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git01.mediatek.com / haproxy / 7bb651ec1d0cc124781e93341462507d622f2168 / . / src / proto_http.c
blob: e4662a3f386ce184e59bef1c8074f3d034307fea [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4 * Copyright 2000-2009 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>
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]44#include <proto/client.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]45#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]46#include <proto/fd.h>
47#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]48#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]49#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]50#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]51#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]52#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]53#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]54#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]55#include <proto/stream_interface.h>
Willy Tarreau2d212792008-08-27 21:41:35 +0200[diff] [blame]56#include <proto/stream_sock.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]57#include <proto/task.h>
58
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]59/* This is used by remote monitoring */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]60const char HTTP_200[] =
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]61 "HTTP/1.0 200 OK\r\n"
62 "Cache-Control: no-cache\r\n"
63 "Connection: close\r\n"
64 "Content-Type: text/html\r\n"
65 "\r\n"
66 "<html><body><h1>200 OK</h1>\nHAProxy: service ready.\n</body></html>\n";
67
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]68const struct chunk http_200_chunk = {
69 .str = (char *)&HTTP_200,
70 .len = sizeof(HTTP_200)-1
71};
72
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]73const char *HTTP_301 =
74 "HTTP/1.0 301 Moved Permantenly\r\n"
75 "Cache-Control: no-cache\r\n"
76 "Connection: close\r\n"
77 "Location: "; /* not terminated since it will be concatenated with the URL */
78
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]79const char *HTTP_302 =
80 "HTTP/1.0 302 Found\r\n"
81 "Cache-Control: no-cache\r\n"
82 "Connection: close\r\n"
83 "Location: "; /* not terminated since it will be concatenated with the URL */
84
85/* same as 302 except that the browser MUST retry with the GET method */
86const char *HTTP_303 =
87 "HTTP/1.0 303 See Other\r\n"
88 "Cache-Control: no-cache\r\n"
89 "Connection: close\r\n"
90 "Location: "; /* not terminated since it will be concatenated with the URL */
91
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]92/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
93const char *HTTP_401_fmt =
94 "HTTP/1.0 401 Unauthorized\r\n"
95 "Cache-Control: no-cache\r\n"
96 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]97 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]98 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
99 "\r\n"
100 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
101
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]102
103const int http_err_codes[HTTP_ERR_SIZE] = {
104 [HTTP_ERR_400] = 400,
105 [HTTP_ERR_403] = 403,
106 [HTTP_ERR_408] = 408,
107 [HTTP_ERR_500] = 500,
108 [HTTP_ERR_502] = 502,
109 [HTTP_ERR_503] = 503,
110 [HTTP_ERR_504] = 504,
111};
112
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]113static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]114 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]115 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]116 "Cache-Control: no-cache\r\n"
117 "Connection: close\r\n"
118 "Content-Type: text/html\r\n"
119 "\r\n"
120 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
121
122 [HTTP_ERR_403] =
123 "HTTP/1.0 403 Forbidden\r\n"
124 "Cache-Control: no-cache\r\n"
125 "Connection: close\r\n"
126 "Content-Type: text/html\r\n"
127 "\r\n"
128 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
129
130 [HTTP_ERR_408] =
131 "HTTP/1.0 408 Request Time-out\r\n"
132 "Cache-Control: no-cache\r\n"
133 "Connection: close\r\n"
134 "Content-Type: text/html\r\n"
135 "\r\n"
136 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
137
138 [HTTP_ERR_500] =
139 "HTTP/1.0 500 Server Error\r\n"
140 "Cache-Control: no-cache\r\n"
141 "Connection: close\r\n"
142 "Content-Type: text/html\r\n"
143 "\r\n"
144 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
145
146 [HTTP_ERR_502] =
147 "HTTP/1.0 502 Bad Gateway\r\n"
148 "Cache-Control: no-cache\r\n"
149 "Connection: close\r\n"
150 "Content-Type: text/html\r\n"
151 "\r\n"
152 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
153
154 [HTTP_ERR_503] =
155 "HTTP/1.0 503 Service Unavailable\r\n"
156 "Cache-Control: no-cache\r\n"
157 "Connection: close\r\n"
158 "Content-Type: text/html\r\n"
159 "\r\n"
160 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
161
162 [HTTP_ERR_504] =
163 "HTTP/1.0 504 Gateway Time-out\r\n"
164 "Cache-Control: no-cache\r\n"
165 "Connection: close\r\n"
166 "Content-Type: text/html\r\n"
167 "\r\n"
168 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
169
170};
171
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]172/* We must put the messages here since GCC cannot initialize consts depending
173 * on strlen().
174 */
175struct chunk http_err_chunks[HTTP_ERR_SIZE];
176
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]177#define FD_SETS_ARE_BITFIELDS
178#ifdef FD_SETS_ARE_BITFIELDS
179/*
180 * This map is used with all the FD_* macros to check whether a particular bit
181 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
182 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
183 * byte should be encoded. Be careful to always pass bytes from 0 to 255
184 * exclusively to the macros.
185 */
186fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
187fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
188
189#else
190#error "Check if your OS uses bitfields for fd_sets"
191#endif
192
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]193void init_proto_http()
194{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]195 int i;
196 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]197 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]198
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]199 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
200 if (!http_err_msgs[msg]) {
201 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
202 abort();
203 }
204
205 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
206 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
207 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]208
209 /* initialize the log header encoding map : '{|}"#' should be encoded with
210 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
211 * URL encoding only requires '"', '#' to be encoded as well as non-
212 * printable characters above.
213 */
214 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
215 memset(url_encode_map, 0, sizeof(url_encode_map));
216 for (i = 0; i < 32; i++) {
217 FD_SET(i, hdr_encode_map);
218 FD_SET(i, url_encode_map);
219 }
220 for (i = 127; i < 256; i++) {
221 FD_SET(i, hdr_encode_map);
222 FD_SET(i, url_encode_map);
223 }
224
225 tmp = "\"#{|}";
226 while (*tmp) {
227 FD_SET(*tmp, hdr_encode_map);
228 tmp++;
229 }
230
231 tmp = "\"#";
232 while (*tmp) {
233 FD_SET(*tmp, url_encode_map);
234 tmp++;
235 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]236
237 /* memory allocations */
238 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]239 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]240}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]241
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]242/*
243 * We have 26 list of methods (1 per first letter), each of which can have
244 * up to 3 entries (2 valid, 1 null).
245 */
246struct http_method_desc {
247 http_meth_t meth;
248 int len;
249 const char text[8];
250};
251
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]252const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]253 ['C' - 'A'] = {
254 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
255 },
256 ['D' - 'A'] = {
257 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
258 },
259 ['G' - 'A'] = {
260 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
261 },
262 ['H' - 'A'] = {
263 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
264 },
265 ['P' - 'A'] = {
266 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
267 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
268 },
269 ['T' - 'A'] = {
270 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
271 },
272 /* rest is empty like this :
273 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
274 */
275};
276
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]277/* 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]278 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]279 * RFC2616 for those chars.
280 */
281
282const char http_is_spht[256] = {
283 [' '] = 1, ['\t'] = 1,
284};
285
286const char http_is_crlf[256] = {
287 ['\r'] = 1, ['\n'] = 1,
288};
289
290const char http_is_lws[256] = {
291 [' '] = 1, ['\t'] = 1,
292 ['\r'] = 1, ['\n'] = 1,
293};
294
295const char http_is_sep[256] = {
296 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
297 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
298 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
299 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
300 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
301};
302
303const char http_is_ctl[256] = {
304 [0 ... 31] = 1,
305 [127] = 1,
306};
307
308/*
309 * A token is any ASCII char that is neither a separator nor a CTL char.
310 * Do not overwrite values in assignment since gcc-2.95 will not handle
311 * them correctly. Instead, define every non-CTL char's status.
312 */
313const char http_is_token[256] = {
314 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
315 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
316 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
317 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
318 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
319 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
320 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
321 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
322 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
323 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
324 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
325 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
326 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
327 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
328 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
329 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
330 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
331 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
332 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
333 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
334 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
335 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
336 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
337 ['|'] = 1, ['}'] = 0, ['~'] = 1,
338};
339
340
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]341/*
342 * An http ver_token is any ASCII which can be found in an HTTP version,
343 * which includes 'H', 'T', 'P', '/', '.' and any digit.
344 */
345const char http_is_ver_token[256] = {
346 ['.'] = 1, ['/'] = 1,
347 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
348 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
349 ['H'] = 1, ['P'] = 1, ['T'] = 1,
350};
351
352
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]353/*
354 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
355 * CRLF. Text length is measured first, so it cannot be NULL.
356 * The header is also automatically added to the index <hdr_idx>, and the end
357 * of headers is automatically adjusted. The number of bytes added is returned
358 * on success, otherwise <0 is returned indicating an error.
359 */
360int http_header_add_tail(struct buffer *b, struct http_msg *msg,
361 struct hdr_idx *hdr_idx, const char *text)
362{
363 int bytes, len;
364
365 len = strlen(text);
366 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
367 if (!bytes)
368 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]369 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]370 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
371}
372
373/*
374 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
375 * CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
376 * the buffer is only opened and the space reserved, but nothing is copied.
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_tail2(struct buffer *b, struct http_msg *msg,
382 struct hdr_idx *hdr_idx, const char *text, int len)
383{
384 int bytes;
385
386 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
387 if (!bytes)
388 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]389 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]390 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
391}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]392
393/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]394 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
395 * If so, returns the position of the first non-space character relative to
396 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
397 * to return a pointer to the place after the first space. Returns 0 if the
398 * header name does not match. Checks are case-insensitive.
399 */
400int http_header_match2(const char *hdr, const char *end,
401 const char *name, int len)
402{
403 const char *val;
404
405 if (hdr + len >= end)
406 return 0;
407 if (hdr[len] != ':')
408 return 0;
409 if (strncasecmp(hdr, name, len) != 0)
410 return 0;
411 val = hdr + len + 1;
412 while (val < end && HTTP_IS_SPHT(*val))
413 val++;
414 if ((val >= end) && (len + 2 <= end - hdr))
415 return len + 2; /* we may replace starting from second space */
416 return val - hdr;
417}
418
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]419/* Find the end of the header value contained between <s> and <e>.
420 * See RFC2616, par 2.2 for more information. Note that it requires
421 * a valid header to return a valid result.
422 */
423const char *find_hdr_value_end(const char *s, const char *e)
424{
425 int quoted, qdpair;
426
427 quoted = qdpair = 0;
428 for (; s < e; s++) {
429 if (qdpair) qdpair = 0;
430 else if (quoted && *s == '\\') qdpair = 1;
431 else if (quoted && *s == '"') quoted = 0;
432 else if (*s == '"') quoted = 1;
433 else if (*s == ',') return s;
434 }
435 return s;
436}
437
438/* Find the first or next occurrence of header <name> in message buffer <sol>
439 * using headers index <idx>, and return it in the <ctx> structure. This
440 * structure holds everything necessary to use the header and find next
441 * occurrence. If its <idx> member is 0, the header is searched from the
442 * beginning. Otherwise, the next occurrence is returned. The function returns
443 * 1 when it finds a value, and 0 when there is no more.
444 */
445int http_find_header2(const char *name, int len,
446 const char *sol, struct hdr_idx *idx,
447 struct hdr_ctx *ctx)
448{
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]449 const char *eol, *sov;
450 int cur_idx;
451
452 if (ctx->idx) {
453 /* We have previously returned a value, let's search
454 * another one on the same line.
455 */
456 cur_idx = ctx->idx;
457 sol = ctx->line;
458 sov = sol + ctx->val + ctx->vlen;
459 eol = sol + idx->v[cur_idx].len;
460
461 if (sov >= eol)
462 /* no more values in this header */
463 goto next_hdr;
464
465 /* values remaining for this header, skip the comma */
466 sov++;
467 while (sov < eol && http_is_lws[(unsigned char)*sov])
468 sov++;
469
470 goto return_hdr;
471 }
472
473 /* first request for this header */
474 sol += hdr_idx_first_pos(idx);
475 cur_idx = hdr_idx_first_idx(idx);
476
477 while (cur_idx) {
478 eol = sol + idx->v[cur_idx].len;
479
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]480 if (len == 0) {
481 /* No argument was passed, we want any header.
482 * To achieve this, we simply build a fake request. */
483 while (sol + len < eol && sol[len] != ':')
484 len++;
485 name = sol;
486 }
487
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]488 if ((len < eol - sol) &&
489 (sol[len] == ':') &&
490 (strncasecmp(sol, name, len) == 0)) {
491
492 sov = sol + len + 1;
493 while (sov < eol && http_is_lws[(unsigned char)*sov])
494 sov++;
495 return_hdr:
496 ctx->line = sol;
497 ctx->idx = cur_idx;
498 ctx->val = sov - sol;
499
500 eol = find_hdr_value_end(sov, eol);
501 ctx->vlen = eol - sov;
502 return 1;
503 }
504 next_hdr:
505 sol = eol + idx->v[cur_idx].cr + 1;
506 cur_idx = idx->v[cur_idx].next;
507 }
508 return 0;
509}
510
511int http_find_header(const char *name,
512 const char *sol, struct hdr_idx *idx,
513 struct hdr_ctx *ctx)
514{
515 return http_find_header2(name, strlen(name), sol, idx, ctx);
516}
517
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]518/* This function handles a server error at the stream interface level. The
519 * stream interface is assumed to be already in a closed state. An optional
520 * message is copied into the input buffer, and an HTTP status code stored.
521 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]522 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]523 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]524static void http_server_error(struct session *t, struct stream_interface *si,
525 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]526{
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]527 buffer_erase(si->ob);
528 buffer_erase(si->ib);
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]529 buffer_auto_close(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]530 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]531 t->txn.status = status;
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]532 buffer_write(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]533 }
534 if (!(t->flags & SN_ERR_MASK))
535 t->flags |= err;
536 if (!(t->flags & SN_FINST_MASK))
537 t->flags |= finst;
538}
539
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]540/* This function returns the appropriate error location for the given session
541 * and message.
542 */
543
544struct chunk *error_message(struct session *s, int msgnum)
545{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]546 if (s->be->errmsg[msgnum].str)
547 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]548 else if (s->fe->errmsg[msgnum].str)
549 return &s->fe->errmsg[msgnum];
550 else
551 return &http_err_chunks[msgnum];
552}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]553
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]554/*
555 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
556 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
557 */
558static http_meth_t find_http_meth(const char *str, const int len)
559{
560 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]561 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]562
563 m = ((unsigned)*str - 'A');
564
565 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]566 for (h = http_methods[m]; h->len > 0; h++) {
567 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]568 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]569 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]570 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]571 };
572 return HTTP_METH_OTHER;
573 }
574 return HTTP_METH_NONE;
575
576}
577
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]578/* Parse the URI from the given transaction (which is assumed to be in request
579 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
580 * It is returned otherwise.
581 */
582static char *
583http_get_path(struct http_txn *txn)
584{
585 char *ptr, *end;
586
587 ptr = txn->req.sol + txn->req.sl.rq.u;
588 end = ptr + txn->req.sl.rq.u_l;
589
590 if (ptr >= end)
591 return NULL;
592
593 /* RFC2616, par. 5.1.2 :
594 * Request-URI = "*" | absuri | abspath | authority
595 */
596
597 if (*ptr == '*')
598 return NULL;
599
600 if (isalpha((unsigned char)*ptr)) {
601 /* this is a scheme as described by RFC3986, par. 3.1 */
602 ptr++;
603 while (ptr < end &&
604 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
605 ptr++;
606 /* skip '://' */
607 if (ptr == end || *ptr++ != ':')
608 return NULL;
609 if (ptr == end || *ptr++ != '/')
610 return NULL;
611 if (ptr == end || *ptr++ != '/')
612 return NULL;
613 }
614 /* skip [user[:passwd]@]host[:[port]] */
615
616 while (ptr < end && *ptr != '/')
617 ptr++;
618
619 if (ptr == end)
620 return NULL;
621
622 /* OK, we got the '/' ! */
623 return ptr;
624}
625
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]626/* Returns a 302 for a redirectable request. This may only be called just after
627 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
628 * left unchanged and will follow normal proxy processing.
629 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]630void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]631{
632 struct http_txn *txn;
633 struct chunk rdr;
634 char *path;
635 int len;
636
637 /* 1: create the response header */
638 rdr.len = strlen(HTTP_302);
639 rdr.str = trash;
640 memcpy(rdr.str, HTTP_302, rdr.len);
641
642 /* 2: add the server's prefix */
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]643 if (rdr.len + s->srv->rdr_len > rdr.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]644 return;
645
646 memcpy(rdr.str + rdr.len, s->srv->rdr_pfx, s->srv->rdr_len);
647 rdr.len += s->srv->rdr_len;
648
649 /* 3: add the request URI */
650 txn = &s->txn;
651 path = http_get_path(txn);
652 if (!path)
653 return;
654
655 len = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]656 if (rdr.len + len > rdr.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]657 return;
658
659 memcpy(rdr.str + rdr.len, path, len);
660 rdr.len += len;
661 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
662 rdr.len += 4;
663
664 /* prepare to return without error. */
Willy Tarreau99126c32008-11-27 10:30:51 +0100[diff] [blame]665 si->shutr(si);
666 si->shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]667 si->err_type = SI_ET_NONE;
668 si->err_loc = NULL;
669 si->state = SI_ST_CLO;
670
671 /* send the message */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]672 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &rdr);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]673
674 /* FIXME: we should increase a counter of redirects per server and per backend. */
675 if (s->srv)
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]676 srv_inc_sess_ctr(s->srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]677}
678
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]679/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]680 * that the server side is closed. Note that err_type is actually a
681 * bitmask, where almost only aborts may be cumulated with other
682 * values. We consider that aborted operations are more important
683 * than timeouts or errors due to the fact that nobody else in the
684 * logs might explain incomplete retries. All others should avoid
685 * being cumulated. It should normally not be possible to have multiple
686 * aborts at once, but just in case, the first one in sequence is reported.
687 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]688void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]689{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]690 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]691
692 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]693 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
694 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]695 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]696 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
697 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]698 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]699 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
700 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]701 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]702 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
703 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]704 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]705 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
706 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]707 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]708 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
709 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]710 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]711 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
712 500, error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]713}
714
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]715extern const char sess_term_cond[8];
716extern const char sess_fin_state[8];
717extern const char *monthname[12];
718const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
719const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
720 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
721 unknown, Set-cookie Rewritten */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]722struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]723struct pool_head *pool2_capture;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]724
Emeric Brun3a058f32009-06-30 18:26:00 +0200[diff] [blame]725void http_sess_clflog(struct session *s)
726{
727 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
728 struct proxy *fe = s->fe;
729 struct proxy *be = s->be;
730 struct proxy *prx_log;
731 struct http_txn *txn = &s->txn;
732 int tolog, level, err;
733 char *uri, *h;
734 char *svid;
735 struct tm tm;
736 static char tmpline[MAX_SYSLOG_LEN];
737 int hdr;
738 size_t w;
739 int t_request;
740
741 prx_log = fe;
742 err = (s->flags & (SN_ERR_MASK | SN_REDISP)) ||
743 (s->conn_retries != be->conn_retries) ||
744 txn->status >= 500;
745
746 if (s->cli_addr.ss_family == AF_INET)
747 inet_ntop(AF_INET,
748 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
749 pn, sizeof(pn));
750 else
751 inet_ntop(AF_INET6,
752 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
753 pn, sizeof(pn));
754
755 get_gmtime(s->logs.accept_date.tv_sec, &tm);
756
757 /* FIXME: let's limit ourselves to frontend logging for now. */
758 tolog = fe->to_log;
759
760 h = tmpline;
761
762 w = snprintf(h, sizeof(tmpline),
763 "%s - - [%02d/%s/%04d:%02d:%02d:%02d +0000]",
764 pn,
765 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
766 tm.tm_hour, tm.tm_min, tm.tm_sec);
767 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
768 goto trunc;
769 h += w;
770
771 if (h >= tmpline + sizeof(tmpline) - 4)
772 goto trunc;
773
774 *(h++) = ' ';
775 *(h++) = '\"';
776 uri = txn->uri ? txn->uri : "<BADREQ>";
777 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
778 '#', url_encode_map, uri);
779 *(h++) = '\"';
780
781 w = snprintf(h, sizeof(tmpline) - (h - tmpline), " %d %lld", txn->status, s->logs.bytes_out);
782 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
783 goto trunc;
784 h += w;
785
786 if (h >= tmpline + sizeof(tmpline) - 9)
787 goto trunc;
788 memcpy(h, " \"-\" \"-\"", 8);
789 h += 8;
790
791 w = snprintf(h, sizeof(tmpline) - (h - tmpline),
792 " %d %03d",
793 (s->cli_addr.ss_family == AF_INET) ?
794 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
795 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
796 (int)s->logs.accept_date.tv_usec/1000);
797 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
798 goto trunc;
799 h += w;
800
801 w = strlen(fe->id);
802 if (h >= tmpline + sizeof(tmpline) - 4 - w)
803 goto trunc;
804 *(h++) = ' ';
805 *(h++) = '\"';
806 memcpy(h, fe->id, w);
807 h += w;
808 *(h++) = '\"';
809
810 w = strlen(be->id);
811 if (h >= tmpline + sizeof(tmpline) - 4 - w)
812 goto trunc;
813 *(h++) = ' ';
814 *(h++) = '\"';
815 memcpy(h, be->id, w);
816 h += w;
817 *(h++) = '\"';
818
819 svid = (tolog & LW_SVID) ?
820 (s->data_source != DATA_SRC_STATS) ?
821 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
822
823 w = strlen(svid);
824 if (h >= tmpline + sizeof(tmpline) - 4 - w)
825 goto trunc;
826 *(h++) = ' ';
827 *(h++) = '\"';
828 memcpy(h, svid, w);
829 h += w;
830 *(h++) = '\"';
831
832 t_request = -1;
833 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
834 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
835 w = snprintf(h, sizeof(tmpline) - (h - tmpline),
836 " %d %ld %ld %ld %ld",
837 t_request,
838 (s->logs.t_queue >= 0) ? s->logs.t_queue - t_request : -1,
839 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
840 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
841 s->logs.t_close);
842 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
843 goto trunc;
844 h += w;
845
846 if (h >= tmpline + sizeof(tmpline) - 8)
847 goto trunc;
848 *(h++) = ' ';
849 *(h++) = '\"';
850 *(h++) = sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT];
851 *(h++) = sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT];
852 *(h++) = (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
853 *(h++) = (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-';
854 *(h++) = '\"';
855
856 w = snprintf(h, sizeof(tmpline) - (h - tmpline),
857 " %d %d %d %d %d %ld %ld",
858 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
859 (s->conn_retries > 0) ? (be->conn_retries - s->conn_retries) : be->conn_retries,
860 s->logs.srv_queue_size, s->logs.prx_queue_size);
861
862 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
863 goto trunc;
864 h += w;
865
866 if (txn->cli_cookie) {
867 w = strlen(txn->cli_cookie);
868 if (h >= tmpline + sizeof(tmpline) - 4 - w)
869 goto trunc;
870 *(h++) = ' ';
871 *(h++) = '\"';
872 memcpy(h, txn->cli_cookie, w);
873 h += w;
874 *(h++) = '\"';
875 } else {
876 if (h >= tmpline + sizeof(tmpline) - 5)
877 goto trunc;
878 memcpy(h, " \"-\"", 4);
879 h += 4;
880 }
881
882 if (txn->srv_cookie) {
883 w = strlen(txn->srv_cookie);
884 if (h >= tmpline + sizeof(tmpline) - 4 - w)
885 goto trunc;
886 *(h++) = ' ';
887 *(h++) = '\"';
888 memcpy(h, txn->srv_cookie, w);
889 h += w;
890 *(h++) = '\"';
891 } else {
892 if (h >= tmpline + sizeof(tmpline) - 5)
893 goto trunc;
894 memcpy(h, " \"-\"", 4);
895 h += 4;
896 }
897
898 if ((fe->to_log & LW_REQHDR) && txn->req.cap) {
899 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
900 if (h >= sizeof (tmpline) + tmpline - 4)
901 goto trunc;
902 *(h++) = ' ';
903 *(h++) = '\"';
904 h = encode_string(h, tmpline + sizeof(tmpline) - 2,
905 '#', hdr_encode_map, txn->req.cap[hdr]);
906 *(h++) = '\"';
907 }
908 }
909
910 if ((fe->to_log & LW_RSPHDR) && txn->rsp.cap) {
911 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
912 if (h >= sizeof (tmpline) + tmpline - 4)
913 goto trunc;
914 *(h++) = ' ';
915 *(h++) = '\"';
916 h = encode_string(h, tmpline + sizeof(tmpline) - 2,
917 '#', hdr_encode_map, txn->rsp.cap[hdr]);
918 *(h++) = '\"';
919 }
920 }
921
922trunc:
923 *h = '\0';
924
925 level = LOG_INFO;
926 if (err && (fe->options2 & PR_O2_LOGERRORS))
927 level = LOG_ERR;
928
929 send_log(prx_log, level, "%s\n", tmpline);
930
931 s->logs.logwait = 0;
932}
933
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]934/*
935 * send a log for the session when we have enough info about it.
936 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]937 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]938void http_sess_log(struct session *s)
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]939{
940 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
941 struct proxy *fe = s->fe;
942 struct proxy *be = s->be;
943 struct proxy *prx_log;
944 struct http_txn *txn = &s->txn;
Willy Tarreauc9bd0cc2009-05-10 11:57:02 +0200[diff] [blame]945 int tolog, level, err;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]946 char *uri, *h;
947 char *svid;
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]948 struct tm tm;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]949 static char tmpline[MAX_SYSLOG_LEN];
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]950 int t_request;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]951 int hdr;
952
Willy Tarreauc9bd0cc2009-05-10 11:57:02 +0200[diff] [blame]953 /* if we don't want to log normal traffic, return now */
954 err = (s->flags & (SN_ERR_MASK | SN_REDISP)) ||
955 (s->conn_retries != be->conn_retries) ||
956 txn->status >= 500;
957 if (!err && (fe->options2 & PR_O2_NOLOGNORM))
958 return;
959
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]960 if (fe->logfac1 < 0 && fe->logfac2 < 0)
961 return;
962 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]963
Emeric Brun3a058f32009-06-30 18:26:00 +0200[diff] [blame]964 if (prx_log->options2 & PR_O2_CLFLOG)
965 return http_sess_clflog(s);
966
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]967 if (s->cli_addr.ss_family == AF_INET)
968 inet_ntop(AF_INET,
969 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
970 pn, sizeof(pn));
971 else
972 inet_ntop(AF_INET6,
973 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
974 pn, sizeof(pn));
975
Willy Tarreaub7f694f2008-06-22 17:18:02 +0200[diff] [blame]976 get_localtime(s->logs.accept_date.tv_sec, &tm);
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]977
978 /* FIXME: let's limit ourselves to frontend logging for now. */
979 tolog = fe->to_log;
980
981 h = tmpline;
982 if (fe->to_log & LW_REQHDR &&
983 txn->req.cap &&
984 (h < tmpline + sizeof(tmpline) - 10)) {
985 *(h++) = ' ';
986 *(h++) = '{';
987 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
988 if (hdr)
989 *(h++) = '|';
990 if (txn->req.cap[hdr] != NULL)
991 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
992 '#', hdr_encode_map, txn->req.cap[hdr]);
993 }
994 *(h++) = '}';
995 }
996
997 if (fe->to_log & LW_RSPHDR &&
998 txn->rsp.cap &&
999 (h < tmpline + sizeof(tmpline) - 7)) {
1000 *(h++) = ' ';
1001 *(h++) = '{';
1002 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
1003 if (hdr)
1004 *(h++) = '|';
1005 if (txn->rsp.cap[hdr] != NULL)
1006 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
1007 '#', hdr_encode_map, txn->rsp.cap[hdr]);
1008 }
1009 *(h++) = '}';
1010 }
1011
1012 if (h < tmpline + sizeof(tmpline) - 4) {
1013 *(h++) = ' ';
1014 *(h++) = '"';
1015 uri = txn->uri ? txn->uri : "<BADREQ>";
1016 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
1017 '#', url_encode_map, uri);
1018 *(h++) = '"';
1019 }
1020 *h = '\0';
1021
1022 svid = (tolog & LW_SVID) ?
1023 (s->data_source != DATA_SRC_STATS) ?
1024 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
1025
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]1026 t_request = -1;
1027 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
1028 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
1029
Willy Tarreauc9bd0cc2009-05-10 11:57:02 +0200[diff] [blame]1030 level = LOG_INFO;
1031 if (err && (fe->options2 & PR_O2_LOGERRORS))
1032 level = LOG_ERR;
1033
1034 send_log(prx_log, level,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1035 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
Willy Tarreau1772ece2009-04-03 14:49:12 +0200[diff] [blame]1036 " %s %s/%s %d/%ld/%ld/%ld/%s%ld %d %s%lld"
1037 " %s %s %c%c%c%c %d/%d/%d/%d/%s%u %ld/%ld%s\n",
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1038 pn,
1039 (s->cli_addr.ss_family == AF_INET) ?
1040 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
1041 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]1042 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
Willy Tarreau1772ece2009-04-03 14:49:12 +0200[diff] [blame]1043 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)s->logs.accept_date.tv_usec/1000,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1044 fe->id, be->id, svid,
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]1045 t_request,
1046 (s->logs.t_queue >= 0) ? s->logs.t_queue - t_request : -1,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1047 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
1048 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
1049 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
1050 txn->status,
Willy Tarreau8b3977f2008-01-18 11:16:32 +0100[diff] [blame]1051 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_out,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1052 txn->cli_cookie ? txn->cli_cookie : "-",
1053 txn->srv_cookie ? txn->srv_cookie : "-",
1054 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
1055 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
1056 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
1057 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
1058 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]1059 (s->flags & SN_REDISP)?"+":"",
1060 (s->conn_retries>0)?(be->conn_retries - s->conn_retries):be->conn_retries,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1061 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
1062
1063 s->logs.logwait = 0;
1064}
1065
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1066
1067/*
1068 * Capture headers from message starting at <som> according to header list
1069 * <cap_hdr>, and fill the <idx> structure appropriately.
1070 */
1071void capture_headers(char *som, struct hdr_idx *idx,
1072 char **cap, struct cap_hdr *cap_hdr)
1073{
1074 char *eol, *sol, *col, *sov;
1075 int cur_idx;
1076 struct cap_hdr *h;
1077 int len;
1078
1079 sol = som + hdr_idx_first_pos(idx);
1080 cur_idx = hdr_idx_first_idx(idx);
1081
1082 while (cur_idx) {
1083 eol = sol + idx->v[cur_idx].len;
1084
1085 col = sol;
1086 while (col < eol && *col != ':')
1087 col++;
1088
1089 sov = col + 1;
1090 while (sov < eol && http_is_lws[(unsigned char)*sov])
1091 sov++;
1092
1093 for (h = cap_hdr; h; h = h->next) {
1094 if ((h->namelen == col - sol) &&
1095 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1096 if (cap[h->index] == NULL)
1097 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1098 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1099
1100 if (cap[h->index] == NULL) {
1101 Alert("HTTP capture : out of memory.\n");
1102 continue;
1103 }
1104
1105 len = eol - sov;
1106 if (len > h->len)
1107 len = h->len;
1108
1109 memcpy(cap[h->index], sov, len);
1110 cap[h->index][len]=0;
1111 }
1112 }
1113 sol = eol + idx->v[cur_idx].cr + 1;
1114 cur_idx = idx->v[cur_idx].next;
1115 }
1116}
1117
1118
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1119/* either we find an LF at <ptr> or we jump to <bad>.
1120 */
1121#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1122
1123/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1124 * otherwise to <http_msg_ood> with <state> set to <st>.
1125 */
1126#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1127 ptr++; \
1128 if (likely(ptr < end)) \
1129 goto good; \
1130 else { \
1131 state = (st); \
1132 goto http_msg_ood; \
1133 } \
1134 } while (0)
1135
1136
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1137/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1138 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1139 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1140 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1141 * will give undefined results.
1142 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1143 * and that msg->sol points to the beginning of the response.
1144 * If a complete line is found (which implies that at least one CR or LF is
1145 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1146 * returned indicating an incomplete line (which does not mean that parts have
1147 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1148 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1149 * upon next call.
1150 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1151 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1152 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1153 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1154 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1155 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1156const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf,
1157 unsigned int state, const char *ptr, const char *end,
1158 char **ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1159{
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1160 switch (state) {
1161 http_msg_rpver:
1162 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1163 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1164 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1165
1166 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1167 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1168 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1169 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1170 state = HTTP_MSG_ERROR;
1171 break;
1172
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1173 http_msg_rpver_sp:
1174 case HTTP_MSG_RPVER_SP:
1175 if (likely(!HTTP_IS_LWS(*ptr))) {
1176 msg->sl.st.c = ptr - msg_buf;
1177 goto http_msg_rpcode;
1178 }
1179 if (likely(HTTP_IS_SPHT(*ptr)))
1180 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1181 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1182 state = HTTP_MSG_ERROR;
1183 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1184
1185 http_msg_rpcode:
1186 case HTTP_MSG_RPCODE:
1187 if (likely(!HTTP_IS_LWS(*ptr)))
1188 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1189
1190 if (likely(HTTP_IS_SPHT(*ptr))) {
1191 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
1192 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1193 }
1194
1195 /* so it's a CR/LF, so there is no reason phrase */
1196 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
1197 http_msg_rsp_reason:
1198 /* FIXME: should we support HTTP responses without any reason phrase ? */
1199 msg->sl.st.r = ptr - msg_buf;
1200 msg->sl.st.r_l = 0;
1201 goto http_msg_rpline_eol;
1202
1203 http_msg_rpcode_sp:
1204 case HTTP_MSG_RPCODE_SP:
1205 if (likely(!HTTP_IS_LWS(*ptr))) {
1206 msg->sl.st.r = ptr - msg_buf;
1207 goto http_msg_rpreason;
1208 }
1209 if (likely(HTTP_IS_SPHT(*ptr)))
1210 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1211 /* so it's a CR/LF, so there is no reason phrase */
1212 goto http_msg_rsp_reason;
1213
1214 http_msg_rpreason:
1215 case HTTP_MSG_RPREASON:
1216 if (likely(!HTTP_IS_CRLF(*ptr)))
1217 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
1218 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
1219 http_msg_rpline_eol:
1220 /* We have seen the end of line. Note that we do not
1221 * necessarily have the \n yet, but at least we know that we
1222 * have EITHER \r OR \n, otherwise the response would not be
1223 * complete. We can then record the response length and return
1224 * to the caller which will be able to register it.
1225 */
1226 msg->sl.st.l = ptr - msg->sol;
1227 return ptr;
1228
1229#ifdef DEBUG_FULL
1230 default:
1231 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1232 exit(1);
1233#endif
1234 }
1235
1236 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1237 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1238 if (ret_state)
1239 *ret_state = state;
1240 if (ret_ptr)
1241 *ret_ptr = (char *)ptr;
1242 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1243}
1244
1245
1246/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1247 * This function parses a request line between <ptr> and <end>, starting with
1248 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1249 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1250 * will give undefined results.
1251 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1252 * and that msg->sol points to the beginning of the request.
1253 * If a complete line is found (which implies that at least one CR or LF is
1254 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1255 * returned indicating an incomplete line (which does not mean that parts have
1256 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1257 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1258 * upon next call.
1259 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1260 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1261 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1262 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1263 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1264 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1265const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf,
1266 unsigned int state, const char *ptr, const char *end,
1267 char **ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1268{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1269 switch (state) {
1270 http_msg_rqmeth:
1271 case HTTP_MSG_RQMETH:
1272 if (likely(HTTP_IS_TOKEN(*ptr)))
1273 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1274
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1275 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1276 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1277 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1278 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1279
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1280 if (likely(HTTP_IS_CRLF(*ptr))) {
1281 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1282 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1283 http_msg_req09_uri:
1284 msg->sl.rq.u = ptr - msg_buf;
1285 http_msg_req09_uri_e:
1286 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1287 http_msg_req09_ver:
1288 msg->sl.rq.v = ptr - msg_buf;
1289 msg->sl.rq.v_l = 0;
1290 goto http_msg_rqline_eol;
1291 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1292 state = HTTP_MSG_ERROR;
1293 break;
1294
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1295 http_msg_rqmeth_sp:
1296 case HTTP_MSG_RQMETH_SP:
1297 if (likely(!HTTP_IS_LWS(*ptr))) {
1298 msg->sl.rq.u = ptr - msg_buf;
1299 goto http_msg_rquri;
1300 }
1301 if (likely(HTTP_IS_SPHT(*ptr)))
1302 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1303 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1304 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1305
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1306 http_msg_rquri:
1307 case HTTP_MSG_RQURI:
1308 if (likely(!HTTP_IS_LWS(*ptr)))
1309 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1310
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1311 if (likely(HTTP_IS_SPHT(*ptr))) {
1312 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1313 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1314 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1315
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1316 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1317 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1318
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1319 http_msg_rquri_sp:
1320 case HTTP_MSG_RQURI_SP:
1321 if (likely(!HTTP_IS_LWS(*ptr))) {
1322 msg->sl.rq.v = ptr - msg_buf;
1323 goto http_msg_rqver;
1324 }
1325 if (likely(HTTP_IS_SPHT(*ptr)))
1326 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1327 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1328 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1329
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1330 http_msg_rqver:
1331 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1332 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1333 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1334
1335 if (likely(HTTP_IS_CRLF(*ptr))) {
1336 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1337 http_msg_rqline_eol:
1338 /* We have seen the end of line. Note that we do not
1339 * necessarily have the \n yet, but at least we know that we
1340 * have EITHER \r OR \n, otherwise the request would not be
1341 * complete. We can then record the request length and return
1342 * to the caller which will be able to register it.
1343 */
1344 msg->sl.rq.l = ptr - msg->sol;
1345 return ptr;
1346 }
1347
1348 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1349 state = HTTP_MSG_ERROR;
1350 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1351
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1352#ifdef DEBUG_FULL
1353 default:
1354 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1355 exit(1);
1356#endif
1357 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1358
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1359 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1360 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1361 if (ret_state)
1362 *ret_state = state;
1363 if (ret_ptr)
1364 *ret_ptr = (char *)ptr;
1365 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1366}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1367
1368
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1369/*
1370 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1371 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1372 * when data are missing and recalled at the exact same location with no
1373 * information loss. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1374 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
1375 * fields.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1376 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1377void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1378{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1379 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1380 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1381
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1382 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1383 ptr = buf->lr;
1384 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1385
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1386 if (unlikely(ptr >= end))
1387 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1388
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1389 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1390 /*
1391 * First, states that are specific to the response only.
1392 * We check them first so that request and headers are
1393 * closer to each other (accessed more often).
1394 */
1395 http_msg_rpbefore:
1396 case HTTP_MSG_RPBEFORE:
1397 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]1398#if !defined(PARSE_PRESERVE_EMPTY_LINES)
1399 if (likely(ptr != buf->data)) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1400 /* Remove empty leading lines, as recommended by
1401 * RFC2616. This takes a lot of time because we
1402 * must move all the buffer backwards, but this
1403 * is rarely needed. The method above will be
1404 * cleaner when we'll be able to start sending
1405 * the request from any place in the buffer.
1406 */
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]1407 ptr += buffer_replace2(buf, buf->lr, ptr, NULL, 0);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1408 end = buf->r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1409 }
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]1410#endif
1411 msg->sol = ptr;
1412 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1413 hdr_idx_init(idx);
1414 state = HTTP_MSG_RPVER;
1415 goto http_msg_rpver;
1416 }
1417
1418 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1419 goto http_msg_invalid;
1420
1421 if (unlikely(*ptr == '\n'))
1422 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1423 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1424 /* stop here */
1425
1426 http_msg_rpbefore_cr:
1427 case HTTP_MSG_RPBEFORE_CR:
1428 EXPECT_LF_HERE(ptr, http_msg_invalid);
1429 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1430 /* stop here */
1431
1432 http_msg_rpver:
1433 case HTTP_MSG_RPVER:
1434 case HTTP_MSG_RPVER_SP:
1435 case HTTP_MSG_RPCODE:
1436 case HTTP_MSG_RPCODE_SP:
1437 case HTTP_MSG_RPREASON:
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1438 ptr = (char *)http_parse_stsline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1439 &buf->lr, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1440 if (unlikely(!ptr))
1441 return;
1442
1443 /* we have a full response and we know that we have either a CR
1444 * or an LF at <ptr>.
1445 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1446 //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]1447 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1448
1449 msg->sol = ptr;
1450 if (likely(*ptr == '\r'))
1451 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1452 goto http_msg_rpline_end;
1453
1454 http_msg_rpline_end:
1455 case HTTP_MSG_RPLINE_END:
1456 /* msg->sol must point to the first of CR or LF. */
1457 EXPECT_LF_HERE(ptr, http_msg_invalid);
1458 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1459 /* stop here */
1460
1461 /*
1462 * Second, states that are specific to the request only
1463 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1464 http_msg_rqbefore:
1465 case HTTP_MSG_RQBEFORE:
1466 if (likely(HTTP_IS_TOKEN(*ptr))) {
1467 if (likely(ptr == buf->data)) {
1468 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1469 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1470 } else {
1471#if PARSE_PRESERVE_EMPTY_LINES
1472 /* only skip empty leading lines, don't remove them */
1473 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1474 msg->som = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1475#else
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1476 /* Remove empty leading lines, as recommended by
1477 * RFC2616. This takes a lot of time because we
1478 * must move all the buffer backwards, but this
1479 * is rarely needed. The method above will be
1480 * cleaner when we'll be able to start sending
1481 * the request from any place in the buffer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1482 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1483 buf->lr = ptr;
1484 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1485 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1486 msg->sol = buf->data;
1487 ptr = buf->data;
1488 end = buf->r;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1489#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1490 }
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1491 /* we will need this when keep-alive will be supported
1492 hdr_idx_init(idx);
1493 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1494 state = HTTP_MSG_RQMETH;
1495 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1496 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1497
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1498 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1499 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1500
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1501 if (unlikely(*ptr == '\n'))
1502 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1503 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1504 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1505
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1506 http_msg_rqbefore_cr:
1507 case HTTP_MSG_RQBEFORE_CR:
1508 EXPECT_LF_HERE(ptr, http_msg_invalid);
1509 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1510 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1511
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1512 http_msg_rqmeth:
1513 case HTTP_MSG_RQMETH:
1514 case HTTP_MSG_RQMETH_SP:
1515 case HTTP_MSG_RQURI:
1516 case HTTP_MSG_RQURI_SP:
1517 case HTTP_MSG_RQVER:
1518 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1519 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1520 if (unlikely(!ptr))
1521 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1522
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1523 /* we have a full request and we know that we have either a CR
1524 * or an LF at <ptr>.
1525 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1526 //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]1527 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1528
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1529 msg->sol = ptr;
1530 if (likely(*ptr == '\r'))
1531 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1532 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1533
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1534 http_msg_rqline_end:
1535 case HTTP_MSG_RQLINE_END:
1536 /* check for HTTP/0.9 request : no version information available.
1537 * msg->sol must point to the first of CR or LF.
1538 */
1539 if (unlikely(msg->sl.rq.v_l == 0))
1540 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1541
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1542 EXPECT_LF_HERE(ptr, http_msg_invalid);
1543 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1544 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1545
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1546 /*
1547 * Common states below
1548 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1549 http_msg_hdr_first:
1550 case HTTP_MSG_HDR_FIRST:
1551 msg->sol = ptr;
1552 if (likely(!HTTP_IS_CRLF(*ptr))) {
1553 goto http_msg_hdr_name;
1554 }
1555
1556 if (likely(*ptr == '\r'))
1557 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1558 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1559
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1560 http_msg_hdr_name:
1561 case HTTP_MSG_HDR_NAME:
1562 /* assumes msg->sol points to the first char */
1563 if (likely(HTTP_IS_TOKEN(*ptr)))
1564 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1565
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1566 if (likely(*ptr == ':')) {
1567 msg->col = ptr - buf->data;
1568 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1569 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1570
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1571 if (likely(msg->err_pos < -1) || *ptr == '\n')
1572 goto http_msg_invalid;
1573
1574 if (msg->err_pos == -1) /* capture error pointer */
1575 msg->err_pos = ptr - buf->data; /* >= 0 now */
1576
1577 /* and we still accept this non-token character */
1578 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1579
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1580 http_msg_hdr_l1_sp:
1581 case HTTP_MSG_HDR_L1_SP:
1582 /* assumes msg->sol points to the first char and msg->col to the colon */
1583 if (likely(HTTP_IS_SPHT(*ptr)))
1584 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]1585
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1586 /* header value can be basically anything except CR/LF */
1587 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1588
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1589 if (likely(!HTTP_IS_CRLF(*ptr))) {
1590 goto http_msg_hdr_val;
1591 }
1592
1593 if (likely(*ptr == '\r'))
1594 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1595 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1596
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1597 http_msg_hdr_l1_lf:
1598 case HTTP_MSG_HDR_L1_LF:
1599 EXPECT_LF_HERE(ptr, http_msg_invalid);
1600 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]1601
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1602 http_msg_hdr_l1_lws:
1603 case HTTP_MSG_HDR_L1_LWS:
1604 if (likely(HTTP_IS_SPHT(*ptr))) {
1605 /* replace HT,CR,LF with spaces */
1606 for (; buf->data+msg->sov < ptr; msg->sov++)
1607 buf->data[msg->sov] = ' ';
1608 goto http_msg_hdr_l1_sp;
1609 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1610 /* we had a header consisting only in spaces ! */
1611 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1612 goto http_msg_complete_header;
1613
1614 http_msg_hdr_val:
1615 case HTTP_MSG_HDR_VAL:
1616 /* assumes msg->sol points to the first char, msg->col to the
1617 * colon, and msg->sov points to the first character of the
1618 * value.
1619 */
1620 if (likely(!HTTP_IS_CRLF(*ptr)))
1621 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1622
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1623 msg->eol = ptr;
1624 /* Note: we could also copy eol into ->eoh so that we have the
1625 * real header end in case it ends with lots of LWS, but is this
1626 * really needed ?
1627 */
1628 if (likely(*ptr == '\r'))
1629 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1630 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1631
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1632 http_msg_hdr_l2_lf:
1633 case HTTP_MSG_HDR_L2_LF:
1634 EXPECT_LF_HERE(ptr, http_msg_invalid);
1635 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]1636
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1637 http_msg_hdr_l2_lws:
1638 case HTTP_MSG_HDR_L2_LWS:
1639 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1640 /* LWS: replace HT,CR,LF with spaces */
1641 for (; msg->eol < ptr; msg->eol++)
1642 *msg->eol = ' ';
1643 goto http_msg_hdr_val;
1644 }
1645 http_msg_complete_header:
1646 /*
1647 * It was a new header, so the last one is finished.
1648 * Assumes msg->sol points to the first char, msg->col to the
1649 * colon, msg->sov points to the first character of the value
1650 * and msg->eol to the first CR or LF so we know how the line
1651 * ends. We insert last header into the index.
1652 */
1653 /*
1654 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1655 write(2, msg->sol, msg->eol-msg->sol);
1656 fprintf(stderr,"\n");
1657 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1658
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1659 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1660 idx, idx->tail) < 0))
1661 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1662
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1663 msg->sol = ptr;
1664 if (likely(!HTTP_IS_CRLF(*ptr))) {
1665 goto http_msg_hdr_name;
1666 }
1667
1668 if (likely(*ptr == '\r'))
1669 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1670 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1671
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1672 http_msg_last_lf:
1673 case HTTP_MSG_LAST_LF:
1674 /* Assumes msg->sol points to the first of either CR or LF */
1675 EXPECT_LF_HERE(ptr, http_msg_invalid);
1676 ptr++;
1677 buf->lr = ptr;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1678 msg->col = msg->sov = buf->lr - buf->data;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1679 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1680 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1681 return;
1682#ifdef DEBUG_FULL
1683 default:
1684 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1685 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1686#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1687 }
1688 http_msg_ood:
1689 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1690 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1691 buf->lr = ptr;
1692 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1693
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1694 http_msg_invalid:
1695 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1696 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1697 buf->lr = ptr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1698 return;
1699}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1700
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1701/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1702 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1703 * nothing is done and 1 is returned.
1704 */
1705static int http_upgrade_v09_to_v10(struct buffer *req, struct http_msg *msg, struct http_txn *txn)
1706{
1707 int delta;
1708 char *cur_end;
1709
1710 if (msg->sl.rq.v_l != 0)
1711 return 1;
1712
1713 msg->sol = req->data + msg->som;
1714 cur_end = msg->sol + msg->sl.rq.l;
1715 delta = 0;
1716
1717 if (msg->sl.rq.u_l == 0) {
1718 /* if no URI was set, add "/" */
1719 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
1720 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1721 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1722 }
1723 /* add HTTP version */
1724 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1725 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1726 cur_end += delta;
1727 cur_end = (char *)http_parse_reqline(msg, req->data,
1728 HTTP_MSG_RQMETH,
1729 msg->sol, cur_end + 1,
1730 NULL, NULL);
1731 if (unlikely(!cur_end))
1732 return 0;
1733
1734 /* we have a full HTTP/1.0 request now and we know that
1735 * we have either a CR or an LF at <ptr>.
1736 */
1737 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1738 return 1;
1739}
1740
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1741/* This stream analyser waits for a complete HTTP request. It returns 1 if the
1742 * processing can continue on next analysers, or zero if it either needs more
1743 * data or wants to immediately abort the request (eg: timeout, error, ...). It
1744 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
1745 * when it has nothing left to do, and may remove any analyser when it wants to
1746 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1747 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]1748int http_wait_for_request(struct session *s, struct buffer *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1749{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1750 /*
1751 * We will parse the partial (or complete) lines.
1752 * We will check the request syntax, and also join multi-line
1753 * headers. An index of all the lines will be elaborated while
1754 * parsing.
1755 *
1756 * For the parsing, we use a 28 states FSM.
1757 *
1758 * Here is the information we currently have :
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]1759 * req->data + msg->som = beginning of request
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1760 * req->data + req->eoh = end of processed headers / start of current one
1761 * req->data + req->eol = end of current header or line (LF or CRLF)
1762 * req->lr = first non-visited byte
1763 * req->r = end of data
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1764 *
1765 * At end of parsing, we may perform a capture of the error (if any), and
1766 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
1767 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
1768 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1769 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1770
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1771 int cur_idx;
1772 struct http_txn *txn = &s->txn;
1773 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]1774 struct hdr_ctx ctx;
1775 int conn_ka, conn_cl;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1776
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]1777 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
1778 now_ms, __FUNCTION__,
1779 s,
1780 req,
1781 req->rex, req->wex,
1782 req->flags,
1783 req->l,
1784 req->analysers);
1785
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]1786 /* we're speaking HTTP here, so let's speak HTTP to the client */
1787 s->srv_error = http_return_srv_error;
1788
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1789 if (likely(req->lr < req->r))
1790 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1791
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1792 /* 1: we might have to print this header in debug mode */
1793 if (unlikely((global.mode & MODE_DEBUG) &&
1794 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]1795 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1796 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1797
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1798 sol = req->data + msg->som;
1799 eol = sol + msg->sl.rq.l;
1800 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1801
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1802 sol += hdr_idx_first_pos(&txn->hdr_idx);
1803 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1804
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1805 while (cur_idx) {
1806 eol = sol + txn->hdr_idx.v[cur_idx].len;
1807 debug_hdr("clihdr", s, sol, eol);
1808 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1809 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1810 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1811 }
1812
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1813
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1814 /*
1815 * Now we quickly check if we have found a full valid request.
1816 * If not so, we check the FD and buffer states before leaving.
1817 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]1818 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1819 * requests are checked first.
1820 *
1821 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1822
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]1823 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1824 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1825 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1826 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1827 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
1828 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1829
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1830 /* 1: Since we are in header mode, if there's no space
1831 * left for headers, we won't be able to free more
1832 * later, so the session will never terminate. We
1833 * must terminate it now.
1834 */
1835 if (unlikely(req->flags & BF_FULL)) {
1836 /* FIXME: check if URI is set and return Status
1837 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1838 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1839 goto return_bad_req;
1840 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1841
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1842 /* 2: have we encountered a read error ? */
1843 else if (req->flags & BF_READ_ERROR) {
1844 /* we cannot return any message on error */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1845 if (msg->err_pos >= 0)
1846 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1847 msg->msg_state = HTTP_MSG_ERROR;
1848 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1849
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]1850 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1851 if (s->listener->counters)
1852 s->listener->counters->failed_req++;
1853
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1854 if (!(s->flags & SN_ERR_MASK))
1855 s->flags |= SN_ERR_CLICL;
1856 if (!(s->flags & SN_FINST_MASK))
1857 s->flags |= SN_FINST_R;
1858 return 0;
1859 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1860
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1861 /* 3: has the read timeout expired ? */
1862 else if (req->flags & BF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
1863 /* read timeout : give up with an error message. */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1864 if (msg->err_pos >= 0)
1865 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1866 txn->status = 408;
1867 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_408));
1868 msg->msg_state = HTTP_MSG_ERROR;
1869 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1870
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]1871 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1872 if (s->listener->counters)
1873 s->listener->counters->failed_req++;
1874
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1875 if (!(s->flags & SN_ERR_MASK))
1876 s->flags |= SN_ERR_CLITO;
1877 if (!(s->flags & SN_FINST_MASK))
1878 s->flags |= SN_FINST_R;
1879 return 0;
1880 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1881
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1882 /* 4: have we encountered a close ? */
1883 else if (req->flags & BF_SHUTR) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1884 if (msg->err_pos >= 0)
1885 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1886 txn->status = 400;
1887 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
1888 msg->msg_state = HTTP_MSG_ERROR;
1889 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1890
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]1891 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1892 if (s->listener->counters)
1893 s->listener->counters->failed_req++;
1894
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1895 if (!(s->flags & SN_ERR_MASK))
1896 s->flags |= SN_ERR_CLICL;
1897 if (!(s->flags & SN_FINST_MASK))
1898 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1899 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1900 }
1901
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]1902 buffer_dont_connect(req);
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]1903 req->flags |= BF_READ_DONTWAIT; /* try to get back here ASAP */
1904
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1905 /* just set the request timeout once at the beginning of the request */
1906 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]1907 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1908
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1909 /* we're not ready yet */
1910 return 0;
1911 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1912
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1913 /* OK now we have a complete HTTP request with indexed headers. Let's
1914 * complete the request parsing by setting a few fields we will need
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1915 * later. At this point, we have the last CRLF at req->data + msg->eoh.
1916 * If the request is in HTTP/0.9 form, the rule is still true, and eoh
1917 * points to the CRLF of the request line. req->lr points to the first
1918 * byte after the last LF. msg->col and msg->sov point to the first
1919 * byte of data. msg->eol cannot be trusted because it may have been
1920 * left uninitialized (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1921 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1922
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1923 /* Maybe we found in invalid header name while we were configured not
1924 * to block on that, so we have to capture it now.
1925 */
1926 if (unlikely(msg->err_pos >= 0))
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1927 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
1928
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1929 /* ensure we keep this pointer to the beginning of the message */
1930 msg->sol = req->data + msg->som;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1931
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1932 /*
1933 * 1: identify the method
1934 */
1935 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
1936
1937 /* we can make use of server redirect on GET and HEAD */
1938 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
1939 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]1940
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1941 /*
1942 * 2: check if the URI matches the monitor_uri.
1943 * We have to do this for every request which gets in, because
1944 * the monitor-uri is defined by the frontend.
1945 */
1946 if (unlikely((s->fe->monitor_uri_len != 0) &&
1947 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1948 !memcmp(&req->data[msg->sl.rq.u],
1949 s->fe->monitor_uri,
1950 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1951 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1952 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1953 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1954 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1955
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1956 s->flags |= SN_MONITOR;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1957
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1958 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1959 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
1960 int ret = acl_exec_cond(cond, s->fe, s, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1961
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1962 ret = acl_pass(ret);
1963 if (cond->pol == ACL_COND_UNLESS)
1964 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1965
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1966 if (ret) {
1967 /* we fail this request, let's return 503 service unavail */
1968 txn->status = 503;
1969 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_503));
1970 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1971 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1972 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]1973
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1974 /* nothing to fail, let's reply normaly */
1975 txn->status = 200;
1976 stream_int_retnclose(req->prod, &http_200_chunk);
1977 goto return_prx_cond;
1978 }
1979
1980 /*
1981 * 3: Maybe we have to copy the original REQURI for the logs ?
1982 * Note: we cannot log anymore if the request has been
1983 * classified as invalid.
1984 */
1985 if (unlikely(s->logs.logwait & LW_REQ)) {
1986 /* we have a complete HTTP request that we must log */
1987 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
1988 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1989
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1990 if (urilen >= REQURI_LEN)
1991 urilen = REQURI_LEN - 1;
1992 memcpy(txn->uri, &req->data[msg->som], urilen);
1993 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1994
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1995 if (!(s->logs.logwait &= ~LW_REQ))
1996 s->do_log(s);
1997 } else {
1998 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1999 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2000 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2001
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2002 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2003 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(req, msg, txn))
2004 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2005
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2006 /* 5: we may need to capture headers */
2007 if (unlikely((s->logs.logwait & LW_REQHDR) && s->fe->req_cap))
2008 capture_headers(req->data + msg->som, &txn->hdr_idx,
2009 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2010
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2011 /* 6: determine if we have a transfer-encoding or content-length.
2012 * RFC2616 #4.4 states that :
2013 * - If a Transfer-Encoding header field is present and has any value
2014 * other than "identity", then the transfer-length is defined by use
2015 * of the "chunked" transfer-coding ;
2016 *
2017 * - If a Content-Length header field is present, its decimal value in
2018 * OCTETs represents both the entity-length and the transfer-length.
2019 * If a message is received with both a Transfer-Encoding header
2020 * field and a Content-Length header field, the latter MUST be ignored.
2021 *
2022 * - If a request contains a message-body and a Content-Length is not
2023 * given, the server SHOULD respond with 400 (bad request) if it
2024 * cannot determine the length of the message, or with 411 (length
2025 * required) if it wishes to insist on receiving a valid Content-Length.
2026 */
2027
2028 /* FIXME: chunked encoding is HTTP/1.1 only */
2029 ctx.idx = 0;
2030 while (http_find_header2("Transfer-Encoding", 17, msg->sol, &txn->hdr_idx, &ctx)) {
2031 if (ctx.vlen == 8 && strncasecmp(ctx.line + ctx.val, "identity", 8) == 0)
2032 continue;
2033 txn->flags |= TX_REQ_TE_CHNK;
2034 break;
2035 }
2036
2037 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
2038 ctx.idx = 0;
2039 while (!(txn->flags & TX_REQ_TE_CHNK) &&
2040 http_find_header2("Content-Length", 14, msg->sol, &txn->hdr_idx, &ctx)) {
2041 signed long long cl;
2042
2043 if (!ctx.vlen)
2044 goto return_bad_req;
2045
2046 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl))
2047 goto return_bad_req; /* parse failure */
2048
2049 if (cl < 0)
2050 goto return_bad_req;
2051
2052 if ((txn->flags & TX_REQ_CNT_LEN) && (msg->hdr_content_len != cl))
2053 goto return_bad_req; /* already specified, was different */
2054
2055 txn->flags |= TX_REQ_CNT_LEN;
2056 msg->hdr_content_len = cl;
2057 }
2058
2059 /* Determine if the client wishes keep-alive or close.
2060 * RFC2616 #8.1.2 and #14.10 state that HTTP/1.1 and above connections
2061 * are persistent unless "Connection: close" is explicitly specified.
2062 * RFC2616 #19.6.2 refers to RFC2068 for HTTP/1.0 persistent connections.
2063 * RFC2068 #19.7.1 states that HTTP/1.0 clients are not persistent unless
2064 * they explicitly specify "Connection: keep-alive", regardless of any
2065 * optional "keep-alive" header.
2066 */
2067
2068 /* FIXME: should we also remove any header specified in "connection" ? */
2069 conn_ka = conn_cl = 0;
2070 ctx.idx = 0;
2071 while (http_find_header2("Connection", 10, msg->sol, &txn->hdr_idx, &ctx)) {
2072 if (ctx.vlen == 5 && strncasecmp(ctx.line + ctx.val, "close", 5) == 0)
2073 conn_cl = 1;
2074 else if (ctx.vlen == 10 && strncasecmp(ctx.line + ctx.val, "keep-alive", 10) == 0)
2075 conn_ka = 1;
2076 }
2077
Willy Tarreau75a5fef2009-10-18 23:43:57 +0200[diff] [blame]2078 /* prepare flags for this transaction */
2079 txn->flags |= (TX_CLI_CONN_KA | TX_SRV_CONN_KA);
2080 txn->flags |= (TX_CLI_CONN_KA | TX_SRV_CONN_KA);
2081
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2082 if ((msg->sl.rq.v_l == 8) &&
2083 (req->data[msg->som + msg->sl.rq.v + 5] == '1') &&
2084 (req->data[msg->som + msg->sl.rq.v + 7] == '0')) {
2085 /* HTTP/1.0 */
Willy Tarreau75a5fef2009-10-18 23:43:57 +0200[diff] [blame]2086 if (!conn_ka)
2087 txn->flags &= ~(TX_CLI_CONN_KA | TX_SRV_CONN_KA);
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2088 } else {
Willy Tarreau75a5fef2009-10-18 23:43:57 +0200[diff] [blame]2089 /* HTTP/1.1 */
2090 if (conn_cl)
2091 txn->flags &= ~(TX_CLI_CONN_KA | TX_SRV_CONN_KA);
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2092 }
2093
2094 /* we can mark the connection as non-persistent if needed */
2095 if (!(txn->flags & TX_SRV_CONN_KA))
2096 s->flags |= SN_CONN_CLOSED;
2097
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2098 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2099 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2100 req->analyse_exp = TICK_ETERNITY;
2101 return 1;
2102
2103 return_bad_req:
2104 /* We centralize bad requests processing here */
2105 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2106 /* we detected a parsing error. We want to archive this request
2107 * in the dedicated proxy area for later troubleshooting.
2108 */
2109 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
2110 }
2111
2112 txn->req.msg_state = HTTP_MSG_ERROR;
2113 txn->status = 400;
2114 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2115
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2116 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2117 if (s->listener->counters)
2118 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2119
2120 return_prx_cond:
2121 if (!(s->flags & SN_ERR_MASK))
2122 s->flags |= SN_ERR_PRXCOND;
2123 if (!(s->flags & SN_FINST_MASK))
2124 s->flags |= SN_FINST_R;
2125
2126 req->analysers = 0;
2127 req->analyse_exp = TICK_ETERNITY;
2128 return 0;
2129}
2130
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2131/* This stream analyser runs all HTTP request processing which is common to
2132 * frontends and backends, which means blocking ACLs, filters, connection-close,
2133 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2134 * It returns 1 if the processing can continue on next analysers, or zero if it
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2135 * either needs more data or wants to immediately abort the request (eg: deny,
2136 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2137 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2138int http_process_req_common(struct session *s, struct buffer *req, int an_bit, struct proxy *px)
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2139{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2140 struct http_txn *txn = &s->txn;
2141 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2142 struct acl_cond *cond;
2143 struct redirect_rule *rule;
2144 int cur_idx;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2145
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2146 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2147 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2148 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2149 return 0;
2150 }
2151
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2152 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2153 req->analyse_exp = TICK_ETERNITY;
2154
2155 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
2156 now_ms, __FUNCTION__,
2157 s,
2158 req,
2159 req->rex, req->wex,
2160 req->flags,
2161 req->l,
2162 req->analysers);
2163
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2164 /* first check whether we have some ACLs set to block this request */
2165 list_for_each_entry(cond, &px->block_cond, list) {
2166 int ret = acl_exec_cond(cond, px, s, txn, ACL_DIR_REQ);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]2167
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2168 ret = acl_pass(ret);
2169 if (cond->pol == ACL_COND_UNLESS)
2170 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2171
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2172 if (ret) {
2173 txn->status = 403;
2174 /* let's log the request time */
2175 s->logs.tv_request = now;
2176 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
2177 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2178 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2179 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2180
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2181 /* try headers filters */
2182 if (px->req_exp != NULL) {
2183 if (apply_filters_to_request(s, req, px->req_exp) < 0)
2184 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2185
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2186 /* has the request been denied ? */
2187 if (txn->flags & TX_CLDENY) {
2188 /* no need to go further */
2189 txn->status = 403;
2190 /* let's log the request time */
2191 s->logs.tv_request = now;
2192 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
2193 goto return_prx_cond;
2194 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2195
2196 /* When a connection is tarpitted, we use the tarpit timeout,
2197 * which may be the same as the connect timeout if unspecified.
2198 * If unset, then set it to zero because we really want it to
2199 * eventually expire. We build the tarpit as an analyser.
2200 */
2201 if (txn->flags & TX_CLTARPIT) {
2202 buffer_erase(s->req);
2203 /* wipe the request out so that we can drop the connection early
2204 * if the client closes first.
2205 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2206 buffer_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2207 req->analysers = 0; /* remove switching rules etc... */
2208 req->analysers |= AN_REQ_HTTP_TARPIT;
2209 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
2210 if (!req->analyse_exp)
2211 req->analyse_exp = tick_add(now_ms, 0);
2212 return 1;
2213 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2214 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2215
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2216 /* We might have to check for "Connection:". The test for persistent
2217 * connections has already been performed, so we only enter here if
2218 * we are certain the connection is persistent.
2219 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2220 if (((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
2221 !(s->flags & SN_CONN_CLOSED)) {
2222 char *cur_ptr, *cur_end, *cur_next;
2223 int old_idx, delta, val;
2224 struct hdr_idx_elem *cur_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2225
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2226 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
2227 old_idx = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2228
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2229 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2230 cur_hdr = &txn->hdr_idx.v[cur_idx];
2231 cur_ptr = cur_next;
2232 cur_end = cur_ptr + cur_hdr->len;
2233 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2234
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2235 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2236 if (val) {
2237 /* 3 possibilities :
2238 * - we have already set Connection: close,
2239 * so we remove this line.
2240 * - we have not yet set Connection: close,
2241 * but this line indicates close. We leave
2242 * it untouched and set the flag.
2243 * - we have not yet set Connection: close,
2244 * and this line indicates non-close. We
2245 * replace it.
2246 */
2247 if (s->flags & SN_CONN_CLOSED) {
2248 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2249 http_msg_move_end(&txn->req, delta);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2250 cur_next += delta;
2251 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2252 txn->hdr_idx.used--;
2253 cur_hdr->len = 0;
2254 } else {
2255 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2256 delta = buffer_replace2(req, cur_ptr + val, cur_end,
2257 "close", 5);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2258 cur_next += delta;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2259 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2260 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2261 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2262 s->flags |= SN_CONN_CLOSED;
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2263 txn->flags &= ~TX_SRV_CONN_KA; /* keep-alive closed on server side */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2264 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2265 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2266 old_idx = cur_idx;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2267 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2268
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2269 /* if there is no "Connection: keep-alive" header left and we're
2270 * in HTTP/1.0, then non-persistent connection is implied */
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2271 if (!(s->flags & SN_CONN_CLOSED) && (msg->sl.rq.v_l == 8) &&
2272 (req->data[msg->som + msg->sl.rq.v + 5] == '1') &&
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2273 (req->data[msg->som + msg->sl.rq.v + 7] == '0')) {
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2274 s->flags |= SN_CONN_CLOSED;
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2275 txn->flags &= ~TX_SRV_CONN_KA; /* keep-alive closed on server side */
2276 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2277 }
2278 /* add request headers from the rule sets in the same order */
2279 for (cur_idx = 0; cur_idx < px->nb_reqadd; cur_idx++) {
2280 if (unlikely(http_header_add_tail(req,
2281 &txn->req,
2282 &txn->hdr_idx,
2283 px->req_add[cur_idx])) < 0)
2284 goto return_bad_req;
2285 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2286
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2287 /* check if stats URI was requested, and if an auth is needed */
2288 if (px->uri_auth != NULL &&
2289 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
2290 /* we have to check the URI and auth for this request.
2291 * FIXME!!! that one is rather dangerous, we want to
2292 * make it follow standard rules (eg: clear req->analysers).
2293 */
2294 if (stats_check_uri_auth(s, px)) {
2295 req->analysers = 0;
2296 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2297 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2298 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2299
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2300 /* check whether we have some ACLs set to redirect this request */
2301 list_for_each_entry(rule, &px->redirect_rules, list) {
2302 int ret = acl_exec_cond(rule->cond, px, s, txn, ACL_DIR_REQ);
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2303
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2304 ret = acl_pass(ret);
2305 if (rule->cond->pol == ACL_COND_UNLESS)
2306 ret = !ret;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2307
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2308 if (ret) {
2309 struct chunk rdr = { trash, 0 };
2310 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2311
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2312 /* build redirect message */
2313 switch(rule->code) {
2314 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2315 msg_fmt = HTTP_303;
2316 break;
2317 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2318 msg_fmt = HTTP_301;
2319 break;
2320 case 302:
2321 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2322 msg_fmt = HTTP_302;
2323 break;
2324 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2325
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2326 if (unlikely(chunk_strcpy(&rdr, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2327 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2328
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2329 switch(rule->type) {
2330 case REDIRECT_TYPE_PREFIX: {
2331 const char *path;
2332 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2333
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2334 path = http_get_path(txn);
2335 /* build message using path */
2336 if (path) {
2337 pathlen = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
2338 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
2339 int qs = 0;
2340 while (qs < pathlen) {
2341 if (path[qs] == '?') {
2342 pathlen = qs;
2343 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2344 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2345 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2346 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2347 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2348 } else {
2349 path = "/";
2350 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2351 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2352
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2353 if (rdr.len + rule->rdr_len + pathlen > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2354 goto return_bad_req;
2355
2356 /* add prefix. Note that if prefix == "/", we don't want to
2357 * add anything, otherwise it makes it hard for the user to
2358 * configure a self-redirection.
2359 */
2360 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2361 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2362 rdr.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2363 }
2364
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2365 /* add path */
2366 memcpy(rdr.str + rdr.len, path, pathlen);
2367 rdr.len += pathlen;
2368 break;
2369 }
2370 case REDIRECT_TYPE_LOCATION:
2371 default:
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2372 if (rdr.len + rule->rdr_len > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2373 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2374
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2375 /* add location */
2376 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2377 rdr.len += rule->rdr_len;
2378 break;
2379 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2380
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2381 if (rule->cookie_len) {
2382 memcpy(rdr.str + rdr.len, "\r\nSet-Cookie: ", 14);
2383 rdr.len += 14;
2384 memcpy(rdr.str + rdr.len, rule->cookie_str, rule->cookie_len);
2385 rdr.len += rule->cookie_len;
2386 memcpy(rdr.str + rdr.len, "\r\n", 2);
2387 rdr.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2388 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2389
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2390 /* add end of headers */
2391 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
2392 rdr.len += 4;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2393
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2394 txn->status = rule->code;
2395 /* let's log the request time */
2396 s->logs.tv_request = now;
2397 stream_int_retnclose(req->prod, &rdr);
2398 goto return_prx_cond;
2399 }
2400 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2401
Willy Tarreauf1ba4b32009-10-17 14:37:52 +0200[diff] [blame]2402 /* We can shut read side if "connection: close" && !abort_on_close && !content-length */
Willy Tarreau349a0f62009-10-18 21:17:42 +0200[diff] [blame]2403 if ((s->flags & SN_CONN_CLOSED) && !(s->be->options & PR_O_ABRT_CLOSE) &&
2404 !(txn->flags & TX_REQ_TE_CHNK) && !txn->req.hdr_content_len && (txn->meth < HTTP_METH_CONNECT))
2405 req->flags |= BF_DONT_READ;
Willy Tarreauf1ba4b32009-10-17 14:37:52 +0200[diff] [blame]2406
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2407 /* that's OK for us now, let's move on to next analysers */
2408 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2409
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2410 return_bad_req:
2411 /* We centralize bad requests processing here */
2412 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2413 /* we detected a parsing error. We want to archive this request
2414 * in the dedicated proxy area for later troubleshooting.
2415 */
2416 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
2417 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2418
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2419 txn->req.msg_state = HTTP_MSG_ERROR;
2420 txn->status = 400;
2421 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2422
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2423 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2424 if (s->listener->counters)
2425 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2426
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2427 return_prx_cond:
2428 if (!(s->flags & SN_ERR_MASK))
2429 s->flags |= SN_ERR_PRXCOND;
2430 if (!(s->flags & SN_FINST_MASK))
2431 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2432
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2433 req->analysers = 0;
2434 req->analyse_exp = TICK_ETERNITY;
2435 return 0;
2436}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2437
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2438/* This function performs all the processing enabled for the current request.
2439 * It returns 1 if the processing can continue on next analysers, or zero if it
2440 * needs more data, encounters an error, or wants to immediately abort the
2441 * request. It relies on buffers flags, and updates s->req->analysers.
2442 */
2443int http_process_request(struct session *s, struct buffer *req, int an_bit)
2444{
2445 struct http_txn *txn = &s->txn;
2446 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2447
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2448 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2449 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2450 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2451 return 0;
2452 }
2453
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2454 req->analysers &= ~an_bit;
2455 req->analyse_exp = TICK_ETERNITY;
2456
2457 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
2458 now_ms, __FUNCTION__,
2459 s,
2460 req,
2461 req->rex, req->wex,
2462 req->flags,
2463 req->l,
2464 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2465
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2466 /*
2467 * Right now, we know that we have processed the entire headers
2468 * and that unwanted requests have been filtered out. We can do
2469 * whatever we want with the remaining request. Also, now we
2470 * may have separate values for ->fe, ->be.
2471 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2472
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2473 /*
2474 * If HTTP PROXY is set we simply get remote server address
2475 * parsing incoming request.
2476 */
2477 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
2478 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &s->srv_addr);
2479 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2480
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2481 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]2482 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2483 * Note that doing so might move headers in the request, but
2484 * the fields will stay coherent and the URI will not move.
2485 * This should only be performed in the backend.
2486 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]2487 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2488 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
2489 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2490
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2491 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]2492 * 8: the appsession cookie was looked up very early in 1.2,
2493 * so let's do the same now.
2494 */
2495
2496 /* It needs to look into the URI */
2497 if ((s->sessid == NULL) && s->be->appsession_name) {
2498 get_srv_from_appsession(s, &req->data[msg->som + msg->sl.rq.u], msg->sl.rq.u_l);
2499 }
2500
2501 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2502 * 9: add X-Forwarded-For if either the frontend or the backend
2503 * asks for it.
2504 */
2505 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
2506 if (s->cli_addr.ss_family == AF_INET) {
2507 /* Add an X-Forwarded-For header unless the source IP is
2508 * in the 'except' network range.
2509 */
2510 if ((!s->fe->except_mask.s_addr ||
2511 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->fe->except_mask.s_addr)
2512 != s->fe->except_net.s_addr) &&
2513 (!s->be->except_mask.s_addr ||
2514 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->be->except_mask.s_addr)
2515 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2516 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2517 unsigned char *pn;
2518 pn = (unsigned char *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2519
2520 /* Note: we rely on the backend to get the header name to be used for
2521 * x-forwarded-for, because the header is really meant for the backends.
2522 * However, if the backend did not specify any option, we have to rely
2523 * on the frontend's header name.
2524 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2525 if (s->be->fwdfor_hdr_len) {
2526 len = s->be->fwdfor_hdr_len;
2527 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2528 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2529 len = s->fe->fwdfor_hdr_len;
2530 memcpy(trash, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]2531 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2532 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]2533
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2534 if (unlikely(http_header_add_tail2(req, &txn->req,
2535 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2536 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2537 }
2538 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2539 else if (s->cli_addr.ss_family == AF_INET6) {
2540 /* FIXME: for the sake of completeness, we should also support
2541 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2542 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2543 int len;
2544 char pn[INET6_ADDRSTRLEN];
2545 inet_ntop(AF_INET6,
2546 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
2547 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2548
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2549 /* Note: we rely on the backend to get the header name to be used for
2550 * x-forwarded-for, because the header is really meant for the backends.
2551 * However, if the backend did not specify any option, we have to rely
2552 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2553 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2554 if (s->be->fwdfor_hdr_len) {
2555 len = s->be->fwdfor_hdr_len;
2556 memcpy(trash, s->be->fwdfor_hdr_name, len);
2557 } else {
2558 len = s->fe->fwdfor_hdr_len;
2559 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2560 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2561 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2562
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2563 if (unlikely(http_header_add_tail2(req, &txn->req,
2564 &txn->hdr_idx, trash, len)) < 0)
2565 goto return_bad_req;
2566 }
2567 }
2568
2569 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]2570 * 10: add X-Original-To if either the frontend or the backend
2571 * asks for it.
2572 */
2573 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
2574
2575 /* FIXME: don't know if IPv6 can handle that case too. */
2576 if (s->cli_addr.ss_family == AF_INET) {
2577 /* Add an X-Original-To header unless the destination IP is
2578 * in the 'except' network range.
2579 */
2580 if (!(s->flags & SN_FRT_ADDR_SET))
2581 get_frt_addr(s);
2582
2583 if ((!s->fe->except_mask_to.s_addr ||
2584 (((struct sockaddr_in *)&s->frt_addr)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
2585 != s->fe->except_to.s_addr) &&
2586 (!s->be->except_mask_to.s_addr ||
2587 (((struct sockaddr_in *)&s->frt_addr)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
2588 != s->be->except_to.s_addr)) {
2589 int len;
2590 unsigned char *pn;
2591 pn = (unsigned char *)&((struct sockaddr_in *)&s->frt_addr)->sin_addr;
2592
2593 /* Note: we rely on the backend to get the header name to be used for
2594 * x-original-to, because the header is really meant for the backends.
2595 * However, if the backend did not specify any option, we have to rely
2596 * on the frontend's header name.
2597 */
2598 if (s->be->orgto_hdr_len) {
2599 len = s->be->orgto_hdr_len;
2600 memcpy(trash, s->be->orgto_hdr_name, len);
2601 } else {
2602 len = s->fe->orgto_hdr_len;
2603 memcpy(trash, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]2604 }
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]2605 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
2606
2607 if (unlikely(http_header_add_tail2(req, &txn->req,
2608 &txn->hdr_idx, trash, len)) < 0)
2609 goto return_bad_req;
2610 }
2611 }
2612 }
2613
Willy Tarreaud0f06fc2009-11-30 12:19:56 +0100[diff] [blame]2614
2615 /* indicate in the session if it will be a tunnel-mode one or not. If
2616 * we don't intend to analyse contents after the first request, it's a
2617 * tunnel.
2618 */
2619 if (s->txn.meth == HTTP_METH_CONNECT ||
2620 !((s->fe->options|s->be->options) & (PR_O_KEEPALIVE|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)))
2621 s->flags |= SN_TUNNEL;
2622
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2623 /* 11: add "Connection: close" if needed and not yet set. */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2624 if (!(s->flags & SN_CONN_CLOSED) &&
2625 ((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2626 if (unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2627 "Connection: close", 17)) < 0)
2628 goto return_bad_req;
2629 s->flags |= SN_CONN_CLOSED;
2630 }
2631 /* Before we switch to data, was assignment set in manage_client_side_cookie?
2632 * If not assigned, perhaps we are balancing on url_param, but this is a
2633 * POST; and the parameters are in the body, maybe scan there to find our server.
2634 * (unless headers overflowed the buffer?)
2635 */
2636 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
2637 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
2638 s->be->url_param_post_limit != 0 && !(req->flags & BF_FULL) &&
2639 memchr(msg->sol + msg->sl.rq.u, '?', msg->sl.rq.u_l) == NULL) {
2640 /* are there enough bytes here? total == l || r || rlim ?
2641 * len is unsigned, but eoh is int,
2642 * how many bytes of body have we received?
2643 * eoh is the first empty line of the header
2644 */
2645 /* already established CRLF or LF at eoh, move to start of message, find message length in buffer */
2646 unsigned long len = req->l - (msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1);
2647
2648 /* If we have HTTP/1.1 and Expect: 100-continue, then abort.
2649 * We can't assume responsibility for the server's decision,
2650 * on this URI and header set. See rfc2616: 14.20, 8.2.3,
2651 * We also can't change our mind later, about which server to choose, so round robin.
2652 */
2653 if ((likely(msg->sl.rq.v_l == 8) && req->data[msg->som + msg->sl.rq.v + 7] == '1')) {
2654 struct hdr_ctx ctx;
2655 ctx.idx = 0;
2656 /* Expect is allowed in 1.1, look for it */
2657 http_find_header2("Expect", 6, msg->sol, &txn->hdr_idx, &ctx);
2658 if (ctx.idx != 0 &&
2659 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0))
2660 /* We can't reliablly stall and wait for data, because of
2661 * .NET clients that don't conform to rfc2616; so, no need for
2662 * the next block to check length expectations.
2663 * We could send 100 status back to the client, but then we need to
2664 * re-write headers, and send the message. And this isn't the right
2665 * place for that action.
2666 * TODO: support Expect elsewhere and delete this block.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2667 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2668 goto end_check_maybe_wait_for_body;
2669 }
2670
Willy Tarreau03a56332009-10-18 21:28:29 +0200[diff] [blame]2671 if (likely(len <= s->be->url_param_post_limit)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2672 /* limit implies we are supposed to need this many bytes
Willy Tarreau03a56332009-10-18 21:28:29 +0200[diff] [blame]2673 * to find the parameter. Let's see how many bytes we can
2674 * wait for.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2675 */
Willy Tarreau03a56332009-10-18 21:28:29 +0200[diff] [blame]2676 if (txn->flags & TX_REQ_TE_CHNK) {
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2677 buffer_dont_connect(req);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2678 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau03a56332009-10-18 21:28:29 +0200[diff] [blame]2679 } else {
2680 long long hint = txn->req.hdr_content_len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2681 /* but limited to what we care about, maybe we don't expect any entity data (hint == 0) */
2682 if (s->be->url_param_post_limit < hint)
2683 hint = s->be->url_param_post_limit;
Willy Tarreau03a56332009-10-18 21:28:29 +0200[diff] [blame]2684
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2685 /* now do we really need to buffer more data? */
2686 if (len < hint) {
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2687 buffer_dont_connect(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2688 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2689 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2690 /* else... There are no body bytes to wait for */
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2691 }
2692 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2693 }
2694 end_check_maybe_wait_for_body:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2695
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2696 /*************************************************************
2697 * OK, that's finished for the headers. We have done what we *
2698 * could. Let's switch to the DATA state. *
2699 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2700
Willy Tarreaua07a34e2009-08-16 23:27:46 +0200[diff] [blame]2701 buffer_set_rlim(req, req->size); /* no more rewrite needed */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2702 s->logs.tv_request = now;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2703
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2704 /* OK let's go on with the BODY now */
2705 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2706
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2707 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2708 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2709 /* we detected a parsing error. We want to archive this request
2710 * in the dedicated proxy area for later troubleshooting.
2711 */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2712 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2713 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2714
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2715 txn->req.msg_state = HTTP_MSG_ERROR;
2716 txn->status = 400;
2717 req->analysers = 0;
2718 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2719
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2720 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2721 if (s->listener->counters)
2722 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2723
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2724 if (!(s->flags & SN_ERR_MASK))
2725 s->flags |= SN_ERR_PRXCOND;
2726 if (!(s->flags & SN_FINST_MASK))
2727 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2728 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2729}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2730
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2731/* This function is an analyser which processes the HTTP tarpit. It always
2732 * returns zero, at the beginning because it prevents any other processing
2733 * from occurring, and at the end because it terminates the request.
2734 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2735int http_process_tarpit(struct session *s, struct buffer *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2736{
2737 struct http_txn *txn = &s->txn;
2738
2739 /* This connection is being tarpitted. The CLIENT side has
2740 * already set the connect expiration date to the right
2741 * timeout. We just have to check that the client is still
2742 * there and that the timeout has not expired.
2743 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2744 buffer_dont_connect(req);
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2745 if ((req->flags & (BF_SHUTR|BF_READ_ERROR)) == 0 &&
2746 !tick_is_expired(req->analyse_exp, now_ms))
2747 return 0;
2748
2749 /* We will set the queue timer to the time spent, just for
2750 * logging purposes. We fake a 500 server error, so that the
2751 * attacker will not suspect his connection has been tarpitted.
2752 * It will not cause trouble to the logs because we can exclude
2753 * the tarpitted connections by filtering on the 'PT' status flags.
2754 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2755 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
2756
2757 txn->status = 500;
2758 if (req->flags != BF_READ_ERROR)
2759 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_500));
2760
2761 req->analysers = 0;
2762 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2763
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2764 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2765 if (s->listener->counters)
2766 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2767
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2768 if (!(s->flags & SN_ERR_MASK))
2769 s->flags |= SN_ERR_PRXCOND;
2770 if (!(s->flags & SN_FINST_MASK))
2771 s->flags |= SN_FINST_T;
2772 return 0;
2773}
2774
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2775/* This function is an analyser which processes the HTTP request body. It looks
2776 * for parameters to be used for the load balancing algorithm (url_param). It
2777 * must only be called after the standard HTTP request processing has occurred,
2778 * because it expects the request to be parsed. It returns zero if it needs to
2779 * read more data, or 1 once it has completed its analysis.
2780 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2781int http_process_request_body(struct session *s, struct buffer *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2782{
2783 struct http_msg *msg = &s->txn.req;
2784 unsigned long body = msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1;
2785 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2786
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2787 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2788 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2789 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2790 return 0;
2791 }
2792
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2793 /* We have to parse the HTTP request body to find any required data.
2794 * "balance url_param check_post" should have been the only way to get
2795 * into this. We were brought here after HTTP header analysis, so all
2796 * related structures are ready.
2797 */
2798
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2799 /* now if we have a length, we'll take the hint */
Willy Tarreau2225dd42009-10-18 21:36:47 +0200[diff] [blame]2800 if (s->txn.flags & TX_REQ_TE_CHNK) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2801 unsigned int chunk = 0;
2802 while (body < req->l && !HTTP_IS_CRLF(msg->sol[body])) {
2803 char c = msg->sol[body];
2804 if (ishex(c)) {
2805 unsigned int hex = toupper(c) - '0';
2806 if (hex > 9)
2807 hex -= 'A' - '9' - 1;
2808 chunk = (chunk << 4) | hex;
2809 } else
2810 break;
2811 body++;
2812 }
2813 if (body + 2 >= req->l) /* we want CRLF too */
2814 goto http_body_end; /* end of buffer? data missing! */
2815
2816 if (memcmp(msg->sol+body, "\r\n", 2) != 0)
2817 goto http_body_end; /* chunked encoding len ends with CRLF, and we don't have it yet */
2818
2819 body += 2; // skip CRLF
2820
2821 /* if we support more then one chunk here, we have to do it again when assigning server
2822 * 1. how much entity data do we have? new var
2823 * 2. should save entity_start, entity_cursor, elen & rlen in req; so we don't repeat scanning here
2824 * 3. test if elen > limit, or set new limit to elen if 0 (end of entity found)
2825 */
2826
2827 if (chunk < limit)
2828 limit = chunk; /* only reading one chunk */
2829 } else {
2830 if (msg->hdr_content_len < limit)
2831 limit = msg->hdr_content_len;
2832 }
2833
2834 http_body_end:
2835 /* we leave once we know we have nothing left to do. This means that we have
2836 * enough bytes, or that we know we'll not get any more (buffer full, read
2837 * buffer closed).
2838 */
2839 if (req->l - body >= limit || /* enough bytes! */
2840 req->flags & (BF_FULL | BF_READ_ERROR | BF_SHUTR | BF_READ_TIMEOUT) ||
2841 tick_is_expired(req->analyse_exp, now_ms)) {
2842 /* The situation will not evolve, so let's give up on the analysis. */
2843 s->logs.tv_request = now; /* update the request timer to reflect full request */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2844 req->analysers &= ~an_bit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2845 req->analyse_exp = TICK_ETERNITY;
2846 return 1;
2847 }
2848 else {
2849 /* Not enough data. We'll re-use the http-request
2850 * timeout here. Ideally, we should set the timeout
2851 * relative to the accept() date. We just set the
2852 * request timeout once at the beginning of the
2853 * request.
2854 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2855 buffer_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2856 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]2857 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2858 return 0;
2859 }
2860}
2861
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2862/* This stream analyser waits for a complete HTTP response. It returns 1 if the
2863 * processing can continue on next analysers, or zero if it either needs more
2864 * data or wants to immediately abort the response (eg: timeout, error, ...). It
2865 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
2866 * when it has nothing left to do, and may remove any analyser when it wants to
2867 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2868 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2869int http_wait_for_response(struct session *s, struct buffer *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2870{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2871 struct http_txn *txn = &s->txn;
2872 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]2873 struct hdr_ctx ctx;
2874 int conn_ka, conn_cl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2875 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]2876 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2877
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2878 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]2879 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2880 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2881 rep,
2882 rep->rex, rep->wex,
2883 rep->flags,
2884 rep->l,
2885 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]2886
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2887 /*
2888 * Now parse the partial (or complete) lines.
2889 * We will check the response syntax, and also join multi-line
2890 * headers. An index of all the lines will be elaborated while
2891 * parsing.
2892 *
2893 * For the parsing, we use a 28 states FSM.
2894 *
2895 * Here is the information we currently have :
2896 * rep->data + rep->som = beginning of response
2897 * rep->data + rep->eoh = end of processed headers / start of current one
2898 * rep->data + rep->eol = end of current header or line (LF or CRLF)
2899 * rep->lr = first non-visited byte
2900 * rep->r = end of data
2901 */
2902
2903 if (likely(rep->lr < rep->r))
2904 http_msg_analyzer(rep, msg, &txn->hdr_idx);
Willy Tarreau7f875f62008-08-11 17:35:01 +0200[diff] [blame]2905
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2906 /* 1: we might have to print this header in debug mode */
2907 if (unlikely((global.mode & MODE_DEBUG) &&
2908 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2909 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2910 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2911
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2912 sol = rep->data + msg->som;
2913 eol = sol + msg->sl.rq.l;
2914 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2915
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2916 sol += hdr_idx_first_pos(&txn->hdr_idx);
2917 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2918
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2919 while (cur_idx) {
2920 eol = sol + txn->hdr_idx.v[cur_idx].len;
2921 debug_hdr("srvhdr", s, sol, eol);
2922 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2923 cur_idx = txn->hdr_idx.v[cur_idx].next;
2924 }
2925 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2926
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2927 /*
2928 * Now we quickly check if we have found a full valid response.
2929 * If not so, we check the FD and buffer states before leaving.
2930 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2931 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2932 * responses are checked first.
2933 *
2934 * Depending on whether the client is still there or not, we
2935 * may send an error response back or not. Note that normally
2936 * we should only check for HTTP status there, and check I/O
2937 * errors somewhere else.
2938 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2939
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2940 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2941 /* Invalid response */
2942 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
2943 /* we detected a parsing error. We want to archive this response
2944 * in the dedicated proxy area for later troubleshooting.
2945 */
2946 hdr_response_bad:
2947 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
2948 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
2949
2950 s->be->counters.failed_resp++;
2951 if (s->srv)
2952 s->srv->counters.failed_resp++;
2953
2954 rep->analysers = 0;
2955 txn->status = 502;
2956 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
2957
2958 if (!(s->flags & SN_ERR_MASK))
2959 s->flags |= SN_ERR_PRXCOND;
2960 if (!(s->flags & SN_FINST_MASK))
2961 s->flags |= SN_FINST_H;
2962
2963 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2964 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2965
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2966 /* too large response does not fit in buffer. */
2967 else if (rep->flags & BF_FULL) {
2968 goto hdr_response_bad;
2969 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2970
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2971 /* read error */
2972 else if (rep->flags & BF_READ_ERROR) {
2973 if (msg->err_pos >= 0)
2974 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2975
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2976 s->be->counters.failed_resp++;
2977 if (s->srv)
2978 s->srv->counters.failed_resp++;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2979
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2980 rep->analysers = 0;
2981 txn->status = 502;
2982 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]2983
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2984 if (!(s->flags & SN_ERR_MASK))
2985 s->flags |= SN_ERR_SRVCL;
2986 if (!(s->flags & SN_FINST_MASK))
2987 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2988 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2989 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2990
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2991 /* read timeout : return a 504 to the client. */
2992 else if (rep->flags & BF_READ_TIMEOUT) {
2993 if (msg->err_pos >= 0)
2994 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2995
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2996 s->be->counters.failed_resp++;
2997 if (s->srv)
2998 s->srv->counters.failed_resp++;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2999
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3000 rep->analysers = 0;
3001 txn->status = 504;
3002 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3003
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3004 if (!(s->flags & SN_ERR_MASK))
3005 s->flags |= SN_ERR_SRVTO;
3006 if (!(s->flags & SN_FINST_MASK))
3007 s->flags |= SN_FINST_H;
3008 return 0;
3009 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]3010
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3011 /* close from server */
3012 else if (rep->flags & BF_SHUTR) {
3013 if (msg->err_pos >= 0)
3014 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3015
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3016 s->be->counters.failed_resp++;
3017 if (s->srv)
3018 s->srv->counters.failed_resp++;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3019
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3020 rep->analysers = 0;
3021 txn->status = 502;
3022 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3023
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3024 if (!(s->flags & SN_ERR_MASK))
3025 s->flags |= SN_ERR_SRVCL;
3026 if (!(s->flags & SN_FINST_MASK))
3027 s->flags |= SN_FINST_H;
3028 return 0;
3029 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]3030
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3031 /* write error to client (we don't send any message then) */
3032 else if (rep->flags & BF_WRITE_ERROR) {
3033 if (msg->err_pos >= 0)
3034 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]3035
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3036 s->be->counters.failed_resp++;
3037 rep->analysers = 0;
3038
3039 if (!(s->flags & SN_ERR_MASK))
3040 s->flags |= SN_ERR_CLICL;
3041 if (!(s->flags & SN_FINST_MASK))
3042 s->flags |= SN_FINST_H;
3043
3044 /* process_session() will take care of the error */
3045 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3046 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3047
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3048 buffer_dont_close(rep);
3049 return 0;
3050 }
3051
3052 /* More interesting part now : we know that we have a complete
3053 * response which at least looks like HTTP. We have an indicator
3054 * of each header's length, so we can parse them quickly.
3055 */
3056
3057 if (unlikely(msg->err_pos >= 0))
3058 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
3059
3060 /* ensure we keep this pointer to the beginning of the message */
3061 msg->sol = rep->data + msg->som;
3062
3063 /*
3064 * 1: get the status code
3065 */
3066 n = rep->data[msg->sl.st.c] - '0';
3067 if (n < 1 || n > 5)
3068 n = 0;
3069 s->srv->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3070
3071 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
3072
3073 /*
3074 * 2: check for cacheability.
3075 */
3076
3077 switch (txn->status) {
3078 case 200:
3079 case 203:
3080 case 206:
3081 case 300:
3082 case 301:
3083 case 410:
3084 /* RFC2616 @13.4:
3085 * "A response received with a status code of
3086 * 200, 203, 206, 300, 301 or 410 MAY be stored
3087 * by a cache (...) unless a cache-control
3088 * directive prohibits caching."
3089 *
3090 * RFC2616 @9.5: POST method :
3091 * "Responses to this method are not cacheable,
3092 * unless the response includes appropriate
3093 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3094 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3095 if (likely(txn->meth != HTTP_METH_POST) &&
3096 (s->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
3097 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
3098 break;
3099 default:
3100 break;
3101 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3102
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3103 /*
3104 * 3: we may need to capture headers
3105 */
3106 s->logs.logwait &= ~LW_RESP;
3107 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->fe->rsp_cap))
3108 capture_headers(rep->data + msg->som, &txn->hdr_idx,
3109 txn->rsp.cap, s->fe->rsp_cap);
3110
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]3111 /* 4: determine if we have a transfer-encoding or content-length.
3112 * RFC2616 #4.4 states that :
3113 * - Any response which "MUST NOT" include a message-body (such as the
3114 * 1xx, 204 and 304 responses and any response to a HEAD request) is
3115 * always terminated by the first empty line after the header fields,
3116 * regardless of the entity-header fields present in the message.
3117 *
3118 * - If a Transfer-Encoding header field is present and has any value
3119 * other than "identity", then the transfer-length is defined by use
3120 * of the "chunked" transfer-coding ;
3121 *
3122 * - If a Content-Length header field is present, its decimal value in
3123 * OCTETs represents both the entity-length and the transfer-length.
3124 * If a message is received with both a Transfer-Encoding header
3125 * field and a Content-Length header field, the latter MUST be ignored.
3126 */
3127
3128 /* Skip parsing if no content length is possible. The response flags
3129 * remain 0 as well as the hdr_content_len, which may or may not mirror
3130 * the real header value.
3131 * FIXME: should we parse anyway and return an error on chunked encoding ?
3132 */
3133 if (txn->meth == HTTP_METH_HEAD ||
3134 (txn->status >= 100 && txn->status < 200) ||
3135 txn->status == 204 || txn->status == 304)
3136 goto skip_content_length;
3137
3138 /* FIXME: chunked encoding is HTTP/1.1 only */
3139 ctx.idx = 0;
3140 while (http_find_header2("Transfer-Encoding", 17, msg->sol, &txn->hdr_idx, &ctx)) {
3141 if (ctx.vlen == 8 && strncasecmp(ctx.line + ctx.val, "identity", 8) == 0)
3142 continue;
3143 txn->flags |= TX_RES_TE_CHNK;
3144 break;
3145 }
3146
3147 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
3148 ctx.idx = 0;
3149 while (!(txn->flags & TX_RES_TE_CHNK) &&
3150 http_find_header2("Content-Length", 14, msg->sol, &txn->hdr_idx, &ctx)) {
3151 signed long long cl;
3152
3153 if (!ctx.vlen)
3154 goto hdr_response_bad;
3155
3156 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl))
3157 goto hdr_response_bad; /* parse failure */
3158
3159 if (cl < 0)
3160 goto hdr_response_bad;
3161
3162 if ((txn->flags & TX_RES_CNT_LEN) && (msg->hdr_content_len != cl))
3163 goto hdr_response_bad; /* already specified, was different */
3164
3165 txn->flags |= TX_RES_CNT_LEN;
3166 msg->hdr_content_len = cl;
3167 }
3168
3169skip_content_length:
3170 /* Determine if the server wishes keep-alive or close.
3171 * RFC2616 #8.1.2 and #14.10 state that HTTP/1.1 and above connections
3172 * are persistent unless "Connection: close" is explicitly specified.
3173 * RFC2616 #19.6.2 refers to RFC2068 for HTTP/1.0 persistent connections.
3174 * RFC2068 #19.7.1 states that HTTP/1.0 clients are not persistent unless
3175 * they explicitly specify "Connection: keep-alive", regardless of any
3176 * optional "keep-alive" header.
3177 */
3178
3179 /* FIXME: should we also remove any header specified in "connection" ? */
3180 conn_ka = conn_cl = 0;
3181 ctx.idx = 0;
3182 while (http_find_header2("Connection", 10, msg->sol, &txn->hdr_idx, &ctx)) {
3183 if (ctx.vlen == 5 && strncasecmp(ctx.line + ctx.val, "close", 5) == 0)
3184 conn_cl = 1;
3185 else if (ctx.vlen == 10 && strncasecmp(ctx.line + ctx.val, "keep-alive", 10) == 0)
3186 conn_ka = 1;
3187 }
3188
3189 if ((msg->sl.st.v_l == 8) &&
3190 (rep->data[msg->som + 5] == '1') &&
3191 (rep->data[msg->som + 7] == '0')) {
3192 /* HTTP/1.0 */
3193 if (!conn_ka)
3194 txn->flags &= ~TX_SRV_CONN_KA;
3195 } else {
3196 /* HTTP/1.1 */
3197 if (conn_cl)
3198 txn->flags &= ~TX_SRV_CONN_KA;;
3199 }
3200
3201 /* we can mark the connection as non-persistent if needed */
3202 s->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
3203 if (!(txn->flags & TX_SRV_CONN_KA))
3204 s->flags |= SN_CONN_CLOSED;
3205
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3206 /* end of job, return OK */
3207 rep->analysers &= ~an_bit;
3208 rep->analyse_exp = TICK_ETERNITY;
3209 return 1;
3210}
3211
3212/* This function performs all the processing enabled for the current response.
3213 * It normally returns zero, but may return 1 if it absolutely needs to be
3214 * called again after other functions. It relies on buffers flags, and updates
3215 * t->rep->analysers. It might make sense to explode it into several other
3216 * functions. It works like process_request (see indications above).
3217 */
3218int http_process_res_common(struct session *t, struct buffer *rep, int an_bit, struct proxy *px)
3219{
3220 struct http_txn *txn = &t->txn;
3221 struct buffer *req = t->req;
3222 struct http_msg *msg = &txn->rsp;
3223 struct proxy *cur_proxy;
3224 int cur_idx;
3225
3226 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
3227 now_ms, __FUNCTION__,
3228 t,
3229 rep,
3230 rep->rex, rep->wex,
3231 rep->flags,
3232 rep->l,
3233 rep->analysers);
3234
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3235 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3236 return 0;
3237
3238 rep->analysers &= ~an_bit;
3239 rep->analyse_exp = TICK_ETERNITY;
3240
3241 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3242 /*
3243 * 3: we will have to evaluate the filters.
3244 * As opposed to version 1.2, now they will be evaluated in the
3245 * filters order and not in the header order. This means that
3246 * each filter has to be validated among all headers.
3247 *
3248 * Filters are tried with ->be first, then with ->fe if it is
3249 * different from ->be.
3250 */
3251
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3252 cur_proxy = t->be;
3253 while (1) {
3254 struct proxy *rule_set = cur_proxy;
3255
3256 /* try headers filters */
3257 if (rule_set->rsp_exp != NULL) {
3258 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
3259 return_bad_resp:
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3260 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3261 t->srv->counters.failed_resp++;
3262 cur_proxy->counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3263 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]3264 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3265 txn->status = 502;
Willy Tarreau8e89b842009-10-18 23:56:35 +0200[diff] [blame]3266 stream_int_retnclose(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3267 if (!(t->flags & SN_ERR_MASK))
3268 t->flags |= SN_ERR_PRXCOND;
3269 if (!(t->flags & SN_FINST_MASK))
3270 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3271 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3272 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3273 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3274
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3275 /* has the response been denied ? */
3276 if (txn->flags & TX_SVDENY) {
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3277 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3278 t->srv->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3279
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3280 cur_proxy->counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3281 if (t->listener->counters)
3282 t->listener->counters->denied_resp++;
3283
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3284 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]3285 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3286
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3287 /* We might have to check for "Connection:" */
3288 if (((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3289 !(t->flags & SN_CONN_CLOSED) &&
3290 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3291 char *cur_ptr, *cur_end, *cur_next;
3292 int cur_idx, old_idx, delta, val;
3293 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3294
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3295 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3296 old_idx = 0;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]3297
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3298 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
3299 cur_hdr = &txn->hdr_idx.v[cur_idx];
3300 cur_ptr = cur_next;
3301 cur_end = cur_ptr + cur_hdr->len;
3302 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3303
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3304 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
3305 if (val) {
3306 /* 3 possibilities :
3307 * - we have already set Connection: close,
3308 * so we remove this line.
3309 * - we have not yet set Connection: close,
3310 * but this line indicates close. We leave
3311 * it untouched and set the flag.
3312 * - we have not yet set Connection: close,
3313 * and this line indicates non-close. We
3314 * replace it.
3315 */
3316 if (t->flags & SN_CONN_CLOSED) {
3317 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]3318 http_msg_move_end(&txn->rsp, delta);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3319 cur_next += delta;
3320 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3321 txn->hdr_idx.used--;
3322 cur_hdr->len = 0;
3323 } else {
3324 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
3325 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
3326 "close", 5);
3327 cur_next += delta;
3328 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]3329 http_msg_move_end(&txn->rsp, delta);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3330 }
3331 t->flags |= SN_CONN_CLOSED;
3332 }
3333 }
3334 old_idx = cur_idx;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]3335 }
3336 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3337
Willy Tarreaub50943e2009-10-18 23:52:50 +0200[diff] [blame]3338 /* if there is no "Connection: keep-alive" header left and we're
3339 * in HTTP/1.0, then non-persistent connection is implied */
3340 if (!(t->flags & SN_CONN_CLOSED) && (msg->sl.st.v_l == 8) &&
3341 (rep->data[msg->som + 5] == '1') &&
3342 (rep->data[msg->som + 7] == '0')) {
3343 t->flags |= SN_CONN_CLOSED;
3344 txn->flags &= ~TX_CLI_CONN_KA; /* keep-alive closed on server side */
3345 }
3346
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3347 /* add response headers from the rule sets in the same order */
3348 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3349 if (txn->status < 200)
3350 break;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3351 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
3352 rule_set->rsp_add[cur_idx])) < 0)
3353 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]3354 }
3355
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3356 /* check whether we're already working on the frontend */
3357 if (cur_proxy == t->fe)
3358 break;
3359 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3360 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3361
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3362 /*
3363 * 4: check for server cookie.
3364 */
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3365 if ((t->be->cookie_name || t->be->appsession_name || t->fe->capture_name
3366 || (t->be->options & PR_O_CHK_CACHE)) && txn->status >= 200)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3367 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3368
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3369
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3370 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3371 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3372 */
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3373 if ((t->be->options & (PR_O_COOK_NOC | PR_O_CHK_CACHE)) != 0 && txn->status >= 200)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3374 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3375
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3376 /*
3377 * 6: add server cookie in the response if needed
3378 */
3379 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3380 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST)) &&
3381 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3382 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3383
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3384 /* the server is known, it's not the one the client requested, we have to
3385 * insert a set-cookie here, except if we want to insert only on POST
3386 * requests and this one isn't. Note that servers which don't have cookies
3387 * (eg: some backup servers) will return a full cookie removal request.
3388 */
3389 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
3390 t->be->cookie_name,
3391 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]3392
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3393 if (t->be->cookie_domain)
3394 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3395
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3396 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3397 trash, len)) < 0)
3398 goto return_bad_resp;
3399 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3400
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3401 /* Here, we will tell an eventual cache on the client side that we don't
3402 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
3403 * Some caches understand the correct form: 'no-cache="set-cookie"', but
3404 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
3405 */
3406 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3407
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3408 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
3409
3410 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3411 "Cache-control: private", 22)) < 0)
3412 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3413 }
3414 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3415
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3416
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3417 /*
3418 * 7: check if result will be cacheable with a cookie.
3419 * We'll block the response if security checks have caught
3420 * nasty things such as a cacheable cookie.
3421 */
3422 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
3423 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3424 (t->be->options & PR_O_CHK_CACHE) &&
3425 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3426
3427 /* we're in presence of a cacheable response containing
3428 * a set-cookie header. We'll block it as requested by
3429 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3430 */
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3431 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3432 t->srv->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3433
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3434 cur_proxy->counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3435 if (t->listener->counters)
3436 t->listener->counters->denied_resp++;
3437
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3438 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
3439 t->be->id, t->srv?t->srv->id:"<dispatch>");
3440 send_log(t->be, LOG_ALERT,
3441 "Blocking cacheable cookie in response from instance %s, server %s.\n",
3442 t->be->id, t->srv?t->srv->id:"<dispatch>");
3443 goto return_srv_prx_502;
3444 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3445
3446 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3447 * 8: add "Connection: close" if needed and not yet set.
3448 * 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]3449 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3450 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3451 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
3452 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3453 if ((unlikely(msg->sl.st.v_l != 8) ||
3454 unlikely(req->data[msg->som + 7] != '0')) &&
3455 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3456 "Connection: close", 17)) < 0)
3457 goto return_bad_resp;
3458 t->flags |= SN_CONN_CLOSED;
3459 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3460
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3461 /*
3462 * 9: we may be facing a 1xx response (100 continue, 101 switching protocols),
3463 * in which case this is not the right response, and we're waiting for the
3464 * next one. Let's allow this response to go to the client and wait for the
3465 * next one.
3466 */
3467 if (txn->status < 200) {
3468 hdr_idx_init(&txn->hdr_idx);
3469 buffer_forward(rep, rep->lr - (rep->data + msg->som));
3470 msg->msg_state = HTTP_MSG_RPBEFORE;
3471 txn->status = 0;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3472 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
3473 return 1;
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3474 }
3475
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3476 /*************************************************************
3477 * OK, that's finished for the headers. We have done what we *
3478 * could. Let's switch to the DATA state. *
3479 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3480
Willy Tarreaua07a34e2009-08-16 23:27:46 +0200[diff] [blame]3481 buffer_set_rlim(rep, rep->size); /* no more rewrite needed */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3482 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3483
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3484 /* if the user wants to log as soon as possible, without counting
3485 * bytes from the server, then this is the right moment. We have
3486 * to temporarily assign bytes_out to log what we currently have.
3487 */
3488 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
3489 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
3490 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]3491 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3492 t->logs.bytes_out = 0;
3493 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3494
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3495 /* Note: we must not try to cheat by jumping directly to DATA,
3496 * otherwise we would not let the client side wake up.
3497 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3498
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3499 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3500 }
3501 return 0;
3502}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3503
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3504/* Iterate the same filter through all request headers.
3505 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3506 * Since it can manage the switch to another backend, it updates the per-proxy
3507 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3508 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3509int 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]3510{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3511 char term;
3512 char *cur_ptr, *cur_end, *cur_next;
3513 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3514 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3515 struct hdr_idx_elem *cur_hdr;
3516 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3517
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3518 last_hdr = 0;
3519
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3520 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3521 old_idx = 0;
3522
3523 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3524 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3525 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3526 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3527 (exp->action == ACT_ALLOW ||
3528 exp->action == ACT_DENY ||
3529 exp->action == ACT_TARPIT))
3530 return 0;
3531
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3532 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3533 if (!cur_idx)
3534 break;
3535
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3536 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3537 cur_ptr = cur_next;
3538 cur_end = cur_ptr + cur_hdr->len;
3539 cur_next = cur_end + cur_hdr->cr + 1;
3540
3541 /* Now we have one header between cur_ptr and cur_end,
3542 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3543 */
3544
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3545 /* The annoying part is that pattern matching needs
3546 * that we modify the contents to null-terminate all
3547 * strings before testing them.
3548 */
3549
3550 term = *cur_end;
3551 *cur_end = '\0';
3552
3553 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3554 switch (exp->action) {
3555 case ACT_SETBE:
3556 /* It is not possible to jump a second time.
3557 * FIXME: should we return an HTTP/500 here so that
3558 * the admin knows there's a problem ?
3559 */
3560 if (t->be != t->fe)
3561 break;
3562
3563 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3564 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3565 last_hdr = 1;
3566 break;
3567
3568 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3569 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3570 last_hdr = 1;
3571 break;
3572
3573 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3574 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3575 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3576
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3577 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3578 if (t->listener->counters)
3579 t->listener->counters->denied_resp++;
3580
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3581 break;
3582
3583 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3584 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3585 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3586
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3587 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3588 if (t->listener->counters)
3589 t->listener->counters->denied_resp++;
3590
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3591 break;
3592
3593 case ACT_REPLACE:
3594 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3595 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3596 /* FIXME: if the user adds a newline in the replacement, the
3597 * index will not be recalculated for now, and the new line
3598 * will not be counted as a new header.
3599 */
3600
3601 cur_end += delta;
3602 cur_next += delta;
3603 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]3604 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3605 break;
3606
3607 case ACT_REMOVE:
3608 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3609 cur_next += delta;
3610
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]3611 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3612 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3613 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3614 cur_hdr->len = 0;
3615 cur_end = NULL; /* null-term has been rewritten */
3616 break;
3617
3618 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3619 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3620 if (cur_end)
3621 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3622
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3623 /* keep the link from this header to next one in case of later
3624 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3625 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3626 old_idx = cur_idx;
3627 }
3628 return 0;
3629}
3630
3631
3632/* Apply the filter to the request line.
3633 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3634 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3635 * Since it can manage the switch to another backend, it updates the per-proxy
3636 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3637 */
3638int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3639{
3640 char term;
3641 char *cur_ptr, *cur_end;
3642 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3643 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3644 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3645
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3646
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3647 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3648 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3649 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3650 (exp->action == ACT_ALLOW ||
3651 exp->action == ACT_DENY ||
3652 exp->action == ACT_TARPIT))
3653 return 0;
3654 else if (exp->action == ACT_REMOVE)
3655 return 0;
3656
3657 done = 0;
3658
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3659 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3660 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3661
3662 /* Now we have the request line between cur_ptr and cur_end */
3663
3664 /* The annoying part is that pattern matching needs
3665 * that we modify the contents to null-terminate all
3666 * strings before testing them.
3667 */
3668
3669 term = *cur_end;
3670 *cur_end = '\0';
3671
3672 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3673 switch (exp->action) {
3674 case ACT_SETBE:
3675 /* It is not possible to jump a second time.
3676 * FIXME: should we return an HTTP/500 here so that
3677 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3678 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3679 if (t->be != t->fe)
3680 break;
3681
3682 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3683 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3684 done = 1;
3685 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3686
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3687 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3688 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3689 done = 1;
3690 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3691
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3692 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3693 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3694
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3695 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3696 if (t->listener->counters)
3697 t->listener->counters->denied_resp++;
3698
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3699 done = 1;
3700 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3701
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3702 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3703 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3704
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3705 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3706 if (t->listener->counters)
3707 t->listener->counters->denied_resp++;
3708
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3709 done = 1;
3710 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3711
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3712 case ACT_REPLACE:
3713 *cur_end = term; /* restore the string terminator */
3714 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3715 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3716 /* FIXME: if the user adds a newline in the replacement, the
3717 * index will not be recalculated for now, and the new line
3718 * will not be counted as a new header.
3719 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3720
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]3721 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3722 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3723
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3724 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3725 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3726 HTTP_MSG_RQMETH,
3727 cur_ptr, cur_end + 1,
3728 NULL, NULL);
3729 if (unlikely(!cur_end))
3730 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3731
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3732 /* we have a full request and we know that we have either a CR
3733 * or an LF at <ptr>.
3734 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3735 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
3736 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]3737 /* there is no point trying this regex on headers */
3738 return 1;
3739 }
3740 }
3741 *cur_end = term; /* restore the string terminator */
3742 return done;
3743}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]3744
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3745
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3746
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3747/*
3748 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
3749 * 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]3750 * unparsable request. Since it can manage the switch to another backend, it
3751 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3752 */
3753int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
3754{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3755 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3756 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3757 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3758 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3759
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3760 /*
3761 * The interleaving of transformations and verdicts
3762 * makes it difficult to decide to continue or stop
3763 * the evaluation.
3764 */
3765
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3766 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3767 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3768 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
3769 exp = exp->next;
3770 continue;
3771 }
3772
3773 /* Apply the filter to the request line. */
3774 ret = apply_filter_to_req_line(t, req, exp);
3775 if (unlikely(ret < 0))
3776 return -1;
3777
3778 if (likely(ret == 0)) {
3779 /* The filter did not match the request, it can be
3780 * iterated through all headers.
3781 */
3782 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3783 }
3784 exp = exp->next;
3785 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3786 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3787}
3788
3789
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3790
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3791/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]3792 * Try to retrieve the server associated to the appsession.
3793 * If the server is found, it's assigned to the session.
3794 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3795void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]3796 struct http_txn *txn = &t->txn;
3797 appsess *asession = NULL;
3798 char *sessid_temp = NULL;
3799
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3800 if (len > t->be->appsession_len) {
3801 len = t->be->appsession_len;
3802 }
3803
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]3804 if (t->be->options2 & PR_O2_AS_REQL) {
3805 /* request-learn option is enabled : store the sessid in the session for future use */
3806 if (t->sessid != NULL) {
3807 /* free previously allocated memory as we don't need the session id found in the URL anymore */
3808 pool_free2(apools.sessid, t->sessid);
3809 }
3810
3811 if ((t->sessid = pool_alloc2(apools.sessid)) == NULL) {
3812 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
3813 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
3814 return;
3815 }
3816
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3817 memcpy(t->sessid, buf, len);
3818 t->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]3819 }
3820
3821 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
3822 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
3823 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
3824 return;
3825 }
3826
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3827 memcpy(sessid_temp, buf, len);
3828 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]3829
3830 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
3831 /* free previously allocated memory */
3832 pool_free2(apools.sessid, sessid_temp);
3833
3834 if (asession != NULL) {
3835 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
3836 if (!(t->be->options2 & PR_O2_AS_REQL))
3837 asession->request_count++;
3838
3839 if (asession->serverid != NULL) {
3840 struct server *srv = t->be->srv;
3841 while (srv) {
3842 if (strcmp(srv->id, asession->serverid) == 0) {
3843 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
3844 /* we found the server and it's usable */
3845 txn->flags &= ~TX_CK_MASK;
3846 txn->flags |= TX_CK_VALID;
3847 t->flags |= SN_DIRECT | SN_ASSIGNED;
3848 t->srv = srv;
3849 break;
3850 } else {
3851 txn->flags &= ~TX_CK_MASK;
3852 txn->flags |= TX_CK_DOWN;
3853 }
3854 }
3855 srv = srv->next;
3856 }
3857 }
3858 }
3859}
3860
3861/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3862 * Manage client-side cookie. It can impact performance by about 2% so it is
3863 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3864 */
3865void manage_client_side_cookies(struct session *t, struct buffer *req)
3866{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3867 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3868 char *p1, *p2, *p3, *p4;
3869 char *del_colon, *del_cookie, *colon;
3870 int app_cookies;
3871
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3872 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3873 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3874
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3875 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3876 * we start with the start line.
3877 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]3878 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3879 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3880
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3881 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3882 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3883 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3884
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3885 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3886 cur_ptr = cur_next;
3887 cur_end = cur_ptr + cur_hdr->len;
3888 cur_next = cur_end + cur_hdr->cr + 1;
3889
3890 /* We have one full header between cur_ptr and cur_end, and the
3891 * next header starts at cur_next. We're only interested in
3892 * "Cookie:" headers.
3893 */
3894
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3895 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
3896 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3897 old_idx = cur_idx;
3898 continue;
3899 }
3900
3901 /* Now look for cookies. Conforming to RFC2109, we have to support
3902 * attributes whose name begin with a '$', and associate them with
3903 * the right cookie, if we want to delete this cookie.
3904 * So there are 3 cases for each cookie read :
3905 * 1) it's a special attribute, beginning with a '$' : ignore it.
3906 * 2) it's a server id cookie that we *MAY* want to delete : save
3907 * some pointers on it (last semi-colon, beginning of cookie...)
3908 * 3) it's an application cookie : we *MAY* have to delete a previous
3909 * "special" cookie.
3910 * At the end of loop, if a "special" cookie remains, we may have to
3911 * remove it. If no application cookie persists in the header, we
3912 * *MUST* delete it
3913 */
3914
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3915 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3916
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3917 /* del_cookie == NULL => nothing to be deleted */
3918 del_colon = del_cookie = NULL;
3919 app_cookies = 0;
3920
3921 while (p1 < cur_end) {
3922 /* skip spaces and colons, but keep an eye on these ones */
3923 while (p1 < cur_end) {
3924 if (*p1 == ';' || *p1 == ',')
3925 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3926 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3927 break;
3928 p1++;
3929 }
3930
3931 if (p1 == cur_end)
3932 break;
3933
3934 /* p1 is at the beginning of the cookie name */
3935 p2 = p1;
3936 while (p2 < cur_end && *p2 != '=')
3937 p2++;
3938
3939 if (p2 == cur_end)
3940 break;
3941
3942 p3 = p2 + 1; /* skips the '=' sign */
3943 if (p3 == cur_end)
3944 break;
3945
3946 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3947 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3948 p4++;
3949
3950 /* here, we have the cookie name between p1 and p2,
3951 * and its value between p3 and p4.
3952 * we can process it :
3953 *
3954 * Cookie: NAME=VALUE;
3955 * | || || |
3956 * | || || +--> p4
3957 * | || |+-------> p3
3958 * | || +--------> p2
3959 * | |+------------> p1
3960 * | +-------------> colon
3961 * +--------------------> cur_ptr
3962 */
3963
3964 if (*p1 == '$') {
3965 /* skip this one */
3966 }
3967 else {
3968 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3969 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3970 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3971 (p4 - p1 >= t->fe->capture_namelen) &&
3972 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3973 int log_len = p4 - p1;
3974
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3975 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3976 Alert("HTTP logging : out of memory.\n");
3977 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3978 if (log_len > t->fe->capture_len)
3979 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3980 memcpy(txn->cli_cookie, p1, log_len);
3981 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3982 }
3983 }
3984
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3985 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3986 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3987 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3988 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3989 char *delim;
3990
3991 /* if we're in cookie prefix mode, we'll search the delimitor so that we
3992 * have the server ID betweek p3 and delim, and the original cookie between
3993 * delim+1 and p4. Otherwise, delim==p4 :
3994 *
3995 * Cookie: NAME=SRV~VALUE;
3996 * | || || | |
3997 * | || || | +--> p4
3998 * | || || +--------> delim
3999 * | || |+-----------> p3
4000 * | || +------------> p2
4001 * | |+----------------> p1
4002 * | +-----------------> colon
4003 * +------------------------> cur_ptr
4004 */
4005
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4006 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4007 for (delim = p3; delim < p4; delim++)
4008 if (*delim == COOKIE_DELIM)
4009 break;
4010 }
4011 else
4012 delim = p4;
4013
4014
4015 /* Here, we'll look for the first running server which supports the cookie.
4016 * This allows to share a same cookie between several servers, for example
4017 * to dedicate backup servers to specific servers only.
4018 * However, to prevent clients from sticking to cookie-less backup server
4019 * when they have incidentely learned an empty cookie, we simply ignore
4020 * empty cookies and mark them as invalid.
4021 */
4022 if (delim == p3)
4023 srv = NULL;
4024
4025 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]4026 if (srv->cookie && (srv->cklen == delim - p3) &&
4027 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4028 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4029 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4030 txn->flags &= ~TX_CK_MASK;
4031 txn->flags |= TX_CK_VALID;
4032 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4033 t->srv = srv;
4034 break;
4035 } else {
4036 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4037 txn->flags &= ~TX_CK_MASK;
4038 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4039 }
4040 }
4041 srv = srv->next;
4042 }
4043
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4044 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4045 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4046 txn->flags &= ~TX_CK_MASK;
4047 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4048 }
4049
4050 /* depending on the cookie mode, we may have to either :
4051 * - delete the complete cookie if we're in insert+indirect mode, so that
4052 * the server never sees it ;
4053 * - remove the server id from the cookie value, and tag the cookie as an
4054 * application cookie so that it does not get accidentely removed later,
4055 * if we're in cookie prefix mode
4056 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4057 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4058 int delta; /* negative */
4059
4060 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
4061 p4 += delta;
4062 cur_end += delta;
4063 cur_next += delta;
4064 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4065 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4066
4067 del_cookie = del_colon = NULL;
4068 app_cookies++; /* protect the header from deletion */
4069 }
4070 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4071 (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]4072 del_cookie = p1;
4073 del_colon = colon;
4074 }
4075 } else {
4076 /* now we know that we must keep this cookie since it's
4077 * not ours. But if we wanted to delete our cookie
4078 * earlier, we cannot remove the complete header, but we
4079 * can remove the previous block itself.
4080 */
4081 app_cookies++;
4082
4083 if (del_cookie != NULL) {
4084 int delta; /* negative */
4085
4086 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
4087 p4 += delta;
4088 cur_end += delta;
4089 cur_next += delta;
4090 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4091 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4092 del_cookie = del_colon = NULL;
4093 }
4094 }
4095
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4096 if (t->be->appsession_name != NULL) {
4097 int cmp_len, value_len;
4098 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4099
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4100 if (t->be->options2 & PR_O2_AS_PFX) {
4101 cmp_len = MIN(p4 - p1, t->be->appsession_name_len);
4102 value_begin = p1 + t->be->appsession_name_len;
4103 value_len = p4 - p1 - t->be->appsession_name_len;
4104 } else {
4105 cmp_len = p2 - p1;
4106 value_begin = p3;
4107 value_len = p4 - p3;
4108 }
4109
4110 /* let's see if the cookie is our appcookie */
4111 if (memcmp(p1, t->be->appsession_name, cmp_len) == 0) {
4112 /* Cool... it's the right one */
4113 manage_client_side_appsession(t, value_begin, value_len);
4114 }
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4115#if defined(DEBUG_HASH)
4116 Alert("manage_client_side_cookies\n");
4117 appsession_hash_dump(&(t->be->htbl_proxy));
4118#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4119 }/* end if ((t->proxy->appsession_name != NULL) ... */
4120 }
4121
4122 /* we'll have to look for another cookie ... */
4123 p1 = p4;
4124 } /* while (p1 < cur_end) */
4125
4126 /* There's no more cookie on this line.
4127 * We may have marked the last one(s) for deletion.
4128 * We must do this now in two ways :
4129 * - if there is no app cookie, we simply delete the header ;
4130 * - if there are app cookies, we must delete the end of the
4131 * string properly, including the colon/semi-colon before
4132 * the cookie name.
4133 */
4134 if (del_cookie != NULL) {
4135 int delta;
4136 if (app_cookies) {
4137 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
4138 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4139 cur_hdr->len += delta;
4140 } else {
4141 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4142
4143 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4144 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4145 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4146 cur_hdr->len = 0;
4147 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]4148 cur_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4149 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4150 }
4151
4152 /* keep the link from this header to next one */
4153 old_idx = cur_idx;
4154 } /* end of cookie processing on this header */
4155}
4156
4157
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4158/* Iterate the same filter through all response headers contained in <rtr>.
4159 * Returns 1 if this filter can be stopped upon return, otherwise 0.
4160 */
4161int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4162{
4163 char term;
4164 char *cur_ptr, *cur_end, *cur_next;
4165 int cur_idx, old_idx, last_hdr;
4166 struct http_txn *txn = &t->txn;
4167 struct hdr_idx_elem *cur_hdr;
4168 int len, delta;
4169
4170 last_hdr = 0;
4171
4172 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4173 old_idx = 0;
4174
4175 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4176 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4177 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4178 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4179 (exp->action == ACT_ALLOW ||
4180 exp->action == ACT_DENY))
4181 return 0;
4182
4183 cur_idx = txn->hdr_idx.v[old_idx].next;
4184 if (!cur_idx)
4185 break;
4186
4187 cur_hdr = &txn->hdr_idx.v[cur_idx];
4188 cur_ptr = cur_next;
4189 cur_end = cur_ptr + cur_hdr->len;
4190 cur_next = cur_end + cur_hdr->cr + 1;
4191
4192 /* Now we have one header between cur_ptr and cur_end,
4193 * and the next header starts at cur_next.
4194 */
4195
4196 /* The annoying part is that pattern matching needs
4197 * that we modify the contents to null-terminate all
4198 * strings before testing them.
4199 */
4200
4201 term = *cur_end;
4202 *cur_end = '\0';
4203
4204 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4205 switch (exp->action) {
4206 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4207 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4208 last_hdr = 1;
4209 break;
4210
4211 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4212 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4213 last_hdr = 1;
4214 break;
4215
4216 case ACT_REPLACE:
4217 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4218 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4219 /* FIXME: if the user adds a newline in the replacement, the
4220 * index will not be recalculated for now, and the new line
4221 * will not be counted as a new header.
4222 */
4223
4224 cur_end += delta;
4225 cur_next += delta;
4226 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4227 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4228 break;
4229
4230 case ACT_REMOVE:
4231 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4232 cur_next += delta;
4233
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4234 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4235 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4236 txn->hdr_idx.used--;
4237 cur_hdr->len = 0;
4238 cur_end = NULL; /* null-term has been rewritten */
4239 break;
4240
4241 }
4242 }
4243 if (cur_end)
4244 *cur_end = term; /* restore the string terminator */
4245
4246 /* keep the link from this header to next one in case of later
4247 * removal of next header.
4248 */
4249 old_idx = cur_idx;
4250 }
4251 return 0;
4252}
4253
4254
4255/* Apply the filter to the status line in the response buffer <rtr>.
4256 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4257 * or -1 if a replacement resulted in an invalid status line.
4258 */
4259int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4260{
4261 char term;
4262 char *cur_ptr, *cur_end;
4263 int done;
4264 struct http_txn *txn = &t->txn;
4265 int len, delta;
4266
4267
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4268 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4269 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4270 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4271 (exp->action == ACT_ALLOW ||
4272 exp->action == ACT_DENY))
4273 return 0;
4274 else if (exp->action == ACT_REMOVE)
4275 return 0;
4276
4277 done = 0;
4278
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4279 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4280 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4281
4282 /* Now we have the status line between cur_ptr and cur_end */
4283
4284 /* The annoying part is that pattern matching needs
4285 * that we modify the contents to null-terminate all
4286 * strings before testing them.
4287 */
4288
4289 term = *cur_end;
4290 *cur_end = '\0';
4291
4292 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4293 switch (exp->action) {
4294 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4295 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4296 done = 1;
4297 break;
4298
4299 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4300 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4301 done = 1;
4302 break;
4303
4304 case ACT_REPLACE:
4305 *cur_end = term; /* restore the string terminator */
4306 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4307 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4308 /* FIXME: if the user adds a newline in the replacement, the
4309 * index will not be recalculated for now, and the new line
4310 * will not be counted as a new header.
4311 */
4312
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4313 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4314 cur_end += delta;
4315
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4316 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4317 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4318 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4319 cur_ptr, cur_end + 1,
4320 NULL, NULL);
4321 if (unlikely(!cur_end))
4322 return -1;
4323
4324 /* we have a full respnse and we know that we have either a CR
4325 * or an LF at <ptr>.
4326 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4327 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]4328 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4329 /* there is no point trying this regex on headers */
4330 return 1;
4331 }
4332 }
4333 *cur_end = term; /* restore the string terminator */
4334 return done;
4335}
4336
4337
4338
4339/*
4340 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4341 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4342 * unparsable response.
4343 */
4344int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4345{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4346 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4347 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4348 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4349 int ret;
4350
4351 /*
4352 * The interleaving of transformations and verdicts
4353 * makes it difficult to decide to continue or stop
4354 * the evaluation.
4355 */
4356
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4357 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4358 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4359 exp->action == ACT_PASS)) {
4360 exp = exp->next;
4361 continue;
4362 }
4363
4364 /* Apply the filter to the status line. */
4365 ret = apply_filter_to_sts_line(t, rtr, exp);
4366 if (unlikely(ret < 0))
4367 return -1;
4368
4369 if (likely(ret == 0)) {
4370 /* The filter did not match the response, it can be
4371 * iterated through all headers.
4372 */
4373 apply_filter_to_resp_headers(t, rtr, exp);
4374 }
4375 exp = exp->next;
4376 }
4377 return 0;
4378}
4379
4380
4381
4382/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]4383 * Manage server-side cookies. It can impact performance by about 2% so it is
4384 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4385 */
4386void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4387{
4388 struct http_txn *txn = &t->txn;
4389 char *p1, *p2, *p3, *p4;
4390
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4391 char *cur_ptr, *cur_end, *cur_next;
4392 int cur_idx, old_idx, delta;
4393
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4394 /* Iterate through the headers.
4395 * we start with the start line.
4396 */
4397 old_idx = 0;
4398 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4399
4400 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4401 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4402 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4403
4404 cur_hdr = &txn->hdr_idx.v[cur_idx];
4405 cur_ptr = cur_next;
4406 cur_end = cur_ptr + cur_hdr->len;
4407 cur_next = cur_end + cur_hdr->cr + 1;
4408
4409 /* We have one full header between cur_ptr and cur_end, and the
4410 * next header starts at cur_next. We're only interested in
4411 * "Cookie:" headers.
4412 */
4413
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4414 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4415 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4416 old_idx = cur_idx;
4417 continue;
4418 }
4419
4420 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4421 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4422
4423
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4424 /* maybe we only wanted to see if there was a set-cookie. Note that
4425 * the cookie capture is declared in the fronend.
4426 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4427 if (t->be->cookie_name == NULL &&
4428 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4429 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4430 return;
4431
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4432 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4433
4434 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4435 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4436 break;
4437
4438 /* p1 is at the beginning of the cookie name */
4439 p2 = p1;
4440
4441 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4442 p2++;
4443
4444 if (p2 == cur_end || *p2 == ';') /* next cookie */
4445 break;
4446
4447 p3 = p2 + 1; /* skip the '=' sign */
4448 if (p3 == cur_end)
4449 break;
4450
4451 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4452 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4453 p4++;
4454
4455 /* here, we have the cookie name between p1 and p2,
4456 * and its value between p3 and p4.
4457 * we can process it.
4458 */
4459
4460 /* first, let's see if we want to capture it */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4461 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4462 txn->srv_cookie == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4463 (p4 - p1 >= t->fe->capture_namelen) &&
4464 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4465 int log_len = p4 - p1;
4466
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4467 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4468 Alert("HTTP logging : out of memory.\n");
4469 }
4470
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4471 if (log_len > t->fe->capture_len)
4472 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4473 memcpy(txn->srv_cookie, p1, log_len);
4474 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4475 }
4476
4477 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4478 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4479 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4480 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4481 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4482
4483 /* If the cookie is in insert mode on a known server, we'll delete
4484 * this occurrence because we'll insert another one later.
4485 * We'll delete it too if the "indirect" option is set and we're in
4486 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4487 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4488 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4489 /* this header must be deleted */
4490 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4491 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4492 txn->hdr_idx.used--;
4493 cur_hdr->len = 0;
4494 cur_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4495 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4496
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4497 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4498 }
4499 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4500 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4501 /* replace bytes p3->p4 with the cookie name associated
4502 * with this server since we know it.
4503 */
4504 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4505 cur_hdr->len += delta;
4506 cur_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4507 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4508
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4509 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4510 }
4511 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4512 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4513 /* insert the cookie name associated with this server
4514 * before existing cookie, and insert a delimitor between them..
4515 */
4516 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4517 cur_hdr->len += delta;
4518 cur_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4519 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4520
4521 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4522 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4523 }
4524 }
4525 /* next, let's see if the cookie is our appcookie */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4526 else if (t->be->appsession_name != NULL) {
4527 int cmp_len, value_len;
4528 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4529
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4530 if (t->be->options2 & PR_O2_AS_PFX) {
4531 cmp_len = MIN(p4 - p1, t->be->appsession_name_len);
4532 value_begin = p1 + t->be->appsession_name_len;
4533 value_len = MIN(t->be->appsession_len, p4 - p1 - t->be->appsession_name_len);
4534 } else {
4535 cmp_len = p2 - p1;
4536 value_begin = p3;
4537 value_len = MIN(t->be->appsession_len, p4 - p3);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]4538 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4539
4540 if (memcmp(p1, t->be->appsession_name, cmp_len) == 0) {
4541 /* Cool... it's the right one */
4542 if (t->sessid != NULL) {
4543 /* free previously allocated memory as we don't need it anymore */
4544 pool_free2(apools.sessid, t->sessid);
4545 }
4546 /* Store the sessid in the session for future use */
4547 if ((t->sessid = pool_alloc2(apools.sessid)) == NULL) {
4548 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4549 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4550 return;
4551 }
4552 memcpy(t->sessid, value_begin, value_len);
4553 t->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4554 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4555 } /* end if ((t->be->appsession_name != NULL) ... */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4556 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4557 } /* we're now at the end of the cookie value */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4558 /* keep the link from this header to next one */
4559 old_idx = cur_idx;
4560 } /* end of cookie processing on this header */
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]4561
4562 if (t->sessid != NULL) {
4563 appsess *asession = NULL;
4564 /* only do insert, if lookup fails */
4565 asession = appsession_hash_lookup(&(t->be->htbl_proxy), t->sessid);
4566 if (asession == NULL) {
4567 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
4568 Alert("Not enough Memory process_srv():asession:calloc().\n");
4569 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4570 return;
4571 }
4572 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
4573 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4574 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4575 return;
4576 }
4577 memcpy(asession->sessid, t->sessid, t->be->appsession_len);
4578 asession->sessid[t->be->appsession_len] = 0;
4579
4580 size_t server_id_len = strlen(t->srv->id) + 1;
4581 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
4582 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4583 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4584 return;
4585 }
4586 asession->serverid[0] = '\0';
4587 memcpy(asession->serverid, t->srv->id, server_id_len);
4588
4589 asession->request_count = 0;
4590 appsession_hash_insert(&(t->be->htbl_proxy), asession);
4591 }
4592
4593 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
4594 asession->request_count++;
4595 }
4596
4597#if defined(DEBUG_HASH)
4598 Alert("manage_server_side_cookies\n");
4599 appsession_hash_dump(&(t->be->htbl_proxy));
4600#endif
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4601}
4602
4603
4604
4605/*
4606 * Check if response is cacheable or not. Updates t->flags.
4607 */
4608void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4609{
4610 struct http_txn *txn = &t->txn;
4611 char *p1, *p2;
4612
4613 char *cur_ptr, *cur_end, *cur_next;
4614 int cur_idx;
4615
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]4616 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4617 return;
4618
4619 /* Iterate through the headers.
4620 * we start with the start line.
4621 */
4622 cur_idx = 0;
4623 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4624
4625 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4626 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4627 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4628
4629 cur_hdr = &txn->hdr_idx.v[cur_idx];
4630 cur_ptr = cur_next;
4631 cur_end = cur_ptr + cur_hdr->len;
4632 cur_next = cur_end + cur_hdr->cr + 1;
4633
4634 /* We have one full header between cur_ptr and cur_end, and the
4635 * next header starts at cur_next. We're only interested in
4636 * "Cookie:" headers.
4637 */
4638
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4639 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4640 if (val) {
4641 if ((cur_end - (cur_ptr + val) >= 8) &&
4642 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4643 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4644 return;
4645 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4646 }
4647
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4648 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4649 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4650 continue;
4651
4652 /* OK, right now we know we have a cache-control header at cur_ptr */
4653
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4654 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4655
4656 if (p1 >= cur_end) /* no more info */
4657 continue;
4658
4659 /* p1 is at the beginning of the value */
4660 p2 = p1;
4661
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4662 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4663 p2++;
4664
4665 /* we have a complete value between p1 and p2 */
4666 if (p2 < cur_end && *p2 == '=') {
4667 /* we have something of the form no-cache="set-cookie" */
4668 if ((cur_end - p1 >= 21) &&
4669 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4670 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4671 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4672 continue;
4673 }
4674
4675 /* OK, so we know that either p2 points to the end of string or to a comma */
4676 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4677 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4678 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4679 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4680 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4681 return;
4682 }
4683
4684 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4685 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4686 continue;
4687 }
4688 }
4689}
4690
4691
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4692/*
4693 * Try to retrieve a known appsession in the URI, then the associated server.
4694 * If the server is found, it's assigned to the session.
4695 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4696void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4697{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4698 char *end_params, *first_param, *cur_param, *next_param;
4699 char separator;
4700 int value_len;
4701
4702 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4703
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4704 if (t->be->appsession_name == NULL ||
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4705 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4706 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4707 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4708
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4709 first_param = NULL;
4710 switch (mode) {
4711 case PR_O2_AS_M_PP:
4712 first_param = memchr(begin, ';', len);
4713 break;
4714 case PR_O2_AS_M_QS:
4715 first_param = memchr(begin, '?', len);
4716 break;
4717 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4718
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4719 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4720 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4721 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4722
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4723 switch (mode) {
4724 case PR_O2_AS_M_PP:
4725 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
4726 end_params = (char *) begin + len;
4727 }
4728 separator = ';';
4729 break;
4730 case PR_O2_AS_M_QS:
4731 end_params = (char *) begin + len;
4732 separator = '&';
4733 break;
4734 default:
4735 /* unknown mode, shouldn't happen */
4736 return;
4737 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4738
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4739 cur_param = next_param = end_params;
4740 while (cur_param > first_param) {
4741 cur_param--;
4742 if ((cur_param[0] == separator) || (cur_param == first_param)) {
4743 /* let's see if this is the appsession parameter */
4744 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
4745 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
4746 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
4747 /* Cool... it's the right one */
4748 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
4749 value_len = MIN(t->be->appsession_len, next_param - cur_param);
4750 if (value_len > 0) {
4751 manage_client_side_appsession(t, cur_param, value_len);
4752 }
4753 break;
4754 }
4755 next_param = cur_param;
4756 }
4757 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4758#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4759 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4760 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4761#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4762}
4763
4764
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4765/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4766 * In a GET or HEAD request, check if the requested URI matches the stats uri
4767 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4768 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4769 * 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]4770 * t->be->uri_auth field is valid. An HTTP/401 response may be sent, or
Willy Tarreaub0c9bc42009-10-04 15:56:38 +0200[diff] [blame]4771 * the stats I/O handler will be registered to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4772 *
4773 * Returns 1 if the session's state changes, otherwise 0.
4774 */
4775int stats_check_uri_auth(struct session *t, struct proxy *backend)
4776{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4777 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4778 struct uri_auth *uri_auth = backend->uri_auth;
4779 struct user_auth *user;
4780 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4781 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4782
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4783 memset(&t->data_ctx.stats, 0, sizeof(t->data_ctx.stats));
4784
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4785 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4786 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4787 return 0;
4788
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4789 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4790
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4791 /* the URI is in h */
4792 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4793 return 0;
4794
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4795 h += uri_auth->uri_len;
4796 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
4797 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4798 t->data_ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4799 break;
4800 }
4801 h++;
4802 }
4803
4804 if (uri_auth->refresh) {
4805 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4806 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
4807 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4808 t->data_ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4809 break;
4810 }
4811 h++;
4812 }
4813 }
4814
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4815 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4816 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
4817 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4818 t->data_ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4819 break;
4820 }
4821 h++;
4822 }
4823
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4824 t->data_ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
4825
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4826 /* we are in front of a interceptable URI. Let's check
4827 * if there's an authentication and if it's valid.
4828 */
4829 user = uri_auth->users;
4830 if (!user) {
4831 /* no user auth required, it's OK */
4832 authenticated = 1;
4833 } else {
4834 authenticated = 0;
4835
4836 /* a user list is defined, we have to check.
4837 * skip 21 chars for "Authorization: Basic ".
4838 */
4839
4840 /* FIXME: this should move to an earlier place */
4841 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4842 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
4843 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4844 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4845 if (len > 14 &&
4846 !strncasecmp("Authorization:", h, 14)) {
Krzysztof Piotr Oledzki6f61b212009-10-04 23:34:15 +0200[diff] [blame]4847 chunk_initlen(&txn->auth_hdr, h, 0, len);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4848 break;
4849 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4850 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4851 }
4852
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4853 if (txn->auth_hdr.len < 21 ||
4854 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4855 user = NULL;
4856
4857 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4858 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
4859 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4860 user->user_pwd, user->user_len)) {
4861 authenticated = 1;
4862 break;
4863 }
4864 user = user->next;
4865 }
4866 }
4867
4868 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4869 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4870
4871 /* no need to go further */
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]4872 sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
4873 chunk_initlen(&msg, trash, sizeof(trash), strlen(trash));
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4874 txn->status = 401;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]4875 stream_int_retnclose(t->req->prod, &msg);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]4876 t->req->analysers = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4877 if (!(t->flags & SN_ERR_MASK))
4878 t->flags |= SN_ERR_PRXCOND;
4879 if (!(t->flags & SN_FINST_MASK))
4880 t->flags |= SN_FINST_R;
4881 return 1;
4882 }
4883
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4884 /* The request is valid, the user is authenticated. Let's start sending
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4885 * data.
4886 */
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]4887 t->logs.tv_request = now;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4888 t->data_source = DATA_SRC_STATS;
4889 t->data_state = DATA_ST_INIT;
Willy Tarreau91e99932008-06-30 07:51:00 +0200[diff] [blame]4890 t->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub0c9bc42009-10-04 15:56:38 +0200[diff] [blame]4891 stream_int_register_handler(t->rep->prod, http_stats_io_handler);
4892 t->rep->prod->private = t;
4893 t->rep->prod->st0 = t->rep->prod->st1 = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4894 return 1;
4895}
4896
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4897/*
4898 * Capture a bad request or response and archive it in the proxy's structure.
4899 */
4900void http_capture_bad_message(struct error_snapshot *es, struct session *s,
4901 struct buffer *buf, struct http_msg *msg,
4902 struct proxy *other_end)
4903{
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4904 es->len = buf->r - (buf->data + msg->som);
4905 memcpy(es->buf, buf->data + msg->som, MIN(es->len, sizeof(es->buf)));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4906 if (msg->err_pos >= 0)
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4907 es->pos = msg->err_pos - msg->som;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4908 else
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4909 es->pos = buf->lr - (buf->data + msg->som);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4910 es->when = date; // user-visible date
4911 es->sid = s->uniq_id;
4912 es->srv = s->srv;
4913 es->oe = other_end;
4914 es->src = s->cli_addr;
4915}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4916
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4917/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4918 * Print a debug line with a header
4919 */
4920void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
4921{
4922 int len, max;
4923 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4924 dir, (unsigned short)t->req->prod->fd, (unsigned short)t->req->cons->fd);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4925 max = end - start;
4926 UBOUND(max, sizeof(trash) - len - 1);
4927 len += strlcpy2(trash + len, start, max + 1);
4928 trash[len++] = '\n';
4929 write(1, trash, len);
4930}
4931
4932
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4933/************************************************************************/
4934/* The code below is dedicated to ACL parsing and matching */
4935/************************************************************************/
4936
4937
4938
4939
4940/* 1. Check on METHOD
4941 * We use the pre-parsed method if it is known, and store its number as an
4942 * integer. If it is unknown, we use the pointer and the length.
4943 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4944static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4945{
4946 int len, meth;
4947
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4948 len = strlen(*text);
4949 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4950
4951 pattern->val.i = meth;
4952 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4953 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4954 if (!pattern->ptr.str)
4955 return 0;
4956 pattern->len = len;
4957 }
4958 return 1;
4959}
4960
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4961static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4962acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
4963 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4964{
4965 int meth;
4966 struct http_txn *txn = l7;
4967
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4968 if (!txn)
4969 return 0;
4970
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4971 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4972 return 0;
4973
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4974 meth = txn->meth;
4975 test->i = meth;
4976 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4977 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4978 /* ensure the indexes are not affected */
4979 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4980 test->len = txn->req.sl.rq.m_l;
4981 test->ptr = txn->req.sol;
4982 }
4983 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4984 return 1;
4985}
4986
4987static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
4988{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4989 int icase;
4990
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4991 if (test->i != pattern->val.i)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4992 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4993
4994 if (test->i != HTTP_METH_OTHER)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4995 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4996
4997 /* Other method, we must compare the strings */
4998 if (pattern->len != test->len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4999 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]5000
5001 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
5002 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
5003 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]5004 return ACL_PAT_FAIL;
5005 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5006}
5007
5008/* 2. Check on Request/Status Version
5009 * We simply compare strings here.
5010 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5011static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5012{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5013 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5014 if (!pattern->ptr.str)
5015 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5016 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5017 return 1;
5018}
5019
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5020static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5021acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
5022 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5023{
5024 struct http_txn *txn = l7;
5025 char *ptr;
5026 int len;
5027
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5028 if (!txn)
5029 return 0;
5030
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5031 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5032 return 0;
5033
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5034 len = txn->req.sl.rq.v_l;
5035 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
5036
5037 while ((len-- > 0) && (*ptr++ != '/'));
5038 if (len <= 0)
5039 return 0;
5040
5041 test->ptr = ptr;
5042 test->len = len;
5043
5044 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5045 return 1;
5046}
5047
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5048static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5049acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
5050 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5051{
5052 struct http_txn *txn = l7;
5053 char *ptr;
5054 int len;
5055
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5056 if (!txn)
5057 return 0;
5058
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5059 if (txn->rsp.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5060 return 0;
5061
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5062 len = txn->rsp.sl.st.v_l;
5063 ptr = txn->rsp.sol;
5064
5065 while ((len-- > 0) && (*ptr++ != '/'));
5066 if (len <= 0)
5067 return 0;
5068
5069 test->ptr = ptr;
5070 test->len = len;
5071
5072 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5073 return 1;
5074}
5075
5076/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5077static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5078acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
5079 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5080{
5081 struct http_txn *txn = l7;
5082 char *ptr;
5083 int len;
5084
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5085 if (!txn)
5086 return 0;
5087
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5088 if (txn->rsp.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5089 return 0;
5090
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5091 len = txn->rsp.sl.st.c_l;
5092 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
5093
5094 test->i = __strl2ui(ptr, len);
5095 test->flags = ACL_TEST_F_VOL_1ST;
5096 return 1;
5097}
5098
5099/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5100static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5101acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
5102 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5103{
5104 struct http_txn *txn = l7;
5105
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5106 if (!txn)
5107 return 0;
5108
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5109 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5110 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5111
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5112 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5113 /* ensure the indexes are not affected */
5114 return 0;
5115
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5116 test->len = txn->req.sl.rq.u_l;
5117 test->ptr = txn->req.sol + txn->req.sl.rq.u;
5118
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5119 /* we do not need to set READ_ONLY because the data is in a buffer */
5120 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5121 return 1;
5122}
5123
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5124static int
5125acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5126 struct acl_expr *expr, struct acl_test *test)
5127{
5128 struct http_txn *txn = l7;
5129
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5130 if (!txn)
5131 return 0;
5132
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5133 if (txn->req.msg_state < HTTP_MSG_BODY)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5134 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5135
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5136 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5137 /* ensure the indexes are not affected */
5138 return 0;
5139
5140 /* Parse HTTP request */
5141 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
5142 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
5143 test->i = AF_INET;
5144
5145 /*
5146 * If we are parsing url in frontend space, we prepare backend stage
5147 * to not parse again the same url ! optimization lazyness...
5148 */
5149 if (px->options & PR_O_HTTP_PROXY)
5150 l4->flags |= SN_ADDR_SET;
5151
5152 test->flags = ACL_TEST_F_READ_ONLY;
5153 return 1;
5154}
5155
5156static int
5157acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
5158 struct acl_expr *expr, struct acl_test *test)
5159{
5160 struct http_txn *txn = l7;
5161
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5162 if (!txn)
5163 return 0;
5164
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5165 if (txn->req.msg_state < HTTP_MSG_BODY)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5166 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5167
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5168 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5169 /* ensure the indexes are not affected */
5170 return 0;
5171
5172 /* Same optimization as url_ip */
5173 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
5174 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
5175
5176 if (px->options & PR_O_HTTP_PROXY)
5177 l4->flags |= SN_ADDR_SET;
5178
5179 test->flags = ACL_TEST_F_READ_ONLY;
5180 return 1;
5181}
5182
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5183/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
5184 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
5185 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5186static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5187acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5188 struct acl_expr *expr, struct acl_test *test)
5189{
5190 struct http_txn *txn = l7;
5191 struct hdr_idx *idx = &txn->hdr_idx;
5192 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5193
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5194 if (!txn)
5195 return 0;
5196
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5197 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5198 /* search for header from the beginning */
5199 ctx->idx = 0;
5200
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5201 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5202 test->flags |= ACL_TEST_F_FETCH_MORE;
5203 test->flags |= ACL_TEST_F_VOL_HDR;
5204 test->len = ctx->vlen;
5205 test->ptr = (char *)ctx->line + ctx->val;
5206 return 1;
5207 }
5208
5209 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5210 test->flags |= ACL_TEST_F_VOL_HDR;
5211 return 0;
5212}
5213
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5214static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5215acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
5216 struct acl_expr *expr, struct acl_test *test)
5217{
5218 struct http_txn *txn = l7;
5219
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5220 if (!txn)
5221 return 0;
5222
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5223 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5224 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5225
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5226 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5227 /* ensure the indexes are not affected */
5228 return 0;
5229
5230 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
5231}
5232
5233static int
5234acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
5235 struct acl_expr *expr, struct acl_test *test)
5236{
5237 struct http_txn *txn = l7;
5238
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5239 if (!txn)
5240 return 0;
5241
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5242 if (txn->rsp.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5243 return 0;
5244
5245 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
5246}
5247
5248/* 6. Check on HTTP header count. The number of occurrences is returned.
5249 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5250 */
5251static int
5252acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5253 struct acl_expr *expr, struct acl_test *test)
5254{
5255 struct http_txn *txn = l7;
5256 struct hdr_idx *idx = &txn->hdr_idx;
5257 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5258 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5259
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5260 if (!txn)
5261 return 0;
5262
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5263 ctx.idx = 0;
5264 cnt = 0;
5265 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
5266 cnt++;
5267
5268 test->i = cnt;
5269 test->flags = ACL_TEST_F_VOL_HDR;
5270 return 1;
5271}
5272
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5273static int
5274acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5275 struct acl_expr *expr, struct acl_test *test)
5276{
5277 struct http_txn *txn = l7;
5278
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5279 if (!txn)
5280 return 0;
5281
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5282 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5283 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5284
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5285 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5286 /* ensure the indexes are not affected */
5287 return 0;
5288
5289 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
5290}
5291
5292static int
5293acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5294 struct acl_expr *expr, struct acl_test *test)
5295{
5296 struct http_txn *txn = l7;
5297
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5298 if (!txn)
5299 return 0;
5300
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5301 if (txn->rsp.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5302 return 0;
5303
5304 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
5305}
5306
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5307/* 7. Check on HTTP header's integer value. The integer value is returned.
5308 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5309 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5310 */
5311static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5312acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5313 struct acl_expr *expr, struct acl_test *test)
5314{
5315 struct http_txn *txn = l7;
5316 struct hdr_idx *idx = &txn->hdr_idx;
5317 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5318
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5319 if (!txn)
5320 return 0;
5321
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5322 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5323 /* search for header from the beginning */
5324 ctx->idx = 0;
5325
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5326 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5327 test->flags |= ACL_TEST_F_FETCH_MORE;
5328 test->flags |= ACL_TEST_F_VOL_HDR;
5329 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
5330 return 1;
5331 }
5332
5333 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5334 test->flags |= ACL_TEST_F_VOL_HDR;
5335 return 0;
5336}
5337
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5338static int
5339acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5340 struct acl_expr *expr, struct acl_test *test)
5341{
5342 struct http_txn *txn = l7;
5343
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5344 if (!txn)
5345 return 0;
5346
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5347 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5348 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5349
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5350 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5351 /* ensure the indexes are not affected */
5352 return 0;
5353
5354 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
5355}
5356
5357static int
5358acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5359 struct acl_expr *expr, struct acl_test *test)
5360{
5361 struct http_txn *txn = l7;
5362
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5363 if (!txn)
5364 return 0;
5365
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5366 if (txn->rsp.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5367 return 0;
5368
5369 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
5370}
5371
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]5372/* 7. Check on HTTP header's IPv4 address value. The IPv4 address is returned.
5373 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5374 */
5375static int
5376acl_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, char *sol,
5377 struct acl_expr *expr, struct acl_test *test)
5378{
5379 struct http_txn *txn = l7;
5380 struct hdr_idx *idx = &txn->hdr_idx;
5381 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
5382
5383 if (!txn)
5384 return 0;
5385
5386 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5387 /* search for header from the beginning */
5388 ctx->idx = 0;
5389
5390 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5391 test->flags |= ACL_TEST_F_FETCH_MORE;
5392 test->flags |= ACL_TEST_F_VOL_HDR;
5393 /* Same optimization as url_ip */
5394 memset(&l4->srv_addr.sin_addr, 0, sizeof(l4->srv_addr.sin_addr));
5395 url2ip((char *)ctx->line + ctx->val, &l4->srv_addr.sin_addr);
5396 test->ptr = (void *)&l4->srv_addr.sin_addr;
5397 test->i = AF_INET;
5398 return 1;
5399 }
5400
5401 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5402 test->flags |= ACL_TEST_F_VOL_HDR;
5403 return 0;
5404}
5405
5406static int
5407acl_fetch_chdr_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5408 struct acl_expr *expr, struct acl_test *test)
5409{
5410 struct http_txn *txn = l7;
5411
5412 if (!txn)
5413 return 0;
5414
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5415 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]5416 return 0;
5417
5418 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5419 /* ensure the indexes are not affected */
5420 return 0;
5421
5422 return acl_fetch_hdr_ip(px, l4, txn, txn->req.sol, expr, test);
5423}
5424
5425static int
5426acl_fetch_shdr_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5427 struct acl_expr *expr, struct acl_test *test)
5428{
5429 struct http_txn *txn = l7;
5430
5431 if (!txn)
5432 return 0;
5433
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5434 if (txn->rsp.msg_state < HTTP_MSG_BODY)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]5435 return 0;
5436
5437 return acl_fetch_hdr_ip(px, l4, txn, txn->rsp.sol, expr, test);
5438}
5439
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5440/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
5441 * the first '/' after the possible hostname, and ends before the possible '?'.
5442 */
5443static int
5444acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
5445 struct acl_expr *expr, struct acl_test *test)
5446{
5447 struct http_txn *txn = l7;
5448 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5449
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5450 if (!txn)
5451 return 0;
5452
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5453 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5454 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5455
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5456 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5457 /* ensure the indexes are not affected */
5458 return 0;
5459
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5460 end = txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
5461 ptr = http_get_path(txn);
5462 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5463 return 0;
5464
5465 /* OK, we got the '/' ! */
5466 test->ptr = ptr;
5467
5468 while (ptr < end && *ptr != '?')
5469 ptr++;
5470
5471 test->len = ptr - test->ptr;
5472
5473 /* we do not need to set READ_ONLY because the data is in a buffer */
5474 test->flags = ACL_TEST_F_VOL_1ST;
5475 return 1;
5476}
5477
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5478static int
5479acl_fetch_proto_http(struct proxy *px, struct session *s, void *l7, int dir,
5480 struct acl_expr *expr, struct acl_test *test)
5481{
5482 struct buffer *req = s->req;
5483 struct http_txn *txn = &s->txn;
5484 struct http_msg *msg = &txn->req;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5485
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5486 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
5487 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
5488 */
5489
5490 if (!s || !req)
5491 return 0;
5492
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5493 if (unlikely(msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5494 /* Already decoded as OK */
5495 test->flags |= ACL_TEST_F_SET_RES_PASS;
5496 return 1;
5497 }
5498
5499 /* Try to decode HTTP request */
5500 if (likely(req->lr < req->r))
5501 http_msg_analyzer(req, msg, &txn->hdr_idx);
5502
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5503 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5504 if ((msg->msg_state == HTTP_MSG_ERROR) || (req->flags & BF_FULL)) {
5505 test->flags |= ACL_TEST_F_SET_RES_FAIL;
5506 return 1;
5507 }
5508 /* wait for final state */
5509 test->flags |= ACL_TEST_F_MAY_CHANGE;
5510 return 0;
5511 }
5512
5513 /* OK we got a valid HTTP request. We have some minor preparation to
5514 * perform so that further checks can rely on HTTP tests.
5515 */
5516 msg->sol = req->data + msg->som;
5517 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
5518 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
5519 s->flags |= SN_REDIRECTABLE;
5520
5521 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(req, msg, txn)) {
5522 test->flags |= ACL_TEST_F_SET_RES_FAIL;
5523 return 1;
5524 }
5525
5526 test->flags |= ACL_TEST_F_SET_RES_PASS;
5527 return 1;
5528}
5529
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5530
5531/************************************************************************/
5532/* All supported keywords must be declared here. */
5533/************************************************************************/
5534
5535/* Note: must not be declared <const> as its list will be overwritten */
5536static struct acl_kw_list acl_kws = {{ },{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5537 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT },
5538
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5539 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT },
5540 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5541 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE },
5542 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5543
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5544 { "url", acl_parse_str, acl_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5545 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5546 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5547 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5548 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5549 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
5550 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5551 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE },
5552 { "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]5553
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5554 /* note: we should set hdr* to use ACL_USE_HDR_VOLATILE, and chdr* to use L7REQ_VOLATILE */
5555 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5556 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5557 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5558 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5559 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5560 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5561 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
5562 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int, ACL_USE_L7REQ_VOLATILE },
5563 { "hdr_val", acl_parse_int, acl_fetch_chdr_val,acl_match_int, ACL_USE_L7REQ_VOLATILE },
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]5564 { "hdr_ip", acl_parse_ip, acl_fetch_chdr_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE },
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5565
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5566 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str, ACL_USE_L7RTR_VOLATILE },
5567 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE },
5568 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE },
5569 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end, ACL_USE_L7RTR_VOLATILE },
5570 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE },
5571 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE },
5572 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE },
5573 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int, ACL_USE_L7RTR_VOLATILE },
5574 { "shdr_val", acl_parse_int, acl_fetch_shdr_val,acl_match_int, ACL_USE_L7RTR_VOLATILE },
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]5575 { "shdr_ip", acl_parse_ip, acl_fetch_shdr_ip, acl_match_ip, ACL_USE_L7RTR_VOLATILE },
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5576
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5577 { "path", acl_parse_str, acl_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5578 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5579 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5580 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5581 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5582 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5583 { "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]5584
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5585 { NULL, NULL, NULL, NULL },
5586
5587#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5588 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
5589 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
5590 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
5591 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
5592 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
5593 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
5594 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
5595
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5596 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
5597 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
5598 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
5599 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
5600 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
5601 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
5602 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
5603 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
5604
5605 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
5606 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
5607 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
5608 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
5609 { NULL, NULL, NULL, NULL },
5610#endif
5611}};
5612
5613
5614__attribute__((constructor))
5615static void __http_protocol_init(void)
5616{
5617 acl_register_keywords(&acl_kws);
5618}
5619
5620
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5621/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5622 * Local variables:
5623 * c-indent-level: 8
5624 * c-basic-offset: 8
5625 * End:
5626 */