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git01.mediatek.com / haproxy / 4ffd51a8480b75a3efd6f7821162bb35ada89cd7 / . / src / proto_http.c
blob: 3eb9e151b1bad22bb229a33897e221dd5d744fe9 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreau7c669d72008-06-20 15:04:11 +0200[diff] [blame]4 * Copyright 2000-2008 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 Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]26#include <common/appsession.h>
27#include <common/compat.h>
28#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]29#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]30#include <common/memory.h>
31#include <common/mini-clist.h>
32#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]33#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/time.h>
35#include <common/uri_auth.h>
36#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]37
38#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]39#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]40
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]41#include <proto/acl.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]42#include <proto/backend.h>
43#include <proto/buffers.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]44#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]45#include <proto/fd.h>
46#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]47#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]48#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]49#include <proto/proto_http.h>
50#include <proto/queue.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]51#include <proto/senddata.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]52#include <proto/session.h>
Willy Tarreau2d212792008-08-27 21:41:35 +0200[diff] [blame]53#include <proto/stream_sock.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]54#include <proto/task.h>
55
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]56#ifdef CONFIG_HAP_TCPSPLICE
57#include <libtcpsplice.h>
58#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]59
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]60#define DEBUG_PARSE_NO_SPEEDUP
61#undef DEBUG_PARSE_NO_SPEEDUP
62
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]63/* This is used to perform a quick jump as an alternative to a break/continue
64 * instruction. The first argument is the label for normal operation, and the
65 * second one is the break/continue instruction in the no_speedup mode.
66 */
67
68#ifdef DEBUG_PARSE_NO_SPEEDUP
69#define QUICK_JUMP(x,y) y
70#else
71#define QUICK_JUMP(x,y) goto x
72#endif
73
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]74/* This is used by remote monitoring */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]75const char HTTP_200[] =
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]76 "HTTP/1.0 200 OK\r\n"
77 "Cache-Control: no-cache\r\n"
78 "Connection: close\r\n"
79 "Content-Type: text/html\r\n"
80 "\r\n"
81 "<html><body><h1>200 OK</h1>\nHAProxy: service ready.\n</body></html>\n";
82
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]83const struct chunk http_200_chunk = {
84 .str = (char *)&HTTP_200,
85 .len = sizeof(HTTP_200)-1
86};
87
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]88const char *HTTP_301 =
89 "HTTP/1.0 301 Moved Permantenly\r\n"
90 "Cache-Control: no-cache\r\n"
91 "Connection: close\r\n"
92 "Location: "; /* not terminated since it will be concatenated with the URL */
93
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]94const char *HTTP_302 =
95 "HTTP/1.0 302 Found\r\n"
96 "Cache-Control: no-cache\r\n"
97 "Connection: close\r\n"
98 "Location: "; /* not terminated since it will be concatenated with the URL */
99
100/* same as 302 except that the browser MUST retry with the GET method */
101const char *HTTP_303 =
102 "HTTP/1.0 303 See Other\r\n"
103 "Cache-Control: no-cache\r\n"
104 "Connection: close\r\n"
105 "Location: "; /* not terminated since it will be concatenated with the URL */
106
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]107/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
108const char *HTTP_401_fmt =
109 "HTTP/1.0 401 Unauthorized\r\n"
110 "Cache-Control: no-cache\r\n"
111 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]112 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]113 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
114 "\r\n"
115 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
116
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]117
118const int http_err_codes[HTTP_ERR_SIZE] = {
119 [HTTP_ERR_400] = 400,
120 [HTTP_ERR_403] = 403,
121 [HTTP_ERR_408] = 408,
122 [HTTP_ERR_500] = 500,
123 [HTTP_ERR_502] = 502,
124 [HTTP_ERR_503] = 503,
125 [HTTP_ERR_504] = 504,
126};
127
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]128static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]129 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]130 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]131 "Cache-Control: no-cache\r\n"
132 "Connection: close\r\n"
133 "Content-Type: text/html\r\n"
134 "\r\n"
135 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
136
137 [HTTP_ERR_403] =
138 "HTTP/1.0 403 Forbidden\r\n"
139 "Cache-Control: no-cache\r\n"
140 "Connection: close\r\n"
141 "Content-Type: text/html\r\n"
142 "\r\n"
143 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
144
145 [HTTP_ERR_408] =
146 "HTTP/1.0 408 Request Time-out\r\n"
147 "Cache-Control: no-cache\r\n"
148 "Connection: close\r\n"
149 "Content-Type: text/html\r\n"
150 "\r\n"
151 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
152
153 [HTTP_ERR_500] =
154 "HTTP/1.0 500 Server Error\r\n"
155 "Cache-Control: no-cache\r\n"
156 "Connection: close\r\n"
157 "Content-Type: text/html\r\n"
158 "\r\n"
159 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
160
161 [HTTP_ERR_502] =
162 "HTTP/1.0 502 Bad Gateway\r\n"
163 "Cache-Control: no-cache\r\n"
164 "Connection: close\r\n"
165 "Content-Type: text/html\r\n"
166 "\r\n"
167 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
168
169 [HTTP_ERR_503] =
170 "HTTP/1.0 503 Service Unavailable\r\n"
171 "Cache-Control: no-cache\r\n"
172 "Connection: close\r\n"
173 "Content-Type: text/html\r\n"
174 "\r\n"
175 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
176
177 [HTTP_ERR_504] =
178 "HTTP/1.0 504 Gateway Time-out\r\n"
179 "Cache-Control: no-cache\r\n"
180 "Connection: close\r\n"
181 "Content-Type: text/html\r\n"
182 "\r\n"
183 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
184
185};
186
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]187/* We must put the messages here since GCC cannot initialize consts depending
188 * on strlen().
189 */
190struct chunk http_err_chunks[HTTP_ERR_SIZE];
191
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]192#define FD_SETS_ARE_BITFIELDS
193#ifdef FD_SETS_ARE_BITFIELDS
194/*
195 * This map is used with all the FD_* macros to check whether a particular bit
196 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
197 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
198 * byte should be encoded. Be careful to always pass bytes from 0 to 255
199 * exclusively to the macros.
200 */
201fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
202fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
203
204#else
205#error "Check if your OS uses bitfields for fd_sets"
206#endif
207
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]208void init_proto_http()
209{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]210 int i;
211 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]212 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]213
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]214 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
215 if (!http_err_msgs[msg]) {
216 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
217 abort();
218 }
219
220 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
221 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
222 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]223
224 /* initialize the log header encoding map : '{|}"#' should be encoded with
225 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
226 * URL encoding only requires '"', '#' to be encoded as well as non-
227 * printable characters above.
228 */
229 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
230 memset(url_encode_map, 0, sizeof(url_encode_map));
231 for (i = 0; i < 32; i++) {
232 FD_SET(i, hdr_encode_map);
233 FD_SET(i, url_encode_map);
234 }
235 for (i = 127; i < 256; i++) {
236 FD_SET(i, hdr_encode_map);
237 FD_SET(i, url_encode_map);
238 }
239
240 tmp = "\"#{|}";
241 while (*tmp) {
242 FD_SET(*tmp, hdr_encode_map);
243 tmp++;
244 }
245
246 tmp = "\"#";
247 while (*tmp) {
248 FD_SET(*tmp, url_encode_map);
249 tmp++;
250 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]251
252 /* memory allocations */
253 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]254 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]255}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]256
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]257/*
258 * We have 26 list of methods (1 per first letter), each of which can have
259 * up to 3 entries (2 valid, 1 null).
260 */
261struct http_method_desc {
262 http_meth_t meth;
263 int len;
264 const char text[8];
265};
266
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]267const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]268 ['C' - 'A'] = {
269 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
270 },
271 ['D' - 'A'] = {
272 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
273 },
274 ['G' - 'A'] = {
275 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
276 },
277 ['H' - 'A'] = {
278 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
279 },
280 ['P' - 'A'] = {
281 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
282 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
283 },
284 ['T' - 'A'] = {
285 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
286 },
287 /* rest is empty like this :
288 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
289 */
290};
291
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]292/* 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]293 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]294 * RFC2616 for those chars.
295 */
296
297const char http_is_spht[256] = {
298 [' '] = 1, ['\t'] = 1,
299};
300
301const char http_is_crlf[256] = {
302 ['\r'] = 1, ['\n'] = 1,
303};
304
305const char http_is_lws[256] = {
306 [' '] = 1, ['\t'] = 1,
307 ['\r'] = 1, ['\n'] = 1,
308};
309
310const char http_is_sep[256] = {
311 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
312 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
313 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
314 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
315 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
316};
317
318const char http_is_ctl[256] = {
319 [0 ... 31] = 1,
320 [127] = 1,
321};
322
323/*
324 * A token is any ASCII char that is neither a separator nor a CTL char.
325 * Do not overwrite values in assignment since gcc-2.95 will not handle
326 * them correctly. Instead, define every non-CTL char's status.
327 */
328const char http_is_token[256] = {
329 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
330 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
331 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
332 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
333 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
334 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
335 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
336 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
337 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
338 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
339 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
340 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
341 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
342 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
343 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
344 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
345 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
346 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
347 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
348 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
349 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
350 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
351 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
352 ['|'] = 1, ['}'] = 0, ['~'] = 1,
353};
354
355
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]356/*
357 * An http ver_token is any ASCII which can be found in an HTTP version,
358 * which includes 'H', 'T', 'P', '/', '.' and any digit.
359 */
360const char http_is_ver_token[256] = {
361 ['.'] = 1, ['/'] = 1,
362 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
363 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
364 ['H'] = 1, ['P'] = 1, ['T'] = 1,
365};
366
367
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]368#ifdef DEBUG_FULL
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]369static char *cli_stnames[4] = { "DAT", "SHR", "SHW", "CLS" };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]370#endif
371
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]372static void http_sess_log(struct session *s);
373
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]374/*
375 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
376 * CRLF. Text length is measured first, so it cannot be NULL.
377 * The header is also automatically added to the index <hdr_idx>, and the end
378 * of headers is automatically adjusted. The number of bytes added is returned
379 * on success, otherwise <0 is returned indicating an error.
380 */
381int http_header_add_tail(struct buffer *b, struct http_msg *msg,
382 struct hdr_idx *hdr_idx, const char *text)
383{
384 int bytes, len;
385
386 len = strlen(text);
387 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
388 if (!bytes)
389 return -1;
390 msg->eoh += bytes;
391 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
392}
393
394/*
395 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
396 * CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
397 * the buffer is only opened and the space reserved, but nothing is copied.
398 * The header is also automatically added to the index <hdr_idx>, and the end
399 * of headers is automatically adjusted. The number of bytes added is returned
400 * on success, otherwise <0 is returned indicating an error.
401 */
402int http_header_add_tail2(struct buffer *b, struct http_msg *msg,
403 struct hdr_idx *hdr_idx, const char *text, int len)
404{
405 int bytes;
406
407 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
408 if (!bytes)
409 return -1;
410 msg->eoh += bytes;
411 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
412}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]413
414/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]415 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
416 * If so, returns the position of the first non-space character relative to
417 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
418 * to return a pointer to the place after the first space. Returns 0 if the
419 * header name does not match. Checks are case-insensitive.
420 */
421int http_header_match2(const char *hdr, const char *end,
422 const char *name, int len)
423{
424 const char *val;
425
426 if (hdr + len >= end)
427 return 0;
428 if (hdr[len] != ':')
429 return 0;
430 if (strncasecmp(hdr, name, len) != 0)
431 return 0;
432 val = hdr + len + 1;
433 while (val < end && HTTP_IS_SPHT(*val))
434 val++;
435 if ((val >= end) && (len + 2 <= end - hdr))
436 return len + 2; /* we may replace starting from second space */
437 return val - hdr;
438}
439
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]440/* Find the end of the header value contained between <s> and <e>.
441 * See RFC2616, par 2.2 for more information. Note that it requires
442 * a valid header to return a valid result.
443 */
444const char *find_hdr_value_end(const char *s, const char *e)
445{
446 int quoted, qdpair;
447
448 quoted = qdpair = 0;
449 for (; s < e; s++) {
450 if (qdpair) qdpair = 0;
451 else if (quoted && *s == '\\') qdpair = 1;
452 else if (quoted && *s == '"') quoted = 0;
453 else if (*s == '"') quoted = 1;
454 else if (*s == ',') return s;
455 }
456 return s;
457}
458
459/* Find the first or next occurrence of header <name> in message buffer <sol>
460 * using headers index <idx>, and return it in the <ctx> structure. This
461 * structure holds everything necessary to use the header and find next
462 * occurrence. If its <idx> member is 0, the header is searched from the
463 * beginning. Otherwise, the next occurrence is returned. The function returns
464 * 1 when it finds a value, and 0 when there is no more.
465 */
466int http_find_header2(const char *name, int len,
467 const char *sol, struct hdr_idx *idx,
468 struct hdr_ctx *ctx)
469{
470 __label__ return_hdr, next_hdr;
471 const char *eol, *sov;
472 int cur_idx;
473
474 if (ctx->idx) {
475 /* We have previously returned a value, let's search
476 * another one on the same line.
477 */
478 cur_idx = ctx->idx;
479 sol = ctx->line;
480 sov = sol + ctx->val + ctx->vlen;
481 eol = sol + idx->v[cur_idx].len;
482
483 if (sov >= eol)
484 /* no more values in this header */
485 goto next_hdr;
486
487 /* values remaining for this header, skip the comma */
488 sov++;
489 while (sov < eol && http_is_lws[(unsigned char)*sov])
490 sov++;
491
492 goto return_hdr;
493 }
494
495 /* first request for this header */
496 sol += hdr_idx_first_pos(idx);
497 cur_idx = hdr_idx_first_idx(idx);
498
499 while (cur_idx) {
500 eol = sol + idx->v[cur_idx].len;
501
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]502 if (len == 0) {
503 /* No argument was passed, we want any header.
504 * To achieve this, we simply build a fake request. */
505 while (sol + len < eol && sol[len] != ':')
506 len++;
507 name = sol;
508 }
509
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]510 if ((len < eol - sol) &&
511 (sol[len] == ':') &&
512 (strncasecmp(sol, name, len) == 0)) {
513
514 sov = sol + len + 1;
515 while (sov < eol && http_is_lws[(unsigned char)*sov])
516 sov++;
517 return_hdr:
518 ctx->line = sol;
519 ctx->idx = cur_idx;
520 ctx->val = sov - sol;
521
522 eol = find_hdr_value_end(sov, eol);
523 ctx->vlen = eol - sov;
524 return 1;
525 }
526 next_hdr:
527 sol = eol + idx->v[cur_idx].cr + 1;
528 cur_idx = idx->v[cur_idx].next;
529 }
530 return 0;
531}
532
533int http_find_header(const char *name,
534 const char *sol, struct hdr_idx *idx,
535 struct hdr_ctx *ctx)
536{
537 return http_find_header2(name, strlen(name), sol, idx, ctx);
538}
539
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]540/* This function shuts down the buffers on the server side, and sets indicators
541 * accordingly. The server's fd is supposed to already be closed. Note that if
542 * <status> is 0, or if the message pointer is NULL, then no message is returned.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]543 */
544void srv_close_with_err(struct session *t, int err, int finst,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]545 int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]546{
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]547 buffer_write_ena(t->rep);
Willy Tarreauba392ce2008-08-16 21:13:23 +0200[diff] [blame]548 buffer_shutw(t->req);
549 buffer_shutr(t->rep);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]550 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]551 t->txn.status = status;
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]552 if (t->fe->mode == PR_MODE_HTTP)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]553 client_return(t, msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]554 }
555 if (!(t->flags & SN_ERR_MASK))
556 t->flags |= err;
557 if (!(t->flags & SN_FINST_MASK))
558 t->flags |= finst;
559}
560
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]561/* This function returns the appropriate error location for the given session
562 * and message.
563 */
564
565struct chunk *error_message(struct session *s, int msgnum)
566{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]567 if (s->be->errmsg[msgnum].str)
568 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]569 else if (s->fe->errmsg[msgnum].str)
570 return &s->fe->errmsg[msgnum];
571 else
572 return &http_err_chunks[msgnum];
573}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]574
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]575/*
576 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
577 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
578 */
579static http_meth_t find_http_meth(const char *str, const int len)
580{
581 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]582 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]583
584 m = ((unsigned)*str - 'A');
585
586 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]587 for (h = http_methods[m]; h->len > 0; h++) {
588 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]589 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]590 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]591 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]592 };
593 return HTTP_METH_OTHER;
594 }
595 return HTTP_METH_NONE;
596
597}
598
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]599/* Parse the URI from the given transaction (which is assumed to be in request
600 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
601 * It is returned otherwise.
602 */
603static char *
604http_get_path(struct http_txn *txn)
605{
606 char *ptr, *end;
607
608 ptr = txn->req.sol + txn->req.sl.rq.u;
609 end = ptr + txn->req.sl.rq.u_l;
610
611 if (ptr >= end)
612 return NULL;
613
614 /* RFC2616, par. 5.1.2 :
615 * Request-URI = "*" | absuri | abspath | authority
616 */
617
618 if (*ptr == '*')
619 return NULL;
620
621 if (isalpha((unsigned char)*ptr)) {
622 /* this is a scheme as described by RFC3986, par. 3.1 */
623 ptr++;
624 while (ptr < end &&
625 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
626 ptr++;
627 /* skip '://' */
628 if (ptr == end || *ptr++ != ':')
629 return NULL;
630 if (ptr == end || *ptr++ != '/')
631 return NULL;
632 if (ptr == end || *ptr++ != '/')
633 return NULL;
634 }
635 /* skip [user[:passwd]@]host[:[port]] */
636
637 while (ptr < end && *ptr != '/')
638 ptr++;
639
640 if (ptr == end)
641 return NULL;
642
643 /* OK, we got the '/' ! */
644 return ptr;
645}
646
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]647/* Processes the client, server, request and response jobs of a session task,
648 * then puts it back to the wait queue in a clean state, or cleans up its
649 * resources if it must be deleted. Returns in <next> the date the task wants
650 * to be woken up, or TICK_ETERNITY. In order not to call all functions for
651 * nothing too many times, the request and response buffers flags are monitored
652 * and each function is called only if at least another function has changed at
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]653 * least one flag it is interested in.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]654 */
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]655void process_session(struct task *t, int *next)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]656{
657 struct session *s = t->context;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]658 int resync;
659 unsigned int rqf_cli, rpf_cli;
660 unsigned int rqf_srv, rpf_srv;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]661
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]662 /* Check timeouts only during data phase for now */
663 if (unlikely(t->state & TASK_WOKEN_TIMER)) {
Willy Tarreau4ffd51a2008-08-30 13:36:43 +0200[diff] [blame^]664 if (s->rep->cons->state == SI_ST_EST) {
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]665 stream_sock_data_check_timeouts(s->rep->cons->fd);
Willy Tarreau4ffd51a2008-08-30 13:36:43 +0200[diff] [blame^]666 if (tick_is_expired(s->rep->analyse_exp, now_ms))
667 s->rep->flags |= BF_ANA_TIMEOUT;
668 }
669 if (s->req->cons->state == SI_ST_EST) {
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]670 stream_sock_data_check_timeouts(s->req->cons->fd);
Willy Tarreau4ffd51a2008-08-30 13:36:43 +0200[diff] [blame^]671 if (tick_is_expired(s->req->analyse_exp, now_ms))
672 s->req->flags |= BF_ANA_TIMEOUT;
673 }
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]674 }
675
Willy Tarreau48adac52008-08-30 04:58:38 +0200[diff] [blame]676 /* Check if we need to close the write side. This can only happen
677 * when either SHUTR or EMPTY appears, because WRITE_ENA cannot appear
678 * from low level, and neither HIJACK nor SHUTW can disappear from low
679 * level.
680 */
681 if (unlikely((s->req->flags & (BF_SHUTW|BF_EMPTY|BF_HIJACK|BF_WRITE_ENA|BF_SHUTR)) == (BF_EMPTY|BF_WRITE_ENA|BF_SHUTR))) {
682 buffer_shutw(s->req);
683 s->req->cons->shutw(s->req->cons);
684 }
685
686 if (unlikely((s->rep->flags & (BF_SHUTW|BF_EMPTY|BF_HIJACK|BF_WRITE_ENA|BF_SHUTR)) == (BF_EMPTY|BF_WRITE_ENA|BF_SHUTR))) {
687 buffer_shutw(s->rep);
688 s->rep->cons->shutw(s->rep->cons);
689 }
690
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]691 /* When a server-side connection is released, we have to
692 * count it and check for pending connections on this server.
693 */
694 if (unlikely(s->req->cons->state == SI_ST_CLO &&
695 s->req->cons->prev_state == SI_ST_EST)) {
696 /* Count server-side errors (but not timeouts). */
697 if (s->req->flags & BF_WRITE_ERROR) {
698 s->be->failed_resp++;
699 if (s->srv)
700 s->srv->failed_resp++;
701 }
702
703 if (s->srv) {
704 s->srv->cur_sess--;
705 sess_change_server(s, NULL);
706 if (may_dequeue_tasks(s->srv, s->be))
707 process_srv_queue(s->srv);
708 }
709
710 if (unlikely((s->req->cons->state == SI_ST_CLO) &&
711 (global.mode & MODE_DEBUG) &&
712 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
713 int len;
714 len = sprintf(trash, "%08x:%s.srvcls[%04x:%04x]\n",
715 s->uniq_id, s->be->id, (unsigned short)s->req->prod->fd, (unsigned short)s->req->cons->fd);
716 write(1, trash, len);
717 }
718 }
719
Willy Tarreau48adac52008-08-30 04:58:38 +0200[diff] [blame]720 /* This is needed when debugging is enabled, to indicate client-side close */
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]721 if (unlikely(s->rep->cons->state == SI_ST_CLO &&
722 s->rep->cons->prev_state == SI_ST_EST)) {
723 if (unlikely((s->rep->cons->state == SI_ST_CLO) &&
724 (global.mode & MODE_DEBUG) &&
725 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
726 int len;
727 len = sprintf(trash, "%08x:%s.clicls[%04x:%04x]\n",
728 s->uniq_id, s->be->id, (unsigned short)s->rep->prod->fd, (unsigned short)s->req->cons->fd);
729 write(1, trash, len);
730 }
731 }
732
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]733 /* Dirty trick: force one first pass everywhere */
Willy Tarreau4ffd51a2008-08-30 13:36:43 +0200[diff] [blame^]734 rqf_cli = rqf_srv = ~s->req->flags;
735 rpf_cli = rpf_srv = ~s->rep->flags;
Willy Tarreau507385d2008-08-17 13:04:25 +0200[diff] [blame]736
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]737 /* well, the ST_CONN state is already handled properly */
738 if (s->req->prod->state == SI_ST_EST) {
739 rqf_cli = s->req->flags;
740 rpf_cli = s->rep->flags;
741 }
742
743 if (s->req->cons->state == SI_ST_EST) {
744 rqf_srv = s->req->flags;
745 rpf_srv = s->rep->flags;
746 }
747
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]748 do {
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]749 DPRINTF(stderr,"[%u] %s: task=%p rq=%p, rp=%p, exp(r,w)=%u,%u rqf=%08x rpf=%08x rql=%d rpl=%d cs=%d ss=%d\n",
750 now_ms, __FUNCTION__,
751 t,
752 s->req, s->rep,
753 s->req->rex, s->rep->wex,
754 s->req->flags, s->rep->flags,
755 s->req->l, s->rep->l, s->rep->cons->state, s->req->cons->state);
756
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]757 resync = 0;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]758
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]759 /* Maybe resync client FD state */
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]760 if (s->rep->cons->state != SI_ST_CLO) {
761 if (((rqf_cli ^ s->req->flags) & BF_MASK_INTERFACE_I) ||
762 ((rpf_cli ^ s->rep->flags) & BF_MASK_INTERFACE_O)) {
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]763 stream_sock_data_update(s->rep->cons->fd);
764 rqf_cli = s->req->flags;
765 rpf_cli = s->rep->flags;
766
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]767 if (unlikely((s->rep->cons->state == SI_ST_CLO) &&
768 (global.mode & MODE_DEBUG) &&
769 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
770 int len;
771 len = sprintf(trash, "%08x:%s.clicls[%04x:%04x]\n",
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]772 s->uniq_id, s->be->id, (unsigned short)s->rep->prod->fd, (unsigned short)s->req->cons->fd);
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]773 write(1, trash, len);
774 }
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]775 }
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]776 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]777
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]778 /* Maybe resync server FD state */
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]779 if (s->req->cons->state != SI_ST_CLO) {
780 if (((rpf_srv ^ s->rep->flags) & BF_MASK_INTERFACE_I) ||
781 ((rqf_srv ^ s->req->flags) & BF_MASK_INTERFACE_O)) {
Willy Tarreau4ffd51a2008-08-30 13:36:43 +0200[diff] [blame^]782 if (s->req->cons->state < SI_ST_EST && s->req->flags & BF_WRITE_ENA) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]783 process_srv_conn(s);
Willy Tarreau4ffd51a2008-08-30 13:36:43 +0200[diff] [blame^]784 resync = 1; /* we might have to resync */
785 }
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]786
787 if (s->req->cons->state == SI_ST_EST) {
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]788 if ((s->req->flags & (BF_SHUTW|BF_EMPTY|BF_WRITE_ENA)) == (BF_EMPTY|BF_WRITE_ENA) &&
Willy Tarreau376580a2008-08-27 18:52:22 +0200[diff] [blame]789 s->be->options & PR_O_FORCE_CLO &&
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]790 s->rep->flags & BF_READ_ACTIVITY) {
Willy Tarreau376580a2008-08-27 18:52:22 +0200[diff] [blame]791 /* We want to force the connection to the server to close,
792 * and the server has begun to respond. That's the right
793 * time.
794 */
795 buffer_shutw_now(s->req);
796 }
797
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]798 stream_sock_data_update(s->req->cons->fd);
Willy Tarreau376580a2008-08-27 18:52:22 +0200[diff] [blame]799
800 /* When a server-side connection is released, we have to
801 * count it and check for pending connections on this server.
802 */
803 if (s->req->cons->state == SI_ST_CLO) {
804 if (s->srv) {
805 s->srv->cur_sess--;
806 sess_change_server(s, NULL);
807 if (may_dequeue_tasks(s->srv, s->be))
808 process_srv_queue(s->srv);
809 }
810 }
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]811 }
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]812 rqf_srv = s->req->flags;
813 rpf_srv = s->rep->flags;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]814
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]815 if (unlikely((s->req->cons->state == SI_ST_CLO) &&
816 (global.mode & MODE_DEBUG) &&
817 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
818 int len;
819 len = sprintf(trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]820 s->uniq_id, s->be->id, (unsigned short)s->req->prod->fd, (unsigned short)s->req->cons->fd);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]821 write(1, trash, len);
822 }
823 }
Willy Tarreau4ffd51a2008-08-30 13:36:43 +0200[diff] [blame^]824 }
825
826 /* we may have to resync because of pending connections */
827 if (resync)
828 continue;
829
830 /**** Process layer 7 below ****/
831
832 /* Analyse request */
833 if (s->req->flags & BF_MASK_ANALYSER) {
834 unsigned int flags = s->req->flags;
835
836 if (s->req->prod->state >= SI_ST_EST) {
837 /* it's up to the analysers to reset write_ena */
838 buffer_write_ena(s->req);
839 if (s->req->analysers)
840 process_request(s);
841 }
842 s->req->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
843 flags &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
844 if (s->req->flags != flags)
845 resync = 1;
846 }
847
848 /* Analyse response */
849 if (unlikely(s->rep->flags & BF_HIJACK)) {
850 /* In inject mode, we wake up everytime something has
851 * happened on the write side of the buffer.
852 */
853 unsigned int flags = s->rep->flags;
854
855 if ((s->rep->flags & (BF_WRITE_PARTIAL|BF_WRITE_ERROR|BF_SHUTW)) &&
856 !(s->rep->flags & BF_FULL)) {
857 produce_content(s);
858 }
859 s->rep->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
860 flags &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
861 if (s->rep->flags != flags)
862 resync = 1;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]863 }
Willy Tarreau4ffd51a2008-08-30 13:36:43 +0200[diff] [blame^]864 else if (s->rep->flags & BF_MASK_ANALYSER) {
865 unsigned int flags = s->rep->flags;
866
867 if (s->rep->prod->state >= SI_ST_EST) {
868 /* it's up to the analysers to reset write_ena */
869 buffer_write_ena(s->rep);
870 if (s->rep->analysers)
871 process_response(s);
872 }
873 s->rep->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
874 flags &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
875 if (s->rep->flags != flags)
876 resync = 1;
877 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]878
Willy Tarreau4ffd51a2008-08-30 13:36:43 +0200[diff] [blame^]879 /* For the moment, we need to clean the client and server flags that
880 * have vanished. This is just a temporary measure though.
881 */
882 rqf_cli &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
883 rqf_srv &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
884 rpf_cli &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
885 rpf_srv &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]886 } while (resync);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]887
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]888 if (likely((s->rep->cons->state != SI_ST_CLO) ||
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]889 (s->req->cons->state != SI_ST_CLO && s->req->cons->state != SI_ST_INI))) {
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100[diff] [blame]890
891 if ((s->fe->options & PR_O_CONTSTATS) && (s->flags & SN_BE_ASSIGNED))
892 session_process_counters(s);
893
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]894 if (s->rep->cons->state == SI_ST_EST)
895 stream_sock_data_finish(s->rep->cons->fd);
896
897 if (s->req->cons->state == SI_ST_EST)
898 stream_sock_data_finish(s->req->cons->fd);
899
Willy Tarreau9a2d1542008-08-30 12:31:07 +0200[diff] [blame]900 s->req->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
901 s->rep->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE & BF_CLEAR_TIMEOUT;
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]902 s->si[0].prev_state = s->si[0].state;
903 s->si[1].prev_state = s->si[1].state;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]904
Willy Tarreau7f875f62008-08-11 17:35:01 +0200[diff] [blame]905 /* Trick: if a request is being waiting for the server to respond,
906 * and if we know the server can timeout, we don't want the timeout
907 * to expire on the client side first, but we're still interested
908 * in passing data from the client to the server (eg: POST). Thus,
909 * we can cancel the client's request timeout if the server's
910 * request timeout is set and the server has not yet sent a response.
911 */
912
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]913 if ((s->rep->flags & (BF_WRITE_ENA|BF_SHUTR)) == 0 &&
Willy Tarreau26ed74d2008-08-17 12:11:14 +0200[diff] [blame]914 (tick_isset(s->req->wex) || tick_isset(s->rep->rex)))
Willy Tarreau7f875f62008-08-11 17:35:01 +0200[diff] [blame]915 s->req->rex = TICK_ETERNITY;
916
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]917 t->expire = tick_first(tick_first(s->req->rex, s->req->wex),
918 tick_first(s->rep->rex, s->rep->wex));
Willy Tarreauffab5b42008-08-17 18:03:28 +0200[diff] [blame]919 if (s->req->analysers)
920 t->expire = tick_first(t->expire, s->req->analyse_exp);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]921
Willy Tarreaucb651252008-08-29 13:57:30 +0200[diff] [blame]922#ifdef DEBUG_FULL
923 fprintf(stderr, "[%u] queuing with exp=%u req->rex=%u req->wex=%u req->ana_exp=%u rep->rex=%u rep->wex=%u\n",
924 now_ms, t->expire, s->req->rex, s->req->wex, s->req->analyse_exp, s->rep->rex, s->rep->wex);
925#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]926 /* restore t to its place in the task list */
927 task_queue(t);
928
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]929#ifdef DEBUG_DEV
930 /* this may only happen when no timeout is set or in case of an FSM bug */
931 if (!t->expire)
932 ABORT_NOW();
933#endif
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]934 *next = t->expire;
935 return; /* nothing more to do */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]936 }
937
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]938 s->fe->feconn--;
939 if (s->flags & SN_BE_ASSIGNED)
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]940 s->be->beconn--;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]941 actconn--;
942
Willy Tarreauf41d4b12007-04-28 23:26:14 +0200[diff] [blame]943 if (unlikely((global.mode & MODE_DEBUG) &&
944 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]945 int len;
Willy Tarreauf495ddf2008-08-17 14:38:41 +0200[diff] [blame]946 len = sprintf(trash, "%08x:%s.closed[%04x:%04x] (term_trace=0x%08x)\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]947 s->uniq_id, s->be->id,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]948 (unsigned short)s->req->prod->fd, (unsigned short)s->req->cons->fd,
Willy Tarreauf495ddf2008-08-17 14:38:41 +0200[diff] [blame]949 s->term_trace);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]950 write(1, trash, len);
951 }
952
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]953 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100[diff] [blame]954 session_process_counters(s);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]955
956 /* let's do a final log if we need it */
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]957 if (s->logs.logwait &&
958 !(s->flags & SN_MONITOR) &&
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]959 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
960 if (s->fe->to_log & LW_REQ)
961 http_sess_log(s);
962 else
963 tcp_sess_log(s);
964 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]965
966 /* the task MUST not be in the run queue anymore */
967 task_delete(t);
968 session_free(s);
969 task_free(t);
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]970 *next = TICK_ETERNITY;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]971}
972
973
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]974extern const char sess_term_cond[8];
975extern const char sess_fin_state[8];
976extern const char *monthname[12];
977const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
978const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
979 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
980 unknown, Set-cookie Rewritten */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]981struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]982struct pool_head *pool2_capture;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]983
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]984/*
985 * send a log for the session when we have enough info about it.
986 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]987 */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]988static void http_sess_log(struct session *s)
989{
990 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
991 struct proxy *fe = s->fe;
992 struct proxy *be = s->be;
993 struct proxy *prx_log;
994 struct http_txn *txn = &s->txn;
995 int tolog;
996 char *uri, *h;
997 char *svid;
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]998 struct tm tm;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]999 static char tmpline[MAX_SYSLOG_LEN];
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]1000 int t_request;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1001 int hdr;
1002
1003 if (fe->logfac1 < 0 && fe->logfac2 < 0)
1004 return;
1005 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1006
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1007 if (s->cli_addr.ss_family == AF_INET)
1008 inet_ntop(AF_INET,
1009 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
1010 pn, sizeof(pn));
1011 else
1012 inet_ntop(AF_INET6,
1013 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
1014 pn, sizeof(pn));
1015
Willy Tarreaub7f694f2008-06-22 17:18:02 +0200[diff] [blame]1016 get_localtime(s->logs.accept_date.tv_sec, &tm);
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1017
1018 /* FIXME: let's limit ourselves to frontend logging for now. */
1019 tolog = fe->to_log;
1020
1021 h = tmpline;
1022 if (fe->to_log & LW_REQHDR &&
1023 txn->req.cap &&
1024 (h < tmpline + sizeof(tmpline) - 10)) {
1025 *(h++) = ' ';
1026 *(h++) = '{';
1027 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
1028 if (hdr)
1029 *(h++) = '|';
1030 if (txn->req.cap[hdr] != NULL)
1031 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
1032 '#', hdr_encode_map, txn->req.cap[hdr]);
1033 }
1034 *(h++) = '}';
1035 }
1036
1037 if (fe->to_log & LW_RSPHDR &&
1038 txn->rsp.cap &&
1039 (h < tmpline + sizeof(tmpline) - 7)) {
1040 *(h++) = ' ';
1041 *(h++) = '{';
1042 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
1043 if (hdr)
1044 *(h++) = '|';
1045 if (txn->rsp.cap[hdr] != NULL)
1046 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
1047 '#', hdr_encode_map, txn->rsp.cap[hdr]);
1048 }
1049 *(h++) = '}';
1050 }
1051
1052 if (h < tmpline + sizeof(tmpline) - 4) {
1053 *(h++) = ' ';
1054 *(h++) = '"';
1055 uri = txn->uri ? txn->uri : "<BADREQ>";
1056 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
1057 '#', url_encode_map, uri);
1058 *(h++) = '"';
1059 }
1060 *h = '\0';
1061
1062 svid = (tolog & LW_SVID) ?
1063 (s->data_source != DATA_SRC_STATS) ?
1064 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
1065
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]1066 t_request = -1;
1067 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
1068 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
1069
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1070 send_log(prx_log, LOG_INFO,
1071 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
1072 " %s %s/%s %d/%d/%d/%d/%s%d %d %s%lld"
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]1073 " %s %s %c%c%c%c %d/%d/%d/%d/%s%u %d/%d%s\n",
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1074 pn,
1075 (s->cli_addr.ss_family == AF_INET) ?
1076 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
1077 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]1078 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
Willy Tarreaub7f694f2008-06-22 17:18:02 +0200[diff] [blame]1079 tm.tm_hour, tm.tm_min, tm.tm_sec, s->logs.accept_date.tv_usec/1000,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1080 fe->id, be->id, svid,
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]1081 t_request,
1082 (s->logs.t_queue >= 0) ? s->logs.t_queue - t_request : -1,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1083 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
1084 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
1085 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
1086 txn->status,
Willy Tarreau8b3977f2008-01-18 11:16:32 +0100[diff] [blame]1087 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_out,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1088 txn->cli_cookie ? txn->cli_cookie : "-",
1089 txn->srv_cookie ? txn->srv_cookie : "-",
1090 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
1091 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
1092 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
1093 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
1094 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]1095 (s->flags & SN_REDISP)?"+":"",
1096 (s->conn_retries>0)?(be->conn_retries - s->conn_retries):be->conn_retries,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1097 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
1098
1099 s->logs.logwait = 0;
1100}
1101
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1102
1103/*
1104 * Capture headers from message starting at <som> according to header list
1105 * <cap_hdr>, and fill the <idx> structure appropriately.
1106 */
1107void capture_headers(char *som, struct hdr_idx *idx,
1108 char **cap, struct cap_hdr *cap_hdr)
1109{
1110 char *eol, *sol, *col, *sov;
1111 int cur_idx;
1112 struct cap_hdr *h;
1113 int len;
1114
1115 sol = som + hdr_idx_first_pos(idx);
1116 cur_idx = hdr_idx_first_idx(idx);
1117
1118 while (cur_idx) {
1119 eol = sol + idx->v[cur_idx].len;
1120
1121 col = sol;
1122 while (col < eol && *col != ':')
1123 col++;
1124
1125 sov = col + 1;
1126 while (sov < eol && http_is_lws[(unsigned char)*sov])
1127 sov++;
1128
1129 for (h = cap_hdr; h; h = h->next) {
1130 if ((h->namelen == col - sol) &&
1131 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1132 if (cap[h->index] == NULL)
1133 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1134 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1135
1136 if (cap[h->index] == NULL) {
1137 Alert("HTTP capture : out of memory.\n");
1138 continue;
1139 }
1140
1141 len = eol - sov;
1142 if (len > h->len)
1143 len = h->len;
1144
1145 memcpy(cap[h->index], sov, len);
1146 cap[h->index][len]=0;
1147 }
1148 }
1149 sol = eol + idx->v[cur_idx].cr + 1;
1150 cur_idx = idx->v[cur_idx].next;
1151 }
1152}
1153
1154
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1155/* either we find an LF at <ptr> or we jump to <bad>.
1156 */
1157#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1158
1159/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1160 * otherwise to <http_msg_ood> with <state> set to <st>.
1161 */
1162#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1163 ptr++; \
1164 if (likely(ptr < end)) \
1165 goto good; \
1166 else { \
1167 state = (st); \
1168 goto http_msg_ood; \
1169 } \
1170 } while (0)
1171
1172
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1173/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1174 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1175 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1176 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1177 * will give undefined results.
1178 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1179 * and that msg->sol points to the beginning of the response.
1180 * If a complete line is found (which implies that at least one CR or LF is
1181 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1182 * returned indicating an incomplete line (which does not mean that parts have
1183 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1184 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1185 * upon next call.
1186 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1187 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1188 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1189 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1190 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1191 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1192const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf,
1193 unsigned int state, const char *ptr, const char *end,
1194 char **ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1195{
1196 __label__
1197 http_msg_rpver,
1198 http_msg_rpver_sp,
1199 http_msg_rpcode,
1200 http_msg_rpcode_sp,
1201 http_msg_rpreason,
1202 http_msg_rpline_eol,
1203 http_msg_ood, /* out of data */
1204 http_msg_invalid;
1205
1206 switch (state) {
1207 http_msg_rpver:
1208 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1209 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1210 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1211
1212 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1213 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1214 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1215 }
1216 goto http_msg_invalid;
1217
1218 http_msg_rpver_sp:
1219 case HTTP_MSG_RPVER_SP:
1220 if (likely(!HTTP_IS_LWS(*ptr))) {
1221 msg->sl.st.c = ptr - msg_buf;
1222 goto http_msg_rpcode;
1223 }
1224 if (likely(HTTP_IS_SPHT(*ptr)))
1225 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1226 /* so it's a CR/LF, this is invalid */
1227 goto http_msg_invalid;
1228
1229 http_msg_rpcode:
1230 case HTTP_MSG_RPCODE:
1231 if (likely(!HTTP_IS_LWS(*ptr)))
1232 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1233
1234 if (likely(HTTP_IS_SPHT(*ptr))) {
1235 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
1236 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1237 }
1238
1239 /* so it's a CR/LF, so there is no reason phrase */
1240 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
1241 http_msg_rsp_reason:
1242 /* FIXME: should we support HTTP responses without any reason phrase ? */
1243 msg->sl.st.r = ptr - msg_buf;
1244 msg->sl.st.r_l = 0;
1245 goto http_msg_rpline_eol;
1246
1247 http_msg_rpcode_sp:
1248 case HTTP_MSG_RPCODE_SP:
1249 if (likely(!HTTP_IS_LWS(*ptr))) {
1250 msg->sl.st.r = ptr - msg_buf;
1251 goto http_msg_rpreason;
1252 }
1253 if (likely(HTTP_IS_SPHT(*ptr)))
1254 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1255 /* so it's a CR/LF, so there is no reason phrase */
1256 goto http_msg_rsp_reason;
1257
1258 http_msg_rpreason:
1259 case HTTP_MSG_RPREASON:
1260 if (likely(!HTTP_IS_CRLF(*ptr)))
1261 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
1262 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
1263 http_msg_rpline_eol:
1264 /* We have seen the end of line. Note that we do not
1265 * necessarily have the \n yet, but at least we know that we
1266 * have EITHER \r OR \n, otherwise the response would not be
1267 * complete. We can then record the response length and return
1268 * to the caller which will be able to register it.
1269 */
1270 msg->sl.st.l = ptr - msg->sol;
1271 return ptr;
1272
1273#ifdef DEBUG_FULL
1274 default:
1275 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1276 exit(1);
1277#endif
1278 }
1279
1280 http_msg_ood:
1281 /* out of data */
1282 if (ret_state)
1283 *ret_state = state;
1284 if (ret_ptr)
1285 *ret_ptr = (char *)ptr;
1286 return NULL;
1287
1288 http_msg_invalid:
1289 /* invalid message */
1290 if (ret_state)
1291 *ret_state = HTTP_MSG_ERROR;
1292 return NULL;
1293}
1294
1295
1296/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1297 * This function parses a request line between <ptr> and <end>, starting with
1298 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1299 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1300 * will give undefined results.
1301 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1302 * and that msg->sol points to the beginning of the request.
1303 * If a complete line is found (which implies that at least one CR or LF is
1304 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1305 * returned indicating an incomplete line (which does not mean that parts have
1306 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1307 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1308 * upon next call.
1309 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1310 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1311 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1312 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1313 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1314 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1315const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf,
1316 unsigned int state, const char *ptr, const char *end,
1317 char **ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1318{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1319 __label__
1320 http_msg_rqmeth,
1321 http_msg_rqmeth_sp,
1322 http_msg_rquri,
1323 http_msg_rquri_sp,
1324 http_msg_rqver,
1325 http_msg_rqline_eol,
1326 http_msg_ood, /* out of data */
1327 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1328
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1329 switch (state) {
1330 http_msg_rqmeth:
1331 case HTTP_MSG_RQMETH:
1332 if (likely(HTTP_IS_TOKEN(*ptr)))
1333 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1334
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1335 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1336 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1337 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1338 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1339
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1340 if (likely(HTTP_IS_CRLF(*ptr))) {
1341 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1342 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1343 http_msg_req09_uri:
1344 msg->sl.rq.u = ptr - msg_buf;
1345 http_msg_req09_uri_e:
1346 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1347 http_msg_req09_ver:
1348 msg->sl.rq.v = ptr - msg_buf;
1349 msg->sl.rq.v_l = 0;
1350 goto http_msg_rqline_eol;
1351 }
1352 goto http_msg_invalid;
1353
1354 http_msg_rqmeth_sp:
1355 case HTTP_MSG_RQMETH_SP:
1356 if (likely(!HTTP_IS_LWS(*ptr))) {
1357 msg->sl.rq.u = ptr - msg_buf;
1358 goto http_msg_rquri;
1359 }
1360 if (likely(HTTP_IS_SPHT(*ptr)))
1361 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1362 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1363 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1364
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1365 http_msg_rquri:
1366 case HTTP_MSG_RQURI:
1367 if (likely(!HTTP_IS_LWS(*ptr)))
1368 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1369
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1370 if (likely(HTTP_IS_SPHT(*ptr))) {
1371 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1372 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1373 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1374
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1375 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1376 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1377
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1378 http_msg_rquri_sp:
1379 case HTTP_MSG_RQURI_SP:
1380 if (likely(!HTTP_IS_LWS(*ptr))) {
1381 msg->sl.rq.v = ptr - msg_buf;
1382 goto http_msg_rqver;
1383 }
1384 if (likely(HTTP_IS_SPHT(*ptr)))
1385 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1386 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1387 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1388
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1389 http_msg_rqver:
1390 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1391 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1392 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1393
1394 if (likely(HTTP_IS_CRLF(*ptr))) {
1395 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1396 http_msg_rqline_eol:
1397 /* We have seen the end of line. Note that we do not
1398 * necessarily have the \n yet, but at least we know that we
1399 * have EITHER \r OR \n, otherwise the request would not be
1400 * complete. We can then record the request length and return
1401 * to the caller which will be able to register it.
1402 */
1403 msg->sl.rq.l = ptr - msg->sol;
1404 return ptr;
1405 }
1406
1407 /* neither an HTTP_VER token nor a CRLF */
1408 goto http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1409
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1410#ifdef DEBUG_FULL
1411 default:
1412 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1413 exit(1);
1414#endif
1415 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1416
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1417 http_msg_ood:
1418 /* out of data */
1419 if (ret_state)
1420 *ret_state = state;
1421 if (ret_ptr)
1422 *ret_ptr = (char *)ptr;
1423 return NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1424
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1425 http_msg_invalid:
1426 /* invalid message */
1427 if (ret_state)
1428 *ret_state = HTTP_MSG_ERROR;
1429 return NULL;
1430}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1431
1432
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1433/*
1434 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1435 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1436 * when data are missing and recalled at the exact same location with no
1437 * information loss. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1438 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
1439 * fields.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1440 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1441void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1442{
1443 __label__
1444 http_msg_rqbefore,
1445 http_msg_rqbefore_cr,
1446 http_msg_rqmeth,
1447 http_msg_rqline_end,
1448 http_msg_hdr_first,
1449 http_msg_hdr_name,
1450 http_msg_hdr_l1_sp,
1451 http_msg_hdr_l1_lf,
1452 http_msg_hdr_l1_lws,
1453 http_msg_hdr_val,
1454 http_msg_hdr_l2_lf,
1455 http_msg_hdr_l2_lws,
1456 http_msg_complete_header,
1457 http_msg_last_lf,
1458 http_msg_ood, /* out of data */
1459 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1460
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1461 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1462 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1463
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1464 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1465 ptr = buf->lr;
1466 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1467
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1468 if (unlikely(ptr >= end))
1469 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1470
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1471 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1472 /*
1473 * First, states that are specific to the response only.
1474 * We check them first so that request and headers are
1475 * closer to each other (accessed more often).
1476 */
1477 http_msg_rpbefore:
1478 case HTTP_MSG_RPBEFORE:
1479 if (likely(HTTP_IS_TOKEN(*ptr))) {
1480 if (likely(ptr == buf->data)) {
1481 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1482 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1483 } else {
1484#if PARSE_PRESERVE_EMPTY_LINES
1485 /* only skip empty leading lines, don't remove them */
1486 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1487 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1488#else
1489 /* Remove empty leading lines, as recommended by
1490 * RFC2616. This takes a lot of time because we
1491 * must move all the buffer backwards, but this
1492 * is rarely needed. The method above will be
1493 * cleaner when we'll be able to start sending
1494 * the request from any place in the buffer.
1495 */
1496 buf->lr = ptr;
1497 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1498 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1499 msg->sol = buf->data;
1500 ptr = buf->data;
1501 end = buf->r;
1502#endif
1503 }
1504 hdr_idx_init(idx);
1505 state = HTTP_MSG_RPVER;
1506 goto http_msg_rpver;
1507 }
1508
1509 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1510 goto http_msg_invalid;
1511
1512 if (unlikely(*ptr == '\n'))
1513 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1514 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1515 /* stop here */
1516
1517 http_msg_rpbefore_cr:
1518 case HTTP_MSG_RPBEFORE_CR:
1519 EXPECT_LF_HERE(ptr, http_msg_invalid);
1520 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1521 /* stop here */
1522
1523 http_msg_rpver:
1524 case HTTP_MSG_RPVER:
1525 case HTTP_MSG_RPVER_SP:
1526 case HTTP_MSG_RPCODE:
1527 case HTTP_MSG_RPCODE_SP:
1528 case HTTP_MSG_RPREASON:
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1529 ptr = (char *)http_parse_stsline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1530 &buf->lr, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1531 if (unlikely(!ptr))
1532 return;
1533
1534 /* we have a full response and we know that we have either a CR
1535 * or an LF at <ptr>.
1536 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1537 //fprintf(stderr,"som=%d rq.l=%d *ptr=0x%02x\n", msg->som, msg->sl.st.l, *ptr);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1538 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1539
1540 msg->sol = ptr;
1541 if (likely(*ptr == '\r'))
1542 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1543 goto http_msg_rpline_end;
1544
1545 http_msg_rpline_end:
1546 case HTTP_MSG_RPLINE_END:
1547 /* msg->sol must point to the first of CR or LF. */
1548 EXPECT_LF_HERE(ptr, http_msg_invalid);
1549 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1550 /* stop here */
1551
1552 /*
1553 * Second, states that are specific to the request only
1554 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1555 http_msg_rqbefore:
1556 case HTTP_MSG_RQBEFORE:
1557 if (likely(HTTP_IS_TOKEN(*ptr))) {
1558 if (likely(ptr == buf->data)) {
1559 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1560 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1561 } else {
1562#if PARSE_PRESERVE_EMPTY_LINES
1563 /* only skip empty leading lines, don't remove them */
1564 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1565 msg->som = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1566#else
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1567 /* Remove empty leading lines, as recommended by
1568 * RFC2616. This takes a lot of time because we
1569 * must move all the buffer backwards, but this
1570 * is rarely needed. The method above will be
1571 * cleaner when we'll be able to start sending
1572 * the request from any place in the buffer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1573 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1574 buf->lr = ptr;
1575 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1576 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1577 msg->sol = buf->data;
1578 ptr = buf->data;
1579 end = buf->r;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1580#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1581 }
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1582 /* we will need this when keep-alive will be supported
1583 hdr_idx_init(idx);
1584 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1585 state = HTTP_MSG_RQMETH;
1586 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1587 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1588
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1589 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1590 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1591
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1592 if (unlikely(*ptr == '\n'))
1593 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1594 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1595 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1596
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1597 http_msg_rqbefore_cr:
1598 case HTTP_MSG_RQBEFORE_CR:
1599 EXPECT_LF_HERE(ptr, http_msg_invalid);
1600 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1601 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1602
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1603 http_msg_rqmeth:
1604 case HTTP_MSG_RQMETH:
1605 case HTTP_MSG_RQMETH_SP:
1606 case HTTP_MSG_RQURI:
1607 case HTTP_MSG_RQURI_SP:
1608 case HTTP_MSG_RQVER:
1609 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1610 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1611 if (unlikely(!ptr))
1612 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1613
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1614 /* we have a full request and we know that we have either a CR
1615 * or an LF at <ptr>.
1616 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1617 //fprintf(stderr,"som=%d rq.l=%d *ptr=0x%02x\n", msg->som, msg->sl.rq.l, *ptr);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1618 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1619
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1620 msg->sol = ptr;
1621 if (likely(*ptr == '\r'))
1622 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1623 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1624
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1625 http_msg_rqline_end:
1626 case HTTP_MSG_RQLINE_END:
1627 /* check for HTTP/0.9 request : no version information available.
1628 * msg->sol must point to the first of CR or LF.
1629 */
1630 if (unlikely(msg->sl.rq.v_l == 0))
1631 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1632
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1633 EXPECT_LF_HERE(ptr, http_msg_invalid);
1634 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1635 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1636
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1637 /*
1638 * Common states below
1639 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1640 http_msg_hdr_first:
1641 case HTTP_MSG_HDR_FIRST:
1642 msg->sol = ptr;
1643 if (likely(!HTTP_IS_CRLF(*ptr))) {
1644 goto http_msg_hdr_name;
1645 }
1646
1647 if (likely(*ptr == '\r'))
1648 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1649 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1650
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1651 http_msg_hdr_name:
1652 case HTTP_MSG_HDR_NAME:
1653 /* assumes msg->sol points to the first char */
1654 if (likely(HTTP_IS_TOKEN(*ptr)))
1655 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1656
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1657 if (likely(*ptr == ':')) {
1658 msg->col = ptr - buf->data;
1659 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1660 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1661
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1662 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1663
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1664 http_msg_hdr_l1_sp:
1665 case HTTP_MSG_HDR_L1_SP:
1666 /* assumes msg->sol points to the first char and msg->col to the colon */
1667 if (likely(HTTP_IS_SPHT(*ptr)))
1668 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]1669
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1670 /* header value can be basically anything except CR/LF */
1671 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1672
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1673 if (likely(!HTTP_IS_CRLF(*ptr))) {
1674 goto http_msg_hdr_val;
1675 }
1676
1677 if (likely(*ptr == '\r'))
1678 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1679 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1680
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1681 http_msg_hdr_l1_lf:
1682 case HTTP_MSG_HDR_L1_LF:
1683 EXPECT_LF_HERE(ptr, http_msg_invalid);
1684 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]1685
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1686 http_msg_hdr_l1_lws:
1687 case HTTP_MSG_HDR_L1_LWS:
1688 if (likely(HTTP_IS_SPHT(*ptr))) {
1689 /* replace HT,CR,LF with spaces */
1690 for (; buf->data+msg->sov < ptr; msg->sov++)
1691 buf->data[msg->sov] = ' ';
1692 goto http_msg_hdr_l1_sp;
1693 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1694 /* we had a header consisting only in spaces ! */
1695 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1696 goto http_msg_complete_header;
1697
1698 http_msg_hdr_val:
1699 case HTTP_MSG_HDR_VAL:
1700 /* assumes msg->sol points to the first char, msg->col to the
1701 * colon, and msg->sov points to the first character of the
1702 * value.
1703 */
1704 if (likely(!HTTP_IS_CRLF(*ptr)))
1705 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1706
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1707 msg->eol = ptr;
1708 /* Note: we could also copy eol into ->eoh so that we have the
1709 * real header end in case it ends with lots of LWS, but is this
1710 * really needed ?
1711 */
1712 if (likely(*ptr == '\r'))
1713 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1714 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1715
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1716 http_msg_hdr_l2_lf:
1717 case HTTP_MSG_HDR_L2_LF:
1718 EXPECT_LF_HERE(ptr, http_msg_invalid);
1719 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]1720
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1721 http_msg_hdr_l2_lws:
1722 case HTTP_MSG_HDR_L2_LWS:
1723 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1724 /* LWS: replace HT,CR,LF with spaces */
1725 for (; msg->eol < ptr; msg->eol++)
1726 *msg->eol = ' ';
1727 goto http_msg_hdr_val;
1728 }
1729 http_msg_complete_header:
1730 /*
1731 * It was a new header, so the last one is finished.
1732 * Assumes msg->sol points to the first char, msg->col to the
1733 * colon, msg->sov points to the first character of the value
1734 * and msg->eol to the first CR or LF so we know how the line
1735 * ends. We insert last header into the index.
1736 */
1737 /*
1738 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1739 write(2, msg->sol, msg->eol-msg->sol);
1740 fprintf(stderr,"\n");
1741 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1742
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1743 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1744 idx, idx->tail) < 0))
1745 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1746
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1747 msg->sol = ptr;
1748 if (likely(!HTTP_IS_CRLF(*ptr))) {
1749 goto http_msg_hdr_name;
1750 }
1751
1752 if (likely(*ptr == '\r'))
1753 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1754 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1755
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1756 http_msg_last_lf:
1757 case HTTP_MSG_LAST_LF:
1758 /* Assumes msg->sol points to the first of either CR or LF */
1759 EXPECT_LF_HERE(ptr, http_msg_invalid);
1760 ptr++;
1761 buf->lr = ptr;
1762 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1763 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1764 return;
1765#ifdef DEBUG_FULL
1766 default:
1767 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1768 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1769#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1770 }
1771 http_msg_ood:
1772 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1773 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1774 buf->lr = ptr;
1775 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1776
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1777 http_msg_invalid:
1778 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1779 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1780 return;
1781}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1782
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1783/* This function performs all the processing enabled for the current request.
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1784 * It normally returns zero, but may return 1 if it absolutely needs to be
1785 * called again after other functions. It relies on buffers flags, and updates
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1786 * t->req->analysers. It might make sense to explode it into several other
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1787 * functions. Its behaviour is rather simple :
1788 * - all enabled analysers are called in turn from the lower to the higher
1789 * bit.
1790 * - if an analyser does not have enough data, it must return without calling
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]1791 * other ones. It should also probably reset the BF_WRITE_ENA bit to ensure
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1792 * that unprocessed data will not be forwarded. But that probably depends on
1793 * the protocol. Generally it is not reset in case of errors.
1794 * - if an analyser has enough data, it just has to pass on to the next
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]1795 * analyser without touching BF_WRITE_ENA (it is enabled prior to
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1796 * analysis).
1797 * - if an analyser thinks it has no added value anymore staying here, it must
1798 * reset its bit from the analysers flags in order not to be called anymore.
1799 *
1800 * In the future, analysers should be able to indicate that they want to be
1801 * called after XXX bytes have been received (or transfered), and the min of
1802 * all's wishes will be used to ring back (unless a special condition occurs).
1803 *
1804 *
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1805 */
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1806int process_request(struct session *t)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1807{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1808 struct buffer *req = t->req;
1809 struct buffer *rep = t->rep;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1810
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]1811 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]1812 now_ms, __FUNCTION__,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]1813 t,
1814 req,
1815 req->rex, req->wex,
1816 req->flags,
1817 req->l,
1818 req->analysers);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1819
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1820 /* The tcp-inspect analyser is always called alone */
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1821 if (req->analysers & AN_REQ_INSPECT) {
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1822 struct tcp_rule *rule;
1823 int partial;
1824
Willy Tarreauf495ddf2008-08-17 14:38:41 +0200[diff] [blame]1825 /* We will abort if we encounter a read error. In theory, we
1826 * should not abort if we get a close, it might be valid,
1827 * although very unlikely. FIXME: we'll abort for now, this
1828 * will be easier to change later.
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1829 */
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1830 if (req->flags & BF_READ_ERROR) {
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1831 req->analysers = 0;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1832 //t->fe->failed_req++;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1833 if (!(t->flags & SN_ERR_MASK))
1834 t->flags |= SN_ERR_CLICL;
1835 if (!(t->flags & SN_FINST_MASK))
1836 t->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1837 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1838 }
1839
1840 /* Abort if client read timeout has expired */
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1841 else if (req->flags & BF_READ_TIMEOUT) {
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1842 req->analysers = 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1843 t->fe->failed_req++;
1844 if (!(t->flags & SN_ERR_MASK))
1845 t->flags |= SN_ERR_CLITO;
1846 if (!(t->flags & SN_FINST_MASK))
1847 t->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1848 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1849 }
1850
1851 /* We don't know whether we have enough data, so must proceed
1852 * this way :
1853 * - iterate through all rules in their declaration order
1854 * - if one rule returns MISS, it means the inspect delay is
1855 * not over yet, then return immediately, otherwise consider
1856 * it as a non-match.
1857 * - if one rule returns OK, then return OK
1858 * - if one rule returns KO, then return KO
1859 */
1860
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]1861 if (req->flags & BF_SHUTR || tick_is_expired(req->analyse_exp, now_ms))
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1862 partial = 0;
1863 else
1864 partial = ACL_PARTIAL;
1865
1866 list_for_each_entry(rule, &t->fe->tcp_req.inspect_rules, list) {
1867 int ret = ACL_PAT_PASS;
1868
1869 if (rule->cond) {
1870 ret = acl_exec_cond(rule->cond, t->fe, t, NULL, ACL_DIR_REQ | partial);
1871 if (ret == ACL_PAT_MISS) {
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]1872 buffer_write_dis(req);
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1873 /* just set the request timeout once at the beginning of the request */
Willy Tarreauffab5b42008-08-17 18:03:28 +0200[diff] [blame]1874 if (!tick_isset(req->analyse_exp))
1875 req->analyse_exp = tick_add_ifset(now_ms, t->fe->tcp_req.inspect_delay);
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1876 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1877 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1878
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1879 ret = acl_pass(ret);
1880 if (rule->cond->pol == ACL_COND_UNLESS)
1881 ret = !ret;
1882 }
1883
1884 if (ret) {
1885 /* we have a matching rule. */
1886 if (rule->action == TCP_ACT_REJECT) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]1887 buffer_abort(req);
1888 buffer_abort(rep);
1889 //FIXME: this delete this
1890 //fd_delete(t->cli_fd);
1891 //t->cli_state = CL_STCLOSE;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1892 req->analysers = 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1893 t->fe->failed_req++;
1894 if (!(t->flags & SN_ERR_MASK))
1895 t->flags |= SN_ERR_PRXCOND;
1896 if (!(t->flags & SN_FINST_MASK))
1897 t->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1898 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1899 }
1900 /* otherwise accept */
1901 break;
1902 }
1903 }
1904
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]1905 /* if we get there, it means we have no rule which matches, or
1906 * we have an explicit accept, so we apply the default accept.
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1907 */
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1908 req->analysers &= ~AN_REQ_INSPECT;
Willy Tarreauffab5b42008-08-17 18:03:28 +0200[diff] [blame]1909 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1910 }
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]1911
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1912 if (req->analysers & AN_REQ_HTTP_HDR) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1913 /*
1914 * Now parse the partial (or complete) lines.
1915 * We will check the request syntax, and also join multi-line
1916 * headers. An index of all the lines will be elaborated while
1917 * parsing.
1918 *
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1919 * For the parsing, we use a 28 states FSM.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1920 *
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1921 * Here is the information we currently have :
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1922 * req->data + req->som = beginning of request
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1923 * req->data + req->eoh = end of processed headers / start of current one
1924 * req->data + req->eol = end of current header or line (LF or CRLF)
1925 * req->lr = first non-visited byte
1926 * req->r = end of data
1927 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1928
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1929 int cur_idx;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1930 struct http_txn *txn = &t->txn;
1931 struct http_msg *msg = &txn->req;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1932 struct proxy *cur_proxy;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1933
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1934 if (likely(req->lr < req->r))
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1935 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1936
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1937 /* 1: we might have to print this header in debug mode */
1938 if (unlikely((global.mode & MODE_DEBUG) &&
1939 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1940 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1941 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1942
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1943 sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1944 eol = sol + msg->sl.rq.l;
1945 debug_hdr("clireq", t, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1946
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1947 sol += hdr_idx_first_pos(&txn->hdr_idx);
1948 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1949
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1950 while (cur_idx) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1951 eol = sol + txn->hdr_idx.v[cur_idx].len;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1952 debug_hdr("clihdr", t, sol, eol);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1953 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1954 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1955 }
1956 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1957
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1958
1959 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1960 * Now we quickly check if we have found a full valid request.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1961 * If not so, we check the FD and buffer states before leaving.
1962 * A full request is indicated by the fact that we have seen
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1963 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
1964 * requests are checked first.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1965 *
1966 */
1967
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1968 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1969 /*
1970 * First, let's catch bad requests.
1971 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1972 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1973 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1974
1975 /* 1: Since we are in header mode, if there's no space
1976 * left for headers, we won't be able to free more
1977 * later, so the session will never terminate. We
1978 * must terminate it now.
1979 */
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]1980 if (unlikely(req->flags & BF_FULL)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1981 /* FIXME: check if URI is set and return Status
1982 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1983 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1984 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1985 }
1986
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1987 /* 2: have we encountered a read error ? */
1988 else if (req->flags & BF_READ_ERROR) {
1989 /* we cannot return any message on error */
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1990 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1991 req->analysers = 0;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1992 //t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1993 if (!(t->flags & SN_ERR_MASK))
1994 t->flags |= SN_ERR_CLICL;
1995 if (!(t->flags & SN_FINST_MASK))
1996 t->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1997 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1998 }
1999
2000 /* 3: has the read timeout expired ? */
Willy Tarreauffab5b42008-08-17 18:03:28 +0200[diff] [blame]2001 else if (req->flags & BF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2002 /* read timeout : give up with an error message. */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2003 txn->status = 408;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2004 client_retnclose(t, error_message(t, HTTP_ERR_408));
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2005 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2006 req->analysers = 0;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]2007 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2008 if (!(t->flags & SN_ERR_MASK))
2009 t->flags |= SN_ERR_CLITO;
2010 if (!(t->flags & SN_FINST_MASK))
2011 t->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2012 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2013 }
2014
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2015 /* 4: have we encountered a close ? */
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]2016 else if (req->flags & BF_SHUTR) {
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2017 txn->status = 400;
2018 client_retnclose(t, error_message(t, HTTP_ERR_400));
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2019 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2020 req->analysers = 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2021 t->fe->failed_req++;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2022
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2023 if (!(t->flags & SN_ERR_MASK))
2024 t->flags |= SN_ERR_CLICL;
2025 if (!(t->flags & SN_FINST_MASK))
2026 t->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2027 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2028 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2029
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2030 buffer_write_dis(req);
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2031 /* just set the request timeout once at the beginning of the request */
Willy Tarreauffab5b42008-08-17 18:03:28 +0200[diff] [blame]2032 if (!tick_isset(req->analyse_exp))
2033 req->analyse_exp = tick_add_ifset(now_ms, t->fe->timeout.httpreq);
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2034
2035 /* we're not ready yet */
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2036 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2037 }
2038
2039
2040 /****************************************************************
2041 * More interesting part now : we know that we have a complete *
2042 * request which at least looks like HTTP. We have an indicator *
2043 * of each header's length, so we can parse them quickly. *
2044 ****************************************************************/
2045
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2046 req->analysers &= ~AN_REQ_HTTP_HDR;
Willy Tarreauffab5b42008-08-17 18:03:28 +0200[diff] [blame]2047 req->analyse_exp = TICK_ETERNITY;
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]2048
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2049 /* ensure we keep this pointer to the beginning of the message */
2050 msg->sol = req->data + msg->som;
2051
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2052 /*
2053 * 1: identify the method
2054 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2055 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2056
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2057 /* we can make use of server redirect on GET and HEAD */
2058 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2059 t->flags |= SN_REDIRECTABLE;
2060
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2061 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2062 * 2: check if the URI matches the monitor_uri.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2063 * We have to do this for every request which gets in, because
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2064 * the monitor-uri is defined by the frontend.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2065 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2066 if (unlikely((t->fe->monitor_uri_len != 0) &&
2067 (t->fe->monitor_uri_len == msg->sl.rq.u_l) &&
2068 !memcmp(&req->data[msg->sl.rq.u],
2069 t->fe->monitor_uri,
2070 t->fe->monitor_uri_len))) {
2071 /*
2072 * We have found the monitor URI
2073 */
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2074 struct acl_cond *cond;
2075 cur_proxy = t->fe;
2076
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2077 t->flags |= SN_MONITOR;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2078
2079 /* Check if we want to fail this monitor request or not */
2080 list_for_each_entry(cond, &cur_proxy->mon_fail_cond, list) {
2081 int ret = acl_exec_cond(cond, cur_proxy, t, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2082
2083 ret = acl_pass(ret);
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2084 if (cond->pol == ACL_COND_UNLESS)
2085 ret = !ret;
2086
2087 if (ret) {
2088 /* we fail this request, let's return 503 service unavail */
2089 txn->status = 503;
2090 client_retnclose(t, error_message(t, HTTP_ERR_503));
2091 goto return_prx_cond;
2092 }
2093 }
2094
2095 /* nothing to fail, let's reply normaly */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2096 txn->status = 200;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2097 client_retnclose(t, &http_200_chunk);
2098 goto return_prx_cond;
2099 }
2100
2101 /*
2102 * 3: Maybe we have to copy the original REQURI for the logs ?
2103 * Note: we cannot log anymore if the request has been
2104 * classified as invalid.
2105 */
2106 if (unlikely(t->logs.logwait & LW_REQ)) {
2107 /* we have a complete HTTP request that we must log */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]2108 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2109 int urilen = msg->sl.rq.l;
2110
2111 if (urilen >= REQURI_LEN)
2112 urilen = REQURI_LEN - 1;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2113 memcpy(txn->uri, &req->data[msg->som], urilen);
2114 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2115
2116 if (!(t->logs.logwait &= ~LW_REQ))
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]2117 http_sess_log(t);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2118 } else {
2119 Alert("HTTP logging : out of memory.\n");
2120 }
2121 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2122
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2123
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2124 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
2125 if (unlikely(msg->sl.rq.v_l == 0)) {
2126 int delta;
2127 char *cur_end;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2128 msg->sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2129 cur_end = msg->sol + msg->sl.rq.l;
2130 delta = 0;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2131
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2132 if (msg->sl.rq.u_l == 0) {
2133 /* if no URI was set, add "/" */
2134 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
2135 cur_end += delta;
2136 msg->eoh += delta;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2137 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2138 /* add HTTP version */
2139 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
2140 msg->eoh += delta;
2141 cur_end += delta;
2142 cur_end = (char *)http_parse_reqline(msg, req->data,
2143 HTTP_MSG_RQMETH,
2144 msg->sol, cur_end + 1,
2145 NULL, NULL);
2146 if (unlikely(!cur_end))
2147 goto return_bad_req;
2148
2149 /* we have a full HTTP/1.0 request now and we know that
2150 * we have either a CR or an LF at <ptr>.
2151 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2152 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2153 }
2154
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2155
2156 /* 5: we may need to capture headers */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2157 if (unlikely((t->logs.logwait & LW_REQHDR) && t->fe->req_cap))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]2158 capture_headers(req->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2159 txn->req.cap, t->fe->req_cap);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2160
2161 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2162 * 6: we will have to evaluate the filters.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2163 * As opposed to version 1.2, now they will be evaluated in the
2164 * filters order and not in the header order. This means that
2165 * each filter has to be validated among all headers.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2166 *
2167 * We can now check whether we want to switch to another
2168 * backend, in which case we will re-check the backend's
2169 * filters and various options. In order to support 3-level
2170 * switching, here's how we should proceed :
2171 *
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2172 * a) run be.
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]2173 * if (switch) then switch ->be to the new backend.
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2174 * b) run be if (be != fe).
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2175 * There cannot be any switch from there, so ->be cannot be
2176 * changed anymore.
2177 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]2178 * => filters always apply to ->be, then ->be may change.
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2179 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]2180 * The response path will be able to apply either ->be, or
2181 * ->be then ->fe filters in order to match the reverse of
2182 * the forward sequence.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2183 */
2184
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2185 do {
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]2186 struct acl_cond *cond;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]2187 struct redirect_rule *rule;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2188 struct proxy *rule_set = t->be;
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]2189 cur_proxy = t->be;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2190
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]2191 /* first check whether we have some ACLs set to redirect this request */
2192 list_for_each_entry(rule, &cur_proxy->redirect_rules, list) {
2193 int ret = acl_exec_cond(rule->cond, cur_proxy, t, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2194
2195 ret = acl_pass(ret);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]2196 if (rule->cond->pol == ACL_COND_UNLESS)
2197 ret = !ret;
2198
2199 if (ret) {
2200 struct chunk rdr = { trash, 0 };
2201 const char *msg_fmt;
2202
2203 /* build redirect message */
2204 switch(rule->code) {
2205 case 303:
2206 rdr.len = strlen(HTTP_303);
2207 msg_fmt = HTTP_303;
2208 break;
2209 case 301:
2210 rdr.len = strlen(HTTP_301);
2211 msg_fmt = HTTP_301;
2212 break;
2213 case 302:
2214 default:
2215 rdr.len = strlen(HTTP_302);
2216 msg_fmt = HTTP_302;
2217 break;
2218 }
2219
2220 if (unlikely(rdr.len > sizeof(trash)))
2221 goto return_bad_req;
2222 memcpy(rdr.str, msg_fmt, rdr.len);
2223
2224 switch(rule->type) {
2225 case REDIRECT_TYPE_PREFIX: {
2226 const char *path;
2227 int pathlen;
2228
2229 path = http_get_path(txn);
2230 /* build message using path */
2231 if (path) {
2232 pathlen = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
2233 } else {
2234 path = "/";
2235 pathlen = 1;
2236 }
2237
2238 if (rdr.len + rule->rdr_len + pathlen > sizeof(trash) - 4)
2239 goto return_bad_req;
2240
2241 /* add prefix */
2242 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2243 rdr.len += rule->rdr_len;
2244
2245 /* add path */
2246 memcpy(rdr.str + rdr.len, path, pathlen);
2247 rdr.len += pathlen;
2248 break;
2249 }
2250 case REDIRECT_TYPE_LOCATION:
2251 default:
2252 if (rdr.len + rule->rdr_len > sizeof(trash) - 4)
2253 goto return_bad_req;
2254
2255 /* add location */
2256 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2257 rdr.len += rule->rdr_len;
2258 break;
2259 }
2260
2261 /* add end of headers */
2262 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
2263 rdr.len += 4;
2264
2265 txn->status = rule->code;
2266 /* let's log the request time */
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]2267 t->logs.tv_request = now;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]2268 client_retnclose(t, &rdr);
2269 goto return_prx_cond;
2270 }
2271 }
2272
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]2273 /* first check whether we have some ACLs set to block this request */
2274 list_for_each_entry(cond, &cur_proxy->block_cond, list) {
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]2275 int ret = acl_exec_cond(cond, cur_proxy, t, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2276
2277 ret = acl_pass(ret);
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]2278 if (cond->pol == ACL_COND_UNLESS)
2279 ret = !ret;
2280
2281 if (ret) {
2282 txn->status = 403;
2283 /* let's log the request time */
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]2284 t->logs.tv_request = now;
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]2285 client_retnclose(t, error_message(t, HTTP_ERR_403));
2286 goto return_prx_cond;
2287 }
2288 }
2289
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2290 /* try headers filters */
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2291 if (rule_set->req_exp != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2292 if (apply_filters_to_request(t, req, rule_set->req_exp) < 0)
2293 goto return_bad_req;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2294 }
2295
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2296 if (!(t->flags & SN_BE_ASSIGNED) && (t->be != cur_proxy)) {
2297 /* to ensure correct connection accounting on
2298 * the backend, we count the connection for the
2299 * one managing the queue.
2300 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2301 t->be->beconn++;
2302 if (t->be->beconn > t->be->beconn_max)
2303 t->be->beconn_max = t->be->beconn;
2304 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2305 t->flags |= SN_BE_ASSIGNED;
2306 }
2307
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2308 /* has the request been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2309 if (txn->flags & TX_CLDENY) {
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2310 /* no need to go further */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2311 txn->status = 403;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2312 /* let's log the request time */
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]2313 t->logs.tv_request = now;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2314 client_retnclose(t, error_message(t, HTTP_ERR_403));
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2315 goto return_prx_cond;
2316 }
2317
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2318 /* We might have to check for "Connection:" */
Krzysztof Oledzki336d4752007-12-25 02:40:22 +0100[diff] [blame]2319 if (((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2320 !(t->flags & SN_CONN_CLOSED)) {
2321 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2322 int cur_idx, old_idx, delta, val;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2323 struct hdr_idx_elem *cur_hdr;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2324
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2325 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2326 old_idx = 0;
2327
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2328 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2329 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2330 cur_ptr = cur_next;
2331 cur_end = cur_ptr + cur_hdr->len;
2332 cur_next = cur_end + cur_hdr->cr + 1;
2333
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2334 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2335 if (val) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2336 /* 3 possibilities :
2337 * - we have already set Connection: close,
2338 * so we remove this line.
2339 * - we have not yet set Connection: close,
2340 * but this line indicates close. We leave
2341 * it untouched and set the flag.
2342 * - we have not yet set Connection: close,
2343 * and this line indicates non-close. We
2344 * replace it.
2345 */
2346 if (t->flags & SN_CONN_CLOSED) {
2347 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2348 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2349 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2350 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2351 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2352 cur_hdr->len = 0;
2353 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2354 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2355 delta = buffer_replace2(req, cur_ptr + val, cur_end,
2356 "close", 5);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2357 cur_next += delta;
2358 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2359 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2360 }
2361 t->flags |= SN_CONN_CLOSED;
2362 }
2363 }
2364 old_idx = cur_idx;
2365 }
Willy Tarreauf2f0ee82007-03-30 12:02:43 +0200[diff] [blame]2366 }
2367 /* add request headers from the rule sets in the same order */
2368 for (cur_idx = 0; cur_idx < rule_set->nb_reqadd; cur_idx++) {
2369 if (unlikely(http_header_add_tail(req,
2370 &txn->req,
2371 &txn->hdr_idx,
2372 rule_set->req_add[cur_idx])) < 0)
2373 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2374 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2375
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2376 /* check if stats URI was requested, and if an auth is needed */
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]2377 if (rule_set->uri_auth != NULL &&
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2378 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2379 /* we have to check the URI and auth for this request.
2380 * FIXME!!! that one is rather dangerous, we want to
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2381 * make it follow standard rules (eg: clear req->analysers).
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2382 */
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2383 if (stats_check_uri_auth(t, rule_set))
2384 return 1;
2385 }
2386
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2387 /* now check whether we have some switching rules for this request */
2388 if (!(t->flags & SN_BE_ASSIGNED)) {
2389 struct switching_rule *rule;
2390
2391 list_for_each_entry(rule, &cur_proxy->switching_rules, list) {
2392 int ret;
2393
2394 ret = acl_exec_cond(rule->cond, cur_proxy, t, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2395
2396 ret = acl_pass(ret);
Willy Tarreaua8cfa342008-07-09 11:23:31 +0200[diff] [blame]2397 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2398 ret = !ret;
2399
2400 if (ret) {
2401 t->be = rule->be.backend;
2402 t->be->beconn++;
2403 if (t->be->beconn > t->be->beconn_max)
2404 t->be->beconn_max = t->be->beconn;
2405 t->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2406
2407 /* assign new parameters to the session from the new backend */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2408 t->rep->rto = t->req->wto = t->be->timeout.server;
2409 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2410 t->conn_retries = t->be->conn_retries;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2411 t->flags |= SN_BE_ASSIGNED;
2412 break;
2413 }
2414 }
2415 }
2416
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]2417 if (!(t->flags & SN_BE_ASSIGNED) && cur_proxy->defbe.be) {
2418 /* No backend was set, but there was a default
2419 * backend set in the frontend, so we use it and
2420 * loop again.
2421 */
2422 t->be = cur_proxy->defbe.be;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2423 t->be->beconn++;
2424 if (t->be->beconn > t->be->beconn_max)
2425 t->be->beconn_max = t->be->beconn;
2426 t->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2427
2428 /* assign new parameters to the session from the new backend */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2429 t->rep->rto = t->req->wto = t->be->timeout.server;
2430 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2431 t->conn_retries = t->be->conn_retries;
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]2432 t->flags |= SN_BE_ASSIGNED;
2433 }
2434 } while (t->be != cur_proxy); /* we loop only if t->be has changed */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2435
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2436
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2437 if (!(t->flags & SN_BE_ASSIGNED)) {
2438 /* To ensure correct connection accounting on
2439 * the backend, we count the connection for the
2440 * one managing the queue.
2441 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2442 t->be->beconn++;
2443 if (t->be->beconn > t->be->beconn_max)
2444 t->be->beconn_max = t->be->beconn;
2445 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2446 t->flags |= SN_BE_ASSIGNED;
2447 }
2448
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2449 /*
2450 * Right now, we know that we have processed the entire headers
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2451 * and that unwanted requests have been filtered out. We can do
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2452 * whatever we want with the remaining request. Also, now we
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]2453 * may have separate values for ->fe, ->be.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2454 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2455
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]2456 /*
2457 * If HTTP PROXY is set we simply get remote server address
2458 * parsing incoming request.
2459 */
2460 if ((t->be->options & PR_O_HTTP_PROXY) && !(t->flags & SN_ADDR_SET)) {
2461 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &t->srv_addr);
2462 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2463
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2464 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2465 * 7: the appsession cookie was looked up very early in 1.2,
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2466 * so let's do the same now.
2467 */
2468
2469 /* It needs to look into the URI */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2470 if (t->be->appsession_name) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2471 get_srv_from_appsession(t, &req->data[msg->som], msg->sl.rq.l);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2472 }
2473
2474
2475 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2476 * 8: Now we can work with the cookies.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2477 * Note that doing so might move headers in the request, but
2478 * the fields will stay coherent and the URI will not move.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2479 * This should only be performed in the backend.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2480 */
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]2481 if ((t->be->cookie_name || t->be->appsession_name || t->be->capture_name)
2482 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2483 manage_client_side_cookies(t, req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2484
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2485
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2486 /*
Willy Tarreaubb046ac2007-03-03 19:17:03 +0100[diff] [blame]2487 * 9: add X-Forwarded-For if either the frontend or the backend
2488 * asks for it.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2489 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2490 if ((t->fe->options | t->be->options) & PR_O_FWDFOR) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2491 if (t->cli_addr.ss_family == AF_INET) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2492 /* Add an X-Forwarded-For header unless the source IP is
2493 * in the 'except' network range.
2494 */
2495 if ((!t->fe->except_mask.s_addr ||
2496 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->fe->except_mask.s_addr)
2497 != t->fe->except_net.s_addr) &&
2498 (!t->be->except_mask.s_addr ||
2499 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->be->except_mask.s_addr)
2500 != t->be->except_net.s_addr)) {
2501 int len;
2502 unsigned char *pn;
2503 pn = (unsigned char *)&((struct sockaddr_in *)&t->cli_addr)->sin_addr;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2504
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2505 /* Note: we rely on the backend to get the header name to be used for
2506 * x-forwarded-for, because the header is really meant for the backends.
2507 * However, if the backend did not specify any option, we have to rely
2508 * on the frontend's header name.
2509 */
2510 if (t->be->fwdfor_hdr_len) {
2511 len = t->be->fwdfor_hdr_len;
2512 memcpy(trash, t->be->fwdfor_hdr_name, len);
2513 } else {
2514 len = t->fe->fwdfor_hdr_len;
2515 memcpy(trash, t->fe->fwdfor_hdr_name, len);
2516 }
2517 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2518
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2519 if (unlikely(http_header_add_tail2(req, &txn->req,
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2520 &txn->hdr_idx, trash, len)) < 0)
2521 goto return_bad_req;
2522 }
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2523 }
2524 else if (t->cli_addr.ss_family == AF_INET6) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2525 /* FIXME: for the sake of completeness, we should also support
2526 * 'except' here, although it is mostly useless in this case.
2527 */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2528 int len;
2529 char pn[INET6_ADDRSTRLEN];
2530 inet_ntop(AF_INET6,
2531 (const void *)&((struct sockaddr_in6 *)(&t->cli_addr))->sin6_addr,
2532 pn, sizeof(pn));
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2533
2534 /* Note: we rely on the backend to get the header name to be used for
2535 * x-forwarded-for, because the header is really meant for the backends.
2536 * However, if the backend did not specify any option, we have to rely
2537 * on the frontend's header name.
2538 */
2539 if (t->be->fwdfor_hdr_len) {
2540 len = t->be->fwdfor_hdr_len;
2541 memcpy(trash, t->be->fwdfor_hdr_name, len);
2542 } else {
2543 len = t->fe->fwdfor_hdr_len;
2544 memcpy(trash, t->fe->fwdfor_hdr_name, len);
2545 }
2546 len += sprintf(trash + len, ": %s", pn);
2547
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2548 if (unlikely(http_header_add_tail2(req, &txn->req,
2549 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2550 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2551 }
2552 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2553
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2554 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2555 * 10: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2556 * Note that we do not need to add it in case of HTTP/1.0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2557 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2558 if (!(t->flags & SN_CONN_CLOSED) &&
Krzysztof Oledzki336d4752007-12-25 02:40:22 +0100[diff] [blame]2559 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2560 if ((unlikely(msg->sl.rq.v_l != 8) ||
2561 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
2562 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2563 "Connection: close", 17)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2564 goto return_bad_req;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2565 t->flags |= SN_CONN_CLOSED;
Willy Tarreaue15d9132006-12-14 22:26:42 +0100[diff] [blame]2566 }
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2567 /* Before we switch to data, was assignment set in manage_client_side_cookie?
2568 * If not assigned, perhaps we are balancing on url_param, but this is a
2569 * POST; and the parameters are in the body, maybe scan there to find our server.
2570 * (unless headers overflowed the buffer?)
2571 */
2572 if (!(t->flags & (SN_ASSIGNED|SN_DIRECT)) &&
2573 t->txn.meth == HTTP_METH_POST && t->be->url_param_name != NULL &&
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2574 t->be->url_param_post_limit != 0 && !(req->flags & BF_FULL) &&
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2575 memchr(msg->sol + msg->sl.rq.u, '?', msg->sl.rq.u_l) == NULL) {
2576 /* are there enough bytes here? total == l || r || rlim ?
2577 * len is unsigned, but eoh is int,
2578 * how many bytes of body have we received?
2579 * eoh is the first empty line of the header
2580 */
2581 /* already established CRLF or LF at eoh, move to start of message, find message length in buffer */
Willy Tarreaufb0528b2008-08-11 00:21:56 +0200[diff] [blame]2582 unsigned long len = req->l - (msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2583
2584 /* If we have HTTP/1.1 and Expect: 100-continue, then abort.
2585 * We can't assume responsibility for the server's decision,
2586 * on this URI and header set. See rfc2616: 14.20, 8.2.3,
2587 * We also can't change our mind later, about which server to choose, so round robin.
2588 */
2589 if ((likely(msg->sl.rq.v_l == 8) && req->data[msg->som + msg->sl.rq.v + 7] == '1')) {
2590 struct hdr_ctx ctx;
2591 ctx.idx = 0;
2592 /* Expect is allowed in 1.1, look for it */
2593 http_find_header2("Expect", 6, msg->sol, &txn->hdr_idx, &ctx);
2594 if (ctx.idx != 0 &&
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2595 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0))
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2596 /* We can't reliablly stall and wait for data, because of
2597 * .NET clients that don't conform to rfc2616; so, no need for
2598 * the next block to check length expectations.
2599 * We could send 100 status back to the client, but then we need to
2600 * re-write headers, and send the message. And this isn't the right
2601 * place for that action.
2602 * TODO: support Expect elsewhere and delete this block.
2603 */
2604 goto end_check_maybe_wait_for_body;
2605 }
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2606
2607 if (likely(len > t->be->url_param_post_limit)) {
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2608 /* nothing to do, we got enough */
2609 } else {
2610 /* limit implies we are supposed to need this many bytes
2611 * to find the parameter. Let's see how many bytes we can wait for.
2612 */
2613 long long hint = len;
2614 struct hdr_ctx ctx;
2615 ctx.idx = 0;
2616 http_find_header2("Transfer-Encoding", 17, msg->sol, &txn->hdr_idx, &ctx);
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2617 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2618 buffer_write_dis(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2619 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2620 }
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2621 else {
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2622 ctx.idx = 0;
2623 http_find_header2("Content-Length", 14, msg->sol, &txn->hdr_idx, &ctx);
2624 /* now if we have a length, we'll take the hint */
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2625 if (ctx.idx) {
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2626 /* We have Content-Length */
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2627 if (strl2llrc(ctx.line+ctx.val,ctx.vlen, &hint))
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2628 hint = 0; /* parse failure, untrusted client */
2629 else {
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2630 if (hint > 0)
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2631 msg->hdr_content_len = hint;
2632 else
2633 hint = 0; /* bad client, sent negative length */
2634 }
2635 }
2636 /* but limited to what we care about, maybe we don't expect any entity data (hint == 0) */
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2637 if (t->be->url_param_post_limit < hint)
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2638 hint = t->be->url_param_post_limit;
2639 /* now do we really need to buffer more data? */
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2640 if (len < hint) {
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2641 buffer_write_dis(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2642 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2643 }
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2644 /* else... There are no body bytes to wait for */
2645 }
2646 }
2647 }
2648 end_check_maybe_wait_for_body:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2649
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2650 /*************************************************************
2651 * OK, that's finished for the headers. We have done what we *
2652 * could. Let's switch to the DATA state. *
2653 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2654
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2655 buffer_set_rlim(req, BUFSIZE); /* no more rewrite needed */
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]2656 t->logs.tv_request = now;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2657
Willy Tarreau1fa31262007-12-03 00:36:16 +0100[diff] [blame]2658 /* When a connection is tarpitted, we use the tarpit timeout,
2659 * which may be the same as the connect timeout if unspecified.
2660 * If unset, then set it to zero because we really want it to
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2661 * eventually expire. We build the tarpit as an analyser.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2662 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2663 if (txn->flags & TX_CLTARPIT) {
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2664 buffer_flush(t->req);
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2665 /* flush the request so that we can drop the connection early
2666 * if the client closes first.
2667 */
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2668 buffer_write_dis(req);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2669 req->analysers |= AN_REQ_HTTP_TARPIT;
2670 req->analyse_exp = tick_add_ifset(now_ms, t->be->timeout.tarpit);
2671 if (!req->analyse_exp)
2672 req->analyse_exp = now_ms;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2673 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2674
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2675 /* OK let's go on with the BODY now */
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2676 goto end_of_headers;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2677
2678 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2679 txn->req.msg_state = HTTP_MSG_ERROR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2680 txn->status = 400;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2681 req->analysers = 0;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2682 client_retnclose(t, error_message(t, HTTP_ERR_400));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]2683 t->fe->failed_req++;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2684 return_prx_cond:
2685 if (!(t->flags & SN_ERR_MASK))
2686 t->flags |= SN_ERR_PRXCOND;
2687 if (!(t->flags & SN_FINST_MASK))
2688 t->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2689 return 0;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2690 end_of_headers:
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2691 ; // to keep gcc happy
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2692 }
2693
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2694 if (req->analysers & AN_REQ_HTTP_TARPIT) {
2695 struct http_txn *txn = &t->txn;
2696
2697 /* This connection is being tarpitted. The CLIENT side has
2698 * already set the connect expiration date to the right
2699 * timeout. We just have to check that the client is still
2700 * there and that the timeout has not expired.
2701 */
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]2702 if ((req->flags & (BF_SHUTR|BF_READ_ERROR)) == 0 &&
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2703 !tick_is_expired(req->analyse_exp, now_ms))
2704 return 0;
2705
2706 /* We will set the queue timer to the time spent, just for
2707 * logging purposes. We fake a 500 server error, so that the
2708 * attacker will not suspect his connection has been tarpitted.
2709 * It will not cause trouble to the logs because we can exclude
2710 * the tarpitted connections by filtering on the 'PT' status flags.
2711 */
2712 trace_term(t, TT_HTTP_SRV_2);
2713 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
2714
2715 txn->status = 500;
2716 if (req->flags != BF_READ_ERROR)
2717 client_retnclose(t, error_message(t, HTTP_ERR_500));
2718
2719 req->analysers = 0;
2720 req->analyse_exp = TICK_ETERNITY;
2721
2722 t->fe->failed_req++;
2723 if (!(t->flags & SN_ERR_MASK))
2724 t->flags |= SN_ERR_PRXCOND;
2725 if (!(t->flags & SN_FINST_MASK))
2726 t->flags |= SN_FINST_T;
2727 return 0;
2728 }
2729
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2730 if (req->analysers & AN_REQ_HTTP_BODY) {
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2731 /* We have to parse the HTTP request body to find any required data.
2732 * "balance url_param check_post" should have been the only way to get
2733 * into this. We were brought here after HTTP header analysis, so all
2734 * related structures are ready.
2735 */
2736 struct http_msg *msg = &t->txn.req;
2737 unsigned long body = msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1;
2738 long long limit = t->be->url_param_post_limit;
2739 struct hdr_ctx ctx;
2740
2741 ctx.idx = 0;
2742
2743 /* now if we have a length, we'll take the hint */
2744 http_find_header2("Transfer-Encoding", 17, msg->sol, &t->txn.hdr_idx, &ctx);
2745 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
2746 unsigned int chunk = 0;
2747 while (body < req->l && !HTTP_IS_CRLF(msg->sol[body])) {
2748 char c = msg->sol[body];
2749 if (ishex(c)) {
2750 unsigned int hex = toupper(c) - '0';
2751 if (hex > 9)
2752 hex -= 'A' - '9' - 1;
2753 chunk = (chunk << 4) | hex;
2754 } else
2755 break;
2756 body++;
2757 }
2758 if (body + 2 >= req->l) /* we want CRLF too */
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2759 goto http_body_end; /* end of buffer? data missing! */
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2760
2761 if (memcmp(msg->sol+body, "\r\n", 2) != 0)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2762 goto http_body_end; /* chunked encoding len ends with CRLF, and we don't have it yet */
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2763
2764 body += 2; // skip CRLF
2765
2766 /* if we support more then one chunk here, we have to do it again when assigning server
2767 * 1. how much entity data do we have? new var
2768 * 2. should save entity_start, entity_cursor, elen & rlen in req; so we don't repeat scanning here
2769 * 3. test if elen > limit, or set new limit to elen if 0 (end of entity found)
2770 */
2771
2772 if (chunk < limit)
2773 limit = chunk; /* only reading one chunk */
2774 } else {
2775 if (msg->hdr_content_len < limit)
2776 limit = msg->hdr_content_len;
2777 }
2778
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2779 http_body_end:
2780 /* we leave once we know we have nothing left to do. This means that we have
2781 * enough bytes, or that we know we'll not get any more (buffer full, read
2782 * buffer closed).
2783 */
2784 if (req->l - body >= limit || /* enough bytes! */
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]2785 req->flags & (BF_FULL | BF_READ_ERROR | BF_SHUTR | BF_READ_TIMEOUT) ||
Willy Tarreauc52164a2008-08-17 19:17:57 +0200[diff] [blame]2786 tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2787 /* The situation will not evolve, so let's give up on the analysis. */
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2788 t->logs.tv_request = now; /* update the request timer to reflect full request */
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2789 req->analysers &= ~AN_REQ_HTTP_BODY;
Willy Tarreauffab5b42008-08-17 18:03:28 +0200[diff] [blame]2790 req->analyse_exp = TICK_ETERNITY;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2791 }
Willy Tarreauc52164a2008-08-17 19:17:57 +0200[diff] [blame]2792 else {
2793 /* Not enough data. We'll re-use the http-request
2794 * timeout here. Ideally, we should set the timeout
2795 * relative to the accept() date. We just set the
2796 * request timeout once at the beginning of the
2797 * request.
2798 */
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2799 buffer_write_dis(req);
Willy Tarreauc52164a2008-08-17 19:17:57 +0200[diff] [blame]2800 if (!tick_isset(req->analyse_exp))
2801 req->analyse_exp = tick_add_ifset(now_ms, t->fe->timeout.httpreq);
2802 return 0;
2803 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2804 }
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2805
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2806 /* Note: eventhough nobody should set an unknown flag, clearing them right now will
2807 * probably reduce one day's debugging session.
2808 */
2809#ifdef DEBUG_DEV
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2810 if (req->analysers & ~(AN_REQ_INSPECT | AN_REQ_HTTP_HDR | AN_REQ_HTTP_TARPIT | AN_REQ_HTTP_BODY)) {
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2811 fprintf(stderr, "FIXME !!!! unknown analysers flags %s:%d = 0x%08X\n",
2812 __FILE__, __LINE__, req->analysers);
2813 ABORT_NOW();
2814 }
2815#endif
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2816 req->analysers &= AN_REQ_INSPECT | AN_REQ_HTTP_HDR | AN_REQ_HTTP_TARPIT | AN_REQ_HTTP_BODY;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2817 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2818}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2819
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2820/* This function performs all the processing enabled for the current response.
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2821 * It normally returns zero, but may return 1 if it absolutely needs to be
2822 * called again after other functions. It relies on buffers flags, and updates
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2823 * t->rep->analysers. It might make sense to explode it into several other
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2824 * functions. It works like process_request (see indications above).
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2825 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2826int process_response(struct session *t)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2827{
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2828 struct http_txn *txn = &t->txn;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2829 struct buffer *req = t->req;
2830 struct buffer *rep = t->rep;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2831
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2832 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2833 now_ms, __FUNCTION__,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2834 t,
2835 rep,
2836 rep->rex, rep->wex,
2837 rep->flags,
2838 rep->l,
2839 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]2840
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2841 if (rep->analysers & AN_RTR_HTTP_HDR) { /* receiving server headers */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2842 /*
2843 * Now parse the partial (or complete) lines.
2844 * We will check the response syntax, and also join multi-line
2845 * headers. An index of all the lines will be elaborated while
2846 * parsing.
2847 *
2848 * For the parsing, we use a 28 states FSM.
2849 *
2850 * Here is the information we currently have :
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2851 * rep->data + rep->som = beginning of response
2852 * rep->data + rep->eoh = end of processed headers / start of current one
2853 * rep->data + rep->eol = end of current header or line (LF or CRLF)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2854 * rep->lr = first non-visited byte
2855 * rep->r = end of data
2856 */
Willy Tarreau7f875f62008-08-11 17:35:01 +0200[diff] [blame]2857
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2858 int cur_idx;
2859 struct http_msg *msg = &txn->rsp;
2860 struct proxy *cur_proxy;
2861
2862 if (likely(rep->lr < rep->r))
2863 http_msg_analyzer(rep, msg, &txn->hdr_idx);
2864
2865 /* 1: we might have to print this header in debug mode */
2866 if (unlikely((global.mode & MODE_DEBUG) &&
2867 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2868 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2869 char *eol, *sol;
2870
2871 sol = rep->data + msg->som;
2872 eol = sol + msg->sl.rq.l;
2873 debug_hdr("srvrep", t, sol, eol);
2874
2875 sol += hdr_idx_first_pos(&txn->hdr_idx);
2876 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
2877
2878 while (cur_idx) {
2879 eol = sol + txn->hdr_idx.v[cur_idx].len;
2880 debug_hdr("srvhdr", t, sol, eol);
2881 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2882 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2883 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2884 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2885
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2886 /*
2887 * Now we quickly check if we have found a full valid response.
2888 * If not so, we check the FD and buffer states before leaving.
2889 * A full response is indicated by the fact that we have seen
2890 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2891 * responses are checked first.
2892 *
2893 * Depending on whether the client is still there or not, we
2894 * may send an error response back or not. Note that normally
2895 * we should only check for HTTP status there, and check I/O
2896 * errors somewhere else.
2897 */
2898
2899 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2900 /* Invalid response */
2901 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
2902 hdr_response_bad:
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2903 //buffer_shutr(rep);
2904 //buffer_shutw(req);
2905 //fd_delete(req->cons->fd);
2906 //req->cons->state = SI_ST_CLO;
2907 buffer_shutr_now(rep);
2908 buffer_shutw_now(req);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2909 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2910 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2911 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2912 //sess_change_server(t, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2913 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2914 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2915 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2916 txn->status = 502;
2917 client_return(t, error_message(t, HTTP_ERR_502));
2918 if (!(t->flags & SN_ERR_MASK))
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2919 t->flags |= SN_ERR_PRXCOND;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2920 if (!(t->flags & SN_FINST_MASK))
2921 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2922
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2923 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2924 // process_srv_queue(t->srv);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2925
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2926 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2927 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2928 /* too large response does not fit in buffer. */
2929 else if (rep->flags & BF_FULL) {
2930 goto hdr_response_bad;
2931 }
2932 /* read error */
2933 else if (rep->flags & BF_READ_ERROR) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2934 buffer_shutr_now(rep);
2935 buffer_shutw_now(req);
2936 //fd_delete(req->cons->fd);
2937 //req->cons->state = SI_ST_CLO;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2938 //if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2939 //t->srv->cur_sess--;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2940 //t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2941 //sess_change_server(t, NULL);
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2942 //}
2943 //t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2944 rep->analysers = 0;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2945 txn->status = 502;
2946 client_return(t, error_message(t, HTTP_ERR_502));
2947 if (!(t->flags & SN_ERR_MASK))
2948 t->flags |= SN_ERR_SRVCL;
2949 if (!(t->flags & SN_FINST_MASK))
2950 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2951
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2952 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2953 // process_srv_queue(t->srv);
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2954
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2955 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2956 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2957 /* read timeout : return a 504 to the client. */
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2958 else if (rep->flags & BF_READ_TIMEOUT) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2959 buffer_shutr_now(rep);
2960 buffer_shutw_now(req);
2961 //fd_delete(req->cons->fd);
2962 //req->cons->state = SI_ST_CLO;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2963 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2964 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2965 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2966 //sess_change_server(t, NULL);
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2967 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2968 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2969 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2970 txn->status = 504;
2971 client_return(t, error_message(t, HTTP_ERR_504));
2972 if (!(t->flags & SN_ERR_MASK))
2973 t->flags |= SN_ERR_SRVTO;
2974 if (!(t->flags & SN_FINST_MASK))
2975 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2976
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2977 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2978 // process_srv_queue(t->srv);
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2979 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2980 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2981 /* write error to client, or close from server */
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]2982 else if (rep->flags & (BF_WRITE_ERROR|BF_SHUTR)) {
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2983 buffer_shutr_now(rep);
2984 buffer_shutw_now(req);
2985 //fd_delete(req->cons->fd);
2986 //req->cons->state = SI_ST_CLO;
2987 if (t->srv) {
2988 //t->srv->cur_sess--;
2989 t->srv->failed_resp++;
2990 //sess_change_server(t, NULL);
2991 }
2992 t->be->failed_resp++;
2993 rep->analysers = 0;
2994 txn->status = 502;
2995 client_return(t, error_message(t, HTTP_ERR_502));
2996 if (!(t->flags & SN_ERR_MASK))
2997 t->flags |= SN_ERR_SRVCL;
2998 if (!(t->flags & SN_FINST_MASK))
2999 t->flags |= SN_FINST_H;
3000
3001 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
3002 // process_srv_queue(t->srv);
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]3003
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]3004 return 0;
3005 }
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]3006 buffer_write_dis(rep);
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]3007 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3008 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3009
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3010
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3011 /*****************************************************************
3012 * More interesting part now : we know that we have a complete *
3013 * response which at least looks like HTTP. We have an indicator *
3014 * of each header's length, so we can parse them quickly. *
3015 ****************************************************************/
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3016
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]3017 rep->analysers &= ~AN_RTR_HTTP_HDR;
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]3018
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3019 /* ensure we keep this pointer to the beginning of the message */
3020 msg->sol = rep->data + msg->som;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3021
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3022 /*
3023 * 1: get the status code and check for cacheability.
3024 */
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3025
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3026 t->logs.logwait &= ~LW_RESP;
3027 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3028
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3029 switch (txn->status) {
3030 case 200:
3031 case 203:
3032 case 206:
3033 case 300:
3034 case 301:
3035 case 410:
3036 /* RFC2616 @13.4:
3037 * "A response received with a status code of
3038 * 200, 203, 206, 300, 301 or 410 MAY be stored
3039 * by a cache (...) unless a cache-control
3040 * directive prohibits caching."
3041 *
3042 * RFC2616 @9.5: POST method :
3043 * "Responses to this method are not cacheable,
3044 * unless the response includes appropriate
3045 * Cache-Control or Expires header fields."
3046 */
3047 if (likely(txn->meth != HTTP_METH_POST) &&
3048 (t->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
3049 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
3050 break;
3051 default:
3052 break;
3053 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3054
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3055 /*
3056 * 2: we may need to capture headers
3057 */
3058 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
3059 capture_headers(rep->data + msg->som, &txn->hdr_idx,
3060 txn->rsp.cap, t->fe->rsp_cap);
3061
3062 /*
3063 * 3: we will have to evaluate the filters.
3064 * As opposed to version 1.2, now they will be evaluated in the
3065 * filters order and not in the header order. This means that
3066 * each filter has to be validated among all headers.
3067 *
3068 * Filters are tried with ->be first, then with ->fe if it is
3069 * different from ->be.
3070 */
3071
3072 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
3073
3074 cur_proxy = t->be;
3075 while (1) {
3076 struct proxy *rule_set = cur_proxy;
3077
3078 /* try headers filters */
3079 if (rule_set->rsp_exp != NULL) {
3080 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
3081 return_bad_resp:
3082 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3083 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3084 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3085 //sess_change_server(t, NULL);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3086 }
3087 cur_proxy->failed_resp++;
3088 return_srv_prx_502:
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3089 buffer_shutr_now(rep);
3090 buffer_shutw_now(req);
3091 //fd_delete(req->cons->fd);
3092 //req->cons->state = SI_ST_CLO;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]3093 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3094 txn->status = 502;
3095 client_return(t, error_message(t, HTTP_ERR_502));
3096 if (!(t->flags & SN_ERR_MASK))
3097 t->flags |= SN_ERR_PRXCOND;
3098 if (!(t->flags & SN_FINST_MASK))
3099 t->flags |= SN_FINST_H;
3100 /* We used to have a free connection slot. Since we'll never use it,
3101 * we have to inform the server that it may be used by another session.
3102 */
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3103 //if (t->srv && may_dequeue_tasks(t->srv, cur_proxy))
3104 // process_srv_queue(t->srv);
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3105 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3106 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3107 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3108
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3109 /* has the response been denied ? */
3110 if (txn->flags & TX_SVDENY) {
Willy Tarreauf899b942008-03-28 18:09:38 +0100[diff] [blame]3111 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3112 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3113 t->srv->failed_secu++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3114 //sess_change_server(t, NULL);
Willy Tarreauf899b942008-03-28 18:09:38 +0100[diff] [blame]3115 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3116 cur_proxy->denied_resp++;
3117 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]3118 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3119
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3120 /* We might have to check for "Connection:" */
3121 if (((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
3122 !(t->flags & SN_CONN_CLOSED)) {
3123 char *cur_ptr, *cur_end, *cur_next;
3124 int cur_idx, old_idx, delta, val;
3125 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3126
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3127 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3128 old_idx = 0;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]3129
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3130 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
3131 cur_hdr = &txn->hdr_idx.v[cur_idx];
3132 cur_ptr = cur_next;
3133 cur_end = cur_ptr + cur_hdr->len;
3134 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3135
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3136 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
3137 if (val) {
3138 /* 3 possibilities :
3139 * - we have already set Connection: close,
3140 * so we remove this line.
3141 * - we have not yet set Connection: close,
3142 * but this line indicates close. We leave
3143 * it untouched and set the flag.
3144 * - we have not yet set Connection: close,
3145 * and this line indicates non-close. We
3146 * replace it.
3147 */
3148 if (t->flags & SN_CONN_CLOSED) {
3149 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
3150 txn->rsp.eoh += delta;
3151 cur_next += delta;
3152 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3153 txn->hdr_idx.used--;
3154 cur_hdr->len = 0;
3155 } else {
3156 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
3157 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
3158 "close", 5);
3159 cur_next += delta;
3160 cur_hdr->len += delta;
3161 txn->rsp.eoh += delta;
3162 }
3163 t->flags |= SN_CONN_CLOSED;
3164 }
3165 }
3166 old_idx = cur_idx;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]3167 }
3168 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3169
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3170 /* add response headers from the rule sets in the same order */
3171 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
3172 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
3173 rule_set->rsp_add[cur_idx])) < 0)
3174 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]3175 }
3176
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3177 /* check whether we're already working on the frontend */
3178 if (cur_proxy == t->fe)
3179 break;
3180 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3181 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3182
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3183 /*
3184 * 4: check for server cookie.
3185 */
3186 if (t->be->cookie_name || t->be->appsession_name || t->be->capture_name
3187 || (t->be->options & PR_O_CHK_CACHE))
3188 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3189
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3190
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3191 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3192 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3193 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3194 if ((t->be->options & (PR_O_COOK_NOC | PR_O_CHK_CACHE)) != 0)
3195 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3196
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3197 /*
3198 * 6: add server cookie in the response if needed
3199 */
3200 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
3201 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
3202 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3203
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3204 /* the server is known, it's not the one the client requested, we have to
3205 * insert a set-cookie here, except if we want to insert only on POST
3206 * requests and this one isn't. Note that servers which don't have cookies
3207 * (eg: some backup servers) will return a full cookie removal request.
3208 */
3209 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
3210 t->be->cookie_name,
3211 t->srv->cookie ? t->srv->cookie : "; Expires=Thu, 01-Jan-1970 00:00:01 GMT");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3212
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3213 if (t->be->cookie_domain)
3214 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3215
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3216 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3217 trash, len)) < 0)
3218 goto return_bad_resp;
3219 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3220
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3221 /* Here, we will tell an eventual cache on the client side that we don't
3222 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
3223 * Some caches understand the correct form: 'no-cache="set-cookie"', but
3224 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
3225 */
3226 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3227
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3228 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
3229
3230 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3231 "Cache-control: private", 22)) < 0)
3232 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3233 }
3234 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3235
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3236
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3237 /*
3238 * 7: check if result will be cacheable with a cookie.
3239 * We'll block the response if security checks have caught
3240 * nasty things such as a cacheable cookie.
3241 */
3242 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
3243 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
3244 (t->be->options & PR_O_CHK_CACHE)) {
3245
3246 /* we're in presence of a cacheable response containing
3247 * a set-cookie header. We'll block it as requested by
3248 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3249 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3250 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3251 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3252 t->srv->failed_secu++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3253 //sess_change_server(t, NULL);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3254 }
3255 t->be->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3256
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3257 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
3258 t->be->id, t->srv?t->srv->id:"<dispatch>");
3259 send_log(t->be, LOG_ALERT,
3260 "Blocking cacheable cookie in response from instance %s, server %s.\n",
3261 t->be->id, t->srv?t->srv->id:"<dispatch>");
3262 goto return_srv_prx_502;
3263 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3264
3265 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3266 * 8: add "Connection: close" if needed and not yet set.
3267 * Note that we do not need to add it in case of HTTP/1.0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3268 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3269 if (!(t->flags & SN_CONN_CLOSED) &&
3270 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
3271 if ((unlikely(msg->sl.st.v_l != 8) ||
3272 unlikely(req->data[msg->som + 7] != '0')) &&
3273 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3274 "Connection: close", 17)) < 0)
3275 goto return_bad_resp;
3276 t->flags |= SN_CONN_CLOSED;
3277 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3278
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3279 /*************************************************************
3280 * OK, that's finished for the headers. We have done what we *
3281 * could. Let's switch to the DATA state. *
3282 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3283
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]3284 buffer_set_rlim(rep, BUFSIZE); /* no more rewrite needed */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3285 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3286
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3287#ifdef CONFIG_HAP_TCPSPLICE
3288 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
3289 /* TCP splicing supported by both FE and BE */
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]3290 tcp_splice_splicefd(rep->cons->fd, rep->prod->fd, 0);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3291 }
3292#endif
3293 /* if the user wants to log as soon as possible, without counting
3294 * bytes from the server, then this is the right moment. We have
3295 * to temporarily assign bytes_out to log what we currently have.
3296 */
3297 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
3298 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
3299 t->logs.bytes_out = txn->rsp.eoh;
3300 if (t->fe->to_log & LW_REQ)
3301 http_sess_log(t);
3302 else
3303 tcp_sess_log(t);
3304 t->logs.bytes_out = 0;
3305 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3306
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3307 /* Note: we must not try to cheat by jumping directly to DATA,
3308 * otherwise we would not let the client side wake up.
3309 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3310
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3311 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3312 }
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3313
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]3314 /* Note: eventhough nobody should set an unknown flag, clearing them right now will
3315 * probably reduce one day's debugging session.
3316 */
3317#ifdef DEBUG_DEV
3318 if (rep->analysers & ~(AN_RTR_HTTP_HDR)) {
3319 fprintf(stderr, "FIXME !!!! unknown analysers flags %s:%d = 0x%08X\n",
3320 __FILE__, __LINE__, rep->analysers);
3321 ABORT_NOW();
3322 }
3323#endif
3324 rep->analysers &= AN_RTR_HTTP_HDR;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3325 return 0;
3326}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3327
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]3328///*
3329// * Manages the client FSM and its socket. It normally returns zero, but may
3330// * return 1 if it absolutely wants to be called again.
3331// *
3332// * Note: process_cli is the ONLY function allowed to set cli_state to anything
3333// * but CL_STCLOSE.
3334// */
3335//int process_cli(struct session *t)
3336//{
3337// struct buffer *req = t->req;
3338// struct buffer *rep = t->rep;
3339//
3340// DPRINTF(stderr,"[%u] %s: fd=%d[%d] c=%s set(r,w)=%d,%d exp(r,w)=%u,%u req=%08x rep=%08x rql=%d rpl=%d\n",
3341// now_ms, __FUNCTION__,
3342// t->cli_fd, t->cli_fd >= 0 ? fdtab[t->cli_fd].state : 0, /* fd,state*/
3343// cli_stnames[t->cli_state],
3344// t->cli_fd >= 0 && fdtab[t->cli_fd].state != FD_STCLOSE ? EV_FD_ISSET(t->cli_fd, DIR_RD) : 0,
3345// t->cli_fd >= 0 && fdtab[t->cli_fd].state != FD_STCLOSE ? EV_FD_ISSET(t->cli_fd, DIR_WR) : 0,
3346// req->rex, rep->wex,
3347// req->flags, rep->flags,
3348// req->l, rep->l);
3349//
3350// update_state:
3351// /* FIXME: we still have to check for CL_STSHUTR because client_retnclose
3352// * still set this state (and will do until unix sockets are converted).
3353// */
3354// if (t->cli_state == CL_STDATA || t->cli_state == CL_STSHUTR) {
3355// /* we can skip most of the tests at once if some conditions are not met */
3356// if (!((fdtab[t->cli_fd].state == FD_STERROR) ||
3357// (req->flags & (BF_READ_TIMEOUT|BF_READ_ERROR|BF_SHUTR_NOW)) ||
3358// (rep->flags & (BF_WRITE_TIMEOUT|BF_WRITE_ERROR|BF_SHUTW_NOW)) ||
3359// (!(req->flags & BF_SHUTR) && req->flags & (BF_READ_NULL|BF_SHUTW)) ||
3360// (!(rep->flags & BF_SHUTW) &&
3361// (rep->flags & (BF_EMPTY|BF_MAY_FORWARD|BF_SHUTR)) == (BF_EMPTY|BF_MAY_FORWARD|BF_SHUTR))))
3362// goto update_timeouts;
3363//
3364// /* read or write error */
3365// if (fdtab[t->cli_fd].state == FD_STERROR) {
3366// buffer_shutr(req);
3367// req->flags |= BF_READ_ERROR;
3368// buffer_shutw(rep);
3369// rep->flags |= BF_WRITE_ERROR;
3370// fd_delete(t->cli_fd);
3371// t->cli_state = CL_STCLOSE;
3372// trace_term(t, TT_HTTP_CLI_1);
3373// if (!req->analysers) {
3374// if (!(t->flags & SN_ERR_MASK))
3375// t->flags |= SN_ERR_CLICL;
3376// if (!(t->flags & SN_FINST_MASK)) {
3377// if (req->cons->err_type <= SI_ET_QUEUE_ABRT)
3378// t->flags |= SN_FINST_Q;
3379// else if (req->cons->err_type <= SI_ET_CONN_OTHER)
3380// t->flags |= SN_FINST_C;
3381// else
3382// t->flags |= SN_FINST_D;
3383// }
3384// }
3385// goto update_state;
3386// }
3387// /* last read, or end of server write */
3388// else if (!(req->flags & BF_SHUTR) && /* not already done */
3389// req->flags & (BF_READ_NULL|BF_SHUTR_NOW|BF_SHUTW)) {
3390// buffer_shutr(req);
3391// if (!(rep->flags & BF_SHUTW)) {
3392// EV_FD_CLR(t->cli_fd, DIR_RD);
3393// trace_term(t, TT_HTTP_CLI_2);
3394// } else {
3395// /* output was already closed */
3396// fd_delete(t->cli_fd);
3397// t->cli_state = CL_STCLOSE;
3398// trace_term(t, TT_HTTP_CLI_3);
3399// }
3400// goto update_state;
3401// }
3402// /* last server read and buffer empty : we only check them when we're
3403// * allowed to forward the data.
3404// */
3405// else if (!(rep->flags & BF_SHUTW) && /* not already done */
3406// ((rep->flags & BF_SHUTW_NOW) ||
3407// (rep->flags & BF_EMPTY && rep->flags & BF_MAY_FORWARD &&
3408// rep->flags & BF_SHUTR && !(t->flags & SN_SELF_GEN)))) {
3409// buffer_shutw(rep);
3410// if (!(req->flags & BF_SHUTR)) {
3411// EV_FD_CLR(t->cli_fd, DIR_WR);
3412// shutdown(t->cli_fd, SHUT_WR);
3413// trace_term(t, TT_HTTP_CLI_4);
3414// } else {
3415// fd_delete(t->cli_fd);
3416// t->cli_state = CL_STCLOSE;
3417// trace_term(t, TT_HTTP_CLI_5);
3418// }
3419// goto update_state;
3420// }
3421// /* read timeout */
3422// else if ((req->flags & (BF_SHUTR|BF_READ_TIMEOUT)) == BF_READ_TIMEOUT) {
3423// buffer_shutr(req);
3424// if (!(rep->flags & BF_SHUTW)) {
3425// EV_FD_CLR(t->cli_fd, DIR_RD);
3426// trace_term(t, TT_HTTP_CLI_6);
3427// } else {
3428// /* output was already closed */
3429// fd_delete(t->cli_fd);
3430// t->cli_state = CL_STCLOSE;
3431// trace_term(t, TT_HTTP_CLI_7);
3432// }
3433// if (!req->analysers) {
3434// if (!(t->flags & SN_ERR_MASK))
3435// t->flags |= SN_ERR_CLITO;
3436// if (!(t->flags & SN_FINST_MASK)) {
3437// if (req->cons->err_type <= SI_ET_QUEUE_ABRT)
3438// t->flags |= SN_FINST_Q;
3439// else if (req->cons->err_type <= SI_ET_CONN_OTHER)
3440// t->flags |= SN_FINST_C;
3441// else
3442// t->flags |= SN_FINST_D;
3443// }
3444// }
3445// goto update_state;
3446// }
3447// /* write timeout */
3448// else if ((rep->flags & (BF_SHUTW|BF_WRITE_TIMEOUT)) == BF_WRITE_TIMEOUT) {
3449// buffer_shutw(rep);
3450// if (!(req->flags & BF_SHUTR)) {
3451// EV_FD_CLR(t->cli_fd, DIR_WR);
3452// shutdown(t->cli_fd, SHUT_WR);
3453// trace_term(t, TT_HTTP_CLI_8);
3454// } else {
3455// fd_delete(t->cli_fd);
3456// t->cli_state = CL_STCLOSE;
3457// trace_term(t, TT_HTTP_CLI_9);
3458// }
3459// if (!req->analysers) {
3460// if (!(t->flags & SN_ERR_MASK))
3461// t->flags |= SN_ERR_CLITO;
3462// if (!(t->flags & SN_FINST_MASK)) {
3463// if (req->cons->err_type <= SI_ET_QUEUE_ABRT)
3464// t->flags |= SN_FINST_Q;
3465// else if (req->cons->err_type <= SI_ET_CONN_OTHER)
3466// t->flags |= SN_FINST_C;
3467// else
3468// t->flags |= SN_FINST_D;
3469// }
3470// }
3471// goto update_state;
3472// }
3473//
3474// update_timeouts:
3475// /* manage read timeout */
3476// if (!(req->flags & BF_SHUTR)) {
3477// if (req->flags & BF_FULL) {
3478// /* no room to read more data */
3479// if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
3480// /* stop reading until we get some space */
3481// req->rex = TICK_ETERNITY;
3482// }
3483// } else {
3484// EV_FD_COND_S(t->cli_fd, DIR_RD);
3485// req->rex = tick_add_ifset(now_ms, t->fe->timeout.client);
3486// }
3487// }
3488//
3489// /* manage write timeout */
3490// if (!(rep->flags & BF_SHUTW)) {
3491// /* first, we may have to produce data (eg: stats).
3492// * right now, this is limited to the SHUTR state.
3493// */
3494// if (req->flags & BF_SHUTR && t->flags & SN_SELF_GEN) {
3495// produce_content(t);
3496// if (rep->flags & BF_EMPTY) {
3497// buffer_shutw(rep);
3498// fd_delete(t->cli_fd);
3499// t->cli_state = CL_STCLOSE;
3500// trace_term(t, TT_HTTP_CLI_10);
3501// goto update_state;
3502// }
3503// }
3504//
3505// /* we don't enable client write if the buffer is empty, nor if the server has to analyze it */
3506// if ((rep->flags & (BF_EMPTY|BF_MAY_FORWARD)) != BF_MAY_FORWARD) {
3507// if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
3508// /* stop writing */
3509// rep->wex = TICK_ETERNITY;
3510// }
3511// } else {
3512// /* buffer not empty */
3513// EV_FD_COND_S(t->cli_fd, DIR_WR);
3514// if (!tick_isset(rep->wex)) {
3515// /* restart writing */
3516// rep->wex = tick_add_ifset(now_ms, t->fe->timeout.client);
3517// if (!(req->flags & BF_SHUTR) && tick_isset(rep->wex) && tick_isset(req->rex)) {
3518// /* FIXME: to prevent the client from expiring read timeouts during writes,
3519// * we refresh it, except if it was already infinite. */
3520// req->rex = rep->wex;
3521// }
3522// }
3523// }
3524// }
3525// return 0; /* other cases change nothing */
3526// }
3527// else if (t->cli_state == CL_STCLOSE) { /* CL_STCLOSE: nothing to do */
3528// if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
3529// int len;
3530// len = sprintf(trash, "%08x:%s.clicls[%04x:%04x]\n", t->uniq_id, t->be->id, (unsigned short)t->cli_fd, (unsigned short)req->cons->fd);
3531// write(1, trash, len);
3532// }
3533// return 0;
3534// }
3535//#ifdef DEBUG_DEV
3536// fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, t->cli_state);
3537// ABORT_NOW();
3538//#endif
3539// return 0;
3540//}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3541
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3542
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3543/* Return 1 if the pending connection has failed and should be retried,
3544 * otherwise zero. We may only come here in SI_ST_CON state, which means that
3545 * the socket's file descriptor is known.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3546 */
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3547int tcp_connection_status(struct session *t)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3548{
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3549 struct buffer *req = t->req;
3550 struct buffer *rep = t->rep;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3551 int conn_err = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3552
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3553 DPRINTF(stderr,"[%u] %s: c=%s exp(r,w)=%u,%u req=%08x rep=%08x rql=%d rpl=%d\n",
3554 now_ms, __FUNCTION__,
3555 cli_stnames[t->cli_state],
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3556 rep->rex, req->wex,
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]3557 req->flags, rep->flags,
3558 req->l, rep->l);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3559
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3560 if ((req->flags & BF_SHUTW_NOW) ||
3561 (rep->flags & BF_SHUTW) ||
3562 ((req->flags & BF_SHUTR) && /* FIXME: this should not prevent a connection from establishing */
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]3563 ((req->flags & BF_EMPTY && !(req->flags & BF_WRITE_ACTIVITY)) ||
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3564 t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
3565
3566 trace_term(t, TT_HTTP_SRV_5);
3567 req->wex = TICK_ETERNITY;
3568 fd_delete(req->cons->fd);
3569 if (t->srv) {
3570 t->srv->cur_sess--;
3571 sess_change_server(t, NULL);
3572 }
3573 /* note that this must not return any error because it would be able to
3574 * overwrite the client_retnclose() output.
3575 */
3576 //srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_C, 0, NULL);
3577
3578 // FIXME: should we set rep->MAY_FORWARD ?
3579 buffer_shutw(req);
3580 buffer_shutr(rep);
3581 req->cons->state = SI_ST_CLO;
3582 if (!req->cons->err_type)
3583 req->cons->err_type = SI_ET_CONN_ABRT;
3584 req->cons->err_loc = t->srv;
3585 return 0;
3586 }
3587
3588 /* check for timeouts and asynchronous connect errors */
3589 if (fdtab[req->cons->fd].state == FD_STERROR) {
3590 conn_err = SI_ET_CONN_ERR;
3591 if (!req->cons->err_type)
3592 req->cons->err_type = SI_ET_CONN_ERR;
3593 }
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]3594 else if (!(req->flags & BF_WRITE_ACTIVITY)) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3595 /* nothing happened, maybe we timed out */
3596 if (tick_is_expired(req->wex, now_ms)) {
3597 conn_err = SI_ET_CONN_TO;
3598 if (!req->cons->err_type)
3599 req->cons->err_type = SI_ET_CONN_TO;
3600 }
3601 else
3602 return 0; /* let's wait a bit more */
3603 }
3604
3605 if (conn_err) {
3606 fd_delete(req->cons->fd);
3607 req->cons->state = SI_ST_CLO;
3608
3609 if (t->srv) {
3610 t->srv->cur_sess--;
3611 sess_change_server(t, NULL);
3612 req->cons->err_loc = t->srv;
3613 }
3614
3615 /* ensure that we have enough retries left */
3616 if (srv_count_retry_down(t, conn_err))
3617 return 0;
3618
3619 if (conn_err == SI_ET_CONN_ERR) {
3620 /* we encountered an immediate connection error, and we
3621 * will have to retry connecting to the same server, most
3622 * likely leading to the same result. To avoid this, we
3623 * fake a connection timeout to retry after a turn-around
3624 * time of 1 second. We will wait in the previous if block.
3625 */
3626 req->cons->state = SI_ST_TAR;
3627 req->wex = tick_add(now_ms, MS_TO_TICKS(1000));
3628 return 0;
3629 }
3630
3631 if (t->srv && t->conn_retries == 0 && t->be->options & PR_O_REDISP) {
3632 /* We're on our last chance, and the REDISP option was specified.
3633 * We will ignore cookie and force to balance or use the dispatcher.
3634 */
3635 /* let's try to offer this slot to anybody */
3636 if (may_dequeue_tasks(t->srv, t->be))
3637 process_srv_queue(t->srv);
3638
3639 /* it's left to the dispatcher to choose a server */
3640 t->flags &= ~(SN_DIRECT | SN_ASSIGNED | SN_ADDR_SET);
3641 t->prev_srv = t->srv;
3642 } else {
3643 /* we just want to retry */
3644 if (t->srv)
3645 t->srv->retries++;
3646 t->be->retries++;
3647
3648 /* Now we will try to either reconnect to the same server or
3649 * connect to another server. If the connection gets queued
3650 * because all servers are saturated, then we will go back to
3651 * the idle state where the buffer's consumer is marked as
3652 * unknown.
3653 */
3654 if (srv_retryable_connect(t)) {
3655 /* success or unrecoverable error */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3656 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3657 return 0;
3658 }
3659 }
3660
3661 /* We'll rely on the caller to try to get a connection again */
3662 return 1;
3663 }
3664 else {
3665 /* no error and write OK : connection succeeded */
3666 t->logs.t_connect = tv_ms_elapsed(&t->logs.tv_accept, &now);
3667 req->cons->state = SI_ST_EST;
3668 req->cons->err_type = SI_ET_NONE;
3669 req->cons->err_loc = NULL;
3670
3671 if (req->flags & BF_EMPTY) {
3672 EV_FD_CLR(req->cons->fd, DIR_WR);
3673 req->wex = TICK_ETERNITY;
3674 } else {
3675 EV_FD_SET(req->cons->fd, DIR_WR);
3676 req->wex = tick_add_ifset(now_ms, t->be->timeout.server);
3677 if (tick_isset(req->wex)) {
3678 /* FIXME: to prevent the server from expiring read timeouts during writes,
3679 * we refresh it. */
3680 rep->rex = req->wex;
3681 }
3682 }
3683
3684 if (t->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
3685 if (!(rep->flags & BF_HIJACK)) {
3686 EV_FD_SET(req->cons->fd, DIR_RD);
3687 rep->rex = tick_add_ifset(now_ms, t->be->timeout.server);
3688 }
3689 buffer_set_rlim(rep, BUFSIZE); /* no rewrite needed */
3690
3691 /* if the user wants to log as soon as possible, without counting
3692 bytes from the server, then this is the right moment. */
3693 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
3694 t->logs.t_close = t->logs.t_connect; /* to get a valid end date */
3695 tcp_sess_log(t);
3696 }
3697#ifdef CONFIG_HAP_TCPSPLICE
3698 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
3699 /* TCP splicing supported by both FE and BE */
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]3700 tcp_splice_splicefd(req->prod->fd, req->cons->fd, 0);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3701 }
3702#endif
3703 }
3704 else {
3705 rep->analysers |= AN_RTR_HTTP_HDR;
3706 buffer_set_rlim(rep, BUFSIZE - MAXREWRITE); /* rewrite needed */
3707 t->txn.rsp.msg_state = HTTP_MSG_RPBEFORE;
3708 /* reset hdr_idx which was already initialized by the request.
3709 * right now, the http parser does it.
3710 * hdr_idx_init(&t->txn.hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3711 */
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3712 }
3713
Willy Tarreau9a2d1542008-08-30 12:31:07 +0200[diff] [blame]3714 rep->flags |= BF_READ_ATTACHED; /* producer is now attached */
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3715 req->wex = TICK_ETERNITY;
3716 return 0;
3717 }
3718}
3719
3720
3721/*
3722 * This function tries to assign a server to a stream_sock interface.
3723 * It may be called only for t->req->cons->state = one of { SI_ST_INI,
3724 * SI_ST_TAR, SI_ST_QUE }. It returns one of those states, SI_ST_ASS
3725 * in case of success, or SI_ST_CLO in case of failure. It returns 1 if
3726 * it returns SI_ST_ASS, otherwise zero.
3727 */
3728int stream_sock_assign_server(struct session *t)
3729{
3730 DPRINTF(stderr,"[%u] %s: c=%s exp(r,w)=%u,%u req=%08x rep=%08x rql=%d rpl=%d\n",
3731 now_ms, __FUNCTION__,
3732 cli_stnames[t->cli_state],
3733 t->rep->rex, t->req->wex,
3734 t->req->flags, t->rep->flags,
3735 t->req->l, t->rep->l);
3736
3737 if (t->req->cons->state == SI_ST_TAR) {
3738 /* connection might be aborted */
3739 if ((t->req->flags & BF_SHUTW_NOW) ||
3740 (t->rep->flags & BF_SHUTW) ||
3741 ((t->req->flags & BF_SHUTR) && /* FIXME: this should not prevent a connection from establishing */
3742 (t->req->flags & BF_EMPTY || t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3743
Willy Tarreauf8533202008-08-16 14:55:08 +0200[diff] [blame]3744 trace_term(t, TT_HTTP_SRV_1);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3745 t->req->wex = TICK_ETERNITY;
3746
3747 // FIXME: should we set rep->MAY_FORWARD ?
3748 buffer_shutr(t->rep);
3749 buffer_shutw(t->req);
3750 if (!t->req->cons->err_type)
3751 t->req->cons->err_type = SI_ET_CONN_ABRT;
3752 t->req->cons->state = SI_ST_CLO;
3753 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3754 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3755
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3756 if (!tick_is_expired(t->req->wex, now_ms))
3757 return 0; /* still in turn-around */
3758
3759 t->req->cons->state = SI_ST_INI;
3760 }
3761 else if (t->req->cons->state == SI_ST_QUE) {
3762 if (t->pend_pos) {
3763 /* request still in queue... */
3764 if (tick_is_expired(t->req->wex, now_ms)) {
3765 /* ... and timeout expired */
3766 trace_term(t, TT_HTTP_SRV_3);
3767 t->req->wex = TICK_ETERNITY;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3768 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3769 if (t->srv)
3770 t->srv->failed_conns++;
3771 t->be->failed_conns++;
3772
3773 // FIXME: should we set rep->MAY_FORWARD ?
3774 buffer_shutr(t->rep);
3775 buffer_shutw(t->req);
3776 t->req->flags |= BF_WRITE_TIMEOUT;
3777 if (!t->req->cons->err_type)
3778 t->req->cons->err_type = SI_ET_QUEUE_TO;
3779 t->req->cons->state = SI_ST_CLO;
3780 return 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3781 }
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3782 /* connection remains in queue, check if we have to abort it */
3783 if ((t->req->flags & BF_SHUTW_NOW) ||
3784 (t->rep->flags & BF_SHUTW) ||
3785 ((t->req->flags & BF_SHUTR) && /* FIXME: this should not prevent a connection from establishing */
3786 (t->req->flags & BF_EMPTY || t->be->options & PR_O_ABRT_CLOSE))) {
3787 /* give up */
3788 trace_term(t, TT_HTTP_SRV_1);
3789 t->req->wex = TICK_ETERNITY;
3790 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3791
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3792 // FIXME: should we set rep->MAY_FORWARD ?
3793 buffer_shutr(t->rep);
3794 buffer_shutw(t->req);
3795 if (!t->req->cons->err_type)
3796 t->req->cons->err_type = SI_ET_QUEUE_ABRT;
3797 t->req->cons->state = SI_ST_CLO;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3798 }
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3799 return 0;
3800 }
3801 /* The connection is not in the queue anymore */
3802 t->req->cons->state = SI_ST_INI;
3803 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3804
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3805 /* we may get here from above */
3806 if (t->req->cons->state == SI_ST_INI) {
3807 /* no connection in progress, we have to get a new one */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3808
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3809 /* first, check if the connection has been aborted */
3810 if ((t->req->flags & BF_SHUTW_NOW) ||
3811 (t->rep->flags & BF_SHUTW) ||
3812 ((t->req->flags & BF_SHUTR) &&
3813 (t->req->flags & BF_EMPTY || t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3814
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3815 trace_term(t, TT_HTTP_SRV_1);
3816 t->req->wex = TICK_ETERNITY;
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]3817
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3818 // FIXME: should we set rep->MAY_FORWARD ?
3819 buffer_shutr(t->rep);
3820 buffer_shutw(t->req);
3821 if (!t->req->cons->err_type)
3822 t->req->cons->err_type = SI_ET_CONN_ABRT;
3823 t->req->cons->state = SI_ST_CLO;
3824 return 0;
3825 }
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]3826
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3827 /* try to get a server assigned */
3828 if (srv_redispatch_connect(t) != 0) {
3829 /* we did not get any server, let's check the cause */
3830 if (t->req->cons->state == SI_ST_QUE) {
3831 /* the connection was queued, that's OK */
3832 return 0;
3833 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3834
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3835 trace_term(t, TT_HTTP_SRV_2);
3836 t->req->wex = TICK_ETERNITY;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3837
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3838 // FIXME: should we set rep->MAY_FORWARD ?
3839 buffer_shutr(t->rep);
3840 buffer_shutw(t->req);
3841 t->req->flags |= BF_WRITE_ERROR;
3842 if (!t->req->cons->err_type)
3843 t->req->cons->err_type = SI_ET_CONN_OTHER;
3844 t->req->cons->state = SI_ST_CLO;
3845 return 0;
3846 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3847
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3848 t->req->cons->state = SI_ST_ASS;
3849 /* Once the server is assigned, we have to return because
3850 * the caller might be interested in checking several
3851 * things before connecting.
3852 */
3853 return 1;
3854 }
3855 return 0;
3856}
Krzysztof Piotr Oledzkiefe3b6f2008-05-23 23:49:32 +0200[diff] [blame]3857
Willy Tarreauf8533202008-08-16 14:55:08 +0200[diff] [blame]3858
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3859/*
3860 * This function tries to establish a connection to an assigned server. It also
3861 * performs connection retries. It may only be called with t->req->cons->state
3862 * in { SI_ST_ASS, SI_ST_CON }. It may also set the state to SI_ST_INI,
3863 * SI_ST_EST, or SI_ST_CLO.
3864 */
3865int stream_sock_connect_server(struct session *t)
3866{
3867 if (t->req->cons->state == SI_ST_ASS) {
3868 /* server assigned to request, we have to try to connect now */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3869
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3870 if (!srv_retryable_connect(t)) {
3871 /* we need to redispatch */
3872 t->req->cons->state = SI_ST_INI;
3873 return 0;
3874 }
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]3875
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3876 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
3877 if (t->req->cons->state != SI_ST_CON) {
3878 /* it was an error */
3879 trace_term(t, TT_HTTP_SRV_4);
3880 t->req->wex = TICK_ETERNITY;
3881
3882 // FIXME: should we set rep->MAY_FORWARD ?
3883 buffer_shutr(t->rep);
3884 buffer_shutw(t->req);
3885 t->req->flags |= BF_WRITE_ERROR;
3886 if (!t->req->cons->err_type)
3887 t->req->cons->err_type = SI_ET_CONN_OTHER;
3888 t->req->cons->state = SI_ST_CLO;
3889 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3890 }
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3891 /* We have a socket and switched to SI_ST_CON */
3892 }
3893
3894 /* we may also get here from above */
3895 if (t->req->cons->state == SI_ST_CON) {
3896 /* connection in progress or just completed */
3897 if (!tcp_connection_status(t))
3898 return 0;
3899 }
3900 return 0;
3901}
3902
3903
3904/*
3905 * Tries to establish a connection to the server and associate it to the
3906 * request buffer's consumer side. It is assumed that this function will not be
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]3907 * be called with SI_ST_EST nor with BF_WRITE_ENA cleared. It normally
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3908 * returns zero, but may return 1 if it absolutely wants to be called again.
3909 */
3910int process_srv_conn(struct session *t)
3911{
3912 DPRINTF(stderr,"[%u] %s: c=%s exp(r,w)=%u,%u req=%08x rep=%08x rql=%d rpl=%d\n",
3913 now_ms, __FUNCTION__,
3914 cli_stnames[t->cli_state],
3915 t->rep->rex, t->req->wex,
3916 t->req->flags, t->rep->flags,
3917 t->req->l, t->rep->l);
3918
3919 do {
3920 if (t->req->cons->state == SI_ST_INI ||
3921 t->req->cons->state == SI_ST_TAR ||
3922 t->req->cons->state == SI_ST_QUE) {
3923 /* try to assign a server */
3924 if (!stream_sock_assign_server(t))
3925 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3926 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3927
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3928 if (t->req->cons->state == SI_ST_ASS &&
3929 t->srv && t->srv->rdr_len && t->flags & SN_REDIRECTABLE) {
3930 /* Server supporting redirection and it is possible.
3931 * Invalid requests are reported as such. It concerns all
3932 * the largest ones.
3933 */
3934 struct http_txn *txn = &t->txn;
3935 struct chunk rdr;
3936 char *path;
3937 int len;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3938
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3939 /* 1: create the response header */
3940 rdr.len = strlen(HTTP_302);
3941 rdr.str = trash;
3942 memcpy(rdr.str, HTTP_302, rdr.len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3943
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3944 /* 2: add the server's prefix */
3945 if (rdr.len + t->srv->rdr_len > sizeof(trash))
3946 goto cancel_redir;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3947
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3948 memcpy(rdr.str + rdr.len, t->srv->rdr_pfx, t->srv->rdr_len);
3949 rdr.len += t->srv->rdr_len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3950
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3951 /* 3: add the request URI */
3952 path = http_get_path(txn);
3953 if (!path)
3954 goto cancel_redir;
3955 len = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
3956 if (rdr.len + len > sizeof(trash) - 4) /* 4 for CRLF-CRLF */
3957 goto cancel_redir;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3958
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3959 memcpy(rdr.str + rdr.len, path, len);
3960 rdr.len += len;
3961 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
3962 rdr.len += 4;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3963
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3964 srv_close_with_err(t, SN_ERR_PRXCOND, SN_FINST_C, 302, &rdr);
3965 trace_term(t, TT_HTTP_SRV_3);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3966
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3967 /* FIXME: we should increase a counter of redirects per server and per backend. */
3968 if (t->srv)
3969 t->srv->cum_sess++;
3970
3971 t->req->cons->state = SI_ST_CLO;
3972 return 0;
3973 cancel_redir:
3974 //txn->status = 400;
3975 //t->fe->failed_req++;
3976 //srv_close_with_err(t, SN_ERR_PRXCOND, SN_FINST_C,
3977 // 400, error_message(t, HTTP_ERR_400));
3978 trace_term(t, TT_HTTP_SRV_4);
3979
3980 // FIXME: should we set rep->MAY_FORWARD ?
3981 buffer_shutw(t->req);
3982 buffer_shutr(t->rep);
3983 if (!t->req->cons->err_type)
3984 t->req->cons->err_type = SI_ET_CONN_OTHER;
3985 t->req->cons->state = SI_ST_CLO;
3986 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3987 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3988
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3989 if (t->req->cons->state == SI_ST_CON ||
3990 t->req->cons->state == SI_ST_ASS) {
3991 stream_sock_connect_server(t);
3992 }
3993 } while (t->req->cons->state != SI_ST_CLO &&
3994 t->req->cons->state != SI_ST_CON &&
3995 t->req->cons->state != SI_ST_EST);
3996 return 0;
3997}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3998
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3999
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4000/*
4001 * Produces data for the session <s> depending on its source. Expects to be
Willy Tarreau1ae3a052008-08-16 10:56:30 +0200[diff] [blame]4002 * called with client socket shut down on input. Right now, only statistics can
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]4003 * be produced. It stops by itself by unsetting the BF_HIJACK flag from the
4004 * buffer, which it uses to keep on being called when there is free space in
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4005 * the buffer, or simply by letting an empty buffer upon return. It returns 1
Willy Tarreau1ae3a052008-08-16 10:56:30 +0200[diff] [blame]4006 * when it wants to stop sending data, otherwise 0.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4007 */
4008int produce_content(struct session *s)
4009{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4010 if (s->data_source == DATA_SRC_NONE) {
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]4011 buffer_stop_hijack(s->rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4012 return 1;
4013 }
4014 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]4015 /* dump server statistics */
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4016 int ret = stats_dump_http(s, s->be->uri_auth);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]4017 if (ret >= 0)
4018 return ret;
4019 /* -1 indicates an error */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]4020 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4021
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]4022 /* unknown data source or internal error */
4023 s->txn.status = 500;
4024 client_retnclose(s, error_message(s, HTTP_ERR_500));
Willy Tarreauf8533202008-08-16 14:55:08 +0200[diff] [blame]4025 trace_term(s, TT_HTTP_CNT_1);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]4026 if (!(s->flags & SN_ERR_MASK))
4027 s->flags |= SN_ERR_PRXCOND;
4028 if (!(s->flags & SN_FINST_MASK))
4029 s->flags |= SN_FINST_R;
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]4030 buffer_stop_hijack(s->rep);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]4031 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4032}
4033
4034
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4035/* Iterate the same filter through all request headers.
4036 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4037 * Since it can manage the switch to another backend, it updates the per-proxy
4038 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4039 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4040int apply_filter_to_req_headers(struct session *t, struct buffer *req, struct hdr_exp *exp)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4041{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4042 char term;
4043 char *cur_ptr, *cur_end, *cur_next;
4044 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4045 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4046 struct hdr_idx_elem *cur_hdr;
4047 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]4048
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4049 last_hdr = 0;
4050
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4051 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4052 old_idx = 0;
4053
4054 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4055 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4056 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4057 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4058 (exp->action == ACT_ALLOW ||
4059 exp->action == ACT_DENY ||
4060 exp->action == ACT_TARPIT))
4061 return 0;
4062
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4063 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4064 if (!cur_idx)
4065 break;
4066
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4067 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4068 cur_ptr = cur_next;
4069 cur_end = cur_ptr + cur_hdr->len;
4070 cur_next = cur_end + cur_hdr->cr + 1;
4071
4072 /* Now we have one header between cur_ptr and cur_end,
4073 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4074 */
4075
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4076 /* The annoying part is that pattern matching needs
4077 * that we modify the contents to null-terminate all
4078 * strings before testing them.
4079 */
4080
4081 term = *cur_end;
4082 *cur_end = '\0';
4083
4084 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4085 switch (exp->action) {
4086 case ACT_SETBE:
4087 /* It is not possible to jump a second time.
4088 * FIXME: should we return an HTTP/500 here so that
4089 * the admin knows there's a problem ?
4090 */
4091 if (t->be != t->fe)
4092 break;
4093
4094 /* Swithing Proxy */
4095 t->be = (struct proxy *) exp->replace;
4096
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4097 /* right now, the backend switch is not overly complicated
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4098 * because we have associated req_cap and rsp_cap to the
4099 * frontend, and the beconn will be updated later.
4100 */
4101
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]4102 t->rep->rto = t->req->wto = t->be->timeout.server;
4103 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4104 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4105 last_hdr = 1;
4106 break;
4107
4108 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4109 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4110 last_hdr = 1;
4111 break;
4112
4113 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4114 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4115 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4116 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4117 break;
4118
4119 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4120 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4121 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4122 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4123 break;
4124
4125 case ACT_REPLACE:
4126 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4127 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
4128 /* FIXME: if the user adds a newline in the replacement, the
4129 * index will not be recalculated for now, and the new line
4130 * will not be counted as a new header.
4131 */
4132
4133 cur_end += delta;
4134 cur_next += delta;
4135 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4136 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4137 break;
4138
4139 case ACT_REMOVE:
4140 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
4141 cur_next += delta;
4142
4143 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4144 txn->req.eoh += delta;
4145 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4146 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4147 cur_hdr->len = 0;
4148 cur_end = NULL; /* null-term has been rewritten */
4149 break;
4150
4151 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4152 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4153 if (cur_end)
4154 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4155
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4156 /* keep the link from this header to next one in case of later
4157 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4158 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4159 old_idx = cur_idx;
4160 }
4161 return 0;
4162}
4163
4164
4165/* Apply the filter to the request line.
4166 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4167 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4168 * Since it can manage the switch to another backend, it updates the per-proxy
4169 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4170 */
4171int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
4172{
4173 char term;
4174 char *cur_ptr, *cur_end;
4175 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4176 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4177 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4178
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4179
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4180 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4181 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4182 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4183 (exp->action == ACT_ALLOW ||
4184 exp->action == ACT_DENY ||
4185 exp->action == ACT_TARPIT))
4186 return 0;
4187 else if (exp->action == ACT_REMOVE)
4188 return 0;
4189
4190 done = 0;
4191
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4192 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4193 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4194
4195 /* Now we have the request line between cur_ptr and cur_end */
4196
4197 /* The annoying part is that pattern matching needs
4198 * that we modify the contents to null-terminate all
4199 * strings before testing them.
4200 */
4201
4202 term = *cur_end;
4203 *cur_end = '\0';
4204
4205 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4206 switch (exp->action) {
4207 case ACT_SETBE:
4208 /* It is not possible to jump a second time.
4209 * FIXME: should we return an HTTP/500 here so that
4210 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4211 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4212 if (t->be != t->fe)
4213 break;
4214
4215 /* Swithing Proxy */
4216 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4217
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4218 /* right now, the backend switch is not too much complicated
4219 * because we have associated req_cap and rsp_cap to the
4220 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4221 */
4222
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]4223 t->rep->rto = t->req->wto = t->be->timeout.server;
4224 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4225 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4226 done = 1;
4227 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4228
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4229 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4230 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4231 done = 1;
4232 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4233
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4234 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4235 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4236 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4237 done = 1;
4238 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4239
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4240 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4241 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4242 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4243 done = 1;
4244 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4245
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4246 case ACT_REPLACE:
4247 *cur_end = term; /* restore the string terminator */
4248 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4249 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
4250 /* FIXME: if the user adds a newline in the replacement, the
4251 * index will not be recalculated for now, and the new line
4252 * will not be counted as a new header.
4253 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4254
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4255 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4256 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4257
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4258 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4259 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4260 HTTP_MSG_RQMETH,
4261 cur_ptr, cur_end + 1,
4262 NULL, NULL);
4263 if (unlikely(!cur_end))
4264 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4265
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4266 /* we have a full request and we know that we have either a CR
4267 * or an LF at <ptr>.
4268 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4269 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
4270 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]4271 /* there is no point trying this regex on headers */
4272 return 1;
4273 }
4274 }
4275 *cur_end = term; /* restore the string terminator */
4276 return done;
4277}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]4278
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4279
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4280
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4281/*
4282 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
4283 * 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]4284 * unparsable request. Since it can manage the switch to another backend, it
4285 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4286 */
4287int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
4288{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4289 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4290 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4291 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4292 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4293
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4294 /*
4295 * The interleaving of transformations and verdicts
4296 * makes it difficult to decide to continue or stop
4297 * the evaluation.
4298 */
4299
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4300 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4301 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4302 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
4303 exp = exp->next;
4304 continue;
4305 }
4306
4307 /* Apply the filter to the request line. */
4308 ret = apply_filter_to_req_line(t, req, exp);
4309 if (unlikely(ret < 0))
4310 return -1;
4311
4312 if (likely(ret == 0)) {
4313 /* The filter did not match the request, it can be
4314 * iterated through all headers.
4315 */
4316 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4317 }
4318 exp = exp->next;
4319 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4320 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4321}
4322
4323
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4324
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4325/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]4326 * Manage client-side cookie. It can impact performance by about 2% so it is
4327 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4328 */
4329void manage_client_side_cookies(struct session *t, struct buffer *req)
4330{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4331 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4332 char *p1, *p2, *p3, *p4;
4333 char *del_colon, *del_cookie, *colon;
4334 int app_cookies;
4335
4336 appsess *asession_temp = NULL;
4337 appsess local_asession;
4338
4339 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4340 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4341
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4342 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4343 * we start with the start line.
4344 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]4345 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4346 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4347
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4348 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4349 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4350 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4351
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4352 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4353 cur_ptr = cur_next;
4354 cur_end = cur_ptr + cur_hdr->len;
4355 cur_next = cur_end + cur_hdr->cr + 1;
4356
4357 /* We have one full header between cur_ptr and cur_end, and the
4358 * next header starts at cur_next. We're only interested in
4359 * "Cookie:" headers.
4360 */
4361
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4362 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
4363 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4364 old_idx = cur_idx;
4365 continue;
4366 }
4367
4368 /* Now look for cookies. Conforming to RFC2109, we have to support
4369 * attributes whose name begin with a '$', and associate them with
4370 * the right cookie, if we want to delete this cookie.
4371 * So there are 3 cases for each cookie read :
4372 * 1) it's a special attribute, beginning with a '$' : ignore it.
4373 * 2) it's a server id cookie that we *MAY* want to delete : save
4374 * some pointers on it (last semi-colon, beginning of cookie...)
4375 * 3) it's an application cookie : we *MAY* have to delete a previous
4376 * "special" cookie.
4377 * At the end of loop, if a "special" cookie remains, we may have to
4378 * remove it. If no application cookie persists in the header, we
4379 * *MUST* delete it
4380 */
4381
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4382 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4383
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4384 /* del_cookie == NULL => nothing to be deleted */
4385 del_colon = del_cookie = NULL;
4386 app_cookies = 0;
4387
4388 while (p1 < cur_end) {
4389 /* skip spaces and colons, but keep an eye on these ones */
4390 while (p1 < cur_end) {
4391 if (*p1 == ';' || *p1 == ',')
4392 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4393 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4394 break;
4395 p1++;
4396 }
4397
4398 if (p1 == cur_end)
4399 break;
4400
4401 /* p1 is at the beginning of the cookie name */
4402 p2 = p1;
4403 while (p2 < cur_end && *p2 != '=')
4404 p2++;
4405
4406 if (p2 == cur_end)
4407 break;
4408
4409 p3 = p2 + 1; /* skips the '=' sign */
4410 if (p3 == cur_end)
4411 break;
4412
4413 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4414 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4415 p4++;
4416
4417 /* here, we have the cookie name between p1 and p2,
4418 * and its value between p3 and p4.
4419 * we can process it :
4420 *
4421 * Cookie: NAME=VALUE;
4422 * | || || |
4423 * | || || +--> p4
4424 * | || |+-------> p3
4425 * | || +--------> p2
4426 * | |+------------> p1
4427 * | +-------------> colon
4428 * +--------------------> cur_ptr
4429 */
4430
4431 if (*p1 == '$') {
4432 /* skip this one */
4433 }
4434 else {
4435 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4436 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4437 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4438 (p4 - p1 >= t->fe->capture_namelen) &&
4439 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4440 int log_len = p4 - p1;
4441
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4442 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4443 Alert("HTTP logging : out of memory.\n");
4444 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4445 if (log_len > t->fe->capture_len)
4446 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4447 memcpy(txn->cli_cookie, p1, log_len);
4448 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4449 }
4450 }
4451
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4452 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4453 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4454 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4455 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4456 char *delim;
4457
4458 /* if we're in cookie prefix mode, we'll search the delimitor so that we
4459 * have the server ID betweek p3 and delim, and the original cookie between
4460 * delim+1 and p4. Otherwise, delim==p4 :
4461 *
4462 * Cookie: NAME=SRV~VALUE;
4463 * | || || | |
4464 * | || || | +--> p4
4465 * | || || +--------> delim
4466 * | || |+-----------> p3
4467 * | || +------------> p2
4468 * | |+----------------> p1
4469 * | +-----------------> colon
4470 * +------------------------> cur_ptr
4471 */
4472
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4473 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4474 for (delim = p3; delim < p4; delim++)
4475 if (*delim == COOKIE_DELIM)
4476 break;
4477 }
4478 else
4479 delim = p4;
4480
4481
4482 /* Here, we'll look for the first running server which supports the cookie.
4483 * This allows to share a same cookie between several servers, for example
4484 * to dedicate backup servers to specific servers only.
4485 * However, to prevent clients from sticking to cookie-less backup server
4486 * when they have incidentely learned an empty cookie, we simply ignore
4487 * empty cookies and mark them as invalid.
4488 */
4489 if (delim == p3)
4490 srv = NULL;
4491
4492 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]4493 if (srv->cookie && (srv->cklen == delim - p3) &&
4494 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4495 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4496 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4497 txn->flags &= ~TX_CK_MASK;
4498 txn->flags |= TX_CK_VALID;
4499 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4500 t->srv = srv;
4501 break;
4502 } else {
4503 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4504 txn->flags &= ~TX_CK_MASK;
4505 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4506 }
4507 }
4508 srv = srv->next;
4509 }
4510
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4511 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4512 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4513 txn->flags &= ~TX_CK_MASK;
4514 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4515 }
4516
4517 /* depending on the cookie mode, we may have to either :
4518 * - delete the complete cookie if we're in insert+indirect mode, so that
4519 * the server never sees it ;
4520 * - remove the server id from the cookie value, and tag the cookie as an
4521 * application cookie so that it does not get accidentely removed later,
4522 * if we're in cookie prefix mode
4523 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4524 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4525 int delta; /* negative */
4526
4527 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
4528 p4 += delta;
4529 cur_end += delta;
4530 cur_next += delta;
4531 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4532 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4533
4534 del_cookie = del_colon = NULL;
4535 app_cookies++; /* protect the header from deletion */
4536 }
4537 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4538 (t->be->options & (PR_O_COOK_INS | PR_O_COOK_IND)) == (PR_O_COOK_INS | PR_O_COOK_IND)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4539 del_cookie = p1;
4540 del_colon = colon;
4541 }
4542 } else {
4543 /* now we know that we must keep this cookie since it's
4544 * not ours. But if we wanted to delete our cookie
4545 * earlier, we cannot remove the complete header, but we
4546 * can remove the previous block itself.
4547 */
4548 app_cookies++;
4549
4550 if (del_cookie != NULL) {
4551 int delta; /* negative */
4552
4553 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
4554 p4 += delta;
4555 cur_end += delta;
4556 cur_next += delta;
4557 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4558 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4559 del_cookie = del_colon = NULL;
4560 }
4561 }
4562
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4563 if ((t->be->appsession_name != NULL) &&
4564 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4565 /* first, let's see if the cookie is our appcookie*/
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4566
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4567 /* Cool... it's the right one */
4568
4569 asession_temp = &local_asession;
4570
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4571 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4572 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
4573 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
4574 return;
4575 }
4576
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4577 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4578 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4579 asession_temp->serverid = NULL;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4580
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4581 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4582 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4583 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4584 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4585 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4586 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4587 Alert("Not enough memory process_cli():asession:calloc().\n");
4588 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4589 return;
4590 }
4591
4592 asession_temp->sessid = local_asession.sessid;
4593 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4594 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4595 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4596 } else {
4597 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4598 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4599 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4600 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4601 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4602 Alert("Found Application Session without matching server.\n");
4603 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4604 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4605 while (srv) {
4606 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4607 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4608 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4609 txn->flags &= ~TX_CK_MASK;
4610 txn->flags |= TX_CK_VALID;
4611 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4612 t->srv = srv;
4613 break;
4614 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4615 txn->flags &= ~TX_CK_MASK;
4616 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4617 }
4618 }
4619 srv = srv->next;
4620 }/* end while(srv) */
4621 }/* end else if server == NULL */
4622
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4623 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4624 asession_temp->request_count++;
4625#if defined(DEBUG_HASH)
4626 Alert("manage_client_side_cookies\n");
4627 appsession_hash_dump(&(t->be->htbl_proxy));
4628#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4629 }/* end if ((t->proxy->appsession_name != NULL) ... */
4630 }
4631
4632 /* we'll have to look for another cookie ... */
4633 p1 = p4;
4634 } /* while (p1 < cur_end) */
4635
4636 /* There's no more cookie on this line.
4637 * We may have marked the last one(s) for deletion.
4638 * We must do this now in two ways :
4639 * - if there is no app cookie, we simply delete the header ;
4640 * - if there are app cookies, we must delete the end of the
4641 * string properly, including the colon/semi-colon before
4642 * the cookie name.
4643 */
4644 if (del_cookie != NULL) {
4645 int delta;
4646 if (app_cookies) {
4647 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
4648 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4649 cur_hdr->len += delta;
4650 } else {
4651 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4652
4653 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4654 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4655 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4656 cur_hdr->len = 0;
4657 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]4658 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4659 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4660 }
4661
4662 /* keep the link from this header to next one */
4663 old_idx = cur_idx;
4664 } /* end of cookie processing on this header */
4665}
4666
4667
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4668/* Iterate the same filter through all response headers contained in <rtr>.
4669 * Returns 1 if this filter can be stopped upon return, otherwise 0.
4670 */
4671int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4672{
4673 char term;
4674 char *cur_ptr, *cur_end, *cur_next;
4675 int cur_idx, old_idx, last_hdr;
4676 struct http_txn *txn = &t->txn;
4677 struct hdr_idx_elem *cur_hdr;
4678 int len, delta;
4679
4680 last_hdr = 0;
4681
4682 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4683 old_idx = 0;
4684
4685 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4686 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4687 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4688 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4689 (exp->action == ACT_ALLOW ||
4690 exp->action == ACT_DENY))
4691 return 0;
4692
4693 cur_idx = txn->hdr_idx.v[old_idx].next;
4694 if (!cur_idx)
4695 break;
4696
4697 cur_hdr = &txn->hdr_idx.v[cur_idx];
4698 cur_ptr = cur_next;
4699 cur_end = cur_ptr + cur_hdr->len;
4700 cur_next = cur_end + cur_hdr->cr + 1;
4701
4702 /* Now we have one header between cur_ptr and cur_end,
4703 * and the next header starts at cur_next.
4704 */
4705
4706 /* The annoying part is that pattern matching needs
4707 * that we modify the contents to null-terminate all
4708 * strings before testing them.
4709 */
4710
4711 term = *cur_end;
4712 *cur_end = '\0';
4713
4714 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4715 switch (exp->action) {
4716 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4717 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4718 last_hdr = 1;
4719 break;
4720
4721 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4722 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4723 last_hdr = 1;
4724 break;
4725
4726 case ACT_REPLACE:
4727 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4728 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4729 /* FIXME: if the user adds a newline in the replacement, the
4730 * index will not be recalculated for now, and the new line
4731 * will not be counted as a new header.
4732 */
4733
4734 cur_end += delta;
4735 cur_next += delta;
4736 cur_hdr->len += delta;
4737 txn->rsp.eoh += delta;
4738 break;
4739
4740 case ACT_REMOVE:
4741 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4742 cur_next += delta;
4743
4744 /* FIXME: this should be a separate function */
4745 txn->rsp.eoh += delta;
4746 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4747 txn->hdr_idx.used--;
4748 cur_hdr->len = 0;
4749 cur_end = NULL; /* null-term has been rewritten */
4750 break;
4751
4752 }
4753 }
4754 if (cur_end)
4755 *cur_end = term; /* restore the string terminator */
4756
4757 /* keep the link from this header to next one in case of later
4758 * removal of next header.
4759 */
4760 old_idx = cur_idx;
4761 }
4762 return 0;
4763}
4764
4765
4766/* Apply the filter to the status line in the response buffer <rtr>.
4767 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4768 * or -1 if a replacement resulted in an invalid status line.
4769 */
4770int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4771{
4772 char term;
4773 char *cur_ptr, *cur_end;
4774 int done;
4775 struct http_txn *txn = &t->txn;
4776 int len, delta;
4777
4778
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4779 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4780 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4781 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4782 (exp->action == ACT_ALLOW ||
4783 exp->action == ACT_DENY))
4784 return 0;
4785 else if (exp->action == ACT_REMOVE)
4786 return 0;
4787
4788 done = 0;
4789
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4790 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4791 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4792
4793 /* Now we have the status line between cur_ptr and cur_end */
4794
4795 /* The annoying part is that pattern matching needs
4796 * that we modify the contents to null-terminate all
4797 * strings before testing them.
4798 */
4799
4800 term = *cur_end;
4801 *cur_end = '\0';
4802
4803 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4804 switch (exp->action) {
4805 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4806 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4807 done = 1;
4808 break;
4809
4810 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4811 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4812 done = 1;
4813 break;
4814
4815 case ACT_REPLACE:
4816 *cur_end = term; /* restore the string terminator */
4817 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4818 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4819 /* FIXME: if the user adds a newline in the replacement, the
4820 * index will not be recalculated for now, and the new line
4821 * will not be counted as a new header.
4822 */
4823
4824 txn->rsp.eoh += delta;
4825 cur_end += delta;
4826
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4827 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4828 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4829 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4830 cur_ptr, cur_end + 1,
4831 NULL, NULL);
4832 if (unlikely(!cur_end))
4833 return -1;
4834
4835 /* we have a full respnse and we know that we have either a CR
4836 * or an LF at <ptr>.
4837 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4838 txn->status = strl2ui(rtr->data + txn->rsp.sl.st.c, txn->rsp.sl.st.c_l);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4839 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4840 /* there is no point trying this regex on headers */
4841 return 1;
4842 }
4843 }
4844 *cur_end = term; /* restore the string terminator */
4845 return done;
4846}
4847
4848
4849
4850/*
4851 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4852 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4853 * unparsable response.
4854 */
4855int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4856{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4857 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4858 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4859 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4860 int ret;
4861
4862 /*
4863 * The interleaving of transformations and verdicts
4864 * makes it difficult to decide to continue or stop
4865 * the evaluation.
4866 */
4867
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4868 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4869 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4870 exp->action == ACT_PASS)) {
4871 exp = exp->next;
4872 continue;
4873 }
4874
4875 /* Apply the filter to the status line. */
4876 ret = apply_filter_to_sts_line(t, rtr, exp);
4877 if (unlikely(ret < 0))
4878 return -1;
4879
4880 if (likely(ret == 0)) {
4881 /* The filter did not match the response, it can be
4882 * iterated through all headers.
4883 */
4884 apply_filter_to_resp_headers(t, rtr, exp);
4885 }
4886 exp = exp->next;
4887 }
4888 return 0;
4889}
4890
4891
4892
4893/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]4894 * Manage server-side cookies. It can impact performance by about 2% so it is
4895 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4896 */
4897void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4898{
4899 struct http_txn *txn = &t->txn;
4900 char *p1, *p2, *p3, *p4;
4901
4902 appsess *asession_temp = NULL;
4903 appsess local_asession;
4904
4905 char *cur_ptr, *cur_end, *cur_next;
4906 int cur_idx, old_idx, delta;
4907
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4908 /* Iterate through the headers.
4909 * we start with the start line.
4910 */
4911 old_idx = 0;
4912 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4913
4914 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4915 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4916 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4917
4918 cur_hdr = &txn->hdr_idx.v[cur_idx];
4919 cur_ptr = cur_next;
4920 cur_end = cur_ptr + cur_hdr->len;
4921 cur_next = cur_end + cur_hdr->cr + 1;
4922
4923 /* We have one full header between cur_ptr and cur_end, and the
4924 * next header starts at cur_next. We're only interested in
4925 * "Cookie:" headers.
4926 */
4927
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4928 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4929 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4930 old_idx = cur_idx;
4931 continue;
4932 }
4933
4934 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4935 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4936
4937
4938 /* maybe we only wanted to see if there was a set-cookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4939 if (t->be->cookie_name == NULL &&
4940 t->be->appsession_name == NULL &&
4941 t->be->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4942 return;
4943
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4944 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4945
4946 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4947 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4948 break;
4949
4950 /* p1 is at the beginning of the cookie name */
4951 p2 = p1;
4952
4953 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4954 p2++;
4955
4956 if (p2 == cur_end || *p2 == ';') /* next cookie */
4957 break;
4958
4959 p3 = p2 + 1; /* skip the '=' sign */
4960 if (p3 == cur_end)
4961 break;
4962
4963 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4964 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4965 p4++;
4966
4967 /* here, we have the cookie name between p1 and p2,
4968 * and its value between p3 and p4.
4969 * we can process it.
4970 */
4971
4972 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4973 if (t->be->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4974 txn->srv_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4975 (p4 - p1 >= t->be->capture_namelen) &&
4976 memcmp(p1, t->be->capture_name, t->be->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4977 int log_len = p4 - p1;
4978
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4979 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4980 Alert("HTTP logging : out of memory.\n");
4981 }
4982
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4983 if (log_len > t->be->capture_len)
4984 log_len = t->be->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4985 memcpy(txn->srv_cookie, p1, log_len);
4986 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4987 }
4988
4989 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4990 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4991 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4992 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4993 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4994
4995 /* If the cookie is in insert mode on a known server, we'll delete
4996 * this occurrence because we'll insert another one later.
4997 * We'll delete it too if the "indirect" option is set and we're in
4998 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4999 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
5000 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5001 /* this header must be deleted */
5002 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
5003 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5004 txn->hdr_idx.used--;
5005 cur_hdr->len = 0;
5006 cur_next += delta;
5007 txn->rsp.eoh += delta;
5008
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5009 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5010 }
5011 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5012 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5013 /* replace bytes p3->p4 with the cookie name associated
5014 * with this server since we know it.
5015 */
5016 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
5017 cur_hdr->len += delta;
5018 cur_next += delta;
5019 txn->rsp.eoh += delta;
5020
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5021 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5022 }
5023 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5024 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5025 /* insert the cookie name associated with this server
5026 * before existing cookie, and insert a delimitor between them..
5027 */
5028 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
5029 cur_hdr->len += delta;
5030 cur_next += delta;
5031 txn->rsp.eoh += delta;
5032
5033 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5034 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5035 }
5036 }
5037 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5038 else if ((t->be->appsession_name != NULL) &&
5039 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5040
5041 /* Cool... it's the right one */
5042
5043 size_t server_id_len = strlen(t->srv->id) + 1;
5044 asession_temp = &local_asession;
5045
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5046 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5047 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
5048 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
5049 return;
5050 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5051 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
5052 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5053 asession_temp->serverid = NULL;
5054
5055 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]5056 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
5057 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5058 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5059 Alert("Not enough Memory process_srv():asession:calloc().\n");
5060 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
5061 return;
5062 }
5063 asession_temp->sessid = local_asession.sessid;
5064 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]5065 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5066 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
5067 } else {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5068 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5069 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5070 }
5071
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5072 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5073 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5074 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
5075 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
5076 return;
5077 }
5078 asession_temp->serverid[0] = '\0';
5079 }
5080
5081 if (asession_temp->serverid[0] == '\0')
5082 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
5083
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]5084 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]5085 asession_temp->request_count++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5086#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]5087 Alert("manage_server_side_cookies\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5088 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5089#endif
5090 }/* end if ((t->proxy->appsession_name != NULL) ... */
5091 break; /* we don't want to loop again since there cannot be another cookie on the same line */
5092 } /* we're now at the end of the cookie value */
5093
5094 /* keep the link from this header to next one */
5095 old_idx = cur_idx;
5096 } /* end of cookie processing on this header */
5097}
5098
5099
5100
5101/*
5102 * Check if response is cacheable or not. Updates t->flags.
5103 */
5104void check_response_for_cacheability(struct session *t, struct buffer *rtr)
5105{
5106 struct http_txn *txn = &t->txn;
5107 char *p1, *p2;
5108
5109 char *cur_ptr, *cur_end, *cur_next;
5110 int cur_idx;
5111
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]5112 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5113 return;
5114
5115 /* Iterate through the headers.
5116 * we start with the start line.
5117 */
5118 cur_idx = 0;
5119 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
5120
5121 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
5122 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5123 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5124
5125 cur_hdr = &txn->hdr_idx.v[cur_idx];
5126 cur_ptr = cur_next;
5127 cur_end = cur_ptr + cur_hdr->len;
5128 cur_next = cur_end + cur_hdr->cr + 1;
5129
5130 /* We have one full header between cur_ptr and cur_end, and the
5131 * next header starts at cur_next. We're only interested in
5132 * "Cookie:" headers.
5133 */
5134
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5135 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
5136 if (val) {
5137 if ((cur_end - (cur_ptr + val) >= 8) &&
5138 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
5139 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5140 return;
5141 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5142 }
5143
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5144 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
5145 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5146 continue;
5147
5148 /* OK, right now we know we have a cache-control header at cur_ptr */
5149
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5150 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5151
5152 if (p1 >= cur_end) /* no more info */
5153 continue;
5154
5155 /* p1 is at the beginning of the value */
5156 p2 = p1;
5157
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5158 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5159 p2++;
5160
5161 /* we have a complete value between p1 and p2 */
5162 if (p2 < cur_end && *p2 == '=') {
5163 /* we have something of the form no-cache="set-cookie" */
5164 if ((cur_end - p1 >= 21) &&
5165 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
5166 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5167 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5168 continue;
5169 }
5170
5171 /* OK, so we know that either p2 points to the end of string or to a comma */
5172 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
5173 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
5174 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
5175 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5176 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5177 return;
5178 }
5179
5180 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5181 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5182 continue;
5183 }
5184 }
5185}
5186
5187
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5188/*
5189 * Try to retrieve a known appsession in the URI, then the associated server.
5190 * If the server is found, it's assigned to the session.
5191 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5192void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5193{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5194 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5195 appsess *asession_temp = NULL;
5196 appsess local_asession;
5197 char *request_line;
5198
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5199 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]5200 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5201 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5202 ((1 + t->be->appsession_name_len + 1 + t->be->appsession_len) > (begin + len - request_line)))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5203 return;
5204
5205 /* skip ';' */
5206 request_line++;
5207
5208 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5209 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5210 return;
5211
5212 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5213 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5214
5215 /* First try if we already have an appsession */
5216 asession_temp = &local_asession;
5217
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5218 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5219 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
5220 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
5221 return;
5222 }
5223
5224 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5225 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
5226 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5227 asession_temp->serverid = NULL;
5228
5229 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]5230 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
5231 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5232 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5233 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5234 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5235 Alert("Not enough memory process_cli():asession:calloc().\n");
5236 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
5237 return;
5238 }
5239 asession_temp->sessid = local_asession.sessid;
5240 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]5241 asession_temp->request_count=0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5242 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5243 }
5244 else {
5245 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5246 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5247 }
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5248
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]5249 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5250 asession_temp->request_count++;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5251
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5252#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]5253 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5254 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5255#endif
5256 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]5257 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5258 Alert("Found Application Session without matching server.\n");
5259 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5260 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5261 while (srv) {
5262 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5263 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5264 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5265 txn->flags &= ~TX_CK_MASK;
5266 txn->flags |= TX_CK_VALID;
5267 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5268 t->srv = srv;
5269 break;
5270 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5271 txn->flags &= ~TX_CK_MASK;
5272 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5273 }
5274 }
5275 srv = srv->next;
5276 }
5277 }
5278}
5279
5280
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5281/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5282 * In a GET or HEAD request, check if the requested URI matches the stats uri
5283 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5284 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5285 * It is assumed that the request is either a HEAD or GET and that the
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5286 * t->be->uri_auth field is valid. An HTTP/401 response may be sent, or
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5287 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5288 *
5289 * Returns 1 if the session's state changes, otherwise 0.
5290 */
5291int stats_check_uri_auth(struct session *t, struct proxy *backend)
5292{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5293 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5294 struct uri_auth *uri_auth = backend->uri_auth;
5295 struct user_auth *user;
5296 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5297 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5298
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]5299 memset(&t->data_ctx.stats, 0, sizeof(t->data_ctx.stats));
5300
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5301 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5302 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5303 return 0;
5304
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5305 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5306
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5307 /* the URI is in h */
5308 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5309 return 0;
5310
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]5311 h += uri_auth->uri_len;
5312 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
5313 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]5314 t->data_ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]5315 break;
5316 }
5317 h++;
5318 }
5319
5320 if (uri_auth->refresh) {
5321 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
5322 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
5323 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]5324 t->data_ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]5325 break;
5326 }
5327 h++;
5328 }
5329 }
5330
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]5331 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
5332 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
5333 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]5334 t->data_ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]5335 break;
5336 }
5337 h++;
5338 }
5339
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]5340 t->data_ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
5341
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5342 /* we are in front of a interceptable URI. Let's check
5343 * if there's an authentication and if it's valid.
5344 */
5345 user = uri_auth->users;
5346 if (!user) {
5347 /* no user auth required, it's OK */
5348 authenticated = 1;
5349 } else {
5350 authenticated = 0;
5351
5352 /* a user list is defined, we have to check.
5353 * skip 21 chars for "Authorization: Basic ".
5354 */
5355
5356 /* FIXME: this should move to an earlier place */
5357 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5358 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
5359 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
5360 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5361 if (len > 14 &&
5362 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5363 txn->auth_hdr.str = h;
5364 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5365 break;
5366 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5367 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5368 }
5369
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5370 if (txn->auth_hdr.len < 21 ||
5371 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5372 user = NULL;
5373
5374 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5375 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
5376 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5377 user->user_pwd, user->user_len)) {
5378 authenticated = 1;
5379 break;
5380 }
5381 user = user->next;
5382 }
5383 }
5384
5385 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5386 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5387
5388 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5389 msg.str = trash;
5390 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]5391 txn->status = 401;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5392 client_retnclose(t, &msg);
Willy Tarreauf8533202008-08-16 14:55:08 +0200[diff] [blame]5393 trace_term(t, TT_HTTP_URI_1);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5394 t->req->analysers = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5395 if (!(t->flags & SN_ERR_MASK))
5396 t->flags |= SN_ERR_PRXCOND;
5397 if (!(t->flags & SN_FINST_MASK))
5398 t->flags |= SN_FINST_R;
5399 return 1;
5400 }
5401
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]5402 /* The request is valid, the user is authenticated. Let's start sending
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5403 * data.
5404 */
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]5405 buffer_shutw_now(t->req);
5406 buffer_shutr_now(t->rep);
5407 buffer_start_hijack(t->rep);
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]5408 t->logs.tv_request = now;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5409 t->data_source = DATA_SRC_STATS;
5410 t->data_state = DATA_ST_INIT;
Willy Tarreau91e99932008-06-30 07:51:00 +0200[diff] [blame]5411 t->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5412 produce_content(t);
5413 return 1;
5414}
5415
5416
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5417/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5418 * Print a debug line with a header
5419 */
5420void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
5421{
5422 int len, max;
5423 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5424 dir, (unsigned short)t->req->prod->fd, (unsigned short)t->req->cons->fd);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5425 max = end - start;
5426 UBOUND(max, sizeof(trash) - len - 1);
5427 len += strlcpy2(trash + len, start, max + 1);
5428 trash[len++] = '\n';
5429 write(1, trash, len);
5430}
5431
5432
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5433/************************************************************************/
5434/* The code below is dedicated to ACL parsing and matching */
5435/************************************************************************/
5436
5437
5438
5439
5440/* 1. Check on METHOD
5441 * We use the pre-parsed method if it is known, and store its number as an
5442 * integer. If it is unknown, we use the pointer and the length.
5443 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5444static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5445{
5446 int len, meth;
5447
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5448 len = strlen(*text);
5449 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5450
5451 pattern->val.i = meth;
5452 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5453 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5454 if (!pattern->ptr.str)
5455 return 0;
5456 pattern->len = len;
5457 }
5458 return 1;
5459}
5460
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5461static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5462acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
5463 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5464{
5465 int meth;
5466 struct http_txn *txn = l7;
5467
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5468 if (!txn)
5469 return 0;
5470
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5471 if (txn->req.msg_state != HTTP_MSG_BODY)
5472 return 0;
5473
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5474 meth = txn->meth;
5475 test->i = meth;
5476 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5477 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5478 /* ensure the indexes are not affected */
5479 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5480 test->len = txn->req.sl.rq.m_l;
5481 test->ptr = txn->req.sol;
5482 }
5483 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5484 return 1;
5485}
5486
5487static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
5488{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]5489 int icase;
5490
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5491 if (test->i != pattern->val.i)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]5492 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5493
5494 if (test->i != HTTP_METH_OTHER)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]5495 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5496
5497 /* Other method, we must compare the strings */
5498 if (pattern->len != test->len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]5499 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]5500
5501 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
5502 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
5503 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]5504 return ACL_PAT_FAIL;
5505 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5506}
5507
5508/* 2. Check on Request/Status Version
5509 * We simply compare strings here.
5510 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5511static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5512{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5513 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5514 if (!pattern->ptr.str)
5515 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5516 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5517 return 1;
5518}
5519
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5520static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5521acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
5522 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5523{
5524 struct http_txn *txn = l7;
5525 char *ptr;
5526 int len;
5527
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5528 if (!txn)
5529 return 0;
5530
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5531 if (txn->req.msg_state != HTTP_MSG_BODY)
5532 return 0;
5533
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5534 len = txn->req.sl.rq.v_l;
5535 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
5536
5537 while ((len-- > 0) && (*ptr++ != '/'));
5538 if (len <= 0)
5539 return 0;
5540
5541 test->ptr = ptr;
5542 test->len = len;
5543
5544 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5545 return 1;
5546}
5547
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5548static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5549acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
5550 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5551{
5552 struct http_txn *txn = l7;
5553 char *ptr;
5554 int len;
5555
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5556 if (!txn)
5557 return 0;
5558
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5559 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5560 return 0;
5561
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5562 len = txn->rsp.sl.st.v_l;
5563 ptr = txn->rsp.sol;
5564
5565 while ((len-- > 0) && (*ptr++ != '/'));
5566 if (len <= 0)
5567 return 0;
5568
5569 test->ptr = ptr;
5570 test->len = len;
5571
5572 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5573 return 1;
5574}
5575
5576/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5577static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5578acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
5579 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5580{
5581 struct http_txn *txn = l7;
5582 char *ptr;
5583 int len;
5584
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5585 if (!txn)
5586 return 0;
5587
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5588 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5589 return 0;
5590
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5591 len = txn->rsp.sl.st.c_l;
5592 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
5593
5594 test->i = __strl2ui(ptr, len);
5595 test->flags = ACL_TEST_F_VOL_1ST;
5596 return 1;
5597}
5598
5599/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5600static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5601acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
5602 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5603{
5604 struct http_txn *txn = l7;
5605
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5606 if (!txn)
5607 return 0;
5608
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5609 if (txn->req.msg_state != HTTP_MSG_BODY)
5610 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5611
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5612 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5613 /* ensure the indexes are not affected */
5614 return 0;
5615
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5616 test->len = txn->req.sl.rq.u_l;
5617 test->ptr = txn->req.sol + txn->req.sl.rq.u;
5618
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5619 /* we do not need to set READ_ONLY because the data is in a buffer */
5620 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5621 return 1;
5622}
5623
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5624static int
5625acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5626 struct acl_expr *expr, struct acl_test *test)
5627{
5628 struct http_txn *txn = l7;
5629
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5630 if (!txn)
5631 return 0;
5632
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5633 if (txn->req.msg_state != HTTP_MSG_BODY)
5634 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5635
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5636 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5637 /* ensure the indexes are not affected */
5638 return 0;
5639
5640 /* Parse HTTP request */
5641 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
5642 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
5643 test->i = AF_INET;
5644
5645 /*
5646 * If we are parsing url in frontend space, we prepare backend stage
5647 * to not parse again the same url ! optimization lazyness...
5648 */
5649 if (px->options & PR_O_HTTP_PROXY)
5650 l4->flags |= SN_ADDR_SET;
5651
5652 test->flags = ACL_TEST_F_READ_ONLY;
5653 return 1;
5654}
5655
5656static int
5657acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
5658 struct acl_expr *expr, struct acl_test *test)
5659{
5660 struct http_txn *txn = l7;
5661
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5662 if (!txn)
5663 return 0;
5664
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5665 if (txn->req.msg_state != HTTP_MSG_BODY)
5666 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5667
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5668 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5669 /* ensure the indexes are not affected */
5670 return 0;
5671
5672 /* Same optimization as url_ip */
5673 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
5674 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
5675
5676 if (px->options & PR_O_HTTP_PROXY)
5677 l4->flags |= SN_ADDR_SET;
5678
5679 test->flags = ACL_TEST_F_READ_ONLY;
5680 return 1;
5681}
5682
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5683/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
5684 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
5685 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5686static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5687acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5688 struct acl_expr *expr, struct acl_test *test)
5689{
5690 struct http_txn *txn = l7;
5691 struct hdr_idx *idx = &txn->hdr_idx;
5692 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5693
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5694 if (!txn)
5695 return 0;
5696
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5697 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5698 /* search for header from the beginning */
5699 ctx->idx = 0;
5700
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5701 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5702 test->flags |= ACL_TEST_F_FETCH_MORE;
5703 test->flags |= ACL_TEST_F_VOL_HDR;
5704 test->len = ctx->vlen;
5705 test->ptr = (char *)ctx->line + ctx->val;
5706 return 1;
5707 }
5708
5709 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5710 test->flags |= ACL_TEST_F_VOL_HDR;
5711 return 0;
5712}
5713
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5714static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5715acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
5716 struct acl_expr *expr, struct acl_test *test)
5717{
5718 struct http_txn *txn = l7;
5719
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5720 if (!txn)
5721 return 0;
5722
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5723 if (txn->req.msg_state != HTTP_MSG_BODY)
5724 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5725
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5726 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5727 /* ensure the indexes are not affected */
5728 return 0;
5729
5730 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
5731}
5732
5733static int
5734acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
5735 struct acl_expr *expr, struct acl_test *test)
5736{
5737 struct http_txn *txn = l7;
5738
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5739 if (!txn)
5740 return 0;
5741
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5742 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5743 return 0;
5744
5745 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
5746}
5747
5748/* 6. Check on HTTP header count. The number of occurrences is returned.
5749 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5750 */
5751static int
5752acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5753 struct acl_expr *expr, struct acl_test *test)
5754{
5755 struct http_txn *txn = l7;
5756 struct hdr_idx *idx = &txn->hdr_idx;
5757 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5758 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5759
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5760 if (!txn)
5761 return 0;
5762
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5763 ctx.idx = 0;
5764 cnt = 0;
5765 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
5766 cnt++;
5767
5768 test->i = cnt;
5769 test->flags = ACL_TEST_F_VOL_HDR;
5770 return 1;
5771}
5772
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5773static int
5774acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5775 struct acl_expr *expr, struct acl_test *test)
5776{
5777 struct http_txn *txn = l7;
5778
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5779 if (!txn)
5780 return 0;
5781
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5782 if (txn->req.msg_state != HTTP_MSG_BODY)
5783 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5784
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5785 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5786 /* ensure the indexes are not affected */
5787 return 0;
5788
5789 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
5790}
5791
5792static int
5793acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5794 struct acl_expr *expr, struct acl_test *test)
5795{
5796 struct http_txn *txn = l7;
5797
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5798 if (!txn)
5799 return 0;
5800
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5801 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5802 return 0;
5803
5804 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
5805}
5806
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5807/* 7. Check on HTTP header's integer value. The integer value is returned.
5808 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5809 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5810 */
5811static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5812acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5813 struct acl_expr *expr, struct acl_test *test)
5814{
5815 struct http_txn *txn = l7;
5816 struct hdr_idx *idx = &txn->hdr_idx;
5817 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5818
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5819 if (!txn)
5820 return 0;
5821
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5822 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5823 /* search for header from the beginning */
5824 ctx->idx = 0;
5825
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5826 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5827 test->flags |= ACL_TEST_F_FETCH_MORE;
5828 test->flags |= ACL_TEST_F_VOL_HDR;
5829 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
5830 return 1;
5831 }
5832
5833 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5834 test->flags |= ACL_TEST_F_VOL_HDR;
5835 return 0;
5836}
5837
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5838static int
5839acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5840 struct acl_expr *expr, struct acl_test *test)
5841{
5842 struct http_txn *txn = l7;
5843
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5844 if (!txn)
5845 return 0;
5846
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5847 if (txn->req.msg_state != HTTP_MSG_BODY)
5848 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5849
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5850 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5851 /* ensure the indexes are not affected */
5852 return 0;
5853
5854 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
5855}
5856
5857static int
5858acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5859 struct acl_expr *expr, struct acl_test *test)
5860{
5861 struct http_txn *txn = l7;
5862
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5863 if (!txn)
5864 return 0;
5865
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5866 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5867 return 0;
5868
5869 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
5870}
5871
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5872/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
5873 * the first '/' after the possible hostname, and ends before the possible '?'.
5874 */
5875static int
5876acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
5877 struct acl_expr *expr, struct acl_test *test)
5878{
5879 struct http_txn *txn = l7;
5880 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5881
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5882 if (!txn)
5883 return 0;
5884
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5885 if (txn->req.msg_state != HTTP_MSG_BODY)
5886 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5887
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5888 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5889 /* ensure the indexes are not affected */
5890 return 0;
5891
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5892 end = txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
5893 ptr = http_get_path(txn);
5894 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5895 return 0;
5896
5897 /* OK, we got the '/' ! */
5898 test->ptr = ptr;
5899
5900 while (ptr < end && *ptr != '?')
5901 ptr++;
5902
5903 test->len = ptr - test->ptr;
5904
5905 /* we do not need to set READ_ONLY because the data is in a buffer */
5906 test->flags = ACL_TEST_F_VOL_1ST;
5907 return 1;
5908}
5909
5910
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5911
5912/************************************************************************/
5913/* All supported keywords must be declared here. */
5914/************************************************************************/
5915
5916/* Note: must not be declared <const> as its list will be overwritten */
5917static struct acl_kw_list acl_kws = {{ },{
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5918 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT },
5919 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5920 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE },
5921 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5922
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5923 { "url", acl_parse_str, acl_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5924 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5925 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5926 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5927 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5928 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
5929 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5930 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE },
5931 { "url_port", acl_parse_int, acl_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5932
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5933 /* note: we should set hdr* to use ACL_USE_HDR_VOLATILE, and chdr* to use L7REQ_VOLATILE */
5934 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5935 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5936 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5937 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5938 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5939 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5940 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
5941 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int, ACL_USE_L7REQ_VOLATILE },
5942 { "hdr_val", acl_parse_int, acl_fetch_chdr_val,acl_match_int, ACL_USE_L7REQ_VOLATILE },
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5943
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5944 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str, ACL_USE_L7RTR_VOLATILE },
5945 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE },
5946 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE },
5947 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end, ACL_USE_L7RTR_VOLATILE },
5948 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE },
5949 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE },
5950 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE },
5951 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int, ACL_USE_L7RTR_VOLATILE },
5952 { "shdr_val", acl_parse_int, acl_fetch_shdr_val,acl_match_int, ACL_USE_L7RTR_VOLATILE },
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5953
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5954 { "path", acl_parse_str, acl_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5955 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5956 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5957 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5958 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5959 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5960 { "path_dom", acl_parse_str, acl_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5961
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5962 { NULL, NULL, NULL, NULL },
5963
5964#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5965 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
5966 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
5967 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
5968 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
5969 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
5970 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
5971 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
5972
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5973 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
5974 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
5975 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
5976 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
5977 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
5978 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
5979 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
5980 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
5981
5982 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
5983 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
5984 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
5985 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
5986 { NULL, NULL, NULL, NULL },
5987#endif
5988}};
5989
5990
5991__attribute__((constructor))
5992static void __http_protocol_init(void)
5993{
5994 acl_register_keywords(&acl_kws);
5995}
5996
5997
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5998/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5999 * Local variables:
6000 * c-indent-level: 8
6001 * c-basic-offset: 8
6002 * End:
6003 */