 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5042 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5043 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5044
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]5045 ctx.idx = 0;
5046
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]5047 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5048 if (old_o) {
5049 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5050 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5051 txn->req.next += old_o;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5052 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5053 }
5054
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5055 old_i = chn->buf->i;
5056 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]5057 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5058 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5059 }
5060
5061 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5062 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5063 memcpy(hdr_val, hdr_name, hdr_name_len);
5064 hdr_val += hdr_name_len;
5065 *hdr_val++ = ':';
5066 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5067 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
5068 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]5069
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5070 if (old_o) {
5071 /* If this was a forwarded request, we must readjust the amount of
5072 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5073 * variations. Note that the current state is >= HTTP_MSG_BODY,
5074 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5075 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5076 old_o += chn->buf->i - old_i;
5077 b_adv(chn->buf, old_o);
5078 txn->req.next -= old_o;
5079 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5080 }
5081
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5082 return 0;
5083}
5084
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5085/* Terminate current transaction and prepare a new one. This is very tricky
5086 * right now but it works.
5087 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5088void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5089{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5090 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5091 struct proxy *fe = strm_fe(s);
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5092 struct proxy *be = s->be;
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5093 struct connection *srv_conn;
5094 struct server *srv;
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5095 unsigned int prev_flags = s->txn->flags;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5096
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5097 /* FIXME: We need a more portable way of releasing a backend's and a
5098 * server's connections. We need a safer way to reinitialize buffer
5099 * flags. We also need a more accurate method for computing per-request
5100 * data.
5101 */
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5102 srv_conn = objt_conn(s->si[1].end);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5103
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5104 /* unless we're doing keep-alive, we want to quickly close the connection
5105 * to the server.
5106 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5107 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5108 !si_conn_ready(&s->si[1])) {
5109 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
5110 si_shutr(&s->si[1]);
5111 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5112 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5113
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5114 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5115 be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]5116 if (unlikely(s->srv_conn))
5117 sess_change_server(s, NULL);
5118 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5119
5120 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5121 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5122
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5123 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5124 int n;
5125
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5126 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5127 if (n < 1 || n > 5)
5128 n = 0;
5129
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5130 if (fe->mode == PR_MODE_HTTP) {
5131 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5132 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5133 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5134 (be->mode == PR_MODE_HTTP)) {
5135 be->be_counters.p.http.rsp[n]++;
5136 be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5137 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5138 }
5139
5140 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5141 s->logs.bytes_in -= s->req.buf->i;
5142 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5143
5144 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5145 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5146 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5147 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5148 s->do_log(s);
5149 }
5150
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]5151 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5152 stream_stop_content_counters(s);
5153 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]5154
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5155 s->logs.accept_date = date; /* user-visible date for logging */
5156 s->logs.tv_accept = now; /* corrected date for internal use */
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200[diff] [blame]5157 s->logs.t_handshake = 0; /* There are no handshake in keep alive connection. */
5158 s->logs.t_idle = -1;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5159 tv_zero(&s->logs.tv_request);
5160 s->logs.t_queue = -1;
5161 s->logs.t_connect = -1;
5162 s->logs.t_data = -1;
5163 s->logs.t_close = 0;
5164 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
5165 s->logs.srv_queue_size = 0; /* we will get this number soon */
5166
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5167 s->logs.bytes_in = s->req.total = s->req.buf->i;
5168 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5169
5170 if (s->pend_pos)
5171 pendconn_free(s->pend_pos);
5172
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5173 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5174 if (s->flags & SF_CURR_SESS) {
5175 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5176 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5177 }
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5178 if (may_dequeue_tasks(objt_server(s->target), be))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5179 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5180 }
5181
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5182 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5183
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5184 /* only release our endpoint if we don't intend to reuse the
5185 * connection.
5186 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5187 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5188 !si_conn_ready(&s->si[1])) {
5189 si_release_endpoint(&s->si[1]);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5190 srv_conn = NULL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5191 }
5192
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5193 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5194 s->si[1].err_type = SI_ET_NONE;
5195 s->si[1].conn_retries = 0; /* used for logging too */
5196 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5197 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]5198 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);
5199 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]5200 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5201 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5202 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5203
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5204 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5205 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5206 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5207
5208 if (prev_status == 401 || prev_status == 407) {
5209 /* In HTTP keep-alive mode, if we receive a 401, we still have
5210 * a chance of being able to send the visitor again to the same
5211 * server over the same connection. This is required by some
5212 * broken protocols such as NTLM, and anyway whenever there is
5213 * an opportunity for sending the challenge to the proper place,
5214 * it's better to do it (at least it helps with debugging).
5215 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5216 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreaubd99d582015-09-02 10:40:43 +0200[diff] [blame]5217 if (srv_conn)
5218 srv_conn->flags |= CO_FL_PRIVATE;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5219 }
5220
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5221 /* Never ever allow to reuse a connection from a non-reuse backend */
5222 if (srv_conn && (be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
5223 srv_conn->flags |= CO_FL_PRIVATE;
5224
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5225 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5226 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5227
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5228 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5229 s->req.flags |= CF_NEVER_WAIT;
5230 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5231 }
5232
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5233 /* if the request buffer is not empty, it means we're
5234 * about to process another request, so send pending
5235 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5236 * Just don't do this if the buffer is close to be full,
5237 * because the request will wait for it to flush a little
5238 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5239 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5240 if (s->req.buf->i) {
5241 if (s->res.buf->o &&
5242 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5243 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5244 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5245 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5246
Willy Tarreau714ea782015-11-25 20:11:11 +0100[diff] [blame]5247 /* we're removing the analysers, we MUST re-enable events detection.
5248 * We don't enable close on the response channel since it's either
5249 * already closed, or in keep-alive with an idle connection handler.
5250 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5251 channel_auto_read(&s->req);
5252 channel_auto_close(&s->req);
5253 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5254
Willy Tarreau1c59bd52015-11-02 20:20:11 +0100[diff] [blame]5255 /* we're in keep-alive with an idle connection, monitor it if not already done */
5256 if (srv_conn && LIST_ISEMPTY(&srv_conn->list)) {
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5257 srv = objt_server(srv_conn->target);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5258 if (!srv)
5259 si_idle_conn(&s->si[1], NULL);
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5260 else if (srv_conn->flags & CO_FL_PRIVATE)
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5261 si_idle_conn(&s->si[1], &srv->priv_conns);
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5262 else if (prev_flags & TX_NOT_FIRST)
5263 /* note: we check the request, not the connection, but
5264 * this is valid for strategies SAFE and AGGR, and in
5265 * case of ALWS, we don't care anyway.
5266 */
5267 si_idle_conn(&s->si[1], &srv->safe_conns);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5268 else
5269 si_idle_conn(&s->si[1], &srv->idle_conns);
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5270 }
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5271
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5272 if (HAS_FILTERS(s)) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5273 s->req.analysers &= AN_FLT_END;
5274 s->res.analysers &= AN_FLT_END;
5275 }
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5276 else {
5277 s->req.analysers = strm_li(s) ? strm_li(s)->analysers : 0;
5278 s->res.analysers = 0;
5279 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5280}
5281
5282
5283/* This function updates the request state machine according to the response
5284 * state machine and buffer flags. It returns 1 if it changes anything (flag
5285 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5286 * it is only used to find when a request/response couple is complete. Both
5287 * this function and its equivalent should loop until both return zero. It
5288 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5289 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5290int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5291{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5292 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5293 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5294 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5295 unsigned int old_state = txn->req.msg_state;
5296
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5297 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5298 return 0;
5299
5300 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5301 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5302 * We can shut the read side unless we want to abort_on_close,
5303 * or we have a POST request. The issue with POST requests is
5304 * that some browsers still send a CRLF after the request, and
5305 * this CRLF must be read so that it does not remain in the kernel
5306 * buffers, otherwise a close could cause an RST on some systems
5307 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5308 * Note that if we're using keep-alive on the client side, we'd
5309 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5310 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5311 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5312 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5313 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5314 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5315 !(s->be->options & PR_O_ABRT_CLOSE) &&
5316 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5317 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5318
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5319 /* if the server closes the connection, we want to immediately react
5320 * and close the socket to save packets and syscalls.
5321 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5322 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5323
Willy Tarreau7f876a12015-11-18 11:59:55 +0100[diff] [blame]5324 /* In any case we've finished parsing the request so we must
5325 * disable Nagle when sending data because 1) we're not going
5326 * to shut this side, and 2) the server is waiting for us to
5327 * send pending data.
5328 */
5329 chn->flags |= CF_NEVER_WAIT;
5330
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5331 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5332 goto wait_other_side;
5333
5334 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5335 /* The server has not finished to respond, so we
5336 * don't want to move in order not to upset it.
5337 */
5338 goto wait_other_side;
5339 }
5340
5341 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5342 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5343 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5344 txn->req.msg_state = HTTP_MSG_TUNNEL;
5345 goto wait_other_side;
5346 }
5347
5348 /* When we get here, it means that both the request and the
5349 * response have finished receiving. Depending on the connection
5350 * mode, we'll have to wait for the last bytes to leave in either
5351 * direction, and sometimes for a close to be effective.
5352 */
5353
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5354 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5355 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5356 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5357 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5358 }
5359 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5360 /* Option forceclose is set, or either side wants to close,
5361 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5362 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5363 * once both states are CLOSED.
5364 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5365 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5366 channel_shutr_now(chn);
5367 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5368 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5369 }
5370 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5371 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5372 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5373 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5374 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5375 channel_auto_read(chn);
5376 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5377 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5378 }
5379
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5380 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5381 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5382 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5383
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5384 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5385 txn->req.msg_state = HTTP_MSG_CLOSING;
5386 goto http_msg_closing;
5387 }
5388 else {
5389 txn->req.msg_state = HTTP_MSG_CLOSED;
5390 goto http_msg_closed;
5391 }
5392 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5393 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5394 }
5395
5396 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5397 http_msg_closing:
5398 /* nothing else to forward, just waiting for the output buffer
5399 * to be empty and for the shutw_now to take effect.
5400 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5401 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5402 txn->req.msg_state = HTTP_MSG_CLOSED;
5403 goto http_msg_closed;
5404 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5405 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5406 txn->req.msg_state = HTTP_MSG_ERROR;
5407 goto wait_other_side;
5408 }
5409 }
5410
5411 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5412 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5413 /* see above in MSG_DONE why we only do this in these states */
5414 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5415 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5416 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5417 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5418 goto wait_other_side;
5419 }
5420
5421 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5422 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5423}
5424
5425
5426/* This function updates the response state machine according to the request
5427 * state machine and buffer flags. It returns 1 if it changes anything (flag
5428 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5429 * it is only used to find when a request/response couple is complete. Both
5430 * this function and its equivalent should loop until both return zero. It
5431 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5432 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5433int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5434{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5435 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5436 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5437 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5438 unsigned int old_state = txn->rsp.msg_state;
5439
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5440 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5441 return 0;
5442
5443 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5444 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5445 * still monitor the server connection for a possible close
5446 * while the request is being uploaded, so we don't disable
5447 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5448 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5449 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5450
5451 if (txn->req.msg_state == HTTP_MSG_ERROR)
5452 goto wait_other_side;
5453
5454 if (txn->req.msg_state < HTTP_MSG_DONE) {
5455 /* The client seems to still be sending data, probably
5456 * because we got an error response during an upload.
5457 * We have the choice of either breaking the connection
5458 * or letting it pass through. Let's do the later.
5459 */
5460 goto wait_other_side;
5461 }
5462
5463 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5464 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5465 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5466 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5467 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5468 goto wait_other_side;
5469 }
5470
5471 /* When we get here, it means that both the request and the
5472 * response have finished receiving. Depending on the connection
5473 * mode, we'll have to wait for the last bytes to leave in either
5474 * direction, and sometimes for a close to be effective.
5475 */
5476
5477 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5478 /* Server-close mode : shut read and wait for the request
5479 * side to close its output buffer. The caller will detect
5480 * when we're in DONE and the other is in CLOSED and will
5481 * catch that for the final cleanup.
5482 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5483 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5484 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5485 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5486 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5487 /* Option forceclose is set, or either side wants to close,
5488 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5489 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5490 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5491 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5492 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5493 channel_shutr_now(chn);
5494 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5495 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5496 }
5497 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5498 /* The last possible modes are keep-alive and tunnel. Tunnel will
5499 * need to forward remaining data. Keep-alive will need to monitor
5500 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5501 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5502 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5503 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5504 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5505 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5506 }
5507
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5508 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5509 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5510 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5511 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5512 goto http_msg_closing;
5513 }
5514 else {
5515 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5516 goto http_msg_closed;
5517 }
5518 }
5519 goto wait_other_side;
5520 }
5521
5522 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5523 http_msg_closing:
5524 /* nothing else to forward, just waiting for the output buffer
5525 * to be empty and for the shutw_now to take effect.
5526 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5527 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5528 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5529 goto http_msg_closed;
5530 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5531 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5532 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5533 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5534 if (objt_server(s->target))
5535 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5536 goto wait_other_side;
5537 }
5538 }
5539
5540 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5541 http_msg_closed:
5542 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5543 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5544 channel_auto_close(chn);
5545 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5546 goto wait_other_side;
5547 }
5548
5549 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5550 /* We force the response to leave immediately if we're waiting for the
5551 * other side, since there is no pending shutdown to push it out.
5552 */
5553 if (!channel_is_empty(chn))
5554 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5555 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5556}
5557
5558
5559/* Resync the request and response state machines. Return 1 if either state
5560 * changes.
5561 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5562int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5563{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5564 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5565 int old_req_state = txn->req.msg_state;
5566 int old_res_state = txn->rsp.msg_state;
5567
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5568 http_sync_req_state(s);
5569 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5570 if (!http_sync_res_state(s))
5571 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5572 if (!http_sync_req_state(s))
5573 break;
5574 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5575
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5576 /* OK, both state machines agree on a compatible state.
5577 * There are a few cases we're interested in :
5578 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5579 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5580 * directions, so let's simply disable both analysers.
5581 * - HTTP_MSG_CLOSED on the response only means we must abort the
5582 * request.
5583 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5584 * with server-close mode means we've completed one request and we
5585 * must re-initialize the server connection.
5586 */
5587
5588 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5589 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5590 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5591 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5592 s->req.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5593 channel_auto_close(&s->req);
5594 channel_auto_read(&s->req);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5595 s->res.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5596 channel_auto_close(&s->res);
5597 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5598 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5599 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5600 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5601 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5602 txn->req.msg_state == HTTP_MSG_ERROR) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5603 s->res.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5604 channel_auto_close(&s->res);
5605 channel_auto_read(&s->res);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5606 s->req.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5607 channel_abort(&s->req);
5608 channel_auto_close(&s->req);
5609 channel_auto_read(&s->req);
5610 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5611 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5612 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5613 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5614 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5615 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5616 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5617 /* server-close/keep-alive: terminate this transaction,
5618 * possibly killing the server connection and reinitialize
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5619 * a fresh-new transaction, but only once we're sure there's
5620 * enough room in the request and response buffer to process
5621 * another request. The request buffer must not hold any
5622 * pending output data and the request buffer must not have
5623 * output data occupying the reserve.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5624 */
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5625 if (s->req.buf->o)
5626 s->req.flags |= CF_WAKE_WRITE;
5627 else if (channel_congested(&s->res))
5628 s->res.flags |= CF_WAKE_WRITE;
5629 else
5630 http_end_txn_clean_session(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5631 }
5632
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5633 return txn->req.msg_state != old_req_state ||
5634 txn->rsp.msg_state != old_res_state;
5635}
5636
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5637/* This function is an analyser which forwards request body (including chunk
5638 * sizes if any). It is called as soon as we must forward, even if we forward
5639 * zero byte. The only situation where it must not be called is when we're in
5640 * tunnel mode and we want to forward till the close. It's used both to forward
5641 * remaining data and to resync after end of body. It expects the msg_state to
5642 * 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]5643 * 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]5644 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5645 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5646 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5647int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5648{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5649 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5650 struct http_txn *txn = s->txn;
5651 struct http_msg *msg = &s->txn->req;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5652 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5653
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5654 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5655 return 0;
5656
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5657 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]5658 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5659 /* Output closed while we were sending data. We must abort and
5660 * wake the other side up.
5661 */
5662 msg->msg_state = HTTP_MSG_ERROR;
5663 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5664 return 1;
5665 }
5666
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5667 /* Note that we don't have to send 100-continue back because we don't
5668 * need the data to complete our job, and it's up to the server to
5669 * decide whether to return 100, 417 or anything else in return of
5670 * an "Expect: 100-continue" header.
5671 */
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5672 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5673 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
5674 ? HTTP_MSG_CHUNK_SIZE
5675 : HTTP_MSG_DATA);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5676
5677 /* TODO/filters: when http-buffer-request option is set or if a
5678 * rule on url_param exists, the first chunk size could be
5679 * already parsed. In that case, msg->next is after the chunk
5680 * size (including the CRLF after the size). So this case should
5681 * be handled to */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5682 }
5683
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5684 /* Some post-connect processing might want us to refrain from starting to
5685 * forward data. Currently, the only reason for this is "balance url_param"
5686 * whichs need to parse/process the request after we've enabled forwarding.
5687 */
5688 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5689 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5690 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5691 req->flags |= CF_WAKE_CONNECT;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5692 goto missing_data_or_waiting;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5693 }
5694 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5695 }
5696
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5697 /* in most states, we should abort in case of early close */
5698 channel_auto_close(req);
5699
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5700 if (req->to_forward) {
5701 /* We can't process the buffer's contents yet */
5702 req->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5703 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5704 }
5705
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5706 if (msg->msg_state < HTTP_MSG_DONE) {
5707 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
5708 ? http_msg_forward_chunked_body(s, msg)
5709 : http_msg_forward_body(s, msg));
5710 if (!ret)
5711 goto missing_data_or_waiting;
5712 if (ret < 0)
5713 goto return_bad_req;
5714 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5715
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5716 /* other states, DONE...TUNNEL */
5717 /* we don't want to forward closes on DONE except in tunnel mode. */
5718 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5719 channel_dont_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5720
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5721 ret = msg->msg_state;
5722 if (http_resync_states(s)) {
5723 /* some state changes occurred, maybe the analyser
5724 * was disabled too. */
5725 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5726 if (req->flags & CF_SHUTW) {
5727 /* request errors are most likely due to the
5728 * server aborting the transfer. */
5729 goto aborted_xfer;
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5730 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5731 if (msg->err_pos >= 0)
5732 http_capture_bad_message(&sess->fe->invalid_req, s, msg, ret, s->be);
5733 goto return_bad_req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5734 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5735 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5736 }
5737
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5738 /* If "option abortonclose" is set on the backend, we want to monitor
5739 * the client's connection and forward any shutdown notification to the
5740 * server, which will decide whether to close or to go on processing the
5741 * request. We only do that in tunnel mode, and not in other modes since
5742 * it can be abused to exhaust source ports. */
5743 if (s->be->options & PR_O_ABRT_CLOSE) {
5744 channel_auto_read(req);
5745 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5746 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5747 s->si[1].flags |= SI_FL_NOLINGER;
5748 channel_auto_close(req);
5749 }
5750 else if (s->txn->meth == HTTP_METH_POST) {
5751 /* POST requests may require to read extra CRLF sent by broken
5752 * browsers and which could cause an RST to be sent upon close
5753 * on some systems (eg: Linux). */
5754 channel_auto_read(req);
5755 }
5756 return 0;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5757
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5758 missing_data_or_waiting:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5759 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5760 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5761 if (!(s->flags & SF_ERR_MASK))
5762 s->flags |= SF_ERR_CLICL;
5763 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5764 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5765 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5766 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5767 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5768 }
5769
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5770 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5771 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5772 if (objt_server(s->target))
5773 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5774
5775 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5776 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5777
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5778 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5779 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5780 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5781
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5782 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5783 * 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]5784 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5785 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5786 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5787
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5788 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5789 * 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]5790 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5791 * modes are already handled by the stream sock layer. We must not do
5792 * this in content-length mode because it could present the MSG_MORE
5793 * flag with the last block of forwarded data, which would cause an
5794 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5795 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5796 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5797 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5798
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5799 return 0;
5800
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5801 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5802 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5803 if (sess->listener->counters)
5804 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5805
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5806 return_bad_req_stats_ok:
5807 txn->req.msg_state = HTTP_MSG_ERROR;
5808 if (txn->status) {
5809 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5810 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5811 } else {
5812 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5813 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5814 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5815 req->analysers &= AN_FLT_END;
5816 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]5817
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5818 if (!(s->flags & SF_ERR_MASK))
5819 s->flags |= SF_ERR_PRXCOND;
5820 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5821 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5822 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5823 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5824 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5825 }
5826 return 0;
5827
5828 aborted_xfer:
5829 txn->req.msg_state = HTTP_MSG_ERROR;
5830 if (txn->status) {
5831 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5832 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5833 } else {
5834 txn->status = 502;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5835 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5836 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5837 req->analysers &= AN_FLT_END;
5838 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]5839
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5840 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5841 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5842 if (objt_server(s->target))
5843 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5844
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5845 if (!(s->flags & SF_ERR_MASK))
5846 s->flags |= SF_ERR_SRVCL;
5847 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5848 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5849 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5850 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5851 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5852 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5853 return 0;
5854}
5855
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5856/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5857 * processing can continue on next analysers, or zero if it either needs more
5858 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5859 * 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]5860 * when it has nothing left to do, and may remove any analyser when it wants to
5861 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5862 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5863int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5864{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5865 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5866 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5867 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5868 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5869 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5870 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5871 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5872
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5873 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]5874 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5875 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5876 rep,
5877 rep->rex, rep->wex,
5878 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5879 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5880 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5881
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5882 /*
5883 * Now parse the partial (or complete) lines.
5884 * We will check the response syntax, and also join multi-line
5885 * headers. An index of all the lines will be elaborated while
5886 * parsing.
5887 *
5888 * For the parsing, we use a 28 states FSM.
5889 *
5890 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5891 * rep->buf->p = beginning of response
5892 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5893 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5894 * msg->eol = end of current header or line (LF or CRLF)
5895 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5896 */
5897
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5898 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5899 /* There's a protected area at the end of the buffer for rewriting
5900 * purposes. We don't want to start to parse the request if the
5901 * protected area is affected, because we may have to move processed
5902 * data later, which is much more complicated.
5903 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5904 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5905 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5906 /* some data has still not left the buffer, wake us once that's done */
5907 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5908 goto abort_response;
5909 channel_dont_close(rep);
5910 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5911 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5912 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5913 }
5914
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5915 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5916 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5917 buffer_slow_realign(rep->buf);
5918
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5919 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5920 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5921 }
5922
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5923 /* 1: we might have to print this header in debug mode */
5924 if (unlikely((global.mode & MODE_DEBUG) &&
5925 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5926 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5927 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5928
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5929 sol = rep->buf->p;
5930 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5931 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5932
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5933 sol += hdr_idx_first_pos(&txn->hdr_idx);
5934 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5935
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5936 while (cur_idx) {
5937 eol = sol + txn->hdr_idx.v[cur_idx].len;
5938 debug_hdr("srvhdr", s, sol, eol);
5939 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5940 cur_idx = txn->hdr_idx.v[cur_idx].next;
5941 }
5942 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5943
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5944 /*
5945 * Now we quickly check if we have found a full valid response.
5946 * If not so, we check the FD and buffer states before leaving.
5947 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5948 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5949 * responses are checked first.
5950 *
5951 * Depending on whether the client is still there or not, we
5952 * may send an error response back or not. Note that normally
5953 * we should only check for HTTP status there, and check I/O
5954 * errors somewhere else.
5955 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5956
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5957 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5958 /* Invalid response */
5959 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5960 /* we detected a parsing error. We want to archive this response
5961 * in the dedicated proxy area for later troubleshooting.
5962 */
5963 hdr_response_bad:
5964 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5965 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]5966
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5967 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5968 if (objt_server(s->target)) {
5969 objt_server(s->target)->counters.failed_resp++;
5970 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5971 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5972 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5973 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5974 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5975 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5976 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5977 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5978 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5979
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5980 if (!(s->flags & SF_ERR_MASK))
5981 s->flags |= SF_ERR_PRXCOND;
5982 if (!(s->flags & SF_FINST_MASK))
5983 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5984
5985 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5986 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5987
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5988 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5989 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5990 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5991 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5992 goto hdr_response_bad;
5993 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5994
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5995 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5996 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5997 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5998 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]5999 else if (txn->flags & TX_NOT_FIRST)
6000 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6001
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6002 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6003 if (objt_server(s->target)) {
6004 objt_server(s->target)->counters.failed_resp++;
6005 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6006 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]6007
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6008 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6009 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6010 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6011 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6012 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6013 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]6014
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6015 if (!(s->flags & SF_ERR_MASK))
6016 s->flags |= SF_ERR_SRVCL;
6017 if (!(s->flags & SF_FINST_MASK))
6018 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]6019 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6020 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6021
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]6022 /* read timeout : return a 504 to the client. */
6023 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6024 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6025 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]6026
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6027 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6028 if (objt_server(s->target)) {
6029 objt_server(s->target)->counters.failed_resp++;
6030 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6031 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6032
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6033 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6034 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6035 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6036 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6037 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6038 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6039
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6040 if (!(s->flags & SF_ERR_MASK))
6041 s->flags |= SF_ERR_SRVTO;
6042 if (!(s->flags & SF_FINST_MASK))
6043 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6044 return 0;
6045 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]6046
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6047 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6048 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]6049 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6050 s->be->be_counters.cli_aborts++;
6051 if (objt_server(s->target))
6052 objt_server(s->target)->counters.cli_aborts++;
6053
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6054 rep->analysers &= AN_FLT_END;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6055 channel_auto_close(rep);
6056
6057 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6058 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6059 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6060
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6061 if (!(s->flags & SF_ERR_MASK))
6062 s->flags |= SF_ERR_CLICL;
6063 if (!(s->flags & SF_FINST_MASK))
6064 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6065
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6066 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6067 return 0;
6068 }
6069
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6070 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6071 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6072 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6073 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]6074 else if (txn->flags & TX_NOT_FIRST)
6075 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6076
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6077 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6078 if (objt_server(s->target)) {
6079 objt_server(s->target)->counters.failed_resp++;
6080 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6081 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6082
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6083 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6084 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6085 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6086 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6087 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6088 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6089
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6090 if (!(s->flags & SF_ERR_MASK))
6091 s->flags |= SF_ERR_SRVCL;
6092 if (!(s->flags & SF_FINST_MASK))
6093 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6094 return 0;
6095 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6096
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6097 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6098 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6099 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6100 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]6101 else if (txn->flags & TX_NOT_FIRST)
6102 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6103
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6104 s->be->be_counters.failed_resp++;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6105 rep->analysers &= AN_FLT_END;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6106 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6107
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6108 if (!(s->flags & SF_ERR_MASK))
6109 s->flags |= SF_ERR_CLICL;
6110 if (!(s->flags & SF_FINST_MASK))
6111 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6112
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6113 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6114 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6115 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6116
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6117 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]6118 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6119 return 0;
6120 }
6121
6122 /* More interesting part now : we know that we have a complete
6123 * response which at least looks like HTTP. We have an indicator
6124 * of each header's length, so we can parse them quickly.
6125 */
6126
6127 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6128 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]6129
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6130 /*
6131 * 1: get the status code
6132 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6133 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6134 if (n < 1 || n > 5)
6135 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6136 /* when the client triggers a 4xx from the server, it's most often due
6137 * to a missing object or permission. These events should be tracked
6138 * because if they happen often, it may indicate a brute force or a
6139 * vulnerability scan.
6140 */
6141 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6142 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6143
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6144 if (objt_server(s->target))
6145 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6146
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]6147 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
6148 * exactly one digit "." one digit. This check may be disabled using
6149 * option accept-invalid-http-response.
6150 */
6151 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
6152 if (msg->sl.st.v_l != 8) {
6153 msg->err_pos = 0;
6154 goto hdr_response_bad;
6155 }
6156
6157 if (rep->buf->p[4] != '/' ||
6158 !isdigit((unsigned char)rep->buf->p[5]) ||
6159 rep->buf->p[6] != '.' ||
6160 !isdigit((unsigned char)rep->buf->p[7])) {
6161 msg->err_pos = 4;
6162 goto hdr_response_bad;
6163 }
6164 }
6165
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6166 /* check if the response is HTTP/1.1 or above */
6167 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6168 ((rep->buf->p[5] > '1') ||
6169 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6170 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6171
6172 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6173 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]6174
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6175 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6176 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6177
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6178 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]6179
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6180 /* Adjust server's health based on status code. Note: status codes 501
6181 * and 505 are triggered on demand by client request, so we must not
6182 * count them as server failures.
6183 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6184 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6185 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6186 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6187 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6188 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6189 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6190
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6191 /*
6192 * 2: check for cacheability.
6193 */
6194
6195 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6196 case 100:
6197 /*
6198 * We may be facing a 100-continue response, in which case this
6199 * is not the right response, and we're waiting for the next one.
6200 * Let's allow this response to go to the client and wait for the
6201 * next one.
6202 */
6203 hdr_idx_init(&txn->hdr_idx);
6204 msg->next -= channel_forward(rep, msg->next);
6205 msg->msg_state = HTTP_MSG_RPBEFORE;
6206 txn->status = 0;
6207 s->logs.t_data = -1; /* was not a response yet */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6208 FLT_STRM_CB(s, flt_http_reset(s, msg));
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6209 goto next_one;
6210
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6211 case 200:
6212 case 203:
6213 case 206:
6214 case 300:
6215 case 301:
6216 case 410:
6217 /* RFC2616 @13.4:
6218 * "A response received with a status code of
6219 * 200, 203, 206, 300, 301 or 410 MAY be stored
6220 * by a cache (...) unless a cache-control
6221 * directive prohibits caching."
6222 *
6223 * RFC2616 @9.5: POST method :
6224 * "Responses to this method are not cacheable,
6225 * unless the response includes appropriate
6226 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6227 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6228 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6229 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6230 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6231 break;
6232 default:
6233 break;
6234 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6235
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6236 /*
6237 * 3: we may need to capture headers
6238 */
6239 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6240 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6241 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6242 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6243
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6244 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6245 * by RFC7230#3.3.3 :
6246 *
6247 * The length of a message body is determined by one of the following
6248 * (in order of precedence):
6249 *
6250 * 1. Any response to a HEAD request and any response with a 1xx
6251 * (Informational), 204 (No Content), or 304 (Not Modified) status
6252 * code is always terminated by the first empty line after the
6253 * header fields, regardless of the header fields present in the
6254 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6255 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6256 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6257 * the connection will become a tunnel immediately after the empty
6258 * line that concludes the header fields. A client MUST ignore any
6259 * Content-Length or Transfer-Encoding header fields received in
6260 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6261 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6262 * 3. If a Transfer-Encoding header field is present and the chunked
6263 * transfer coding (Section 4.1) is the final encoding, the message
6264 * body length is determined by reading and decoding the chunked
6265 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6266 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6267 * If a Transfer-Encoding header field is present in a response and
6268 * the chunked transfer coding is not the final encoding, the
6269 * message body length is determined by reading the connection until
6270 * it is closed by the server. If a Transfer-Encoding header field
6271 * is present in a request and the chunked transfer coding is not
6272 * the final encoding, the message body length cannot be determined
6273 * reliably; the server MUST respond with the 400 (Bad Request)
6274 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6275 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6276 * If a message is received with both a Transfer-Encoding and a
6277 * Content-Length header field, the Transfer-Encoding overrides the
6278 * Content-Length. Such a message might indicate an attempt to
6279 * perform request smuggling (Section 9.5) or response splitting
6280 * (Section 9.4) and ought to be handled as an error. A sender MUST
6281 * remove the received Content-Length field prior to forwarding such
6282 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6283 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6284 * 4. If a message is received without Transfer-Encoding and with
6285 * either multiple Content-Length header fields having differing
6286 * field-values or a single Content-Length header field having an
6287 * invalid value, then the message framing is invalid and the
6288 * recipient MUST treat it as an unrecoverable error. If this is a
6289 * request message, the server MUST respond with a 400 (Bad Request)
6290 * status code and then close the connection. If this is a response
6291 * message received by a proxy, the proxy MUST close the connection
6292 * to the server, discard the received response, and send a 502 (Bad
6293 * Gateway) response to the client. If this is a response message
6294 * received by a user agent, the user agent MUST close the
6295 * connection to the server and discard the received response.
6296 *
6297 * 5. If a valid Content-Length header field is present without
6298 * Transfer-Encoding, its decimal value defines the expected message
6299 * body length in octets. If the sender closes the connection or
6300 * the recipient times out before the indicated number of octets are
6301 * received, the recipient MUST consider the message to be
6302 * incomplete and close the connection.
6303 *
6304 * 6. If this is a request message and none of the above are true, then
6305 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6306 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6307 * 7. Otherwise, this is a response message without a declared message
6308 * body length, so the message body length is determined by the
6309 * number of octets received prior to the server closing the
6310 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6311 */
6312
6313 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6314 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6315 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6316 * FIXME: should we parse anyway and return an error on chunked encoding ?
6317 */
6318 if (txn->meth == HTTP_METH_HEAD ||
6319 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6320 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6321 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6322 goto skip_content_length;
6323 }
6324
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6325 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6326 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6327 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6328 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6329 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6330 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6331 /* bad transfer-encoding (chunked followed by something else) */
6332 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6333 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6334 break;
6335 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6336 }
6337
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6338 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6339 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6340 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6341 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6342 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6343 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6344 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]6345 signed long long cl;
6346
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6347 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6348 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6349 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6350 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6351
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6352 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6353 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6354 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6355 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6356
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6357 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6358 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6359 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6360 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6361
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6362 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6363 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6364 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6365 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6366
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6367 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6368 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6369 }
6370
6371skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6372 /* Now we have to check if we need to modify the Connection header.
6373 * This is more difficult on the response than it is on the request,
6374 * because we can have two different HTTP versions and we don't know
6375 * how the client will interprete a response. For instance, let's say
6376 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6377 * HTTP/1.1 response without any header. Maybe it will bound itself to
6378 * HTTP/1.0 because it only knows about it, and will consider the lack
6379 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6380 * the lack of header as a keep-alive. Thus we will use two flags
6381 * indicating how a request MAY be understood by the client. In case
6382 * of multiple possibilities, we'll fix the header to be explicit. If
6383 * ambiguous cases such as both close and keepalive are seen, then we
6384 * will fall back to explicit close. Note that we won't take risks with
6385 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6386 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6387 */
6388
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6389 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6390 txn->status == 101)) {
6391 /* Either we've established an explicit tunnel, or we're
6392 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6393 * to understand the next protocols. We have to switch to tunnel
6394 * mode, so that we transfer the request and responses then let
6395 * this protocol pass unmodified. When we later implement specific
6396 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6397 * header which contains information about that protocol for
6398 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6399 */
6400 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6401 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6402 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6403 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6404 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6405 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6406 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6407
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6408 /* this situation happens when combining pretend-keepalive with httpclose. */
6409 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6410 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6411 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6412 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6413
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6414 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6415 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6416 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6417 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6418
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6419 /* now adjust header transformations depending on current state */
6420 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6421 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6422 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6423 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6424 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6425 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6426 else { /* SCL / KAL */
6427 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6428 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6429 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6430 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6431
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6432 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6433 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6434
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6435 /* Some keep-alive responses are converted to Server-close if
6436 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6437 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6438 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6439 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6440 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6441 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6442 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6443 }
6444
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6445 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6446 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6447
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6448 /* end of job, return OK */
6449 rep->analysers &= ~an_bit;
6450 rep->analyse_exp = TICK_ETERNITY;
6451 channel_auto_close(rep);
6452 return 1;
6453
6454 abort_keep_alive:
6455 /* A keep-alive request to the server failed on a network error.
6456 * The client is required to retry. We need to close without returning
6457 * any other information so that the client retries.
6458 */
6459 txn->status = 0;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6460 rep->analysers &= AN_FLT_END;
6461 s->req.analysers &= AN_FLT_END;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6462 channel_auto_close(rep);
6463 s->logs.logwait = 0;
6464 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6465 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6466 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6467 http_reply_and_close(s, txn->status, NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6468 return 0;
6469}
6470
6471/* This function performs all the processing enabled for the current response.
6472 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6473 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6474 * other functions. It works like process_request (see indications above).
6475 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6476int 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]6477{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6478 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6479 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6480 struct http_msg *msg = &txn->rsp;
6481 struct proxy *cur_proxy;
6482 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6483 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6484
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6485 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]6486 now_ms, __FUNCTION__,
6487 s,
6488 rep,
6489 rep->rex, rep->wex,
6490 rep->flags,
6491 rep->buf->i,
6492 rep->analysers);
6493
6494 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6495 return 0;
6496
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6497 /* The stats applet needs to adjust the Connection header but we don't
6498 * apply any filter there.
6499 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6500 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6501 rep->analysers &= ~an_bit;
6502 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6503 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6504 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6505
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6506 /*
6507 * We will have to evaluate the filters.
6508 * As opposed to version 1.2, now they will be evaluated in the
6509 * filters order and not in the header order. This means that
6510 * each filter has to be validated among all headers.
6511 *
6512 * Filters are tried with ->be first, then with ->fe if it is
6513 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6514 *
6515 * Maybe we are in resume condiion. In this case I choose the
6516 * "struct proxy" which contains the rule list matching the resume
6517 * pointer. If none of theses "struct proxy" match, I initialise
6518 * the process with the first one.
6519 *
6520 * In fact, I check only correspondance betwwen the current list
6521 * pointer and the ->fe rule list. If it doesn't match, I initialize
6522 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6523 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6524 if (s->current_rule_list == &sess->fe->http_res_rules)
6525 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6526 else
6527 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6528 while (1) {
6529 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6530
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6531 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6532 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6533 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6534
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6535 if (ret == HTTP_RULE_RES_BADREQ)
6536 goto return_srv_prx_502;
6537
6538 if (ret == HTTP_RULE_RES_DONE) {
6539 rep->analysers &= ~an_bit;
6540 rep->analyse_exp = TICK_ETERNITY;
6541 return 1;
6542 }
6543 }
6544
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6545 /* we need to be called again. */
6546 if (ret == HTTP_RULE_RES_YIELD) {
6547 channel_dont_close(rep);
6548 return 0;
6549 }
6550
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6551 /* try headers filters */
6552 if (rule_set->rsp_exp != NULL) {
6553 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6554 return_bad_resp:
6555 if (objt_server(s->target)) {
6556 objt_server(s->target)->counters.failed_resp++;
6557 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6558 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6559 s->be->be_counters.failed_resp++;
6560 return_srv_prx_502:
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6561 rep->analysers &= AN_FLT_END;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6562 txn->status = 502;
6563 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6564 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6565 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6566 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6567 if (!(s->flags & SF_ERR_MASK))
6568 s->flags |= SF_ERR_PRXCOND;
6569 if (!(s->flags & SF_FINST_MASK))
6570 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6571 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6572 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6573 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6574
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6575 /* has the response been denied ? */
6576 if (txn->flags & TX_SVDENY) {
6577 if (objt_server(s->target))
6578 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6579
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6580 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6581 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6582 if (sess->listener->counters)
6583 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6584
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6585 goto return_srv_prx_502;
6586 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6587
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6588 /* add response headers from the rule sets in the same order */
6589 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6590 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6591 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6592 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6593 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]6594 ret = acl_pass(ret);
6595 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6596 ret = !ret;
6597 if (!ret)
6598 continue;
6599 }
6600 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6601 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6602 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6603
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6604 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6605 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6606 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6607 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6608 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6609
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6610 /* After this point, this anayzer can't return yield, so we can
6611 * remove the bit corresponding to this analyzer from the list.
6612 *
6613 * Note that the intermediate returns and goto found previously
6614 * reset the analyzers.
6615 */
6616 rep->analysers &= ~an_bit;
6617 rep->analyse_exp = TICK_ETERNITY;
6618
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6619 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6620 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6621 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6622
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6623 /*
6624 * Now check for a server cookie.
6625 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]6626 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]6627 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6628
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6629 /*
6630 * Check for cache-control or pragma headers if required.
6631 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6632 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]6633 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6634
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6635 /*
6636 * Add server cookie in the response if needed
6637 */
6638 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6639 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6640 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6641 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6642 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6643 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6644 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6645 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6646 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6647 /* the server is known, it's not the one the client requested, or the
6648 * cookie's last seen date needs to be refreshed. We have to
6649 * insert a set-cookie here, except if we want to insert only on POST
6650 * requests and this one isn't. Note that servers which don't have cookies
6651 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6652 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6653 if (!objt_server(s->target)->cookie) {
6654 chunk_printf(&trash,
6655 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6656 s->be->cookie_name);
6657 }
6658 else {
6659 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]6660
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6661 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6662 /* emit last_date, which is mandatory */
6663 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6664 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6665 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6666
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6667 if (s->be->cookie_maxlife) {
6668 /* emit first_date, which is either the original one or
6669 * the current date.
6670 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6671 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6672 s30tob64(txn->cookie_first_date ?
6673 txn->cookie_first_date >> 2 :
6674 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6675 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6676 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6677 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6678 chunk_appendf(&trash, "; path=/");
6679 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6680
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6681 if (s->be->cookie_domain)
6682 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6683
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6684 if (s->be->ck_opts & PR_CK_HTTPONLY)
6685 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6686
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6687 if (s->be->ck_opts & PR_CK_SECURE)
6688 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6689
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6690 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6691 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6692
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6693 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6694 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6695 /* the server did not change, only the date was updated */
6696 txn->flags |= TX_SCK_UPDATED;
6697 else
6698 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6699
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6700 /* Here, we will tell an eventual cache on the client side that we don't
6701 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6702 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6703 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6704 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6705 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6706
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6707 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6708
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6709 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6710 "Cache-control: private", 22) < 0))
6711 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6712 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6713 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6714
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6715 /*
6716 * Check if result will be cacheable with a cookie.
6717 * We'll block the response if security checks have caught
6718 * nasty things such as a cacheable cookie.
6719 */
6720 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6721 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6722 (s->be->options & PR_O_CHK_CACHE)) {
6723 /* we're in presence of a cacheable response containing
6724 * a set-cookie header. We'll block it as requested by
6725 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6726 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6727 if (objt_server(s->target))
6728 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6729
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6730 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6731 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6732 if (sess->listener->counters)
6733 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6734
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6735 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6736 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6737 send_log(s->be, LOG_ALERT,
6738 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6739 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6740 goto return_srv_prx_502;
6741 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6742
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6743 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6744 /*
6745 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6746 * If an "Upgrade" token is found, the header is left untouched in order
6747 * 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]6748 * if anything but "Upgrade" is present in the Connection header. We don't
6749 * want to touch any 101 response either since it's switching to another
6750 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6751 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6752 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6753 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6754 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6755 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6756 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6757
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6758 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6759 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6760 /* we want a keep-alive response here. Keep-alive header
6761 * required if either side is not 1.1.
6762 */
6763 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6764 want_flags |= TX_CON_KAL_SET;
6765 }
6766 else {
6767 /* we want a close response here. Close header required if
6768 * the server is 1.1, regardless of the client.
6769 */
6770 if (msg->flags & HTTP_MSGF_VER_11)
6771 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6772 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6773
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6774 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6775 http_change_connection_header(txn, msg, want_flags);
6776 }
6777
6778 skip_header_mangling:
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6779 if ((msg->flags & HTTP_MSGF_XFER_LEN) || HAS_FILTERS(s) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6780 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
6781 rep->analysers &= ~AN_FLT_XFER_DATA;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6782 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6783 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6784
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6785 /* if the user wants to log as soon as possible, without counting
6786 * bytes from the server, then this is the right moment. We have
6787 * to temporarily assign bytes_out to log what we currently have.
6788 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6789 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6790 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6791 s->logs.bytes_out = txn->rsp.eoh;
6792 s->do_log(s);
6793 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6794 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6795 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6796}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6797
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6798/* This function is an analyser which forwards response body (including chunk
6799 * sizes if any). It is called as soon as we must forward, even if we forward
6800 * zero byte. The only situation where it must not be called is when we're in
6801 * tunnel mode and we want to forward till the close. It's used both to forward
6802 * remaining data and to resync after end of body. It expects the msg_state to
6803 * 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]6804 * 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]6805 *
6806 * It is capable of compressing response data both in content-length mode and
6807 * in chunked mode. The state machines follows different flows depending on
6808 * whether content-length and chunked modes are used, since there are no
6809 * trailers in content-length :
6810 *
6811 * chk-mode cl-mode
6812 * ,----- BODY -----.
6813 * / \
6814 * V size > 0 V chk-mode
6815 * .--> SIZE -------------> DATA -------------> CRLF
6816 * | | size == 0 | last byte |
6817 * | v final crlf v inspected |
6818 * | TRAILERS -----------> DONE |
6819 * | |
6820 * `----------------------------------------------'
6821 *
6822 * Compression only happens in the DATA state, and must be flushed in final
6823 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6824 * is performed at once on final states for all bytes parsed, or when leaving
6825 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6826 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6827int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6828{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6829 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6830 struct http_txn *txn = s->txn;
6831 struct http_msg *msg = &s->txn->rsp;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6832 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6833
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6834 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6835 return 0;
6836
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6837 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]6838 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6839 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6840 /* Output closed while we were sending data. We must abort and
6841 * wake the other side up.
6842 */
6843 msg->msg_state = HTTP_MSG_ERROR;
6844 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6845 return 1;
6846 }
6847
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6848 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6849 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6850
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6851 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6852 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
6853 ? HTTP_MSG_CHUNK_SIZE
6854 : HTTP_MSG_DATA);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6855 }
6856
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6857 if (res->to_forward) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6858 /* We can't process the buffer's contents yet */
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6859 res->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6860 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6861 }
6862
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6863 if (msg->msg_state < HTTP_MSG_DONE) {
6864 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
6865 ? http_msg_forward_chunked_body(s, msg)
6866 : http_msg_forward_body(s, msg));
6867 if (!ret)
6868 goto missing_data_or_waiting;
6869 if (ret < 0)
6870 goto return_bad_res;
6871 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6872
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6873 /* other states, DONE...TUNNEL */
6874 /* for keep-alive we don't want to forward closes on DONE */
6875 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6876 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
6877 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6878
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6879 ret = msg->msg_state;
6880 if (http_resync_states(s)) {
6881 /* some state changes occurred, maybe the analyser was disabled
6882 * too. */
6883 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
6884 if (res->flags & CF_SHUTW) {
6885 /* response errors are most likely due to the
6886 * client aborting the transfer. */
6887 goto aborted_xfer;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6888 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6889 if (msg->err_pos >= 0)
6890 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, strm_fe(s));
6891 goto return_bad_res;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6892 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6893 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6894 }
Willy Tarreauf51d03c2016-05-02 15:25:15 +0200[diff] [blame]6895 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6896
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6897 missing_data_or_waiting:
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6898 if (res->flags & CF_SHUTW)
6899 goto aborted_xfer;
6900
6901 /* stop waiting for data if the input is closed before the end. If the
6902 * client side was already closed, it means that the client has aborted,
6903 * so we don't want to count this as a server abort. Otherwise it's a
6904 * server abort.
6905 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6906 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6907 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6908 goto aborted_xfer;
Christopher Fauleta46bbd82015-06-19 09:00:58 +0200[diff] [blame]6909 /* If we have some pending data, we continue the processing */
6910 if (!buffer_pending(res->buf)) {
6911 if (!(s->flags & SF_ERR_MASK))
6912 s->flags |= SF_ERR_SRVCL;
6913 s->be->be_counters.srv_aborts++;
6914 if (objt_server(s->target))
6915 objt_server(s->target)->counters.srv_aborts++;
6916 goto return_bad_res_stats_ok;
6917 }
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6918 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6919
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6920 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6921 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6922 goto return_bad_res;
6923
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6924 /* When TE: chunked is used, we need to get there again to parse
6925 * remaining chunks even if the server has closed, so we don't want to
6926 * set CF_DONTCLOSE. Similarly, if the body length is undefined, if
6927 * keep-alive is set on the client side or if there are filters
6928 * registered on the stream, we don't want to forward a close
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6929 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6930 if ((msg->flags & HTTP_MSGF_TE_CHNK) || !msg->body_len ||
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6931 HAS_FILTERS(s) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6932 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6933 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6934 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6935
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6936 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6937 * 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]6938 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6939 * modes are already handled by the stream sock layer. We must not do
6940 * this in content-length mode because it could present the MSG_MORE
6941 * flag with the last block of forwarded data, which would cause an
6942 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6943 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6944 if ((msg->flags & HTTP_MSGF_TE_CHNK) || (msg->flags & HTTP_MSGF_COMPRESSING))
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6945 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6946
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6947 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6948 return 0;
6949
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6950 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6951 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6952 if (objt_server(s->target))
6953 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6954
6955 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6956 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6957 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6958 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6959 res->analysers &= AN_FLT_END;
6960 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]6961 if (objt_server(s->target))
6962 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6963
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6964 if (!(s->flags & SF_ERR_MASK))
6965 s->flags |= SF_ERR_PRXCOND;
6966 if (!(s->flags & SF_FINST_MASK))
6967 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6968 return 0;
6969
6970 aborted_xfer:
6971 txn->rsp.msg_state = HTTP_MSG_ERROR;
6972 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6973 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6974 res->analysers &= AN_FLT_END;
6975 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]6976
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6977 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6978 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6979 if (objt_server(s->target))
6980 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6981
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6982 if (!(s->flags & SF_ERR_MASK))
6983 s->flags |= SF_ERR_CLICL;
6984 if (!(s->flags & SF_FINST_MASK))
6985 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6986 return 0;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6987}
6988
6989
6990static inline int
6991http_msg_forward_body(struct stream *s, struct http_msg *msg)
6992{
6993 struct channel *chn = msg->chn;
6994 int ret;
6995
6996 /* Here we have the guarantee to be in HTTP_MSG_DATA or HTTP_MSG_ENDING state */
6997
6998 if (msg->msg_state == HTTP_MSG_ENDING)
6999 goto ending;
7000
7001 /* Neither content-length, nor transfer-encoding was found, so we must
7002 * read the body until the server connection is closed. In that case, we
7003 * eat data as they come. Of course, this happens for response only. */
7004 if (!(msg->flags & HTTP_MSGF_XFER_LEN)) {
7005 unsigned long long len = (chn->buf->i - msg->next);
7006 msg->chunk_len += len;
7007 msg->body_len += len;
7008 }
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7009 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
7010 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
7011 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7012 msg->next += ret;
7013 msg->chunk_len -= ret;
7014 if (msg->chunk_len) {
7015 /* input empty or output full */
7016 if (chn->buf->i > msg->next)
7017 chn->flags |= CF_WAKE_WRITE;
7018 goto missing_data_or_waiting;
7019 }
7020
7021 if (!(msg->flags & HTTP_MSGF_XFER_LEN) && !(chn->flags & CF_SHUTR)) {
7022 /* The server still sending data */
7023 goto missing_data_or_waiting;
7024 }
7025 msg->msg_state = HTTP_MSG_ENDING;
7026
7027 ending:
7028 /* we may have some pending data starting at res->buf->p such as a last
7029 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7030 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
7031 /* default_ret */ msg->next,
7032 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7033 b_adv(chn->buf, ret);
7034 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7035 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
7036 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7037 if (msg->next)
7038 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7039
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7040 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
7041 /* default_ret */ 1,
7042 /* on_error */ goto error,
7043 /* on_wait */ goto waiting);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7044 msg->msg_state = HTTP_MSG_DONE;
7045 return 1;
7046
7047 missing_data_or_waiting:
7048 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7049 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
7050 /* default_ret */ msg->next,
7051 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7052 b_adv(chn->buf, ret);
7053 msg->next -= ret;
7054 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
7055 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]7056 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7057 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7058 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7059 return 0;
7060 error:
7061 return -1;
7062}
7063
7064static inline int
7065http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg)
7066{
7067 struct channel *chn = msg->chn;
7068 int ret;
7069
7070 /* Here we have the guarantee to be in one of the following state:
7071 * HTTP_MSG_DATA, HTTP_MSG_CHUNK_SIZE, HTTP_MSG_CHUNK_CRLF,
7072 * HTTP_MSG_TRAILERS or HTTP_MSG_ENDING. */
7073
7074 switch_states:
7075 switch (msg->msg_state) {
7076 case HTTP_MSG_DATA:
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7077 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
7078 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
7079 /* on_error */ goto error);
7080 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7081 msg->chunk_len -= ret;
7082 if (msg->chunk_len) {
7083 /* input empty or output full */
7084 if (chn->buf->i > msg->next)
7085 chn->flags |= CF_WAKE_WRITE;
7086 goto missing_data_or_waiting;
7087 }
7088
7089 /* nothing left to forward for this chunk*/
7090 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
7091 /* fall through for HTTP_MSG_CHUNK_CRLF */
7092
7093 case HTTP_MSG_CHUNK_CRLF:
7094 /* we want the CRLF after the data */
7095 ret = http_skip_chunk_crlf(msg);
7096 if (ret == 0)
7097 goto missing_data_or_waiting;
7098 if (ret < 0)
7099 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]7100 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7101 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
7102 /* fall through for HTTP_MSG_CHUNK_SIZE */
7103
7104 case HTTP_MSG_CHUNK_SIZE:
7105 /* read the chunk size and assign it to ->chunk_len,
7106 * then set ->next to point to the body and switch to
7107 * DATA or TRAILERS state.
7108 */
7109 ret = http_parse_chunk_size(msg);
7110 if (ret == 0)
7111 goto missing_data_or_waiting;
7112 if (ret < 0)
7113 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]7114 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7115 if (msg->chunk_len) {
7116 msg->msg_state = HTTP_MSG_DATA;
7117 goto switch_states;
7118 }
7119 msg->msg_state = HTTP_MSG_TRAILERS;
7120 /* fall through for HTTP_MSG_TRAILERS */
7121
7122 case HTTP_MSG_TRAILERS:
7123 ret = http_forward_trailers(msg);
7124 if (ret < 0)
7125 goto chunk_parsing_error;
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7126 FLT_STRM_DATA_CB(s, chn, flt_http_chunk_trailers(s, msg),
7127 /* default_ret */ 1,
7128 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7129 msg->next += msg->sol;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7130 if (!ret)
7131 goto missing_data_or_waiting;
7132 break;
7133
7134 case HTTP_MSG_ENDING:
7135 goto ending;
7136
7137 default:
7138 /* This should no happen in this function */
7139 goto error;
7140 }
7141
7142 msg->msg_state = HTTP_MSG_ENDING;
7143 ending:
7144 /* we may have some pending data starting at res->buf->p such as a last
7145 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7146 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]7147 /* default_ret */ msg->next,
7148 /* on_error */ goto error);
7149 b_adv(chn->buf, ret);
7150 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7151 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
7152 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7153 if (msg->next)
7154 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7155
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7156 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7157 /* default_ret */ 1,
7158 /* on_error */ goto error,
7159 /* on_wait */ goto waiting);
7160 msg->msg_state = HTTP_MSG_DONE;
7161 return 1;
7162
7163 missing_data_or_waiting:
7164 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7165 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]7166 /* default_ret */ msg->next,
7167 /* on_error */ goto error);
7168 b_adv(chn->buf, ret);
7169 msg->next -= ret;
7170 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
7171 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]7172 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7173 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7174 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7175 return 0;
7176
7177 chunk_parsing_error:
7178 if (msg->err_pos >= 0) {
7179 if (chn->flags & CF_ISRESP)
7180 http_capture_bad_message(&s->be->invalid_rep, s, msg,
7181 msg->msg_state, strm_fe(s));
7182 else
7183 http_capture_bad_message(&strm_fe(s)->invalid_req, s,
7184 msg, msg->msg_state, s->be);
7185 }
7186 error:
7187 return -1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7188}
7189
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7190
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7191/* Iterate the same filter through all request headers.
7192 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7193 * Since it can manage the switch to another backend, it updates the per-proxy
7194 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7195 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7196int 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]7197{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7198 char *cur_ptr, *cur_end, *cur_next;
7199 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7200 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7201 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7202 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7203
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7204 last_hdr = 0;
7205
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7206 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7207 old_idx = 0;
7208
7209 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7210 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7211 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7212 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7213 (exp->action == ACT_ALLOW ||
7214 exp->action == ACT_DENY ||
7215 exp->action == ACT_TARPIT))
7216 return 0;
7217
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7218 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7219 if (!cur_idx)
7220 break;
7221
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7222 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7223 cur_ptr = cur_next;
7224 cur_end = cur_ptr + cur_hdr->len;
7225 cur_next = cur_end + cur_hdr->cr + 1;
7226
7227 /* Now we have one header between cur_ptr and cur_end,
7228 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7229 */
7230
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7231 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]7232 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7233 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7234 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7235 last_hdr = 1;
7236 break;
7237
7238 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7239 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7240 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7241 break;
7242
7243 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7244 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7245 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7246 break;
7247
7248 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7249 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7250 if (trash.len < 0)
7251 return -1;
7252
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7253 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7254 /* FIXME: if the user adds a newline in the replacement, the
7255 * index will not be recalculated for now, and the new line
7256 * will not be counted as a new header.
7257 */
7258
7259 cur_end += delta;
7260 cur_next += delta;
7261 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7262 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7263 break;
7264
7265 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7266 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7267 cur_next += delta;
7268
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7269 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7270 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7271 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7272 cur_hdr->len = 0;
7273 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7274 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7275 break;
7276
7277 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7278 }
7279
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7280 /* keep the link from this header to next one in case of later
7281 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7282 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7283 old_idx = cur_idx;
7284 }
7285 return 0;
7286}
7287
7288
7289/* Apply the filter to the request line.
7290 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7291 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7292 * Since it can manage the switch to another backend, it updates the per-proxy
7293 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7294 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7295int 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]7296{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7297 char *cur_ptr, *cur_end;
7298 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7299 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7300 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7301
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7302 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7303 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7304 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7305 (exp->action == ACT_ALLOW ||
7306 exp->action == ACT_DENY ||
7307 exp->action == ACT_TARPIT))
7308 return 0;
7309 else if (exp->action == ACT_REMOVE)
7310 return 0;
7311
7312 done = 0;
7313
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7314 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7315 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7316
7317 /* Now we have the request line between cur_ptr and cur_end */
7318
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7319 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]7320 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7321 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7322 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7323 done = 1;
7324 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7325
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7326 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7327 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7328 done = 1;
7329 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7330
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7331 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7332 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7333 done = 1;
7334 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7335
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7336 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7337 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7338 if (trash.len < 0)
7339 return -1;
7340
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7341 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7342 /* FIXME: if the user adds a newline in the replacement, the
7343 * index will not be recalculated for now, and the new line
7344 * will not be counted as a new header.
7345 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7346
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7347 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7348 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7349 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7350 HTTP_MSG_RQMETH,
7351 cur_ptr, cur_end + 1,
7352 NULL, NULL);
7353 if (unlikely(!cur_end))
7354 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7355
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7356 /* we have a full request and we know that we have either a CR
7357 * or an LF at <ptr>.
7358 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7359 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7360 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]7361 /* there is no point trying this regex on headers */
7362 return 1;
7363 }
7364 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7365 return done;
7366}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7367
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7368
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7369
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7370/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7371 * 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]7372 * 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]7373 * unparsable request. Since it can manage the switch to another backend, it
7374 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7375 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7376int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7377{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7378 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7379 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7380 struct hdr_exp *exp;
7381
7382 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7383 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7384
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7385 /*
7386 * The interleaving of transformations and verdicts
7387 * makes it difficult to decide to continue or stop
7388 * the evaluation.
7389 */
7390
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7391 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7392 break;
7393
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7394 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7395 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7396 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7397 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7398
7399 /* if this filter had a condition, evaluate it now and skip to
7400 * next filter if the condition does not match.
7401 */
7402 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7403 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]7404 ret = acl_pass(ret);
7405 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7406 ret = !ret;
7407
7408 if (!ret)
7409 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7410 }
7411
7412 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7413 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7414 if (unlikely(ret < 0))
7415 return -1;
7416
7417 if (likely(ret == 0)) {
7418 /* The filter did not match the request, it can be
7419 * iterated through all headers.
7420 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7421 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7422 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7423 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7424 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7425 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7426}
7427
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7428
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7429/* Find the end of a cookie value contained between <s> and <e>. It works the
7430 * same way as with headers above except that the semi-colon also ends a token.
7431 * See RFC2965 for more information. Note that it requires a valid header to
7432 * return a valid result.
7433 */
7434char *find_cookie_value_end(char *s, const char *e)
7435{
7436 int quoted, qdpair;
7437
7438 quoted = qdpair = 0;
7439 for (; s < e; s++) {
7440 if (qdpair) qdpair = 0;
7441 else if (quoted) {
7442 if (*s == '\\') qdpair = 1;
7443 else if (*s == '"') quoted = 0;
7444 }
7445 else if (*s == '"') quoted = 1;
7446 else if (*s == ',' || *s == ';') return s;
7447 }
7448 return s;
7449}
7450
7451/* Delete a value in a header between delimiters <from> and <next> in buffer
7452 * <buf>. The number of characters displaced is returned, and the pointer to
7453 * the first delimiter is updated if required. The function tries as much as
7454 * possible to respect the following principles :
7455 * - replace <from> delimiter by the <next> one unless <from> points to a
7456 * colon, in which case <next> is simply removed
7457 * - set exactly one space character after the new first delimiter, unless
7458 * there are not enough characters in the block being moved to do so.
7459 * - remove unneeded spaces before the previous delimiter and after the new
7460 * one.
7461 *
7462 * It is the caller's responsibility to ensure that :
7463 * - <from> points to a valid delimiter or the colon ;
7464 * - <next> points to a valid delimiter or the final CR/LF ;
7465 * - there are non-space chars before <from> ;
7466 * - there is a CR/LF at or after <next>.
7467 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7468int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7469{
7470 char *prev = *from;
7471
7472 if (*prev == ':') {
7473 /* We're removing the first value, preserve the colon and add a
7474 * space if possible.
7475 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7476 if (!HTTP_IS_CRLF(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7477 next++;
7478 prev++;
7479 if (prev < next)
7480 *prev++ = ' ';
7481
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7482 while (HTTP_IS_SPHT(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7483 next++;
7484 } else {
7485 /* Remove useless spaces before the old delimiter. */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7486 while (HTTP_IS_SPHT(*(prev-1)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7487 prev--;
7488 *from = prev;
7489
7490 /* copy the delimiter and if possible a space if we're
7491 * not at the end of the line.
7492 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7493 if (!HTTP_IS_CRLF(*next)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7494 *prev++ = *next++;
7495 if (prev + 1 < next)
7496 *prev++ = ' ';
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7497 while (HTTP_IS_SPHT(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7498 next++;
7499 }
7500 }
7501 return buffer_replace2(buf, prev, next, NULL, 0);
7502}
7503
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7504/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7505 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7506 * desirable to call it only when needed. This code is quite complex because
7507 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7508 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7509 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7510void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7511{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7512 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7513 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7514 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7515 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7516 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7517 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7518
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7519 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7520 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7521 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7522
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7523 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7524 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7525 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7526
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7527 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7528 hdr_beg = hdr_next;
7529 hdr_end = hdr_beg + cur_hdr->len;
7530 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7531
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7532 /* We have one full header between hdr_beg and hdr_end, and the
7533 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7534 * "Cookie:" headers.
7535 */
7536
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7537 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7538 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7539 old_idx = cur_idx;
7540 continue;
7541 }
7542
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7543 del_from = NULL; /* nothing to be deleted */
7544 preserve_hdr = 0; /* assume we may kill the whole header */
7545
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7546 /* Now look for cookies. Conforming to RFC2109, we have to support
7547 * attributes whose name begin with a '$', and associate them with
7548 * the right cookie, if we want to delete this cookie.
7549 * So there are 3 cases for each cookie read :
7550 * 1) it's a special attribute, beginning with a '$' : ignore it.
7551 * 2) it's a server id cookie that we *MAY* want to delete : save
7552 * some pointers on it (last semi-colon, beginning of cookie...)
7553 * 3) it's an application cookie : we *MAY* have to delete a previous
7554 * "special" cookie.
7555 * At the end of loop, if a "special" cookie remains, we may have to
7556 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7557 * *MUST* delete it.
7558 *
7559 * Note: RFC2965 is unclear about the processing of spaces around
7560 * the equal sign in the ATTR=VALUE form. A careful inspection of
7561 * the RFC explicitly allows spaces before it, and not within the
7562 * tokens (attrs or values). An inspection of RFC2109 allows that
7563 * too but section 10.1.3 lets one think that spaces may be allowed
7564 * after the equal sign too, resulting in some (rare) buggy
7565 * implementations trying to do that. So let's do what servers do.
7566 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7567 * allowed quoted strings in values, with any possible character
7568 * after a backslash, including control chars and delimitors, which
7569 * causes parsing to become ambiguous. Browsers also allow spaces
7570 * within values even without quotes.
7571 *
7572 * We have to keep multiple pointers in order to support cookie
7573 * removal at the beginning, middle or end of header without
7574 * corrupting the header. All of these headers are valid :
7575 *
7576 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7577 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7578 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7579 * | | | | | | | | |
7580 * | | | | | | | | hdr_end <--+
7581 * | | | | | | | +--> next
7582 * | | | | | | +----> val_end
7583 * | | | | | +-----------> val_beg
7584 * | | | | +--------------> equal
7585 * | | | +----------------> att_end
7586 * | | +---------------------> att_beg
7587 * | +--------------------------> prev
7588 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7589 */
7590
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7591 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7592 /* Iterate through all cookies on this line */
7593
7594 /* find att_beg */
7595 att_beg = prev + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7596 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7597 att_beg++;
7598
7599 /* find att_end : this is the first character after the last non
7600 * space before the equal. It may be equal to hdr_end.
7601 */
7602 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7603
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7604 while (equal < hdr_end) {
7605 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7606 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7607 if (HTTP_IS_SPHT(*equal++))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7608 continue;
7609 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7610 }
7611
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7612 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7613 * is between <att_beg> and <equal>, both may be identical.
7614 */
7615
7616 /* look for end of cookie if there is an equal sign */
7617 if (equal < hdr_end && *equal == '=') {
7618 /* look for the beginning of the value */
7619 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7620 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7621 val_beg++;
7622
7623 /* find the end of the value, respecting quotes */
7624 next = find_cookie_value_end(val_beg, hdr_end);
7625
7626 /* make val_end point to the first white space or delimitor after the value */
7627 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7628 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7629 val_end--;
7630 } else {
7631 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7632 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7633
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7634 /* We have nothing to do with attributes beginning with '$'. However,
7635 * they will automatically be removed if a header before them is removed,
7636 * since they're supposed to be linked together.
7637 */
7638 if (*att_beg == '$')
7639 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7640
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7641 /* Ignore cookies with no equal sign */
7642 if (equal == next) {
7643 /* This is not our cookie, so we must preserve it. But if we already
7644 * scheduled another cookie for removal, we cannot remove the
7645 * complete header, but we can remove the previous block itself.
7646 */
7647 preserve_hdr = 1;
7648 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7649 int delta = del_hdr_value(req->buf, &del_from, prev);
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);
7656 prev = del_from;
7657 del_from = NULL;
7658 }
7659 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7660 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7661
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7662 /* if there are spaces around the equal sign, we need to
7663 * strip them otherwise we'll get trouble for cookie captures,
7664 * or even for rewrites. Since this happens extremely rarely,
7665 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7666 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7667 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7668 int stripped_before = 0;
7669 int stripped_after = 0;
7670
7671 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7672 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7673 equal += stripped_before;
7674 val_beg += stripped_before;
7675 }
7676
7677 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7678 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7679 val_beg += stripped_after;
7680 stripped_before += stripped_after;
7681 }
7682
7683 val_end += stripped_before;
7684 next += stripped_before;
7685 hdr_end += stripped_before;
7686 hdr_next += stripped_before;
7687 cur_hdr->len += stripped_before;
7688 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7689 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7690 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7691
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7692 /* First, let's see if we want to capture this cookie. We check
7693 * that we don't already have a client side cookie, because we
7694 * can only capture one. Also as an optimisation, we ignore
7695 * cookies shorter than the declared name.
7696 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7697 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7698 (val_end - att_beg >= sess->fe->capture_namelen) &&
7699 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7700 int log_len = val_end - att_beg;
7701
7702 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7703 Alert("HTTP logging : out of memory.\n");
7704 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7705 if (log_len > sess->fe->capture_len)
7706 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7707 memcpy(txn->cli_cookie, att_beg, log_len);
7708 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7709 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7710 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7711
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7712 /* Persistence cookies in passive, rewrite or insert mode have the
7713 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7714 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7715 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7716 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7717 * For cookies in prefix mode, the form is :
7718 *
7719 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7720 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7721 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7722 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7723 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7724 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7725
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7726 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7727 * have the server ID between val_beg and delim, and the original cookie between
7728 * delim+1 and val_end. Otherwise, delim==val_end :
7729 *
7730 * Cookie: NAME=SRV; # in all but prefix modes
7731 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7732 * | || || | |+-> next
7733 * | || || | +--> val_end
7734 * | || || +---------> delim
7735 * | || |+------------> val_beg
7736 * | || +-------------> att_end = equal
7737 * | |+-----------------> att_beg
7738 * | +------------------> prev
7739 * +-------------------------> hdr_beg
7740 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7741
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7742 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7743 for (delim = val_beg; delim < val_end; delim++)
7744 if (*delim == COOKIE_DELIM)
7745 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7746 } else {
7747 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7748 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7749 /* Now check if the cookie contains a date field, which would
7750 * appear after a vertical bar ('|') just after the server name
7751 * and before the delimiter.
7752 */
7753 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7754 if (vbar1) {
7755 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7756 * right is the last seen date. It is a base64 encoded
7757 * 30-bit value representing the UNIX date since the
7758 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7759 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7760 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7761 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7762 if (val_end - vbar1 >= 5) {
7763 val = b64tos30(vbar1);
7764 if (val > 0)
7765 txn->cookie_last_date = val << 2;
7766 }
7767 /* look for a second vertical bar */
7768 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7769 if (vbar1 && (val_end - vbar1 > 5)) {
7770 val = b64tos30(vbar1 + 1);
7771 if (val > 0)
7772 txn->cookie_first_date = val << 2;
7773 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7774 }
7775 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7776
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7777 /* if the cookie has an expiration date and the proxy wants to check
7778 * it, then we do that now. We first check if the cookie is too old,
7779 * then only if it has expired. We detect strict overflow because the
7780 * time resolution here is not great (4 seconds). Cookies with dates
7781 * in the future are ignored if their offset is beyond one day. This
7782 * allows an admin to fix timezone issues without expiring everyone
7783 * and at the same time avoids keeping unwanted side effects for too
7784 * long.
7785 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7786 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7787 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7788 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7789 txn->flags &= ~TX_CK_MASK;
7790 txn->flags |= TX_CK_OLD;
7791 delim = val_beg; // let's pretend we have not found the cookie
7792 txn->cookie_first_date = 0;
7793 txn->cookie_last_date = 0;
7794 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7795 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7796 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7797 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7798 txn->flags &= ~TX_CK_MASK;
7799 txn->flags |= TX_CK_EXPIRED;
7800 delim = val_beg; // let's pretend we have not found the cookie
7801 txn->cookie_first_date = 0;
7802 txn->cookie_last_date = 0;
7803 }
7804
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7805 /* Here, we'll look for the first running server which supports the cookie.
7806 * This allows to share a same cookie between several servers, for example
7807 * to dedicate backup servers to specific servers only.
7808 * However, to prevent clients from sticking to cookie-less backup server
7809 * when they have incidentely learned an empty cookie, we simply ignore
7810 * empty cookies and mark them as invalid.
7811 * The same behaviour is applied when persistence must be ignored.
7812 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7813 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7814 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7815
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7816 while (srv) {
7817 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7818 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7819 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7820 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7821 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7822 /* we found the server and we can use it */
7823 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7824 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7825 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7826 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7827 break;
7828 } else {
7829 /* we found a server, but it's down,
7830 * mark it as such and go on in case
7831 * another one is available.
7832 */
7833 txn->flags &= ~TX_CK_MASK;
7834 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7835 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7836 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7837 srv = srv->next;
7838 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7839
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7840 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7841 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7842 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7843 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7844 txn->flags |= TX_CK_UNUSED;
7845 else
7846 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7847 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7848
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7849 /* depending on the cookie mode, we may have to either :
7850 * - delete the complete cookie if we're in insert+indirect mode, so that
7851 * the server never sees it ;
7852 * - remove the server id from the cookie value, and tag the cookie as an
7853 * application cookie so that it does not get accidentely removed later,
7854 * if we're in cookie prefix mode
7855 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7856 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7857 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7858
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7859 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7860 val_end += delta;
7861 next += delta;
7862 hdr_end += delta;
7863 hdr_next += delta;
7864 cur_hdr->len += delta;
7865 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7866
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7867 del_from = NULL;
7868 preserve_hdr = 1; /* we want to keep this cookie */
7869 }
7870 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7871 (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]7872 del_from = prev;
7873 }
7874 } else {
7875 /* This is not our cookie, so we must preserve it. But if we already
7876 * scheduled another cookie for removal, we cannot remove the
7877 * complete header, but we can remove the previous block itself.
7878 */
7879 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7880
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7881 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7882 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7883 if (att_beg >= del_from)
7884 att_beg += delta;
7885 if (att_end >= del_from)
7886 att_end += delta;
7887 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7888 val_end += delta;
7889 next += delta;
7890 hdr_end += delta;
7891 hdr_next += delta;
7892 cur_hdr->len += delta;
7893 http_msg_move_end(&txn->req, delta);
7894 prev = del_from;
7895 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7896 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7897 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7898
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7899 /* continue with next cookie on this header line */
7900 att_beg = next;
7901 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7902
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7903 /* There are no more cookies on this line.
7904 * We may still have one (or several) marked for deletion at the
7905 * end of the line. We must do this now in two ways :
7906 * - if some cookies must be preserved, we only delete from the
7907 * mark to the end of line ;
7908 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7909 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7910 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7911 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7912 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7913 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7914 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7915 cur_hdr->len += delta;
7916 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7917 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7918
7919 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7920 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7921 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7922 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7923 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7924 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7925 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7926 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7927 }
7928
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7929 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7930 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7931 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7932}
7933
7934
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7935/* Iterate the same filter through all response headers contained in <rtr>.
7936 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7937 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7938int 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]7939{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7940 char *cur_ptr, *cur_end, *cur_next;
7941 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7942 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7943 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7944 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7945
7946 last_hdr = 0;
7947
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7948 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7949 old_idx = 0;
7950
7951 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7952 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7953 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7954 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7955 (exp->action == ACT_ALLOW ||
7956 exp->action == ACT_DENY))
7957 return 0;
7958
7959 cur_idx = txn->hdr_idx.v[old_idx].next;
7960 if (!cur_idx)
7961 break;
7962
7963 cur_hdr = &txn->hdr_idx.v[cur_idx];
7964 cur_ptr = cur_next;
7965 cur_end = cur_ptr + cur_hdr->len;
7966 cur_next = cur_end + cur_hdr->cr + 1;
7967
7968 /* Now we have one header between cur_ptr and cur_end,
7969 * and the next header starts at cur_next.
7970 */
7971
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7972 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]7973 switch (exp->action) {
7974 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7975 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7976 last_hdr = 1;
7977 break;
7978
7979 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7980 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7981 last_hdr = 1;
7982 break;
7983
7984 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7985 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7986 if (trash.len < 0)
7987 return -1;
7988
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7989 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7990 /* FIXME: if the user adds a newline in the replacement, the
7991 * index will not be recalculated for now, and the new line
7992 * will not be counted as a new header.
7993 */
7994
7995 cur_end += delta;
7996 cur_next += delta;
7997 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7998 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7999 break;
8000
8001 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8002 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8003 cur_next += delta;
8004
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8005 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8006 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8007 txn->hdr_idx.used--;
8008 cur_hdr->len = 0;
8009 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8010 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8011 break;
8012
8013 }
8014 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8015
8016 /* keep the link from this header to next one in case of later
8017 * removal of next header.
8018 */
8019 old_idx = cur_idx;
8020 }
8021 return 0;
8022}
8023
8024
8025/* Apply the filter to the status line in the response buffer <rtr>.
8026 * Returns 0 if nothing has been done, 1 if the filter has been applied,
8027 * or -1 if a replacement resulted in an invalid status line.
8028 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8029int 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]8030{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8031 char *cur_ptr, *cur_end;
8032 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8033 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8034 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8035
8036
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8037 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8038 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8039 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8040 (exp->action == ACT_ALLOW ||
8041 exp->action == ACT_DENY))
8042 return 0;
8043 else if (exp->action == ACT_REMOVE)
8044 return 0;
8045
8046 done = 0;
8047
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8048 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]8049 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8050
8051 /* Now we have the status line between cur_ptr and cur_end */
8052
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8053 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]8054 switch (exp->action) {
8055 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8056 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8057 done = 1;
8058 break;
8059
8060 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8061 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8062 done = 1;
8063 break;
8064
8065 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8066 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8067 if (trash.len < 0)
8068 return -1;
8069
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8070 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8071 /* FIXME: if the user adds a newline in the replacement, the
8072 * index will not be recalculated for now, and the new line
8073 * will not be counted as a new header.
8074 */
8075
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8076 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8077 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8078 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]8079 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8080 cur_ptr, cur_end + 1,
8081 NULL, NULL);
8082 if (unlikely(!cur_end))
8083 return -1;
8084
8085 /* we have a full respnse and we know that we have either a CR
8086 * or an LF at <ptr>.
8087 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8088 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]8089 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]8090 /* there is no point trying this regex on headers */
8091 return 1;
8092 }
8093 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8094 return done;
8095}
8096
8097
8098
8099/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8100 * 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]8101 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
8102 * unparsable response.
8103 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8104int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8105{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8106 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8107 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8108 struct hdr_exp *exp;
8109
8110 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8111 int ret;
8112
8113 /*
8114 * The interleaving of transformations and verdicts
8115 * makes it difficult to decide to continue or stop
8116 * the evaluation.
8117 */
8118
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8119 if (txn->flags & TX_SVDENY)
8120 break;
8121
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8122 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8123 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
8124 exp->action == ACT_PASS)) {
8125 exp = exp->next;
8126 continue;
8127 }
8128
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8129 /* if this filter had a condition, evaluate it now and skip to
8130 * next filter if the condition does not match.
8131 */
8132 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8133 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]8134 ret = acl_pass(ret);
8135 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
8136 ret = !ret;
8137 if (!ret)
8138 continue;
8139 }
8140
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8141 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8142 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8143 if (unlikely(ret < 0))
8144 return -1;
8145
8146 if (likely(ret == 0)) {
8147 /* The filter did not match the response, it can be
8148 * iterated through all headers.
8149 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8150 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
8151 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8152 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8153 }
8154 return 0;
8155}
8156
8157
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8158/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]8159 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8160 * desirable to call it only when needed. This function is also used when we
8161 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8162 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8163void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8164{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8165 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8166 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8167 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8168 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8169 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8170 char *hdr_beg, *hdr_end, *hdr_next;
8171 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8172
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8173 /* Iterate through the headers.
8174 * we start with the start line.
8175 */
8176 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8177 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8178
8179 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8180 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8181 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8182
8183 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8184 hdr_beg = hdr_next;
8185 hdr_end = hdr_beg + cur_hdr->len;
8186 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8187
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8188 /* We have one full header between hdr_beg and hdr_end, and the
8189 * next header starts at hdr_next. We're only interested in
8190 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8191 */
8192
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8193 is_cookie2 = 0;
8194 prev = hdr_beg + 10;
8195 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8196 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8197 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8198 if (!val) {
8199 old_idx = cur_idx;
8200 continue;
8201 }
8202 is_cookie2 = 1;
8203 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8204 }
8205
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8206 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8207 * <prev> points to the colon.
8208 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8209 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8210
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8211 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8212 * check-cache is enabled) and we are not interested in checking
8213 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8214 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]8215 if (s->be->cookie_name == NULL && sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8216 return;
8217
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8218 /* OK so now we know we have to process this response cookie.
8219 * The format of the Set-Cookie header is slightly different
8220 * from the format of the Cookie header in that it does not
8221 * support the comma as a cookie delimiter (thus the header
8222 * cannot be folded) because the Expires attribute described in
8223 * the original Netscape's spec may contain an unquoted date
8224 * with a comma inside. We have to live with this because
8225 * many browsers don't support Max-Age and some browsers don't
8226 * support quoted strings. However the Set-Cookie2 header is
8227 * clean.
8228 *
8229 * We have to keep multiple pointers in order to support cookie
8230 * removal at the beginning, middle or end of header without
8231 * corrupting the header (in case of set-cookie2). A special
8232 * pointer, <scav> points to the beginning of the set-cookie-av
8233 * fields after the first semi-colon. The <next> pointer points
8234 * either to the end of line (set-cookie) or next unquoted comma
8235 * (set-cookie2). All of these headers are valid :
8236 *
8237 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8238 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8239 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8240 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8241 * | | | | | | | | | |
8242 * | | | | | | | | +-> next hdr_end <--+
8243 * | | | | | | | +------------> scav
8244 * | | | | | | +--------------> val_end
8245 * | | | | | +--------------------> val_beg
8246 * | | | | +----------------------> equal
8247 * | | | +------------------------> att_end
8248 * | | +----------------------------> att_beg
8249 * | +------------------------------> prev
8250 * +-----------------------------------------> hdr_beg
8251 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8252
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8253 for (; prev < hdr_end; prev = next) {
8254 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8255
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8256 /* find att_beg */
8257 att_beg = prev + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8258 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8259 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8260
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8261 /* find att_end : this is the first character after the last non
8262 * space before the equal. It may be equal to hdr_end.
8263 */
8264 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8265
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8266 while (equal < hdr_end) {
8267 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8268 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8269 if (HTTP_IS_SPHT(*equal++))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8270 continue;
8271 att_end = equal;
8272 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8273
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8274 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8275 * is between <att_beg> and <equal>, both may be identical.
8276 */
8277
8278 /* look for end of cookie if there is an equal sign */
8279 if (equal < hdr_end && *equal == '=') {
8280 /* look for the beginning of the value */
8281 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8282 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8283 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8284
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8285 /* find the end of the value, respecting quotes */
8286 next = find_cookie_value_end(val_beg, hdr_end);
8287
8288 /* make val_end point to the first white space or delimitor after the value */
8289 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8290 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8291 val_end--;
8292 } else {
8293 /* <equal> points to next comma, semi-colon or EOL */
8294 val_beg = val_end = next = equal;
8295 }
8296
8297 if (next < hdr_end) {
8298 /* Set-Cookie2 supports multiple cookies, and <next> points to
8299 * a colon or semi-colon before the end. So skip all attr-value
8300 * pairs and look for the next comma. For Set-Cookie, since
8301 * commas are permitted in values, skip to the end.
8302 */
8303 if (is_cookie2)
8304 next = find_hdr_value_end(next, hdr_end);
8305 else
8306 next = hdr_end;
8307 }
8308
8309 /* Now everything is as on the diagram above */
8310
8311 /* Ignore cookies with no equal sign */
8312 if (equal == val_end)
8313 continue;
8314
8315 /* If there are spaces around the equal sign, we need to
8316 * strip them otherwise we'll get trouble for cookie captures,
8317 * or even for rewrites. Since this happens extremely rarely,
8318 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8319 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8320 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8321 int stripped_before = 0;
8322 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8323
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8324 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8325 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8326 equal += stripped_before;
8327 val_beg += stripped_before;
8328 }
8329
8330 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8331 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8332 val_beg += stripped_after;
8333 stripped_before += stripped_after;
8334 }
8335
8336 val_end += stripped_before;
8337 next += stripped_before;
8338 hdr_end += stripped_before;
8339 hdr_next += stripped_before;
8340 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8341 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8342 }
8343
8344 /* First, let's see if we want to capture this cookie. We check
8345 * that we don't already have a server side cookie, because we
8346 * can only capture one. Also as an optimisation, we ignore
8347 * cookies shorter than the declared name.
8348 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8349 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8350 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8351 (val_end - att_beg >= sess->fe->capture_namelen) &&
8352 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8353 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8354 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8355 Alert("HTTP logging : out of memory.\n");
8356 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8357 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8358 if (log_len > sess->fe->capture_len)
8359 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8360 memcpy(txn->srv_cookie, att_beg, log_len);
8361 txn->srv_cookie[log_len] = 0;
8362 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8363 }
8364
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8365 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8366 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8367 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8368 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8369 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8370 /* assume passive cookie by default */
8371 txn->flags &= ~TX_SCK_MASK;
8372 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8373
8374 /* If the cookie is in insert mode on a known server, we'll delete
8375 * this occurrence because we'll insert another one later.
8376 * 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]8377 * a direct access.
8378 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8379 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8380 /* The "preserve" flag was set, we don't want to touch the
8381 * server's cookie.
8382 */
8383 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8384 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8385 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8386 /* this cookie must be deleted */
8387 if (*prev == ':' && next == hdr_end) {
8388 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8389 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8390 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8391 txn->hdr_idx.used--;
8392 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8393 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8394 hdr_next += delta;
8395 http_msg_move_end(&txn->rsp, delta);
8396 /* note: while both invalid now, <next> and <hdr_end>
8397 * are still equal, so the for() will stop as expected.
8398 */
8399 } else {
8400 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8401 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8402 next = prev;
8403 hdr_end += delta;
8404 hdr_next += delta;
8405 cur_hdr->len += delta;
8406 http_msg_move_end(&txn->rsp, delta);
8407 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8408 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8409 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8410 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8411 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8412 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8413 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8414 * with this server since we know it.
8415 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8416 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8417 next += delta;
8418 hdr_end += delta;
8419 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8420 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8421 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8422
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8423 txn->flags &= ~TX_SCK_MASK;
8424 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8425 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8426 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8427 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8428 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8429 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8430 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8431 next += delta;
8432 hdr_end += delta;
8433 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8434 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8435 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8436
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8437 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8438 txn->flags &= ~TX_SCK_MASK;
8439 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8440 }
8441 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8442 /* that's done for this cookie, check the next one on the same
8443 * line when next != hdr_end (only if is_cookie2).
8444 */
8445 }
8446 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8447 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8448 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8449}
8450
8451
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8452/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8453 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8454 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8455void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8456{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8457 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8458 char *p1, *p2;
8459
8460 char *cur_ptr, *cur_end, *cur_next;
8461 int cur_idx;
8462
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8463 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8464 return;
8465
8466 /* Iterate through the headers.
8467 * we start with the start line.
8468 */
8469 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8470 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8471
8472 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8473 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8474 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8475
8476 cur_hdr = &txn->hdr_idx.v[cur_idx];
8477 cur_ptr = cur_next;
8478 cur_end = cur_ptr + cur_hdr->len;
8479 cur_next = cur_end + cur_hdr->cr + 1;
8480
8481 /* We have one full header between cur_ptr and cur_end, and the
8482 * next header starts at cur_next. We're only interested in
8483 * "Cookie:" headers.
8484 */
8485
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8486 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8487 if (val) {
8488 if ((cur_end - (cur_ptr + val) >= 8) &&
8489 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8490 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8491 return;
8492 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8493 }
8494
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8495 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8496 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8497 continue;
8498
8499 /* OK, right now we know we have a cache-control header at cur_ptr */
8500
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8501 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8502
8503 if (p1 >= cur_end) /* no more info */
8504 continue;
8505
8506 /* p1 is at the beginning of the value */
8507 p2 = p1;
8508
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8509 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8510 p2++;
8511
8512 /* we have a complete value between p1 and p2 */
8513 if (p2 < cur_end && *p2 == '=') {
8514 /* we have something of the form no-cache="set-cookie" */
8515 if ((cur_end - p1 >= 21) &&
8516 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8517 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8518 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8519 continue;
8520 }
8521
8522 /* OK, so we know that either p2 points to the end of string or to a comma */
8523 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8524 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8525 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8526 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8527 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8528 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8529 return;
8530 }
8531
8532 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8533 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8534 continue;
8535 }
8536 }
8537}
8538
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8539
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8540/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8541 * 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]8542 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8543 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8544 * 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]8545 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8546 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8547 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8548 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8549int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8550{
8551 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8552 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8553 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8554
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8555 if (!uri_auth)
8556 return 0;
8557
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8558 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]8559 return 0;
8560
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8561 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8562 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8563 return 0;
8564
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8565 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8566 return 0;
8567
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8568 return 1;
8569}
8570
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8571/*
8572 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8573 * By default it tries to report the error position as msg->err_pos. However if
8574 * this one is not set, it will then report msg->next, which is the last known
8575 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8576 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8577 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8578void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8579 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8580 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8581{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8582 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8583 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8584 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8585
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8586 es->len = MIN(chn->buf->i, global.tune.bufsize);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8587 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8588 len1 = MIN(len1, es->len);
8589 len2 = es->len - len1; /* remaining data if buffer wraps */
8590
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8591 if (!es->buf)
8592 es->buf = malloc(global.tune.bufsize);
8593
8594 if (es->buf) {
8595 memcpy(es->buf, chn->buf->p, len1);
8596 if (len2)
8597 memcpy(es->buf + len1, chn->buf->data, len2);
8598 }
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8599
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8600 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8601 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8602 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8603 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8604
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8605 es->when = date; // user-visible date
8606 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8607 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8608 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8609 if (objt_conn(sess->origin))
8610 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8611 else
8612 memset(&es->src, 0, sizeof(es->src));
8613
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8614 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8615 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8616 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8617 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8618 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8619 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8620 es->b_out = chn->buf->o;
8621 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8622 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8623 es->m_clen = msg->chunk_len;
8624 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8625}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8626
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8627/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8628 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8629 * performed over the whole headers. Otherwise it must contain a valid header
8630 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8631 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8632 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8633 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8634 * -1. The value fetch stops at commas, so this function is suited for use with
8635 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8636 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8637 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8638unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8639 struct hdr_idx *idx, int occ,
8640 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8641{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8642 struct hdr_ctx local_ctx;
8643 char *ptr_hist[MAX_HDR_HISTORY];
8644 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8645 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8646 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8647
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8648 if (!ctx) {
8649 local_ctx.idx = 0;
8650 ctx = &local_ctx;
8651 }
8652
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8653 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8654 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8655 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8656 occ--;
8657 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8658 *vptr = ctx->line + ctx->val;
8659 *vlen = ctx->vlen;
8660 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8661 }
8662 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8663 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8664 }
8665
8666 /* negative occurrence, we scan all the list then walk back */
8667 if (-occ > MAX_HDR_HISTORY)
8668 return 0;
8669
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8670 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8671 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8672 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8673 len_hist[hist_ptr] = ctx->vlen;
8674 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8675 hist_ptr = 0;
8676 found++;
8677 }
8678 if (-occ > found)
8679 return 0;
8680 /* 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]8681 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8682 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8683 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8684 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8685 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8686 if (hist_ptr >= MAX_HDR_HISTORY)
8687 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8688 *vptr = ptr_hist[hist_ptr];
8689 *vlen = len_hist[hist_ptr];
8690 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8691}
8692
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8693/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8694 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8695 * performed over the whole headers. Otherwise it must contain a valid header
8696 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8697 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8698 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8699 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8700 * -1. This function differs from http_get_hdr() in that it only returns full
8701 * line header values and does not stop at commas.
8702 * The return value is 0 if nothing was found, or non-zero otherwise.
8703 */
8704unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8705 struct hdr_idx *idx, int occ,
8706 struct hdr_ctx *ctx, char **vptr, int *vlen)
8707{
8708 struct hdr_ctx local_ctx;
8709 char *ptr_hist[MAX_HDR_HISTORY];
8710 int len_hist[MAX_HDR_HISTORY];
8711 unsigned int hist_ptr;
8712 int found;
8713
8714 if (!ctx) {
8715 local_ctx.idx = 0;
8716 ctx = &local_ctx;
8717 }
8718
8719 if (occ >= 0) {
8720 /* search from the beginning */
8721 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8722 occ--;
8723 if (occ <= 0) {
8724 *vptr = ctx->line + ctx->val;
8725 *vlen = ctx->vlen;
8726 return 1;
8727 }
8728 }
8729 return 0;
8730 }
8731
8732 /* negative occurrence, we scan all the list then walk back */
8733 if (-occ > MAX_HDR_HISTORY)
8734 return 0;
8735
8736 found = hist_ptr = 0;
8737 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8738 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8739 len_hist[hist_ptr] = ctx->vlen;
8740 if (++hist_ptr >= MAX_HDR_HISTORY)
8741 hist_ptr = 0;
8742 found++;
8743 }
8744 if (-occ > found)
8745 return 0;
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8746
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8747 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8748 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8749 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8750 * to remain in the 0..9 range.
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8751 */
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8752 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8753 if (hist_ptr >= MAX_HDR_HISTORY)
8754 hist_ptr -= MAX_HDR_HISTORY;
8755 *vptr = ptr_hist[hist_ptr];
8756 *vlen = len_hist[hist_ptr];
8757 return 1;
8758}
8759
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8760/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8761 * Print a debug line with a header. Always stop at the first CR or LF char,
8762 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8763 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8764 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8765void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8766{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8767 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8768 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8769
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8770 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8771 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8772 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8773 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]8774
8775 for (max = 0; start + max < end; max++)
8776 if (start[max] == '\r' || start[max] == '\n')
8777 break;
8778
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8779 UBOUND(max, trash.size - trash.len - 3);
8780 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8781 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8782 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8783}
8784
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8785
8786/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8787 * The hdr_idx is allocated as well. In case of allocation failure, everything
8788 * allocated is freed and NULL is returned. Otherwise the new transaction is
8789 * assigned to the stream and returned.
8790 */
8791struct http_txn *http_alloc_txn(struct stream *s)
8792{
8793 struct http_txn *txn = s->txn;
8794
8795 if (txn)
8796 return txn;
8797
8798 txn = pool_alloc2(pool2_http_txn);
8799 if (!txn)
8800 return txn;
8801
8802 txn->hdr_idx.size = global.tune.max_http_hdr;
8803 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8804 if (!txn->hdr_idx.v) {
8805 pool_free2(pool2_http_txn, txn);
8806 return NULL;
8807 }
8808
8809 s->txn = txn;
8810 return txn;
8811}
8812
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8813void http_txn_reset_req(struct http_txn *txn)
8814{
8815 txn->req.flags = 0;
8816 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
8817 txn->req.next = 0;
8818 txn->req.chunk_len = 0LL;
8819 txn->req.body_len = 0LL;
8820 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8821}
8822
8823void http_txn_reset_res(struct http_txn *txn)
8824{
8825 txn->rsp.flags = 0;
8826 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
8827 txn->rsp.next = 0;
8828 txn->rsp.chunk_len = 0LL;
8829 txn->rsp.body_len = 0LL;
8830 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
8831}
8832
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8833/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8834 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8835 * the required fields are properly allocated and that we only need to (re)init
8836 * them. This should be used before processing any new request.
8837 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8838void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8839{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8840 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8841 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8842
8843 txn->flags = 0;
8844 txn->status = -1;
8845
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8846 txn->cookie_first_date = 0;
8847 txn->cookie_last_date = 0;
8848
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8849 txn->srv_cookie = NULL;
8850 txn->cli_cookie = NULL;
8851 txn->uri = NULL;
8852
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8853 http_txn_reset_req(txn);
8854 http_txn_reset_res(txn);
8855
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8856 txn->req.chn = &s->req;
8857 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8858
8859 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8860
8861 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8862 if (fe->options2 & PR_O2_REQBUG_OK)
8863 txn->req.err_pos = -1; /* let buggy requests pass */
8864
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8865 if (txn->hdr_idx.v)
8866 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]8867
8868 vars_init(&s->vars_txn, SCOPE_TXN);
8869 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8870}
8871
8872/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8873void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8874{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8875 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8876 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8877
8878 /* these ones will have been dynamically allocated */
8879 pool_free2(pool2_requri, txn->uri);
8880 pool_free2(pool2_capture, txn->cli_cookie);
8881 pool_free2(pool2_capture, txn->srv_cookie);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8882 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8883
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8884 s->unique_id = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8885 txn->uri = NULL;
8886 txn->srv_cookie = NULL;
8887 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8888
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8889 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8890 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8891 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8892 pool_free2(h->pool, s->req_cap[h->index]);
8893 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8894 }
8895
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8896 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8897 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8898 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8899 pool_free2(h->pool, s->res_cap[h->index]);
8900 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8901 }
8902
Willy Tarreau6204cd92016-03-10 16:33:04 +0100[diff] [blame]8903 vars_prune(&s->vars_txn, s->sess, s);
8904 vars_prune(&s->vars_reqres, s->sess, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8905}
8906
8907/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8908void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8909{
8910 http_end_txn(s);
8911 http_init_txn(s);
8912
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]8913 /* reinitialise the current rule list pointer to NULL. We are sure that
8914 * any rulelist match the NULL pointer.
8915 */
8916 s->current_rule_list = NULL;
8917
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8918 s->be = strm_fe(s);
8919 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8920 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8921 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8922 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8923 /* re-init store persistence */
8924 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8925 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8926
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8927 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8928
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8929 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8930
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8931 /* We must trim any excess data from the response buffer, because we
8932 * may have blocked an invalid response from a server that we don't
8933 * want to accidentely forward once we disable the analysers, nor do
8934 * we want those data to come along with next response. A typical
8935 * example of such data would be from a buggy server responding to
8936 * a HEAD with some data, or sending more than the advertised
8937 * content-length.
8938 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8939 if (unlikely(s->res.buf->i))
8940 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8941
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8942 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8943 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8944
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8945 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8946 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8947
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8948 s->req.rex = TICK_ETERNITY;
8949 s->req.wex = TICK_ETERNITY;
8950 s->req.analyse_exp = TICK_ETERNITY;
8951 s->res.rex = TICK_ETERNITY;
8952 s->res.wex = TICK_ETERNITY;
8953 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8954}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8955
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8956void free_http_res_rules(struct list *r)
8957{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8958 struct act_rule *tr, *pr;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8959
8960 list_for_each_entry_safe(pr, tr, r, list) {
8961 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8962 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8963 free(pr);
8964 }
8965}
8966
8967void free_http_req_rules(struct list *r)
8968{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8969 struct act_rule *tr, *pr;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8970
8971 list_for_each_entry_safe(pr, tr, r, list) {
8972 LIST_DEL(&pr->list);
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8973 if (pr->action == ACT_HTTP_REQ_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8974 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8975
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8976 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8977 free(pr);
8978 }
8979}
8980
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8981/* parse an "http-request" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8982struct 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]8983{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8984 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]8985 struct action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8986 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8987 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8988
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]8989 rule = calloc(1, sizeof(*rule));
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8990 if (!rule) {
8991 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8992 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8993 }
8994
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8995 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8996 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8997 rule->action = ACT_ACTION_ALLOW;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8998 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8999 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9000 int code;
9001 int hc;
9002
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9003 rule->action = ACT_ACTION_DENY;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9004 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9005 if (strcmp(args[cur_arg], "deny_status") == 0) {
9006 cur_arg++;
9007 if (!args[cur_arg]) {
9008 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
9009 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9010 goto out_err;
9011 }
9012
9013 code = atol(args[cur_arg]);
9014 cur_arg++;
9015 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
9016 if (http_err_codes[hc] == code) {
9017 rule->deny_status = hc;
9018 break;
9019 }
9020 }
9021
9022 if (hc >= HTTP_ERR_SIZE) {
9023 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
9024 file, linenum, code);
9025 }
9026 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]9027 } else if (!strcmp(args[0], "tarpit")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9028 rule->action = ACT_HTTP_REQ_TARPIT;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]9029 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9030 } else if (!strcmp(args[0], "auth")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9031 rule->action = ACT_HTTP_REQ_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9032 cur_arg = 1;
9033
9034 while(*args[cur_arg]) {
9035 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9036 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9037 cur_arg+=2;
9038 continue;
9039 } else
9040 break;
9041 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9042 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9043 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9044 cur_arg = 1;
9045
9046 if (!*args[cur_arg] ||
9047 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9048 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
9049 file, linenum, args[0]);
9050 goto out_err;
9051 }
9052 rule->arg.nice = atoi(args[cur_arg]);
9053 if (rule->arg.nice < -1024)
9054 rule->arg.nice = -1024;
9055 else if (rule->arg.nice > 1024)
9056 rule->arg.nice = 1024;
9057 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9058 } else if (!strcmp(args[0], "set-tos")) {
9059#ifdef IP_TOS
9060 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9061 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9062 cur_arg = 1;
9063
9064 if (!*args[cur_arg] ||
9065 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9066 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9067 file, linenum, args[0]);
9068 goto out_err;
9069 }
9070
9071 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9072 if (err && *err != '\0') {
9073 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9074 file, linenum, err, args[0]);
9075 goto out_err;
9076 }
9077 cur_arg++;
9078#else
9079 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9080 goto out_err;
9081#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9082 } else if (!strcmp(args[0], "set-mark")) {
9083#ifdef SO_MARK
9084 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9085 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9086 cur_arg = 1;
9087
9088 if (!*args[cur_arg] ||
9089 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9090 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9091 file, linenum, args[0]);
9092 goto out_err;
9093 }
9094
9095 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9096 if (err && *err != '\0') {
9097 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9098 file, linenum, err, args[0]);
9099 goto out_err;
9100 }
9101 cur_arg++;
9102 global.last_checks |= LSTCHK_NETADM;
9103#else
9104 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9105 goto out_err;
9106#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9107 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9108 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9109 cur_arg = 1;
9110
9111 if (!*args[cur_arg] ||
9112 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9113 bad_log_level:
9114 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
9115 file, linenum, args[0]);
9116 goto out_err;
9117 }
9118 if (strcmp(args[cur_arg], "silent") == 0)
9119 rule->arg.loglevel = -1;
9120 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
9121 goto bad_log_level;
9122 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9123 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9124 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9125 cur_arg = 1;
9126
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]9127 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9128 (*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]9129 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9130 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9131 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9132 }
9133
9134 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9135 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9136 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]9137
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9138 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9139 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]9140 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9141 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9142 free(proxy->conf.lfs_file);
9143 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9144 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9145 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9146 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9147 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9148 cur_arg = 1;
9149
9150 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]9151 (*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]9152 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9153 file, linenum, args[0]);
9154 goto out_err;
9155 }
9156
9157 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9158 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9159 LIST_INIT(&rule->arg.hdr_add.fmt);
9160
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9161 error = NULL;
9162 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9163 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9164 args[cur_arg + 1], error);
9165 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9166 goto out_err;
9167 }
9168
9169 proxy->conf.args.ctx = ARGC_HRQ;
9170 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9171 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9172 file, linenum);
9173
9174 free(proxy->conf.lfs_file);
9175 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9176 proxy->conf.lfs_line = proxy->conf.args.line;
9177 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9178 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9179 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9180 cur_arg = 1;
9181
9182 if (!*args[cur_arg] ||
9183 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9184 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9185 file, linenum, args[0]);
9186 goto out_err;
9187 }
9188
9189 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9190 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9191
9192 proxy->conf.args.ctx = ARGC_HRQ;
9193 free(proxy->conf.lfs_file);
9194 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9195 proxy->conf.lfs_line = proxy->conf.args.line;
9196 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9197 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9198 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9199 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9200 struct sample_expr *expr;
9201 unsigned int where;
9202 char *err = NULL;
9203
9204 cur_arg = 1;
9205 proxy->conf.args.ctx = ARGC_TRK;
9206
9207 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9208 if (!expr) {
9209 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9210 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9211 free(err);
9212 goto out_err;
9213 }
9214
9215 where = 0;
9216 if (proxy->cap & PR_CAP_FE)
9217 where |= SMP_VAL_FE_HRQ_HDR;
9218 if (proxy->cap & PR_CAP_BE)
9219 where |= SMP_VAL_BE_HRQ_HDR;
9220
9221 if (!(expr->fetch->val & where)) {
9222 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9223 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9224 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9225 args[cur_arg-1], sample_src_names(expr->fetch->use));
9226 free(expr);
9227 goto out_err;
9228 }
9229
9230 if (strcmp(args[cur_arg], "table") == 0) {
9231 cur_arg++;
9232 if (!args[cur_arg]) {
9233 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9234 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9235 free(expr);
9236 goto out_err;
9237 }
9238 /* we copy the table name for now, it will be resolved later */
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9239 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9240 cur_arg++;
9241 }
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9242 rule->arg.trk_ctr.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9243 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9244 } else if (strcmp(args[0], "redirect") == 0) {
9245 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9246 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9247
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9248 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]9249 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9250 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9251 goto out_err;
9252 }
9253
9254 /* this redirect rule might already contain a parsed condition which
9255 * we'll pass to the http-request rule.
9256 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9257 rule->action = ACT_HTTP_REDIR;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9258 rule->arg.redir = redir;
9259 rule->cond = redir->cond;
9260 redir->cond = NULL;
9261 cur_arg = 2;
9262 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9263 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9264 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9265 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9266 /*
9267 * '+ 8' for 'add-acl('
9268 * '- 9' for 'add-acl(' + trailing ')'
9269 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9270 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9271
9272 cur_arg = 1;
9273
9274 if (!*args[cur_arg] ||
9275 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9276 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9277 file, linenum, args[0]);
9278 goto out_err;
9279 }
9280
9281 LIST_INIT(&rule->arg.map.key);
9282 proxy->conf.args.ctx = ARGC_HRQ;
9283 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9284 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9285 file, linenum);
9286 free(proxy->conf.lfs_file);
9287 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9288 proxy->conf.lfs_line = proxy->conf.args.line;
9289 cur_arg += 1;
9290 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9291 /* http-request del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9292 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9293 /*
9294 * '+ 8' for 'del-acl('
9295 * '- 9' for 'del-acl(' + trailing ')'
9296 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9297 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9298
9299 cur_arg = 1;
9300
9301 if (!*args[cur_arg] ||
9302 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9303 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9304 file, linenum, args[0]);
9305 goto out_err;
9306 }
9307
9308 LIST_INIT(&rule->arg.map.key);
9309 proxy->conf.args.ctx = ARGC_HRQ;
9310 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9311 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9312 file, linenum);
9313 free(proxy->conf.lfs_file);
9314 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9315 proxy->conf.lfs_line = proxy->conf.args.line;
9316 cur_arg += 1;
9317 } else if (strncmp(args[0], "del-map", 7) == 0) {
9318 /* http-request del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9319 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9320 /*
9321 * '+ 8' for 'del-map('
9322 * '- 9' for 'del-map(' + trailing ')'
9323 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9324 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9325
9326 cur_arg = 1;
9327
9328 if (!*args[cur_arg] ||
9329 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9330 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9331 file, linenum, args[0]);
9332 goto out_err;
9333 }
9334
9335 LIST_INIT(&rule->arg.map.key);
9336 proxy->conf.args.ctx = ARGC_HRQ;
9337 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9338 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9339 file, linenum);
9340 free(proxy->conf.lfs_file);
9341 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9342 proxy->conf.lfs_line = proxy->conf.args.line;
9343 cur_arg += 1;
9344 } else if (strncmp(args[0], "set-map", 7) == 0) {
9345 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9346 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9347 /*
9348 * '+ 8' for 'set-map('
9349 * '- 9' for 'set-map(' + trailing ')'
9350 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9351 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9352
9353 cur_arg = 1;
9354
9355 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9356 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9357 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9358 file, linenum, args[0]);
9359 goto out_err;
9360 }
9361
9362 LIST_INIT(&rule->arg.map.key);
9363 LIST_INIT(&rule->arg.map.value);
9364 proxy->conf.args.ctx = ARGC_HRQ;
9365
9366 /* key pattern */
9367 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9368 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9369 file, linenum);
9370
9371 /* value pattern */
9372 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9373 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9374 file, linenum);
9375 free(proxy->conf.lfs_file);
9376 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9377 proxy->conf.lfs_line = proxy->conf.args.line;
9378
9379 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9380 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9381 char *errmsg = NULL;
9382 cur_arg = 1;
9383 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9384 rule->from = ACT_F_HTTP_REQ;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9385 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9386 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9387 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9388 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9389 free(errmsg);
9390 goto out_err;
9391 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9392 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9393 action_build_list(&http_req_keywords.list, &trash);
9394 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', "
9395 "'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9396 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', 'track-sc*'"
William Lallemand2e785f22016-05-25 01:48:42 +0200[diff] [blame]9397 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9398 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9399 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9400 }
9401
9402 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9403 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9404 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9405
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9406 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9407 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9408 file, linenum, args[0], errmsg);
9409 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9410 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9411 }
9412 rule->cond = cond;
9413 }
9414 else if (*args[cur_arg]) {
9415 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9416 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9417 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9418 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9419 }
9420
9421 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9422 out_err:
9423 free(rule);
9424 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9425}
9426
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9427/* parse an "http-respose" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9428struct 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]9429{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9430 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]9431 struct action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9432 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9433 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9434
9435 rule = calloc(1, sizeof(*rule));
9436 if (!rule) {
9437 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9438 goto out_err;
9439 }
9440
9441 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9442 rule->action = ACT_ACTION_ALLOW;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9443 cur_arg = 1;
9444 } else if (!strcmp(args[0], "deny")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9445 rule->action = ACT_ACTION_DENY;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9446 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9447 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9448 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9449 cur_arg = 1;
9450
9451 if (!*args[cur_arg] ||
9452 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9453 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9454 file, linenum, args[0]);
9455 goto out_err;
9456 }
9457 rule->arg.nice = atoi(args[cur_arg]);
9458 if (rule->arg.nice < -1024)
9459 rule->arg.nice = -1024;
9460 else if (rule->arg.nice > 1024)
9461 rule->arg.nice = 1024;
9462 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9463 } else if (!strcmp(args[0], "set-tos")) {
9464#ifdef IP_TOS
9465 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9466 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9467 cur_arg = 1;
9468
9469 if (!*args[cur_arg] ||
9470 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9471 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9472 file, linenum, args[0]);
9473 goto out_err;
9474 }
9475
9476 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9477 if (err && *err != '\0') {
9478 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9479 file, linenum, err, args[0]);
9480 goto out_err;
9481 }
9482 cur_arg++;
9483#else
9484 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9485 goto out_err;
9486#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9487 } else if (!strcmp(args[0], "set-mark")) {
9488#ifdef SO_MARK
9489 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9490 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9491 cur_arg = 1;
9492
9493 if (!*args[cur_arg] ||
9494 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9495 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9496 file, linenum, args[0]);
9497 goto out_err;
9498 }
9499
9500 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9501 if (err && *err != '\0') {
9502 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9503 file, linenum, err, args[0]);
9504 goto out_err;
9505 }
9506 cur_arg++;
9507 global.last_checks |= LSTCHK_NETADM;
9508#else
9509 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9510 goto out_err;
9511#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9512 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9513 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9514 cur_arg = 1;
9515
9516 if (!*args[cur_arg] ||
9517 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9518 bad_log_level:
9519 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9520 file, linenum, args[0]);
9521 goto out_err;
9522 }
9523 if (strcmp(args[cur_arg], "silent") == 0)
9524 rule->arg.loglevel = -1;
Ruoshan Huangdd016782016-06-15 22:16:03 +0800[diff] [blame]9525 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9526 goto bad_log_level;
9527 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9528 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9529 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9530 cur_arg = 1;
9531
9532 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9533 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9534 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9535 file, linenum, args[0]);
9536 goto out_err;
9537 }
9538
9539 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9540 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9541 LIST_INIT(&rule->arg.hdr_add.fmt);
9542
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9543 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9544 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]9545 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9546 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9547 free(proxy->conf.lfs_file);
9548 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9549 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9550 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9551 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9552 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9553 cur_arg = 1;
9554
9555 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9556 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9557 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9558 file, linenum, args[0]);
9559 goto out_err;
9560 }
9561
9562 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9563 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9564 LIST_INIT(&rule->arg.hdr_add.fmt);
9565
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9566 error = NULL;
9567 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9568 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9569 args[cur_arg + 1], error);
9570 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9571 goto out_err;
9572 }
9573
9574 proxy->conf.args.ctx = ARGC_HRQ;
9575 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9576 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9577 file, linenum);
9578
9579 free(proxy->conf.lfs_file);
9580 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9581 proxy->conf.lfs_line = proxy->conf.args.line;
9582 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9583 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9584 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9585 cur_arg = 1;
9586
9587 if (!*args[cur_arg] ||
9588 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9589 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9590 file, linenum, args[0]);
9591 goto out_err;
9592 }
9593
9594 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9595 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9596
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9597 proxy->conf.args.ctx = ARGC_HRS;
9598 free(proxy->conf.lfs_file);
9599 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9600 proxy->conf.lfs_line = proxy->conf.args.line;
9601 cur_arg += 1;
9602 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9603 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9604 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9605 /*
9606 * '+ 8' for 'add-acl('
9607 * '- 9' for 'add-acl(' + trailing ')'
9608 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9609 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9610
9611 cur_arg = 1;
9612
9613 if (!*args[cur_arg] ||
9614 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9615 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9616 file, linenum, args[0]);
9617 goto out_err;
9618 }
9619
9620 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9621 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9622 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9623 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9624 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9625 free(proxy->conf.lfs_file);
9626 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9627 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9628
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9629 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9630 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9631 /* http-response del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9632 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9633 /*
9634 * '+ 8' for 'del-acl('
9635 * '- 9' for 'del-acl(' + trailing ')'
9636 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9637 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9638
9639 cur_arg = 1;
9640
9641 if (!*args[cur_arg] ||
9642 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9643 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9644 file, linenum, args[0]);
9645 goto out_err;
9646 }
9647
9648 LIST_INIT(&rule->arg.map.key);
9649 proxy->conf.args.ctx = ARGC_HRS;
9650 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9651 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9652 file, linenum);
9653 free(proxy->conf.lfs_file);
9654 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9655 proxy->conf.lfs_line = proxy->conf.args.line;
9656 cur_arg += 1;
9657 } else if (strncmp(args[0], "del-map", 7) == 0) {
9658 /* http-response del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9659 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9660 /*
9661 * '+ 8' for 'del-map('
9662 * '- 9' for 'del-map(' + trailing ')'
9663 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9664 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9665
9666 cur_arg = 1;
9667
9668 if (!*args[cur_arg] ||
9669 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9670 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9671 file, linenum, args[0]);
9672 goto out_err;
9673 }
9674
9675 LIST_INIT(&rule->arg.map.key);
9676 proxy->conf.args.ctx = ARGC_HRS;
9677 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9678 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9679 file, linenum);
9680 free(proxy->conf.lfs_file);
9681 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9682 proxy->conf.lfs_line = proxy->conf.args.line;
9683 cur_arg += 1;
9684 } else if (strncmp(args[0], "set-map", 7) == 0) {
9685 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9686 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9687 /*
9688 * '+ 8' for 'set-map('
9689 * '- 9' for 'set-map(' + trailing ')'
9690 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9691 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9692
9693 cur_arg = 1;
9694
9695 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9696 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9697 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9698 file, linenum, args[0]);
9699 goto out_err;
9700 }
9701
9702 LIST_INIT(&rule->arg.map.key);
9703 LIST_INIT(&rule->arg.map.value);
9704
9705 proxy->conf.args.ctx = ARGC_HRS;
9706
9707 /* key pattern */
9708 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9709 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9710 file, linenum);
9711
9712 /* value pattern */
9713 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9714 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9715 file, linenum);
9716
9717 free(proxy->conf.lfs_file);
9718 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9719 proxy->conf.lfs_line = proxy->conf.args.line;
9720
9721 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9722 } else if (strcmp(args[0], "redirect") == 0) {
9723 struct redirect_rule *redir;
9724 char *errmsg = NULL;
9725
9726 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9727 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9728 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9729 goto out_err;
9730 }
9731
9732 /* this redirect rule might already contain a parsed condition which
9733 * we'll pass to the http-request rule.
9734 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9735 rule->action = ACT_HTTP_REDIR;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9736 rule->arg.redir = redir;
9737 rule->cond = redir->cond;
9738 redir->cond = NULL;
9739 cur_arg = 2;
9740 return rule;
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9741 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9742 args[0][9] == '\0' && args[0][8] >= '0' &&
9743 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
9744 struct sample_expr *expr;
9745 unsigned int where;
9746 char *err = NULL;
9747
9748 cur_arg = 1;
9749 proxy->conf.args.ctx = ARGC_TRK;
9750
9751 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9752 if (!expr) {
9753 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9754 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9755 free(err);
9756 goto out_err;
9757 }
9758
9759 where = 0;
9760 if (proxy->cap & PR_CAP_FE)
9761 where |= SMP_VAL_FE_HRS_HDR;
9762 if (proxy->cap & PR_CAP_BE)
9763 where |= SMP_VAL_BE_HRS_HDR;
9764
9765 if (!(expr->fetch->val & where)) {
9766 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule :"
9767 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9768 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9769 args[cur_arg-1], sample_src_names(expr->fetch->use));
9770 free(expr);
9771 goto out_err;
9772 }
9773
9774 if (strcmp(args[cur_arg], "table") == 0) {
9775 cur_arg++;
9776 if (!args[cur_arg]) {
9777 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : missing table name.\n",
9778 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9779 free(expr);
9780 goto out_err;
9781 }
9782 /* we copy the table name for now, it will be resolved later */
9783 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
9784 cur_arg++;
9785 }
9786 rule->arg.trk_ctr.expr = expr;
9787 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9788 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9789 char *errmsg = NULL;
9790 cur_arg = 1;
9791 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9792 rule->from = ACT_F_HTTP_RES;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9793 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9794 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9795 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9796 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9797 free(errmsg);
9798 goto out_err;
9799 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9800 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9801 action_build_list(&http_res_keywords.list, &trash);
9802 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', "
9803 "'add-header', 'del-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9804 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', 'track-sc*'"
William Lallemand2e785f22016-05-25 01:48:42 +0200[diff] [blame]9805 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9806 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9807 goto out_err;
9808 }
9809
9810 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9811 struct acl_cond *cond;
9812 char *errmsg = NULL;
9813
9814 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9815 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9816 file, linenum, args[0], errmsg);
9817 free(errmsg);
9818 goto out_err;
9819 }
9820 rule->cond = cond;
9821 }
9822 else if (*args[cur_arg]) {
9823 Alert("parsing [%s:%d]: 'http-response %s' expects"
9824 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9825 file, linenum, args[0], args[cur_arg]);
9826 goto out_err;
9827 }
9828
9829 return rule;
9830 out_err:
9831 free(rule);
9832 return NULL;
9833}
9834
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9835/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9836 * 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]9837 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9838 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9839 */
9840struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9841 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9842{
9843 struct redirect_rule *rule;
9844 int cur_arg;
9845 int type = REDIRECT_TYPE_NONE;
9846 int code = 302;
9847 const char *destination = NULL;
9848 const char *cookie = NULL;
9849 int cookie_set = 0;
9850 unsigned int flags = REDIRECT_FLAG_NONE;
9851 struct acl_cond *cond = NULL;
9852
9853 cur_arg = 0;
9854 while (*(args[cur_arg])) {
9855 if (strcmp(args[cur_arg], "location") == 0) {
9856 if (!*args[cur_arg + 1])
9857 goto missing_arg;
9858
9859 type = REDIRECT_TYPE_LOCATION;
9860 cur_arg++;
9861 destination = args[cur_arg];
9862 }
9863 else if (strcmp(args[cur_arg], "prefix") == 0) {
9864 if (!*args[cur_arg + 1])
9865 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9866 type = REDIRECT_TYPE_PREFIX;
9867 cur_arg++;
9868 destination = args[cur_arg];
9869 }
9870 else if (strcmp(args[cur_arg], "scheme") == 0) {
9871 if (!*args[cur_arg + 1])
9872 goto missing_arg;
9873
9874 type = REDIRECT_TYPE_SCHEME;
9875 cur_arg++;
9876 destination = args[cur_arg];
9877 }
9878 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9879 if (!*args[cur_arg + 1])
9880 goto missing_arg;
9881
9882 cur_arg++;
9883 cookie = args[cur_arg];
9884 cookie_set = 1;
9885 }
9886 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9887 if (!*args[cur_arg + 1])
9888 goto missing_arg;
9889
9890 cur_arg++;
9891 cookie = args[cur_arg];
9892 cookie_set = 0;
9893 }
9894 else if (strcmp(args[cur_arg], "code") == 0) {
9895 if (!*args[cur_arg + 1])
9896 goto missing_arg;
9897
9898 cur_arg++;
9899 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9900 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9901 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9902 "'%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]9903 args[cur_arg - 1], args[cur_arg]);
9904 return NULL;
9905 }
9906 }
9907 else if (!strcmp(args[cur_arg],"drop-query")) {
9908 flags |= REDIRECT_FLAG_DROP_QS;
9909 }
9910 else if (!strcmp(args[cur_arg],"append-slash")) {
9911 flags |= REDIRECT_FLAG_APPEND_SLASH;
9912 }
9913 else if (strcmp(args[cur_arg], "if") == 0 ||
9914 strcmp(args[cur_arg], "unless") == 0) {
9915 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9916 if (!cond) {
9917 memprintf(errmsg, "error in condition: %s", *errmsg);
9918 return NULL;
9919 }
9920 break;
9921 }
9922 else {
9923 memprintf(errmsg,
9924 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9925 args[cur_arg]);
9926 return NULL;
9927 }
9928 cur_arg++;
9929 }
9930
9931 if (type == REDIRECT_TYPE_NONE) {
9932 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9933 return NULL;
9934 }
9935
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9936 if (dir && type != REDIRECT_TYPE_LOCATION) {
9937 memprintf(errmsg, "response only supports redirect type 'location'");
9938 return NULL;
9939 }
9940
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]9941 rule = calloc(1, sizeof(*rule));
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9942 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9943 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9944
9945 if (!use_fmt) {
9946 /* old-style static redirect rule */
9947 rule->rdr_str = strdup(destination);
9948 rule->rdr_len = strlen(destination);
9949 }
9950 else {
9951 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9952
9953 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9954 * if prefix == "/", we don't want to add anything, otherwise it
9955 * makes it hard for the user to configure a self-redirection.
9956 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]9957 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9958 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9959 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9960 dir ? (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRS_HDR : SMP_VAL_BE_HRS_HDR
9961 : (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]9962 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9963 free(curproxy->conf.lfs_file);
9964 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9965 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9966 }
9967 }
9968
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9969 if (cookie) {
9970 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9971 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9972 */
9973 rule->cookie_len = strlen(cookie);
9974 if (cookie_set) {
9975 rule->cookie_str = malloc(rule->cookie_len + 10);
9976 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9977 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9978 rule->cookie_len += 9;
9979 } else {
9980 rule->cookie_str = malloc(rule->cookie_len + 21);
9981 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9982 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9983 rule->cookie_len += 20;
9984 }
9985 }
9986 rule->type = type;
9987 rule->code = code;
9988 rule->flags = flags;
9989 LIST_INIT(&rule->list);
9990 return rule;
9991
9992 missing_arg:
9993 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9994 return NULL;
9995}
9996
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9997/************************************************************************/
9998/* The code below is dedicated to ACL parsing and matching */
9999/************************************************************************/
10000
10001
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10002/* This function ensures that the prerequisites for an L7 fetch are ready,
10003 * which means that a request or response is ready. If some data is missing,
10004 * 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]10005 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
10006 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10007 *
10008 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10009 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
10010 * decide whether or not an HTTP message is present ;
10011 * 0 if the requested data cannot be fetched or if it is certain that
10012 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10013 * 1 if an HTTP message is ready
10014 */
James Rosewell91a41cb2015-09-18 17:11:16 +0100[diff] [blame]10015int smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10016 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10017{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10018 struct http_txn *txn;
10019 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10020
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10021 /* Note: it is possible that <s> is NULL when called before stream
10022 * initialization (eg: tcp-request connection), so this function is the
10023 * one responsible for guarding against this case for all HTTP users.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10024 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10025 if (!s)
10026 return 0;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10027
Thierry FOURNIERed08d6a2015-09-24 08:40:18 +0200[diff] [blame]10028 if (!s->txn) {
10029 if (unlikely(!http_alloc_txn(s)))
10030 return 0; /* not enough memory */
10031 http_init_txn(s);
10032 }
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10033 txn = s->txn;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10034 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10035
10036 /* Check for a dependency on a request */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10037 smp->data.type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10038
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10039 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10040 /* If the buffer does not leave enough free space at the end,
10041 * we must first realign it.
10042 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10043 if (s->req.buf->p > s->req.buf->data &&
10044 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
10045 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10046
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10047 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]10048 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10049 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10050
10051 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10052 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10053 http_msg_analyzer(msg, &txn->hdr_idx);
10054
10055 /* Still no valid request ? */
10056 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]10057 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10058 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10059 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10060 }
10061 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10062 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10063 return 0;
10064 }
10065
10066 /* OK we just got a valid HTTP request. We have some minor
10067 * preparation to perform so that further checks can rely
10068 * on HTTP tests.
10069 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10070
10071 /* If the request was parsed but was too large, we must absolutely
10072 * return an error so that it is not processed. At the moment this
10073 * cannot happen, but if the parsers are to change in the future,
10074 * we want this check to be maintained.
10075 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10076 if (unlikely(s->req.buf->i + s->req.buf->p >
10077 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10078 msg->msg_state = HTTP_MSG_ERROR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10079 smp->data.u.sint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10080 return 1;
10081 }
10082
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10083 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10084 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]10085 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10086
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10087 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
10088 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10089 }
10090
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10091 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10092 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10093 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10094
10095 /* otherwise everything's ready for the request */
10096 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10097 else {
10098 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10099 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
10100 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10101 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10102 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10103 }
10104
10105 /* everything's OK */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10106 smp->data.u.sint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10107 return 1;
10108}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10109
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10110/* 1. Check on METHOD
10111 * We use the pre-parsed method if it is known, and store its number as an
10112 * integer. If it is unknown, we use the pointer and the length.
10113 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10114static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10115{
10116 int len, meth;
10117
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]10118 len = strlen(text);
10119 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10120
10121 pattern->val.i = meth;
10122 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]10123 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10124 pattern->len = len;
10125 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10126 else {
10127 pattern->ptr.str = NULL;
10128 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10129 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10130 return 1;
10131}
10132
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10133/* This function fetches the method of current HTTP request and stores
10134 * it in the global pattern struct as a chunk. There are two possibilities :
10135 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
10136 * in <len> and <ptr> is NULL ;
10137 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
10138 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10139 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10140 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10141static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10142smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10143{
10144 int meth;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10145 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10146
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10147 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10148
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10149 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10150 meth = txn->meth;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10151 smp->data.type = SMP_T_METH;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10152 smp->data.u.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10153 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10154 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
10155 /* ensure the indexes are not affected */
10156 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10157 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10158 smp->data.u.meth.str.len = txn->req.sl.rq.m_l;
10159 smp->data.u.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10160 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10161 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10162 return 1;
10163}
10164
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10165/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10166static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10167{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10168 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10169 struct pattern_list *lst;
10170 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10171
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10172 list_for_each_entry(lst, &expr->patterns, list) {
10173 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10174
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10175 /* well-known method */
10176 if (pattern->val.i != HTTP_METH_OTHER) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10177 if (smp->data.u.meth.meth == pattern->val.i)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10178 return pattern;
10179 else
10180 continue;
10181 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10182
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10183 /* Other method, we must compare the strings */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10184 if (pattern->len != smp->data.u.meth.str.len)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10185 continue;
10186
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10187 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10188 if ((icase && strncasecmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0) ||
10189 (!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]10190 return pattern;
10191 }
10192 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10193}
10194
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10195static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10196smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10197{
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10198 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10199 char *ptr;
10200 int len;
10201
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10202 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10203
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10204 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10205 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10206 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10207
10208 while ((len-- > 0) && (*ptr++ != '/'));
10209 if (len <= 0)
10210 return 0;
10211
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10212 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10213 smp->data.u.str.str = ptr;
10214 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10215
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10216 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10217 return 1;
10218}
10219
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10220static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10221smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10222{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10223 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10224 char *ptr;
10225 int len;
10226
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10227 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10228
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10229 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10230 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10231 return 0;
10232
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10233 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10234 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10235
10236 while ((len-- > 0) && (*ptr++ != '/'));
10237 if (len <= 0)
10238 return 0;
10239
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10240 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10241 smp->data.u.str.str = ptr;
10242 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10243
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10244 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10245 return 1;
10246}
10247
10248/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10249static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10250smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10251{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10252 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10253 char *ptr;
10254 int len;
10255
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10256 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10257
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10258 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10259 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10260 return 0;
10261
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10262 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10263 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10264
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10265 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10266 smp->data.u.sint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10267 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10268 return 1;
10269}
10270
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]10271static int
10272smp_fetch_uniqueid(const struct arg *args, struct sample *smp, const char *kw, void *private)
10273{
10274 if (LIST_ISEMPTY(&smp->sess->fe->format_unique_id))
10275 return 0;
10276
10277 if (!smp->strm->unique_id) {
10278 if ((smp->strm->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
10279 return 0;
10280 smp->strm->unique_id[0] = '\0';
10281 }
10282 smp->data.u.str.len = build_logline(smp->strm, smp->strm->unique_id,
10283 UNIQUEID_LEN, &smp->sess->fe->format_unique_id);
10284
10285 smp->data.type = SMP_T_STR;
10286 smp->data.u.str.str = smp->strm->unique_id;
10287 smp->flags = SMP_F_CONST;
10288 return 1;
10289}
10290
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10291/* returns the longest available part of the body. This requires that the body
10292 * has been waited for using http-buffer-request.
10293 */
10294static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10295smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10296{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10297 struct http_msg *msg;
10298 unsigned long len;
10299 unsigned long block1;
10300 char *body;
10301 struct chunk *temp;
10302
10303 CHECK_HTTP_MESSAGE_FIRST();
10304
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10305 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10306 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10307 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10308 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10309
10310 len = http_body_bytes(msg);
10311 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10312
10313 block1 = len;
10314 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10315 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10316
10317 if (block1 == len) {
10318 /* buffer is not wrapped (or empty) */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10319 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10320 smp->data.u.str.str = body;
10321 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10322 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10323 }
10324 else {
10325 /* buffer is wrapped, we need to defragment it */
10326 temp = get_trash_chunk();
10327 memcpy(temp->str, body, block1);
10328 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10329 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10330 smp->data.u.str.str = temp->str;
10331 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10332 smp->flags = SMP_F_VOL_TEST;
10333 }
10334 return 1;
10335}
10336
10337
10338/* returns the available length of the body. This requires that the body
10339 * has been waited for using http-buffer-request.
10340 */
10341static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10342smp_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]10343{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10344 struct http_msg *msg;
10345
10346 CHECK_HTTP_MESSAGE_FIRST();
10347
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10348 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10349 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10350 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10351 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10352
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10353 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10354 smp->data.u.sint = http_body_bytes(msg);
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10355
10356 smp->flags = SMP_F_VOL_TEST;
10357 return 1;
10358}
10359
10360
10361/* returns the advertised length of the body, or the advertised size of the
10362 * chunks available in the buffer. This requires that the body has been waited
10363 * for using http-buffer-request.
10364 */
10365static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10366smp_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]10367{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10368 struct http_msg *msg;
10369
10370 CHECK_HTTP_MESSAGE_FIRST();
10371
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10372 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10373 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10374 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10375 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10376
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10377 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10378 smp->data.u.sint = msg->body_len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10379
10380 smp->flags = SMP_F_VOL_TEST;
10381 return 1;
10382}
10383
10384
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10385/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10386static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10387smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10388{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10389 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10390
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10391 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10392
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10393 txn = smp->strm->txn;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10394 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10395 smp->data.u.str.len = txn->req.sl.rq.u_l;
10396 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]10397 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10398 return 1;
10399}
10400
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10401static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10402smp_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]10403{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10404 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10405 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10406
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10407 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10408
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10409 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10410 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]10411 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10412 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10413
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10414 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10415 smp->data.u.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10416 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10417 return 1;
10418}
10419
10420static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10421smp_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]10422{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10423 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10424 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10425
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10426 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10427
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10428 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10429 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]10430 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10431 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10432
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10433 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10434 smp->data.u.sint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10435 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10436 return 1;
10437}
10438
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10439/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10440 * Accepts an optional argument of type string containing the header field name,
10441 * and an optional argument of type signed or unsigned integer to request an
10442 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10443 * headers are considered from the first one. It does not stop on commas and
10444 * returns full lines instead (useful for User-Agent or Date for example).
10445 */
10446static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10447smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10448{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10449 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10450 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10451 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10452 int occ = 0;
10453 const char *name_str = NULL;
10454 int name_len = 0;
10455
10456 if (!ctx) {
10457 /* first call */
10458 ctx = &static_hdr_ctx;
10459 ctx->idx = 0;
10460 smp->ctx.a[0] = ctx;
10461 }
10462
10463 if (args) {
10464 if (args[0].type != ARGT_STR)
10465 return 0;
10466 name_str = args[0].data.str.str;
10467 name_len = args[0].data.str.len;
10468
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10469 if (args[1].type == ARGT_SINT)
10470 occ = args[1].data.sint;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10471 }
10472
10473 CHECK_HTTP_MESSAGE_FIRST();
10474
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10475 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10476 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]10477
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10478 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10479 /* search for header from the beginning */
10480 ctx->idx = 0;
10481
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10482 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10483 /* no explicit occurrence and single fetch => last header by default */
10484 occ = -1;
10485
10486 if (!occ)
10487 /* prepare to report multiple occurrences for ACL fetches */
10488 smp->flags |= SMP_F_NOT_LAST;
10489
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10490 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10491 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10492 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]10493 return 1;
10494
10495 smp->flags &= ~SMP_F_NOT_LAST;
10496 return 0;
10497}
10498
10499/* 6. Check on HTTP header count. The number of occurrences is returned.
10500 * Accepts exactly 1 argument of type string. It does not stop on commas and
10501 * returns full lines instead (useful for User-Agent or Date for example).
10502 */
10503static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10504smp_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]10505{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10506 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10507 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10508 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10509 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10510 const char *name = NULL;
10511 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10512
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10513 if (args && args->type == ARGT_STR) {
10514 name = args->data.str.str;
10515 len = args->data.str.len;
10516 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10517
10518 CHECK_HTTP_MESSAGE_FIRST();
10519
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10520 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10521 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]10522
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10523 ctx.idx = 0;
10524 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10525 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10526 cnt++;
10527
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10528 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10529 smp->data.u.sint = cnt;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10530 smp->flags = SMP_F_VOL_HDR;
10531 return 1;
10532}
10533
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10534static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10535smp_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]10536{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10537 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10538 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10539 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10540 struct chunk *temp;
10541 char del = ',';
10542
10543 if (args && args->type == ARGT_STR)
10544 del = *args[0].data.str.str;
10545
10546 CHECK_HTTP_MESSAGE_FIRST();
10547
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10548 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10549 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]10550
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10551 temp = get_trash_chunk();
10552
10553 ctx.idx = 0;
10554 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10555 if (temp->len)
10556 temp->str[temp->len++] = del;
10557 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10558 temp->len += ctx.del;
10559 }
10560
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10561 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10562 smp->data.u.str.str = temp->str;
10563 smp->data.u.str.len = temp->len;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10564 smp->flags = SMP_F_VOL_HDR;
10565 return 1;
10566}
10567
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10568/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10569 * Accepts an optional argument of type string containing the header field name,
10570 * and an optional argument of type signed or unsigned integer to request an
10571 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10572 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10573 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10574static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10575smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10576{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10577 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10578 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10579 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10580 int occ = 0;
10581 const char *name_str = NULL;
10582 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10583
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10584 if (!ctx) {
10585 /* first call */
10586 ctx = &static_hdr_ctx;
10587 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10588 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10589 }
10590
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10591 if (args) {
10592 if (args[0].type != ARGT_STR)
10593 return 0;
10594 name_str = args[0].data.str.str;
10595 name_len = args[0].data.str.len;
10596
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10597 if (args[1].type == ARGT_SINT)
10598 occ = args[1].data.sint;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10599 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10600
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10601 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10602
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10603 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10604 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]10605
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10606 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10607 /* search for header from the beginning */
10608 ctx->idx = 0;
10609
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10610 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10611 /* no explicit occurrence and single fetch => last header by default */
10612 occ = -1;
10613
10614 if (!occ)
10615 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10616 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10617
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10618 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10619 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10620 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]10621 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10622
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10623 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10624 return 0;
10625}
10626
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10627/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10628 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10629 */
10630static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10631smp_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]10632{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10633 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10634 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10635 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10636 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10637 const char *name = NULL;
10638 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10639
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10640 if (args && args->type == ARGT_STR) {
10641 name = args->data.str.str;
10642 len = args->data.str.len;
10643 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10644
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10645 CHECK_HTTP_MESSAGE_FIRST();
10646
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10647 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10648 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]10649
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10650 ctx.idx = 0;
10651 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10652 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10653 cnt++;
10654
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10655 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10656 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10657 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10658 return 1;
10659}
10660
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10661/* Fetch an HTTP header's integer value. The integer value is returned. It
10662 * takes a mandatory argument of type string and an optional one of type int
10663 * to designate a specific occurrence. It returns an unsigned integer, which
10664 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10665 */
10666static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10667smp_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]10668{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10669 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10670
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10671 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10672 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10673 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]10674 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10675
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10676 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10677}
10678
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10679/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10680 * and an optional one of type int to designate a specific occurrence.
10681 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10682 */
10683static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10684smp_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]10685{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10686 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10687
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10688 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10689 if (url2ipv4((char *)smp->data.u.str.str, &smp->data.u.ipv4)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10690 smp->data.type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10691 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10692 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10693 struct chunk *temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10694 if (smp->data.u.str.len < temp->size - 1) {
10695 memcpy(temp->str, smp->data.u.str.str, smp->data.u.str.len);
10696 temp->str[smp->data.u.str.len] = '\0';
10697 if (inet_pton(AF_INET6, temp->str, &smp->data.u.ipv6)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10698 smp->data.type = SMP_T_IPV6;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10699 break;
10700 }
10701 }
10702 }
10703
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10704 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10705 if (!(smp->flags & SMP_F_NOT_LAST))
10706 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10707 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10708 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10709}
10710
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10711/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10712 * the first '/' after the possible hostname, and ends before the possible '?'.
10713 */
10714static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10715smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10716{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10717 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10718 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10719
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10720 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10721
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10722 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10723 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]10724 ptr = http_get_path(txn);
10725 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10726 return 0;
10727
10728 /* OK, we got the '/' ! */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10729 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10730 smp->data.u.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10731
10732 while (ptr < end && *ptr != '?')
10733 ptr++;
10734
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10735 smp->data.u.str.len = ptr - smp->data.u.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10736 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10737 return 1;
10738}
10739
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10740/* This produces a concatenation of the first occurrence of the Host header
10741 * followed by the path component if it begins with a slash ('/'). This means
10742 * that '*' will not be added, resulting in exactly the first Host entry.
10743 * If no Host header is found, then the path is returned as-is. The returned
10744 * 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]10745 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10746 */
10747static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10748smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10749{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10750 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10751 char *ptr, *end, *beg;
10752 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10753 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10754
10755 CHECK_HTTP_MESSAGE_FIRST();
10756
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10757 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10758 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10759 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]10760 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10761
10762 /* 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]10763 temp = get_trash_chunk();
10764 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10765 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10766 smp->data.u.str.str = temp->str;
10767 smp->data.u.str.len = ctx.vlen;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10768
10769 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10770 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]10771 beg = http_get_path(txn);
10772 if (!beg)
10773 beg = end;
10774
10775 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10776
10777 if (beg < ptr && *beg == '/') {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10778 memcpy(smp->data.u.str.str + smp->data.u.str.len, beg, ptr - beg);
10779 smp->data.u.str.len += ptr - beg;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10780 }
10781
10782 smp->flags = SMP_F_VOL_1ST;
10783 return 1;
10784}
10785
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10786/* This produces a 32-bit hash of the concatenation of the first occurrence of
10787 * the Host header followed by the path component if it begins with a slash ('/').
10788 * This means that '*' will not be added, resulting in exactly the first Host
10789 * 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]10790 * is hashed using the path hash followed by a full avalanche hash and provides a
10791 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10792 * high-traffic sites without having to store whole paths.
10793 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10794int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10795smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10796{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10797 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10798 struct hdr_ctx ctx;
10799 unsigned int hash = 0;
10800 char *ptr, *beg, *end;
10801 int len;
10802
10803 CHECK_HTTP_MESSAGE_FIRST();
10804
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10805 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10806 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10807 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]10808 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10809 ptr = ctx.line + ctx.val;
10810 len = ctx.vlen;
10811 while (len--)
10812 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10813 }
10814
10815 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10816 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]10817 beg = http_get_path(txn);
10818 if (!beg)
10819 beg = end;
10820
10821 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10822
10823 if (beg < ptr && *beg == '/') {
10824 while (beg < ptr)
10825 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10826 }
10827 hash = full_hash(hash);
10828
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10829 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10830 smp->data.u.sint = hash;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10831 smp->flags = SMP_F_VOL_1ST;
10832 return 1;
10833}
10834
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10835/* 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]10836 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10837 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10838 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10839 * that in environments where IPv6 is insignificant, truncating the output to
10840 * 8 bytes would still work.
10841 */
10842static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10843smp_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]10844{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10845 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10846 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10847
10848 if (!cli_conn)
10849 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10850
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10851 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10852 return 0;
10853
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10854 temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10855 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10856 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10857
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10858 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10859 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10860 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]10861 temp->len += 4;
10862 break;
10863 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10864 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]10865 temp->len += 16;
10866 break;
10867 default:
10868 return 0;
10869 }
10870
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10871 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10872 smp->data.type = SMP_T_BIN;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10873 return 1;
10874}
10875
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10876/* Extracts the query string, which comes after the question mark '?'. If no
10877 * question mark is found, nothing is returned. Otherwise it returns a sample
10878 * of type string carrying the whole query string.
10879 */
10880static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10881smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10882{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10883 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10884 char *ptr, *end;
10885
10886 CHECK_HTTP_MESSAGE_FIRST();
10887
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10888 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10889 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
10890 end = ptr + txn->req.sl.rq.u_l;
10891
10892 /* look up the '?' */
10893 do {
10894 if (ptr == end)
10895 return 0;
10896 } while (*ptr++ != '?');
10897
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10898 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10899 smp->data.u.str.str = ptr;
10900 smp->data.u.str.len = end - ptr;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10901 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
10902 return 1;
10903}
10904
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10905static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10906smp_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]10907{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10908 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10909 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10910 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10911
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10912 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10913
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10914 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10915 smp->data.u.sint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10916 return 1;
10917}
10918
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10919/* return a valid test if the current request is the first one on the connection */
10920static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10921smp_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]10922{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10923 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10924 smp->data.u.sint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10925 return 1;
10926}
10927
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10928/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10929static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10930smp_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]10931{
10932
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10933 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10934 return 0;
10935
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10936 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10937
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10938 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10939 return 0;
10940
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10941 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10942 smp->data.u.sint = check_user(args->data.usr, smp->strm->txn->auth.user,
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10943 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10944 return 1;
10945}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10946
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10947/* Accepts exactly 1 argument of type userlist */
10948static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10949smp_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]10950{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10951 if (!args || args->type != ARGT_USR)
10952 return 0;
10953
10954 CHECK_HTTP_MESSAGE_FIRST();
10955
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10956 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10957 return 0;
10958
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10959 /* if the user does not belong to the userlist or has a wrong password,
10960 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10961 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10962 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10963 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
10964 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10965 return 0;
10966
10967 /* pat_match_auth() will need the user list */
10968 smp->ctx.a[0] = args->data.usr;
10969
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10970 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10971 smp->flags = SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10972 smp->data.u.str.str = smp->strm->txn->auth.user;
10973 smp->data.u.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10974
10975 return 1;
10976}
10977
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10978/* Try to find the next occurrence of a cookie name in a cookie header value.
10979 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10980 * the cookie value is returned into *value and *value_l, and the function
10981 * returns a pointer to the next pointer to search from if the value was found.
10982 * Otherwise if the cookie was not found, NULL is returned and neither value
10983 * nor value_l are touched. The input <hdr> string should first point to the
10984 * header's value, and the <hdr_end> pointer must point to the first character
10985 * not part of the value. <list> must be non-zero if value may represent a list
10986 * of values (cookie headers). This makes it faster to abort parsing when no
10987 * list is expected.
10988 */
David Carlier4686f792015-09-25 14:10:50 +0100[diff] [blame]10989char *
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10990extract_cookie_value(char *hdr, const char *hdr_end,
10991 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10992 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10993{
10994 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10995 char *next;
10996
10997 /* we search at least a cookie name followed by an equal, and more
10998 * generally something like this :
10999 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
11000 */
11001 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
11002 /* Iterate through all cookies on this line */
11003
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11004 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11005 att_beg++;
11006
11007 /* find att_end : this is the first character after the last non
11008 * space before the equal. It may be equal to hdr_end.
11009 */
11010 equal = att_end = att_beg;
11011
11012 while (equal < hdr_end) {
11013 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
11014 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11015 if (HTTP_IS_SPHT(*equal++))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11016 continue;
11017 att_end = equal;
11018 }
11019
11020 /* here, <equal> points to '=', a delimitor or the end. <att_end>
11021 * is between <att_beg> and <equal>, both may be identical.
11022 */
11023
11024 /* look for end of cookie if there is an equal sign */
11025 if (equal < hdr_end && *equal == '=') {
11026 /* look for the beginning of the value */
11027 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11028 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11029 val_beg++;
11030
11031 /* find the end of the value, respecting quotes */
11032 next = find_cookie_value_end(val_beg, hdr_end);
11033
11034 /* make val_end point to the first white space or delimitor after the value */
11035 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11036 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11037 val_end--;
11038 } else {
11039 val_beg = val_end = next = equal;
11040 }
11041
11042 /* We have nothing to do with attributes beginning with '$'. However,
11043 * they will automatically be removed if a header before them is removed,
11044 * since they're supposed to be linked together.
11045 */
11046 if (*att_beg == '$')
11047 continue;
11048
11049 /* Ignore cookies with no equal sign */
11050 if (equal == next)
11051 continue;
11052
11053 /* Now we have the cookie name between att_beg and att_end, and
11054 * its value between val_beg and val_end.
11055 */
11056
11057 if (att_end - att_beg == cookie_name_l &&
11058 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
11059 /* let's return this value and indicate where to go on from */
11060 *value = val_beg;
11061 *value_l = val_end - val_beg;
11062 return next + 1;
11063 }
11064
11065 /* Set-Cookie headers only have the name in the first attr=value part */
11066 if (!list)
11067 break;
11068 }
11069
11070 return NULL;
11071}
11072
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11073/* Fetch a captured HTTP request header. The index is the position of
11074 * the "capture" option in the configuration file
11075 */
11076static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11077smp_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]11078{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11079 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11080 int idx;
11081
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11082 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11083 return 0;
11084
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11085 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11086
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11087 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]11088 return 0;
11089
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11090 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11091 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11092 smp->data.u.str.str = smp->strm->req_cap[idx];
11093 smp->data.u.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11094
11095 return 1;
11096}
11097
11098/* Fetch a captured HTTP response header. The index is the position of
11099 * the "capture" option in the configuration file
11100 */
11101static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11102smp_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]11103{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11104 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11105 int idx;
11106
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11107 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11108 return 0;
11109
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11110 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11111
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11112 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]11113 return 0;
11114
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11115 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11116 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11117 smp->data.u.str.str = smp->strm->res_cap[idx];
11118 smp->data.u.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11119
11120 return 1;
11121}
11122
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11123/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
11124static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11125smp_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]11126{
11127 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11128 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11129 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11130
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11131 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11132 return 0;
11133
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11134 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11135
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11136 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11137 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11138
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11139 temp = get_trash_chunk();
11140 temp->str = txn->uri;
11141 temp->len = ptr - txn->uri;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11142 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11143 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11144 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11145
11146 return 1;
11147
11148}
11149
11150/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
11151static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11152smp_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]11153{
11154 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11155 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11156 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11157
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11158 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11159 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11160
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11161 ptr = txn->uri;
11162
11163 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11164 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11165
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11166 if (!*ptr)
11167 return 0;
11168
11169 ptr++; /* skip the space */
11170
11171 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11172 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11173 if (!ptr)
11174 return 0;
11175 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
11176 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11177
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11178 smp->data.u.str = *temp;
11179 smp->data.u.str.len = ptr - temp->str;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11180 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11181 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11182
11183 return 1;
11184}
11185
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11186/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
11187 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11188 */
11189static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11190smp_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]11191{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11192 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11193
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11194 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11195 return 0;
11196
11197 if (txn->req.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11198 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11199 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11200 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11201
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11202 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11203 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11204 smp->flags = SMP_F_CONST;
11205 return 1;
11206
11207}
11208
11209/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11210 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11211 */
11212static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11213smp_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]11214{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11215 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11216
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11217 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11218 return 0;
11219
11220 if (txn->rsp.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11221 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11222 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11223 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11224
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11225 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11226 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11227 smp->flags = SMP_F_CONST;
11228 return 1;
11229
11230}
11231
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11232
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11233/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11234 * 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]11235 * 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]11236 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11237 * 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]11238 * Accepts exactly 1 argument of type string. If the input options indicate
11239 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11240 * The returned sample is of type CSTR. Can be used to parse cookies in other
11241 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11242 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11243int 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]11244{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11245 struct http_txn *txn;
11246 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11247 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11248 const struct http_msg *msg;
11249 const char *hdr_name;
11250 int hdr_name_len;
11251 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11252 int occ = 0;
11253 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11254
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11255 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11256 return 0;
11257
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11258 if (!ctx) {
11259 /* first call */
11260 ctx = &static_hdr_ctx;
11261 ctx->idx = 0;
11262 smp->ctx.a[2] = ctx;
11263 }
11264
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11265 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11266
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11267 txn = smp->strm->txn;
11268 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11269
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11270 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11271 msg = &txn->req;
11272 hdr_name = "Cookie";
11273 hdr_name_len = 6;
11274 } else {
11275 msg = &txn->rsp;
11276 hdr_name = "Set-Cookie";
11277 hdr_name_len = 10;
11278 }
11279
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11280 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11281 /* no explicit occurrence and single fetch => last cookie by default */
11282 occ = -1;
11283
11284 /* OK so basically here, either we want only one value and it's the
11285 * last one, or we want to iterate over all of them and we fetch the
11286 * next one.
11287 */
11288
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11289 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11290 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11291 /* search for the header from the beginning, we must first initialize
11292 * the search parameters.
11293 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11294 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11295 ctx->idx = 0;
11296 }
11297
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11298 smp->flags |= SMP_F_VOL_HDR;
11299
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11300 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11301 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11302 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11303 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11304 goto out;
11305
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11306 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11307 continue;
11308
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11309 smp->ctx.a[0] = ctx->line + ctx->val;
11310 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11311 }
11312
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11313 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11314 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11315 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]11316 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11317 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11318 &smp->data.u.str.str,
11319 &smp->data.u.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11320 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11321 found = 1;
11322 if (occ >= 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11323 /* one value was returned into smp->data.u.str.{str,len} */
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11324 smp->flags |= SMP_F_NOT_LAST;
11325 return 1;
11326 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11327 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11328 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11329 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11330 /* all cookie headers and values were scanned. If we're looking for the
11331 * last occurrence, we may return it now.
11332 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11333 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11334 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11335 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11336}
11337
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11338/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11339 * 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]11340 * multiple cookies may be parsed on the same line. The returned sample is of
11341 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11342 */
11343static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11344smp_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]11345{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11346 struct http_txn *txn;
11347 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11348 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11349 const struct http_msg *msg;
11350 const char *hdr_name;
11351 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11352 int cnt;
11353 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11354 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11355
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11356 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11357 return 0;
11358
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11359 CHECK_HTTP_MESSAGE_FIRST();
11360
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11361 txn = smp->strm->txn;
11362 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11363
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11364 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11365 msg = &txn->req;
11366 hdr_name = "Cookie";
11367 hdr_name_len = 6;
11368 } else {
11369 msg = &txn->rsp;
11370 hdr_name = "Set-Cookie";
11371 hdr_name_len = 10;
11372 }
11373
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11374 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11375 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11376 ctx.idx = 0;
11377 cnt = 0;
11378
11379 while (1) {
11380 /* Note: val_beg == NULL every time we need to fetch a new header */
11381 if (!val_beg) {
11382 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11383 break;
11384
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11385 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11386 continue;
11387
11388 val_beg = ctx.line + ctx.val;
11389 val_end = val_beg + ctx.vlen;
11390 }
11391
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11392 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11393 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11394 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11395 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11396 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11397 &smp->data.u.str.str,
11398 &smp->data.u.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11399 cnt++;
11400 }
11401 }
11402
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11403 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11404 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11405 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11406 return 1;
11407}
11408
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11409/* Fetch an cookie's integer value. The integer value is returned. It
11410 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11411 */
11412static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11413smp_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]11414{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11415 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11416
11417 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11418 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11419 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]11420 }
11421
11422 return ret;
11423}
11424
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11425/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11426/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11427/************************************************************************/
11428
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11429/*
11430 * Given a path string and its length, find the position of beginning of the
11431 * query string. Returns NULL if no query string is found in the path.
11432 *
11433 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11434 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11435 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11436 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11437static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11438{
11439 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11440
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11441 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11442 return p ? p + 1 : NULL;
11443}
11444
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11445static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11446{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11447 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11448}
11449
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11450/* after increasing a pointer value, it can exceed the first buffer
11451 * size. This function transform the value of <ptr> according with
11452 * the expected position. <chunks> is an array of the one or two
11453 * avalaible chunks. The first value is the start of the first chunk,
11454 * the second value if the end+1 of the first chunks. The third value
11455 * is NULL or the start of the second chunk and the fourth value is
11456 * the end+1 of the second chunk. The function returns 1 if does a
11457 * wrap, else returns 0.
11458 */
11459static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11460{
11461 if (*ptr < chunks[1])
11462 return 0;
11463 if (!chunks[2])
11464 return 0;
11465 *ptr = chunks[2] + ( *ptr - chunks[1] );
11466 return 1;
11467}
11468
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11469/*
11470 * Given a url parameter, find the starting position of the first occurence,
11471 * or NULL if the parameter is not found.
11472 *
11473 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11474 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11475 *
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11476 * Warning: this function returns a pointer that can point to the first chunk
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11477 * or the second chunk. The caller must be check the position before using the
11478 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11479 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11480static const char *
11481find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11482 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11483 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11484{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11485 const char *pos, *last, *equal;
11486 const char **bufs = chunks;
11487 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11488
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11489
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11490 pos = bufs[0];
11491 last = bufs[1];
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11492 while (pos < last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11493 /* Check the equal. */
11494 equal = pos + url_param_name_l;
11495 if (fix_pointer_if_wrap(chunks, &equal)) {
11496 if (equal >= chunks[3])
11497 return NULL;
11498 } else {
11499 if (equal >= chunks[1])
11500 return NULL;
11501 }
11502 if (*equal == '=') {
11503 if (pos + url_param_name_l > last) {
11504 /* process wrap case, we detect a wrap. In this case, the
11505 * comparison is performed in two parts.
11506 */
11507
11508 /* This is the end, we dont have any other chunk. */
11509 if (bufs != chunks || !bufs[2])
11510 return NULL;
11511
11512 /* Compute the length of each part of the comparison. */
11513 l1 = last - pos;
11514 l2 = url_param_name_l - l1;
11515
11516 /* The second buffer is too short to contain the compared string. */
11517 if (bufs[2] + l2 > bufs[3])
11518 return NULL;
11519
11520 if (memcmp(pos, url_param_name, l1) == 0 &&
11521 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11522 return pos;
11523
11524 /* Perform wrapping and jump the string who fail the comparison. */
11525 bufs += 2;
11526 pos = bufs[0] + l2;
11527 last = bufs[1];
11528
11529 } else {
11530 /* process a simple comparison. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11531 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11532 return pos;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11533 pos += url_param_name_l + 1;
11534 if (fix_pointer_if_wrap(chunks, &pos))
11535 last = bufs[2];
11536 }
11537 }
11538
11539 while (1) {
11540 /* Look for the next delimiter. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11541 while (pos < last && !is_param_delimiter(*pos, delim))
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11542 pos++;
11543 if (pos < last)
11544 break;
11545 /* process buffer wrapping. */
11546 if (bufs != chunks || !bufs[2])
11547 return NULL;
11548 bufs += 2;
11549 pos = bufs[0];
11550 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11551 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11552 pos++;
11553 }
11554 return NULL;
11555}
11556
11557/*
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11558 * Given a url parameter name and a query string, find the next value.
11559 * An empty url_param_name matches the first available parameter.
11560 * If the parameter is found, 1 is returned and *vstart / *vend are updated to
11561 * respectively provide a pointer to the value and its end.
11562 * Otherwise, 0 is returned and vstart/vend are not modified.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11563 */
11564static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11565find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11566 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11567 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11568{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11569 const char *arg_start, *qs_end;
11570 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11571
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11572 arg_start = chunks[0];
11573 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11574 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11575 /* Looks for an argument name. */
11576 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11577 url_param_name, url_param_name_l,
11578 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11579 /* Check for wrapping. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11580 if (arg_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11581 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11582 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11583 if (!arg_start)
11584 return 0;
11585
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11586 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11587 while (1) {
11588 /* looks for the first argument. */
11589 value_start = memchr(arg_start, '=', qs_end - arg_start);
11590 if (!value_start) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11591 /* Check for wrapping. */
11592 if (arg_start >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11593 arg_start < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11594 chunks[2]) {
11595 arg_start = chunks[2];
11596 qs_end = chunks[3];
11597 continue;
11598 }
11599 return 0;
11600 }
11601 break;
11602 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11603 value_start++;
11604 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11605 else {
11606 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11607 value_start = arg_start + url_param_name_l + 1;
11608
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11609 /* Check for pointer wrapping. */
11610 if (fix_pointer_if_wrap(chunks, &value_start)) {
11611 /* Update the end pointer. */
11612 qs_end = chunks[3];
11613
11614 /* Check for overflow. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11615 if (value_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11616 return 0;
11617 }
11618 }
11619
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11620 value_end = value_start;
11621
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11622 while (1) {
11623 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11624 value_end++;
11625 if (value_end < qs_end)
11626 break;
11627 /* process buffer wrapping. */
11628 if (value_end >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11629 value_end < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11630 chunks[2]) {
11631 value_end = chunks[2];
11632 qs_end = chunks[3];
11633 continue;
11634 }
11635 break;
11636 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11637
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11638 *vstart = value_start;
11639 *vend = value_end;
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11640 return 1;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11641}
11642
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11643/* This scans a URL-encoded query string. It takes an optionally wrapping
11644 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11645 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11646 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11647 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11648static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11649smp_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]11650{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11651 const char *vstart, *vend;
11652 struct chunk *temp;
11653 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11654
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11655 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11656 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11657 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11658 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11659 return 0;
11660
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11661 /* Create sample. If the value is contiguous, return the pointer as CONST,
11662 * if the value is wrapped, copy-it in a buffer.
11663 */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11664 smp->data.type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11665 if (chunks[2] &&
11666 vstart >= chunks[0] && vstart <= chunks[1] &&
11667 vend >= chunks[2] && vend <= chunks[3]) {
11668 /* Wrapped case. */
11669 temp = get_trash_chunk();
11670 memcpy(temp->str, vstart, chunks[1] - vstart);
11671 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11672 smp->data.u.str.str = temp->str;
11673 smp->data.u.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11674 } else {
11675 /* Contiguous case. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11676 smp->data.u.str.str = (char *)vstart;
11677 smp->data.u.str.len = vend - vstart;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11678 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11679 }
11680
11681 /* Update context, check wrapping. */
11682 chunks[0] = vend;
11683 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11684 chunks[1] = chunks[3];
11685 chunks[2] = NULL;
11686 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11687
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11688 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11689 smp->flags |= SMP_F_NOT_LAST;
11690
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11691 return 1;
11692}
11693
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11694/* This function iterates over each parameter of the query string. It uses
11695 * 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]11696 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11697 * An optional parameter name is passed in args[0], otherwise any parameter is
11698 * considered. It supports an optional delimiter argument for the beginning of
11699 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11700 */
11701static int
11702smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11703{
11704 struct http_msg *msg;
11705 char delim = '?';
11706 const char *name;
11707 int name_len;
11708
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11709 if (!args ||
11710 (args[0].type && args[0].type != ARGT_STR) ||
11711 (args[1].type && args[1].type != ARGT_STR))
11712 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11713
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11714 name = "";
11715 name_len = 0;
11716 if (args->type == ARGT_STR) {
11717 name = args->data.str.str;
11718 name_len = args->data.str.len;
11719 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11720
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11721 if (args[1].type)
11722 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11723
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11724 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11725 CHECK_HTTP_MESSAGE_FIRST();
11726
11727 msg = &smp->strm->txn->req;
11728
11729 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11730 msg->sl.rq.u_l, delim);
11731 if (!smp->ctx.a[0])
11732 return 0;
11733
11734 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]11735
11736 /* Assume that the context is filled with NULL pointer
11737 * before the first call.
11738 * smp->ctx.a[2] = NULL;
11739 * smp->ctx.a[3] = NULL;
11740 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11741 }
11742
11743 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11744}
11745
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11746/* This function iterates over each parameter of the body. This requires
11747 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11748 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11749 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11750 * optional second part if the body wraps at the end of the buffer. An optional
11751 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11752 */
11753static int
11754smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11755{
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11756 struct http_msg *msg;
11757 unsigned long len;
11758 unsigned long block1;
11759 char *body;
11760 const char *name;
11761 int name_len;
11762
11763 if (!args || (args[0].type && args[0].type != ARGT_STR))
11764 return 0;
11765
11766 name = "";
11767 name_len = 0;
11768 if (args[0].type == ARGT_STR) {
11769 name = args[0].data.str.str;
11770 name_len = args[0].data.str.len;
11771 }
11772
11773 if (!smp->ctx.a[0]) { // first call, find the query string
11774 CHECK_HTTP_MESSAGE_FIRST();
11775
11776 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11777 msg = &smp->strm->txn->req;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11778 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11779 msg = &smp->strm->txn->rsp;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11780
11781 len = http_body_bytes(msg);
11782 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11783
11784 block1 = len;
11785 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11786 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11787
11788 if (block1 == len) {
11789 /* buffer is not wrapped (or empty) */
11790 smp->ctx.a[0] = body;
11791 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11792
11793 /* Assume that the context is filled with NULL pointer
11794 * before the first call.
11795 * smp->ctx.a[2] = NULL;
11796 * smp->ctx.a[3] = NULL;
11797 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11798 }
11799 else {
11800 /* buffer is wrapped, we need to defragment it */
11801 smp->ctx.a[0] = body;
11802 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11803 smp->ctx.a[2] = msg->chn->buf->data;
11804 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11805 }
11806 }
11807 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11808}
11809
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11810/* Return the signed integer value for the specified url parameter (see url_param
11811 * above).
11812 */
11813static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11814smp_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]11815{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11816 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11817
11818 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11819 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11820 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]11821 }
11822
11823 return ret;
11824}
11825
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11826/* This produces a 32-bit hash of the concatenation of the first occurrence of
11827 * the Host header followed by the path component if it begins with a slash ('/').
11828 * This means that '*' will not be added, resulting in exactly the first Host
11829 * entry. If no Host header is found, then the path is used. The resulting value
11830 * is hashed using the url hash followed by a full avalanche hash and provides a
11831 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11832 * high-traffic sites without having to store whole paths.
11833 * this differs from the base32 functions in that it includes the url parameters
11834 * as well as the path
11835 */
11836static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11837smp_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]11838{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11839 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11840 struct hdr_ctx ctx;
11841 unsigned int hash = 0;
11842 char *ptr, *beg, *end;
11843 int len;
11844
11845 CHECK_HTTP_MESSAGE_FIRST();
11846
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11847 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11848 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11849 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]11850 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11851 ptr = ctx.line + ctx.val;
11852 len = ctx.vlen;
11853 while (len--)
11854 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11855 }
11856
11857 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11858 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]11859 beg = http_get_path(txn);
11860 if (!beg)
11861 beg = end;
11862
11863 for (ptr = beg; ptr < end ; ptr++);
11864
11865 if (beg < ptr && *beg == '/') {
11866 while (beg < ptr)
11867 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11868 }
11869 hash = full_hash(hash);
11870
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11871 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11872 smp->data.u.sint = hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11873 smp->flags = SMP_F_VOL_1ST;
11874 return 1;
11875}
11876
11877/* This concatenates the source address with the 32-bit hash of the Host and
11878 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11879 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11880 * on the source address length. The URL hash is stored before the address so
11881 * that in environments where IPv6 is insignificant, truncating the output to
11882 * 8 bytes would still work.
11883 */
11884static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11885smp_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]11886{
11887 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11888 struct connection *cli_conn = objt_conn(smp->sess->origin);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11889
Dragan Dosendb5af612016-06-16 11:23:01 +0200[diff] [blame]11890 if (!cli_conn)
11891 return 0;
11892
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11893 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11894 return 0;
11895
11896 temp = get_trash_chunk();
Dragan Dosene5f41332016-06-16 11:08:08 +0200[diff] [blame]11897 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
11898 temp->len += sizeof(unsigned int);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11899
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11900 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11901 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11902 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]11903 temp->len += 4;
11904 break;
11905 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11906 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]11907 temp->len += 16;
11908 break;
11909 default:
11910 return 0;
11911 }
11912
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11913 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11914 smp->data.type = SMP_T_BIN;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11915 return 1;
11916}
11917
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11918/* This function is used to validate the arguments passed to any "hdr" fetch
11919 * keyword. These keywords support an optional positive or negative occurrence
11920 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11921 * is assumed that the types are already the correct ones. Returns 0 on error,
11922 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11923 * error message in case of error, that the caller is responsible for freeing.
11924 * The initial location must either be freeable or NULL.
11925 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]11926int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11927{
11928 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11929 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11930 return 0;
11931 }
11932 return 1;
11933}
11934
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11935/* takes an UINT value on input supposed to represent the time since EPOCH,
11936 * adds an optional offset found in args[0] and emits a string representing
11937 * the date in RFC-1123/5322 format.
11938 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11939static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11940{
Cyril Bontéf78d8962016-01-22 19:40:28 +0100[diff] [blame]11941 const char day[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11942 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11943 struct chunk *temp;
11944 struct tm *tm;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11945 /* 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]11946 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11947
11948 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11949 if (args && (args[0].type == ARGT_SINT))
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11950 curr_date += args[0].data.sint;
11951
11952 tm = gmtime(&curr_date);
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +0200[diff] [blame]11953 if (!tm)
11954 return 0;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11955
11956 temp = get_trash_chunk();
11957 temp->len = snprintf(temp->str, temp->size - temp->len,
11958 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11959 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11960 tm->tm_hour, tm->tm_min, tm->tm_sec);
11961
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11962 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11963 smp->data.type = SMP_T_STR;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11964 return 1;
11965}
11966
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11967/* Match language range with language tag. RFC2616 14.4:
11968 *
11969 * A language-range matches a language-tag if it exactly equals
11970 * the tag, or if it exactly equals a prefix of the tag such
11971 * that the first tag character following the prefix is "-".
11972 *
11973 * Return 1 if the strings match, else return 0.
11974 */
11975static inline int language_range_match(const char *range, int range_len,
11976 const char *tag, int tag_len)
11977{
11978 const char *end = range + range_len;
11979 const char *tend = tag + tag_len;
11980 while (range < end) {
11981 if (*range == '-' && tag == tend)
11982 return 1;
11983 if (*range != *tag || tag == tend)
11984 return 0;
11985 range++;
11986 tag++;
11987 }
11988 /* Return true only if the last char of the tag is matched. */
11989 return tag == tend;
11990}
11991
11992/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11993static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11994{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11995 const char *al = smp->data.u.str.str;
11996 const char *end = al + smp->data.u.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11997 const char *token;
11998 int toklen;
11999 int qvalue;
12000 const char *str;
12001 const char *w;
12002 int best_q = 0;
12003
12004 /* Set the constant to the sample, because the output of the
12005 * function will be peek in the constant configuration string.
12006 */
12007 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12008 smp->data.u.str.size = 0;
12009 smp->data.u.str.str = "";
12010 smp->data.u.str.len = 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12011
12012 /* Parse the accept language */
12013 while (1) {
12014
12015 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12016 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12017 al++;
12018 if (al >= end)
12019 break;
12020
12021 /* Start of the fisrt word. */
12022 token = al;
12023
12024 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12025 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12026 al++;
12027 if (al == token)
12028 goto expect_comma;
12029
12030 /* Length of the token. */
12031 toklen = al - token;
12032 qvalue = 1000;
12033
12034 /* Check if the token exists in the list. If the token not exists,
12035 * jump to the next token.
12036 */
12037 str = args[0].data.str.str;
12038 w = str;
12039 while (1) {
12040 if (*str == ';' || *str == '\0') {
12041 if (language_range_match(token, toklen, w, str-w))
12042 goto look_for_q;
12043 if (*str == '\0')
12044 goto expect_comma;
12045 w = str + 1;
12046 }
12047 str++;
12048 }
12049 goto expect_comma;
12050
12051look_for_q:
12052
12053 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12054 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12055 al++;
12056 if (al >= end)
12057 goto process_value;
12058
12059 /* If ',' is found, process the result */
12060 if (*al == ',')
12061 goto process_value;
12062
12063 /* If the character is different from ';', look
12064 * for the end of the header part in best effort.
12065 */
12066 if (*al != ';')
12067 goto expect_comma;
12068
12069 /* Assumes that the char is ';', now expect "q=". */
12070 al++;
12071
12072 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12073 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12074 al++;
12075 if (al >= end)
12076 goto process_value;
12077
12078 /* Expect 'q'. If no 'q', continue in best effort */
12079 if (*al != 'q')
12080 goto process_value;
12081 al++;
12082
12083 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12084 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12085 al++;
12086 if (al >= end)
12087 goto process_value;
12088
12089 /* Expect '='. If no '=', continue in best effort */
12090 if (*al != '=')
12091 goto process_value;
12092 al++;
12093
12094 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12095 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12096 al++;
12097 if (al >= end)
12098 goto process_value;
12099
12100 /* Parse the q value. */
12101 qvalue = parse_qvalue(al, &al);
12102
12103process_value:
12104
12105 /* If the new q value is the best q value, then store the associated
12106 * language in the response. If qvalue is the biggest value (1000),
12107 * break the process.
12108 */
12109 if (qvalue > best_q) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12110 smp->data.u.str.str = (char *)w;
12111 smp->data.u.str.len = str - w;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12112 if (qvalue >= 1000)
12113 break;
12114 best_q = qvalue;
12115 }
12116
12117expect_comma:
12118
12119 /* Expect comma or end. If the end is detected, quit the loop. */
12120 while (al < end && *al != ',')
12121 al++;
12122 if (al >= end)
12123 break;
12124
12125 /* Comma is found, jump it and restart the analyzer. */
12126 al++;
12127 }
12128
12129 /* Set default value if required. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12130 if (smp->data.u.str.len == 0 && args[1].type == ARGT_STR) {
12131 smp->data.u.str.str = args[1].data.str.str;
12132 smp->data.u.str.len = args[1].data.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12133 }
12134
12135 /* Return true only if a matching language was found. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12136 return smp->data.u.str.len != 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12137}
12138
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12139/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12140static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12141{
12142 /* If the constant flag is set or if not size is avalaible at
12143 * the end of the buffer, copy the string in other buffer
12144 * before decoding.
12145 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12146 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]12147 struct chunk *str = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12148 memcpy(str->str, smp->data.u.str.str, smp->data.u.str.len);
12149 smp->data.u.str.str = str->str;
12150 smp->data.u.str.size = str->size;
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12151 smp->flags &= ~SMP_F_CONST;
12152 }
12153
12154 /* Add final \0 required by url_decode(), and convert the input string. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12155 smp->data.u.str.str[smp->data.u.str.len] = '\0';
12156 smp->data.u.str.len = url_decode(smp->data.u.str.str);
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12157 return 1;
12158}
12159
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12160static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
12161{
12162 struct proxy *fe = strm_fe(smp->strm);
12163 int idx, i;
12164 struct cap_hdr *hdr;
12165 int len;
12166
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12167 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12168 return 0;
12169
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12170 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12171
12172 /* Check the availibity of the capture id. */
12173 if (idx > fe->nb_req_cap - 1)
12174 return 0;
12175
12176 /* Look for the original configuration. */
12177 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
12178 hdr != NULL && i != idx ;
12179 i--, hdr = hdr->next);
12180 if (!hdr)
12181 return 0;
12182
12183 /* check for the memory allocation */
12184 if (smp->strm->req_cap[hdr->index] == NULL)
12185 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
12186 if (smp->strm->req_cap[hdr->index] == NULL)
12187 return 0;
12188
12189 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12190 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12191 if (len > hdr->len)
12192 len = hdr->len;
12193
12194 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12195 memcpy(smp->strm->req_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12196 smp->strm->req_cap[idx][len] = '\0';
12197
12198 return 1;
12199}
12200
12201static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
12202{
12203 struct proxy *fe = strm_fe(smp->strm);
12204 int idx, i;
12205 struct cap_hdr *hdr;
12206 int len;
12207
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12208 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12209 return 0;
12210
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12211 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12212
12213 /* Check the availibity of the capture id. */
12214 if (idx > fe->nb_rsp_cap - 1)
12215 return 0;
12216
12217 /* Look for the original configuration. */
12218 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12219 hdr != NULL && i != idx ;
12220 i--, hdr = hdr->next);
12221 if (!hdr)
12222 return 0;
12223
12224 /* check for the memory allocation */
12225 if (smp->strm->res_cap[hdr->index] == NULL)
12226 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
12227 if (smp->strm->res_cap[hdr->index] == NULL)
12228 return 0;
12229
12230 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12231 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12232 if (len > hdr->len)
12233 len = hdr->len;
12234
12235 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12236 memcpy(smp->strm->res_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12237 smp->strm->res_cap[idx][len] = '\0';
12238
12239 return 1;
12240}
12241
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12242/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12243 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12244 * the relevant part of the request line accordingly. Then it updates various
12245 * pointers to the next elements which were moved, and the total buffer length.
12246 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12247 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12248 * error, though this can be revisited when this code is finally exploited.
12249 *
12250 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12251 * query string and 3 to replace uri.
12252 *
12253 * In query string case, the mark question '?' must be set at the start of the
12254 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12255 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12256int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12257 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12258{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12259 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12260 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12261 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12262 int delta;
12263
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12264 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12265 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12266 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12267 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12268
12269 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12270 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12271 txn->req.sl.rq.m_l += delta;
12272 txn->req.sl.rq.u += delta;
12273 txn->req.sl.rq.v += delta;
12274 break;
12275
12276 case 1: // path
12277 cur_ptr = http_get_path(txn);
12278 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12279 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12280
12281 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12282 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]12283 cur_end++;
12284
12285 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12286 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12287 txn->req.sl.rq.u_l += delta;
12288 txn->req.sl.rq.v += delta;
12289 break;
12290
12291 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12292 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12293 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12294 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12295 while (cur_ptr < cur_end && *cur_ptr != '?')
12296 cur_ptr++;
12297
12298 /* skip the question mark or indicate that we must insert it
12299 * (but only if the format string is not empty then).
12300 */
12301 if (cur_ptr < cur_end)
12302 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12303 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12304 offset = 0;
12305
12306 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12307 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12308 txn->req.sl.rq.u_l += delta;
12309 txn->req.sl.rq.v += delta;
12310 break;
12311
12312 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12313 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12314 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12315
12316 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12317 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12318 txn->req.sl.rq.u_l += delta;
12319 txn->req.sl.rq.v += delta;
12320 break;
12321
12322 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12323 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12324 }
12325
12326 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12327 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12328 txn->req.sl.rq.l += delta;
12329 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12330 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12331 return 0;
12332}
12333
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12334/* This function replace the HTTP status code and the associated message. The
12335 * variable <status> contains the new status code. This function never fails.
12336 */
12337void http_set_status(unsigned int status, struct stream *s)
12338{
12339 struct http_txn *txn = s->txn;
12340 char *cur_ptr, *cur_end;
12341 int delta;
12342 char *res;
12343 int c_l;
12344 const char *msg;
12345 int msg_len;
12346
12347 chunk_reset(&trash);
12348
12349 res = ultoa_o(status, trash.str, trash.size);
12350 c_l = res - trash.str;
12351
12352 trash.str[c_l] = ' ';
12353 trash.len = c_l + 1;
12354
12355 msg = get_reason(status);
12356 msg_len = strlen(msg);
12357
12358 strncpy(&trash.str[trash.len], msg, trash.size - trash.len);
12359 trash.len += msg_len;
12360
12361 cur_ptr = s->res.buf->p + txn->rsp.sl.st.c;
12362 cur_end = s->res.buf->p + txn->rsp.sl.st.r + txn->rsp.sl.st.r_l;
12363
12364 /* commit changes and adjust message */
12365 delta = buffer_replace2(s->res.buf, cur_ptr, cur_end, trash.str, trash.len);
12366
12367 /* adjust res line offsets and lengths */
12368 txn->rsp.sl.st.r += c_l - txn->rsp.sl.st.c_l;
12369 txn->rsp.sl.st.c_l = c_l;
12370 txn->rsp.sl.st.r_l = msg_len;
12371
12372 delta = trash.len - (cur_end - cur_ptr);
12373 txn->rsp.sl.st.l += delta;
12374 txn->hdr_idx.v[0].len += delta;
12375 http_msg_move_end(&txn->rsp, delta);
12376}
12377
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12378/* This function executes one of the set-{method,path,query,uri} actions. It
12379 * builds a string in the trash from the specified format string. It finds
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12380 * the action to be performed in <http.action>, previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12381 * parse_set_req_line(). The replacement action is excuted by the function
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12382 * http_action_set_req_line(). It always returns ACT_RET_CONT. If an error
12383 * occurs the action is canceled, but the rule processing continue.
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12384 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12385enum act_return http_action_set_req_line(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12386 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12387{
12388 chunk_reset(&trash);
12389
12390 /* If we have to create a query string, prepare a '?'. */
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12391 if (rule->arg.http.action == 2)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12392 trash.str[trash.len++] = '?';
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12393 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]12394
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12395 http_replace_req_line(rule->arg.http.action, trash.str, trash.len, px, s);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12396 return ACT_RET_CONT;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12397}
12398
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12399/* This function is just a compliant action wrapper for "set-status". */
12400enum act_return action_http_set_status(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12401 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12402{
12403 http_set_status(rule->arg.status.code, s);
12404 return ACT_RET_CONT;
12405}
12406
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12407/* parse an http-request action among :
12408 * set-method
12409 * set-path
12410 * set-query
12411 * set-uri
12412 *
12413 * All of them accept a single argument of type string representing a log-format.
12414 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12415 * 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]12416 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12417 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12418enum act_parse_ret parse_set_req_line(const char **args, int *orig_arg, struct proxy *px,
12419 struct act_rule *rule, char **err)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12420{
12421 int cur_arg = *orig_arg;
12422
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12423 rule->action = ACT_CUSTOM;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12424
12425 switch (args[0][4]) {
12426 case 'm' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12427 rule->arg.http.action = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12428 rule->action_ptr = http_action_set_req_line;
12429 break;
12430 case 'p' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12431 rule->arg.http.action = 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12432 rule->action_ptr = http_action_set_req_line;
12433 break;
12434 case 'q' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12435 rule->arg.http.action = 2;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12436 rule->action_ptr = http_action_set_req_line;
12437 break;
12438 case 'u' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12439 rule->arg.http.action = 3;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12440 rule->action_ptr = http_action_set_req_line;
12441 break;
12442 default:
12443 memprintf(err, "internal error: unhandled action '%s'", args[0]);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12444 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12445 }
12446
12447 if (!*args[cur_arg] ||
12448 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12449 memprintf(err, "expects exactly 1 argument <format>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12450 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12451 }
12452
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12453 LIST_INIT(&rule->arg.http.logfmt);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12454 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12455 parse_logformat_string(args[cur_arg], proxy, &rule->arg.http.logfmt, LOG_OPT_HTTP,
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12456 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
12457 proxy->conf.args.file, proxy->conf.args.line);
12458
12459 (*orig_arg)++;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12460 return ACT_RET_PRS_OK;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12461}
12462
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12463/* parse set-status action:
12464 * This action accepts a single argument of type int representing
12465 * an http status code. It returns ACT_RET_PRS_OK on success,
12466 * ACT_RET_PRS_ERR on error.
12467 */
12468enum act_parse_ret parse_http_set_status(const char **args, int *orig_arg, struct proxy *px,
12469 struct act_rule *rule, char **err)
12470{
12471 char *error;
12472
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12473 rule->action = ACT_CUSTOM;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12474 rule->action_ptr = action_http_set_status;
12475
12476 /* Check if an argument is available */
12477 if (!*args[*orig_arg]) {
12478 memprintf(err, "expects exactly 1 argument <status>");
12479 return ACT_RET_PRS_ERR;
12480 }
12481
12482 /* convert status code as integer */
12483 rule->arg.status.code = strtol(args[*orig_arg], &error, 10);
12484 if (*error != '\0' || rule->arg.status.code < 100 || rule->arg.status.code > 999) {
12485 memprintf(err, "expects an integer status code between 100 and 999");
12486 return ACT_RET_PRS_ERR;
12487 }
12488
12489 (*orig_arg)++;
12490 return ACT_RET_PRS_OK;
12491}
12492
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12493/* This function executes the "capture" action. It executes a fetch expression,
12494 * turns the result into a string and puts it in a capture slot. It always
12495 * returns 1. If an error occurs the action is cancelled, but the rule
12496 * processing continues.
12497 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12498enum act_return http_action_req_capture(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12499 struct session *sess, struct stream *s, int flags)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12500{
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12501 struct sample *key;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12502 struct cap_hdr *h = rule->arg.cap.hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12503 char **cap = s->req_cap;
12504 int len;
12505
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12506 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]12507 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12508 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12509
12510 if (cap[h->index] == NULL)
12511 cap[h->index] = pool_alloc2(h->pool);
12512
12513 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12514 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12515
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12516 len = key->data.u.str.len;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12517 if (len > h->len)
12518 len = h->len;
12519
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12520 memcpy(cap[h->index], key->data.u.str.str, len);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12521 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12522 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12523}
12524
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12525/* This function executes the "capture" action and store the result in a
12526 * capture slot if exists. It executes a fetch expression, turns the result
12527 * into a string and puts it in a capture slot. It always returns 1. If an
12528 * error occurs the action is cancelled, but the rule processing continues.
12529 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12530enum 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]12531 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12532{
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12533 struct sample *key;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12534 struct cap_hdr *h;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12535 char **cap = s->req_cap;
12536 struct proxy *fe = strm_fe(s);
12537 int len;
12538 int i;
12539
12540 /* Look for the original configuration. */
12541 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12542 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12543 i--, h = h->next);
12544 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12545 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12546
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12547 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]12548 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12549 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12550
12551 if (cap[h->index] == NULL)
12552 cap[h->index] = pool_alloc2(h->pool);
12553
12554 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12555 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12556
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12557 len = key->data.u.str.len;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12558 if (len > h->len)
12559 len = h->len;
12560
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12561 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12562 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12563 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12564}
12565
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12566/* parse an "http-request capture" action. It takes a single argument which is
12567 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12568 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12569 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12570 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12571enum act_parse_ret parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px,
12572 struct act_rule *rule, char **err)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12573{
12574 struct sample_expr *expr;
12575 struct cap_hdr *hdr;
12576 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12577 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12578
12579 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12580 if (strcmp(args[cur_arg], "if") == 0 ||
12581 strcmp(args[cur_arg], "unless") == 0)
12582 break;
12583
12584 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12585 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12586 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12587 }
12588
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12589 cur_arg = *orig_arg;
12590 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12591 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12592 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12593
12594 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12595 memprintf(err,
12596 "fetch method '%s' extracts information from '%s', none of which is available here",
12597 args[cur_arg-1], sample_src_names(expr->fetch->use));
12598 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12599 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12600 }
12601
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12602 if (!args[cur_arg] || !*args[cur_arg]) {
12603 memprintf(err, "expects 'len or 'id'");
12604 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12605 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12606 }
12607
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12608 if (strcmp(args[cur_arg], "len") == 0) {
12609 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12610
12611 if (!(px->cap & PR_CAP_FE)) {
12612 memprintf(err, "proxy '%s' has no frontend capability", px->id);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12613 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12614 }
12615
12616 proxy->conf.args.ctx = ARGC_CAP;
12617
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12618 if (!args[cur_arg]) {
12619 memprintf(err, "missing length value");
12620 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12621 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12622 }
12623 /* we copy the table name for now, it will be resolved later */
12624 len = atoi(args[cur_arg]);
12625 if (len <= 0) {
12626 memprintf(err, "length must be > 0");
12627 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12628 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12629 }
12630 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12631
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12632 if (!len) {
12633 memprintf(err, "a positive 'len' argument is mandatory");
12634 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12635 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12636 }
12637
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]12638 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12639 hdr->next = px->req_cap;
12640 hdr->name = NULL; /* not a header capture */
12641 hdr->namelen = 0;
12642 hdr->len = len;
12643 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12644 hdr->index = px->nb_req_cap++;
12645
12646 px->req_cap = hdr;
12647 px->to_log |= LW_REQHDR;
12648
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12649 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12650 rule->action_ptr = http_action_req_capture;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12651 rule->arg.cap.expr = expr;
12652 rule->arg.cap.hdr = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12653 }
12654
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12655 else if (strcmp(args[cur_arg], "id") == 0) {
12656 int id;
12657 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12658
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12659 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12660
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12661 if (!args[cur_arg]) {
12662 memprintf(err, "missing id value");
12663 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12664 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12665 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12666
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12667 id = strtol(args[cur_arg], &error, 10);
12668 if (*error != '\0') {
12669 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12670 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12671 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12672 }
12673 cur_arg++;
12674
12675 proxy->conf.args.ctx = ARGC_CAP;
12676
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12677 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12678 rule->action_ptr = http_action_req_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12679 rule->arg.capid.expr = expr;
12680 rule->arg.capid.idx = id;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12681 }
12682
12683 else {
12684 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12685 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12686 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12687 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12688
12689 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12690 return ACT_RET_PRS_OK;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12691}
12692
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12693/* This function executes the "capture" action and store the result in a
12694 * capture slot if exists. It executes a fetch expression, turns the result
12695 * into a string and puts it in a capture slot. It always returns 1. If an
12696 * error occurs the action is cancelled, but the rule processing continues.
12697 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12698enum 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]12699 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12700{
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12701 struct sample *key;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12702 struct cap_hdr *h;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12703 char **cap = s->res_cap;
12704 struct proxy *fe = strm_fe(s);
12705 int len;
12706 int i;
12707
12708 /* Look for the original configuration. */
12709 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12710 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12711 i--, h = h->next);
12712 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12713 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12714
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12715 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]12716 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12717 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12718
12719 if (cap[h->index] == NULL)
12720 cap[h->index] = pool_alloc2(h->pool);
12721
12722 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12723 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12724
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12725 len = key->data.u.str.len;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12726 if (len > h->len)
12727 len = h->len;
12728
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12729 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12730 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12731 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12732}
12733
12734/* parse an "http-response capture" action. It takes a single argument which is
12735 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12736 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12737 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12738 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12739enum act_parse_ret parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px,
12740 struct act_rule *rule, char **err)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12741{
12742 struct sample_expr *expr;
12743 int cur_arg;
12744 int id;
12745 char *error;
12746
12747 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12748 if (strcmp(args[cur_arg], "if") == 0 ||
12749 strcmp(args[cur_arg], "unless") == 0)
12750 break;
12751
12752 if (cur_arg < *orig_arg + 3) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]12753 memprintf(err, "expects <expression> id <idx>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12754 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12755 }
12756
12757 cur_arg = *orig_arg;
12758 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12759 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12760 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12761
12762 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12763 memprintf(err,
12764 "fetch method '%s' extracts information from '%s', none of which is available here",
12765 args[cur_arg-1], sample_src_names(expr->fetch->use));
12766 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12767 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12768 }
12769
12770 if (!args[cur_arg] || !*args[cur_arg]) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]12771 memprintf(err, "expects 'id'");
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12772 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12773 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12774 }
12775
12776 if (strcmp(args[cur_arg], "id") != 0) {
12777 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12778 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12779 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12780 }
12781
12782 cur_arg++;
12783
12784 if (!args[cur_arg]) {
12785 memprintf(err, "missing id value");
12786 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12787 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12788 }
12789
12790 id = strtol(args[cur_arg], &error, 10);
12791 if (*error != '\0') {
12792 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12793 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12794 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12795 }
12796 cur_arg++;
12797
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12798 proxy->conf.args.ctx = ARGC_CAP;
12799
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12800 rule->action = ACT_CUSTOM;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12801 rule->action_ptr = http_action_res_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12802 rule->arg.capid.expr = expr;
12803 rule->arg.capid.idx = id;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12804
12805 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12806 return ACT_RET_PRS_OK;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12807}
12808
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12809/*
12810 * Return the struct http_req_action_kw associated to a keyword.
12811 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12812struct action_kw *action_http_req_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12813{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12814 return action_lookup(&http_req_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12815}
12816
12817/*
12818 * Return the struct http_res_action_kw associated to a keyword.
12819 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12820struct action_kw *action_http_res_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12821{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12822 return action_lookup(&http_res_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12823}
12824
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12825/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12826/* All supported ACL keywords must be declared here. */
12827/************************************************************************/
12828
12829/* Note: must not be declared <const> as its list will be overwritten.
12830 * Please take care of keeping this list alphabetically sorted.
12831 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12832static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12833 { "base", "base", PAT_MATCH_STR },
12834 { "base_beg", "base", PAT_MATCH_BEG },
12835 { "base_dir", "base", PAT_MATCH_DIR },
12836 { "base_dom", "base", PAT_MATCH_DOM },
12837 { "base_end", "base", PAT_MATCH_END },
12838 { "base_len", "base", PAT_MATCH_LEN },
12839 { "base_reg", "base", PAT_MATCH_REG },
12840 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]12841
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12842 { "cook", "req.cook", PAT_MATCH_STR },
12843 { "cook_beg", "req.cook", PAT_MATCH_BEG },
12844 { "cook_dir", "req.cook", PAT_MATCH_DIR },
12845 { "cook_dom", "req.cook", PAT_MATCH_DOM },
12846 { "cook_end", "req.cook", PAT_MATCH_END },
12847 { "cook_len", "req.cook", PAT_MATCH_LEN },
12848 { "cook_reg", "req.cook", PAT_MATCH_REG },
12849 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12850
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12851 { "hdr", "req.hdr", PAT_MATCH_STR },
12852 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
12853 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
12854 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
12855 { "hdr_end", "req.hdr", PAT_MATCH_END },
12856 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
12857 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
12858 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12859
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12860 /* these two declarations uses strings with list storage (in place
12861 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
12862 * and delete functions are relative to the list management. The parse
12863 * and match method are related to the corresponding fetch methods. This
12864 * is very particular ACL declaration mode.
12865 */
12866 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
12867 { "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]12868
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12869 { "path", "path", PAT_MATCH_STR },
12870 { "path_beg", "path", PAT_MATCH_BEG },
12871 { "path_dir", "path", PAT_MATCH_DIR },
12872 { "path_dom", "path", PAT_MATCH_DOM },
12873 { "path_end", "path", PAT_MATCH_END },
12874 { "path_len", "path", PAT_MATCH_LEN },
12875 { "path_reg", "path", PAT_MATCH_REG },
12876 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12877
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12878 { "req_ver", "req.ver", PAT_MATCH_STR },
12879 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12880
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12881 { "scook", "res.cook", PAT_MATCH_STR },
12882 { "scook_beg", "res.cook", PAT_MATCH_BEG },
12883 { "scook_dir", "res.cook", PAT_MATCH_DIR },
12884 { "scook_dom", "res.cook", PAT_MATCH_DOM },
12885 { "scook_end", "res.cook", PAT_MATCH_END },
12886 { "scook_len", "res.cook", PAT_MATCH_LEN },
12887 { "scook_reg", "res.cook", PAT_MATCH_REG },
12888 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12889
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12890 { "shdr", "res.hdr", PAT_MATCH_STR },
12891 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
12892 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
12893 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
12894 { "shdr_end", "res.hdr", PAT_MATCH_END },
12895 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
12896 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
12897 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12898
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12899 { "url", "url", PAT_MATCH_STR },
12900 { "url_beg", "url", PAT_MATCH_BEG },
12901 { "url_dir", "url", PAT_MATCH_DIR },
12902 { "url_dom", "url", PAT_MATCH_DOM },
12903 { "url_end", "url", PAT_MATCH_END },
12904 { "url_len", "url", PAT_MATCH_LEN },
12905 { "url_reg", "url", PAT_MATCH_REG },
12906 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12907
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12908 { "urlp", "urlp", PAT_MATCH_STR },
12909 { "urlp_beg", "urlp", PAT_MATCH_BEG },
12910 { "urlp_dir", "urlp", PAT_MATCH_DIR },
12911 { "urlp_dom", "urlp", PAT_MATCH_DOM },
12912 { "urlp_end", "urlp", PAT_MATCH_END },
12913 { "urlp_len", "urlp", PAT_MATCH_LEN },
12914 { "urlp_reg", "urlp", PAT_MATCH_REG },
12915 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12916
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]12917 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12918}};
12919
12920/************************************************************************/
12921/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12922/************************************************************************/
12923/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12924static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12925 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12926 { "base32", smp_fetch_base32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12927 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12928
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]12929 /* capture are allocated and are permanent in the stream */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12930 { "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]12931
12932 /* retrieve these captures from the HTTP logs */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12933 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12934 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12935 { "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]12936
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12937 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
12938 { "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]12939
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12940 /* cookie is valid in both directions (eg: for "stick ...") but cook*
12941 * are only here to match the ACL's name, are request-only and are used
12942 * for ACL compatibility only.
12943 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12944 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12945 { "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]12946 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12947 { "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]12948
12949 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
12950 * only here to match the ACL's name, are request-only and are used for
12951 * ACL compatibility only.
12952 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12953 { "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]12954 { "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]12955 { "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]12956 { "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]12957
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]12958 { "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]12959 { "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]12960 { "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]12961 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12962 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]12963 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12964
12965 /* HTTP protocol on the request path */
12966 { "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]12967 { "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]12968
12969 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12970 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
12971 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12972
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]12973 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12974 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
12975 { "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]12976 { "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]12977
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12978 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12979 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
12980 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12981
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12982 /* 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]12983 { "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]12984 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12985 { "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]12986
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12987 { "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]12988 { "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]12989 { "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]12990 { "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]12991 { "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]12992 { "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]12993 { "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]12994
12995 /* 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]12996 { "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]12997 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12998 { "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]12999
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13000 { "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]13001 { "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]13002 { "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]13003 { "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]13004 { "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]13005 { "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]13006 { "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]13007
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13008 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13009 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13010 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
13011 { "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]13012 { "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]13013
13014 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13015 { "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]13016 { "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]13017 { "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]13018 { "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]13019
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13020 { "status", smp_fetch_stcode, 0, NULL, SMP_T_SINT, SMP_USE_HRSHP },
Thierry Fournier0e00dca2016-04-07 15:47:40 +0200[diff] [blame]13021 { "unique-id", smp_fetch_uniqueid, 0, NULL, SMP_T_STR, SMP_SRC_L4SRV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13022 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13023 { "url32", smp_fetch_url32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]13024 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13025 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13026 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]13027 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13028 { "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]13029 { "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]13030 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13031}};
13032
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13033
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13034/************************************************************************/
13035/* All supported converter keywords must be declared here. */
13036/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13037/* Note: must not be declared <const> as its list will be overwritten */
13038static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13039 { "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]13040 { "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]13041 { "capture-req", smp_conv_req_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
13042 { "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]13043 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13044 { NULL, NULL, 0, 0, 0 },
13045}};
13046
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]13047
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13048/************************************************************************/
13049/* All supported http-request action keywords must be declared here. */
13050/************************************************************************/
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]13051struct action_kw_list http_req_actions = {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13052 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]13053 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13054 { "set-method", parse_set_req_line },
13055 { "set-path", parse_set_req_line },
13056 { "set-query", parse_set_req_line },
13057 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]13058 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13059 }
13060};
13061
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]13062struct action_kw_list http_res_actions = {
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13063 .kw = {
13064 { "capture", parse_http_res_capture },
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]13065 { "set-status", parse_http_set_status },
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13066 { NULL, NULL }
13067 }
13068};
13069
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13070__attribute__((constructor))
13071static void __http_protocol_init(void)
13072{
13073 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]13074 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13075 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13076 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13077 http_res_keywords_register(&http_res_actions);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13078}
13079
13080
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]13081/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]13082 * Local variables:
13083 * c-indent-level: 8
13084 * c-basic-offset: 8
13085 * End:
13086 */