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git01.mediatek.com / haproxy / d98cf93395fe5a982afc3eee66526057d49420da / . / src / proto_http.c
blob: 450921f3ccdf757775f9f17734f8345037f81dc0 [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>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]44#include <proto/checks.h>
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]45#include <proto/client.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]46#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]47#include <proto/fd.h>
48#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]49#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]50#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]51#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]52#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]54#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]56#include <proto/stream_interface.h>
Willy Tarreau2d212792008-08-27 21:41:35 +0200[diff] [blame]57#include <proto/stream_sock.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]58#include <proto/task.h>
59
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]60const char HTTP_100[] =
61 "HTTP/1.1 100 Continue\r\n\r\n";
62
63const struct chunk http_100_chunk = {
64 .str = (char *)&HTTP_100,
65 .len = sizeof(HTTP_100)-1
66};
67
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]68/* This is used by remote monitoring */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]69const char HTTP_200[] =
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]70 "HTTP/1.0 200 OK\r\n"
71 "Cache-Control: no-cache\r\n"
72 "Connection: close\r\n"
73 "Content-Type: text/html\r\n"
74 "\r\n"
75 "<html><body><h1>200 OK</h1>\nHAProxy: service ready.\n</body></html>\n";
76
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]77const struct chunk http_200_chunk = {
78 .str = (char *)&HTTP_200,
79 .len = sizeof(HTTP_200)-1
80};
81
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]82const char *HTTP_301 =
83 "HTTP/1.0 301 Moved Permantenly\r\n"
84 "Cache-Control: no-cache\r\n"
85 "Connection: close\r\n"
86 "Location: "; /* not terminated since it will be concatenated with the URL */
87
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]88const char *HTTP_302 =
89 "HTTP/1.0 302 Found\r\n"
90 "Cache-Control: no-cache\r\n"
91 "Connection: close\r\n"
92 "Location: "; /* not terminated since it will be concatenated with the URL */
93
94/* same as 302 except that the browser MUST retry with the GET method */
95const char *HTTP_303 =
96 "HTTP/1.0 303 See Other\r\n"
97 "Cache-Control: no-cache\r\n"
98 "Connection: close\r\n"
99 "Location: "; /* not terminated since it will be concatenated with the URL */
100
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]101/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
102const char *HTTP_401_fmt =
103 "HTTP/1.0 401 Unauthorized\r\n"
104 "Cache-Control: no-cache\r\n"
105 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]106 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]107 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
108 "\r\n"
109 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
110
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]111
112const int http_err_codes[HTTP_ERR_SIZE] = {
113 [HTTP_ERR_400] = 400,
114 [HTTP_ERR_403] = 403,
115 [HTTP_ERR_408] = 408,
116 [HTTP_ERR_500] = 500,
117 [HTTP_ERR_502] = 502,
118 [HTTP_ERR_503] = 503,
119 [HTTP_ERR_504] = 504,
120};
121
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]122static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]123 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]124 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]125 "Cache-Control: no-cache\r\n"
126 "Connection: close\r\n"
127 "Content-Type: text/html\r\n"
128 "\r\n"
129 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
130
131 [HTTP_ERR_403] =
132 "HTTP/1.0 403 Forbidden\r\n"
133 "Cache-Control: no-cache\r\n"
134 "Connection: close\r\n"
135 "Content-Type: text/html\r\n"
136 "\r\n"
137 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
138
139 [HTTP_ERR_408] =
140 "HTTP/1.0 408 Request Time-out\r\n"
141 "Cache-Control: no-cache\r\n"
142 "Connection: close\r\n"
143 "Content-Type: text/html\r\n"
144 "\r\n"
145 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
146
147 [HTTP_ERR_500] =
148 "HTTP/1.0 500 Server Error\r\n"
149 "Cache-Control: no-cache\r\n"
150 "Connection: close\r\n"
151 "Content-Type: text/html\r\n"
152 "\r\n"
153 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
154
155 [HTTP_ERR_502] =
156 "HTTP/1.0 502 Bad Gateway\r\n"
157 "Cache-Control: no-cache\r\n"
158 "Connection: close\r\n"
159 "Content-Type: text/html\r\n"
160 "\r\n"
161 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
162
163 [HTTP_ERR_503] =
164 "HTTP/1.0 503 Service Unavailable\r\n"
165 "Cache-Control: no-cache\r\n"
166 "Connection: close\r\n"
167 "Content-Type: text/html\r\n"
168 "\r\n"
169 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
170
171 [HTTP_ERR_504] =
172 "HTTP/1.0 504 Gateway Time-out\r\n"
173 "Cache-Control: no-cache\r\n"
174 "Connection: close\r\n"
175 "Content-Type: text/html\r\n"
176 "\r\n"
177 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
178
179};
180
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]181/* We must put the messages here since GCC cannot initialize consts depending
182 * on strlen().
183 */
184struct chunk http_err_chunks[HTTP_ERR_SIZE];
185
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]186#define FD_SETS_ARE_BITFIELDS
187#ifdef FD_SETS_ARE_BITFIELDS
188/*
189 * This map is used with all the FD_* macros to check whether a particular bit
190 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
191 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
192 * byte should be encoded. Be careful to always pass bytes from 0 to 255
193 * exclusively to the macros.
194 */
195fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
196fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
197
198#else
199#error "Check if your OS uses bitfields for fd_sets"
200#endif
201
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]202void init_proto_http()
203{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]204 int i;
205 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]206 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]207
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]208 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
209 if (!http_err_msgs[msg]) {
210 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
211 abort();
212 }
213
214 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
215 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
216 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]217
218 /* initialize the log header encoding map : '{|}"#' should be encoded with
219 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
220 * URL encoding only requires '"', '#' to be encoded as well as non-
221 * printable characters above.
222 */
223 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
224 memset(url_encode_map, 0, sizeof(url_encode_map));
225 for (i = 0; i < 32; i++) {
226 FD_SET(i, hdr_encode_map);
227 FD_SET(i, url_encode_map);
228 }
229 for (i = 127; i < 256; i++) {
230 FD_SET(i, hdr_encode_map);
231 FD_SET(i, url_encode_map);
232 }
233
234 tmp = "\"#{|}";
235 while (*tmp) {
236 FD_SET(*tmp, hdr_encode_map);
237 tmp++;
238 }
239
240 tmp = "\"#";
241 while (*tmp) {
242 FD_SET(*tmp, url_encode_map);
243 tmp++;
244 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]245
246 /* memory allocations */
247 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]248 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]249}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]250
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]251/*
252 * We have 26 list of methods (1 per first letter), each of which can have
253 * up to 3 entries (2 valid, 1 null).
254 */
255struct http_method_desc {
256 http_meth_t meth;
257 int len;
258 const char text[8];
259};
260
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]261const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]262 ['C' - 'A'] = {
263 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
264 },
265 ['D' - 'A'] = {
266 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
267 },
268 ['G' - 'A'] = {
269 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
270 },
271 ['H' - 'A'] = {
272 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
273 },
274 ['P' - 'A'] = {
275 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
276 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
277 },
278 ['T' - 'A'] = {
279 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
280 },
281 /* rest is empty like this :
282 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
283 */
284};
285
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]286/* 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]287 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]288 * RFC2616 for those chars.
289 */
290
291const char http_is_spht[256] = {
292 [' '] = 1, ['\t'] = 1,
293};
294
295const char http_is_crlf[256] = {
296 ['\r'] = 1, ['\n'] = 1,
297};
298
299const char http_is_lws[256] = {
300 [' '] = 1, ['\t'] = 1,
301 ['\r'] = 1, ['\n'] = 1,
302};
303
304const char http_is_sep[256] = {
305 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
306 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
307 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
308 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
309 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
310};
311
312const char http_is_ctl[256] = {
313 [0 ... 31] = 1,
314 [127] = 1,
315};
316
317/*
318 * A token is any ASCII char that is neither a separator nor a CTL char.
319 * Do not overwrite values in assignment since gcc-2.95 will not handle
320 * them correctly. Instead, define every non-CTL char's status.
321 */
322const char http_is_token[256] = {
323 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
324 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
325 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
326 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
327 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
328 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
329 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
330 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
331 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
332 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
333 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
334 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
335 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
336 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
337 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
338 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
339 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
340 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
341 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
342 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
343 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
344 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
345 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
346 ['|'] = 1, ['}'] = 0, ['~'] = 1,
347};
348
349
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]350/*
351 * An http ver_token is any ASCII which can be found in an HTTP version,
352 * which includes 'H', 'T', 'P', '/', '.' and any digit.
353 */
354const char http_is_ver_token[256] = {
355 ['.'] = 1, ['/'] = 1,
356 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
357 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
358 ['H'] = 1, ['P'] = 1, ['T'] = 1,
359};
360
361
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]362/*
363 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
364 * CRLF. Text length is measured first, so it cannot be NULL.
365 * The header is also automatically added to the index <hdr_idx>, and the end
366 * of headers is automatically adjusted. The number of bytes added is returned
367 * on success, otherwise <0 is returned indicating an error.
368 */
369int http_header_add_tail(struct buffer *b, struct http_msg *msg,
370 struct hdr_idx *hdr_idx, const char *text)
371{
372 int bytes, len;
373
374 len = strlen(text);
375 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
376 if (!bytes)
377 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]378 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]379 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
380}
381
382/*
383 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
384 * CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
385 * the buffer is only opened and the space reserved, but nothing is copied.
386 * The header is also automatically added to the index <hdr_idx>, and the end
387 * of headers is automatically adjusted. The number of bytes added is returned
388 * on success, otherwise <0 is returned indicating an error.
389 */
390int http_header_add_tail2(struct buffer *b, struct http_msg *msg,
391 struct hdr_idx *hdr_idx, const char *text, int len)
392{
393 int bytes;
394
395 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
396 if (!bytes)
397 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]398 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]399 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
400}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]401
402/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]403 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
404 * If so, returns the position of the first non-space character relative to
405 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
406 * to return a pointer to the place after the first space. Returns 0 if the
407 * header name does not match. Checks are case-insensitive.
408 */
409int http_header_match2(const char *hdr, const char *end,
410 const char *name, int len)
411{
412 const char *val;
413
414 if (hdr + len >= end)
415 return 0;
416 if (hdr[len] != ':')
417 return 0;
418 if (strncasecmp(hdr, name, len) != 0)
419 return 0;
420 val = hdr + len + 1;
421 while (val < end && HTTP_IS_SPHT(*val))
422 val++;
423 if ((val >= end) && (len + 2 <= end - hdr))
424 return len + 2; /* we may replace starting from second space */
425 return val - hdr;
426}
427
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]428/* Find the end of the header value contained between <s> and <e>.
429 * See RFC2616, par 2.2 for more information. Note that it requires
430 * a valid header to return a valid result.
431 */
432const char *find_hdr_value_end(const char *s, const char *e)
433{
434 int quoted, qdpair;
435
436 quoted = qdpair = 0;
437 for (; s < e; s++) {
438 if (qdpair) qdpair = 0;
439 else if (quoted && *s == '\\') qdpair = 1;
440 else if (quoted && *s == '"') quoted = 0;
441 else if (*s == '"') quoted = 1;
442 else if (*s == ',') return s;
443 }
444 return s;
445}
446
447/* Find the first or next occurrence of header <name> in message buffer <sol>
448 * using headers index <idx>, and return it in the <ctx> structure. This
449 * structure holds everything necessary to use the header and find next
450 * occurrence. If its <idx> member is 0, the header is searched from the
451 * beginning. Otherwise, the next occurrence is returned. The function returns
452 * 1 when it finds a value, and 0 when there is no more.
453 */
454int http_find_header2(const char *name, int len,
455 const char *sol, struct hdr_idx *idx,
456 struct hdr_ctx *ctx)
457{
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]458 const char *eol, *sov;
459 int cur_idx;
460
461 if (ctx->idx) {
462 /* We have previously returned a value, let's search
463 * another one on the same line.
464 */
465 cur_idx = ctx->idx;
466 sol = ctx->line;
467 sov = sol + ctx->val + ctx->vlen;
468 eol = sol + idx->v[cur_idx].len;
469
470 if (sov >= eol)
471 /* no more values in this header */
472 goto next_hdr;
473
474 /* values remaining for this header, skip the comma */
475 sov++;
476 while (sov < eol && http_is_lws[(unsigned char)*sov])
477 sov++;
478
479 goto return_hdr;
480 }
481
482 /* first request for this header */
483 sol += hdr_idx_first_pos(idx);
484 cur_idx = hdr_idx_first_idx(idx);
485
486 while (cur_idx) {
487 eol = sol + idx->v[cur_idx].len;
488
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]489 if (len == 0) {
490 /* No argument was passed, we want any header.
491 * To achieve this, we simply build a fake request. */
492 while (sol + len < eol && sol[len] != ':')
493 len++;
494 name = sol;
495 }
496
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]497 if ((len < eol - sol) &&
498 (sol[len] == ':') &&
499 (strncasecmp(sol, name, len) == 0)) {
500
501 sov = sol + len + 1;
502 while (sov < eol && http_is_lws[(unsigned char)*sov])
503 sov++;
504 return_hdr:
505 ctx->line = sol;
506 ctx->idx = cur_idx;
507 ctx->val = sov - sol;
508
509 eol = find_hdr_value_end(sov, eol);
510 ctx->vlen = eol - sov;
511 return 1;
512 }
513 next_hdr:
514 sol = eol + idx->v[cur_idx].cr + 1;
515 cur_idx = idx->v[cur_idx].next;
516 }
517 return 0;
518}
519
520int http_find_header(const char *name,
521 const char *sol, struct hdr_idx *idx,
522 struct hdr_ctx *ctx)
523{
524 return http_find_header2(name, strlen(name), sol, idx, ctx);
525}
526
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]527/* This function handles a server error at the stream interface level. The
528 * stream interface is assumed to be already in a closed state. An optional
529 * message is copied into the input buffer, and an HTTP status code stored.
530 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]531 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]532 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]533static void http_server_error(struct session *t, struct stream_interface *si,
534 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]535{
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]536 buffer_erase(si->ob);
537 buffer_erase(si->ib);
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]538 buffer_auto_close(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]539 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]540 t->txn.status = status;
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]541 buffer_write(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]542 }
543 if (!(t->flags & SN_ERR_MASK))
544 t->flags |= err;
545 if (!(t->flags & SN_FINST_MASK))
546 t->flags |= finst;
547}
548
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]549/* This function returns the appropriate error location for the given session
550 * and message.
551 */
552
553struct chunk *error_message(struct session *s, int msgnum)
554{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]555 if (s->be->errmsg[msgnum].str)
556 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]557 else if (s->fe->errmsg[msgnum].str)
558 return &s->fe->errmsg[msgnum];
559 else
560 return &http_err_chunks[msgnum];
561}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]562
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]563/*
564 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
565 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
566 */
567static http_meth_t find_http_meth(const char *str, const int len)
568{
569 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]570 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]571
572 m = ((unsigned)*str - 'A');
573
574 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]575 for (h = http_methods[m]; h->len > 0; h++) {
576 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]577 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]578 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]579 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]580 };
581 return HTTP_METH_OTHER;
582 }
583 return HTTP_METH_NONE;
584
585}
586
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]587/* Parse the URI from the given transaction (which is assumed to be in request
588 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
589 * It is returned otherwise.
590 */
591static char *
592http_get_path(struct http_txn *txn)
593{
594 char *ptr, *end;
595
596 ptr = txn->req.sol + txn->req.sl.rq.u;
597 end = ptr + txn->req.sl.rq.u_l;
598
599 if (ptr >= end)
600 return NULL;
601
602 /* RFC2616, par. 5.1.2 :
603 * Request-URI = "*" | absuri | abspath | authority
604 */
605
606 if (*ptr == '*')
607 return NULL;
608
609 if (isalpha((unsigned char)*ptr)) {
610 /* this is a scheme as described by RFC3986, par. 3.1 */
611 ptr++;
612 while (ptr < end &&
613 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
614 ptr++;
615 /* skip '://' */
616 if (ptr == end || *ptr++ != ':')
617 return NULL;
618 if (ptr == end || *ptr++ != '/')
619 return NULL;
620 if (ptr == end || *ptr++ != '/')
621 return NULL;
622 }
623 /* skip [user[:passwd]@]host[:[port]] */
624
625 while (ptr < end && *ptr != '/')
626 ptr++;
627
628 if (ptr == end)
629 return NULL;
630
631 /* OK, we got the '/' ! */
632 return ptr;
633}
634
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]635/* Returns a 302 for a redirectable request. This may only be called just after
636 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
637 * left unchanged and will follow normal proxy processing.
638 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]639void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]640{
641 struct http_txn *txn;
642 struct chunk rdr;
643 char *path;
644 int len;
645
646 /* 1: create the response header */
647 rdr.len = strlen(HTTP_302);
648 rdr.str = trash;
649 memcpy(rdr.str, HTTP_302, rdr.len);
650
651 /* 2: add the server's prefix */
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]652 if (rdr.len + s->srv->rdr_len > rdr.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]653 return;
654
655 memcpy(rdr.str + rdr.len, s->srv->rdr_pfx, s->srv->rdr_len);
656 rdr.len += s->srv->rdr_len;
657
658 /* 3: add the request URI */
659 txn = &s->txn;
660 path = http_get_path(txn);
661 if (!path)
662 return;
663
664 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]665 if (rdr.len + len > rdr.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]666 return;
667
668 memcpy(rdr.str + rdr.len, path, len);
669 rdr.len += len;
670 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
671 rdr.len += 4;
672
673 /* prepare to return without error. */
Willy Tarreau99126c32008-11-27 10:30:51 +0100[diff] [blame]674 si->shutr(si);
675 si->shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]676 si->err_type = SI_ET_NONE;
677 si->err_loc = NULL;
678 si->state = SI_ST_CLO;
679
680 /* send the message */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]681 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &rdr);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]682
683 /* FIXME: we should increase a counter of redirects per server and per backend. */
684 if (s->srv)
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]685 srv_inc_sess_ctr(s->srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]686}
687
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]688/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]689 * that the server side is closed. Note that err_type is actually a
690 * bitmask, where almost only aborts may be cumulated with other
691 * values. We consider that aborted operations are more important
692 * than timeouts or errors due to the fact that nobody else in the
693 * logs might explain incomplete retries. All others should avoid
694 * being cumulated. It should normally not be possible to have multiple
695 * aborts at once, but just in case, the first one in sequence is reported.
696 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]697void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]698{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]699 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]700
701 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]702 http_server_error(s, si, SN_ERR_CLICL, 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_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]705 http_server_error(s, si, SN_ERR_CLICL, 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_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]708 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
709 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]710 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]711 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
712 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]713 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]714 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
715 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]716 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]717 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
718 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]719 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]720 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
721 500, error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]722}
723
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]724extern const char sess_term_cond[8];
725extern const char sess_fin_state[8];
726extern const char *monthname[12];
727const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
728const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
729 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
730 unknown, Set-cookie Rewritten */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]731struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]732struct pool_head *pool2_capture;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]733
Emeric Brun3a058f32009-06-30 18:26:00 +0200[diff] [blame]734void http_sess_clflog(struct session *s)
735{
736 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
737 struct proxy *fe = s->fe;
738 struct proxy *be = s->be;
739 struct proxy *prx_log;
740 struct http_txn *txn = &s->txn;
741 int tolog, level, err;
742 char *uri, *h;
743 char *svid;
744 struct tm tm;
745 static char tmpline[MAX_SYSLOG_LEN];
746 int hdr;
747 size_t w;
748 int t_request;
749
750 prx_log = fe;
751 err = (s->flags & (SN_ERR_MASK | SN_REDISP)) ||
752 (s->conn_retries != be->conn_retries) ||
753 txn->status >= 500;
754
755 if (s->cli_addr.ss_family == AF_INET)
756 inet_ntop(AF_INET,
757 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
758 pn, sizeof(pn));
759 else
760 inet_ntop(AF_INET6,
761 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
762 pn, sizeof(pn));
763
764 get_gmtime(s->logs.accept_date.tv_sec, &tm);
765
766 /* FIXME: let's limit ourselves to frontend logging for now. */
767 tolog = fe->to_log;
768
769 h = tmpline;
770
771 w = snprintf(h, sizeof(tmpline),
772 "%s - - [%02d/%s/%04d:%02d:%02d:%02d +0000]",
773 pn,
774 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
775 tm.tm_hour, tm.tm_min, tm.tm_sec);
776 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
777 goto trunc;
778 h += w;
779
780 if (h >= tmpline + sizeof(tmpline) - 4)
781 goto trunc;
782
783 *(h++) = ' ';
784 *(h++) = '\"';
785 uri = txn->uri ? txn->uri : "<BADREQ>";
786 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
787 '#', url_encode_map, uri);
788 *(h++) = '\"';
789
790 w = snprintf(h, sizeof(tmpline) - (h - tmpline), " %d %lld", txn->status, s->logs.bytes_out);
791 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
792 goto trunc;
793 h += w;
794
795 if (h >= tmpline + sizeof(tmpline) - 9)
796 goto trunc;
797 memcpy(h, " \"-\" \"-\"", 8);
798 h += 8;
799
800 w = snprintf(h, sizeof(tmpline) - (h - tmpline),
801 " %d %03d",
802 (s->cli_addr.ss_family == AF_INET) ?
803 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
804 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
805 (int)s->logs.accept_date.tv_usec/1000);
806 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
807 goto trunc;
808 h += w;
809
810 w = strlen(fe->id);
811 if (h >= tmpline + sizeof(tmpline) - 4 - w)
812 goto trunc;
813 *(h++) = ' ';
814 *(h++) = '\"';
815 memcpy(h, fe->id, w);
816 h += w;
817 *(h++) = '\"';
818
819 w = strlen(be->id);
820 if (h >= tmpline + sizeof(tmpline) - 4 - w)
821 goto trunc;
822 *(h++) = ' ';
823 *(h++) = '\"';
824 memcpy(h, be->id, w);
825 h += w;
826 *(h++) = '\"';
827
828 svid = (tolog & LW_SVID) ?
829 (s->data_source != DATA_SRC_STATS) ?
830 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
831
832 w = strlen(svid);
833 if (h >= tmpline + sizeof(tmpline) - 4 - w)
834 goto trunc;
835 *(h++) = ' ';
836 *(h++) = '\"';
837 memcpy(h, svid, w);
838 h += w;
839 *(h++) = '\"';
840
841 t_request = -1;
842 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
843 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
844 w = snprintf(h, sizeof(tmpline) - (h - tmpline),
845 " %d %ld %ld %ld %ld",
846 t_request,
847 (s->logs.t_queue >= 0) ? s->logs.t_queue - t_request : -1,
848 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
849 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
850 s->logs.t_close);
851 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
852 goto trunc;
853 h += w;
854
855 if (h >= tmpline + sizeof(tmpline) - 8)
856 goto trunc;
857 *(h++) = ' ';
858 *(h++) = '\"';
859 *(h++) = sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT];
860 *(h++) = sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT];
861 *(h++) = (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
862 *(h++) = (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-';
863 *(h++) = '\"';
864
865 w = snprintf(h, sizeof(tmpline) - (h - tmpline),
866 " %d %d %d %d %d %ld %ld",
867 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
868 (s->conn_retries > 0) ? (be->conn_retries - s->conn_retries) : be->conn_retries,
869 s->logs.srv_queue_size, s->logs.prx_queue_size);
870
871 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
872 goto trunc;
873 h += w;
874
875 if (txn->cli_cookie) {
876 w = strlen(txn->cli_cookie);
877 if (h >= tmpline + sizeof(tmpline) - 4 - w)
878 goto trunc;
879 *(h++) = ' ';
880 *(h++) = '\"';
881 memcpy(h, txn->cli_cookie, w);
882 h += w;
883 *(h++) = '\"';
884 } else {
885 if (h >= tmpline + sizeof(tmpline) - 5)
886 goto trunc;
887 memcpy(h, " \"-\"", 4);
888 h += 4;
889 }
890
891 if (txn->srv_cookie) {
892 w = strlen(txn->srv_cookie);
893 if (h >= tmpline + sizeof(tmpline) - 4 - w)
894 goto trunc;
895 *(h++) = ' ';
896 *(h++) = '\"';
897 memcpy(h, txn->srv_cookie, w);
898 h += w;
899 *(h++) = '\"';
900 } else {
901 if (h >= tmpline + sizeof(tmpline) - 5)
902 goto trunc;
903 memcpy(h, " \"-\"", 4);
904 h += 4;
905 }
906
907 if ((fe->to_log & LW_REQHDR) && txn->req.cap) {
908 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
909 if (h >= sizeof (tmpline) + tmpline - 4)
910 goto trunc;
911 *(h++) = ' ';
912 *(h++) = '\"';
913 h = encode_string(h, tmpline + sizeof(tmpline) - 2,
914 '#', hdr_encode_map, txn->req.cap[hdr]);
915 *(h++) = '\"';
916 }
917 }
918
919 if ((fe->to_log & LW_RSPHDR) && txn->rsp.cap) {
920 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
921 if (h >= sizeof (tmpline) + tmpline - 4)
922 goto trunc;
923 *(h++) = ' ';
924 *(h++) = '\"';
925 h = encode_string(h, tmpline + sizeof(tmpline) - 2,
926 '#', hdr_encode_map, txn->rsp.cap[hdr]);
927 *(h++) = '\"';
928 }
929 }
930
931trunc:
932 *h = '\0';
933
934 level = LOG_INFO;
935 if (err && (fe->options2 & PR_O2_LOGERRORS))
936 level = LOG_ERR;
937
938 send_log(prx_log, level, "%s\n", tmpline);
939
940 s->logs.logwait = 0;
941}
942
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]943/*
944 * send a log for the session when we have enough info about it.
945 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]946 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]947void http_sess_log(struct session *s)
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]948{
949 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
950 struct proxy *fe = s->fe;
951 struct proxy *be = s->be;
952 struct proxy *prx_log;
953 struct http_txn *txn = &s->txn;
Willy Tarreauc9bd0cc2009-05-10 11:57:02 +0200[diff] [blame]954 int tolog, level, err;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]955 char *uri, *h;
956 char *svid;
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]957 struct tm tm;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]958 static char tmpline[MAX_SYSLOG_LEN];
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]959 int t_request;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]960 int hdr;
961
Willy Tarreauc9bd0cc2009-05-10 11:57:02 +0200[diff] [blame]962 /* if we don't want to log normal traffic, return now */
963 err = (s->flags & (SN_ERR_MASK | SN_REDISP)) ||
964 (s->conn_retries != be->conn_retries) ||
965 txn->status >= 500;
966 if (!err && (fe->options2 & PR_O2_NOLOGNORM))
967 return;
968
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]969 if (fe->logfac1 < 0 && fe->logfac2 < 0)
970 return;
971 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]972
Emeric Brun3a058f32009-06-30 18:26:00 +0200[diff] [blame]973 if (prx_log->options2 & PR_O2_CLFLOG)
974 return http_sess_clflog(s);
975
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]976 if (s->cli_addr.ss_family == AF_INET)
977 inet_ntop(AF_INET,
978 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
979 pn, sizeof(pn));
980 else
981 inet_ntop(AF_INET6,
982 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
983 pn, sizeof(pn));
984
Willy Tarreaub7f694f2008-06-22 17:18:02 +0200[diff] [blame]985 get_localtime(s->logs.accept_date.tv_sec, &tm);
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]986
987 /* FIXME: let's limit ourselves to frontend logging for now. */
988 tolog = fe->to_log;
989
990 h = tmpline;
991 if (fe->to_log & LW_REQHDR &&
992 txn->req.cap &&
993 (h < tmpline + sizeof(tmpline) - 10)) {
994 *(h++) = ' ';
995 *(h++) = '{';
996 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
997 if (hdr)
998 *(h++) = '|';
999 if (txn->req.cap[hdr] != NULL)
1000 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
1001 '#', hdr_encode_map, txn->req.cap[hdr]);
1002 }
1003 *(h++) = '}';
1004 }
1005
1006 if (fe->to_log & LW_RSPHDR &&
1007 txn->rsp.cap &&
1008 (h < tmpline + sizeof(tmpline) - 7)) {
1009 *(h++) = ' ';
1010 *(h++) = '{';
1011 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
1012 if (hdr)
1013 *(h++) = '|';
1014 if (txn->rsp.cap[hdr] != NULL)
1015 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
1016 '#', hdr_encode_map, txn->rsp.cap[hdr]);
1017 }
1018 *(h++) = '}';
1019 }
1020
1021 if (h < tmpline + sizeof(tmpline) - 4) {
1022 *(h++) = ' ';
1023 *(h++) = '"';
1024 uri = txn->uri ? txn->uri : "<BADREQ>";
1025 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
1026 '#', url_encode_map, uri);
1027 *(h++) = '"';
1028 }
1029 *h = '\0';
1030
1031 svid = (tolog & LW_SVID) ?
1032 (s->data_source != DATA_SRC_STATS) ?
1033 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
1034
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]1035 t_request = -1;
1036 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
1037 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
1038
Willy Tarreauc9bd0cc2009-05-10 11:57:02 +0200[diff] [blame]1039 level = LOG_INFO;
1040 if (err && (fe->options2 & PR_O2_LOGERRORS))
1041 level = LOG_ERR;
1042
1043 send_log(prx_log, level,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1044 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
Willy Tarreau1772ece2009-04-03 14:49:12 +0200[diff] [blame]1045 " %s %s/%s %d/%ld/%ld/%ld/%s%ld %d %s%lld"
1046 " %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]1047 pn,
1048 (s->cli_addr.ss_family == AF_INET) ?
1049 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
1050 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]1051 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
Willy Tarreau1772ece2009-04-03 14:49:12 +0200[diff] [blame]1052 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]1053 fe->id, be->id, svid,
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]1054 t_request,
1055 (s->logs.t_queue >= 0) ? s->logs.t_queue - t_request : -1,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1056 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
1057 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
1058 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
1059 txn->status,
Willy Tarreau8b3977f2008-01-18 11:16:32 +0100[diff] [blame]1060 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_out,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1061 txn->cli_cookie ? txn->cli_cookie : "-",
1062 txn->srv_cookie ? txn->srv_cookie : "-",
1063 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
1064 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
1065 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
1066 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
1067 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]1068 (s->flags & SN_REDISP)?"+":"",
1069 (s->conn_retries>0)?(be->conn_retries - s->conn_retries):be->conn_retries,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1070 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
1071
1072 s->logs.logwait = 0;
1073}
1074
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1075
1076/*
1077 * Capture headers from message starting at <som> according to header list
1078 * <cap_hdr>, and fill the <idx> structure appropriately.
1079 */
1080void capture_headers(char *som, struct hdr_idx *idx,
1081 char **cap, struct cap_hdr *cap_hdr)
1082{
1083 char *eol, *sol, *col, *sov;
1084 int cur_idx;
1085 struct cap_hdr *h;
1086 int len;
1087
1088 sol = som + hdr_idx_first_pos(idx);
1089 cur_idx = hdr_idx_first_idx(idx);
1090
1091 while (cur_idx) {
1092 eol = sol + idx->v[cur_idx].len;
1093
1094 col = sol;
1095 while (col < eol && *col != ':')
1096 col++;
1097
1098 sov = col + 1;
1099 while (sov < eol && http_is_lws[(unsigned char)*sov])
1100 sov++;
1101
1102 for (h = cap_hdr; h; h = h->next) {
1103 if ((h->namelen == col - sol) &&
1104 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1105 if (cap[h->index] == NULL)
1106 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1107 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1108
1109 if (cap[h->index] == NULL) {
1110 Alert("HTTP capture : out of memory.\n");
1111 continue;
1112 }
1113
1114 len = eol - sov;
1115 if (len > h->len)
1116 len = h->len;
1117
1118 memcpy(cap[h->index], sov, len);
1119 cap[h->index][len]=0;
1120 }
1121 }
1122 sol = eol + idx->v[cur_idx].cr + 1;
1123 cur_idx = idx->v[cur_idx].next;
1124 }
1125}
1126
1127
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1128/* either we find an LF at <ptr> or we jump to <bad>.
1129 */
1130#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1131
1132/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1133 * otherwise to <http_msg_ood> with <state> set to <st>.
1134 */
1135#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1136 ptr++; \
1137 if (likely(ptr < end)) \
1138 goto good; \
1139 else { \
1140 state = (st); \
1141 goto http_msg_ood; \
1142 } \
1143 } while (0)
1144
1145
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1146/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1147 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1148 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1149 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1150 * will give undefined results.
1151 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1152 * and that msg->sol points to the beginning of the response.
1153 * If a complete line is found (which implies that at least one CR or LF is
1154 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1155 * returned indicating an incomplete line (which does not mean that parts have
1156 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1157 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1158 * upon next call.
1159 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1160 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1161 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1162 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1163 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1164 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1165const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf,
1166 unsigned int state, const char *ptr, const char *end,
1167 char **ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1168{
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1169 switch (state) {
1170 http_msg_rpver:
1171 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1172 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1173 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1174
1175 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1176 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1177 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1178 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1179 state = HTTP_MSG_ERROR;
1180 break;
1181
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1182 http_msg_rpver_sp:
1183 case HTTP_MSG_RPVER_SP:
1184 if (likely(!HTTP_IS_LWS(*ptr))) {
1185 msg->sl.st.c = ptr - msg_buf;
1186 goto http_msg_rpcode;
1187 }
1188 if (likely(HTTP_IS_SPHT(*ptr)))
1189 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1190 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1191 state = HTTP_MSG_ERROR;
1192 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1193
1194 http_msg_rpcode:
1195 case HTTP_MSG_RPCODE:
1196 if (likely(!HTTP_IS_LWS(*ptr)))
1197 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1198
1199 if (likely(HTTP_IS_SPHT(*ptr))) {
1200 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
1201 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1202 }
1203
1204 /* so it's a CR/LF, so there is no reason phrase */
1205 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
1206 http_msg_rsp_reason:
1207 /* FIXME: should we support HTTP responses without any reason phrase ? */
1208 msg->sl.st.r = ptr - msg_buf;
1209 msg->sl.st.r_l = 0;
1210 goto http_msg_rpline_eol;
1211
1212 http_msg_rpcode_sp:
1213 case HTTP_MSG_RPCODE_SP:
1214 if (likely(!HTTP_IS_LWS(*ptr))) {
1215 msg->sl.st.r = ptr - msg_buf;
1216 goto http_msg_rpreason;
1217 }
1218 if (likely(HTTP_IS_SPHT(*ptr)))
1219 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1220 /* so it's a CR/LF, so there is no reason phrase */
1221 goto http_msg_rsp_reason;
1222
1223 http_msg_rpreason:
1224 case HTTP_MSG_RPREASON:
1225 if (likely(!HTTP_IS_CRLF(*ptr)))
1226 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
1227 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
1228 http_msg_rpline_eol:
1229 /* We have seen the end of line. Note that we do not
1230 * necessarily have the \n yet, but at least we know that we
1231 * have EITHER \r OR \n, otherwise the response would not be
1232 * complete. We can then record the response length and return
1233 * to the caller which will be able to register it.
1234 */
1235 msg->sl.st.l = ptr - msg->sol;
1236 return ptr;
1237
1238#ifdef DEBUG_FULL
1239 default:
1240 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1241 exit(1);
1242#endif
1243 }
1244
1245 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1246 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1247 if (ret_state)
1248 *ret_state = state;
1249 if (ret_ptr)
1250 *ret_ptr = (char *)ptr;
1251 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1252}
1253
1254
1255/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1256 * This function parses a request line between <ptr> and <end>, starting with
1257 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1258 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1259 * will give undefined results.
1260 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1261 * and that msg->sol points to the beginning of the request.
1262 * If a complete line is found (which implies that at least one CR or LF is
1263 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1264 * returned indicating an incomplete line (which does not mean that parts have
1265 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1266 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1267 * upon next call.
1268 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1269 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1270 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1271 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1272 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1273 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1274const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf,
1275 unsigned int state, const char *ptr, const char *end,
1276 char **ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1277{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1278 switch (state) {
1279 http_msg_rqmeth:
1280 case HTTP_MSG_RQMETH:
1281 if (likely(HTTP_IS_TOKEN(*ptr)))
1282 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1283
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1284 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1285 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1286 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1287 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1288
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1289 if (likely(HTTP_IS_CRLF(*ptr))) {
1290 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1291 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1292 http_msg_req09_uri:
1293 msg->sl.rq.u = ptr - msg_buf;
1294 http_msg_req09_uri_e:
1295 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1296 http_msg_req09_ver:
1297 msg->sl.rq.v = ptr - msg_buf;
1298 msg->sl.rq.v_l = 0;
1299 goto http_msg_rqline_eol;
1300 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1301 state = HTTP_MSG_ERROR;
1302 break;
1303
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1304 http_msg_rqmeth_sp:
1305 case HTTP_MSG_RQMETH_SP:
1306 if (likely(!HTTP_IS_LWS(*ptr))) {
1307 msg->sl.rq.u = ptr - msg_buf;
1308 goto http_msg_rquri;
1309 }
1310 if (likely(HTTP_IS_SPHT(*ptr)))
1311 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1312 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1313 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1314
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1315 http_msg_rquri:
1316 case HTTP_MSG_RQURI:
1317 if (likely(!HTTP_IS_LWS(*ptr)))
1318 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1319
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1320 if (likely(HTTP_IS_SPHT(*ptr))) {
1321 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1322 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1323 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1324
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1325 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1326 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1327
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1328 http_msg_rquri_sp:
1329 case HTTP_MSG_RQURI_SP:
1330 if (likely(!HTTP_IS_LWS(*ptr))) {
1331 msg->sl.rq.v = ptr - msg_buf;
1332 goto http_msg_rqver;
1333 }
1334 if (likely(HTTP_IS_SPHT(*ptr)))
1335 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1336 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1337 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1338
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1339 http_msg_rqver:
1340 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1341 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1342 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1343
1344 if (likely(HTTP_IS_CRLF(*ptr))) {
1345 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1346 http_msg_rqline_eol:
1347 /* We have seen the end of line. Note that we do not
1348 * necessarily have the \n yet, but at least we know that we
1349 * have EITHER \r OR \n, otherwise the request would not be
1350 * complete. We can then record the request length and return
1351 * to the caller which will be able to register it.
1352 */
1353 msg->sl.rq.l = ptr - msg->sol;
1354 return ptr;
1355 }
1356
1357 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1358 state = HTTP_MSG_ERROR;
1359 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1360
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1361#ifdef DEBUG_FULL
1362 default:
1363 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1364 exit(1);
1365#endif
1366 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1367
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1368 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1369 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1370 if (ret_state)
1371 *ret_state = state;
1372 if (ret_ptr)
1373 *ret_ptr = (char *)ptr;
1374 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1375}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1376
1377
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1378/*
1379 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1380 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1381 * when data are missing and recalled at the exact same location with no
1382 * information loss. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1383 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
1384 * fields.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1385 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1386void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1387{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1388 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1389 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1390
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1391 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1392 ptr = buf->lr;
1393 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1394
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1395 if (unlikely(ptr >= end))
1396 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1397
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1398 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1399 /*
1400 * First, states that are specific to the response only.
1401 * We check them first so that request and headers are
1402 * closer to each other (accessed more often).
1403 */
1404 http_msg_rpbefore:
1405 case HTTP_MSG_RPBEFORE:
1406 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1407 if (likely(ptr != buf->data + msg->som)) {
1408 /* Remove empty leading lines, as recommended by RFC2616. */
1409 buffer_ignore(buf, ptr - buf->data - msg->som);
1410 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1411 }
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]1412 msg->sol = ptr;
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))) {
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1467 if (likely(ptr != buf->data + msg->som)) {
1468 /* Remove empty leading lines, as recommended by RFC2616. */
1469 buffer_ignore(buf, ptr - buf->data - msg->som);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1470 msg->som = ptr - buf->data;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1471 }
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1472 msg->sol = ptr;
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1473 /* we will need this when keep-alive will be supported
1474 hdr_idx_init(idx);
1475 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1476 state = HTTP_MSG_RQMETH;
1477 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1478 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1479
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1480 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1481 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1482
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1483 if (unlikely(*ptr == '\n'))
1484 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1485 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1486 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1487
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1488 http_msg_rqbefore_cr:
1489 case HTTP_MSG_RQBEFORE_CR:
1490 EXPECT_LF_HERE(ptr, http_msg_invalid);
1491 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1492 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1493
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1494 http_msg_rqmeth:
1495 case HTTP_MSG_RQMETH:
1496 case HTTP_MSG_RQMETH_SP:
1497 case HTTP_MSG_RQURI:
1498 case HTTP_MSG_RQURI_SP:
1499 case HTTP_MSG_RQVER:
1500 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1501 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1502 if (unlikely(!ptr))
1503 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1504
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1505 /* we have a full request and we know that we have either a CR
1506 * or an LF at <ptr>.
1507 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1508 //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]1509 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1510
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1511 msg->sol = ptr;
1512 if (likely(*ptr == '\r'))
1513 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1514 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1515
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1516 http_msg_rqline_end:
1517 case HTTP_MSG_RQLINE_END:
1518 /* check for HTTP/0.9 request : no version information available.
1519 * msg->sol must point to the first of CR or LF.
1520 */
1521 if (unlikely(msg->sl.rq.v_l == 0))
1522 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1523
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1524 EXPECT_LF_HERE(ptr, http_msg_invalid);
1525 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1526 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1527
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1528 /*
1529 * Common states below
1530 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1531 http_msg_hdr_first:
1532 case HTTP_MSG_HDR_FIRST:
1533 msg->sol = ptr;
1534 if (likely(!HTTP_IS_CRLF(*ptr))) {
1535 goto http_msg_hdr_name;
1536 }
1537
1538 if (likely(*ptr == '\r'))
1539 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
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 http_msg_hdr_name:
1543 case HTTP_MSG_HDR_NAME:
1544 /* assumes msg->sol points to the first char */
1545 if (likely(HTTP_IS_TOKEN(*ptr)))
1546 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1547
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1548 if (likely(*ptr == ':')) {
1549 msg->col = ptr - buf->data;
1550 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1551 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1552
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1553 if (likely(msg->err_pos < -1) || *ptr == '\n')
1554 goto http_msg_invalid;
1555
1556 if (msg->err_pos == -1) /* capture error pointer */
1557 msg->err_pos = ptr - buf->data; /* >= 0 now */
1558
1559 /* and we still accept this non-token character */
1560 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1561
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1562 http_msg_hdr_l1_sp:
1563 case HTTP_MSG_HDR_L1_SP:
1564 /* assumes msg->sol points to the first char and msg->col to the colon */
1565 if (likely(HTTP_IS_SPHT(*ptr)))
1566 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]1567
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1568 /* header value can be basically anything except CR/LF */
1569 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1570
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1571 if (likely(!HTTP_IS_CRLF(*ptr))) {
1572 goto http_msg_hdr_val;
1573 }
1574
1575 if (likely(*ptr == '\r'))
1576 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1577 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1578
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1579 http_msg_hdr_l1_lf:
1580 case HTTP_MSG_HDR_L1_LF:
1581 EXPECT_LF_HERE(ptr, http_msg_invalid);
1582 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]1583
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1584 http_msg_hdr_l1_lws:
1585 case HTTP_MSG_HDR_L1_LWS:
1586 if (likely(HTTP_IS_SPHT(*ptr))) {
1587 /* replace HT,CR,LF with spaces */
1588 for (; buf->data+msg->sov < ptr; msg->sov++)
1589 buf->data[msg->sov] = ' ';
1590 goto http_msg_hdr_l1_sp;
1591 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1592 /* we had a header consisting only in spaces ! */
1593 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1594 goto http_msg_complete_header;
1595
1596 http_msg_hdr_val:
1597 case HTTP_MSG_HDR_VAL:
1598 /* assumes msg->sol points to the first char, msg->col to the
1599 * colon, and msg->sov points to the first character of the
1600 * value.
1601 */
1602 if (likely(!HTTP_IS_CRLF(*ptr)))
1603 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1604
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1605 msg->eol = ptr;
1606 /* Note: we could also copy eol into ->eoh so that we have the
1607 * real header end in case it ends with lots of LWS, but is this
1608 * really needed ?
1609 */
1610 if (likely(*ptr == '\r'))
1611 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1612 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1613
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1614 http_msg_hdr_l2_lf:
1615 case HTTP_MSG_HDR_L2_LF:
1616 EXPECT_LF_HERE(ptr, http_msg_invalid);
1617 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]1618
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1619 http_msg_hdr_l2_lws:
1620 case HTTP_MSG_HDR_L2_LWS:
1621 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1622 /* LWS: replace HT,CR,LF with spaces */
1623 for (; msg->eol < ptr; msg->eol++)
1624 *msg->eol = ' ';
1625 goto http_msg_hdr_val;
1626 }
1627 http_msg_complete_header:
1628 /*
1629 * It was a new header, so the last one is finished.
1630 * Assumes msg->sol points to the first char, msg->col to the
1631 * colon, msg->sov points to the first character of the value
1632 * and msg->eol to the first CR or LF so we know how the line
1633 * ends. We insert last header into the index.
1634 */
1635 /*
1636 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1637 write(2, msg->sol, msg->eol-msg->sol);
1638 fprintf(stderr,"\n");
1639 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1640
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1641 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1642 idx, idx->tail) < 0))
1643 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1644
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1645 msg->sol = ptr;
1646 if (likely(!HTTP_IS_CRLF(*ptr))) {
1647 goto http_msg_hdr_name;
1648 }
1649
1650 if (likely(*ptr == '\r'))
1651 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1652 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1653
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1654 http_msg_last_lf:
1655 case HTTP_MSG_LAST_LF:
1656 /* Assumes msg->sol points to the first of either CR or LF */
1657 EXPECT_LF_HERE(ptr, http_msg_invalid);
1658 ptr++;
1659 buf->lr = ptr;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1660 msg->col = msg->sov = buf->lr - buf->data;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1661 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1662 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1663 return;
1664#ifdef DEBUG_FULL
1665 default:
1666 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1667 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1668#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1669 }
1670 http_msg_ood:
1671 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1672 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1673 buf->lr = ptr;
1674 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1675
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1676 http_msg_invalid:
1677 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1678 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1679 buf->lr = ptr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1680 return;
1681}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1682
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1683/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1684 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1685 * nothing is done and 1 is returned.
1686 */
1687static int http_upgrade_v09_to_v10(struct buffer *req, struct http_msg *msg, struct http_txn *txn)
1688{
1689 int delta;
1690 char *cur_end;
1691
1692 if (msg->sl.rq.v_l != 0)
1693 return 1;
1694
1695 msg->sol = req->data + msg->som;
1696 cur_end = msg->sol + msg->sl.rq.l;
1697 delta = 0;
1698
1699 if (msg->sl.rq.u_l == 0) {
1700 /* if no URI was set, add "/" */
1701 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
1702 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1703 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1704 }
1705 /* add HTTP version */
1706 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1707 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1708 cur_end += delta;
1709 cur_end = (char *)http_parse_reqline(msg, req->data,
1710 HTTP_MSG_RQMETH,
1711 msg->sol, cur_end + 1,
1712 NULL, NULL);
1713 if (unlikely(!cur_end))
1714 return 0;
1715
1716 /* we have a full HTTP/1.0 request now and we know that
1717 * we have either a CR or an LF at <ptr>.
1718 */
1719 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1720 return 1;
1721}
1722
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1723/* Parse the Connection: headaer of an HTTP request, and set the transaction
1724 * flag TX_REQ_CONN_CLO if a "close" mode is expected. The TX_CON_HDR_PARS flag
1725 * is also set so that we don't parse a second time. If some dangerous values
1726 * are encountered, we leave the status to indicate that the request might be
1727 * interpreted as keep-alive, but we also set the connection flags to indicate
1728 * that we WANT it to be a close, so that the header will be fixed. This
1729 * function should only be called when we know we're interested in checking
1730 * the request (not a CONNECT, and FE or BE mangles the header).
1731 */
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]1732void http_req_parse_connection_header(struct http_txn *txn)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1733{
1734 struct http_msg *msg = &txn->req;
1735 struct hdr_ctx ctx;
1736 int conn_cl, conn_ka;
1737
1738 if (txn->flags & TX_CON_HDR_PARS)
1739 return;
1740
1741 conn_cl = 0;
1742 conn_ka = 0;
1743 ctx.idx = 0;
1744
1745 while (http_find_header2("Connection", 10, msg->sol, &txn->hdr_idx, &ctx)) {
1746 if (ctx.vlen == 5 && strncasecmp(ctx.line + ctx.val, "close", 5) == 0)
1747 conn_cl = 1;
1748 else if (ctx.vlen == 10 && strncasecmp(ctx.line + ctx.val, "keep-alive", 10) == 0)
1749 conn_ka = 1;
1750 }
1751
1752 /* Determine if the client wishes keep-alive or close.
1753 * RFC2616 #8.1.2 and #14.10 state that HTTP/1.1 and above connections
1754 * are persistent unless "Connection: close" is explicitly specified.
1755 * RFC2616 #19.6.2 refers to RFC2068 for HTTP/1.0 persistent connections.
1756 * RFC2068 #19.7.1 states that HTTP/1.0 clients are not persistent unless
1757 * they explicitly specify "Connection: Keep-Alive", regardless of any
1758 * optional "Keep-Alive" header.
1759 * Note that if we find a request with both "Connection: close" and
1760 * "Connection: Keep-Alive", we indicate we want a close but don't have
1761 * it, so that it can be enforced later.
1762 */
1763
1764 if (txn->flags & TX_REQ_VER_11) { /* HTTP/1.1 */
1765 if (conn_cl) {
1766 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
1767 if (!conn_ka)
1768 txn->flags |= TX_REQ_CONN_CLO;
1769 }
1770 } else { /* HTTP/1.0 */
1771 if (!conn_ka)
1772 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO | TX_REQ_CONN_CLO;
1773 else if (conn_cl)
1774 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
1775 }
1776 txn->flags |= TX_CON_HDR_PARS;
1777}
1778
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1779/* Parse the chunk size at buf->lr. Once done, it adjusts ->lr to point to the
1780 * first byte of body, and increments msg->sov by the number of bytes parsed,
1781 * so that we know we can forward between ->som and ->sov. Note that due to
1782 * possible wrapping at the end of the buffer, it is possible that msg->sov is
1783 * lower than msg->som.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1784 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1785 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1786 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1787int http_parse_chunk_size(struct buffer *buf, struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1788{
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1789 char *ptr = buf->lr;
1790 char *end = buf->data + buf->size;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1791 unsigned int chunk = 0;
1792
1793 /* The chunk size is in the following form, though we are only
1794 * interested in the size and CRLF :
1795 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1796 */
1797 while (1) {
1798 int c;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1799 if (ptr == buf->r)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1800 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1801 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1802 if (c < 0) /* not a hex digit anymore */
1803 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1804 if (++ptr >= end)
1805 ptr = buf->data;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1806 if (chunk & 0xF000000) /* overflow will occur */
1807 return -1;
1808 chunk = (chunk << 4) + c;
1809 }
1810
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1811 /* empty size not allowed */
1812 if (ptr == buf->lr)
1813 return -1;
1814
1815 while (http_is_spht[(unsigned char)*ptr]) {
1816 if (++ptr >= end)
1817 ptr = buf->data;
1818 if (ptr == buf->r)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1819 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1820 }
1821
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1822 /* Up to there, we know that at least one byte is present at *ptr. Check
1823 * for the end of chunk size.
1824 */
1825 while (1) {
1826 if (likely(HTTP_IS_CRLF(*ptr))) {
1827 /* we now have a CR or an LF at ptr */
1828 if (likely(*ptr == '\r')) {
1829 if (++ptr >= end)
1830 ptr = buf->data;
1831 if (ptr == buf->r)
1832 return 0;
1833 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1834
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1835 if (*ptr != '\n')
1836 return -1;
1837 if (++ptr >= end)
1838 ptr = buf->data;
1839 /* done */
1840 break;
1841 }
1842 else if (*ptr == ';') {
1843 /* chunk extension, ends at next CRLF */
1844 if (++ptr >= end)
1845 ptr = buf->data;
1846 if (ptr == buf->r)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1847 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1848
1849 while (!HTTP_IS_CRLF(*ptr)) {
1850 if (++ptr >= end)
1851 ptr = buf->data;
1852 if (ptr == buf->r)
1853 return 0;
1854 }
1855 /* we have a CRLF now, loop above */
1856 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1857 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1858 else
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1859 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1860 }
1861
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1862 /* OK we found our CRLF and now <ptr> points to the next byte,
1863 * which may or may not be present. We save that into ->lr and
1864 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1865 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1866 msg->sov += ptr - buf->lr;
1867 buf->lr = ptr;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1868 msg->hdr_content_len = chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1869 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1870 return 1;
1871}
1872
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]1873/* This function skips trailers in the buffer <buf> associated with HTTP
1874 * message <msg>. The first visited position is buf->lr. If the end of
1875 * the trailers is found, it is automatically scheduled to be forwarded,
1876 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1877 * If not enough data are available, the function does not change anything
1878 * except maybe buf->lr if it could parse some lines, and returns zero. If
1879 * a parse error is encountered, the function returns < 0 and does not
1880 * change anything except maybe buf->lr. Note that the message must already
1881 * be in HTTP_MSG_TRAILERS state before calling this function, which implies
1882 * that all non-trailers data have already been scheduled for forwarding. It
1883 * is also important to note that this function is designed to be able to
1884 * parse wrapped headers at end of buffer.
1885 */
1886int http_forward_trailers(struct buffer *buf, struct http_msg *msg)
1887{
1888 /* we have buf->lr which points to next line. Look for CRLF. */
1889 while (1) {
1890 char *p1 = NULL, *p2 = NULL;
1891 char *ptr = buf->lr;
1892
1893 /* scan current line and stop at LF or CRLF */
1894 while (1) {
1895 if (ptr == buf->r)
1896 return 0;
1897
1898 if (*ptr == '\n') {
1899 if (!p1)
1900 p1 = ptr;
1901 p2 = ptr;
1902 break;
1903 }
1904
1905 if (*ptr == '\r') {
1906 if (p1)
1907 return -1;
1908 p1 = ptr;
1909 }
1910
1911 ptr++;
1912 if (ptr >= buf->data + buf->size)
1913 ptr = buf->data;
1914 }
1915
1916 /* after LF; point to beginning of next line */
1917 p2++;
1918 if (p2 >= buf->data + buf->size)
1919 p2 = buf->data;
1920
1921 if (p1 == buf->lr) {
1922 /* LF/CRLF at beginning of line => end of trailers at p2 */
1923 int bytes;
1924 buf->lr = p2;
1925
1926 bytes = buf->lr - buf->data;
1927 /* forward last remaining trailers */
1928 buffer_forward(buf, bytes);
1929 msg->som = msg->sov = bytes;
1930 msg->msg_state = HTTP_MSG_DONE;
1931 return 1;
1932 }
1933 /* OK, next line then */
1934 buf->lr = p2;
1935 }
1936}
1937
1938/* This function may be called only in HTTP_MSG_DATA_CRLF. It reads the CRLF or
1939 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
1940 * ->som, buf->lr in order to include this part into the next forwarding phase.
1941 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1942 * not enough data are available, the function does not change anything and
1943 * returns zero. If a parse error is encountered, the function returns < 0 and
1944 * does not change anything. Note: this function is designed to parse wrapped
1945 * CRLF at the end of the buffer.
1946 */
1947int http_skip_chunk_crlf(struct buffer *buf, struct http_msg *msg)
1948{
1949 char *ptr;
1950 int bytes;
1951
1952 /* NB: we'll check data availabilty at the end. It's not a
1953 * problem because whatever we match first will be checked
1954 * against the correct length.
1955 */
1956 bytes = 1;
1957 ptr = buf->lr;
1958 if (*ptr == '\r') {
1959 bytes++;
1960 ptr++;
1961 if (ptr >= buf->data + buf->size)
1962 ptr = buf->data;
1963 }
1964
1965 if (buf->l < bytes)
1966 return 0;
1967
1968 if (*ptr != '\n')
1969 return -1;
1970
1971 ptr++;
1972 if (ptr >= buf->data + buf->size)
1973 ptr = buf->data;
1974 buf->lr = ptr;
1975 /* prepare the CRLF to be forwarded. msg->som may be before data but we don't care */
1976 msg->sov = ptr - buf->data;
1977 msg->som = msg->sov - bytes;
1978 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1979 return 1;
1980}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1981
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1982/* This stream analyser waits for a complete HTTP request. It returns 1 if the
1983 * processing can continue on next analysers, or zero if it either needs more
1984 * data or wants to immediately abort the request (eg: timeout, error, ...). It
1985 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
1986 * when it has nothing left to do, and may remove any analyser when it wants to
1987 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1988 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]1989int http_wait_for_request(struct session *s, struct buffer *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1990{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1991 /*
1992 * We will parse the partial (or complete) lines.
1993 * We will check the request syntax, and also join multi-line
1994 * headers. An index of all the lines will be elaborated while
1995 * parsing.
1996 *
1997 * For the parsing, we use a 28 states FSM.
1998 *
1999 * Here is the information we currently have :
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2000 * req->data + msg->som = beginning of request
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2001 * req->data + req->eoh = end of processed headers / start of current one
2002 * req->data + req->eol = end of current header or line (LF or CRLF)
2003 * req->lr = first non-visited byte
2004 * req->r = end of data
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2005 *
2006 * At end of parsing, we may perform a capture of the error (if any), and
2007 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2008 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2009 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2010 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2011
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2012 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2013 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2014 struct http_txn *txn = &s->txn;
2015 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2016 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2017
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2018 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
2019 now_ms, __FUNCTION__,
2020 s,
2021 req,
2022 req->rex, req->wex,
2023 req->flags,
2024 req->l,
2025 req->analysers);
2026
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2027 /* we're speaking HTTP here, so let's speak HTTP to the client */
2028 s->srv_error = http_return_srv_error;
2029
Willy Tarreauaec571c2009-12-27 17:18:11 +0100[diff] [blame]2030 http_parse_again:
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2031 if (likely(req->lr < req->r))
2032 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2033
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2034 /* 1: we might have to print this header in debug mode */
2035 if (unlikely((global.mode & MODE_DEBUG) &&
2036 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2037 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2038 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2039
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2040 sol = req->data + msg->som;
2041 eol = sol + msg->sl.rq.l;
2042 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2043
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2044 sol += hdr_idx_first_pos(&txn->hdr_idx);
2045 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2046
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2047 while (cur_idx) {
2048 eol = sol + txn->hdr_idx.v[cur_idx].len;
2049 debug_hdr("clihdr", s, sol, eol);
2050 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2051 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2052 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2053 }
2054
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2055
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2056 /*
2057 * Now we quickly check if we have found a full valid request.
2058 * If not so, we check the FD and buffer states before leaving.
2059 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2060 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2061 * requests are checked first.
2062 *
2063 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2064
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2065 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2066 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2067 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2068 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2069 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
2070 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2071
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2072 /* 1: Since we are in header mode, if there's no space
2073 * left for headers, we won't be able to free more
2074 * later, so the session will never terminate. We
2075 * must terminate it now.
2076 */
2077 if (unlikely(req->flags & BF_FULL)) {
Willy Tarreauaec571c2009-12-27 17:18:11 +0100[diff] [blame]2078 /* It is possible the analyser has stopped because of
2079 * lack of space at the end of the buffer, while the
2080 * beginning is free (skipped blanks or previous
2081 * requests vanished). In this case, we try to re-aling
2082 * the buffer, and update the few relevant pointers.
2083 * Since we're copying via the trash, it's important that
2084 * it is always as large as a buffer.
2085 */
2086 if (req->l < buffer_max_len(req)) {
2087 /* let's move what remains */
2088 int max, done;
2089 unsigned offset = req->w - req->data;
2090
2091 done = 0;
2092 while (done < req->l) {
2093 if (req->r > req->w)
2094 max = req->r - req->w;
2095 else
2096 max = req->data + req->size - req->w;
2097 memcpy(trash + done, req->w, max);
2098 done += max;
2099 req->w += max;
2100 if (req->w >= req->data + req->size)
2101 req->w -= req->size;
2102 }
2103 if (done)
2104 memcpy(req->data, trash, done);
2105 msg->eoh = msg->som = 0;
2106
2107 /* move all known pointers */
2108 req->w = req->data;
2109 req->lr -= offset; if (req->lr < req->data) req->lr += req->size;
2110 req->r -= offset; if (req->r < req->data) req->r += req->size;
2111 msg->sol -= offset; if (msg->sol < req->data) msg->sol += req->size;
2112 msg->eol -= offset; if (msg->eol < req->data) msg->eol += req->size;
2113
2114 /* adjust relative pointers */
2115 msg->col += req->size - offset; if (msg->col >= req->size) msg->col -= req->size;
2116 msg->sov += req->size - offset; if (msg->sov >= req->size) msg->sov -= req->size;
2117 msg->sl.rq.u += req->size - offset; if (msg->sl.rq.u >= req->size) msg->sl.rq.u -= req->size;
2118 msg->sl.rq.v += req->size - offset; if (msg->sl.rq.v >= req->size) msg->sl.rq.v -= req->size;
2119
2120 if (msg->err_pos >= 0) {
2121 msg->err_pos += req->size - offset;
2122 if (msg->err_pos >= req->size)
2123 msg->err_pos -= req->size;
2124 }
2125
2126 req->flags &= ~BF_FULL;
2127 goto http_parse_again;
2128 }
2129
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2130 /* FIXME: check if URI is set and return Status
2131 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2132 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2133 goto return_bad_req;
2134 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2135
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2136 /* 2: have we encountered a read error ? */
2137 else if (req->flags & BF_READ_ERROR) {
2138 /* we cannot return any message on error */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2139 if (msg->err_pos >= 0)
2140 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2141 msg->msg_state = HTTP_MSG_ERROR;
2142 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2143
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2144 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2145 if (s->listener->counters)
2146 s->listener->counters->failed_req++;
2147
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2148 if (!(s->flags & SN_ERR_MASK))
2149 s->flags |= SN_ERR_CLICL;
2150 if (!(s->flags & SN_FINST_MASK))
2151 s->flags |= SN_FINST_R;
2152 return 0;
2153 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2154
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2155 /* 3: has the read timeout expired ? */
2156 else if (req->flags & BF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
2157 /* read timeout : give up with an error message. */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2158 if (msg->err_pos >= 0)
2159 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2160 txn->status = 408;
2161 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_408));
2162 msg->msg_state = HTTP_MSG_ERROR;
2163 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2164
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2165 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2166 if (s->listener->counters)
2167 s->listener->counters->failed_req++;
2168
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2169 if (!(s->flags & SN_ERR_MASK))
2170 s->flags |= SN_ERR_CLITO;
2171 if (!(s->flags & SN_FINST_MASK))
2172 s->flags |= SN_FINST_R;
2173 return 0;
2174 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2175
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2176 /* 4: have we encountered a close ? */
2177 else if (req->flags & BF_SHUTR) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2178 if (msg->err_pos >= 0)
2179 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2180 txn->status = 400;
2181 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
2182 msg->msg_state = HTTP_MSG_ERROR;
2183 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2184
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2185 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2186 if (s->listener->counters)
2187 s->listener->counters->failed_req++;
2188
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2189 if (!(s->flags & SN_ERR_MASK))
2190 s->flags |= SN_ERR_CLICL;
2191 if (!(s->flags & SN_FINST_MASK))
2192 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2193 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2194 }
2195
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2196 buffer_dont_connect(req);
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2197 req->flags |= BF_READ_DONTWAIT; /* try to get back here ASAP */
2198
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2199 /* just set the request timeout once at the beginning of the request */
2200 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]2201 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2202
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2203 /* we're not ready yet */
2204 return 0;
2205 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2206
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2207 /* OK now we have a complete HTTP request with indexed headers. Let's
2208 * complete the request parsing by setting a few fields we will need
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2209 * later. At this point, we have the last CRLF at req->data + msg->eoh.
2210 * If the request is in HTTP/0.9 form, the rule is still true, and eoh
2211 * points to the CRLF of the request line. req->lr points to the first
2212 * byte after the last LF. msg->col and msg->sov point to the first
2213 * byte of data. msg->eol cannot be trusted because it may have been
2214 * left uninitialized (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2215 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2216
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2217 /* Maybe we found in invalid header name while we were configured not
2218 * to block on that, so we have to capture it now.
2219 */
2220 if (unlikely(msg->err_pos >= 0))
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2221 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
2222
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2223 /* ensure we keep this pointer to the beginning of the message */
2224 msg->sol = req->data + msg->som;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2225
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2226 /*
2227 * 1: identify the method
2228 */
2229 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
2230
2231 /* we can make use of server redirect on GET and HEAD */
2232 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2233 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2234
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2235 /*
2236 * 2: check if the URI matches the monitor_uri.
2237 * We have to do this for every request which gets in, because
2238 * the monitor-uri is defined by the frontend.
2239 */
2240 if (unlikely((s->fe->monitor_uri_len != 0) &&
2241 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
2242 !memcmp(&req->data[msg->sl.rq.u],
2243 s->fe->monitor_uri,
2244 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2245 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2246 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2247 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2248 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2249
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2250 s->flags |= SN_MONITOR;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2251
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2252 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2253 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
2254 int ret = acl_exec_cond(cond, s->fe, s, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2255
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2256 ret = acl_pass(ret);
2257 if (cond->pol == ACL_COND_UNLESS)
2258 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2259
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2260 if (ret) {
2261 /* we fail this request, let's return 503 service unavail */
2262 txn->status = 503;
2263 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_503));
2264 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2265 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2266 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2267
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2268 /* nothing to fail, let's reply normaly */
2269 txn->status = 200;
2270 stream_int_retnclose(req->prod, &http_200_chunk);
2271 goto return_prx_cond;
2272 }
2273
2274 /*
2275 * 3: Maybe we have to copy the original REQURI for the logs ?
2276 * Note: we cannot log anymore if the request has been
2277 * classified as invalid.
2278 */
2279 if (unlikely(s->logs.logwait & LW_REQ)) {
2280 /* we have a complete HTTP request that we must log */
2281 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2282 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2283
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2284 if (urilen >= REQURI_LEN)
2285 urilen = REQURI_LEN - 1;
2286 memcpy(txn->uri, &req->data[msg->som], urilen);
2287 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2288
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2289 if (!(s->logs.logwait &= ~LW_REQ))
2290 s->do_log(s);
2291 } else {
2292 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2293 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2294 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2295
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2296 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2297 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(req, msg, txn))
2298 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2299
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2300 /* ... and check if the request is HTTP/1.1 or above */
2301 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]2302 ((req->data[msg->sl.rq.v + 5] > '1') ||
2303 ((req->data[msg->sl.rq.v + 5] == '1') &&
2304 (req->data[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2305 txn->flags |= TX_REQ_VER_11;
2306
2307 /* "connection" has not been parsed yet */
2308 txn->flags &= ~TX_CON_HDR_PARS;
2309
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2310 /* transfer length unknown*/
2311 txn->flags &= ~TX_REQ_XFER_LEN;
2312
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2313 /* 5: we may need to capture headers */
2314 if (unlikely((s->logs.logwait & LW_REQHDR) && s->fe->req_cap))
2315 capture_headers(req->data + msg->som, &txn->hdr_idx,
2316 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2317
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2318 /* 6: determine the transfer-length.
2319 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2320 * the presence of a message-body in a REQUEST and its transfer length
2321 * must be determined that way (in order of precedence) :
2322 * 1. The presence of a message-body in a request is signaled by the
2323 * inclusion of a Content-Length or Transfer-Encoding header field
2324 * in the request's header fields. When a request message contains
2325 * both a message-body of non-zero length and a method that does
2326 * not define any semantics for that request message-body, then an
2327 * origin server SHOULD either ignore the message-body or respond
2328 * with an appropriate error message (e.g., 413). A proxy or
2329 * gateway, when presented the same request, SHOULD either forward
2330 * the request inbound with the message- body or ignore the
2331 * message-body when determining a response.
2332 *
2333 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2334 * and the "chunked" transfer-coding (Section 6.2) is used, the
2335 * transfer-length is defined by the use of this transfer-coding.
2336 * If a Transfer-Encoding header field is present and the "chunked"
2337 * transfer-coding is not present, the transfer-length is defined
2338 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2339 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2340 * 3. If a Content-Length header field is present, its decimal value in
2341 * OCTETs represents both the entity-length and the transfer-length.
2342 * If a message is received with both a Transfer-Encoding header
2343 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2344 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2345 * 4. By the server closing the connection. (Closing the connection
2346 * cannot be used to indicate the end of a request body, since that
2347 * would leave no possibility for the server to send back a response.)
2348 *
2349 * Whenever a transfer-coding is applied to a message-body, the set of
2350 * transfer-codings MUST include "chunked", unless the message indicates
2351 * it is terminated by closing the connection. When the "chunked"
2352 * transfer-coding is used, it MUST be the last transfer-coding applied
2353 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2354 */
2355
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2356 /* CONNECT sets a tunnel and ignores everything else */
2357 if (txn->meth == HTTP_METH_CONNECT)
2358 goto skip_xfer_len;
2359
2360 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2361 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2362 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreau9e13c3c2009-12-22 09:59:58 +0100[diff] [blame]2363 while ((txn->flags & TX_REQ_VER_11) &&
2364 http_find_header2("Transfer-Encoding", 17, msg->sol, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2365 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
2366 txn->flags |= (TX_REQ_TE_CHNK | TX_REQ_XFER_LEN);
2367 else if (txn->flags & TX_REQ_TE_CHNK) {
2368 /* bad transfer-encoding (chunked followed by something else) */
2369 use_close_only = 1;
2370 txn->flags &= ~(TX_REQ_TE_CHNK | TX_REQ_XFER_LEN);
2371 break;
2372 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2373 }
2374
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2375 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2376 while (!(txn->flags & TX_REQ_TE_CHNK) && !use_close_only &&
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2377 http_find_header2("Content-Length", 14, msg->sol, &txn->hdr_idx, &ctx)) {
2378 signed long long cl;
2379
2380 if (!ctx.vlen)
2381 goto return_bad_req;
2382
2383 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl))
2384 goto return_bad_req; /* parse failure */
2385
2386 if (cl < 0)
2387 goto return_bad_req;
2388
2389 if ((txn->flags & TX_REQ_CNT_LEN) && (msg->hdr_content_len != cl))
2390 goto return_bad_req; /* already specified, was different */
2391
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2392 txn->flags |= TX_REQ_CNT_LEN | TX_REQ_XFER_LEN;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2393 msg->hdr_content_len = cl;
2394 }
2395
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2396 /* bodyless requests have a known length */
2397 if (!use_close_only)
2398 txn->flags |= TX_REQ_XFER_LEN;
2399
2400 skip_xfer_len:
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2401 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2402 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2403 req->analyse_exp = TICK_ETERNITY;
2404 return 1;
2405
2406 return_bad_req:
2407 /* We centralize bad requests processing here */
2408 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2409 /* we detected a parsing error. We want to archive this request
2410 * in the dedicated proxy area for later troubleshooting.
2411 */
2412 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
2413 }
2414
2415 txn->req.msg_state = HTTP_MSG_ERROR;
2416 txn->status = 400;
2417 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2418
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2419 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2420 if (s->listener->counters)
2421 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2422
2423 return_prx_cond:
2424 if (!(s->flags & SN_ERR_MASK))
2425 s->flags |= SN_ERR_PRXCOND;
2426 if (!(s->flags & SN_FINST_MASK))
2427 s->flags |= SN_FINST_R;
2428
2429 req->analysers = 0;
2430 req->analyse_exp = TICK_ETERNITY;
2431 return 0;
2432}
2433
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2434/* This stream analyser runs all HTTP request processing which is common to
2435 * frontends and backends, which means blocking ACLs, filters, connection-close,
2436 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2437 * 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]2438 * either needs more data or wants to immediately abort the request (eg: deny,
2439 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2440 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2441int 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]2442{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2443 struct http_txn *txn = &s->txn;
2444 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2445 struct acl_cond *cond;
2446 struct redirect_rule *rule;
2447 int cur_idx;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2448
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2449 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2450 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2451 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2452 return 0;
2453 }
2454
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2455 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2456 req->analyse_exp = TICK_ETERNITY;
2457
2458 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
2459 now_ms, __FUNCTION__,
2460 s,
2461 req,
2462 req->rex, req->wex,
2463 req->flags,
2464 req->l,
2465 req->analysers);
2466
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2467 /* first check whether we have some ACLs set to block this request */
2468 list_for_each_entry(cond, &px->block_cond, list) {
2469 int ret = acl_exec_cond(cond, px, s, txn, ACL_DIR_REQ);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]2470
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2471 ret = acl_pass(ret);
2472 if (cond->pol == ACL_COND_UNLESS)
2473 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2474
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2475 if (ret) {
2476 txn->status = 403;
2477 /* let's log the request time */
2478 s->logs.tv_request = now;
2479 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
2480 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2481 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2482 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2483
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2484 /* try headers filters */
2485 if (px->req_exp != NULL) {
2486 if (apply_filters_to_request(s, req, px->req_exp) < 0)
2487 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2488
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2489 /* has the request been denied ? */
2490 if (txn->flags & TX_CLDENY) {
2491 /* no need to go further */
2492 txn->status = 403;
2493 /* let's log the request time */
2494 s->logs.tv_request = now;
2495 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
2496 goto return_prx_cond;
2497 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2498
2499 /* When a connection is tarpitted, we use the tarpit timeout,
2500 * which may be the same as the connect timeout if unspecified.
2501 * If unset, then set it to zero because we really want it to
2502 * eventually expire. We build the tarpit as an analyser.
2503 */
2504 if (txn->flags & TX_CLTARPIT) {
2505 buffer_erase(s->req);
2506 /* wipe the request out so that we can drop the connection early
2507 * if the client closes first.
2508 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2509 buffer_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2510 req->analysers = 0; /* remove switching rules etc... */
2511 req->analysers |= AN_REQ_HTTP_TARPIT;
2512 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
2513 if (!req->analyse_exp)
2514 req->analyse_exp = tick_add(now_ms, 0);
2515 return 1;
2516 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2517 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2518
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2519 /* Until set to anything else, the connection mode is set as TUNNEL. It will
2520 * only change if both the request and the config reference something else.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2521 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2522
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2523 if ((txn->meth != HTTP_METH_CONNECT) &&
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2524 ((s->fe->options|s->be->options) & (PR_O_KEEPALIVE|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
2525 int tmp = TX_CON_WANT_TUN;
2526 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE)
2527 tmp = TX_CON_WANT_KAL;
2528 /* FIXME: for now, we don't support server-close mode */
2529 if ((s->fe->options|s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))
2530 tmp = TX_CON_WANT_CLO;
2531
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2532 if (!(txn->flags & TX_REQ_XFER_LEN))
2533 tmp = TX_CON_WANT_CLO;
2534
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2535 if (!(txn->flags & TX_CON_HDR_PARS))
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2536 http_req_parse_connection_header(txn);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2537
2538 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2539 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2540 }
2541
2542 /* We're really certain of the connection mode (tunnel, close, keep-alive)
2543 * once we know the backend, because the tunnel mode can be implied by the
2544 * lack of any close/keepalive options in both the FE and the BE. Since
2545 * this information can evolve with time, we proceed by trying to make the
2546 * header status match the desired status. For this, we'll have to adjust
2547 * the "Connection" header. The test for persistent connections has already
2548 * been performed, so we only enter here if there is a risk the connection
2549 * is considered as persistent and we want it to be closed on the server
2550 * side. It would be nice if we could enter this place only when a
2551 * Connection header exists. Note that a CONNECT method will not enter
2552 * here.
2553 */
2554 if (!(txn->flags & TX_REQ_CONN_CLO) && ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL)) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2555 char *cur_ptr, *cur_end, *cur_next;
2556 int old_idx, delta, val;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2557 int must_delete;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2558 struct hdr_idx_elem *cur_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2559
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2560 must_delete = !(txn->flags & TX_REQ_VER_11);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2561 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2562
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2563 for (old_idx = 0; (cur_idx = txn->hdr_idx.v[old_idx].next); old_idx = cur_idx) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2564 cur_hdr = &txn->hdr_idx.v[cur_idx];
2565 cur_ptr = cur_next;
2566 cur_end = cur_ptr + cur_hdr->len;
2567 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2568
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2569 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2570 if (!val)
2571 continue;
2572
2573 /* 3 possibilities :
2574 * - we have already set "Connection: close" or we're in
2575 * HTTP/1.0, so we remove this line.
2576 * - we have not yet set "Connection: close", but this line
2577 * indicates close. We leave it untouched and set the flag.
2578 * - we have not yet set "Connection: close", and this line
2579 * indicates non-close. We replace it and set the flag.
2580 */
2581 if (must_delete) {
2582 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
2583 http_msg_move_end(&txn->req, delta);
2584 cur_next += delta;
2585 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2586 txn->hdr_idx.used--;
2587 cur_hdr->len = 0;
2588 txn->flags |= TX_REQ_CONN_CLO;
2589 } else {
2590 if (cur_end - cur_ptr - val != 5 ||
2591 strncasecmp(cur_ptr + val, "close", 5) != 0) {
2592 delta = buffer_replace2(req, cur_ptr + val, cur_end,
2593 "close", 5);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2594 cur_next += delta;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2595 cur_hdr->len += delta;
2596 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2597 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2598 txn->flags |= TX_REQ_CONN_CLO;
2599 must_delete = 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2600 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2601 } /* for loop */
2602 } /* if must close keep-alive */
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2603
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2604 /* add request headers from the rule sets in the same order */
2605 for (cur_idx = 0; cur_idx < px->nb_reqadd; cur_idx++) {
2606 if (unlikely(http_header_add_tail(req,
2607 &txn->req,
2608 &txn->hdr_idx,
2609 px->req_add[cur_idx])) < 0)
2610 goto return_bad_req;
2611 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2612
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2613 /* check if stats URI was requested, and if an auth is needed */
2614 if (px->uri_auth != NULL &&
2615 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
2616 /* we have to check the URI and auth for this request.
2617 * FIXME!!! that one is rather dangerous, we want to
2618 * make it follow standard rules (eg: clear req->analysers).
2619 */
2620 if (stats_check_uri_auth(s, px)) {
2621 req->analysers = 0;
2622 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2623 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2624 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2625
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2626 /* check whether we have some ACLs set to redirect this request */
2627 list_for_each_entry(rule, &px->redirect_rules, list) {
2628 int ret = acl_exec_cond(rule->cond, px, s, txn, ACL_DIR_REQ);
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2629
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2630 ret = acl_pass(ret);
2631 if (rule->cond->pol == ACL_COND_UNLESS)
2632 ret = !ret;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2633
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2634 if (ret) {
2635 struct chunk rdr = { trash, 0 };
2636 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2637
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2638 /* build redirect message */
2639 switch(rule->code) {
2640 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2641 msg_fmt = HTTP_303;
2642 break;
2643 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2644 msg_fmt = HTTP_301;
2645 break;
2646 case 302:
2647 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2648 msg_fmt = HTTP_302;
2649 break;
2650 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2651
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2652 if (unlikely(chunk_strcpy(&rdr, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2653 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2654
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2655 switch(rule->type) {
2656 case REDIRECT_TYPE_PREFIX: {
2657 const char *path;
2658 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2659
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2660 path = http_get_path(txn);
2661 /* build message using path */
2662 if (path) {
2663 pathlen = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
2664 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
2665 int qs = 0;
2666 while (qs < pathlen) {
2667 if (path[qs] == '?') {
2668 pathlen = qs;
2669 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2670 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2671 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2672 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2673 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2674 } else {
2675 path = "/";
2676 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2677 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2678
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2679 if (rdr.len + rule->rdr_len + pathlen > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2680 goto return_bad_req;
2681
2682 /* add prefix. Note that if prefix == "/", we don't want to
2683 * add anything, otherwise it makes it hard for the user to
2684 * configure a self-redirection.
2685 */
2686 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2687 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2688 rdr.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2689 }
2690
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2691 /* add path */
2692 memcpy(rdr.str + rdr.len, path, pathlen);
2693 rdr.len += pathlen;
2694 break;
2695 }
2696 case REDIRECT_TYPE_LOCATION:
2697 default:
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2698 if (rdr.len + rule->rdr_len > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2699 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2700
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2701 /* add location */
2702 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2703 rdr.len += rule->rdr_len;
2704 break;
2705 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2706
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2707 if (rule->cookie_len) {
2708 memcpy(rdr.str + rdr.len, "\r\nSet-Cookie: ", 14);
2709 rdr.len += 14;
2710 memcpy(rdr.str + rdr.len, rule->cookie_str, rule->cookie_len);
2711 rdr.len += rule->cookie_len;
2712 memcpy(rdr.str + rdr.len, "\r\n", 2);
2713 rdr.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2714 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2715
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2716 /* add end of headers */
2717 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
2718 rdr.len += 4;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2719
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2720 txn->status = rule->code;
2721 /* let's log the request time */
2722 s->logs.tv_request = now;
2723 stream_int_retnclose(req->prod, &rdr);
2724 goto return_prx_cond;
2725 }
2726 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2727
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]2728 /* We can shut read side if we know how we won't transfer any more data && !abort_on_close */
2729 if ((txn->flags & TX_REQ_XFER_LEN) &&
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2730 !(txn->flags & TX_REQ_TE_CHNK) && !txn->req.hdr_content_len &&
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]2731 (req->cons->state == SI_ST_EST || !(s->be->options & PR_O_ABRT_CLOSE)))
Willy Tarreau349a0f62009-10-18 21:17:42 +0200[diff] [blame]2732 req->flags |= BF_DONT_READ;
Willy Tarreauf1ba4b32009-10-17 14:37:52 +0200[diff] [blame]2733
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2734 /* that's OK for us now, let's move on to next analysers */
2735 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2736
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2737 return_bad_req:
2738 /* We centralize bad requests processing here */
2739 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2740 /* we detected a parsing error. We want to archive this request
2741 * in the dedicated proxy area for later troubleshooting.
2742 */
2743 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
2744 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2745
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2746 txn->req.msg_state = HTTP_MSG_ERROR;
2747 txn->status = 400;
2748 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2749
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2750 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2751 if (s->listener->counters)
2752 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2753
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2754 return_prx_cond:
2755 if (!(s->flags & SN_ERR_MASK))
2756 s->flags |= SN_ERR_PRXCOND;
2757 if (!(s->flags & SN_FINST_MASK))
2758 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2759
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2760 req->analysers = 0;
2761 req->analyse_exp = TICK_ETERNITY;
2762 return 0;
2763}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2764
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2765/* This function performs all the processing enabled for the current request.
2766 * It returns 1 if the processing can continue on next analysers, or zero if it
2767 * needs more data, encounters an error, or wants to immediately abort the
2768 * request. It relies on buffers flags, and updates s->req->analysers.
2769 */
2770int http_process_request(struct session *s, struct buffer *req, int an_bit)
2771{
2772 struct http_txn *txn = &s->txn;
2773 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2774
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2775 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2776 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2777 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2778 return 0;
2779 }
2780
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2781 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
2782 now_ms, __FUNCTION__,
2783 s,
2784 req,
2785 req->rex, req->wex,
2786 req->flags,
2787 req->l,
2788 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2789
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2790 /*
2791 * Right now, we know that we have processed the entire headers
2792 * and that unwanted requests have been filtered out. We can do
2793 * whatever we want with the remaining request. Also, now we
2794 * may have separate values for ->fe, ->be.
2795 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2796
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2797 /*
2798 * If HTTP PROXY is set we simply get remote server address
2799 * parsing incoming request.
2800 */
2801 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
2802 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &s->srv_addr);
2803 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2804
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2805 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]2806 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2807 * Note that doing so might move headers in the request, but
2808 * the fields will stay coherent and the URI will not move.
2809 * This should only be performed in the backend.
2810 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]2811 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2812 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
2813 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2814
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2815 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]2816 * 8: the appsession cookie was looked up very early in 1.2,
2817 * so let's do the same now.
2818 */
2819
2820 /* It needs to look into the URI */
2821 if ((s->sessid == NULL) && s->be->appsession_name) {
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]2822 get_srv_from_appsession(s, &req->data[msg->sl.rq.u], msg->sl.rq.u_l);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]2823 }
2824
2825 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2826 * 9: add X-Forwarded-For if either the frontend or the backend
2827 * asks for it.
2828 */
2829 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
2830 if (s->cli_addr.ss_family == AF_INET) {
2831 /* Add an X-Forwarded-For header unless the source IP is
2832 * in the 'except' network range.
2833 */
2834 if ((!s->fe->except_mask.s_addr ||
2835 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->fe->except_mask.s_addr)
2836 != s->fe->except_net.s_addr) &&
2837 (!s->be->except_mask.s_addr ||
2838 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->be->except_mask.s_addr)
2839 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2840 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2841 unsigned char *pn;
2842 pn = (unsigned char *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2843
2844 /* Note: we rely on the backend to get the header name to be used for
2845 * x-forwarded-for, because the header is really meant for the backends.
2846 * However, if the backend did not specify any option, we have to rely
2847 * on the frontend's header name.
2848 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2849 if (s->be->fwdfor_hdr_len) {
2850 len = s->be->fwdfor_hdr_len;
2851 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2852 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2853 len = s->fe->fwdfor_hdr_len;
2854 memcpy(trash, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]2855 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2856 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]2857
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2858 if (unlikely(http_header_add_tail2(req, &txn->req,
2859 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2860 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2861 }
2862 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2863 else if (s->cli_addr.ss_family == AF_INET6) {
2864 /* FIXME: for the sake of completeness, we should also support
2865 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2866 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2867 int len;
2868 char pn[INET6_ADDRSTRLEN];
2869 inet_ntop(AF_INET6,
2870 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
2871 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2872
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2873 /* Note: we rely on the backend to get the header name to be used for
2874 * x-forwarded-for, because the header is really meant for the backends.
2875 * However, if the backend did not specify any option, we have to rely
2876 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2877 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2878 if (s->be->fwdfor_hdr_len) {
2879 len = s->be->fwdfor_hdr_len;
2880 memcpy(trash, s->be->fwdfor_hdr_name, len);
2881 } else {
2882 len = s->fe->fwdfor_hdr_len;
2883 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2884 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2885 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2886
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2887 if (unlikely(http_header_add_tail2(req, &txn->req,
2888 &txn->hdr_idx, trash, len)) < 0)
2889 goto return_bad_req;
2890 }
2891 }
2892
2893 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]2894 * 10: add X-Original-To if either the frontend or the backend
2895 * asks for it.
2896 */
2897 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
2898
2899 /* FIXME: don't know if IPv6 can handle that case too. */
2900 if (s->cli_addr.ss_family == AF_INET) {
2901 /* Add an X-Original-To header unless the destination IP is
2902 * in the 'except' network range.
2903 */
2904 if (!(s->flags & SN_FRT_ADDR_SET))
2905 get_frt_addr(s);
2906
2907 if ((!s->fe->except_mask_to.s_addr ||
2908 (((struct sockaddr_in *)&s->frt_addr)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
2909 != s->fe->except_to.s_addr) &&
2910 (!s->be->except_mask_to.s_addr ||
2911 (((struct sockaddr_in *)&s->frt_addr)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
2912 != s->be->except_to.s_addr)) {
2913 int len;
2914 unsigned char *pn;
2915 pn = (unsigned char *)&((struct sockaddr_in *)&s->frt_addr)->sin_addr;
2916
2917 /* Note: we rely on the backend to get the header name to be used for
2918 * x-original-to, because the header is really meant for the backends.
2919 * However, if the backend did not specify any option, we have to rely
2920 * on the frontend's header name.
2921 */
2922 if (s->be->orgto_hdr_len) {
2923 len = s->be->orgto_hdr_len;
2924 memcpy(trash, s->be->orgto_hdr_name, len);
2925 } else {
2926 len = s->fe->orgto_hdr_len;
2927 memcpy(trash, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]2928 }
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]2929 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
2930
2931 if (unlikely(http_header_add_tail2(req, &txn->req,
2932 &txn->hdr_idx, trash, len)) < 0)
2933 goto return_bad_req;
2934 }
2935 }
2936 }
2937
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2938 /* 11: add "Connection: close" if needed and not yet set. */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2939 if (!(txn->flags & TX_REQ_CONN_CLO) && ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL)) {
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2940 if (unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2941 "Connection: close", 17)) < 0)
2942 goto return_bad_req;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2943 txn->flags |= TX_REQ_CONN_CLO;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2944 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]2945
2946 /* If we have no server assigned yet and we're balancing on url_param
2947 * with a POST request, we may be interested in checking the body for
2948 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2949 */
2950 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
2951 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]2952 s->be->url_param_post_limit != 0 &&
2953 (txn->flags & (TX_REQ_CNT_LEN|TX_REQ_TE_CHNK)) &&
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]2954 memchr(req->data + msg->sl.rq.u, '?', msg->sl.rq.u_l) == NULL) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]2955 buffer_dont_connect(req);
2956 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2957 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2958
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]2959 if (txn->flags & TX_REQ_XFER_LEN)
2960 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]2961
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2962 /*************************************************************
2963 * OK, that's finished for the headers. We have done what we *
2964 * could. Let's switch to the DATA state. *
2965 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]2966 req->analyse_exp = TICK_ETERNITY;
2967 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2968
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2969 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2970 /* OK let's go on with the BODY now */
2971 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2972
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2973 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2974 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2975 /* we detected a parsing error. We want to archive this request
2976 * in the dedicated proxy area for later troubleshooting.
2977 */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2978 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2979 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2980
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2981 txn->req.msg_state = HTTP_MSG_ERROR;
2982 txn->status = 400;
2983 req->analysers = 0;
2984 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2985
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2986 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2987 if (s->listener->counters)
2988 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2989
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2990 if (!(s->flags & SN_ERR_MASK))
2991 s->flags |= SN_ERR_PRXCOND;
2992 if (!(s->flags & SN_FINST_MASK))
2993 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2994 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2995}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2996
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2997/* This function is an analyser which processes the HTTP tarpit. It always
2998 * returns zero, at the beginning because it prevents any other processing
2999 * from occurring, and at the end because it terminates the request.
3000 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3001int http_process_tarpit(struct session *s, struct buffer *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3002{
3003 struct http_txn *txn = &s->txn;
3004
3005 /* This connection is being tarpitted. The CLIENT side has
3006 * already set the connect expiration date to the right
3007 * timeout. We just have to check that the client is still
3008 * there and that the timeout has not expired.
3009 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]3010 buffer_dont_connect(req);
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3011 if ((req->flags & (BF_SHUTR|BF_READ_ERROR)) == 0 &&
3012 !tick_is_expired(req->analyse_exp, now_ms))
3013 return 0;
3014
3015 /* We will set the queue timer to the time spent, just for
3016 * logging purposes. We fake a 500 server error, so that the
3017 * attacker will not suspect his connection has been tarpitted.
3018 * It will not cause trouble to the logs because we can exclude
3019 * the tarpitted connections by filtering on the 'PT' status flags.
3020 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3021 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3022
3023 txn->status = 500;
3024 if (req->flags != BF_READ_ERROR)
3025 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_500));
3026
3027 req->analysers = 0;
3028 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3029
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3030 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3031 if (s->listener->counters)
3032 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3033
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3034 if (!(s->flags & SN_ERR_MASK))
3035 s->flags |= SN_ERR_PRXCOND;
3036 if (!(s->flags & SN_FINST_MASK))
3037 s->flags |= SN_FINST_T;
3038 return 0;
3039}
3040
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3041/* This function is an analyser which processes the HTTP request body. It looks
3042 * for parameters to be used for the load balancing algorithm (url_param). It
3043 * must only be called after the standard HTTP request processing has occurred,
3044 * because it expects the request to be parsed. It returns zero if it needs to
3045 * read more data, or 1 once it has completed its analysis.
3046 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3047int http_process_request_body(struct session *s, struct buffer *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3048{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3049 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3050 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3051 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3052
3053 /* We have to parse the HTTP request body to find any required data.
3054 * "balance url_param check_post" should have been the only way to get
3055 * into this. We were brought here after HTTP header analysis, so all
3056 * related structures are ready.
3057 */
3058
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3059 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3060 goto missing_data;
3061
3062 if (msg->msg_state < HTTP_MSG_100_SENT) {
3063 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3064 * send an HTTP/1.1 100 Continue intermediate response.
3065 */
Willy Tarreau9e13c3c2009-12-22 09:59:58 +0100[diff] [blame]3066 if (txn->flags & TX_REQ_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3067 struct hdr_ctx ctx;
3068 ctx.idx = 0;
3069 /* Expect is allowed in 1.1, look for it */
3070 if (http_find_header2("Expect", 6, msg->sol, &txn->hdr_idx, &ctx) &&
3071 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
3072 buffer_write(s->rep, http_100_chunk.str, http_100_chunk.len);
3073 }
3074 }
3075 msg->msg_state = HTTP_MSG_100_SENT;
3076 }
3077
3078 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]3079 /* we have msg->col and msg->sov which both point to the first
3080 * byte of message body. msg->som still points to the beginning
3081 * of the message. We must save the body in req->lr because it
3082 * survives buffer re-alignments.
3083 */
3084 req->lr = req->data + msg->sov;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3085 if (txn->flags & TX_REQ_TE_CHNK)
3086 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3087 else
3088 msg->msg_state = HTTP_MSG_DATA;
3089 }
3090
3091 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3092 /* read the chunk size and assign it to ->hdr_content_len, then
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]3093 * set ->sov and ->lr to point to the body and switch to DATA or
3094 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3095 */
3096 int ret = http_parse_chunk_size(req, msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3097
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3098 if (!ret)
3099 goto missing_data;
3100 else if (ret < 0)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3101 goto return_bad_req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3102 }
3103
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]3104 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3105 * We have the first non-header byte in msg->col, which is either the
3106 * beginning of the chunk size or of the data. The first data byte is in
3107 * msg->sov, which is equal to msg->col when not using transfer-encoding.
3108 * We're waiting for at least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3109 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3110
3111 if (msg->hdr_content_len < limit)
3112 limit = msg->hdr_content_len;
3113
Willy Tarreau7c96f672009-12-27 22:47:25 +0100[diff] [blame]3114 if (req->l - (msg->sov - msg->som) >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3115 goto http_end;
3116
3117 missing_data:
3118 /* we get here if we need to wait for more data */
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3119 if (req->flags & BF_FULL)
3120 goto return_bad_req;
3121
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3122 if ((req->flags & BF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
3123 txn->status = 408;
3124 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_408));
3125 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3126 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3127
3128 /* we get here if we need to wait for more data */
3129 if (!(req->flags & (BF_FULL | BF_READ_ERROR | BF_SHUTR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3130 /* Not enough data. We'll re-use the http-request
3131 * timeout here. Ideally, we should set the timeout
3132 * relative to the accept() date. We just set the
3133 * request timeout once at the beginning of the
3134 * request.
3135 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]3136 buffer_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3137 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3138 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3139 return 0;
3140 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3141
3142 http_end:
3143 /* The situation will not evolve, so let's give up on the analysis. */
3144 s->logs.tv_request = now; /* update the request timer to reflect full request */
3145 req->analysers &= ~an_bit;
3146 req->analyse_exp = TICK_ETERNITY;
3147 return 1;
3148
3149 return_bad_req: /* let's centralize all bad requests */
3150 txn->req.msg_state = HTTP_MSG_ERROR;
3151 txn->status = 400;
3152 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
3153
3154 return_err_msg:
3155 req->analysers = 0;
3156 s->fe->counters.failed_req++;
3157 if (s->listener->counters)
3158 s->listener->counters->failed_req++;
3159
3160 if (!(s->flags & SN_ERR_MASK))
3161 s->flags |= SN_ERR_PRXCOND;
3162 if (!(s->flags & SN_FINST_MASK))
3163 s->flags |= SN_FINST_R;
3164 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3165}
3166
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]3167/* This function is an analyser which forwards request body (including chunk
3168 * sizes if any). It is called as soon as we must forward, even if we forward
3169 * zero byte. The only situation where it must not be called is when we're in
3170 * tunnel mode and we want to forward till the close. It's used both to forward
3171 * remaining data and to resync after end of body. It expects the msg_state to
3172 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
3173 * read more data, or 1 once we can go on with next request or end the session.
3174 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward hdr_content_len
3175 * bytes of pending data + the headers if not already done (between som and sov).
3176 * It eventually adjusts som to match sov after the data in between have been sent.
3177 */
3178int http_request_forward_body(struct session *s, struct buffer *req, int an_bit)
3179{
3180 struct http_txn *txn = &s->txn;
3181 struct http_msg *msg = &s->txn.req;
3182
3183 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3184 return 0;
3185
3186 /* Note that we don't have to send 100-continue back because we don't
3187 * need the data to complete our job, and it's up to the server to
3188 * decide whether to return 100, 417 or anything else in return of
3189 * an "Expect: 100-continue" header.
3190 */
3191
3192 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
3193 /* we have msg->col and msg->sov which both point to the first
3194 * byte of message body. msg->som still points to the beginning
3195 * of the message. We must save the body in req->lr because it
3196 * survives buffer re-alignments.
3197 */
3198 req->lr = req->data + msg->sov;
3199 if (txn->flags & TX_REQ_TE_CHNK)
3200 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3201 else {
3202 msg->msg_state = HTTP_MSG_DATA;
3203 }
3204 }
3205
3206 /* we may already have some data pending */
3207 if (msg->hdr_content_len || msg->som != msg->sov) {
3208 buffer_forward(req, msg->sov - msg->som + msg->hdr_content_len);
3209 msg->hdr_content_len = 0; /* don't forward that again */
3210 msg->som = msg->sov;
3211 }
3212
3213 while (1) {
3214 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
3215 /* read the chunk size and assign it to ->hdr_content_len, then
3216 * set ->sov and ->lr to point to the body and switch to DATA or
3217 * TRAILERS state.
3218 */
3219 int ret = http_parse_chunk_size(req, msg);
3220
3221 if (!ret)
3222 goto missing_data;
3223 else if (ret < 0)
3224 goto return_bad_req;
3225 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
3226
3227 /* forward the chunk size as well as any pending data */
3228 if (msg->hdr_content_len || msg->som != msg->sov) {
3229 buffer_forward(req, msg->sov - msg->som + msg->hdr_content_len);
3230 msg->hdr_content_len = 0; /* don't forward that again */
3231 msg->som = msg->sov;
3232 }
3233 }
3234 else if (msg->msg_state == HTTP_MSG_DATA) {
3235 /* must still forward */
3236 if (req->to_forward)
3237 return 0;
3238
3239 /* we're sending the last bits of request, the server's response
3240 * is expected in a short time. Most often the first read is enough
3241 * to bring all the headers, so we're preparing the response buffer
3242 * to read the response now. Note that we should probably move that
3243 * to a more appropriate place.
3244 */
3245 s->rep->flags |= BF_READ_DONTWAIT;
3246
3247 /* nothing left to forward */
3248 if (txn->flags & TX_REQ_TE_CHNK)
3249 msg->msg_state = HTTP_MSG_DATA_CRLF;
3250 else {
3251 msg->msg_state = HTTP_MSG_DONE;
3252 }
3253 }
3254 else if (msg->msg_state == HTTP_MSG_DATA_CRLF) {
3255 /* we want the CRLF after the data */
3256 int ret;
3257
3258 if (!(req->flags & BF_OUT_EMPTY))
3259 return 0;
3260 /* The output pointer does not move anymore, next unsent data
3261 * are available at ->w. Let's save that.
3262 */
3263 req->lr = req->w;
3264 ret = http_skip_chunk_crlf(req, msg);
3265
3266 if (ret == 0)
3267 goto missing_data;
3268 else if (ret < 0)
3269 goto return_bad_req;
3270 /* we're in MSG_CHUNK_SIZE now */
3271 }
3272 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
3273 int ret = http_forward_trailers(req, msg);
3274
3275 if (ret == 0)
3276 goto missing_data;
3277 else if (ret < 0)
3278 goto return_bad_req;
3279 /* we're in HTTP_MSG_DONE now */
3280 }
3281 else if (msg->msg_state == HTTP_MSG_DONE) {
3282 /* No need to read anymore, the request is complete */
3283 req->flags |= BF_DONT_READ;
3284
3285 if (!(s->req->flags & BF_OUT_EMPTY) || s->req->to_forward)
3286 return 0;
3287
3288 if (!(s->rep->flags & BF_OUT_EMPTY) || s->rep->to_forward)
3289 return 0;
3290
3291 if (txn->rsp.msg_state != HTTP_MSG_DONE && txn->rsp.msg_state != HTTP_MSG_ERROR) {
3292 /* OK the request was completely sent, re-enable
3293 * reading on server side but return immediately.
3294 * FIXME: we should probably move that somewhere else !
3295 */
3296 s->rep->flags &= ~BF_DONT_READ;
3297 return 0;
3298 }
3299
3300 /* when we support keep-alive or server-close modes, we'll have
3301 * to reset the transaction here.
3302 */
3303 req->flags &= ~BF_DONT_READ; /* re-enable reading on client side */
3304 break;
3305 }
3306 }
3307
3308 /* OK we're done with the data phase */
3309 req->analysers &= ~an_bit;
3310 return 1;
3311
3312 missing_data:
3313 /* forward the chunk size as well as any pending data */
3314 if (msg->hdr_content_len || msg->som != msg->sov) {
3315 buffer_forward(req, msg->sov - msg->som + msg->hdr_content_len);
3316 msg->hdr_content_len = 0; /* don't forward that again */
3317 msg->som = msg->sov;
3318 }
3319
3320 if (req->flags & BF_FULL)
3321 goto return_bad_req;
3322 /* the session handler will take care of timeouts and errors */
3323 return 0;
3324
3325 return_bad_req: /* let's centralize all bad requests */
3326 txn->req.msg_state = HTTP_MSG_ERROR;
3327 txn->status = 400;
3328 /* Note: we don't send any error if some data were already sent */
3329 stream_int_cond_close(req->prod, (txn->rsp.msg_state < HTTP_MSG_BODY) ? error_message(s, HTTP_ERR_400) : NULL);
3330
3331 req->analysers = 0;
3332 s->fe->counters.failed_req++;
3333 if (s->listener->counters)
3334 s->listener->counters->failed_req++;
3335
3336 if (!(s->flags & SN_ERR_MASK))
3337 s->flags |= SN_ERR_PRXCOND;
3338 if (!(s->flags & SN_FINST_MASK))
3339 s->flags |= SN_FINST_R;
3340 return 0;
3341}
3342
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3343/* This stream analyser waits for a complete HTTP response. It returns 1 if the
3344 * processing can continue on next analysers, or zero if it either needs more
3345 * data or wants to immediately abort the response (eg: timeout, error, ...). It
3346 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
3347 * when it has nothing left to do, and may remove any analyser when it wants to
3348 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3349 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3350int http_wait_for_response(struct session *s, struct buffer *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3351{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3352 struct http_txn *txn = &s->txn;
3353 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]3354 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3355 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3356 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]3357 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3358
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]3359 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]3360 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3361 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]3362 rep,
3363 rep->rex, rep->wex,
3364 rep->flags,
3365 rep->l,
3366 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]3367
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3368 /*
3369 * Now parse the partial (or complete) lines.
3370 * We will check the response syntax, and also join multi-line
3371 * headers. An index of all the lines will be elaborated while
3372 * parsing.
3373 *
3374 * For the parsing, we use a 28 states FSM.
3375 *
3376 * Here is the information we currently have :
3377 * rep->data + rep->som = beginning of response
3378 * rep->data + rep->eoh = end of processed headers / start of current one
3379 * rep->data + rep->eol = end of current header or line (LF or CRLF)
3380 * rep->lr = first non-visited byte
3381 * rep->r = end of data
3382 */
3383
3384 if (likely(rep->lr < rep->r))
3385 http_msg_analyzer(rep, msg, &txn->hdr_idx);
Willy Tarreau7f875f62008-08-11 17:35:01 +0200[diff] [blame]3386
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3387 /* 1: we might have to print this header in debug mode */
3388 if (unlikely((global.mode & MODE_DEBUG) &&
3389 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3390 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3391 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3392
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3393 sol = rep->data + msg->som;
3394 eol = sol + msg->sl.rq.l;
3395 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3396
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3397 sol += hdr_idx_first_pos(&txn->hdr_idx);
3398 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3399
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3400 while (cur_idx) {
3401 eol = sol + txn->hdr_idx.v[cur_idx].len;
3402 debug_hdr("srvhdr", s, sol, eol);
3403 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
3404 cur_idx = txn->hdr_idx.v[cur_idx].next;
3405 }
3406 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3407
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3408 /*
3409 * Now we quickly check if we have found a full valid response.
3410 * If not so, we check the FD and buffer states before leaving.
3411 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3412 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3413 * responses are checked first.
3414 *
3415 * Depending on whether the client is still there or not, we
3416 * may send an error response back or not. Note that normally
3417 * we should only check for HTTP status there, and check I/O
3418 * errors somewhere else.
3419 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3420
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3421 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3422 /* Invalid response */
3423 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
3424 /* we detected a parsing error. We want to archive this response
3425 * in the dedicated proxy area for later troubleshooting.
3426 */
3427 hdr_response_bad:
3428 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
3429 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
3430
3431 s->be->counters.failed_resp++;
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]3432 if (s->srv) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3433 s->srv->counters.failed_resp++;
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]3434 health_adjust(s->srv, HANA_STATUS_HTTP_HDRRSP);
3435 }
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3436
3437 rep->analysers = 0;
3438 txn->status = 502;
3439 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
3440
3441 if (!(s->flags & SN_ERR_MASK))
3442 s->flags |= SN_ERR_PRXCOND;
3443 if (!(s->flags & SN_FINST_MASK))
3444 s->flags |= SN_FINST_H;
3445
3446 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3447 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3448
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3449 /* too large response does not fit in buffer. */
3450 else if (rep->flags & BF_FULL) {
3451 goto hdr_response_bad;
3452 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3453
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3454 /* read error */
3455 else if (rep->flags & BF_READ_ERROR) {
3456 if (msg->err_pos >= 0)
3457 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3458
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3459 s->be->counters.failed_resp++;
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]3460 if (s->srv) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3461 s->srv->counters.failed_resp++;
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]3462 health_adjust(s->srv, HANA_STATUS_HTTP_READ_ERROR);
3463 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]3464
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3465 rep->analysers = 0;
3466 txn->status = 502;
3467 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3468
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3469 if (!(s->flags & SN_ERR_MASK))
3470 s->flags |= SN_ERR_SRVCL;
3471 if (!(s->flags & SN_FINST_MASK))
3472 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]3473 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3474 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3475
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3476 /* read timeout : return a 504 to the client. */
3477 else if (rep->flags & BF_READ_TIMEOUT) {
3478 if (msg->err_pos >= 0)
3479 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3480
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3481 s->be->counters.failed_resp++;
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]3482 if (s->srv) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3483 s->srv->counters.failed_resp++;
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]3484 health_adjust(s->srv, HANA_STATUS_HTTP_READ_TIMEOUT);
3485 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3486
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3487 rep->analysers = 0;
3488 txn->status = 504;
3489 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3490
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3491 if (!(s->flags & SN_ERR_MASK))
3492 s->flags |= SN_ERR_SRVTO;
3493 if (!(s->flags & SN_FINST_MASK))
3494 s->flags |= SN_FINST_H;
3495 return 0;
3496 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]3497
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3498 /* close from server */
3499 else if (rep->flags & BF_SHUTR) {
3500 if (msg->err_pos >= 0)
3501 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3502
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3503 s->be->counters.failed_resp++;
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]3504 if (s->srv) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3505 s->srv->counters.failed_resp++;
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]3506 health_adjust(s->srv, HANA_STATUS_HTTP_BROKEN_PIPE);
3507 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3508
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3509 rep->analysers = 0;
3510 txn->status = 502;
3511 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3512
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3513 if (!(s->flags & SN_ERR_MASK))
3514 s->flags |= SN_ERR_SRVCL;
3515 if (!(s->flags & SN_FINST_MASK))
3516 s->flags |= SN_FINST_H;
3517 return 0;
3518 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]3519
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3520 /* write error to client (we don't send any message then) */
3521 else if (rep->flags & BF_WRITE_ERROR) {
3522 if (msg->err_pos >= 0)
3523 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]3524
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3525 s->be->counters.failed_resp++;
3526 rep->analysers = 0;
3527
3528 if (!(s->flags & SN_ERR_MASK))
3529 s->flags |= SN_ERR_CLICL;
3530 if (!(s->flags & SN_FINST_MASK))
3531 s->flags |= SN_FINST_H;
3532
3533 /* process_session() will take care of the error */
3534 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3535 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3536
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3537 buffer_dont_close(rep);
3538 return 0;
3539 }
3540
3541 /* More interesting part now : we know that we have a complete
3542 * response which at least looks like HTTP. We have an indicator
3543 * of each header's length, so we can parse them quickly.
3544 */
3545
3546 if (unlikely(msg->err_pos >= 0))
3547 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
3548
3549 /* ensure we keep this pointer to the beginning of the message */
3550 msg->sol = rep->data + msg->som;
3551
3552 /*
3553 * 1: get the status code
3554 */
3555 n = rep->data[msg->sl.st.c] - '0';
3556 if (n < 1 || n > 5)
3557 n = 0;
3558 s->srv->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3559
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3560 /* check if the response is HTTP/1.1 or above */
3561 if ((msg->sl.st.v_l == 8) &&
3562 ((rep->data[msg->som + 5] > '1') ||
3563 ((rep->data[msg->som + 5] == '1') &&
3564 (rep->data[msg->som + 7] >= '1'))))
3565 txn->flags |= TX_RES_VER_11;
3566
3567 /* "connection" has not been parsed yet */
3568 txn->flags &= ~TX_CON_HDR_PARS;
3569
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3570 /* transfer length unknown*/
3571 txn->flags &= ~TX_RES_XFER_LEN;
3572
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3573 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
3574
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]3575 if (txn->status >= 100 && txn->status < 500)
3576 health_adjust(s->srv, HANA_STATUS_HTTP_OK);
3577 else
3578 health_adjust(s->srv, HANA_STATUS_HTTP_STS);
3579
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3580 /*
3581 * 2: check for cacheability.
3582 */
3583
3584 switch (txn->status) {
3585 case 200:
3586 case 203:
3587 case 206:
3588 case 300:
3589 case 301:
3590 case 410:
3591 /* RFC2616 @13.4:
3592 * "A response received with a status code of
3593 * 200, 203, 206, 300, 301 or 410 MAY be stored
3594 * by a cache (...) unless a cache-control
3595 * directive prohibits caching."
3596 *
3597 * RFC2616 @9.5: POST method :
3598 * "Responses to this method are not cacheable,
3599 * unless the response includes appropriate
3600 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3601 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3602 if (likely(txn->meth != HTTP_METH_POST) &&
3603 (s->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
3604 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
3605 break;
3606 default:
3607 break;
3608 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3609
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3610 /*
3611 * 3: we may need to capture headers
3612 */
3613 s->logs.logwait &= ~LW_RESP;
3614 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->fe->rsp_cap))
3615 capture_headers(rep->data + msg->som, &txn->hdr_idx,
3616 txn->rsp.cap, s->fe->rsp_cap);
3617
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3618 /* 4: determine the transfer-length.
3619 * According to RFC2616 #4.4, amended by the HTTPbis working group,
3620 * the presence of a message-body in a RESPONSE and its transfer length
3621 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]3622 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3623 * All responses to the HEAD request method MUST NOT include a
3624 * message-body, even though the presence of entity-header fields
3625 * might lead one to believe they do. All 1xx (informational), 204
3626 * (No Content), and 304 (Not Modified) responses MUST NOT include a
3627 * message-body. All other responses do include a message-body,
3628 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]3629 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3630 * 1. Any response which "MUST NOT" include a message-body (such as the
3631 * 1xx, 204 and 304 responses and any response to a HEAD request) is
3632 * always terminated by the first empty line after the header fields,
3633 * regardless of the entity-header fields present in the message.
3634 *
3635 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
3636 * the "chunked" transfer-coding (Section 6.2) is used, the
3637 * transfer-length is defined by the use of this transfer-coding.
3638 * If a Transfer-Encoding header field is present and the "chunked"
3639 * transfer-coding is not present, the transfer-length is defined by
3640 * the sender closing the connection.
3641 *
3642 * 3. If a Content-Length header field is present, its decimal value in
3643 * OCTETs represents both the entity-length and the transfer-length.
3644 * If a message is received with both a Transfer-Encoding header
3645 * field and a Content-Length header field, the latter MUST be ignored.
3646 *
3647 * 4. If the message uses the media type "multipart/byteranges", and
3648 * the transfer-length is not otherwise specified, then this self-
3649 * delimiting media type defines the transfer-length. This media
3650 * type MUST NOT be used unless the sender knows that the recipient
3651 * can parse it; the presence in a request of a Range header with
3652 * multiple byte-range specifiers from a 1.1 client implies that the
3653 * client can parse multipart/byteranges responses.
3654 *
3655 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]3656 */
3657
3658 /* Skip parsing if no content length is possible. The response flags
3659 * remain 0 as well as the hdr_content_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3660 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]3661 * FIXME: should we parse anyway and return an error on chunked encoding ?
3662 */
3663 if (txn->meth == HTTP_METH_HEAD ||
3664 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3665 txn->status == 204 || txn->status == 304) {
3666 txn->flags |= TX_RES_XFER_LEN;
3667 goto skip_content_length;
3668 }
3669
3670 if (txn->meth == HTTP_METH_CONNECT)
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]3671 goto skip_content_length;
3672
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3673 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]3674 ctx.idx = 0;
Willy Tarreau9e13c3c2009-12-22 09:59:58 +0100[diff] [blame]3675 while ((txn->flags & TX_RES_VER_11) &&
3676 http_find_header2("Transfer-Encoding", 17, msg->sol, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3677 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
3678 txn->flags |= (TX_RES_TE_CHNK | TX_RES_XFER_LEN);
3679 else if (txn->flags & TX_RES_TE_CHNK) {
3680 /* bad transfer-encoding (chunked followed by something else) */
3681 use_close_only = 1;
3682 txn->flags &= ~(TX_RES_TE_CHNK | TX_RES_XFER_LEN);
3683 break;
3684 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]3685 }
3686
3687 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
3688 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3689 while (!(txn->flags & TX_RES_TE_CHNK) && !use_close_only &&
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]3690 http_find_header2("Content-Length", 14, msg->sol, &txn->hdr_idx, &ctx)) {
3691 signed long long cl;
3692
3693 if (!ctx.vlen)
3694 goto hdr_response_bad;
3695
3696 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl))
3697 goto hdr_response_bad; /* parse failure */
3698
3699 if (cl < 0)
3700 goto hdr_response_bad;
3701
3702 if ((txn->flags & TX_RES_CNT_LEN) && (msg->hdr_content_len != cl))
3703 goto hdr_response_bad; /* already specified, was different */
3704
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3705 txn->flags |= TX_RES_CNT_LEN | TX_RES_XFER_LEN;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]3706 msg->hdr_content_len = cl;
3707 }
3708
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3709 /* FIXME: we should also implement the multipart/byterange method.
3710 * For now on, we resort to close mode in this case (unknown length).
3711 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]3712skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]3713
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3714 /* end of job, return OK */
3715 rep->analysers &= ~an_bit;
3716 rep->analyse_exp = TICK_ETERNITY;
3717 return 1;
3718}
3719
3720/* This function performs all the processing enabled for the current response.
3721 * It normally returns zero, but may return 1 if it absolutely needs to be
3722 * called again after other functions. It relies on buffers flags, and updates
3723 * t->rep->analysers. It might make sense to explode it into several other
3724 * functions. It works like process_request (see indications above).
3725 */
3726int http_process_res_common(struct session *t, struct buffer *rep, int an_bit, struct proxy *px)
3727{
3728 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3729 struct http_msg *msg = &txn->rsp;
3730 struct proxy *cur_proxy;
3731 int cur_idx;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3732 int conn_ka = 0, conn_cl = 0;
3733 int must_close = 0;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3734
3735 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
3736 now_ms, __FUNCTION__,
3737 t,
3738 rep,
3739 rep->rex, rep->wex,
3740 rep->flags,
3741 rep->l,
3742 rep->analysers);
3743
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3744 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3745 return 0;
3746
3747 rep->analysers &= ~an_bit;
3748 rep->analyse_exp = TICK_ETERNITY;
3749
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3750 /* Now we have to check if we need to modify the Connection header.
3751 * This is more difficult on the response than it is on the request,
3752 * because we can have two different HTTP versions and we don't know
3753 * how the client will interprete a response. For instance, let's say
3754 * that the client sends a keep-alive request in HTTP/1.0 and gets an
3755 * HTTP/1.1 response without any header. Maybe it will bound itself to
3756 * HTTP/1.0 because it only knows about it, and will consider the lack
3757 * of header as a close, or maybe it knows HTTP/1.1 and can consider
3758 * the lack of header as a keep-alive. Thus we will use two flags
3759 * indicating how a request MAY be understood by the client. In case
3760 * of multiple possibilities, we'll fix the header to be explicit. If
3761 * ambiguous cases such as both close and keepalive are seen, then we
3762 * will fall back to explicit close. Note that we won't take risks with
3763 * HTTP/1.0 clients which may not necessarily understand keep-alive.
3764 */
3765
3766 if ((txn->meth != HTTP_METH_CONNECT) &&
3767 (txn->status >= 200) &&
3768 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN &&
3769 !(txn->flags & TX_CON_HDR_PARS)) {
3770 int may_keep = 0, may_close = 0; /* how it may be understood */
3771 struct hdr_ctx ctx;
3772
3773 ctx.idx = 0;
3774 while (http_find_header2("Connection", 10, msg->sol, &txn->hdr_idx, &ctx)) {
3775 if (ctx.vlen == 5 && strncasecmp(ctx.line + ctx.val, "close", 5) == 0)
3776 conn_cl = 1;
3777 else if (ctx.vlen == 10 && strncasecmp(ctx.line + ctx.val, "keep-alive", 10) == 0)
3778 conn_ka = 1;
3779 }
3780
3781 if (conn_cl) {
3782 /* close header present */
3783 may_close = 1;
3784 if (conn_ka) /* we have both close and keep-alive */
3785 may_keep = 1;
3786 }
3787 else if (conn_ka) {
3788 /* keep-alive alone */
3789 may_keep = 1;
3790 }
3791 else {
3792 /* no close nor keep-alive header */
3793 if (txn->flags & TX_RES_VER_11)
3794 may_keep = 1;
3795 else
3796 may_close = 1;
3797
3798 if (txn->flags & TX_REQ_VER_11)
3799 may_keep = 1;
3800 else
3801 may_close = 1;
3802 }
3803
3804 /* let's update the transaction status to reflect any close.
3805 * Note that ambiguous cases with keep & close will also be
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3806 * handled. We also explicitly state that we will close in
3807 * case of an ambiguous response having no content-length.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3808 */
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3809 if (may_close || !(txn->flags & TX_RES_XFER_LEN))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3810 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3811
3812 /* Now we must adjust the response header :
3813 * - set "close" if may_keep and WANT_CLO
3814 * - remove "close" if WANT_SCL and REQ_1.1 and may_close and (content-length or TE_CHNK)
3815 * - add "keep-alive" if WANT_SCL and REQ_1.0 and may_close and content-length
3816 *
3817 * Until we support the server-close mode, we'll only support the set "close".
3818 */
3819 if (may_keep && (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO)
3820 must_close = 1;
3821
3822 txn->flags |= TX_CON_HDR_PARS;
3823 }
3824
3825 /* We might have to check for "Connection:" if the server
3826 * returns a connection status that is not compatible with
3827 * the client's or with the config.
3828 */
3829 if ((txn->status >= 200) && must_close && (conn_cl|conn_ka)) {
3830 char *cur_ptr, *cur_end, *cur_next;
3831 int cur_idx, old_idx, delta, val;
3832 int must_delete;
3833 struct hdr_idx_elem *cur_hdr;
3834
3835 /* we just have to remove the headers if both sides are 1.0 */
3836 must_delete = !(txn->flags & TX_REQ_VER_11) && !(txn->flags & TX_RES_VER_11);
3837 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3838
3839 for (old_idx = 0; (cur_idx = txn->hdr_idx.v[old_idx].next); old_idx = cur_idx) {
3840 cur_hdr = &txn->hdr_idx.v[cur_idx];
3841 cur_ptr = cur_next;
3842 cur_end = cur_ptr + cur_hdr->len;
3843 cur_next = cur_end + cur_hdr->cr + 1;
3844
3845 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
3846 if (!val)
3847 continue;
3848
3849 /* 3 possibilities :
3850 * - we have already set "Connection: close" or we're in
3851 * HTTP/1.0, so we remove this line.
3852 * - we have not yet set "Connection: close", but this line
3853 * indicates close. We leave it untouched and set the flag.
3854 * - we have not yet set "Connection: close", and this line
3855 * indicates non-close. We replace it and set the flag.
3856 */
3857 if (must_delete) {
3858 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
3859 http_msg_move_end(&txn->rsp, delta);
3860 cur_next += delta;
3861 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3862 txn->hdr_idx.used--;
3863 cur_hdr->len = 0;
3864 must_close = 0;
3865 } else {
3866 if (cur_end - cur_ptr - val != 5 ||
3867 strncasecmp(cur_ptr + val, "close", 5) != 0) {
3868 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
3869 "close", 5);
3870 cur_next += delta;
3871 cur_hdr->len += delta;
3872 http_msg_move_end(&txn->rsp, delta);
3873 }
3874 must_delete = 1;
3875 must_close = 0;
3876 }
3877 } /* for loop */
3878 } /* if must close keep-alive */
3879
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3880 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3881 /*
3882 * 3: we will have to evaluate the filters.
3883 * As opposed to version 1.2, now they will be evaluated in the
3884 * filters order and not in the header order. This means that
3885 * each filter has to be validated among all headers.
3886 *
3887 * Filters are tried with ->be first, then with ->fe if it is
3888 * different from ->be.
3889 */
3890
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3891 cur_proxy = t->be;
3892 while (1) {
3893 struct proxy *rule_set = cur_proxy;
3894
3895 /* try headers filters */
3896 if (rule_set->rsp_exp != NULL) {
3897 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
3898 return_bad_resp:
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]3899 if (t->srv) {
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3900 t->srv->counters.failed_resp++;
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]3901 health_adjust(t->srv, HANA_STATUS_HTTP_RSP);
3902 }
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3903 cur_proxy->counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3904 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]3905 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3906 txn->status = 502;
Willy Tarreau8e89b842009-10-18 23:56:35 +0200[diff] [blame]3907 stream_int_retnclose(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3908 if (!(t->flags & SN_ERR_MASK))
3909 t->flags |= SN_ERR_PRXCOND;
3910 if (!(t->flags & SN_FINST_MASK))
3911 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3912 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3913 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3914 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3915
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3916 /* has the response been denied ? */
3917 if (txn->flags & TX_SVDENY) {
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3918 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3919 t->srv->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3920
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3921 cur_proxy->counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3922 if (t->listener->counters)
3923 t->listener->counters->denied_resp++;
3924
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3925 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]3926 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3927
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3928 /* add response headers from the rule sets in the same order */
3929 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3930 if (txn->status < 200)
3931 break;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3932 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
3933 rule_set->rsp_add[cur_idx])) < 0)
3934 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]3935 }
3936
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3937 /* check whether we're already working on the frontend */
3938 if (cur_proxy == t->fe)
3939 break;
3940 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3941 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3942
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3943 /*
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]3944 * We may be facing a 1xx response (100 continue, 101 switching protocols),
3945 * in which case this is not the right response, and we're waiting for the
3946 * next one. Let's allow this response to go to the client and wait for the
3947 * next one.
3948 */
3949 if (txn->status < 200) {
3950 hdr_idx_init(&txn->hdr_idx);
3951 buffer_forward(rep, rep->lr - (rep->data + msg->som));
3952 msg->msg_state = HTTP_MSG_RPBEFORE;
3953 txn->status = 0;
3954 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
3955 return 1;
3956 }
3957
3958 /* we don't have any 1xx status code now */
3959
3960 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3961 * 4: check for server cookie.
3962 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]3963 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
3964 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3965 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3966
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3967
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3968 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3969 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3970 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]3971 if ((t->be->options & (PR_O_COOK_NOC | PR_O_CHK_CACHE)) != 0)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3972 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3973
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3974 /*
3975 * 6: add server cookie in the response if needed
3976 */
3977 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]3978 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3979 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3980
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3981 /* the server is known, it's not the one the client requested, we have to
3982 * insert a set-cookie here, except if we want to insert only on POST
3983 * requests and this one isn't. Note that servers which don't have cookies
3984 * (eg: some backup servers) will return a full cookie removal request.
3985 */
3986 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
3987 t->be->cookie_name,
3988 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]3989
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3990 if (t->be->cookie_domain)
3991 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3992
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3993 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3994 trash, len)) < 0)
3995 goto return_bad_resp;
3996 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3997
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3998 /* Here, we will tell an eventual cache on the client side that we don't
3999 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
4000 * Some caches understand the correct form: 'no-cache="set-cookie"', but
4001 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
4002 */
4003 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4004
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4005 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4006
4007 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
4008 "Cache-control: private", 22)) < 0)
4009 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4010 }
4011 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4012
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4013 /*
4014 * 7: check if result will be cacheable with a cookie.
4015 * We'll block the response if security checks have caught
4016 * nasty things such as a cacheable cookie.
4017 */
4018 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
4019 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]4020 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4021
4022 /* we're in presence of a cacheable response containing
4023 * a set-cookie header. We'll block it as requested by
4024 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4025 */
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]4026 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]4027 t->srv->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4028
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]4029 cur_proxy->counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4030 if (t->listener->counters)
4031 t->listener->counters->denied_resp++;
4032
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4033 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
4034 t->be->id, t->srv?t->srv->id:"<dispatch>");
4035 send_log(t->be, LOG_ALERT,
4036 "Blocking cacheable cookie in response from instance %s, server %s.\n",
4037 t->be->id, t->srv?t->srv->id:"<dispatch>");
4038 goto return_srv_prx_502;
4039 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4040
4041 /*
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4042 * 8: add "Connection: close" if needed and not yet set. This is
4043 * only needed for 1.1 responses since we know there is no other
4044 * Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4045 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]4046 if (must_close && (txn->flags & TX_RES_VER_11)) {
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4047 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4048 "Connection: close", 17)) < 0)
4049 goto return_bad_resp;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4050 must_close = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4051 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4052
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]4053 if (txn->flags & TX_RES_XFER_LEN)
4054 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4055
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4056 /*************************************************************
4057 * OK, that's finished for the headers. We have done what we *
4058 * could. Let's switch to the DATA state. *
4059 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4060
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4061 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4062
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4063 /* if the user wants to log as soon as possible, without counting
4064 * bytes from the server, then this is the right moment. We have
4065 * to temporarily assign bytes_out to log what we currently have.
4066 */
4067 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
4068 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
4069 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]4070 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4071 t->logs.bytes_out = 0;
4072 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4073
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4074 /* Note: we must not try to cheat by jumping directly to DATA,
4075 * otherwise we would not let the client side wake up.
4076 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4077
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4078 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4079 }
4080 return 0;
4081}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4082
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame^]4083/* This function is an analyser which forwards response body (including chunk
4084 * sizes if any). It is called as soon as we must forward, even if we forward
4085 * zero byte. The only situation where it must not be called is when we're in
4086 * tunnel mode and we want to forward till the close. It's used both to forward
4087 * remaining data and to resync after end of body. It expects the msg_state to
4088 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4089 * read more data, or 1 once we can go on with next request or end the session.
4090 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward hdr_content_len
4091 * bytes of pending data + the headers if not already done (between som and sov).
4092 * It eventually adjusts som to match sov after the data in between have been sent.
4093 */
4094int http_response_forward_body(struct session *s, struct buffer *res, int an_bit)
4095{
4096 struct http_txn *txn = &s->txn;
4097 struct http_msg *msg = &s->txn.rsp;
4098
4099 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4100 return 0;
4101
4102 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4103 /* we have msg->col and msg->sov which both point to the first
4104 * byte of message body. msg->som still points to the beginning
4105 * of the message. We must save the body in req->lr because it
4106 * survives buffer re-alignments.
4107 */
4108 res->lr = res->data + msg->sov;
4109 if (txn->flags & TX_RES_TE_CHNK)
4110 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4111 else {
4112 msg->msg_state = HTTP_MSG_DATA;
4113 }
4114 }
4115
4116 /* we may already have some data pending */
4117 if (msg->hdr_content_len || msg->som != msg->sov) {
4118 buffer_forward(res, msg->sov - msg->som + msg->hdr_content_len);
4119 msg->hdr_content_len = 0; /* don't forward that again */
4120 msg->som = msg->sov;
4121 }
4122
4123 while (1) {
4124 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
4125 /* read the chunk size and assign it to ->hdr_content_len, then
4126 * set ->sov to point to the body and switch to DATA or TRAILERS state.
4127 */
4128 int ret = http_parse_chunk_size(res, msg);
4129
4130 if (!ret)
4131 goto missing_data;
4132 else if (ret < 0)
4133 goto return_bad_res;
4134 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
4135
4136 /* forward the chunk size as well as any pending data */
4137 if (msg->hdr_content_len || msg->som != msg->sov) {
4138 buffer_forward(res, msg->sov - msg->som + msg->hdr_content_len);
4139 msg->hdr_content_len = 0; /* don't forward that again */
4140 msg->som = msg->sov;
4141 }
4142 }
4143 else if (msg->msg_state == HTTP_MSG_DATA) {
4144 /* must still forward */
4145 if (res->to_forward)
4146 return 0;
4147
4148 /* nothing left to forward */
4149 if (txn->flags & TX_RES_TE_CHNK)
4150 msg->msg_state = HTTP_MSG_DATA_CRLF;
4151 else {
4152 msg->msg_state = HTTP_MSG_DONE;
4153 }
4154 }
4155 else if (msg->msg_state == HTTP_MSG_DATA_CRLF) {
4156 /* we want the CRLF after the data */
4157 int ret;
4158
4159 if (!(res->flags & BF_OUT_EMPTY))
4160 return 0;
4161 /* The output pointer does not move anymore, next unsent data
4162 * are available at ->w. Let's save that.
4163 */
4164 res->lr = res->w;
4165 ret = http_skip_chunk_crlf(res, msg);
4166
4167 if (!ret)
4168 goto missing_data;
4169 else if (ret < 0)
4170 goto return_bad_res;
4171 /* we're in MSG_CHUNK_SIZE now */
4172 }
4173 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
4174 int ret = http_forward_trailers(res, msg);
4175 if (ret == 0)
4176 goto missing_data;
4177 else if (ret < 0)
4178 goto return_bad_res;
4179 /* we're in HTTP_MSG_DONE now */
4180 }
4181 else if (msg->msg_state == HTTP_MSG_DONE) {
4182 if (!(s->req->flags & BF_OUT_EMPTY) || !(s->rep->flags & BF_OUT_EMPTY) ||
4183 s->req->to_forward || s->rep->to_forward)
4184 return 0;
4185
4186 if (txn->req.msg_state != HTTP_MSG_DONE && txn->req.msg_state != HTTP_MSG_ERROR)
4187 return 0;
4188
4189 /* when we support keep-alive or server-close modes, we'll have
4190 * to reset the transaction here.
4191 */
4192 s->req->flags &= ~BF_DONT_READ; /* re-enable reading on client side */
4193 break;
4194 }
4195 }
4196
4197 res->analysers &= ~an_bit;
4198 return 1;
4199
4200 missing_data:
4201 /* forward the chunk size as well as any pending data */
4202 if (msg->hdr_content_len || msg->som != msg->sov) {
4203 buffer_forward(res, msg->sov - msg->som + msg->hdr_content_len);
4204 msg->hdr_content_len = 0; /* don't forward that again */
4205 msg->som = msg->sov;
4206 }
4207
4208 if (res->flags & BF_FULL)
4209 goto return_bad_res;
4210 /* the session handler will take care of timeouts and errors */
4211 return 0;
4212
4213 return_bad_res: /* let's centralize all bad resuests */
4214 txn->rsp.msg_state = HTTP_MSG_ERROR;
4215 txn->status = 502;
4216 stream_int_cond_close(res->cons, NULL);
4217
4218 res->analysers = 0;
4219 s->be->counters.failed_resp++;
4220 if (s->srv) {
4221 s->srv->counters.failed_resp++;
4222 health_adjust(s->srv, HANA_STATUS_HTTP_HDRRSP);
4223 }
4224
4225 if (!(s->flags & SN_ERR_MASK))
4226 s->flags |= SN_ERR_PRXCOND;
4227 if (!(s->flags & SN_FINST_MASK))
4228 s->flags |= SN_FINST_R;
4229 return 0;
4230}
4231
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4232/* Iterate the same filter through all request headers.
4233 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4234 * Since it can manage the switch to another backend, it updates the per-proxy
4235 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4236 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4237int 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]4238{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4239 char term;
4240 char *cur_ptr, *cur_end, *cur_next;
4241 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4242 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4243 struct hdr_idx_elem *cur_hdr;
4244 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]4245
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4246 last_hdr = 0;
4247
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4248 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4249 old_idx = 0;
4250
4251 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4252 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4253 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4254 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4255 (exp->action == ACT_ALLOW ||
4256 exp->action == ACT_DENY ||
4257 exp->action == ACT_TARPIT))
4258 return 0;
4259
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4260 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4261 if (!cur_idx)
4262 break;
4263
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4264 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4265 cur_ptr = cur_next;
4266 cur_end = cur_ptr + cur_hdr->len;
4267 cur_next = cur_end + cur_hdr->cr + 1;
4268
4269 /* Now we have one header between cur_ptr and cur_end,
4270 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4271 */
4272
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4273 /* The annoying part is that pattern matching needs
4274 * that we modify the contents to null-terminate all
4275 * strings before testing them.
4276 */
4277
4278 term = *cur_end;
4279 *cur_end = '\0';
4280
4281 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4282 switch (exp->action) {
4283 case ACT_SETBE:
4284 /* It is not possible to jump a second time.
4285 * FIXME: should we return an HTTP/500 here so that
4286 * the admin knows there's a problem ?
4287 */
4288 if (t->be != t->fe)
4289 break;
4290
4291 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4292 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4293 last_hdr = 1;
4294 break;
4295
4296 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4297 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4298 last_hdr = 1;
4299 break;
4300
4301 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4302 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4303 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4304
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]4305 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4306 if (t->listener->counters)
4307 t->listener->counters->denied_resp++;
4308
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4309 break;
4310
4311 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4312 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4313 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4314
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]4315 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4316 if (t->listener->counters)
4317 t->listener->counters->denied_resp++;
4318
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4319 break;
4320
4321 case ACT_REPLACE:
4322 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4323 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
4324 /* FIXME: if the user adds a newline in the replacement, the
4325 * index will not be recalculated for now, and the new line
4326 * will not be counted as a new header.
4327 */
4328
4329 cur_end += delta;
4330 cur_next += delta;
4331 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4332 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4333 break;
4334
4335 case ACT_REMOVE:
4336 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
4337 cur_next += delta;
4338
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4339 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4340 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4341 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4342 cur_hdr->len = 0;
4343 cur_end = NULL; /* null-term has been rewritten */
4344 break;
4345
4346 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4347 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4348 if (cur_end)
4349 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4350
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4351 /* keep the link from this header to next one in case of later
4352 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4353 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4354 old_idx = cur_idx;
4355 }
4356 return 0;
4357}
4358
4359
4360/* Apply the filter to the request line.
4361 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4362 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4363 * Since it can manage the switch to another backend, it updates the per-proxy
4364 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4365 */
4366int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
4367{
4368 char term;
4369 char *cur_ptr, *cur_end;
4370 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4371 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4372 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4373
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4374
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4375 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4376 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4377 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4378 (exp->action == ACT_ALLOW ||
4379 exp->action == ACT_DENY ||
4380 exp->action == ACT_TARPIT))
4381 return 0;
4382 else if (exp->action == ACT_REMOVE)
4383 return 0;
4384
4385 done = 0;
4386
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4387 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4388 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4389
4390 /* Now we have the request line between cur_ptr and cur_end */
4391
4392 /* The annoying part is that pattern matching needs
4393 * that we modify the contents to null-terminate all
4394 * strings before testing them.
4395 */
4396
4397 term = *cur_end;
4398 *cur_end = '\0';
4399
4400 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4401 switch (exp->action) {
4402 case ACT_SETBE:
4403 /* It is not possible to jump a second time.
4404 * FIXME: should we return an HTTP/500 here so that
4405 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4406 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4407 if (t->be != t->fe)
4408 break;
4409
4410 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4411 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4412 done = 1;
4413 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4414
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4415 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4416 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4417 done = 1;
4418 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4419
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4420 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4421 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4422
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]4423 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4424 if (t->listener->counters)
4425 t->listener->counters->denied_resp++;
4426
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4427 done = 1;
4428 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4429
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4430 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4431 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4432
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]4433 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4434 if (t->listener->counters)
4435 t->listener->counters->denied_resp++;
4436
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4437 done = 1;
4438 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4439
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4440 case ACT_REPLACE:
4441 *cur_end = term; /* restore the string terminator */
4442 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4443 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
4444 /* FIXME: if the user adds a newline in the replacement, the
4445 * index will not be recalculated for now, and the new line
4446 * will not be counted as a new header.
4447 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4448
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4449 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4450 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4451
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4452 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4453 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4454 HTTP_MSG_RQMETH,
4455 cur_ptr, cur_end + 1,
4456 NULL, NULL);
4457 if (unlikely(!cur_end))
4458 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4459
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4460 /* we have a full request and we know that we have either a CR
4461 * or an LF at <ptr>.
4462 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4463 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
4464 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]4465 /* there is no point trying this regex on headers */
4466 return 1;
4467 }
4468 }
4469 *cur_end = term; /* restore the string terminator */
4470 return done;
4471}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]4472
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4473
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4474
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4475/*
4476 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
4477 * 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]4478 * unparsable request. Since it can manage the switch to another backend, it
4479 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4480 */
4481int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
4482{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4483 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4484 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4485 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4486 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4487
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4488 /*
4489 * The interleaving of transformations and verdicts
4490 * makes it difficult to decide to continue or stop
4491 * the evaluation.
4492 */
4493
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4494 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4495 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4496 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
4497 exp = exp->next;
4498 continue;
4499 }
4500
4501 /* Apply the filter to the request line. */
4502 ret = apply_filter_to_req_line(t, req, exp);
4503 if (unlikely(ret < 0))
4504 return -1;
4505
4506 if (likely(ret == 0)) {
4507 /* The filter did not match the request, it can be
4508 * iterated through all headers.
4509 */
4510 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4511 }
4512 exp = exp->next;
4513 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4514 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4515}
4516
4517
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4518
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4519/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]4520 * Try to retrieve the server associated to the appsession.
4521 * If the server is found, it's assigned to the session.
4522 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4523void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]4524 struct http_txn *txn = &t->txn;
4525 appsess *asession = NULL;
4526 char *sessid_temp = NULL;
4527
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4528 if (len > t->be->appsession_len) {
4529 len = t->be->appsession_len;
4530 }
4531
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]4532 if (t->be->options2 & PR_O2_AS_REQL) {
4533 /* request-learn option is enabled : store the sessid in the session for future use */
4534 if (t->sessid != NULL) {
4535 /* free previously allocated memory as we don't need the session id found in the URL anymore */
4536 pool_free2(apools.sessid, t->sessid);
4537 }
4538
4539 if ((t->sessid = pool_alloc2(apools.sessid)) == NULL) {
4540 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
4541 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
4542 return;
4543 }
4544
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4545 memcpy(t->sessid, buf, len);
4546 t->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]4547 }
4548
4549 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
4550 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
4551 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
4552 return;
4553 }
4554
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4555 memcpy(sessid_temp, buf, len);
4556 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]4557
4558 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
4559 /* free previously allocated memory */
4560 pool_free2(apools.sessid, sessid_temp);
4561
4562 if (asession != NULL) {
4563 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
4564 if (!(t->be->options2 & PR_O2_AS_REQL))
4565 asession->request_count++;
4566
4567 if (asession->serverid != NULL) {
4568 struct server *srv = t->be->srv;
4569 while (srv) {
4570 if (strcmp(srv->id, asession->serverid) == 0) {
4571 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
4572 /* we found the server and it's usable */
4573 txn->flags &= ~TX_CK_MASK;
4574 txn->flags |= TX_CK_VALID;
4575 t->flags |= SN_DIRECT | SN_ASSIGNED;
4576 t->srv = srv;
4577 break;
4578 } else {
4579 txn->flags &= ~TX_CK_MASK;
4580 txn->flags |= TX_CK_DOWN;
4581 }
4582 }
4583 srv = srv->next;
4584 }
4585 }
4586 }
4587}
4588
4589/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]4590 * Manage client-side cookie. It can impact performance by about 2% so it is
4591 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4592 */
4593void manage_client_side_cookies(struct session *t, struct buffer *req)
4594{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4595 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4596 char *p1, *p2, *p3, *p4;
4597 char *del_colon, *del_cookie, *colon;
4598 int app_cookies;
4599
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4600 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4601 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4602
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4603 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4604 * we start with the start line.
4605 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]4606 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4607 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4608
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4609 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4610 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4611 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4612
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4613 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4614 cur_ptr = cur_next;
4615 cur_end = cur_ptr + cur_hdr->len;
4616 cur_next = cur_end + cur_hdr->cr + 1;
4617
4618 /* We have one full header between cur_ptr and cur_end, and the
4619 * next header starts at cur_next. We're only interested in
4620 * "Cookie:" headers.
4621 */
4622
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4623 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
4624 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4625 old_idx = cur_idx;
4626 continue;
4627 }
4628
4629 /* Now look for cookies. Conforming to RFC2109, we have to support
4630 * attributes whose name begin with a '$', and associate them with
4631 * the right cookie, if we want to delete this cookie.
4632 * So there are 3 cases for each cookie read :
4633 * 1) it's a special attribute, beginning with a '$' : ignore it.
4634 * 2) it's a server id cookie that we *MAY* want to delete : save
4635 * some pointers on it (last semi-colon, beginning of cookie...)
4636 * 3) it's an application cookie : we *MAY* have to delete a previous
4637 * "special" cookie.
4638 * At the end of loop, if a "special" cookie remains, we may have to
4639 * remove it. If no application cookie persists in the header, we
4640 * *MUST* delete it
4641 */
4642
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4643 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4644
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4645 /* del_cookie == NULL => nothing to be deleted */
4646 del_colon = del_cookie = NULL;
4647 app_cookies = 0;
4648
4649 while (p1 < cur_end) {
4650 /* skip spaces and colons, but keep an eye on these ones */
4651 while (p1 < cur_end) {
4652 if (*p1 == ';' || *p1 == ',')
4653 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4654 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4655 break;
4656 p1++;
4657 }
4658
4659 if (p1 == cur_end)
4660 break;
4661
4662 /* p1 is at the beginning of the cookie name */
4663 p2 = p1;
4664 while (p2 < cur_end && *p2 != '=')
4665 p2++;
4666
4667 if (p2 == cur_end)
4668 break;
4669
4670 p3 = p2 + 1; /* skips the '=' sign */
4671 if (p3 == cur_end)
4672 break;
4673
4674 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4675 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4676 p4++;
4677
4678 /* here, we have the cookie name between p1 and p2,
4679 * and its value between p3 and p4.
4680 * we can process it :
4681 *
4682 * Cookie: NAME=VALUE;
4683 * | || || |
4684 * | || || +--> p4
4685 * | || |+-------> p3
4686 * | || +--------> p2
4687 * | |+------------> p1
4688 * | +-------------> colon
4689 * +--------------------> cur_ptr
4690 */
4691
4692 if (*p1 == '$') {
4693 /* skip this one */
4694 }
4695 else {
4696 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4697 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4698 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4699 (p4 - p1 >= t->fe->capture_namelen) &&
4700 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4701 int log_len = p4 - p1;
4702
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4703 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4704 Alert("HTTP logging : out of memory.\n");
4705 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4706 if (log_len > t->fe->capture_len)
4707 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4708 memcpy(txn->cli_cookie, p1, log_len);
4709 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4710 }
4711 }
4712
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4713 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4714 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4715 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4716 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4717 char *delim;
4718
4719 /* if we're in cookie prefix mode, we'll search the delimitor so that we
4720 * have the server ID betweek p3 and delim, and the original cookie between
4721 * delim+1 and p4. Otherwise, delim==p4 :
4722 *
4723 * Cookie: NAME=SRV~VALUE;
4724 * | || || | |
4725 * | || || | +--> p4
4726 * | || || +--------> delim
4727 * | || |+-----------> p3
4728 * | || +------------> p2
4729 * | |+----------------> p1
4730 * | +-----------------> colon
4731 * +------------------------> cur_ptr
4732 */
4733
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4734 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4735 for (delim = p3; delim < p4; delim++)
4736 if (*delim == COOKIE_DELIM)
4737 break;
4738 }
4739 else
4740 delim = p4;
4741
4742
4743 /* Here, we'll look for the first running server which supports the cookie.
4744 * This allows to share a same cookie between several servers, for example
4745 * to dedicate backup servers to specific servers only.
4746 * However, to prevent clients from sticking to cookie-less backup server
4747 * when they have incidentely learned an empty cookie, we simply ignore
4748 * empty cookies and mark them as invalid.
4749 */
4750 if (delim == p3)
4751 srv = NULL;
4752
4753 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]4754 if (srv->cookie && (srv->cklen == delim - p3) &&
4755 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4756 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4757 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4758 txn->flags &= ~TX_CK_MASK;
4759 txn->flags |= TX_CK_VALID;
4760 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4761 t->srv = srv;
4762 break;
4763 } else {
4764 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4765 txn->flags &= ~TX_CK_MASK;
4766 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4767 }
4768 }
4769 srv = srv->next;
4770 }
4771
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4772 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4773 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4774 txn->flags &= ~TX_CK_MASK;
4775 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4776 }
4777
4778 /* depending on the cookie mode, we may have to either :
4779 * - delete the complete cookie if we're in insert+indirect mode, so that
4780 * the server never sees it ;
4781 * - remove the server id from the cookie value, and tag the cookie as an
4782 * application cookie so that it does not get accidentely removed later,
4783 * if we're in cookie prefix mode
4784 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4785 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4786 int delta; /* negative */
4787
4788 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
4789 p4 += delta;
4790 cur_end += delta;
4791 cur_next += delta;
4792 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4793 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4794
4795 del_cookie = del_colon = NULL;
4796 app_cookies++; /* protect the header from deletion */
4797 }
4798 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4799 (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]4800 del_cookie = p1;
4801 del_colon = colon;
4802 }
4803 } else {
4804 /* now we know that we must keep this cookie since it's
4805 * not ours. But if we wanted to delete our cookie
4806 * earlier, we cannot remove the complete header, but we
4807 * can remove the previous block itself.
4808 */
4809 app_cookies++;
4810
4811 if (del_cookie != NULL) {
4812 int delta; /* negative */
4813
4814 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
4815 p4 += delta;
4816 cur_end += delta;
4817 cur_next += delta;
4818 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4819 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4820 del_cookie = del_colon = NULL;
4821 }
4822 }
4823
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4824 if (t->be->appsession_name != NULL) {
4825 int cmp_len, value_len;
4826 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4827
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4828 if (t->be->options2 & PR_O2_AS_PFX) {
4829 cmp_len = MIN(p4 - p1, t->be->appsession_name_len);
4830 value_begin = p1 + t->be->appsession_name_len;
4831 value_len = p4 - p1 - t->be->appsession_name_len;
4832 } else {
4833 cmp_len = p2 - p1;
4834 value_begin = p3;
4835 value_len = p4 - p3;
4836 }
4837
4838 /* let's see if the cookie is our appcookie */
4839 if (memcmp(p1, t->be->appsession_name, cmp_len) == 0) {
4840 /* Cool... it's the right one */
4841 manage_client_side_appsession(t, value_begin, value_len);
4842 }
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4843#if defined(DEBUG_HASH)
4844 Alert("manage_client_side_cookies\n");
4845 appsession_hash_dump(&(t->be->htbl_proxy));
4846#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4847 }/* end if ((t->proxy->appsession_name != NULL) ... */
4848 }
4849
4850 /* we'll have to look for another cookie ... */
4851 p1 = p4;
4852 } /* while (p1 < cur_end) */
4853
4854 /* There's no more cookie on this line.
4855 * We may have marked the last one(s) for deletion.
4856 * We must do this now in two ways :
4857 * - if there is no app cookie, we simply delete the header ;
4858 * - if there are app cookies, we must delete the end of the
4859 * string properly, including the colon/semi-colon before
4860 * the cookie name.
4861 */
4862 if (del_cookie != NULL) {
4863 int delta;
4864 if (app_cookies) {
4865 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
4866 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4867 cur_hdr->len += delta;
4868 } else {
4869 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4870
4871 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4872 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4873 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4874 cur_hdr->len = 0;
4875 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]4876 cur_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4877 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4878 }
4879
4880 /* keep the link from this header to next one */
4881 old_idx = cur_idx;
4882 } /* end of cookie processing on this header */
4883}
4884
4885
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4886/* Iterate the same filter through all response headers contained in <rtr>.
4887 * Returns 1 if this filter can be stopped upon return, otherwise 0.
4888 */
4889int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4890{
4891 char term;
4892 char *cur_ptr, *cur_end, *cur_next;
4893 int cur_idx, old_idx, last_hdr;
4894 struct http_txn *txn = &t->txn;
4895 struct hdr_idx_elem *cur_hdr;
4896 int len, delta;
4897
4898 last_hdr = 0;
4899
4900 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4901 old_idx = 0;
4902
4903 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4904 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4905 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4906 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4907 (exp->action == ACT_ALLOW ||
4908 exp->action == ACT_DENY))
4909 return 0;
4910
4911 cur_idx = txn->hdr_idx.v[old_idx].next;
4912 if (!cur_idx)
4913 break;
4914
4915 cur_hdr = &txn->hdr_idx.v[cur_idx];
4916 cur_ptr = cur_next;
4917 cur_end = cur_ptr + cur_hdr->len;
4918 cur_next = cur_end + cur_hdr->cr + 1;
4919
4920 /* Now we have one header between cur_ptr and cur_end,
4921 * and the next header starts at cur_next.
4922 */
4923
4924 /* The annoying part is that pattern matching needs
4925 * that we modify the contents to null-terminate all
4926 * strings before testing them.
4927 */
4928
4929 term = *cur_end;
4930 *cur_end = '\0';
4931
4932 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4933 switch (exp->action) {
4934 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4935 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4936 last_hdr = 1;
4937 break;
4938
4939 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4940 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4941 last_hdr = 1;
4942 break;
4943
4944 case ACT_REPLACE:
4945 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4946 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4947 /* FIXME: if the user adds a newline in the replacement, the
4948 * index will not be recalculated for now, and the new line
4949 * will not be counted as a new header.
4950 */
4951
4952 cur_end += delta;
4953 cur_next += delta;
4954 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4955 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4956 break;
4957
4958 case ACT_REMOVE:
4959 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4960 cur_next += delta;
4961
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]4962 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4963 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4964 txn->hdr_idx.used--;
4965 cur_hdr->len = 0;
4966 cur_end = NULL; /* null-term has been rewritten */
4967 break;
4968
4969 }
4970 }
4971 if (cur_end)
4972 *cur_end = term; /* restore the string terminator */
4973
4974 /* keep the link from this header to next one in case of later
4975 * removal of next header.
4976 */
4977 old_idx = cur_idx;
4978 }
4979 return 0;
4980}
4981
4982
4983/* Apply the filter to the status line in the response buffer <rtr>.
4984 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4985 * or -1 if a replacement resulted in an invalid status line.
4986 */
4987int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4988{
4989 char term;
4990 char *cur_ptr, *cur_end;
4991 int done;
4992 struct http_txn *txn = &t->txn;
4993 int len, delta;
4994
4995
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4996 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4997 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4998 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4999 (exp->action == ACT_ALLOW ||
5000 exp->action == ACT_DENY))
5001 return 0;
5002 else if (exp->action == ACT_REMOVE)
5003 return 0;
5004
5005 done = 0;
5006
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]5007 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5008 cur_end = cur_ptr + txn->rsp.sl.rq.l;
5009
5010 /* Now we have the status line between cur_ptr and cur_end */
5011
5012 /* The annoying part is that pattern matching needs
5013 * that we modify the contents to null-terminate all
5014 * strings before testing them.
5015 */
5016
5017 term = *cur_end;
5018 *cur_end = '\0';
5019
5020 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5021 switch (exp->action) {
5022 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5023 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5024 done = 1;
5025 break;
5026
5027 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5028 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5029 done = 1;
5030 break;
5031
5032 case ACT_REPLACE:
5033 *cur_end = term; /* restore the string terminator */
5034 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
5035 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
5036 /* FIXME: if the user adds a newline in the replacement, the
5037 * index will not be recalculated for now, and the new line
5038 * will not be counted as a new header.
5039 */
5040
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5041 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5042 cur_end += delta;
5043
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]5044 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5045 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]5046 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5047 cur_ptr, cur_end + 1,
5048 NULL, NULL);
5049 if (unlikely(!cur_end))
5050 return -1;
5051
5052 /* we have a full respnse and we know that we have either a CR
5053 * or an LF at <ptr>.
5054 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]5055 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]5056 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
5057 /* there is no point trying this regex on headers */
5058 return 1;
5059 }
5060 }
5061 *cur_end = term; /* restore the string terminator */
5062 return done;
5063}
5064
5065
5066
5067/*
5068 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
5069 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
5070 * unparsable response.
5071 */
5072int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
5073{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5074 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5075 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5076 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5077 int ret;
5078
5079 /*
5080 * The interleaving of transformations and verdicts
5081 * makes it difficult to decide to continue or stop
5082 * the evaluation.
5083 */
5084
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5085 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5086 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
5087 exp->action == ACT_PASS)) {
5088 exp = exp->next;
5089 continue;
5090 }
5091
5092 /* Apply the filter to the status line. */
5093 ret = apply_filter_to_sts_line(t, rtr, exp);
5094 if (unlikely(ret < 0))
5095 return -1;
5096
5097 if (likely(ret == 0)) {
5098 /* The filter did not match the response, it can be
5099 * iterated through all headers.
5100 */
5101 apply_filter_to_resp_headers(t, rtr, exp);
5102 }
5103 exp = exp->next;
5104 }
5105 return 0;
5106}
5107
5108
5109
5110/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]5111 * Manage server-side cookies. It can impact performance by about 2% so it is
5112 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5113 */
5114void manage_server_side_cookies(struct session *t, struct buffer *rtr)
5115{
5116 struct http_txn *txn = &t->txn;
5117 char *p1, *p2, *p3, *p4;
5118
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5119 char *cur_ptr, *cur_end, *cur_next;
5120 int cur_idx, old_idx, delta;
5121
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5122 /* Iterate through the headers.
5123 * we start with the start line.
5124 */
5125 old_idx = 0;
5126 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
5127
5128 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
5129 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5130 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5131
5132 cur_hdr = &txn->hdr_idx.v[cur_idx];
5133 cur_ptr = cur_next;
5134 cur_end = cur_ptr + cur_hdr->len;
5135 cur_next = cur_end + cur_hdr->cr + 1;
5136
5137 /* We have one full header between cur_ptr and cur_end, and the
5138 * next header starts at cur_next. We're only interested in
5139 * "Cookie:" headers.
5140 */
5141
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5142 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
5143 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5144 old_idx = cur_idx;
5145 continue;
5146 }
5147
5148 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5149 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5150
5151
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]5152 /* maybe we only wanted to see if there was a set-cookie. Note that
5153 * the cookie capture is declared in the fronend.
5154 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5155 if (t->be->cookie_name == NULL &&
5156 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]5157 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5158 return;
5159
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5160 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5161
5162 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5163 if (p1 == cur_end || *p1 == ';') /* end of cookie */
5164 break;
5165
5166 /* p1 is at the beginning of the cookie name */
5167 p2 = p1;
5168
5169 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
5170 p2++;
5171
5172 if (p2 == cur_end || *p2 == ';') /* next cookie */
5173 break;
5174
5175 p3 = p2 + 1; /* skip the '=' sign */
5176 if (p3 == cur_end)
5177 break;
5178
5179 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5180 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5181 p4++;
5182
5183 /* here, we have the cookie name between p1 and p2,
5184 * and its value between p3 and p4.
5185 * we can process it.
5186 */
5187
5188 /* first, let's see if we want to capture it */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]5189 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]5190 txn->srv_cookie == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]5191 (p4 - p1 >= t->fe->capture_namelen) &&
5192 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5193 int log_len = p4 - p1;
5194
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]5195 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5196 Alert("HTTP logging : out of memory.\n");
5197 }
5198
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]5199 if (log_len > t->fe->capture_len)
5200 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]5201 memcpy(txn->srv_cookie, p1, log_len);
5202 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5203 }
5204
5205 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5206 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
5207 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5208 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5209 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5210
5211 /* If the cookie is in insert mode on a known server, we'll delete
5212 * this occurrence because we'll insert another one later.
5213 * We'll delete it too if the "indirect" option is set and we're in
5214 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5215 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
5216 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5217 /* this header must be deleted */
5218 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
5219 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5220 txn->hdr_idx.used--;
5221 cur_hdr->len = 0;
5222 cur_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5223 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5224
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5225 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5226 }
5227 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5228 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5229 /* replace bytes p3->p4 with the cookie name associated
5230 * with this server since we know it.
5231 */
5232 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
5233 cur_hdr->len += delta;
5234 cur_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5235 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5236
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5237 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5238 }
5239 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5240 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5241 /* insert the cookie name associated with this server
5242 * before existing cookie, and insert a delimitor between them..
5243 */
5244 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
5245 cur_hdr->len += delta;
5246 cur_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5247 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5248
5249 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5250 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5251 }
5252 }
5253 /* next, let's see if the cookie is our appcookie */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5254 else if (t->be->appsession_name != NULL) {
5255 int cmp_len, value_len;
5256 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5257
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5258 if (t->be->options2 & PR_O2_AS_PFX) {
5259 cmp_len = MIN(p4 - p1, t->be->appsession_name_len);
5260 value_begin = p1 + t->be->appsession_name_len;
5261 value_len = MIN(t->be->appsession_len, p4 - p1 - t->be->appsession_name_len);
5262 } else {
5263 cmp_len = p2 - p1;
5264 value_begin = p3;
5265 value_len = MIN(t->be->appsession_len, p4 - p3);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5266 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5267
5268 if (memcmp(p1, t->be->appsession_name, cmp_len) == 0) {
5269 /* Cool... it's the right one */
5270 if (t->sessid != NULL) {
5271 /* free previously allocated memory as we don't need it anymore */
5272 pool_free2(apools.sessid, t->sessid);
5273 }
5274 /* Store the sessid in the session for future use */
5275 if ((t->sessid = pool_alloc2(apools.sessid)) == NULL) {
5276 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
5277 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
5278 return;
5279 }
5280 memcpy(t->sessid, value_begin, value_len);
5281 t->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5282 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5283 } /* end if ((t->be->appsession_name != NULL) ... */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5284 break; /* we don't want to loop again since there cannot be another cookie on the same line */
5285 } /* we're now at the end of the cookie value */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5286 /* keep the link from this header to next one */
5287 old_idx = cur_idx;
5288 } /* end of cookie processing on this header */
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5289
5290 if (t->sessid != NULL) {
5291 appsess *asession = NULL;
5292 /* only do insert, if lookup fails */
5293 asession = appsession_hash_lookup(&(t->be->htbl_proxy), t->sessid);
5294 if (asession == NULL) {
5295 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
5296 Alert("Not enough Memory process_srv():asession:calloc().\n");
5297 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
5298 return;
5299 }
5300 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
5301 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
5302 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
5303 return;
5304 }
5305 memcpy(asession->sessid, t->sessid, t->be->appsession_len);
5306 asession->sessid[t->be->appsession_len] = 0;
5307
5308 size_t server_id_len = strlen(t->srv->id) + 1;
5309 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
5310 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
5311 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
5312 return;
5313 }
5314 asession->serverid[0] = '\0';
5315 memcpy(asession->serverid, t->srv->id, server_id_len);
5316
5317 asession->request_count = 0;
5318 appsession_hash_insert(&(t->be->htbl_proxy), asession);
5319 }
5320
5321 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
5322 asession->request_count++;
5323 }
5324
5325#if defined(DEBUG_HASH)
5326 Alert("manage_server_side_cookies\n");
5327 appsession_hash_dump(&(t->be->htbl_proxy));
5328#endif
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5329}
5330
5331
5332
5333/*
5334 * Check if response is cacheable or not. Updates t->flags.
5335 */
5336void check_response_for_cacheability(struct session *t, struct buffer *rtr)
5337{
5338 struct http_txn *txn = &t->txn;
5339 char *p1, *p2;
5340
5341 char *cur_ptr, *cur_end, *cur_next;
5342 int cur_idx;
5343
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]5344 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5345 return;
5346
5347 /* Iterate through the headers.
5348 * we start with the start line.
5349 */
5350 cur_idx = 0;
5351 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
5352
5353 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
5354 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5355 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5356
5357 cur_hdr = &txn->hdr_idx.v[cur_idx];
5358 cur_ptr = cur_next;
5359 cur_end = cur_ptr + cur_hdr->len;
5360 cur_next = cur_end + cur_hdr->cr + 1;
5361
5362 /* We have one full header between cur_ptr and cur_end, and the
5363 * next header starts at cur_next. We're only interested in
5364 * "Cookie:" headers.
5365 */
5366
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5367 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
5368 if (val) {
5369 if ((cur_end - (cur_ptr + val) >= 8) &&
5370 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
5371 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5372 return;
5373 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5374 }
5375
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5376 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
5377 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5378 continue;
5379
5380 /* OK, right now we know we have a cache-control header at cur_ptr */
5381
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5382 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5383
5384 if (p1 >= cur_end) /* no more info */
5385 continue;
5386
5387 /* p1 is at the beginning of the value */
5388 p2 = p1;
5389
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5390 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5391 p2++;
5392
5393 /* we have a complete value between p1 and p2 */
5394 if (p2 < cur_end && *p2 == '=') {
5395 /* we have something of the form no-cache="set-cookie" */
5396 if ((cur_end - p1 >= 21) &&
5397 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
5398 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5399 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5400 continue;
5401 }
5402
5403 /* OK, so we know that either p2 points to the end of string or to a comma */
5404 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
5405 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
5406 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
5407 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5408 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5409 return;
5410 }
5411
5412 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5413 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5414 continue;
5415 }
5416 }
5417}
5418
5419
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5420/*
5421 * Try to retrieve a known appsession in the URI, then the associated server.
5422 * If the server is found, it's assigned to the session.
5423 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5424void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5425{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5426 char *end_params, *first_param, *cur_param, *next_param;
5427 char separator;
5428 int value_len;
5429
5430 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5431
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5432 if (t->be->appsession_name == NULL ||
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5433 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5434 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5435 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5436
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5437 first_param = NULL;
5438 switch (mode) {
5439 case PR_O2_AS_M_PP:
5440 first_param = memchr(begin, ';', len);
5441 break;
5442 case PR_O2_AS_M_QS:
5443 first_param = memchr(begin, '?', len);
5444 break;
5445 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5446
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5447 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5448 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5449 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5450
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5451 switch (mode) {
5452 case PR_O2_AS_M_PP:
5453 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
5454 end_params = (char *) begin + len;
5455 }
5456 separator = ';';
5457 break;
5458 case PR_O2_AS_M_QS:
5459 end_params = (char *) begin + len;
5460 separator = '&';
5461 break;
5462 default:
5463 /* unknown mode, shouldn't happen */
5464 return;
5465 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5466
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5467 cur_param = next_param = end_params;
5468 while (cur_param > first_param) {
5469 cur_param--;
5470 if ((cur_param[0] == separator) || (cur_param == first_param)) {
5471 /* let's see if this is the appsession parameter */
5472 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
5473 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
5474 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
5475 /* Cool... it's the right one */
5476 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
5477 value_len = MIN(t->be->appsession_len, next_param - cur_param);
5478 if (value_len > 0) {
5479 manage_client_side_appsession(t, cur_param, value_len);
5480 }
5481 break;
5482 }
5483 next_param = cur_param;
5484 }
5485 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5486#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]5487 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5488 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5489#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5490}
5491
5492
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5493/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5494 * In a GET or HEAD request, check if the requested URI matches the stats uri
5495 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5496 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5497 * 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]5498 * 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]5499 * the stats I/O handler will be registered to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5500 *
5501 * Returns 1 if the session's state changes, otherwise 0.
5502 */
5503int stats_check_uri_auth(struct session *t, struct proxy *backend)
5504{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5505 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5506 struct uri_auth *uri_auth = backend->uri_auth;
5507 struct user_auth *user;
5508 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5509 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5510
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]5511 memset(&t->data_ctx.stats, 0, sizeof(t->data_ctx.stats));
5512
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5513 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5514 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5515 return 0;
5516
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5517 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5518
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5519 /* the URI is in h */
5520 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5521 return 0;
5522
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]5523 h += uri_auth->uri_len;
5524 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
5525 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]5526 t->data_ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]5527 break;
5528 }
5529 h++;
5530 }
5531
5532 if (uri_auth->refresh) {
5533 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
5534 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
5535 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]5536 t->data_ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]5537 break;
5538 }
5539 h++;
5540 }
5541 }
5542
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]5543 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
5544 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
5545 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]5546 t->data_ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]5547 break;
5548 }
5549 h++;
5550 }
5551
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]5552 t->data_ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
5553
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5554 /* we are in front of a interceptable URI. Let's check
5555 * if there's an authentication and if it's valid.
5556 */
5557 user = uri_auth->users;
5558 if (!user) {
5559 /* no user auth required, it's OK */
5560 authenticated = 1;
5561 } else {
5562 authenticated = 0;
5563
5564 /* a user list is defined, we have to check.
5565 * skip 21 chars for "Authorization: Basic ".
5566 */
5567
5568 /* FIXME: this should move to an earlier place */
5569 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5570 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
5571 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
5572 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5573 if (len > 14 &&
5574 !strncasecmp("Authorization:", h, 14)) {
Krzysztof Piotr Oledzki6f61b212009-10-04 23:34:15 +0200[diff] [blame]5575 chunk_initlen(&txn->auth_hdr, h, 0, len);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5576 break;
5577 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5578 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5579 }
5580
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5581 if (txn->auth_hdr.len < 21 ||
5582 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5583 user = NULL;
5584
5585 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5586 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
5587 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5588 user->user_pwd, user->user_len)) {
5589 authenticated = 1;
5590 break;
5591 }
5592 user = user->next;
5593 }
5594 }
5595
5596 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5597 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5598
5599 /* no need to go further */
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]5600 sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
5601 chunk_initlen(&msg, trash, sizeof(trash), strlen(trash));
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]5602 txn->status = 401;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]5603 stream_int_retnclose(t->req->prod, &msg);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5604 t->req->analysers = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5605 if (!(t->flags & SN_ERR_MASK))
5606 t->flags |= SN_ERR_PRXCOND;
5607 if (!(t->flags & SN_FINST_MASK))
5608 t->flags |= SN_FINST_R;
5609 return 1;
5610 }
5611
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]5612 /* The request is valid, the user is authenticated. Let's start sending
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5613 * data.
5614 */
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]5615 t->logs.tv_request = now;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5616 t->data_source = DATA_SRC_STATS;
5617 t->data_state = DATA_ST_INIT;
Willy Tarreau91e99932008-06-30 07:51:00 +0200[diff] [blame]5618 t->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub0c9bc42009-10-04 15:56:38 +0200[diff] [blame]5619 stream_int_register_handler(t->rep->prod, http_stats_io_handler);
5620 t->rep->prod->private = t;
5621 t->rep->prod->st0 = t->rep->prod->st1 = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5622 return 1;
5623}
5624
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5625/*
5626 * Capture a bad request or response and archive it in the proxy's structure.
5627 */
5628void http_capture_bad_message(struct error_snapshot *es, struct session *s,
5629 struct buffer *buf, struct http_msg *msg,
5630 struct proxy *other_end)
5631{
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]5632 es->len = buf->r - (buf->data + msg->som);
5633 memcpy(es->buf, buf->data + msg->som, MIN(es->len, sizeof(es->buf)));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5634 if (msg->err_pos >= 0)
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]5635 es->pos = msg->err_pos - msg->som;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5636 else
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]5637 es->pos = buf->lr - (buf->data + msg->som);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5638 es->when = date; // user-visible date
5639 es->sid = s->uniq_id;
5640 es->srv = s->srv;
5641 es->oe = other_end;
5642 es->src = s->cli_addr;
5643}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5644
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5645/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5646 * Print a debug line with a header
5647 */
5648void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
5649{
5650 int len, max;
5651 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5652 dir, (unsigned short)t->req->prod->fd, (unsigned short)t->req->cons->fd);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5653 max = end - start;
5654 UBOUND(max, sizeof(trash) - len - 1);
5655 len += strlcpy2(trash + len, start, max + 1);
5656 trash[len++] = '\n';
5657 write(1, trash, len);
5658}
5659
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]5660/*
5661 * Initialize a new HTTP transaction for session <s>. It is assumed that all
5662 * the required fields are properly allocated and that we only need to (re)init
5663 * them. This should be used before processing any new request.
5664 */
5665void http_init_txn(struct session *s)
5666{
5667 struct http_txn *txn = &s->txn;
5668 struct proxy *fe = s->fe;
5669
5670 txn->flags = 0;
5671 txn->status = -1;
5672
5673 txn->req.sol = txn->req.eol = NULL;
5674 txn->req.som = txn->req.eoh = 0; /* relative to the buffer */
5675 txn->rsp.sol = txn->rsp.eol = NULL;
5676 txn->rsp.som = txn->rsp.eoh = 0; /* relative to the buffer */
5677 txn->req.hdr_content_len = 0LL;
5678 txn->rsp.hdr_content_len = 0LL;
5679 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
5680 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
5681 chunk_reset(&txn->auth_hdr);
5682
5683 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
5684 if (fe->options2 & PR_O2_REQBUG_OK)
5685 txn->req.err_pos = -1; /* let buggy requests pass */
5686
5687 if (txn->req.cap)
5688 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
5689
5690 if (txn->rsp.cap)
5691 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
5692
5693 if (txn->hdr_idx.v)
5694 hdr_idx_init(&txn->hdr_idx);
5695}
5696
5697/* to be used at the end of a transaction */
5698void http_end_txn(struct session *s)
5699{
5700 struct http_txn *txn = &s->txn;
5701
5702 /* these ones will have been dynamically allocated */
5703 pool_free2(pool2_requri, txn->uri);
5704 pool_free2(pool2_capture, txn->cli_cookie);
5705 pool_free2(pool2_capture, txn->srv_cookie);
5706 txn->uri = NULL;
5707 txn->srv_cookie = NULL;
5708 txn->cli_cookie = NULL;
5709}
5710
5711/* to be used at the end of a transaction to prepare a new one */
5712void http_reset_txn(struct session *s)
5713{
5714 http_end_txn(s);
5715 http_init_txn(s);
5716
5717 s->be = s->fe;
5718 s->req->analysers = s->listener->analysers;
5719 s->logs.logwait = s->fe->to_log;
5720 s->srv = s->prev_srv = s->srv_conn = NULL;
5721 s->pend_pos = NULL;
5722 s->conn_retries = s->be->conn_retries;
5723
5724 s->req->flags |= BF_READ_DONTWAIT; /* one read is usually enough */
5725
5726 s->req->rto = s->fe->timeout.client;
5727 s->req->wto = s->be->timeout.server;
5728 s->req->cto = s->be->timeout.connect;
5729
5730 s->rep->rto = s->be->timeout.server;
5731 s->rep->wto = s->fe->timeout.client;
5732 s->rep->cto = TICK_ETERNITY;
5733
5734 s->req->rex = TICK_ETERNITY;
5735 s->req->wex = TICK_ETERNITY;
5736 s->req->analyse_exp = TICK_ETERNITY;
5737 s->rep->rex = TICK_ETERNITY;
5738 s->rep->wex = TICK_ETERNITY;
5739 s->rep->analyse_exp = TICK_ETERNITY;
5740}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5741
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5742/************************************************************************/
5743/* The code below is dedicated to ACL parsing and matching */
5744/************************************************************************/
5745
5746
5747
5748
5749/* 1. Check on METHOD
5750 * We use the pre-parsed method if it is known, and store its number as an
5751 * integer. If it is unknown, we use the pointer and the length.
5752 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5753static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5754{
5755 int len, meth;
5756
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5757 len = strlen(*text);
5758 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5759
5760 pattern->val.i = meth;
5761 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5762 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5763 if (!pattern->ptr.str)
5764 return 0;
5765 pattern->len = len;
5766 }
5767 return 1;
5768}
5769
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5770static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5771acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
5772 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5773{
5774 int meth;
5775 struct http_txn *txn = l7;
5776
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5777 if (!txn)
5778 return 0;
5779
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5780 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5781 return 0;
5782
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5783 meth = txn->meth;
5784 test->i = meth;
5785 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5786 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5787 /* ensure the indexes are not affected */
5788 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5789 test->len = txn->req.sl.rq.m_l;
5790 test->ptr = txn->req.sol;
5791 }
5792 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5793 return 1;
5794}
5795
5796static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
5797{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]5798 int icase;
5799
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5800 if (test->i != pattern->val.i)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]5801 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5802
5803 if (test->i != HTTP_METH_OTHER)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]5804 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5805
5806 /* Other method, we must compare the strings */
5807 if (pattern->len != test->len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]5808 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]5809
5810 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
5811 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
5812 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]5813 return ACL_PAT_FAIL;
5814 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5815}
5816
5817/* 2. Check on Request/Status Version
5818 * We simply compare strings here.
5819 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5820static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5821{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5822 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5823 if (!pattern->ptr.str)
5824 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5825 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5826 return 1;
5827}
5828
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5829static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5830acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
5831 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5832{
5833 struct http_txn *txn = l7;
5834 char *ptr;
5835 int len;
5836
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5837 if (!txn)
5838 return 0;
5839
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5840 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5841 return 0;
5842
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5843 len = txn->req.sl.rq.v_l;
5844 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
5845
5846 while ((len-- > 0) && (*ptr++ != '/'));
5847 if (len <= 0)
5848 return 0;
5849
5850 test->ptr = ptr;
5851 test->len = len;
5852
5853 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5854 return 1;
5855}
5856
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5857static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5858acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
5859 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5860{
5861 struct http_txn *txn = l7;
5862 char *ptr;
5863 int len;
5864
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5865 if (!txn)
5866 return 0;
5867
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5868 if (txn->rsp.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5869 return 0;
5870
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5871 len = txn->rsp.sl.st.v_l;
5872 ptr = txn->rsp.sol;
5873
5874 while ((len-- > 0) && (*ptr++ != '/'));
5875 if (len <= 0)
5876 return 0;
5877
5878 test->ptr = ptr;
5879 test->len = len;
5880
5881 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5882 return 1;
5883}
5884
5885/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5886static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5887acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
5888 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5889{
5890 struct http_txn *txn = l7;
5891 char *ptr;
5892 int len;
5893
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5894 if (!txn)
5895 return 0;
5896
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5897 if (txn->rsp.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5898 return 0;
5899
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5900 len = txn->rsp.sl.st.c_l;
5901 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
5902
5903 test->i = __strl2ui(ptr, len);
5904 test->flags = ACL_TEST_F_VOL_1ST;
5905 return 1;
5906}
5907
5908/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5909static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5910acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
5911 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5912{
5913 struct http_txn *txn = l7;
5914
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5915 if (!txn)
5916 return 0;
5917
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5918 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5919 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5920
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5921 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5922 /* ensure the indexes are not affected */
5923 return 0;
5924
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5925 test->len = txn->req.sl.rq.u_l;
5926 test->ptr = txn->req.sol + txn->req.sl.rq.u;
5927
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5928 /* we do not need to set READ_ONLY because the data is in a buffer */
5929 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5930 return 1;
5931}
5932
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5933static int
5934acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5935 struct acl_expr *expr, struct acl_test *test)
5936{
5937 struct http_txn *txn = l7;
5938
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5939 if (!txn)
5940 return 0;
5941
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5942 if (txn->req.msg_state < HTTP_MSG_BODY)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5943 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5944
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5945 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5946 /* ensure the indexes are not affected */
5947 return 0;
5948
5949 /* Parse HTTP request */
5950 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
5951 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
5952 test->i = AF_INET;
5953
5954 /*
5955 * If we are parsing url in frontend space, we prepare backend stage
5956 * to not parse again the same url ! optimization lazyness...
5957 */
5958 if (px->options & PR_O_HTTP_PROXY)
5959 l4->flags |= SN_ADDR_SET;
5960
5961 test->flags = ACL_TEST_F_READ_ONLY;
5962 return 1;
5963}
5964
5965static int
5966acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
5967 struct acl_expr *expr, struct acl_test *test)
5968{
5969 struct http_txn *txn = l7;
5970
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5971 if (!txn)
5972 return 0;
5973
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5974 if (txn->req.msg_state < HTTP_MSG_BODY)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5975 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5976
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5977 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5978 /* ensure the indexes are not affected */
5979 return 0;
5980
5981 /* Same optimization as url_ip */
5982 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
5983 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
5984
5985 if (px->options & PR_O_HTTP_PROXY)
5986 l4->flags |= SN_ADDR_SET;
5987
5988 test->flags = ACL_TEST_F_READ_ONLY;
5989 return 1;
5990}
5991
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5992/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
5993 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
5994 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5995static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5996acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5997 struct acl_expr *expr, struct acl_test *test)
5998{
5999 struct http_txn *txn = l7;
6000 struct hdr_idx *idx = &txn->hdr_idx;
6001 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]6002
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]6003 if (!txn)
6004 return 0;
6005
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]6006 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
6007 /* search for header from the beginning */
6008 ctx->idx = 0;
6009
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]6010 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
6011 test->flags |= ACL_TEST_F_FETCH_MORE;
6012 test->flags |= ACL_TEST_F_VOL_HDR;
6013 test->len = ctx->vlen;
6014 test->ptr = (char *)ctx->line + ctx->val;
6015 return 1;
6016 }
6017
6018 test->flags &= ~ACL_TEST_F_FETCH_MORE;
6019 test->flags |= ACL_TEST_F_VOL_HDR;
6020 return 0;
6021}
6022
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]6023static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6024acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
6025 struct acl_expr *expr, struct acl_test *test)
6026{
6027 struct http_txn *txn = l7;
6028
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]6029 if (!txn)
6030 return 0;
6031
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]6032 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6033 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]6034
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6035 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
6036 /* ensure the indexes are not affected */
6037 return 0;
6038
6039 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
6040}
6041
6042static int
6043acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
6044 struct acl_expr *expr, struct acl_test *test)
6045{
6046 struct http_txn *txn = l7;
6047
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]6048 if (!txn)
6049 return 0;
6050
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]6051 if (txn->rsp.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6052 return 0;
6053
6054 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
6055}
6056
6057/* 6. Check on HTTP header count. The number of occurrences is returned.
6058 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
6059 */
6060static int
6061acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]6062 struct acl_expr *expr, struct acl_test *test)
6063{
6064 struct http_txn *txn = l7;
6065 struct hdr_idx *idx = &txn->hdr_idx;
6066 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]6067 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]6068
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]6069 if (!txn)
6070 return 0;
6071
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]6072 ctx.idx = 0;
6073 cnt = 0;
6074 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
6075 cnt++;
6076
6077 test->i = cnt;
6078 test->flags = ACL_TEST_F_VOL_HDR;
6079 return 1;
6080}
6081
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6082static int
6083acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
6084 struct acl_expr *expr, struct acl_test *test)
6085{
6086 struct http_txn *txn = l7;
6087
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]6088 if (!txn)
6089 return 0;
6090
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]6091 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6092 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]6093
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6094 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
6095 /* ensure the indexes are not affected */
6096 return 0;
6097
6098 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
6099}
6100
6101static int
6102acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
6103 struct acl_expr *expr, struct acl_test *test)
6104{
6105 struct http_txn *txn = l7;
6106
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]6107 if (!txn)
6108 return 0;
6109
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]6110 if (txn->rsp.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6111 return 0;
6112
6113 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
6114}
6115
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]6116/* 7. Check on HTTP header's integer value. The integer value is returned.
6117 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6118 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]6119 */
6120static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6121acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]6122 struct acl_expr *expr, struct acl_test *test)
6123{
6124 struct http_txn *txn = l7;
6125 struct hdr_idx *idx = &txn->hdr_idx;
6126 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]6127
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]6128 if (!txn)
6129 return 0;
6130
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]6131 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
6132 /* search for header from the beginning */
6133 ctx->idx = 0;
6134
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]6135 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
6136 test->flags |= ACL_TEST_F_FETCH_MORE;
6137 test->flags |= ACL_TEST_F_VOL_HDR;
6138 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
6139 return 1;
6140 }
6141
6142 test->flags &= ~ACL_TEST_F_FETCH_MORE;
6143 test->flags |= ACL_TEST_F_VOL_HDR;
6144 return 0;
6145}
6146
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6147static int
6148acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
6149 struct acl_expr *expr, struct acl_test *test)
6150{
6151 struct http_txn *txn = l7;
6152
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]6153 if (!txn)
6154 return 0;
6155
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]6156 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6157 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]6158
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6159 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
6160 /* ensure the indexes are not affected */
6161 return 0;
6162
6163 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
6164}
6165
6166static int
6167acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
6168 struct acl_expr *expr, struct acl_test *test)
6169{
6170 struct http_txn *txn = l7;
6171
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]6172 if (!txn)
6173 return 0;
6174
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]6175 if (txn->rsp.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6176 return 0;
6177
6178 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
6179}
6180
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]6181/* 7. Check on HTTP header's IPv4 address value. The IPv4 address is returned.
6182 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
6183 */
6184static int
6185acl_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, char *sol,
6186 struct acl_expr *expr, struct acl_test *test)
6187{
6188 struct http_txn *txn = l7;
6189 struct hdr_idx *idx = &txn->hdr_idx;
6190 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
6191
6192 if (!txn)
6193 return 0;
6194
6195 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
6196 /* search for header from the beginning */
6197 ctx->idx = 0;
6198
6199 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
6200 test->flags |= ACL_TEST_F_FETCH_MORE;
6201 test->flags |= ACL_TEST_F_VOL_HDR;
6202 /* Same optimization as url_ip */
6203 memset(&l4->srv_addr.sin_addr, 0, sizeof(l4->srv_addr.sin_addr));
6204 url2ip((char *)ctx->line + ctx->val, &l4->srv_addr.sin_addr);
6205 test->ptr = (void *)&l4->srv_addr.sin_addr;
6206 test->i = AF_INET;
6207 return 1;
6208 }
6209
6210 test->flags &= ~ACL_TEST_F_FETCH_MORE;
6211 test->flags |= ACL_TEST_F_VOL_HDR;
6212 return 0;
6213}
6214
6215static int
6216acl_fetch_chdr_ip(struct proxy *px, struct session *l4, void *l7, int dir,
6217 struct acl_expr *expr, struct acl_test *test)
6218{
6219 struct http_txn *txn = l7;
6220
6221 if (!txn)
6222 return 0;
6223
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]6224 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]6225 return 0;
6226
6227 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
6228 /* ensure the indexes are not affected */
6229 return 0;
6230
6231 return acl_fetch_hdr_ip(px, l4, txn, txn->req.sol, expr, test);
6232}
6233
6234static int
6235acl_fetch_shdr_ip(struct proxy *px, struct session *l4, void *l7, int dir,
6236 struct acl_expr *expr, struct acl_test *test)
6237{
6238 struct http_txn *txn = l7;
6239
6240 if (!txn)
6241 return 0;
6242
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]6243 if (txn->rsp.msg_state < HTTP_MSG_BODY)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]6244 return 0;
6245
6246 return acl_fetch_hdr_ip(px, l4, txn, txn->rsp.sol, expr, test);
6247}
6248
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]6249/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
6250 * the first '/' after the possible hostname, and ends before the possible '?'.
6251 */
6252static int
6253acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
6254 struct acl_expr *expr, struct acl_test *test)
6255{
6256 struct http_txn *txn = l7;
6257 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]6258
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]6259 if (!txn)
6260 return 0;
6261
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]6262 if (txn->req.msg_state < HTTP_MSG_BODY)
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6263 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]6264
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]6265 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
6266 /* ensure the indexes are not affected */
6267 return 0;
6268
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6269 end = txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
6270 ptr = http_get_path(txn);
6271 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]6272 return 0;
6273
6274 /* OK, we got the '/' ! */
6275 test->ptr = ptr;
6276
6277 while (ptr < end && *ptr != '?')
6278 ptr++;
6279
6280 test->len = ptr - test->ptr;
6281
6282 /* we do not need to set READ_ONLY because the data is in a buffer */
6283 test->flags = ACL_TEST_F_VOL_1ST;
6284 return 1;
6285}
6286
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]6287static int
6288acl_fetch_proto_http(struct proxy *px, struct session *s, void *l7, int dir,
6289 struct acl_expr *expr, struct acl_test *test)
6290{
6291 struct buffer *req = s->req;
6292 struct http_txn *txn = &s->txn;
6293 struct http_msg *msg = &txn->req;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]6294
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]6295 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
6296 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
6297 */
6298
6299 if (!s || !req)
6300 return 0;
6301
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]6302 if (unlikely(msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]6303 /* Already decoded as OK */
6304 test->flags |= ACL_TEST_F_SET_RES_PASS;
6305 return 1;
6306 }
6307
6308 /* Try to decode HTTP request */
6309 if (likely(req->lr < req->r))
6310 http_msg_analyzer(req, msg, &txn->hdr_idx);
6311
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]6312 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]6313 if ((msg->msg_state == HTTP_MSG_ERROR) || (req->flags & BF_FULL)) {
6314 test->flags |= ACL_TEST_F_SET_RES_FAIL;
6315 return 1;
6316 }
6317 /* wait for final state */
6318 test->flags |= ACL_TEST_F_MAY_CHANGE;
6319 return 0;
6320 }
6321
6322 /* OK we got a valid HTTP request. We have some minor preparation to
6323 * perform so that further checks can rely on HTTP tests.
6324 */
6325 msg->sol = req->data + msg->som;
6326 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
6327 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
6328 s->flags |= SN_REDIRECTABLE;
6329
6330 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(req, msg, txn)) {
6331 test->flags |= ACL_TEST_F_SET_RES_FAIL;
6332 return 1;
6333 }
6334
6335 test->flags |= ACL_TEST_F_SET_RES_PASS;
6336 return 1;
6337}
6338
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]6339
6340/************************************************************************/
6341/* All supported keywords must be declared here. */
6342/************************************************************************/
6343
6344/* Note: must not be declared <const> as its list will be overwritten */
6345static struct acl_kw_list acl_kws = {{ },{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]6346 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT },
6347
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]6348 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT },
6349 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE },
6350 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE },
6351 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]6352
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]6353 { "url", acl_parse_str, acl_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE },
6354 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
6355 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE },
6356 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
6357 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
6358 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
6359 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
6360 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE },
6361 { "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]6362
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]6363 /* note: we should set hdr* to use ACL_USE_HDR_VOLATILE, and chdr* to use L7REQ_VOLATILE */
6364 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str, ACL_USE_L7REQ_VOLATILE },
6365 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
6366 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
6367 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end, ACL_USE_L7REQ_VOLATILE },
6368 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
6369 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
6370 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
6371 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int, ACL_USE_L7REQ_VOLATILE },
6372 { "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]6373 { "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]6374
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]6375 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str, ACL_USE_L7RTR_VOLATILE },
6376 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE },
6377 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE },
6378 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end, ACL_USE_L7RTR_VOLATILE },
6379 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE },
6380 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE },
6381 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE },
6382 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int, ACL_USE_L7RTR_VOLATILE },
6383 { "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]6384 { "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]6385
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]6386 { "path", acl_parse_str, acl_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE },
6387 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
6388 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
6389 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE },
6390 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
6391 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
6392 { "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]6393
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]6394 { NULL, NULL, NULL, NULL },
6395
6396#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]6397 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
6398 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
6399 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
6400 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
6401 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
6402 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
6403 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
6404
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]6405 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
6406 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
6407 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
6408 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
6409 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
6410 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
6411 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
6412 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
6413
6414 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
6415 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
6416 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
6417 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
6418 { NULL, NULL, NULL, NULL },
6419#endif
6420}};
6421
6422
6423__attribute__((constructor))
6424static void __http_protocol_init(void)
6425{
6426 acl_register_keywords(&acl_kws);
6427}
6428
6429
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6430/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6431 * Local variables:
6432 * c-indent-level: 8
6433 * c-basic-offset: 8
6434 * End:
6435 */