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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +01004 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +02005 *
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 +020020#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020021
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +010026#include <common/base64.h>
Frédéric Lécaillea41d5312018-01-29 12:05:07 +010027#include <common/cfgparse.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020028#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020029#include <common/compat.h>
30#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +010031#include <common/debug.h>
Willy Tarreauafba57a2018-12-11 13:44:24 +010032#include <common/h1.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020033#include <common/memory.h>
34#include <common/mini-clist.h>
35#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +020036#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020037#include <common/time.h>
38#include <common/uri_auth.h>
39#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020040
41#include <types/capture.h>
Willy Tarreau12207b32016-11-22 19:48:51 +010042#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020043#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020044#include <types/global.h>
William Lallemand9ed62032016-11-21 17:49:11 +010045#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020046
Willy Tarreau8797c062007-05-07 00:55:35 +020047#include <proto/acl.h>
Thierry FOURNIER322a1242015-08-19 09:07:47 +020048#include <proto/action.h>
Willy Tarreau61612d42012-04-19 18:42:05 +020049#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +010050#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020051#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020052#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +010053#include <proto/checks.h>
Willy Tarreau12207b32016-11-22 19:48:51 +010054#include <proto/cli.h>
William Lallemand82fe75c2012-10-23 10:25:10 +020055#include <proto/compression.h>
Baptiste Assmann333939c2019-01-21 08:34:50 +010056#include <proto/dns.h>
William Lallemand9ed62032016-11-21 17:49:11 +010057#include <proto/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020058#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020059#include <proto/filters.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +020060#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020061#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +010062#include <proto/hdr_idx.h>
Patrick Hemmere3faf022018-08-22 10:02:00 -040063#include <proto/hlua.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +010064#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +020065#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020066#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010067#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020068#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +020069#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010070#include <proto/server.h>
Olivier Houchard985f1392018-11-30 17:31:52 +010071#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +020072#include <proto/stream.h>
Willy Tarreaucff64112008-11-03 06:26:53 +010073#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020074#include <proto/task.h>
Baptiste Assmannfabcbe02014-04-24 22:16:59 +020075#include <proto/pattern.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +020076#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020077
Willy Tarreau2d3d94c2008-11-30 20:20:08 +010078/* This function handles a server error at the stream interface level. The
79 * stream interface is assumed to be already in a closed state. An optional
Willy Tarreau2019f952017-03-14 11:07:31 +010080 * message is copied into the input buffer.
Willy Tarreau2d3d94c2008-11-30 20:20:08 +010081 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +010082 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +020083 */
Willy Tarreau87b09662015-04-03 00:22:06 +020084static void http_server_error(struct stream *s, struct stream_interface *si,
Willy Tarreau83061a82018-07-13 11:56:34 +020085 int err, int finst, const struct buffer *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +020086{
Christopher Faulet9768c262018-10-22 09:34:31 +020087 if (IS_HTX_STRM(s))
88 return htx_server_error(s, si, err, finst, msg);
89
Willy Tarreau2019f952017-03-14 11:07:31 +010090 FLT_STRM_CB(s, flt_http_reply(s, s->txn->status, msg));
Willy Tarreau2bb4a962014-11-28 11:11:05 +010091 channel_auto_read(si_oc(si));
92 channel_abort(si_oc(si));
93 channel_auto_close(si_oc(si));
94 channel_erase(si_oc(si));
95 channel_auto_close(si_ic(si));
96 channel_auto_read(si_ic(si));
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +020097 if (msg)
Willy Tarreau843b7cb2018-07-13 10:54:26 +020098 co_inject(si_ic(si), msg->area, msg->data);
Willy Tarreaue7dff022015-04-03 01:14:29 +020099 if (!(s->flags & SF_ERR_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200100 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200101 if (!(s->flags & SF_FINST_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200102 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200103}
104
Willy Tarreau87b09662015-04-03 00:22:06 +0200105/* This function returns the appropriate error location for the given stream
Willy Tarreau80587432006-12-24 17:47:20 +0100106 * and message.
107 */
108
Willy Tarreau83061a82018-07-13 11:56:34 +0200109struct buffer *http_error_message(struct stream *s)
Willy Tarreau80587432006-12-24 17:47:20 +0100110{
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200111 const int msgnum = http_get_status_idx(s->txn->status);
112
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100113 if (IS_HTX_STRM(s))
114 return htx_error_message(s);
115
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200116 if (s->be->errmsg[msgnum].area)
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200117 return &s->be->errmsg[msgnum];
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200118 else if (strm_fe(s)->errmsg[msgnum].area)
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200119 return &strm_fe(s)->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100120 else
121 return &http_err_chunks[msgnum];
122}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200123
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100124void
Willy Tarreau83061a82018-07-13 11:56:34 +0200125http_reply_and_close(struct stream *s, short status, struct buffer *msg)
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100126{
Christopher Faulet9768c262018-10-22 09:34:31 +0200127 if (IS_HTX_STRM(s))
128 return htx_reply_and_close(s, status, msg);
129
Christopher Fauletd7c91962015-04-30 11:48:27 +0200130 s->txn->flags &= ~TX_WAIT_NEXT_RQ;
Christopher Faulet3e344292015-11-24 16:24:13 +0100131 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Willy Tarreau14bfe9a2018-12-19 15:19:27 +0100132 si_retnclose(&s->si[0], msg);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100133}
134
Willy Tarreau21d2af32008-02-14 20:25:24 +0100135/* Parse the URI from the given transaction (which is assumed to be in request
136 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
137 * It is returned otherwise.
138 */
Willy Tarreau6b952c82018-09-10 17:45:34 +0200139char *http_txn_get_path(const struct http_txn *txn)
Willy Tarreau21d2af32008-02-14 20:25:24 +0100140{
Willy Tarreau6b952c82018-09-10 17:45:34 +0200141 struct ist ret;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100142
Willy Tarreau9d9ccdb2018-10-28 20:13:12 +0100143 if (!txn->req.chn->buf.size)
144 return NULL;
145
Willy Tarreau6b952c82018-09-10 17:45:34 +0200146 ret = http_get_path(ist2(ci_head(txn->req.chn) + txn->req.sl.rq.u, txn->req.sl.rq.u_l));
William Lallemand65ad6e12014-01-31 15:08:02 +0100147
Willy Tarreau6b952c82018-09-10 17:45:34 +0200148 return ret.ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100149}
150
Willy Tarreau71241ab2012-12-27 11:30:54 +0100151/* Returns a 302 for a redirectable request that reaches a server working in
152 * in redirect mode. This may only be called just after the stream interface
153 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
154 * follow normal proxy processing. NOTE: this function is designed to support
155 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100156 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200157void http_perform_server_redirect(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100158{
159 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100160 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100161 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200162 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100163
Christopher Fauletfefc73d2018-10-24 21:18:04 +0200164 if (IS_HTX_STRM(s))
165 return htx_perform_server_redirect(s, si);
166
Willy Tarreauefb453c2008-10-26 20:49:47 +0100167 /* 1: create the response header */
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200168 trash.data = strlen(HTTP_302);
169 memcpy(trash.area, HTTP_302, trash.data);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100170
Willy Tarreaub05e48a2018-09-20 11:12:58 +0200171 srv = __objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100172
Willy Tarreauefb453c2008-10-26 20:49:47 +0100173 /* 2: add the server's prefix */
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200174 if (trash.data + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100175 return;
176
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100177 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100178 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200179 memcpy(trash.area + trash.data, srv->rdr_pfx, srv->rdr_len);
180 trash.data += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100181 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100182
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200183 /* 3: add the request URI. Since it was already forwarded, we need
184 * to temporarily rewind the buffer.
185 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200186 txn = s->txn;
Willy Tarreaubcbd3932018-06-06 07:13:22 +0200187 c_rew(&s->req, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200188
Willy Tarreau6b952c82018-09-10 17:45:34 +0200189 path = http_txn_get_path(txn);
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200190 len = b_dist(&s->req.buf, path, c_ptr(&s->req, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200191
Willy Tarreaubcbd3932018-06-06 07:13:22 +0200192 c_adv(&s->req, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200193
Willy Tarreauefb453c2008-10-26 20:49:47 +0100194 if (!path)
195 return;
196
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200197 if (trash.data + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100198 return;
199
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200200 memcpy(trash.area + trash.data, path, len);
201 trash.data += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100202
203 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200204 memcpy(trash.area + trash.data,
205 "\r\nProxy-Connection: close\r\n\r\n", 29);
206 trash.data += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100207 } else {
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200208 memcpy(trash.area + trash.data,
209 "\r\nConnection: close\r\n\r\n", 23);
210 trash.data += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100211 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100212
213 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200214 si_shutr(si);
215 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100216 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100217 si->state = SI_ST_CLO;
218
219 /* send the message */
Willy Tarreau2019f952017-03-14 11:07:31 +0100220 txn->status = 302;
221 http_server_error(s, si, SF_ERR_LOCAL, SF_FINST_C, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100222
223 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100224 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500225 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100226}
227
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100228/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100229 * that the server side is closed. Note that err_type is actually a
230 * bitmask, where almost only aborts may be cumulated with other
231 * values. We consider that aborted operations are more important
232 * than timeouts or errors due to the fact that nobody else in the
233 * logs might explain incomplete retries. All others should avoid
234 * being cumulated. It should normally not be possible to have multiple
235 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100236 * Note that connection errors appearing on the second request of a keep-alive
237 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100238 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200239void http_return_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100240{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100241 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100242
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200243 /* set s->txn->status for http_error_message(s) */
244 s->txn->status = 503;
245
Willy Tarreauefb453c2008-10-26 20:49:47 +0100246 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200247 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_Q,
Willy Tarreau2019f952017-03-14 11:07:31 +0100248 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100249 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200250 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100251 (s->txn->flags & TX_NOT_FIRST) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200252 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100253 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200254 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_Q,
Willy Tarreau2019f952017-03-14 11:07:31 +0100255 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100256 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200257 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_Q,
Willy Tarreau2019f952017-03-14 11:07:31 +0100258 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100259 else if (err_type & SI_ET_CONN_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200260 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100261 (s->txn->flags & TX_NOT_FIRST) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200262 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100263 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200264 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100265 (s->flags & SF_SRV_REUSED) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200266 http_error_message(s));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200267 else if (err_type & SI_ET_CONN_RES)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200268 http_server_error(s, si, SF_ERR_RESOURCE, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100269 (s->txn->flags & TX_NOT_FIRST) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200270 http_error_message(s));
271 else { /* SI_ET_CONN_OTHER and others */
272 s->txn->status = 500;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200273 http_server_error(s, si, SF_ERR_INTERNAL, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100274 http_error_message(s));
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200275 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100276}
277
Willy Tarreau42250582007-04-01 01:30:43 +0200278extern const char sess_term_cond[8];
279extern const char sess_fin_state[8];
280extern const char *monthname[12];
Willy Tarreau8ceae722018-11-26 11:58:30 +0100281
282DECLARE_POOL(pool_head_http_txn, "http_txn", sizeof(struct http_txn));
283DECLARE_POOL(pool_head_uniqueid, "uniqueid", UNIQUEID_LEN);
284
285struct pool_head *pool_head_requri = NULL;
Willy Tarreaubafbe012017-11-24 17:34:44 +0100286struct pool_head *pool_head_capture = NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100287
Willy Tarreau117f59e2007-03-04 18:17:17 +0100288/*
289 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200290 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100291 */
Christopher Faulet10079f52018-10-03 15:17:28 +0200292void http_capture_headers(char *som, struct hdr_idx *idx,
293 char **cap, struct cap_hdr *cap_hdr)
Willy Tarreau117f59e2007-03-04 18:17:17 +0100294{
295 char *eol, *sol, *col, *sov;
296 int cur_idx;
297 struct cap_hdr *h;
298 int len;
299
300 sol = som + hdr_idx_first_pos(idx);
301 cur_idx = hdr_idx_first_idx(idx);
302
303 while (cur_idx) {
304 eol = sol + idx->v[cur_idx].len;
305
306 col = sol;
307 while (col < eol && *col != ':')
308 col++;
309
310 sov = col + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100311 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100312 sov++;
313
314 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200315 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100316 (strncasecmp(sol, h->name, h->namelen) == 0)) {
317 if (cap[h->index] == NULL)
318 cap[h->index] =
Willy Tarreaubafbe012017-11-24 17:34:44 +0100319 pool_alloc(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100320
321 if (cap[h->index] == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100322 ha_alert("HTTP capture : out of memory.\n");
Willy Tarreau117f59e2007-03-04 18:17:17 +0100323 continue;
324 }
325
326 len = eol - sov;
327 if (len > h->len)
328 len = h->len;
329
330 memcpy(cap[h->index], sov, len);
331 cap[h->index][len]=0;
332 }
333 }
334 sol = eol + idx->v[cur_idx].cr + 1;
335 cur_idx = idx->v[cur_idx].next;
336 }
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100337}
338
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200339/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
340 * conversion succeeded, 0 in case of error. If the request was already 1.X,
341 * nothing is done and 1 is returned.
342 */
Willy Tarreau79e57332018-10-02 16:01:16 +0200343int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200344{
345 int delta;
346 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100347 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200348
349 if (msg->sl.rq.v_l != 0)
350 return 1;
351
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300352 /* RFC 1945 allows only GET for HTTP/0.9 requests */
353 if (txn->meth != HTTP_METH_GET)
354 return 0;
355
Willy Tarreauf37954d2018-06-15 18:31:02 +0200356 cur_end = ci_head(msg->chn) + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200357
358 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300359 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
360 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200361 }
362 /* add HTTP version */
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200363 delta = b_rep_blk(&msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100364 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200365 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200366 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200367 HTTP_MSG_RQMETH,
Willy Tarreauf37954d2018-06-15 18:31:02 +0200368 ci_head(msg->chn), cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200369 NULL, NULL);
370 if (unlikely(!cur_end))
371 return 0;
372
373 /* we have a full HTTP/1.0 request now and we know that
374 * we have either a CR or an LF at <ptr>.
375 */
376 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
377 return 1;
378}
379
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100380/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100381 * and "keep-alive" values. If we already know that some headers may safely
382 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100383 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
384 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100385 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100386 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
387 * found, and TX_CON_*_SET is adjusted depending on what is left so only
388 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100389 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100390 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100391void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100392{
Willy Tarreau5b154472009-12-21 20:11:07 +0100393 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100394 const char *hdr_val = "Connection";
395 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100396
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100397 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100398 return;
399
Willy Tarreau88d349d2010-01-25 12:15:43 +0100400 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
401 hdr_val = "Proxy-Connection";
402 hdr_len = 16;
403 }
404
Willy Tarreau5b154472009-12-21 20:11:07 +0100405 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100406 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreauf37954d2018-06-15 18:31:02 +0200407 while (http_find_header2(hdr_val, hdr_len, ci_head(msg->chn), &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100408 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
409 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100410 if (to_del & 2)
411 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100412 else
413 txn->flags |= TX_CON_KAL_SET;
414 }
415 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
416 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100417 if (to_del & 1)
418 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100419 else
420 txn->flags |= TX_CON_CLO_SET;
421 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100422 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
423 txn->flags |= TX_HDR_CONN_UPG;
424 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100425 }
426
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100427 txn->flags |= TX_HDR_CONN_PRS;
428 return;
429}
Willy Tarreau5b154472009-12-21 20:11:07 +0100430
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100431/* Apply desired changes on the Connection: header. Values may be removed and/or
432 * added depending on the <wanted> flags, which are exclusively composed of
433 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
434 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
435 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100436void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100437{
438 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100439 const char *hdr_val = "Connection";
440 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100441
442 ctx.idx = 0;
443
Willy Tarreau88d349d2010-01-25 12:15:43 +0100444
445 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
446 hdr_val = "Proxy-Connection";
447 hdr_len = 16;
448 }
449
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100450 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreauf37954d2018-06-15 18:31:02 +0200451 while (http_find_header2(hdr_val, hdr_len, ci_head(msg->chn), &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100452 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
453 if (wanted & TX_CON_KAL_SET)
454 txn->flags |= TX_CON_KAL_SET;
455 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100456 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100457 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100458 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
459 if (wanted & TX_CON_CLO_SET)
460 txn->flags |= TX_CON_CLO_SET;
461 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100462 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100463 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100464 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100465
466 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
467 return;
468
469 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
470 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100471 hdr_val = "Connection: close";
472 hdr_len = 17;
473 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
474 hdr_val = "Proxy-Connection: close";
475 hdr_len = 23;
476 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100477 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100478 }
479
480 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
481 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100482 hdr_val = "Connection: keep-alive";
483 hdr_len = 22;
484 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
485 hdr_val = "Proxy-Connection: keep-alive";
486 hdr_len = 28;
487 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100488 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100489 }
490 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100491}
492
Willy Tarreau87b09662015-04-03 00:22:06 +0200493void http_adjust_conn_mode(struct stream *s, struct http_txn *txn, struct http_msg *msg)
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200494{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200495 struct proxy *fe = strm_fe(s);
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200496 int tmp = TX_CON_WANT_KAL;
497
Christopher Fauletf2824e62018-10-01 12:12:37 +0200498 if (IS_HTX_STRM(s))
Christopher Faulet03b9d8b2019-03-26 22:02:00 +0100499 return;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200500
Christopher Faulet315b39c2018-09-21 16:26:19 +0200501 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
502 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
503 tmp = TX_CON_WANT_TUN;
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200504
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200505 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Christopher Faulet315b39c2018-09-21 16:26:19 +0200506 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL)
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200507 tmp = TX_CON_WANT_SCL;
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200508
Christopher Faulet315b39c2018-09-21 16:26:19 +0200509 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO ||
510 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO)
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200511 tmp = TX_CON_WANT_CLO;
512
513 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
514 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
515
516 if (!(txn->flags & TX_HDR_CONN_PRS) &&
517 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
518 /* parse the Connection header and possibly clean it */
519 int to_del = 0;
520 if ((msg->flags & HTTP_MSGF_VER_11) ||
521 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200522 !((fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200523 to_del |= 2; /* remove "keep-alive" */
524 if (!(msg->flags & HTTP_MSGF_VER_11))
525 to_del |= 1; /* remove "close" */
526 http_parse_connection_header(txn, msg, to_del);
527 }
528
529 /* check if client or config asks for explicit close in KAL/SCL */
530 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
531 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
532 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
533 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
534 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200535 fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200536 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
537}
William Lallemand82fe75c2012-10-23 10:25:10 +0200538
Willy Tarreaud787e662009-07-07 10:14:51 +0200539/* This stream analyser waits for a complete HTTP request. It returns 1 if the
540 * processing can continue on next analysers, or zero if it either needs more
541 * data or wants to immediately abort the request (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100542 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req.analysers
Willy Tarreaud787e662009-07-07 10:14:51 +0200543 * when it has nothing left to do, and may remove any analyser when it wants to
544 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100545 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200546int http_wait_for_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100547{
Willy Tarreau59234e92008-11-30 23:51:27 +0100548 /*
549 * We will parse the partial (or complete) lines.
550 * We will check the request syntax, and also join multi-line
551 * headers. An index of all the lines will be elaborated while
552 * parsing.
553 *
554 * For the parsing, we use a 28 states FSM.
555 *
556 * Here is the information we currently have :
Willy Tarreauf37954d2018-06-15 18:31:02 +0200557 * ci_head(req) = beginning of request
558 * ci_head(req) + msg->eoh = end of processed headers / start of current one
559 * ci_tail(req) = end of input data
560 * msg->eol = end of current header or line (LF or CRLF)
561 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200562 *
563 * At end of parsing, we may perform a capture of the error (if any), and
Willy Tarreaue7dff022015-04-03 01:14:29 +0200564 * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200565 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
566 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100567 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100568
Willy Tarreau59234e92008-11-30 23:51:27 +0100569 int cur_idx;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200570 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200571 struct http_txn *txn = s->txn;
Willy Tarreau59234e92008-11-30 23:51:27 +0100572 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200573 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100574
Christopher Faulete0768eb2018-10-03 16:38:02 +0200575 if (IS_HTX_STRM(s))
576 return htx_wait_for_request(s, req, an_bit);
577
Christopher Faulet45073512018-07-20 10:16:29 +0200578 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Willy Tarreau6bf17362009-02-24 10:48:35 +0100579 now_ms, __FUNCTION__,
580 s,
581 req,
582 req->rex, req->wex,
583 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +0200584 ci_data(req),
Willy Tarreau6bf17362009-02-24 10:48:35 +0100585 req->analysers);
586
Willy Tarreau52a0c602009-08-16 22:45:38 +0200587 /* we're speaking HTTP here, so let's speak HTTP to the client */
588 s->srv_error = http_return_srv_error;
589
Rian McGuire89fcb7d2018-04-24 11:19:21 -0300590 /* If there is data available for analysis, log the end of the idle time. */
Willy Tarreaud760eec2018-07-10 09:50:25 +0200591 if (c_data(req) && s->logs.t_idle == -1)
Rian McGuire89fcb7d2018-04-24 11:19:21 -0300592 s->logs.t_idle = tv_ms_elapsed(&s->logs.tv_accept, &now) - s->logs.t_handshake;
593
Willy Tarreau83e3af02009-12-28 17:39:57 +0100594 /* There's a protected area at the end of the buffer for rewriting
595 * purposes. We don't want to start to parse the request if the
596 * protected area is affected, because we may have to move processed
597 * data later, which is much more complicated.
598 */
Willy Tarreaud760eec2018-07-10 09:50:25 +0200599 if (c_data(req) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200600 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100601 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200602 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100603 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100604 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200605 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200606 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100607 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100608 return 0;
609 }
Willy Tarreau188e2302018-06-15 11:11:53 +0200610 if (unlikely(ci_tail(req) < c_ptr(req, msg->next) ||
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200611 ci_tail(req) > b_wrap(&req->buf) - global.tune.maxrewrite))
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200612 channel_slow_realign(req, trash.area);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100613 }
614
Willy Tarreauf37954d2018-06-15 18:31:02 +0200615 if (likely(msg->next < ci_data(req))) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100616 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100617 }
618
Willy Tarreau59234e92008-11-30 23:51:27 +0100619 /* 1: we might have to print this header in debug mode */
620 if (unlikely((global.mode & MODE_DEBUG) &&
621 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200622 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100623 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100624
Willy Tarreauf37954d2018-06-15 18:31:02 +0200625 sol = ci_head(req);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200626 /* this is a bit complex : in case of error on the request line,
627 * we know that rq.l is still zero, so we display only the part
628 * up to the end of the line (truncated by debug_hdr).
629 */
Willy Tarreauf37954d2018-06-15 18:31:02 +0200630 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : ci_data(req));
Willy Tarreau59234e92008-11-30 23:51:27 +0100631 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100632
Willy Tarreau59234e92008-11-30 23:51:27 +0100633 sol += hdr_idx_first_pos(&txn->hdr_idx);
634 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100635
Willy Tarreau59234e92008-11-30 23:51:27 +0100636 while (cur_idx) {
637 eol = sol + txn->hdr_idx.v[cur_idx].len;
638 debug_hdr("clihdr", s, sol, eol);
639 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
640 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100641 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100642 }
643
Willy Tarreau58f10d72006-12-04 02:26:12 +0100644
Willy Tarreau59234e92008-11-30 23:51:27 +0100645 /*
646 * Now we quickly check if we have found a full valid request.
647 * If not so, we check the FD and buffer states before leaving.
648 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100649 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100650 * requests are checked first. When waiting for a second request
Willy Tarreau87b09662015-04-03 00:22:06 +0200651 * on a keep-alive stream, if we encounter and error, close, t/o,
652 * we note the error in the stream flags but don't set any state.
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100653 * Since the error will be noted there, it will not be counted by
Willy Tarreau87b09662015-04-03 00:22:06 +0200654 * process_stream() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200655 * Last, we may increase some tracked counters' http request errors on
656 * the cases that are deliberately the client's fault. For instance,
657 * a timeout or connection reset is not counted as an error. However
658 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100659 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100660
Willy Tarreau655dce92009-11-08 13:10:58 +0100661 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100662 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100663 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100664 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100665 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200666 stream_inc_http_req_ctr(s);
667 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200668 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100669 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100670 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100671
Willy Tarreau59234e92008-11-30 23:51:27 +0100672 /* 1: Since we are in header mode, if there's no space
673 * left for headers, we won't be able to free more
Willy Tarreau87b09662015-04-03 00:22:06 +0200674 * later, so the stream will never terminate. We
Willy Tarreau59234e92008-11-30 23:51:27 +0100675 * must terminate it now.
676 */
Willy Tarreau23752332018-06-15 14:54:53 +0200677 if (unlikely(channel_full(req, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100678 /* FIXME: check if URI is set and return Status
679 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100680 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200681 stream_inc_http_req_ctr(s);
682 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200683 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200684 if (msg->err_pos < 0)
Willy Tarreauf37954d2018-06-15 18:31:02 +0200685 msg->err_pos = ci_data(req);
Willy Tarreau59234e92008-11-30 23:51:27 +0100686 goto return_bad_req;
687 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100688
Willy Tarreau59234e92008-11-30 23:51:27 +0100689 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200690 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200691 if (!(s->flags & SF_ERR_MASK))
692 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100693
Willy Tarreaufcffa692010-01-10 14:21:19 +0100694 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100695 goto failed_keep_alive;
696
Willy Tarreau0f228a02015-05-01 15:37:53 +0200697 if (sess->fe->options & PR_O_IGNORE_PRB)
698 goto failed_keep_alive;
699
Willy Tarreau59234e92008-11-30 23:51:27 +0100700 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200701 if (msg->err_pos >= 0) {
Willy Tarreaufd9419d2018-09-07 18:01:03 +0200702 http_capture_bad_message(sess->fe, s, msg, msg->err_state, sess->fe);
Willy Tarreau87b09662015-04-03 00:22:06 +0200703 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200704 }
705
Willy Tarreaudc979f22012-12-04 10:39:01 +0100706 txn->status = 400;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100707 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100708 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100709 http_reply_and_close(s, txn->status, NULL);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100710 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200711 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200712 proxy_inc_fe_req_ctr(sess->fe);
Olivier Houcharda798bf52019-03-08 18:52:00 +0100713 _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1);
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200714 if (sess->listener->counters)
Olivier Houcharda798bf52019-03-08 18:52:00 +0100715 _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200716
Willy Tarreaue7dff022015-04-03 01:14:29 +0200717 if (!(s->flags & SF_FINST_MASK))
718 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100719 return 0;
720 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200721
Willy Tarreau59234e92008-11-30 23:51:27 +0100722 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200723 else if (req->flags & CF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200724 if (!(s->flags & SF_ERR_MASK))
725 s->flags |= SF_ERR_CLITO;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100726
Willy Tarreaufcffa692010-01-10 14:21:19 +0100727 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100728 goto failed_keep_alive;
729
Willy Tarreau0f228a02015-05-01 15:37:53 +0200730 if (sess->fe->options & PR_O_IGNORE_PRB)
731 goto failed_keep_alive;
732
Willy Tarreau59234e92008-11-30 23:51:27 +0100733 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200734 if (msg->err_pos >= 0) {
Willy Tarreaufd9419d2018-09-07 18:01:03 +0200735 http_capture_bad_message(sess->fe, s, msg, msg->err_state, sess->fe);
Willy Tarreau87b09662015-04-03 00:22:06 +0200736 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200737 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100738 txn->status = 408;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100739 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100740 msg->msg_state = HTTP_MSG_ERROR;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200741 http_reply_and_close(s, txn->status, http_error_message(s));
Christopher Faulet0184ea72017-01-05 14:06:34 +0100742 req->analysers &= AN_REQ_FLT_END;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200743
Willy Tarreau87b09662015-04-03 00:22:06 +0200744 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200745 proxy_inc_fe_req_ctr(sess->fe);
Olivier Houcharda798bf52019-03-08 18:52:00 +0100746 _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1);
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200747 if (sess->listener->counters)
Olivier Houcharda798bf52019-03-08 18:52:00 +0100748 _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200749
Willy Tarreaue7dff022015-04-03 01:14:29 +0200750 if (!(s->flags & SF_FINST_MASK))
751 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100752 return 0;
753 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200754
Willy Tarreau59234e92008-11-30 23:51:27 +0100755 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200756 else if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200757 if (!(s->flags & SF_ERR_MASK))
758 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100759
Willy Tarreaufcffa692010-01-10 14:21:19 +0100760 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100761 goto failed_keep_alive;
762
Willy Tarreau0f228a02015-05-01 15:37:53 +0200763 if (sess->fe->options & PR_O_IGNORE_PRB)
764 goto failed_keep_alive;
765
Willy Tarreau4076a152009-04-02 15:18:36 +0200766 if (msg->err_pos >= 0)
Willy Tarreaufd9419d2018-09-07 18:01:03 +0200767 http_capture_bad_message(sess->fe, s, msg, msg->err_state, sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100768 txn->status = 400;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100769 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100770 msg->msg_state = HTTP_MSG_ERROR;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200771 http_reply_and_close(s, txn->status, http_error_message(s));
Christopher Faulet0184ea72017-01-05 14:06:34 +0100772 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200773 stream_inc_http_err_ctr(s);
774 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200775 proxy_inc_fe_req_ctr(sess->fe);
Olivier Houcharda798bf52019-03-08 18:52:00 +0100776 _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1);
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200777 if (sess->listener->counters)
Olivier Houcharda798bf52019-03-08 18:52:00 +0100778 _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200779
Willy Tarreaue7dff022015-04-03 01:14:29 +0200780 if (!(s->flags & SF_FINST_MASK))
781 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200782 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100783 }
784
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200785 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200786 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100787 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau1a18b542018-12-11 16:37:42 +0100788
789 if (sess->listener->options & LI_O_NOQUICKACK && ci_data(req)) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100790 /* We need more data, we have to re-enable quick-ack in case we
791 * previously disabled it, otherwise we might cause the client
792 * to delay next data.
793 */
Willy Tarreau1a18b542018-12-11 16:37:42 +0100794 conn_set_quickack(objt_conn(sess->origin), 1);
Willy Tarreau5e205522011-12-17 16:34:27 +0100795 }
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100796
Willy Tarreaufcffa692010-01-10 14:21:19 +0100797 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
798 /* If the client starts to talk, let's fall back to
799 * request timeout processing.
800 */
801 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100802 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100803 }
804
Willy Tarreau59234e92008-11-30 23:51:27 +0100805 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100806 if (!tick_isset(req->analyse_exp)) {
807 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
808 (txn->flags & TX_WAIT_NEXT_RQ) &&
809 tick_isset(s->be->timeout.httpka))
810 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
811 else
812 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
813 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100814
Willy Tarreau59234e92008-11-30 23:51:27 +0100815 /* we're not ready yet */
816 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100817
818 failed_keep_alive:
819 /* Here we process low-level errors for keep-alive requests. In
820 * short, if the request is not the first one and it experiences
821 * a timeout, read error or shutdown, we just silently close so
822 * that the client can try again.
823 */
824 txn->status = 0;
825 msg->msg_state = HTTP_MSG_RQBEFORE;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100826 req->analysers &= AN_REQ_FLT_END;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100827 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200828 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100829 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100830 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100831 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100832 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100833
Willy Tarreaud787e662009-07-07 10:14:51 +0200834 /* OK now we have a complete HTTP request with indexed headers. Let's
835 * complete the request parsing by setting a few fields we will need
Willy Tarreauc9fa0482018-07-10 17:43:27 +0200836 * later. At this point, we have the last CRLF at req->buf.data + msg->eoh.
Willy Tarreaufa355d42009-11-29 18:12:29 +0100837 * If the request is in HTTP/0.9 form, the rule is still true, and eoh
Willy Tarreaua458b672012-03-05 11:17:50 +0100838 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100839 * byte after the last LF. msg->sov points to the first byte of data.
840 * msg->eol cannot be trusted because it may have been left uninitialized
841 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200842 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200843
Willy Tarreau87b09662015-04-03 00:22:06 +0200844 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200845 proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100846
Willy Tarreaub16a5742010-01-10 14:46:16 +0100847 if (txn->flags & TX_WAIT_NEXT_RQ) {
848 /* kill the pending keep-alive timeout */
849 txn->flags &= ~TX_WAIT_NEXT_RQ;
850 req->analyse_exp = TICK_ETERNITY;
851 }
852
853
Willy Tarreaud787e662009-07-07 10:14:51 +0200854 /* Maybe we found in invalid header name while we were configured not
855 * to block on that, so we have to capture it now.
856 */
857 if (unlikely(msg->err_pos >= 0))
Willy Tarreaufd9419d2018-09-07 18:01:03 +0200858 http_capture_bad_message(sess->fe, s, msg, msg->err_state, sess->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200859
Willy Tarreau59234e92008-11-30 23:51:27 +0100860 /*
861 * 1: identify the method
862 */
Willy Tarreauf37954d2018-06-15 18:31:02 +0200863 txn->meth = find_http_meth(ci_head(req), msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100864
865 /* we can make use of server redirect on GET and HEAD */
866 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200867 s->flags |= SF_REDIRECTABLE;
Willy Tarreau91659792017-11-10 19:38:10 +0100868 else if (txn->meth == HTTP_METH_OTHER &&
Willy Tarreauf37954d2018-06-15 18:31:02 +0200869 msg->sl.rq.m_l == 3 && memcmp(ci_head(req), "PRI", 3) == 0) {
Willy Tarreau91659792017-11-10 19:38:10 +0100870 /* PRI is reserved for the HTTP/2 preface */
871 msg->err_pos = 0;
872 goto return_bad_req;
873 }
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200874
Willy Tarreau59234e92008-11-30 23:51:27 +0100875 /*
876 * 2: check if the URI matches the monitor_uri.
877 * We have to do this for every request which gets in, because
878 * the monitor-uri is defined by the frontend.
879 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200880 if (unlikely((sess->fe->monitor_uri_len != 0) &&
881 (sess->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreauf37954d2018-06-15 18:31:02 +0200882 !memcmp(ci_head(req) + msg->sl.rq.u,
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200883 sess->fe->monitor_uri,
884 sess->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100885 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100886 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100887 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100888 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100889
Willy Tarreaue7dff022015-04-03 01:14:29 +0200890 s->flags |= SF_MONITOR;
Olivier Houcharda798bf52019-03-08 18:52:00 +0100891 _HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1);
Willy Tarreaub80c2302007-11-30 20:51:32 +0100892
Willy Tarreau59234e92008-11-30 23:51:27 +0100893 /* Check if we want to fail this monitor request or not */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200894 list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200895 int ret = acl_exec_cond(cond, sess->fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau11382812008-07-09 16:18:21 +0200896
Willy Tarreau59234e92008-11-30 23:51:27 +0100897 ret = acl_pass(ret);
898 if (cond->pol == ACL_COND_UNLESS)
899 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100900
Willy Tarreau59234e92008-11-30 23:51:27 +0100901 if (ret) {
902 /* we fail this request, let's return 503 service unavail */
903 txn->status = 503;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200904 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200905 if (!(s->flags & SF_ERR_MASK))
906 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100907 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100908 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100909 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100910
Joseph Herlant5ba80252018-11-15 09:25:36 -0800911 /* nothing to fail, let's reply normally */
Willy Tarreau59234e92008-11-30 23:51:27 +0100912 txn->status = 200;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200913 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200914 if (!(s->flags & SF_ERR_MASK))
915 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100916 goto return_prx_cond;
917 }
918
919 /*
920 * 3: Maybe we have to copy the original REQURI for the logs ?
921 * Note: we cannot log anymore if the request has been
922 * classified as invalid.
923 */
924 if (unlikely(s->logs.logwait & LW_REQ)) {
925 /* we have a complete HTTP request that we must log */
Willy Tarreaubafbe012017-11-24 17:34:44 +0100926 if ((txn->uri = pool_alloc(pool_head_requri)) != NULL) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100927 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100928
Stéphane Cottin23e9e932017-05-18 08:58:41 +0200929 if (urilen >= global.tune.requri_len )
930 urilen = global.tune.requri_len - 1;
Willy Tarreauf37954d2018-06-15 18:31:02 +0200931 memcpy(txn->uri, ci_head(req), urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100932 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100933
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100934 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100935 s->do_log(s);
936 } else {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100937 ha_alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100938 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100939 }
Willy Tarreau06619262006-12-17 08:37:22 +0100940
Willy Tarreau91852eb2015-05-01 13:26:00 +0200941 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
942 * exactly one digit "." one digit. This check may be disabled using
943 * option accept-invalid-http-request.
944 */
945 if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) {
946 if (msg->sl.rq.v_l != 8) {
947 msg->err_pos = msg->sl.rq.v;
948 goto return_bad_req;
949 }
950
Willy Tarreauf37954d2018-06-15 18:31:02 +0200951 if (ci_head(req)[msg->sl.rq.v + 4] != '/' ||
952 !isdigit((unsigned char)ci_head(req)[msg->sl.rq.v + 5]) ||
953 ci_head(req)[msg->sl.rq.v + 6] != '.' ||
954 !isdigit((unsigned char)ci_head(req)[msg->sl.rq.v + 7])) {
Willy Tarreau91852eb2015-05-01 13:26:00 +0200955 msg->err_pos = msg->sl.rq.v + 4;
956 goto return_bad_req;
957 }
958 }
Willy Tarreau13317662015-05-01 13:47:08 +0200959 else {
960 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
961 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
962 goto return_bad_req;
963 }
Willy Tarreau91852eb2015-05-01 13:26:00 +0200964
Willy Tarreau5b154472009-12-21 20:11:07 +0100965 /* ... and check if the request is HTTP/1.1 or above */
966 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreauf37954d2018-06-15 18:31:02 +0200967 ((ci_head(req)[msg->sl.rq.v + 5] > '1') ||
968 ((ci_head(req)[msg->sl.rq.v + 5] == '1') &&
969 (ci_head(req)[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100970 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100971
972 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100973 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL | TX_HDR_CONN_UPG);
Willy Tarreau5b154472009-12-21 20:11:07 +0100974
Willy Tarreau88d349d2010-01-25 12:15:43 +0100975 /* if the frontend has "option http-use-proxy-header", we'll check if
976 * we have what looks like a proxied connection instead of a connection,
977 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
978 * Note that this is *not* RFC-compliant, however browsers and proxies
979 * happen to do that despite being non-standard :-(
980 * We consider that a request not beginning with either '/' or '*' is
981 * a proxied connection, which covers both "scheme://location" and
982 * CONNECT ip:port.
983 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200984 if ((sess->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreauf37954d2018-06-15 18:31:02 +0200985 ci_head(req)[msg->sl.rq.u] != '/' && ci_head(req)[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100986 txn->flags |= TX_USE_PX_CONN;
987
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100988 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100989 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100990
Willy Tarreau59234e92008-11-30 23:51:27 +0100991 /* 5: we may need to capture headers */
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200992 if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap))
Christopher Faulet10079f52018-10-03 15:17:28 +0200993 http_capture_headers(ci_head(req), &txn->hdr_idx,
994 s->req_cap, sess->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200995
Willy Tarreau557f1992015-05-01 10:05:17 +0200996 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
997 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100998 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200999 * The length of a message body is determined by one of the following
1000 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +02001001 *
Willy Tarreau557f1992015-05-01 10:05:17 +02001002 * 1. Any response to a HEAD request and any response with a 1xx
1003 * (Informational), 204 (No Content), or 304 (Not Modified) status
1004 * code is always terminated by the first empty line after the
1005 * header fields, regardless of the header fields present in the
1006 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +02001007 *
Willy Tarreau557f1992015-05-01 10:05:17 +02001008 * 2. Any 2xx (Successful) response to a CONNECT request implies that
1009 * the connection will become a tunnel immediately after the empty
1010 * line that concludes the header fields. A client MUST ignore any
1011 * Content-Length or Transfer-Encoding header fields received in
1012 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +01001013 *
Willy Tarreau557f1992015-05-01 10:05:17 +02001014 * 3. If a Transfer-Encoding header field is present and the chunked
1015 * transfer coding (Section 4.1) is the final encoding, the message
1016 * body length is determined by reading and decoding the chunked
1017 * data until the transfer coding indicates the data is complete.
1018 *
1019 * If a Transfer-Encoding header field is present in a response and
1020 * the chunked transfer coding is not the final encoding, the
1021 * message body length is determined by reading the connection until
1022 * it is closed by the server. If a Transfer-Encoding header field
1023 * is present in a request and the chunked transfer coding is not
1024 * the final encoding, the message body length cannot be determined
1025 * reliably; the server MUST respond with the 400 (Bad Request)
1026 * status code and then close the connection.
1027 *
1028 * If a message is received with both a Transfer-Encoding and a
1029 * Content-Length header field, the Transfer-Encoding overrides the
1030 * Content-Length. Such a message might indicate an attempt to
1031 * perform request smuggling (Section 9.5) or response splitting
1032 * (Section 9.4) and ought to be handled as an error. A sender MUST
1033 * remove the received Content-Length field prior to forwarding such
1034 * a message downstream.
1035 *
1036 * 4. If a message is received without Transfer-Encoding and with
1037 * either multiple Content-Length header fields having differing
1038 * field-values or a single Content-Length header field having an
1039 * invalid value, then the message framing is invalid and the
1040 * recipient MUST treat it as an unrecoverable error. If this is a
1041 * request message, the server MUST respond with a 400 (Bad Request)
1042 * status code and then close the connection. If this is a response
1043 * message received by a proxy, the proxy MUST close the connection
1044 * to the server, discard the received response, and send a 502 (Bad
1045 * Gateway) response to the client. If this is a response message
1046 * received by a user agent, the user agent MUST close the
1047 * connection to the server and discard the received response.
1048 *
1049 * 5. If a valid Content-Length header field is present without
1050 * Transfer-Encoding, its decimal value defines the expected message
1051 * body length in octets. If the sender closes the connection or
1052 * the recipient times out before the indicated number of octets are
1053 * received, the recipient MUST consider the message to be
1054 * incomplete and close the connection.
1055 *
1056 * 6. If this is a request message and none of the above are true, then
1057 * the message body length is zero (no message body is present).
1058 *
1059 * 7. Otherwise, this is a response message without a declared message
1060 * body length, so the message body length is determined by the
1061 * number of octets received prior to the server closing the
1062 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +02001063 */
1064
Willy Tarreau32b47f42009-10-18 20:55:02 +02001065 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +01001066 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreauf37954d2018-06-15 18:31:02 +02001067 while (http_find_header2("Transfer-Encoding", 17, ci_head(req), &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +01001068 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Christopher Fauletbe821b92017-03-30 11:21:53 +02001069 msg->flags |= HTTP_MSGF_TE_CHNK;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01001070 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau34dfc602015-05-01 10:09:49 +02001071 /* chunked not last, return badreq */
1072 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +01001073 }
Willy Tarreau32b47f42009-10-18 20:55:02 +02001074 }
1075
Willy Tarreau1c913912015-04-30 10:57:51 +02001076 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +02001077 ctx.idx = 0;
Willy Tarreau1c913912015-04-30 10:57:51 +02001078 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02001079 while (http_find_header2("Content-Length", 14, ci_head(req), &txn->hdr_idx, &ctx))
Willy Tarreau1c913912015-04-30 10:57:51 +02001080 http_remove_header2(msg, &txn->hdr_idx, &ctx);
1081 }
Willy Tarreauf37954d2018-06-15 18:31:02 +02001082 else while (http_find_header2("Content-Length", 14, ci_head(req), &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +02001083 signed long long cl;
1084
Willy Tarreauad14f752011-09-02 20:33:27 +02001085 if (!ctx.vlen) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02001086 msg->err_pos = ctx.line + ctx.val - ci_head(req);
Willy Tarreau32b47f42009-10-18 20:55:02 +02001087 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +02001088 }
Willy Tarreau32b47f42009-10-18 20:55:02 +02001089
Willy Tarreauad14f752011-09-02 20:33:27 +02001090 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02001091 msg->err_pos = ctx.line + ctx.val - ci_head(req);
Willy Tarreau32b47f42009-10-18 20:55:02 +02001092 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +02001093 }
Willy Tarreau32b47f42009-10-18 20:55:02 +02001094
Willy Tarreauad14f752011-09-02 20:33:27 +02001095 if (cl < 0) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02001096 msg->err_pos = ctx.line + ctx.val - ci_head(req);
Willy Tarreau32b47f42009-10-18 20:55:02 +02001097 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +02001098 }
Willy Tarreau32b47f42009-10-18 20:55:02 +02001099
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01001100 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02001101 msg->err_pos = ctx.line + ctx.val - ci_head(req);
Willy Tarreau32b47f42009-10-18 20:55:02 +02001102 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +02001103 }
Willy Tarreau32b47f42009-10-18 20:55:02 +02001104
Christopher Fauletbe821b92017-03-30 11:21:53 +02001105 msg->flags |= HTTP_MSGF_CNT_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +01001106 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +02001107 }
1108
Willy Tarreau34dfc602015-05-01 10:09:49 +02001109 /* even bodyless requests have a known length */
1110 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +01001111
Willy Tarreau179085c2014-04-28 16:48:56 +02001112 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
1113 * only change if both the request and the config reference something else.
1114 * Option httpclose by itself sets tunnel mode where headers are mangled.
1115 * However, if another mode is set, it will affect it (eg: server-close/
1116 * keep-alive + httpclose = close). Note that we avoid to redo the same work
1117 * if FE and BE have the same settings (common). The method consists in
1118 * checking if options changed between the two calls (implying that either
1119 * one is non-null, or one of them is non-null and we are there for the first
1120 * time.
1121 */
1122 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02001123 ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +02001124 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +02001125
Willy Tarreau9fbe18e2015-05-01 22:42:08 +02001126 /* we may have to wait for the request's body */
1127 if ((s->be->options & PR_O_WREQ_BODY) &&
1128 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
1129 req->analysers |= AN_REQ_HTTP_BODY;
1130
Willy Tarreau83ece462017-12-21 15:13:09 +01001131 /*
1132 * RFC7234#4:
1133 * A cache MUST write through requests with methods
1134 * that are unsafe (Section 4.2.1 of [RFC7231]) to
1135 * the origin server; i.e., a cache is not allowed
1136 * to generate a reply to such a request before
1137 * having forwarded the request and having received
1138 * a corresponding response.
1139 *
1140 * RFC7231#4.2.1:
1141 * Of the request methods defined by this
1142 * specification, the GET, HEAD, OPTIONS, and TRACE
1143 * methods are defined to be safe.
1144 */
1145 if (likely(txn->meth == HTTP_METH_GET ||
1146 txn->meth == HTTP_METH_HEAD ||
1147 txn->meth == HTTP_METH_OPTIONS ||
1148 txn->meth == HTTP_METH_TRACE))
1149 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
1150
Willy Tarreaud787e662009-07-07 10:14:51 +02001151 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +02001152 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +02001153 req->analyse_exp = TICK_ETERNITY;
1154 return 1;
1155
1156 return_bad_req:
1157 /* We centralize bad requests processing here */
1158 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
1159 /* we detected a parsing error. We want to archive this request
1160 * in the dedicated proxy area for later troubleshooting.
1161 */
Willy Tarreaufd9419d2018-09-07 18:01:03 +02001162 http_capture_bad_message(sess->fe, s, msg, msg->err_state, sess->fe);
Willy Tarreaud787e662009-07-07 10:14:51 +02001163 }
1164
Willy Tarreau10e61cb2017-01-04 14:51:22 +01001165 txn->req.err_state = txn->req.msg_state;
Willy Tarreaud787e662009-07-07 10:14:51 +02001166 txn->req.msg_state = HTTP_MSG_ERROR;
1167 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02001168 http_reply_and_close(s, txn->status, http_error_message(s));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +02001169
Olivier Houcharda798bf52019-03-08 18:52:00 +01001170 _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1);
Willy Tarreaufb0afa72015-04-03 14:46:27 +02001171 if (sess->listener->counters)
Olivier Houcharda798bf52019-03-08 18:52:00 +01001172 _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1);
Willy Tarreaud787e662009-07-07 10:14:51 +02001173
1174 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +02001175 if (!(s->flags & SF_ERR_MASK))
1176 s->flags |= SF_ERR_PRXCOND;
1177 if (!(s->flags & SF_FINST_MASK))
1178 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +02001179
Christopher Faulet0184ea72017-01-05 14:06:34 +01001180 req->analysers &= AN_REQ_FLT_END;
Willy Tarreaud787e662009-07-07 10:14:51 +02001181 req->analyse_exp = TICK_ETERNITY;
1182 return 0;
1183}
1184
Willy Tarreau4f8a83c2012-06-04 00:26:23 +02001185
Willy Tarreau347a35d2013-11-22 17:51:09 +01001186/* This function prepares an applet to handle the stats. It can deal with the
1187 * "100-continue" expectation, check that admin rules are met for POST requests,
1188 * and program a response message if something was unexpected. It cannot fail
1189 * and always relies on the stats applet to complete the job. It does not touch
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001190 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001191 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +02001192 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +01001193 */
Willy Tarreau87b09662015-04-03 00:22:06 +02001194int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +01001195{
1196 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +01001197 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +02001198 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +02001199 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +01001200 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001201 struct uri_auth *uri_auth = s->be->uri_auth;
1202 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001203 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001204
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001205 appctx = si_appctx(si);
1206 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
1207 appctx->st1 = appctx->st2 = 0;
1208 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
1209 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +02001210 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +02001211 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001212
Willy Tarreauf37954d2018-06-15 18:31:02 +02001213 uri = ci_head(msg->chn) + msg->sl.rq.u;
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001214 lookup = uri + uri_auth->uri_len;
1215
1216 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
1217 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001218 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001219 break;
1220 }
1221 }
1222
1223 if (uri_auth->refresh) {
1224 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
1225 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001226 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001227 break;
1228 }
1229 }
1230 }
1231
1232 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
1233 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001234 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001235 break;
1236 }
1237 }
1238
Willy Tarreau1e62df92016-01-11 18:57:53 +01001239 for (h = lookup; h <= uri + msg->sl.rq.u_l - 6; h++) {
1240 if (memcmp(h, ";typed", 6) == 0) {
1241 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
1242 appctx->ctx.stats.flags |= STAT_FMT_TYPED;
1243 break;
1244 }
1245 }
1246
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001247 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
1248 if (memcmp(h, ";st=", 4) == 0) {
1249 int i;
1250 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001251 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001252 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
1253 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001254 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001255 break;
1256 }
1257 }
1258 break;
1259 }
1260 }
1261
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001262 appctx->ctx.stats.scope_str = 0;
1263 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001264 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
1265 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
1266 int itx = 0;
1267 const char *h2;
1268 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
1269 const char *err;
1270
1271 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
1272 h2 = h;
Willy Tarreauf37954d2018-06-15 18:31:02 +02001273 appctx->ctx.stats.scope_str = h2 - ci_head(msg->chn);
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001274 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
1275 itx++;
1276 h++;
1277 }
1278
1279 if (itx > STAT_SCOPE_TXT_MAXLEN)
1280 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001281 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001282
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001283 /* scope_txt = search query, appctx->ctx.stats.scope_len is always <= STAT_SCOPE_TXT_MAXLEN */
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001284 memcpy(scope_txt, h2, itx);
1285 scope_txt[itx] = '\0';
1286 err = invalid_char(scope_txt);
1287 if (err) {
1288 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001289 appctx->ctx.stats.scope_str = 0;
1290 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001291 }
1292 break;
1293 }
1294 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +01001295
1296 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +01001297 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +01001298 int ret = 1;
1299
1300 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02001301 ret = acl_exec_cond(stats_admin_rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau1facd6d2012-12-22 22:03:39 +01001302 ret = acl_pass(ret);
1303 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
1304 ret = !ret;
1305 }
1306
1307 if (ret) {
1308 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001309 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +01001310 break;
1311 }
1312 }
1313
Christopher Faulet5d45e382019-02-27 15:15:23 +01001314 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
1315 appctx->st0 = STAT_HTTP_HEAD;
1316 else if (txn->meth == HTTP_METH_POST && (msg->flags & HTTP_MSGF_CNT_LEN)) {
Christopher Fauletbcf242a2019-03-01 11:36:26 +01001317 if (appctx->ctx.stats.flags & STAT_ADMIN)
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001318 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau347a35d2013-11-22 17:51:09 +01001319 else {
Christopher Faulet5d45e382019-02-27 15:15:23 +01001320 /* POST without admin level */
1321 appctx->ctx.stats.flags &= ~STAT_CHUNKED;
Willy Tarreau7b4b4992013-12-01 09:15:12 +01001322 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
1323 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +02001324 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +01001325 }
Willy Tarreau347a35d2013-11-22 17:51:09 +01001326 else {
Christopher Faulet5d45e382019-02-27 15:15:23 +01001327 /* Unsupported method or chunked POST */
1328 appctx->ctx.stats.flags &= ~STAT_CHUNKED;
1329 appctx->ctx.stats.st_code = STAT_STATUS_IVAL;
1330 appctx->st0 = STAT_HTTP_LAST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +01001331 }
1332
Willy Tarreau1facd6d2012-12-22 22:03:39 +01001333 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +01001334 return 1;
1335}
1336
Willy Tarreau87b09662015-04-03 00:22:06 +02001337int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +01001338 const char* name, unsigned int name_len,
1339 const char *str, struct my_regex *re,
1340 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -06001341{
Willy Tarreaueee5b512015-04-03 23:46:31 +02001342 struct hdr_idx *idx = &s->txn->hdr_idx;
Willy Tarreau83061a82018-07-13 11:56:34 +02001343 struct buffer *output = get_trash_chunk();
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +01001344
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +01001345 /* Choose the header browsing function. */
1346 switch (action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001347 case ACT_HTTP_REPLACE_VAL:
Willy Tarreauc5a4fd52018-12-11 11:42:27 +01001348 return http_legacy_replace_header(idx, msg, name, name_len, str, re, output);
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001349 case ACT_HTTP_REPLACE_HDR:
Willy Tarreauc5a4fd52018-12-11 11:42:27 +01001350 return http_legacy_replace_full_header(idx, msg, name, name_len, str, re, output);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +01001351 default: /* impossible */
1352 return -1;
1353 }
Sasha Pachev218f0642014-06-16 12:05:59 -06001354}
1355
Willy Tarreau87b09662015-04-03 00:22:06 +02001356static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +01001357 const char* name, unsigned int name_len,
1358 struct list *fmt, struct my_regex *re,
1359 int action)
1360{
Willy Tarreau83061a82018-07-13 11:56:34 +02001361 struct buffer *replace;
Christopher Faulet07a0fec2017-02-08 12:17:07 +01001362 int ret = -1;
1363
1364 replace = alloc_trash_chunk();
1365 if (!replace)
1366 goto leave;
Thierry FOURNIER5531f872015-03-16 11:15:50 +01001367
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001368 replace->data = build_logline(s, replace->area, replace->size, fmt);
1369 if (replace->data >= replace->size - 1)
Christopher Faulet07a0fec2017-02-08 12:17:07 +01001370 goto leave;
1371
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001372 ret = http_transform_header_str(s, msg, name, name_len, replace->area,
1373 re, action);
Thierry FOURNIER5531f872015-03-16 11:15:50 +01001374
Christopher Faulet07a0fec2017-02-08 12:17:07 +01001375 leave:
1376 free_trash_chunk(replace);
1377 return ret;
Thierry FOURNIER5531f872015-03-16 11:15:50 +01001378}
1379
Christopher Faulet87451fd2019-03-01 11:16:34 +01001380/* Handle Expect: 100-continue for HTTP/1.1 messages if necessary. */
1381static void http_handle_expect_hdr(struct stream *s, struct channel *req, struct http_msg *msg)
1382{
1383 /* If we have HTTP/1.1 message with a body and Expect: 100-continue,
1384 * then we must send an HTTP/1.1 100 Continue intermediate response.
1385 */
1386 if (msg->msg_state == HTTP_MSG_BODY && (msg->flags & HTTP_MSGF_VER_11) &&
1387 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
1388 struct hdr_ctx ctx;
1389 ctx.idx = 0;
1390 /* Expect is allowed in 1.1, look for it */
1391 if (http_find_header2("Expect", 6, ci_head(req), &s->txn->hdr_idx, &ctx) &&
1392 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
1393 co_inject(&s->res, HTTP_100.ptr, HTTP_100.len);
1394 http_remove_header2(&s->txn->req, &s->txn->hdr_idx, &ctx);
1395 }
1396 }
1397}
1398
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001399/*
1400 * Build an HTTP Early Hint HTTP 103 response header with <name> as name and with a value
1401 * built according to <fmt> log line format.
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001402 * If <early_hints> is NULL, it is allocated and the HTTP 103 response first
1403 * line is inserted before the header. If an error occurred <early_hints> is
1404 * released and NULL is returned. On success the updated buffer is returned.
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001405 */
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001406static struct buffer *http_apply_early_hint_rule(struct stream* s, struct buffer *early_hints,
1407 const char* name, unsigned int name_len,
1408 struct list *fmt)
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001409{
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001410 if (!early_hints) {
1411 early_hints = alloc_trash_chunk();
1412 if (!early_hints)
1413 goto fail;
1414 if (!chunk_memcat(early_hints, HTTP_103.ptr, HTTP_103.len))
1415 goto fail;
1416 }
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001417
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001418 if (!chunk_memcat(early_hints, name, name_len) || !chunk_memcat(early_hints, ": ", 2))
1419 goto fail;
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001420
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001421 early_hints->data += build_logline(s, b_tail(early_hints), b_room(early_hints), fmt);
1422 if (!chunk_memcat(early_hints, "\r\n", 2))
1423 goto fail;
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001424
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001425 return early_hints;
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001426
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001427 fail:
1428 free_trash_chunk(early_hints);
1429 return NULL;
1430}
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001431
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001432/* Sends an HTTP 103 response. Before sending it, the last CRLF finishing the
1433 * response is added. If an error occurred or if another response was already
1434 * sent, this function does nothing.
1435 */
1436static void http_send_early_hints(struct stream *s, struct buffer *early_hints)
1437{
1438 struct channel *chn = s->txn->rsp.chn;
1439 char *cur_ptr = ci_head(chn);
1440 int ret;
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001441
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001442 /* If a response was already sent, skip early hints */
1443 if (s->txn->status > 0)
1444 return;
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001445
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001446 if (!chunk_memcat(early_hints, "\r\n", 2))
1447 return;
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001448
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001449 ret = b_rep_blk(&chn->buf, cur_ptr, cur_ptr, b_head(early_hints), b_data(early_hints));
1450 c_adv(chn, ret);
1451 chn->total += ret;
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001452}
1453
Willy Tarreau87b09662015-04-03 00:22:06 +02001454/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +02001455 * transaction <txn>. Returns the verdict of the first rule that prevents
1456 * further processing of the request (auth, deny, ...), and defaults to
1457 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
1458 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
Willy Tarreau58727ec2016-05-25 16:23:59 +02001459 * on txn->flags if it encounters a tarpit rule. If <deny_status> is not NULL
1460 * and a deny/tarpit rule is matched, it will be filled with this rule's deny
1461 * status.
Willy Tarreauf68a15a2011-01-06 16:53:21 +01001462 */
Willy Tarreau0b748332014-04-29 00:13:29 +02001463enum rule_result
Willy Tarreau58727ec2016-05-25 16:23:59 +02001464http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s, int *deny_status)
Willy Tarreauf68a15a2011-01-06 16:53:21 +01001465{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +02001466 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +02001467 struct http_txn *txn = s->txn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +02001468 struct act_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +01001469 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +02001470 const char *auth_realm;
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001471 struct buffer *early_hints = NULL;
Christopher Fauletea827bd2018-11-15 15:34:11 +01001472 enum rule_result rule_ret = HTTP_RULE_RES_CONT;
Willy Tarreauacc98002015-09-27 23:34:39 +02001473 int act_flags = 0;
Thierry Fournier4b788f72016-06-01 13:35:36 +02001474 int len;
Willy Tarreauf68a15a2011-01-06 16:53:21 +01001475
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01001476 /* If "the current_rule_list" match the executed rule list, we are in
1477 * resume condition. If a resume is needed it is always in the action
1478 * and never in the ACL or converters. In this case, we initialise the
1479 * current rule, and go to the action execution point.
1480 */
Willy Tarreau152b81e2015-04-20 13:26:17 +02001481 if (s->current_rule) {
1482 rule = s->current_rule;
1483 s->current_rule = NULL;
1484 if (s->current_rule_list == rules)
1485 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01001486 }
1487 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +02001488
Willy Tarreauff011f22011-01-06 17:51:27 +01001489 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +01001490
Willy Tarreau96257ec2012-12-27 10:46:37 +01001491 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +01001492 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +01001493 int ret;
1494
Willy Tarreau192252e2015-04-04 01:47:55 +02001495 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf68a15a2011-01-06 16:53:21 +01001496 ret = acl_pass(ret);
1497
Willy Tarreauff011f22011-01-06 17:51:27 +01001498 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +01001499 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +01001500
1501 if (!ret) /* condition not matched */
1502 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +01001503 }
1504
Willy Tarreauacc98002015-09-27 23:34:39 +02001505 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01001506resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +01001507 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001508 case ACT_ACTION_ALLOW:
Christopher Fauletea827bd2018-11-15 15:34:11 +01001509 rule_ret = HTTP_RULE_RES_STOP;
1510 goto end;
Willy Tarreau96257ec2012-12-27 10:46:37 +01001511
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001512 case ACT_ACTION_DENY:
Willy Tarreau58727ec2016-05-25 16:23:59 +02001513 if (deny_status)
1514 *deny_status = rule->deny_status;
Christopher Fauletea827bd2018-11-15 15:34:11 +01001515 rule_ret = HTTP_RULE_RES_DENY;
1516 goto end;
Willy Tarreau96257ec2012-12-27 10:46:37 +01001517
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001518 case ACT_HTTP_REQ_TARPIT:
Willy Tarreauccbcc372012-12-27 12:37:57 +01001519 txn->flags |= TX_CLTARPIT;
Willy Tarreau58727ec2016-05-25 16:23:59 +02001520 if (deny_status)
1521 *deny_status = rule->deny_status;
Christopher Fauletea827bd2018-11-15 15:34:11 +01001522 rule_ret = HTTP_RULE_RES_DENY;
1523 goto end;
Willy Tarreauccbcc372012-12-27 12:37:57 +01001524
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001525 case ACT_HTTP_REQ_AUTH:
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001526 /* Be sure to send any pending HTTP 103 response first */
1527 if (early_hints) {
1528 http_send_early_hints(s, early_hints);
1529 free_trash_chunk(early_hints);
1530 early_hints = NULL;
1531 }
Willy Tarreauae3c0102014-04-28 23:22:08 +02001532 /* Auth might be performed on regular http-req rules as well as on stats */
1533 auth_realm = rule->arg.auth.realm;
1534 if (!auth_realm) {
1535 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
1536 auth_realm = STATS_DEFAULT_REALM;
1537 else
1538 auth_realm = px->id;
1539 }
1540 /* send 401/407 depending on whether we use a proxy or not. We still
1541 * count one error, because normal browsing won't significantly
1542 * increase the counter but brute force attempts will.
1543 */
1544 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
1545 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
Christopher Fauleta94e5a52015-12-09 15:55:06 +01001546 http_reply_and_close(s, txn->status, &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +02001547 stream_inc_http_err_ctr(s);
Christopher Fauletea827bd2018-11-15 15:34:11 +01001548 rule_ret = HTTP_RULE_RES_ABRT;
1549 goto end;
Willy Tarreau96257ec2012-12-27 10:46:37 +01001550
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001551 case ACT_HTTP_REDIR:
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001552 /* Be sure to send any pending HTTP 103 response first */
1553 if (early_hints) {
1554 http_send_early_hints(s, early_hints);
1555 free_trash_chunk(early_hints);
1556 early_hints = NULL;
1557 }
Christopher Fauletea827bd2018-11-15 15:34:11 +01001558 rule_ret = HTTP_RULE_RES_DONE;
Willy Tarreau0b748332014-04-29 00:13:29 +02001559 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
Christopher Fauletea827bd2018-11-15 15:34:11 +01001560 rule_ret = HTTP_RULE_RES_BADREQ;
1561 goto end;
Willy Tarreau81499eb2012-12-27 12:19:02 +01001562
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001563 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +02001564 s->task->nice = rule->arg.nice;
1565 break;
1566
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001567 case ACT_HTTP_SET_TOS:
Willy Tarreau1a18b542018-12-11 16:37:42 +01001568 conn_set_tos(objt_conn(sess->origin), rule->arg.tos);
Willy Tarreau42cf39e2013-06-11 18:51:32 +02001569 break;
1570
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001571 case ACT_HTTP_SET_MARK:
Willy Tarreau1a18b542018-12-11 16:37:42 +01001572 conn_set_mark(objt_conn(sess->origin), rule->arg.mark);
Willy Tarreau51347ed2013-06-11 19:34:13 +02001573 break;
1574
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001575 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +02001576 s->logs.level = rule->arg.loglevel;
1577 break;
1578
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001579 case ACT_HTTP_REPLACE_HDR:
1580 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +01001581 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
1582 rule->arg.hdr_add.name_len,
1583 &rule->arg.hdr_add.fmt,
Dragan Dosen26743032019-04-30 15:54:36 +02001584 rule->arg.hdr_add.re, rule->action)) {
Christopher Fauletea827bd2018-11-15 15:34:11 +01001585 rule_ret = HTTP_RULE_RES_BADREQ;
1586 goto end;
1587 }
Sasha Pachev218f0642014-06-16 12:05:59 -06001588 break;
1589
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001590 case ACT_HTTP_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +01001591 ctx.idx = 0;
1592 /* remove all occurrences of the header */
1593 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
Willy Tarreauf37954d2018-06-15 18:31:02 +02001594 ci_head(txn->req.chn), &txn->hdr_idx, &ctx)) {
Willy Tarreau96257ec2012-12-27 10:46:37 +01001595 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +01001596 }
Willy Tarreau85603282015-01-21 20:39:27 +01001597 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +01001598
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001599 case ACT_HTTP_SET_HDR:
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001600 case ACT_HTTP_ADD_HDR: {
Thierry Fournier4b788f72016-06-01 13:35:36 +02001601 /* The scope of the trash buffer must be limited to this function. The
1602 * build_logline() function can execute a lot of other function which
1603 * can use the trash buffer. So for limiting the scope of this global
1604 * buffer, we build first the header value using build_logline, and
1605 * after we store the header name.
1606 */
Willy Tarreau83061a82018-07-13 11:56:34 +02001607 struct buffer *replace;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001608
1609 replace = alloc_trash_chunk();
Christopher Fauletea827bd2018-11-15 15:34:11 +01001610 if (!replace) {
1611 rule_ret = HTTP_RULE_RES_BADREQ;
1612 goto end;
1613 }
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001614
Thierry Fournier4b788f72016-06-01 13:35:36 +02001615 len = rule->arg.hdr_add.name_len + 2,
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001616 len += build_logline(s, replace->area + len,
1617 replace->size - len,
1618 &rule->arg.hdr_add.fmt);
1619 memcpy(replace->area, rule->arg.hdr_add.name,
1620 rule->arg.hdr_add.name_len);
1621 replace->area[rule->arg.hdr_add.name_len] = ':';
1622 replace->area[rule->arg.hdr_add.name_len + 1] = ' ';
1623 replace->data = len;
Willy Tarreau85603282015-01-21 20:39:27 +01001624
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001625 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +01001626 /* remove all occurrences of the header */
1627 ctx.idx = 0;
1628 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
Willy Tarreauf37954d2018-06-15 18:31:02 +02001629 ci_head(txn->req.chn), &txn->hdr_idx, &ctx)) {
Willy Tarreau85603282015-01-21 20:39:27 +01001630 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
1631 }
1632 }
1633
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001634 if (http_header_add_tail2(&txn->req, &txn->hdr_idx, replace->area, replace->data) < 0) {
Tim Duesterhus3fd19732018-05-27 20:35:08 +02001635 static unsigned char rate_limit = 0;
1636
1637 if ((rate_limit++ & 255) == 0) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001638 replace->area[rule->arg.hdr_add.name_len] = 0;
1639 send_log(px, LOG_WARNING, "Proxy %s failed to add or set the request header '%s' for request #%u. You might need to increase tune.maxrewrite.", px->id,
1640 replace->area, s->uniq_id);
Tim Duesterhus3fd19732018-05-27 20:35:08 +02001641 }
1642
Olivier Houcharda798bf52019-03-08 18:52:00 +01001643 _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_rewrites, 1);
Tim Duesterhus3fd19732018-05-27 20:35:08 +02001644 if (sess->fe != s->be)
Olivier Houcharda798bf52019-03-08 18:52:00 +01001645 _HA_ATOMIC_ADD(&s->be->be_counters.failed_rewrites, 1);
Tim Duesterhus3fd19732018-05-27 20:35:08 +02001646 if (sess->listener->counters)
Olivier Houcharda798bf52019-03-08 18:52:00 +01001647 _HA_ATOMIC_ADD(&sess->listener->counters->failed_rewrites, 1);
Tim Duesterhus3fd19732018-05-27 20:35:08 +02001648 }
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001649
1650 free_trash_chunk(replace);
Willy Tarreau96257ec2012-12-27 10:46:37 +01001651 break;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001652 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001653
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001654 case ACT_HTTP_DEL_ACL:
1655 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001656 struct pat_ref *ref;
Willy Tarreau83061a82018-07-13 11:56:34 +02001657 struct buffer *key;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001658
1659 /* collect reference */
1660 ref = pat_ref_lookup(rule->arg.map.ref);
1661 if (!ref)
1662 continue;
1663
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001664 /* allocate key */
1665 key = alloc_trash_chunk();
Christopher Fauletea827bd2018-11-15 15:34:11 +01001666 if (!key) {
1667 rule_ret = HTTP_RULE_RES_BADREQ;
1668 goto end;
1669 }
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001670
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001671 /* collect key */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001672 key->data = build_logline(s, key->area, key->size,
1673 &rule->arg.map.key);
1674 key->area[key->data] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001675
1676 /* perform update */
1677 /* returned code: 1=ok, 0=ko */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001678 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001679 pat_ref_delete(ref, key->area);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001680 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001681
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001682 free_trash_chunk(key);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001683 break;
1684 }
1685
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001686 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001687 struct pat_ref *ref;
Willy Tarreau83061a82018-07-13 11:56:34 +02001688 struct buffer *key;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001689
1690 /* collect reference */
1691 ref = pat_ref_lookup(rule->arg.map.ref);
1692 if (!ref)
1693 continue;
1694
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001695 /* allocate key */
1696 key = alloc_trash_chunk();
Christopher Fauletea827bd2018-11-15 15:34:11 +01001697 if (!key) {
1698 rule_ret = HTTP_RULE_RES_BADREQ;
1699 goto end;
1700 }
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001701
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001702 /* collect key */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001703 key->data = build_logline(s, key->area, key->size,
1704 &rule->arg.map.key);
1705 key->area[key->data] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001706
1707 /* perform update */
1708 /* add entry only if it does not already exist */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001709 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001710 if (pat_ref_find_elt(ref, key->area) == NULL)
1711 pat_ref_add(ref, key->area, NULL, NULL);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001712 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001713
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001714 free_trash_chunk(key);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001715 break;
1716 }
1717
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001718 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001719 struct pat_ref *ref;
Willy Tarreau83061a82018-07-13 11:56:34 +02001720 struct buffer *key, *value;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001721
1722 /* collect reference */
1723 ref = pat_ref_lookup(rule->arg.map.ref);
1724 if (!ref)
1725 continue;
1726
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001727 /* allocate key */
1728 key = alloc_trash_chunk();
Christopher Fauletea827bd2018-11-15 15:34:11 +01001729 if (!key) {
1730 rule_ret = HTTP_RULE_RES_BADREQ;
1731 goto end;
1732 }
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001733
1734 /* allocate value */
1735 value = alloc_trash_chunk();
1736 if (!value) {
1737 free_trash_chunk(key);
Christopher Fauletea827bd2018-11-15 15:34:11 +01001738 rule_ret = HTTP_RULE_RES_BADREQ;
1739 goto end;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001740 }
1741
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001742 /* collect key */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001743 key->data = build_logline(s, key->area, key->size,
1744 &rule->arg.map.key);
1745 key->area[key->data] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001746
1747 /* collect value */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001748 value->data = build_logline(s, value->area,
1749 value->size,
1750 &rule->arg.map.value);
1751 value->area[value->data] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001752
1753 /* perform update */
Christopher Faulete84289e2019-04-19 14:50:55 +02001754 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001755 if (pat_ref_find_elt(ref, key->area) != NULL)
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001756 /* update entry if it exists */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001757 pat_ref_set(ref, key->area, value->area, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001758 else
1759 /* insert a new entry */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001760 pat_ref_add(ref, key->area, value->area, NULL);
Christopher Faulete84289e2019-04-19 14:50:55 +02001761 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001762
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001763 free_trash_chunk(key);
1764 free_trash_chunk(value);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02001765 break;
1766 }
William Lallemand73025dd2014-04-24 14:38:37 +02001767
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001768 case ACT_HTTP_EARLY_HINT:
1769 if (!(txn->req.flags & HTTP_MSGF_VER_11))
1770 break;
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001771 early_hints = http_apply_early_hint_rule(s, early_hints,
1772 rule->arg.early_hint.name,
1773 rule->arg.early_hint.name_len,
1774 &rule->arg.early_hint.fmt);
1775 if (!early_hints) {
Christopher Fauletea827bd2018-11-15 15:34:11 +01001776 rule_ret = HTTP_RULE_RES_DONE;
1777 goto end;
1778 }
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001779 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +02001780 case ACT_CUSTOM:
Willy Tarreau7aa15b02017-12-20 16:56:50 +01001781 if ((s->req.flags & CF_READ_ERROR) ||
1782 ((s->req.flags & (CF_SHUTR|CF_READ_NULL)) &&
Willy Tarreau7aa15b02017-12-20 16:56:50 +01001783 (px->options & PR_O_ABRT_CLOSE)))
Willy Tarreauacc98002015-09-27 23:34:39 +02001784 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +02001785
Willy Tarreauacc98002015-09-27 23:34:39 +02001786 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02001787 case ACT_RET_ERR:
1788 case ACT_RET_CONT:
1789 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +02001790 case ACT_RET_STOP:
Christopher Fauletea827bd2018-11-15 15:34:11 +01001791 rule_ret = HTTP_RULE_RES_DONE;
1792 goto end;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02001793 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +02001794 s->current_rule = rule;
Christopher Fauletea827bd2018-11-15 15:34:11 +01001795 rule_ret = HTTP_RULE_RES_YIELD;
1796 goto end;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01001797 }
William Lallemand73025dd2014-04-24 14:38:37 +02001798 break;
1799
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001800 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
Willy Tarreau09448f72014-06-25 18:12:15 +02001801 /* Note: only the first valid tracking parameter of each
1802 * applies.
1803 */
1804
Christopher Faulet4fce0d82017-09-18 11:57:31 +02001805 if (stkctr_entry(&s->stkctr[trk_idx(rule->action)]) == NULL) {
Willy Tarreau09448f72014-06-25 18:12:15 +02001806 struct stktable *t;
1807 struct stksess *ts;
1808 struct stktable_key *key;
Emeric Brun819fc6f2017-06-13 19:37:32 +02001809 void *ptr1, *ptr2;
Willy Tarreau09448f72014-06-25 18:12:15 +02001810
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +02001811 t = rule->arg.trk_ctr.table.t;
1812 key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_REQ | SMP_OPT_FINAL, rule->arg.trk_ctr.expr, NULL);
Willy Tarreau09448f72014-06-25 18:12:15 +02001813
1814 if (key && (ts = stktable_get_entry(t, key))) {
Christopher Faulet4fce0d82017-09-18 11:57:31 +02001815 stream_track_stkctr(&s->stkctr[trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +02001816
1817 /* let's count a new HTTP request as it's the first time we do it */
Emeric Brun819fc6f2017-06-13 19:37:32 +02001818 ptr1 = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
1819 ptr2 = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
1820 if (ptr1 || ptr2) {
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001821 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Willy Tarreau09448f72014-06-25 18:12:15 +02001822
Emeric Brun819fc6f2017-06-13 19:37:32 +02001823 if (ptr1)
1824 stktable_data_cast(ptr1, http_req_cnt)++;
1825
1826 if (ptr2)
1827 update_freq_ctr_period(&stktable_data_cast(ptr2, http_req_rate),
1828 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
1829
Christopher Faulet2a944ee2017-11-07 10:42:54 +01001830 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun0fed0b02017-11-29 16:15:07 +01001831
1832 /* If data was modified, we need to touch to re-schedule sync */
1833 stktable_touch_local(t, ts, 0);
Emeric Brun819fc6f2017-06-13 19:37:32 +02001834 }
Willy Tarreau09448f72014-06-25 18:12:15 +02001835
Christopher Faulet4fce0d82017-09-18 11:57:31 +02001836 stkctr_set_flags(&s->stkctr[trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +02001837 if (sess->fe != s->be)
Christopher Faulet4fce0d82017-09-18 11:57:31 +02001838 stkctr_set_flags(&s->stkctr[trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
Willy Tarreau09448f72014-06-25 18:12:15 +02001839 }
1840 }
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +02001841 break;
1842
Joseph Herlant5ba80252018-11-15 09:25:36 -08001843 /* other flags exists, but normally, they never be matched. */
Thierry FOURNIER22e49012015-08-05 19:13:48 +02001844 default:
1845 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +01001846 }
1847 }
Willy Tarreau96257ec2012-12-27 10:46:37 +01001848
Christopher Fauletea827bd2018-11-15 15:34:11 +01001849 end:
Christopher Faulet3c0544e2018-11-15 15:41:55 +01001850 if (early_hints) {
1851 http_send_early_hints(s, early_hints);
1852 free_trash_chunk(early_hints);
Frédéric Lécaille9ca51aa2018-11-12 10:06:54 +01001853 }
1854
Willy Tarreau96257ec2012-12-27 10:46:37 +01001855 /* we reached the end of the rules, nothing to report */
Christopher Fauletea827bd2018-11-15 15:34:11 +01001856 return rule_ret;
Willy Tarreauf68a15a2011-01-06 16:53:21 +01001857}
1858
Willy Tarreau71241ab2012-12-27 11:30:54 +01001859
Willy Tarreau51d861a2015-05-22 17:30:48 +02001860/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
1861 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
1862 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
1863 * is returned, the process can continue the evaluation of next rule list. If
1864 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
1865 * is returned, it means the operation could not be processed and a server error
1866 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
1867 * deny rule. If *YIELD is returned, the caller must call again the function
1868 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001869 */
Christopher Faulet10079f52018-10-03 15:17:28 +02001870enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +02001871http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001872{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +02001873 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +02001874 struct http_txn *txn = s->txn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +02001875 struct act_rule *rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001876 struct hdr_ctx ctx;
Christopher Faulet6c243eb2018-11-15 15:40:29 +01001877 enum rule_result rule_ret = HTTP_RULE_RES_CONT;
Willy Tarreauacc98002015-09-27 23:34:39 +02001878 int act_flags = 0;
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001879
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01001880 /* If "the current_rule_list" match the executed rule list, we are in
1881 * resume condition. If a resume is needed it is always in the action
1882 * and never in the ACL or converters. In this case, we initialise the
1883 * current rule, and go to the action execution point.
1884 */
Willy Tarreau152b81e2015-04-20 13:26:17 +02001885 if (s->current_rule) {
1886 rule = s->current_rule;
1887 s->current_rule = NULL;
1888 if (s->current_rule_list == rules)
1889 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01001890 }
1891 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +02001892
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001893 list_for_each_entry(rule, rules, list) {
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001894
1895 /* check optional condition */
1896 if (rule->cond) {
1897 int ret;
1898
Willy Tarreau192252e2015-04-04 01:47:55 +02001899 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001900 ret = acl_pass(ret);
1901
1902 if (rule->cond->pol == ACL_COND_UNLESS)
1903 ret = !ret;
1904
1905 if (!ret) /* condition not matched */
1906 continue;
1907 }
1908
Willy Tarreauacc98002015-09-27 23:34:39 +02001909 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01001910resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001911 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001912 case ACT_ACTION_ALLOW:
Christopher Faulet6c243eb2018-11-15 15:40:29 +01001913 rule_ret = HTTP_RULE_RES_STOP; /* "allow" rules are OK */
1914 goto end;
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001915
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001916 case ACT_ACTION_DENY:
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001917 txn->flags |= TX_SVDENY;
Christopher Faulet6c243eb2018-11-15 15:40:29 +01001918 rule_ret = HTTP_RULE_RES_STOP;
1919 goto end;
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001920
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001921 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +02001922 s->task->nice = rule->arg.nice;
1923 break;
1924
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001925 case ACT_HTTP_SET_TOS:
Willy Tarreau1a18b542018-12-11 16:37:42 +01001926 conn_set_tos(objt_conn(sess->origin), rule->arg.tos);
Willy Tarreau42cf39e2013-06-11 18:51:32 +02001927 break;
1928
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001929 case ACT_HTTP_SET_MARK:
Willy Tarreau1a18b542018-12-11 16:37:42 +01001930 conn_set_mark(objt_conn(sess->origin), rule->arg.mark);
Willy Tarreau51347ed2013-06-11 19:34:13 +02001931 break;
1932
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001933 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +02001934 s->logs.level = rule->arg.loglevel;
1935 break;
1936
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001937 case ACT_HTTP_REPLACE_HDR:
1938 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +01001939 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
1940 rule->arg.hdr_add.name_len,
1941 &rule->arg.hdr_add.fmt,
Dragan Dosen26743032019-04-30 15:54:36 +02001942 rule->arg.hdr_add.re, rule->action)) {
Christopher Faulet6c243eb2018-11-15 15:40:29 +01001943 rule_ret = HTTP_RULE_RES_BADREQ;
1944 goto end;
1945 }
Sasha Pachev218f0642014-06-16 12:05:59 -06001946 break;
1947
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001948 case ACT_HTTP_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001949 ctx.idx = 0;
1950 /* remove all occurrences of the header */
1951 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
Willy Tarreauf37954d2018-06-15 18:31:02 +02001952 ci_head(txn->rsp.chn), &txn->hdr_idx, &ctx)) {
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001953 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
1954 }
Willy Tarreau85603282015-01-21 20:39:27 +01001955 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +02001956
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001957 case ACT_HTTP_SET_HDR:
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001958 case ACT_HTTP_ADD_HDR: {
Willy Tarreau83061a82018-07-13 11:56:34 +02001959 struct buffer *replace;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001960
1961 replace = alloc_trash_chunk();
Christopher Faulet6c243eb2018-11-15 15:40:29 +01001962 if (!replace) {
1963 rule_ret = HTTP_RULE_RES_BADREQ;
1964 goto end;
1965 }
Dragan Dosen2ae327e2017-10-26 11:25:10 +02001966
1967 chunk_printf(replace, "%s: ", rule->arg.hdr_add.name);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001968 memcpy(replace->area, rule->arg.hdr_add.name,
1969 rule->arg.hdr_add.name_len);
1970 replace->data = rule->arg.hdr_add.name_len;
1971 replace->area[replace->data++] = ':';
1972 replace->area[replace->data++] = ' ';
1973 replace->data += build_logline(s,
1974 replace->area + replace->data,
1975 replace->size - replace->data,
1976 &rule->arg.hdr_add.fmt);
Willy Tarreau85603282015-01-21 20:39:27 +01001977
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02001978 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +01001979 /* remove all occurrences of the header */
1980 ctx.idx = 0;
1981 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
Willy Tarreauf37954d2018-06-15 18:31:02 +02001982 ci_head(txn->rsp.chn), &txn->hdr_idx, &ctx)) {
Willy Tarreau85603282015-01-21 20:39:27 +01001983 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
1984 }
1985 }
Tim Duesterhus3fd19732018-05-27 20:35:08 +02001986
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001987 if (http_header_add_tail2(&txn->rsp, &txn->hdr_idx, replace->area, replace->data) < 0) {
Tim Duesterhus3fd19732018-05-27 20:35:08 +02001988 static unsigned char rate_limit = 0;
1989
1990 if ((rate_limit++ & 255) == 0) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001991 replace->area[rule->arg.hdr_add.name_len] = 0;
1992 send_log(px, LOG_WARNING, "Proxy %s failed to add or set the response header '%s' for request #%u. You might need to increase tune.maxrewrite.", px->id,
1993 replace->area, s->uniq_id);
Tim Duesterhus3fd19732018-05-27 20:35:08 +02001994 }
1995
Olivier Houcharda798bf52019-03-08 18:52:00 +01001996 _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_rewrites, 1);
Tim Duesterhus3fd19732018-05-27 20:35:08 +02001997 if (sess->fe != s->be)
Olivier Houcharda798bf52019-03-08 18:52:00 +01001998 _HA_ATOMIC_ADD(&s->be->be_counters.failed_rewrites, 1);
Tim Duesterhus3fd19732018-05-27 20:35:08 +02001999 if (sess->listener->counters)
Olivier Houcharda798bf52019-03-08 18:52:00 +01002000 _HA_ATOMIC_ADD(&sess->listener->counters->failed_rewrites, 1);
Tim Duesterhus3fd19732018-05-27 20:35:08 +02002001 if (objt_server(s->target))
Olivier Houcharda798bf52019-03-08 18:52:00 +01002002 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_rewrites, 1);
Tim Duesterhus3fd19732018-05-27 20:35:08 +02002003 }
Dragan Dosen2ae327e2017-10-26 11:25:10 +02002004
2005 free_trash_chunk(replace);
Willy Tarreaue365c0b2013-06-11 16:06:12 +02002006 break;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02002007 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002008
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02002009 case ACT_HTTP_DEL_ACL:
2010 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002011 struct pat_ref *ref;
Willy Tarreau83061a82018-07-13 11:56:34 +02002012 struct buffer *key;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002013
2014 /* collect reference */
2015 ref = pat_ref_lookup(rule->arg.map.ref);
2016 if (!ref)
2017 continue;
2018
Dragan Dosen2ae327e2017-10-26 11:25:10 +02002019 /* allocate key */
2020 key = alloc_trash_chunk();
Christopher Faulet6c243eb2018-11-15 15:40:29 +01002021 if (!key) {
2022 rule_ret = HTTP_RULE_RES_BADREQ;
2023 goto end;
2024 }
Dragan Dosen2ae327e2017-10-26 11:25:10 +02002025
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002026 /* collect key */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002027 key->data = build_logline(s, key->area, key->size,
2028 &rule->arg.map.key);
2029 key->area[key->data] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002030
2031 /* perform update */
2032 /* returned code: 1=ok, 0=ko */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002033 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002034 pat_ref_delete(ref, key->area);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002035 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002036
Dragan Dosen2ae327e2017-10-26 11:25:10 +02002037 free_trash_chunk(key);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002038 break;
2039 }
2040
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02002041 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002042 struct pat_ref *ref;
Willy Tarreau83061a82018-07-13 11:56:34 +02002043 struct buffer *key;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002044
2045 /* collect reference */
2046 ref = pat_ref_lookup(rule->arg.map.ref);
2047 if (!ref)
2048 continue;
2049
Dragan Dosen2ae327e2017-10-26 11:25:10 +02002050 /* allocate key */
2051 key = alloc_trash_chunk();
Christopher Faulet6c243eb2018-11-15 15:40:29 +01002052 if (!key) {
2053 rule_ret = HTTP_RULE_RES_BADREQ;
2054 goto end;
2055 }
Dragan Dosen2ae327e2017-10-26 11:25:10 +02002056
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002057 /* collect key */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002058 key->data = build_logline(s, key->area, key->size,
2059 &rule->arg.map.key);
2060 key->area[key->data] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002061
2062 /* perform update */
2063 /* check if the entry already exists */
Christopher Faulete84289e2019-04-19 14:50:55 +02002064 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002065 if (pat_ref_find_elt(ref, key->area) == NULL)
2066 pat_ref_add(ref, key->area, NULL, NULL);
Christopher Faulete84289e2019-04-19 14:50:55 +02002067 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002068
Dragan Dosen2ae327e2017-10-26 11:25:10 +02002069 free_trash_chunk(key);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002070 break;
2071 }
2072
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02002073 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002074 struct pat_ref *ref;
Willy Tarreau83061a82018-07-13 11:56:34 +02002075 struct buffer *key, *value;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002076
2077 /* collect reference */
2078 ref = pat_ref_lookup(rule->arg.map.ref);
2079 if (!ref)
2080 continue;
2081
Dragan Dosen2ae327e2017-10-26 11:25:10 +02002082 /* allocate key */
2083 key = alloc_trash_chunk();
Christopher Faulet6c243eb2018-11-15 15:40:29 +01002084 if (!key) {
2085 rule_ret = HTTP_RULE_RES_BADREQ;
2086 goto end;
2087 }
Dragan Dosen2ae327e2017-10-26 11:25:10 +02002088
2089 /* allocate value */
2090 value = alloc_trash_chunk();
2091 if (!value) {
2092 free_trash_chunk(key);
Christopher Faulet6c243eb2018-11-15 15:40:29 +01002093 rule_ret = HTTP_RULE_RES_BADREQ;
2094 goto end;
Dragan Dosen2ae327e2017-10-26 11:25:10 +02002095 }
2096
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002097 /* collect key */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002098 key->data = build_logline(s, key->area, key->size,
2099 &rule->arg.map.key);
2100 key->area[key->data] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002101
2102 /* collect value */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002103 value->data = build_logline(s, value->area,
2104 value->size,
2105 &rule->arg.map.value);
2106 value->area[value->data] = '\0';
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002107
2108 /* perform update */
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002109 HA_SPIN_LOCK(PATREF_LOCK, &ref->lock);
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002110 if (pat_ref_find_elt(ref, key->area) != NULL)
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002111 /* update entry if it exists */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002112 pat_ref_set(ref, key->area, value->area, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002113 else
2114 /* insert a new entry */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002115 pat_ref_add(ref, key->area, value->area, NULL);
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002116 HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
Dragan Dosen2ae327e2017-10-26 11:25:10 +02002117 free_trash_chunk(key);
2118 free_trash_chunk(value);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +02002119 break;
2120 }
William Lallemand73025dd2014-04-24 14:38:37 +02002121
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +02002122 case ACT_HTTP_REDIR:
Christopher Faulet6c243eb2018-11-15 15:40:29 +01002123 rule_ret = HTTP_RULE_RES_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +02002124 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
Christopher Faulet6c243eb2018-11-15 15:40:29 +01002125 rule_ret = HTTP_RULE_RES_BADREQ;
2126 goto end;
Willy Tarreau51d861a2015-05-22 17:30:48 +02002127
Ruoshan Huange4edc6b2016-07-14 15:07:45 +08002128 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
2129 /* Note: only the first valid tracking parameter of each
2130 * applies.
2131 */
2132
Christopher Faulet4fce0d82017-09-18 11:57:31 +02002133 if (stkctr_entry(&s->stkctr[trk_idx(rule->action)]) == NULL) {
Ruoshan Huange4edc6b2016-07-14 15:07:45 +08002134 struct stktable *t;
2135 struct stksess *ts;
2136 struct stktable_key *key;
2137 void *ptr;
2138
2139 t = rule->arg.trk_ctr.table.t;
2140 key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_RES | SMP_OPT_FINAL, rule->arg.trk_ctr.expr, NULL);
2141
2142 if (key && (ts = stktable_get_entry(t, key))) {
Christopher Faulet4fce0d82017-09-18 11:57:31 +02002143 stream_track_stkctr(&s->stkctr[trk_idx(rule->action)], t, ts);
Ruoshan Huange4edc6b2016-07-14 15:07:45 +08002144
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002145 HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +02002146
Ruoshan Huange4edc6b2016-07-14 15:07:45 +08002147 /* let's count a new HTTP request as it's the first time we do it */
2148 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
2149 if (ptr)
2150 stktable_data_cast(ptr, http_req_cnt)++;
2151
2152 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
2153 if (ptr)
2154 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
2155 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
2156
Ruoshan Huange4edc6b2016-07-14 15:07:45 +08002157 /* When the client triggers a 4xx from the server, it's most often due
2158 * to a missing object or permission. These events should be tracked
2159 * because if they happen often, it may indicate a brute force or a
2160 * vulnerability scan. Normally this is done when receiving the response
2161 * but here we're tracking after this ought to have been done so we have
2162 * to do it on purpose.
2163 */
Willy Tarreau3146a4c2016-07-26 15:22:33 +02002164 if ((unsigned)(txn->status - 400) < 100) {
2165 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_CNT);
2166 if (ptr)
2167 stktable_data_cast(ptr, http_err_cnt)++;
2168
2169 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_RATE);
2170 if (ptr)
2171 update_freq_ctr_period(&stktable_data_cast(ptr, http_err_rate),
2172 t->data_arg[STKTABLE_DT_HTTP_ERR_RATE].u, 1);
2173 }
Emeric Brun819fc6f2017-06-13 19:37:32 +02002174
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002175 HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
Emeric Brun819fc6f2017-06-13 19:37:32 +02002176
Emeric Brun0fed0b02017-11-29 16:15:07 +01002177 /* If data was modified, we need to touch to re-schedule sync */
2178 stktable_touch_local(t, ts, 0);
2179
Emeric Brun819fc6f2017-06-13 19:37:32 +02002180 stkctr_set_flags(&s->stkctr[trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
2181 if (sess->fe != s->be)
2182 stkctr_set_flags(&s->stkctr[trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
2183
Ruoshan Huange4edc6b2016-07-14 15:07:45 +08002184 }
2185 }
2186 break;
2187
Thierry FOURNIER42148732015-09-02 17:17:33 +02002188 case ACT_CUSTOM:
Willy Tarreau7aa15b02017-12-20 16:56:50 +01002189 if ((s->req.flags & CF_READ_ERROR) ||
2190 ((s->req.flags & (CF_SHUTR|CF_READ_NULL)) &&
Willy Tarreau7aa15b02017-12-20 16:56:50 +01002191 (px->options & PR_O_ABRT_CLOSE)))
Willy Tarreauacc98002015-09-27 23:34:39 +02002192 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +02002193
Willy Tarreauacc98002015-09-27 23:34:39 +02002194 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02002195 case ACT_RET_ERR:
2196 case ACT_RET_CONT:
2197 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +02002198 case ACT_RET_STOP:
Christopher Faulet6c243eb2018-11-15 15:40:29 +01002199 rule_ret = HTTP_RULE_RES_STOP;
2200 goto end;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +02002201 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +02002202 s->current_rule = rule;
Christopher Faulet6c243eb2018-11-15 15:40:29 +01002203 rule_ret = HTTP_RULE_RES_YIELD;
2204 goto end;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01002205 }
William Lallemand73025dd2014-04-24 14:38:37 +02002206 break;
2207
Joseph Herlant5ba80252018-11-15 09:25:36 -08002208 /* other flags exists, but normally, they never be matched. */
Thierry FOURNIER22e49012015-08-05 19:13:48 +02002209 default:
2210 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +02002211 }
2212 }
2213
Christopher Faulet6c243eb2018-11-15 15:40:29 +01002214 end:
Willy Tarreaue365c0b2013-06-11 16:06:12 +02002215 /* we reached the end of the rules, nothing to report */
Christopher Faulet6c243eb2018-11-15 15:40:29 +01002216 return rule_ret;
Willy Tarreaue365c0b2013-06-11 16:06:12 +02002217}
2218
2219
Willy Tarreau71241ab2012-12-27 11:30:54 +01002220/* Perform an HTTP redirect based on the information in <rule>. The function
2221 * returns non-zero on success, or zero in case of a, irrecoverable error such
2222 * as too large a request to build a valid response.
2223 */
Christopher Faulet10079f52018-10-03 15:17:28 +02002224int http_apply_redirect_rule(struct redirect_rule *rule, struct stream *s, struct http_txn *txn)
Willy Tarreau71241ab2012-12-27 11:30:54 +01002225{
Willy Tarreaub329a312015-05-22 16:27:37 +02002226 struct http_msg *req = &txn->req;
2227 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002228 const char *msg_fmt;
Willy Tarreau83061a82018-07-13 11:56:34 +02002229 struct buffer *chunk;
Thierry FOURNIER0d945762017-01-28 07:39:53 +01002230 int ret = 0;
2231
Christopher Fauletf2824e62018-10-01 12:12:37 +02002232 if (IS_HTX_STRM(s))
2233 return htx_apply_redirect_rule(rule, s, txn);
2234
Thierry FOURNIER0d945762017-01-28 07:39:53 +01002235 chunk = alloc_trash_chunk();
2236 if (!chunk)
2237 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002238
2239 /* build redirect message */
2240 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -04002241 case 308:
2242 msg_fmt = HTTP_308;
2243 break;
2244 case 307:
2245 msg_fmt = HTTP_307;
2246 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002247 case 303:
2248 msg_fmt = HTTP_303;
2249 break;
2250 case 301:
2251 msg_fmt = HTTP_301;
2252 break;
2253 case 302:
2254 default:
2255 msg_fmt = HTTP_302;
2256 break;
2257 }
2258
Thierry FOURNIER0d945762017-01-28 07:39:53 +01002259 if (unlikely(!chunk_strcpy(chunk, msg_fmt)))
2260 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002261
2262 switch(rule->type) {
2263 case REDIRECT_TYPE_SCHEME: {
2264 const char *path;
2265 const char *host;
2266 struct hdr_ctx ctx;
2267 int pathlen;
2268 int hostlen;
2269
2270 host = "";
2271 hostlen = 0;
2272 ctx.idx = 0;
Willy Tarreauf37954d2018-06-15 18:31:02 +02002273 if (http_find_header2("Host", 4, ci_head(req->chn), &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +01002274 host = ctx.line + ctx.val;
2275 hostlen = ctx.vlen;
2276 }
2277
Willy Tarreau6b952c82018-09-10 17:45:34 +02002278 path = http_txn_get_path(txn);
Willy Tarreau71241ab2012-12-27 11:30:54 +01002279 /* build message using path */
2280 if (path) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02002281 pathlen = req->sl.rq.u_l + (ci_head(req->chn) + req->sl.rq.u) - path;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002282 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
2283 int qs = 0;
2284 while (qs < pathlen) {
2285 if (path[qs] == '?') {
2286 pathlen = qs;
2287 break;
2288 }
2289 qs++;
2290 }
2291 }
2292 } else {
2293 path = "/";
2294 pathlen = 1;
2295 }
2296
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002297 if (rule->rdr_str) { /* this is an old "redirect" rule */
2298 /* check if we can add scheme + "://" + host + path */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002299 if (chunk->data + rule->rdr_len + 3 + hostlen + pathlen > chunk->size - 4)
Thierry FOURNIER0d945762017-01-28 07:39:53 +01002300 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002301
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002302 /* add scheme */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002303 memcpy(chunk->area + chunk->data, rule->rdr_str,
2304 rule->rdr_len);
2305 chunk->data += rule->rdr_len;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002306 }
2307 else {
2308 /* add scheme with executing log format */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002309 chunk->data += build_logline(s,
2310 chunk->area + chunk->data,
2311 chunk->size - chunk->data,
2312 &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +01002313
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002314 /* check if we can add scheme + "://" + host + path */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002315 if (chunk->data + 3 + hostlen + pathlen > chunk->size - 4)
Thierry FOURNIER0d945762017-01-28 07:39:53 +01002316 goto leave;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002317 }
Willy Tarreau71241ab2012-12-27 11:30:54 +01002318 /* add "://" */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002319 memcpy(chunk->area + chunk->data, "://", 3);
2320 chunk->data += 3;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002321
2322 /* add host */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002323 memcpy(chunk->area + chunk->data, host, hostlen);
2324 chunk->data += hostlen;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002325
2326 /* add path */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002327 memcpy(chunk->area + chunk->data, path, pathlen);
2328 chunk->data += pathlen;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002329
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002330 /* append a slash at the end of the location if needed and missing */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002331 if (chunk->data && chunk->area[chunk->data - 1] != '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +01002332 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002333 if (chunk->data > chunk->size - 5)
Thierry FOURNIER0d945762017-01-28 07:39:53 +01002334 goto leave;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002335 chunk->area[chunk->data] = '/';
2336 chunk->data++;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002337 }
2338
2339 break;
2340 }
2341 case REDIRECT_TYPE_PREFIX: {
2342 const char *path;
2343 int pathlen;
2344
Willy Tarreau6b952c82018-09-10 17:45:34 +02002345 path = http_txn_get_path(txn);
Willy Tarreau71241ab2012-12-27 11:30:54 +01002346 /* build message using path */
2347 if (path) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02002348 pathlen = req->sl.rq.u_l + (ci_head(req->chn) + req->sl.rq.u) - path;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002349 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
2350 int qs = 0;
2351 while (qs < pathlen) {
2352 if (path[qs] == '?') {
2353 pathlen = qs;
2354 break;
2355 }
2356 qs++;
2357 }
2358 }
2359 } else {
2360 path = "/";
2361 pathlen = 1;
2362 }
2363
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002364 if (rule->rdr_str) { /* this is an old "redirect" rule */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002365 if (chunk->data + rule->rdr_len + pathlen > chunk->size - 4)
Thierry FOURNIER0d945762017-01-28 07:39:53 +01002366 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002367
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002368 /* add prefix. Note that if prefix == "/", we don't want to
2369 * add anything, otherwise it makes it hard for the user to
2370 * configure a self-redirection.
2371 */
2372 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002373 memcpy(chunk->area + chunk->data,
2374 rule->rdr_str, rule->rdr_len);
2375 chunk->data += rule->rdr_len;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002376 }
2377 }
2378 else {
2379 /* add prefix with executing log format */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002380 chunk->data += build_logline(s,
2381 chunk->area + chunk->data,
2382 chunk->size - chunk->data,
2383 &rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002384
2385 /* Check length */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002386 if (chunk->data + pathlen > chunk->size - 4)
Thierry FOURNIER0d945762017-01-28 07:39:53 +01002387 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002388 }
2389
2390 /* add path */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002391 memcpy(chunk->area + chunk->data, path, pathlen);
2392 chunk->data += pathlen;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002393
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002394 /* append a slash at the end of the location if needed and missing */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002395 if (chunk->data && chunk->area[chunk->data - 1] != '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +01002396 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002397 if (chunk->data > chunk->size - 5)
Thierry FOURNIER0d945762017-01-28 07:39:53 +01002398 goto leave;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002399 chunk->area[chunk->data] = '/';
2400 chunk->data++;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002401 }
2402
2403 break;
2404 }
2405 case REDIRECT_TYPE_LOCATION:
2406 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002407 if (rule->rdr_str) { /* this is an old "redirect" rule */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002408 if (chunk->data + rule->rdr_len > chunk->size - 4)
Thierry FOURNIER0d945762017-01-28 07:39:53 +01002409 goto leave;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002410
2411 /* add location */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002412 memcpy(chunk->area + chunk->data, rule->rdr_str,
2413 rule->rdr_len);
2414 chunk->data += rule->rdr_len;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002415 }
2416 else {
2417 /* add location with executing log format */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002418 chunk->data += build_logline(s,
2419 chunk->area + chunk->data,
2420 chunk->size - chunk->data,
2421 &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +01002422
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002423 /* Check left length */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002424 if (chunk->data > chunk->size - 4)
Thierry FOURNIER0d945762017-01-28 07:39:53 +01002425 goto leave;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002426 }
Willy Tarreau71241ab2012-12-27 11:30:54 +01002427 break;
2428 }
2429
2430 if (rule->cookie_len) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002431 memcpy(chunk->area + chunk->data, "\r\nSet-Cookie: ", 14);
2432 chunk->data += 14;
2433 memcpy(chunk->area + chunk->data, rule->cookie_str,
2434 rule->cookie_len);
2435 chunk->data += rule->cookie_len;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002436 }
2437
Willy Tarreau19b14122017-02-28 09:48:11 +01002438 /* add end of headers and the keep-alive/close status. */
Willy Tarreau71241ab2012-12-27 11:30:54 +01002439 txn->status = rule->code;
2440 /* let's log the request time */
2441 s->logs.tv_request = now;
2442
Christopher Fauletbe821b92017-03-30 11:21:53 +02002443 if (((!(req->flags & HTTP_MSGF_TE_CHNK) && !req->body_len) || (req->msg_state == HTTP_MSG_DONE)) &&
Willy Tarreau71241ab2012-12-27 11:30:54 +01002444 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
2445 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
2446 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +02002447 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +01002448 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002449 memcpy(chunk->area + chunk->data,
2450 "\r\nProxy-Connection: keep-alive", 30);
2451 chunk->data += 30;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002452 } else {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002453 memcpy(chunk->area + chunk->data,
2454 "\r\nConnection: keep-alive", 24);
2455 chunk->data += 24;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002456 }
2457 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002458 memcpy(chunk->area + chunk->data, "\r\n\r\n", 4);
2459 chunk->data += 4;
Thierry FOURNIER0d945762017-01-28 07:39:53 +01002460 FLT_STRM_CB(s, flt_http_reply(s, txn->status, chunk));
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002461 co_inject(res->chn, chunk->area, chunk->data);
Willy Tarreau71241ab2012-12-27 11:30:54 +01002462 /* "eat" the request */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002463 b_del(&req->chn->buf, req->sov);
Willy Tarreaub329a312015-05-22 16:27:37 +02002464 req->next -= req->sov;
2465 req->sov = 0;
Christopher Faulet0184ea72017-01-05 14:06:34 +01002466 s->req.analysers = AN_REQ_HTTP_XFER_BODY | (s->req.analysers & AN_REQ_FLT_END);
Christopher Faulet014e39c2017-03-10 13:52:30 +01002467 s->res.analysers = AN_RES_HTTP_XFER_BODY | (s->res.analysers & AN_RES_FLT_END);
Willy Tarreaub329a312015-05-22 16:27:37 +02002468 req->msg_state = HTTP_MSG_CLOSED;
2469 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +02002470 /* Trim any possible response */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002471 b_set_data(&res->chn->buf, co_data(res->chn));
Willy Tarreau51d861a2015-05-22 17:30:48 +02002472 res->next = res->sov = 0;
Christopher Faulet5d468ca2017-09-11 09:27:29 +02002473 /* let the server side turn to SI_ST_CLO */
2474 channel_shutw_now(req->chn);
Willy Tarreau71241ab2012-12-27 11:30:54 +01002475 } else {
2476 /* keep-alive not possible */
2477 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002478 memcpy(chunk->area + chunk->data,
2479 "\r\nProxy-Connection: close\r\n\r\n", 29);
2480 chunk->data += 29;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002481 } else {
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002482 memcpy(chunk->area + chunk->data,
2483 "\r\nConnection: close\r\n\r\n", 23);
2484 chunk->data += 23;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002485 }
Thierry FOURNIER0d945762017-01-28 07:39:53 +01002486 http_reply_and_close(s, txn->status, chunk);
Christopher Faulet0184ea72017-01-05 14:06:34 +01002487 req->chn->analysers &= AN_REQ_FLT_END;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002488 }
2489
Willy Tarreaue7dff022015-04-03 01:14:29 +02002490 if (!(s->flags & SF_ERR_MASK))
2491 s->flags |= SF_ERR_LOCAL;
2492 if (!(s->flags & SF_FINST_MASK))
2493 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002494
Thierry FOURNIER0d945762017-01-28 07:39:53 +01002495 ret = 1;
2496 leave:
2497 free_trash_chunk(chunk);
2498 return ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002499}
2500
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002501/* This stream analyser runs all HTTP request processing which is common to
2502 * frontends and backends, which means blocking ACLs, filters, connection-close,
2503 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +02002504 * It returns 1 if the processing can continue on next analysers, or zero if it
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002505 * either needs more data or wants to immediately abort the request (eg: deny,
2506 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +02002507 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002508int http_process_req_common(struct stream *s, struct channel *req, int an_bit, struct proxy *px)
Willy Tarreaud787e662009-07-07 10:14:51 +02002509{
Willy Tarreaufb0afa72015-04-03 14:46:27 +02002510 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +02002511 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +02002512 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002513 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +01002514 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +02002515 enum rule_result verdict;
Willy Tarreau58727ec2016-05-25 16:23:59 +02002516 int deny_status = HTTP_ERR_403;
Olivier Houchardc2aae742017-09-22 18:26:28 +02002517 struct connection *conn = objt_conn(sess->origin);
Willy Tarreaud787e662009-07-07 10:14:51 +02002518
Christopher Faulete0768eb2018-10-03 16:38:02 +02002519 if (IS_HTX_STRM(s))
2520 return htx_process_req_common(s, req, an_bit, px);
2521
Willy Tarreau655dce92009-11-08 13:10:58 +01002522 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +02002523 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01002524 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +02002525 }
2526
Christopher Faulet45073512018-07-20 10:16:29 +02002527 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Willy Tarreaud787e662009-07-07 10:14:51 +02002528 now_ms, __FUNCTION__,
2529 s,
2530 req,
2531 req->rex, req->wex,
2532 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02002533 ci_data(req),
Willy Tarreaud787e662009-07-07 10:14:51 +02002534 req->analysers);
2535
Christopher Faulet1907ccc2019-04-29 13:12:02 +02002536 /* just in case we have some per-backend tracking. Only called the first
2537 * execution of the analyser. */
2538 if (!s->current_rule || s->current_rule_list != &px->http_req_rules)
2539 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +02002540
Willy Tarreauf68a15a2011-01-06 16:53:21 +01002541 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +02002542 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau58727ec2016-05-25 16:23:59 +02002543 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, &deny_status);
Willy Tarreau51425942010-02-01 10:40:19 +01002544
Willy Tarreau0b748332014-04-29 00:13:29 +02002545 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01002546 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
2547 goto return_prx_yield;
2548
Willy Tarreau0b748332014-04-29 00:13:29 +02002549 case HTTP_RULE_RES_CONT:
2550 case HTTP_RULE_RES_STOP: /* nothing to do */
2551 break;
Willy Tarreau52542592014-04-28 18:33:26 +02002552
Willy Tarreau0b748332014-04-29 00:13:29 +02002553 case HTTP_RULE_RES_DENY: /* deny or tarpit */
2554 if (txn->flags & TX_CLTARPIT)
2555 goto tarpit;
2556 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +02002557
Willy Tarreau0b748332014-04-29 00:13:29 +02002558 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
2559 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +02002560
Willy Tarreau0b748332014-04-29 00:13:29 +02002561 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +02002562 goto done;
2563
Willy Tarreau0b748332014-04-29 00:13:29 +02002564 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
2565 goto return_bad_req;
2566 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002567 }
2568
Olivier Houchard25ae45a2017-11-29 19:51:19 +01002569 if (conn && (conn->flags & CO_FL_EARLY_DATA) &&
2570 (conn->flags & (CO_FL_EARLY_SSL_HS | CO_FL_HANDSHAKE))) {
Olivier Houchardc2aae742017-09-22 18:26:28 +02002571 struct hdr_ctx ctx;
2572
2573 ctx.idx = 0;
2574 if (!http_find_header2("Early-Data", strlen("Early-Data"),
Willy Tarreauf37954d2018-06-15 18:31:02 +02002575 ci_head(&s->req), &txn->hdr_idx, &ctx)) {
Olivier Houchardc2aae742017-09-22 18:26:28 +02002576 if (unlikely(http_header_add_tail2(&txn->req,
2577 &txn->hdr_idx, "Early-Data: 1",
Christopher Faulet005e79e2018-07-20 09:54:26 +02002578 strlen("Early-Data: 1")) < 0)) {
Olivier Houchardc2aae742017-09-22 18:26:28 +02002579 goto return_bad_req;
2580 }
2581 }
2582
2583 }
2584
Willy Tarreau52542592014-04-28 18:33:26 +02002585 /* OK at this stage, we know that the request was accepted according to
2586 * the http-request rules, we can check for the stats. Note that the
2587 * URI is detected *before* the req* rules in order not to be affected
2588 * by a possible reqrep, while they are processed *after* so that a
2589 * reqdeny can still block them. This clearly needs to change in 1.6!
2590 */
Willy Tarreau350f4872014-11-28 14:42:25 +01002591 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +02002592 s->target = &http_stats_applet.obj_type;
Willy Tarreau14bfe9a2018-12-19 15:19:27 +01002593 if (unlikely(!si_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +02002594 txn->status = 500;
2595 s->logs.tv_request = now;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02002596 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau7b4b4992013-12-01 09:15:12 +01002597
Willy Tarreaue7dff022015-04-03 01:14:29 +02002598 if (!(s->flags & SF_ERR_MASK))
2599 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +02002600 goto return_prx_cond;
2601 }
2602
2603 /* parse the whole stats request and extract the relevant information */
2604 http_handle_stats(s, req);
Willy Tarreau58727ec2016-05-25 16:23:59 +02002605 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, &deny_status);
Willy Tarreau0b748332014-04-29 00:13:29 +02002606 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002607
Willy Tarreau0b748332014-04-29 00:13:29 +02002608 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
2609 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +02002610
Willy Tarreau0b748332014-04-29 00:13:29 +02002611 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
2612 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002613 }
2614
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002615 /* evaluate the req* rules except reqadd */
2616 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +01002617 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002618 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +01002619
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002620 if (txn->flags & TX_CLDENY)
2621 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +02002622
Jarno Huuskonen800d1762017-03-06 14:56:36 +02002623 if (txn->flags & TX_CLTARPIT) {
2624 deny_status = HTTP_ERR_500;
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002625 goto tarpit;
Jarno Huuskonen800d1762017-03-06 14:56:36 +02002626 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002627 }
Willy Tarreau06619262006-12-17 08:37:22 +01002628
Willy Tarreauf68a15a2011-01-06 16:53:21 +01002629 /* add request headers from the rule sets in the same order */
2630 list_for_each_entry(wl, &px->req_add, list) {
2631 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02002632 int ret = acl_exec_cond(wl->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf68a15a2011-01-06 16:53:21 +01002633 ret = acl_pass(ret);
2634 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
2635 ret = !ret;
2636 if (!ret)
2637 continue;
2638 }
2639
Christopher Faulet10079f52018-10-03 15:17:28 +02002640 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, wl->s, strlen(wl->s)) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +01002641 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +01002642 }
2643
Willy Tarreau52542592014-04-28 18:33:26 +02002644
2645 /* Proceed with the stats now. */
Christopher Faulet2571bc62019-03-01 11:44:26 +01002646 if (unlikely(objt_applet(s->target))) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +01002647 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002648 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
Olivier Houcharda798bf52019-03-08 18:52:00 +01002649 _HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1);
Willy Tarreau347a35d2013-11-22 17:51:09 +01002650
Christopher Fauletbcf242a2019-03-01 11:36:26 +01002651 http_handle_expect_hdr(s, req, msg);
2652
Willy Tarreaue7dff022015-04-03 01:14:29 +02002653 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
2654 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
2655 if (!(s->flags & SF_FINST_MASK))
2656 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +01002657
Willy Tarreau70730dd2014-04-24 18:06:27 +02002658 /* enable the minimally required analyzers to handle keep-alive and compression on the HTTP response */
Christopher Faulet0184ea72017-01-05 14:06:34 +01002659 req->analysers &= (AN_REQ_HTTP_BODY | AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END);
2660 req->analysers &= ~AN_REQ_FLT_XFER_DATA;
Christopher Fauletd7c91962015-04-30 11:48:27 +02002661 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Christopher Fauletbcf242a2019-03-01 11:36:26 +01002662
2663 req->flags |= CF_SEND_DONTWAIT;
2664 s->flags |= SF_ASSIGNED;
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002665 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002666 }
Willy Tarreaub2513902006-12-17 14:52:38 +01002667
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002668 /* check whether we have some ACLs set to redirect this request */
2669 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +01002670 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +01002671 int ret;
2672
Willy Tarreau192252e2015-04-04 01:47:55 +02002673 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf285f542010-01-03 20:03:03 +01002674 ret = acl_pass(ret);
2675 if (rule->cond->pol == ACL_COND_UNLESS)
2676 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +01002677 if (!ret)
2678 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +01002679 }
Willy Tarreau71241ab2012-12-27 11:30:54 +01002680 if (!http_apply_redirect_rule(rule, s, txn))
2681 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002682 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002683 }
Willy Tarreau55ea7572007-06-17 19:56:27 +02002684
Willy Tarreau2be39392010-01-03 17:24:51 +01002685 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
2686 * If this happens, then the data will not come immediately, so we must
2687 * send all what we have without waiting. Note that due to the small gain
2688 * in waiting for the body of the request, it's easier to simply put the
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002689 * CF_SEND_DONTWAIT flag any time. It's a one-shot flag so it will remove
Willy Tarreau2be39392010-01-03 17:24:51 +01002690 * itself once used.
2691 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02002692 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +01002693
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002694 done: /* done with this analyser, continue with next ones that the calling
2695 * points will have set, if any.
2696 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002697 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +02002698 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
2699 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002700 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +02002701
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002702 tarpit:
Willy Tarreau6a0bca92017-06-11 17:56:27 +02002703 /* Allow cookie logging
2704 */
2705 if (s->be->cookie_name || sess->fe->capture_name)
2706 manage_client_side_cookies(s, req);
2707
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002708 /* When a connection is tarpitted, we use the tarpit timeout,
2709 * which may be the same as the connect timeout if unspecified.
2710 * If unset, then set it to zero because we really want it to
2711 * eventually expire. We build the tarpit as an analyser.
2712 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01002713 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002714
2715 /* wipe the request out so that we can drop the connection early
2716 * if the client closes first.
2717 */
2718 channel_dont_connect(req);
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +02002719
Jarno Huuskonen800d1762017-03-06 14:56:36 +02002720 txn->status = http_err_codes[deny_status];
2721
Christopher Faulet0184ea72017-01-05 14:06:34 +01002722 req->analysers &= AN_REQ_FLT_END; /* remove switching rules etc... */
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002723 req->analysers |= AN_REQ_HTTP_TARPIT;
2724 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
2725 if (!req->analyse_exp)
2726 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +02002727 stream_inc_http_err_ctr(s);
Olivier Houcharda798bf52019-03-08 18:52:00 +01002728 _HA_ATOMIC_ADD(&sess->fe->fe_counters.denied_req, 1);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002729 if (sess->fe != s->be)
Olivier Houcharda798bf52019-03-08 18:52:00 +01002730 _HA_ATOMIC_ADD(&s->be->be_counters.denied_req, 1);
Willy Tarreaufb0afa72015-04-03 14:46:27 +02002731 if (sess->listener->counters)
Olivier Houcharda798bf52019-03-08 18:52:00 +01002732 _HA_ATOMIC_ADD(&sess->listener->counters->denied_req, 1);
Thierry FOURNIER7566e302014-08-22 06:55:26 +02002733 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002734
2735 deny: /* this request was blocked (denied) */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +02002736
2737 /* Allow cookie logging
2738 */
2739 if (s->be->cookie_name || sess->fe->capture_name)
2740 manage_client_side_cookies(s, req);
2741
Willy Tarreau0b748332014-04-29 00:13:29 +02002742 txn->flags |= TX_CLDENY;
Willy Tarreau58727ec2016-05-25 16:23:59 +02002743 txn->status = http_err_codes[deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002744 s->logs.tv_request = now;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02002745 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau87b09662015-04-03 00:22:06 +02002746 stream_inc_http_err_ctr(s);
Olivier Houcharda798bf52019-03-08 18:52:00 +01002747 _HA_ATOMIC_ADD(&sess->fe->fe_counters.denied_req, 1);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002748 if (sess->fe != s->be)
Olivier Houcharda798bf52019-03-08 18:52:00 +01002749 _HA_ATOMIC_ADD(&s->be->be_counters.denied_req, 1);
Willy Tarreaufb0afa72015-04-03 14:46:27 +02002750 if (sess->listener->counters)
Olivier Houcharda798bf52019-03-08 18:52:00 +01002751 _HA_ATOMIC_ADD(&sess->listener->counters->denied_req, 1);
Willy Tarreaubbba2a82014-04-28 13:57:26 +02002752 goto return_prx_cond;
2753
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002754 return_bad_req:
2755 /* We centralize bad requests processing here */
2756 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2757 /* we detected a parsing error. We want to archive this request
2758 * in the dedicated proxy area for later troubleshooting.
2759 */
Willy Tarreaufd9419d2018-09-07 18:01:03 +02002760 http_capture_bad_message(sess->fe, s, msg, msg->err_state, sess->fe);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002761 }
Willy Tarreau55ea7572007-06-17 19:56:27 +02002762
Willy Tarreau10e61cb2017-01-04 14:51:22 +01002763 txn->req.err_state = txn->req.msg_state;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002764 txn->req.msg_state = HTTP_MSG_ERROR;
2765 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02002766 http_reply_and_close(s, txn->status, http_error_message(s));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +02002767
Olivier Houcharda798bf52019-03-08 18:52:00 +01002768 _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1);
Willy Tarreaufb0afa72015-04-03 14:46:27 +02002769 if (sess->listener->counters)
Olivier Houcharda798bf52019-03-08 18:52:00 +01002770 _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1);
Willy Tarreau6e4261e2007-09-18 18:36:05 +02002771
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002772 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +02002773 if (!(s->flags & SF_ERR_MASK))
2774 s->flags |= SF_ERR_PRXCOND;
2775 if (!(s->flags & SF_FINST_MASK))
2776 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +01002777
Christopher Faulet0184ea72017-01-05 14:06:34 +01002778 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002779 req->analyse_exp = TICK_ETERNITY;
2780 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01002781
2782 return_prx_yield:
2783 channel_dont_connect(req);
2784 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002785}
Willy Tarreau58f10d72006-12-04 02:26:12 +01002786
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002787/* This function performs all the processing enabled for the current request.
2788 * It returns 1 if the processing can continue on next analysers, or zero if it
2789 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01002790 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002791 */
Willy Tarreau87b09662015-04-03 00:22:06 +02002792int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002793{
Willy Tarreaufb0afa72015-04-03 14:46:27 +02002794 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +02002795 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002796 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +02002797 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +01002798
Christopher Faulete0768eb2018-10-03 16:38:02 +02002799 if (IS_HTX_STRM(s))
2800 return htx_process_request(s, req, an_bit);
2801
Willy Tarreau655dce92009-11-08 13:10:58 +01002802 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +02002803 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002804 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +02002805 return 0;
2806 }
2807
Christopher Faulet45073512018-07-20 10:16:29 +02002808 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002809 now_ms, __FUNCTION__,
2810 s,
2811 req,
2812 req->rex, req->wex,
2813 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02002814 ci_data(req),
Willy Tarreau1d0dfb12009-07-07 15:10:31 +02002815 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +01002816
Willy Tarreau59234e92008-11-30 23:51:27 +01002817 /*
2818 * Right now, we know that we have processed the entire headers
2819 * and that unwanted requests have been filtered out. We can do
2820 * whatever we want with the remaining request. Also, now we
2821 * may have separate values for ->fe, ->be.
2822 */
Willy Tarreau06619262006-12-17 08:37:22 +01002823
Willy Tarreau59234e92008-11-30 23:51:27 +01002824 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +02002825 * If HTTP PROXY is set we simply get remote server address parsing
2826 * incoming request. Note that this requires that a connection is
2827 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +01002828 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02002829 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +02002830 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +01002831 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +02002832
Willy Tarreau9471b8c2013-12-15 13:31:35 +01002833 /* Note that for now we don't reuse existing proxy connections */
Olivier Houchard9aaf7782017-09-13 18:30:23 +02002834 if (unlikely((conn = cs_conn(si_alloc_cs(&s->si[1], NULL))) == NULL)) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +01002835 txn->req.err_state = txn->req.msg_state;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +02002836 txn->req.msg_state = HTTP_MSG_ERROR;
2837 txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +01002838 req->analysers &= AN_REQ_FLT_END;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02002839 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +02002840
Willy Tarreaue7dff022015-04-03 01:14:29 +02002841 if (!(s->flags & SF_ERR_MASK))
2842 s->flags |= SF_ERR_RESOURCE;
2843 if (!(s->flags & SF_FINST_MASK))
2844 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +02002845
2846 return 0;
2847 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +01002848
Willy Tarreau6b952c82018-09-10 17:45:34 +02002849 path = http_txn_get_path(txn);
Willy Tarreauf37954d2018-06-15 18:31:02 +02002850 if (url2sa(ci_head(req) + msg->sl.rq.u,
2851 path ? path - (ci_head(req) + msg->sl.rq.u) : msg->sl.rq.u_l,
Christopher Faulet11ebb202018-04-13 15:53:12 +02002852 &conn->addr.to, NULL) == -1)
2853 goto return_bad_req;
2854
Willy Tarreaue8df1e12013-12-16 14:30:55 +01002855 /* if the path was found, we have to remove everything between
Willy Tarreauf37954d2018-06-15 18:31:02 +02002856 * ci_head(req) + msg->sl.rq.u and path (excluded). If it was not
2857 * found, we need to replace from ci_head(req) + msg->sl.rq.u for
Willy Tarreaue8df1e12013-12-16 14:30:55 +01002858 * u_l characters by a single "/".
2859 */
2860 if (path) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02002861 char *cur_ptr = ci_head(req);
Willy Tarreaue8df1e12013-12-16 14:30:55 +01002862 char *cur_end = cur_ptr + txn->req.sl.rq.l;
2863 int delta;
2864
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002865 delta = b_rep_blk(&req->buf, cur_ptr + msg->sl.rq.u, path, NULL, 0);
Willy Tarreaue8df1e12013-12-16 14:30:55 +01002866 http_msg_move_end(&txn->req, delta);
2867 cur_end += delta;
2868 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
2869 goto return_bad_req;
2870 }
2871 else {
Willy Tarreauf37954d2018-06-15 18:31:02 +02002872 char *cur_ptr = ci_head(req);
Willy Tarreaue8df1e12013-12-16 14:30:55 +01002873 char *cur_end = cur_ptr + txn->req.sl.rq.l;
2874 int delta;
2875
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002876 delta = b_rep_blk(&req->buf, cur_ptr + msg->sl.rq.u,
Willy Tarreauf37954d2018-06-15 18:31:02 +02002877 cur_ptr + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
Willy Tarreaue8df1e12013-12-16 14:30:55 +01002878 http_msg_move_end(&txn->req, delta);
2879 cur_end += delta;
2880 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
2881 goto return_bad_req;
2882 }
Willy Tarreau59234e92008-11-30 23:51:27 +01002883 }
Willy Tarreau58f10d72006-12-04 02:26:12 +01002884
Willy Tarreau59234e92008-11-30 23:51:27 +01002885 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +01002886 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +01002887 * Note that doing so might move headers in the request, but
2888 * the fields will stay coherent and the URI will not move.
2889 * This should only be performed in the backend.
2890 */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +02002891 if (s->be->cookie_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +01002892 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +02002893
William Lallemanda73203e2012-03-12 12:48:57 +01002894 /* add unique-id if "header-unique-id" is specified */
2895
Thierry Fournierf4011dd2016-03-29 17:23:51 +02002896 if (!LIST_ISEMPTY(&sess->fe->format_unique_id) && !s->unique_id) {
Willy Tarreaubafbe012017-11-24 17:34:44 +01002897 if ((s->unique_id = pool_alloc(pool_head_uniqueid)) == NULL)
William Lallemand5b7ea3a2013-08-28 15:44:19 +02002898 goto return_bad_req;
2899 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002900 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +02002901 }
William Lallemanda73203e2012-03-12 12:48:57 +01002902
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002903 if (sess->fe->header_unique_id && s->unique_id) {
Willy Tarreau5f6333c2018-08-22 05:14:37 +02002904 if (chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id) < 0)
William Lallemanda73203e2012-03-12 12:48:57 +01002905 goto return_bad_req;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002906 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.area, trash.data) < 0))
William Lallemanda73203e2012-03-12 12:48:57 +01002907 goto return_bad_req;
2908 }
2909
Cyril Bontéb21570a2009-11-29 20:04:48 +01002910 /*
Willy Tarreau59234e92008-11-30 23:51:27 +01002911 * 9: add X-Forwarded-For if either the frontend or the backend
2912 * asks for it.
2913 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002914 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +02002915 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002916 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
2917 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
2918 s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_len : sess->fe->fwdfor_hdr_len,
Willy Tarreauf37954d2018-06-15 18:31:02 +02002919 ci_head(req), &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +02002920 /* The header is set to be added only if none is present
2921 * and we found it, so don't do anything.
2922 */
2923 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +02002924 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +01002925 /* Add an X-Forwarded-For header unless the source IP is
2926 * in the 'except' network range.
2927 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002928 if ((!sess->fe->except_mask.s_addr ||
2929 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
2930 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +01002931 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +02002932 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & s->be->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +01002933 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +01002934 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +01002935 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +02002936 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +02002937
2938 /* Note: we rely on the backend to get the header name to be used for
2939 * x-forwarded-for, because the header is really meant for the backends.
2940 * However, if the backend did not specify any option, we have to rely
2941 * on the frontend's header name.
2942 */
Willy Tarreau59234e92008-11-30 23:51:27 +01002943 if (s->be->fwdfor_hdr_len) {
2944 len = s->be->fwdfor_hdr_len;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002945 memcpy(trash.area,
2946 s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +02002947 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002948 len = sess->fe->fwdfor_hdr_len;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002949 memcpy(trash.area,
2950 sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +01002951 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002952 len += snprintf(trash.area + len,
2953 trash.size - len,
2954 ": %d.%d.%d.%d", pn[0], pn[1],
2955 pn[2], pn[3]);
Willy Tarreauedcf6682008-11-30 23:15:34 +01002956
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002957 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.area, len) < 0))
Willy Tarreau06619262006-12-17 08:37:22 +01002958 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +01002959 }
2960 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +02002961 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +01002962 /* FIXME: for the sake of completeness, we should also support
2963 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +02002964 */
Willy Tarreau59234e92008-11-30 23:51:27 +01002965 int len;
2966 char pn[INET6_ADDRSTRLEN];
2967 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +02002968 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +01002969 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +02002970
Willy Tarreau59234e92008-11-30 23:51:27 +01002971 /* Note: we rely on the backend to get the header name to be used for
2972 * x-forwarded-for, because the header is really meant for the backends.
2973 * However, if the backend did not specify any option, we have to rely
2974 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +02002975 */
Willy Tarreau59234e92008-11-30 23:51:27 +01002976 if (s->be->fwdfor_hdr_len) {
2977 len = s->be->fwdfor_hdr_len;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002978 memcpy(trash.area, s->be->fwdfor_hdr_name,
2979 len);
Willy Tarreau59234e92008-11-30 23:51:27 +01002980 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002981 len = sess->fe->fwdfor_hdr_len;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002982 memcpy(trash.area, sess->fe->fwdfor_hdr_name,
2983 len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +02002984 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002985 len += snprintf(trash.area + len, trash.size - len,
2986 ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +02002987
Willy Tarreau843b7cb2018-07-13 10:54:26 +02002988 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.area, len) < 0))
Willy Tarreau59234e92008-11-30 23:51:27 +01002989 goto return_bad_req;
2990 }
2991 }
2992
2993 /*
Maik Broemme2850cb42009-04-17 18:53:21 +02002994 * 10: add X-Original-To if either the frontend or the backend
2995 * asks for it.
2996 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02002997 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +02002998
2999 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +02003000 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +02003001 /* Add an X-Original-To header unless the destination IP is
3002 * in the 'except' network range.
3003 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +02003004 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +02003005
Willy Tarreaub363a1f2013-10-01 10:45:07 +02003006 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02003007 ((!sess->fe->except_mask_to.s_addr ||
3008 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
3009 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +02003010 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +02003011 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +02003012 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +02003013 int len;
3014 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +02003015 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +02003016
3017 /* Note: we rely on the backend to get the header name to be used for
3018 * x-original-to, because the header is really meant for the backends.
3019 * However, if the backend did not specify any option, we have to rely
3020 * on the frontend's header name.
3021 */
3022 if (s->be->orgto_hdr_len) {
3023 len = s->be->orgto_hdr_len;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003024 memcpy(trash.area,
3025 s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +02003026 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02003027 len = sess->fe->orgto_hdr_len;
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003028 memcpy(trash.area,
3029 sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +01003030 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003031 len += snprintf(trash.area + len,
3032 trash.size - len,
3033 ": %d.%d.%d.%d", pn[0], pn[1],
3034 pn[2], pn[3]);
Maik Broemme2850cb42009-04-17 18:53:21 +02003035
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003036 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.area, len) < 0))
Maik Broemme2850cb42009-04-17 18:53:21 +02003037 goto return_bad_req;
3038 }
3039 }
3040 }
3041
Willy Tarreau50fc7772012-11-11 22:19:57 +01003042 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3043 * If an "Upgrade" token is found, the header is left untouched in order not to have
3044 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3045 * "Upgrade" is present in the Connection header.
3046 */
Christopher Faulet315b39c2018-09-21 16:26:19 +02003047 if (!(txn->flags & TX_HDR_CONN_UPG) && (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +01003048 unsigned int want_flags = 0;
3049
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01003050 if (msg->flags & HTTP_MSGF_VER_11) {
Christopher Faulet315b39c2018-09-21 16:26:19 +02003051 if ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02003052 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +01003053 want_flags |= TX_CON_CLO_SET;
3054 } else {
Christopher Faulet315b39c2018-09-21 16:26:19 +02003055 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02003056 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +01003057 want_flags |= TX_CON_KAL_SET;
3058 }
3059
3060 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +01003061 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +01003062 }
Willy Tarreau522d6c02009-12-06 18:49:18 +01003063
Willy Tarreaubbf0b372010-01-18 16:54:40 +01003064
Willy Tarreau522d6c02009-12-06 18:49:18 +01003065 /* If we have no server assigned yet and we're balancing on url_param
3066 * with a POST request, we may be interested in checking the body for
3067 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +01003068 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02003069 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreau089eaa02019-01-14 15:17:46 +01003070 s->txn->meth == HTTP_METH_POST &&
3071 (s->be->lbprm.algo & BE_LB_ALGO) == BE_LB_ALGO_PH &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01003072 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +02003073 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +01003074 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +01003075 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003076
Christopher Fauletbe821b92017-03-30 11:21:53 +02003077 req->analysers &= ~AN_REQ_FLT_XFER_DATA;
3078 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau1a18b542018-12-11 16:37:42 +01003079
Christopher Fauletbe821b92017-03-30 11:21:53 +02003080 /* We expect some data from the client. Unless we know for sure
3081 * we already have a full request, we have to re-enable quick-ack
3082 * in case we previously disabled it, otherwise we might cause
3083 * the client to delay further data.
3084 */
3085 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Christopher Fauletbe821b92017-03-30 11:21:53 +02003086 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreauf37954d2018-06-15 18:31:02 +02003087 (msg->body_len > ci_data(req) - txn->req.eoh - 2)))
Willy Tarreau1a18b542018-12-11 16:37:42 +01003088 conn_set_quickack(cli_conn, 1);
Willy Tarreau03945942009-12-22 16:50:27 +01003089
Willy Tarreau59234e92008-11-30 23:51:27 +01003090 /*************************************************************
3091 * OK, that's finished for the headers. We have done what we *
3092 * could. Let's switch to the DATA state. *
3093 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +01003094 req->analyse_exp = TICK_ETERNITY;
3095 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003096
Willy Tarreau59234e92008-11-30 23:51:27 +01003097 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +01003098 /* OK let's go on with the BODY now */
3099 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +01003100
Willy Tarreau59234e92008-11-30 23:51:27 +01003101 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +02003102 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +01003103 /* we detected a parsing error. We want to archive this request
3104 * in the dedicated proxy area for later troubleshooting.
3105 */
Willy Tarreaufd9419d2018-09-07 18:01:03 +02003106 http_capture_bad_message(sess->fe, s, msg, msg->err_state, sess->fe);
Willy Tarreauf073a832009-03-01 23:21:47 +01003107 }
Willy Tarreau4076a152009-04-02 15:18:36 +02003108
Willy Tarreau10e61cb2017-01-04 14:51:22 +01003109 txn->req.err_state = txn->req.msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +01003110 txn->req.msg_state = HTTP_MSG_ERROR;
3111 txn->status = 400;
Christopher Faulet0184ea72017-01-05 14:06:34 +01003112 req->analysers &= AN_REQ_FLT_END;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02003113 http_reply_and_close(s, txn->status, http_error_message(s));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +02003114
Olivier Houcharda798bf52019-03-08 18:52:00 +01003115 _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1);
Willy Tarreaufb0afa72015-04-03 14:46:27 +02003116 if (sess->listener->counters)
Olivier Houcharda798bf52019-03-08 18:52:00 +01003117 _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1);
Willy Tarreauadfb8562008-08-11 15:24:42 +02003118
Willy Tarreaue7dff022015-04-03 01:14:29 +02003119 if (!(s->flags & SF_ERR_MASK))
3120 s->flags |= SF_ERR_PRXCOND;
3121 if (!(s->flags & SF_FINST_MASK))
3122 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +02003123 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +02003124}
Willy Tarreauadfb8562008-08-11 15:24:42 +02003125
Willy Tarreau60b85b02008-11-30 23:28:40 +01003126/* This function is an analyser which processes the HTTP tarpit. It always
3127 * returns zero, at the beginning because it prevents any other processing
3128 * from occurring, and at the end because it terminates the request.
3129 */
Willy Tarreau87b09662015-04-03 00:22:06 +02003130int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +01003131{
Willy Tarreaueee5b512015-04-03 23:46:31 +02003132 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +01003133
Christopher Faulete0768eb2018-10-03 16:38:02 +02003134 if (IS_HTX_STRM(s))
3135 return htx_process_tarpit(s, req, an_bit);
3136
Willy Tarreau60b85b02008-11-30 23:28:40 +01003137 /* This connection is being tarpitted. The CLIENT side has
3138 * already set the connect expiration date to the right
3139 * timeout. We just have to check that the client is still
3140 * there and that the timeout has not expired.
3141 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02003142 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02003143 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +01003144 !tick_is_expired(req->analyse_exp, now_ms))
3145 return 0;
3146
3147 /* We will set the queue timer to the time spent, just for
3148 * logging purposes. We fake a 500 server error, so that the
3149 * attacker will not suspect his connection has been tarpitted.
3150 * It will not cause trouble to the logs because we can exclude
3151 * the tarpitted connections by filtering on the 'PT' status flags.
3152 */
Willy Tarreau60b85b02008-11-30 23:28:40 +01003153 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3154
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02003155 if (!(req->flags & CF_READ_ERROR))
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02003156 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau60b85b02008-11-30 23:28:40 +01003157
Christopher Faulet0184ea72017-01-05 14:06:34 +01003158 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau60b85b02008-11-30 23:28:40 +01003159 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +02003160
Willy Tarreaue7dff022015-04-03 01:14:29 +02003161 if (!(s->flags & SF_ERR_MASK))
3162 s->flags |= SF_ERR_PRXCOND;
3163 if (!(s->flags & SF_FINST_MASK))
3164 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +01003165 return 0;
3166}
3167
Willy Tarreau5a8f9472014-04-10 11:16:06 +02003168/* This function is an analyser which waits for the HTTP request body. It waits
3169 * for either the buffer to be full, or the full advertised contents to have
3170 * reached the buffer. It must only be called after the standard HTTP request
3171 * processing has occurred, because it expects the request to be parsed and will
3172 * look for the Expect header. It may send a 100-Continue interim response. It
3173 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
3174 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
3175 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +01003176 */
Willy Tarreau87b09662015-04-03 00:22:06 +02003177int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +01003178{
Willy Tarreaufb0afa72015-04-03 14:46:27 +02003179 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +02003180 struct http_txn *txn = s->txn;
3181 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +01003182
Christopher Faulete0768eb2018-10-03 16:38:02 +02003183 if (IS_HTX_STRM(s))
3184 return htx_wait_for_request_body(s, req, an_bit);
3185
Christopher Faulet87451fd2019-03-01 11:16:34 +01003186 if (msg->msg_state < HTTP_MSG_BODY)
3187 goto missing_data;
3188
Willy Tarreaud34af782008-11-30 23:36:37 +01003189 /* We have to parse the HTTP request body to find any required data.
3190 * "balance url_param check_post" should have been the only way to get
3191 * into this. We were brought here after HTTP header analysis, so all
3192 * related structures are ready.
3193 */
Willy Tarreau890988f2014-04-10 11:59:33 +02003194 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Christopher Faulet87451fd2019-03-01 11:16:34 +01003195 http_handle_expect_hdr(s, req, msg);
Willy Tarreau522d6c02009-12-06 18:49:18 +01003196
Willy Tarreaufa4a03c2012-03-09 21:28:54 +01003197 /* we have msg->sov which points to the first byte of message body.
Willy Tarreauf37954d2018-06-15 18:31:02 +02003198 * ci_head(req) still points to the beginning of the message. We
Willy Tarreau877e78d2013-04-07 18:48:08 +02003199 * must save the body in msg->next because it survives buffer
3200 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +01003201 */
Willy Tarreauea1175a2012-03-05 15:52:30 +01003202 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +01003203
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01003204 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +01003205 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3206 else
3207 msg->msg_state = HTTP_MSG_DATA;
3208 }
3209
Willy Tarreau890988f2014-04-10 11:59:33 +02003210 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
3211 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +02003212 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +02003213 goto missing_data;
3214
3215 /* OK we have everything we need now */
3216 goto http_end;
3217 }
3218
3219 /* OK here we're parsing a chunked-encoded message */
3220
Willy Tarreau522d6c02009-12-06 18:49:18 +01003221 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +01003222 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +01003223 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +01003224 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +01003225 */
Willy Tarreaue56cdd32017-09-21 08:36:33 +02003226 unsigned int chunk;
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003227 int ret = h1_parse_chunk_size(&req->buf, co_data(req) + msg->next, c_data(req), &chunk);
Willy Tarreaud34af782008-11-30 23:36:37 +01003228
Willy Tarreau115acb92009-12-26 13:56:06 +01003229 if (!ret)
3230 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +02003231 else if (ret < 0) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02003232 msg->err_pos = ci_data(req) + ret;
Willy Tarreaue56cdd32017-09-21 08:36:33 +02003233 if (msg->err_pos < 0)
Willy Tarreauc9fa0482018-07-10 17:43:27 +02003234 msg->err_pos += req->buf.size;
Willy Tarreau87b09662015-04-03 00:22:06 +02003235 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +01003236 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +02003237 }
Willy Tarreaue56cdd32017-09-21 08:36:33 +02003238
3239 msg->chunk_len = chunk;
3240 msg->body_len += chunk;
3241
3242 msg->sol = ret;
Christopher Faulet113f7de2015-12-14 14:52:13 +01003243 msg->next += ret;
Christopher Fauletd7c91962015-04-30 11:48:27 +02003244 msg->msg_state = msg->chunk_len ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreaud34af782008-11-30 23:36:37 +01003245 }
3246
Willy Tarreaud98cf932009-12-27 22:54:55 +01003247 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +02003248 * We have the first data byte is in msg->sov + msg->sol. We're waiting
3249 * for at least a whole chunk or the whole content length bytes after
3250 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +01003251 */
Willy Tarreau890988f2014-04-10 11:59:33 +02003252 if (msg->msg_state == HTTP_MSG_TRAILERS)
3253 goto http_end;
3254
Willy Tarreaue115b492015-05-01 23:05:14 +02003255 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +01003256 goto http_end;
3257
3258 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +02003259 /* we get here if we need to wait for more data. If the buffer is full,
3260 * we have the maximum we can expect.
3261 */
Willy Tarreau23752332018-06-15 14:54:53 +02003262 if (channel_full(req, global.tune.maxrewrite))
Willy Tarreau31a19952014-04-10 11:50:37 +02003263 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +01003264
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02003265 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +01003266 txn->status = 408;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02003267 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau79ebac62010-06-07 13:47:49 +02003268
Willy Tarreaue7dff022015-04-03 01:14:29 +02003269 if (!(s->flags & SF_ERR_MASK))
3270 s->flags |= SF_ERR_CLITO;
3271 if (!(s->flags & SF_FINST_MASK))
3272 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +01003273 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +01003274 }
Willy Tarreau522d6c02009-12-06 18:49:18 +01003275
3276 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +02003277 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +01003278 /* Not enough data. We'll re-use the http-request
3279 * timeout here. Ideally, we should set the timeout
3280 * relative to the accept() date. We just set the
3281 * request timeout once at the beginning of the
3282 * request.
3283 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02003284 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +01003285 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +02003286 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +01003287 return 0;
3288 }
Willy Tarreau522d6c02009-12-06 18:49:18 +01003289
3290 http_end:
3291 /* The situation will not evolve, so let's give up on the analysis. */
3292 s->logs.tv_request = now; /* update the request timer to reflect full request */
3293 req->analysers &= ~an_bit;
3294 req->analyse_exp = TICK_ETERNITY;
3295 return 1;
3296
3297 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau10e61cb2017-01-04 14:51:22 +01003298 txn->req.err_state = txn->req.msg_state;
Willy Tarreau522d6c02009-12-06 18:49:18 +01003299 txn->req.msg_state = HTTP_MSG_ERROR;
3300 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02003301 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau522d6c02009-12-06 18:49:18 +01003302
Willy Tarreaue7dff022015-04-03 01:14:29 +02003303 if (!(s->flags & SF_ERR_MASK))
3304 s->flags |= SF_ERR_PRXCOND;
3305 if (!(s->flags & SF_FINST_MASK))
3306 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +02003307
Willy Tarreau522d6c02009-12-06 18:49:18 +01003308 return_err_msg:
Christopher Faulet0184ea72017-01-05 14:06:34 +01003309 req->analysers &= AN_REQ_FLT_END;
Olivier Houcharda798bf52019-03-08 18:52:00 +01003310 _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1);
Willy Tarreaufb0afa72015-04-03 14:46:27 +02003311 if (sess->listener->counters)
Olivier Houcharda798bf52019-03-08 18:52:00 +01003312 _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1);
Willy Tarreau522d6c02009-12-06 18:49:18 +01003313 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +01003314}
3315
Willy Tarreaud1de8af2012-05-18 22:12:14 +02003316/* send a server's name with an outgoing request over an established connection.
3317 * Note: this function is designed to be called once the request has been scheduled
3318 * for being forwarded. This is the reason why it rewinds the buffer before
3319 * proceeding.
3320 */
Christopher Faulet27a3dc82018-10-23 15:34:07 +02003321int http_send_name_header(struct stream *s, struct proxy* be, const char* srv_name) {
Mark Lamourinec2247f02012-01-04 13:02:01 -05003322
3323 struct hdr_ctx ctx;
Christopher Faulet27a3dc82018-10-23 15:34:07 +02003324 struct http_txn *txn = s->txn;
Mark Lamourinec2247f02012-01-04 13:02:01 -05003325 char *hdr_name = be->server_id_hdr_name;
3326 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +02003327 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -05003328 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +02003329 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -05003330
Christopher Faulet64159df2018-10-24 21:15:35 +02003331 if (IS_HTX_STRM(s))
3332 return htx_send_name_header(s, be, srv_name);
William Lallemandd9e90662012-01-30 17:27:17 +01003333 ctx.idx = 0;
3334
Willy Tarreau211cdec2014-04-17 20:18:08 +02003335 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +02003336 if (old_o) {
3337 /* The request was already skipped, let's restore it */
Willy Tarreaubcbd3932018-06-06 07:13:22 +02003338 c_rew(chn, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +02003339 txn->req.next += old_o;
Christopher Fauletd7c91962015-04-30 11:48:27 +02003340 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +02003341 }
3342
Willy Tarreauf37954d2018-06-15 18:31:02 +02003343 old_i = ci_data(chn);
3344 while (http_find_header2(hdr_name, hdr_name_len, ci_head(txn->req.chn), &txn->hdr_idx, &ctx)) {
Mark Lamourinec2247f02012-01-04 13:02:01 -05003345 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +01003346 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -05003347 }
3348
3349 /* Add the new header requested with the server value */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003350 hdr_val = trash.area;
Mark Lamourinec2247f02012-01-04 13:02:01 -05003351 memcpy(hdr_val, hdr_name, hdr_name_len);
3352 hdr_val += hdr_name_len;
3353 *hdr_val++ = ':';
3354 *hdr_val++ = ' ';
Willy Tarreau843b7cb2018-07-13 10:54:26 +02003355 hdr_val += strlcpy2(hdr_val, srv_name,
3356 trash.area + trash.size - hdr_val);
3357 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.area,
3358 hdr_val - trash.area);
Mark Lamourinec2247f02012-01-04 13:02:01 -05003359
Willy Tarreaud1de8af2012-05-18 22:12:14 +02003360 if (old_o) {
3361 /* If this was a forwarded request, we must readjust the amount of
3362 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +02003363 * variations. Note that the current state is >= HTTP_MSG_BODY,
3364 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +02003365 */
Willy Tarreauf37954d2018-06-15 18:31:02 +02003366 old_o += ci_data(chn) - old_i;
Willy Tarreaubcbd3932018-06-06 07:13:22 +02003367 c_adv(chn, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +02003368 txn->req.next -= old_o;
3369 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +02003370 }
3371
Mark Lamourinec2247f02012-01-04 13:02:01 -05003372 return 0;
3373}
3374
Willy Tarreau610ecce2010-01-04 21:15:02 +01003375/* Terminate current transaction and prepare a new one. This is very tricky
3376 * right now but it works.
3377 */
Willy Tarreau87b09662015-04-03 00:22:06 +02003378void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +01003379{
Willy Tarreaueee5b512015-04-03 23:46:31 +02003380 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +02003381 struct proxy *fe = strm_fe(s);
Willy Tarreau858b1032015-12-07 17:04:59 +01003382 struct proxy *be = s->be;
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003383 struct conn_stream *cs;
Willy Tarreau323a2d92015-08-04 19:00:17 +02003384 struct connection *srv_conn;
3385 struct server *srv;
Willy Tarreau449d74a2015-08-05 17:16:33 +02003386 unsigned int prev_flags = s->txn->flags;
Willy Tarreau068621e2013-12-23 15:11:25 +01003387
Willy Tarreau610ecce2010-01-04 21:15:02 +01003388 /* FIXME: We need a more portable way of releasing a backend's and a
3389 * server's connections. We need a safer way to reinitialize buffer
3390 * flags. We also need a more accurate method for computing per-request
3391 * data.
3392 */
Olivier Houchard9aaf7782017-09-13 18:30:23 +02003393 cs = objt_cs(s->si[1].end);
3394 srv_conn = cs_conn(cs);
Willy Tarreau610ecce2010-01-04 21:15:02 +01003395
Willy Tarreau4213a112013-12-15 10:25:42 +01003396 /* unless we're doing keep-alive, we want to quickly close the connection
3397 * to the server.
3398 */
Willy Tarreaueee5b512015-04-03 23:46:31 +02003399 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Olivier Houchard7c6f8b12018-11-13 16:48:36 +01003400 !si_conn_ready(&s->si[1]) || !srv_conn->owner) {
Willy Tarreau350f4872014-11-28 14:42:25 +01003401 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
3402 si_shutr(&s->si[1]);
3403 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +01003404 }
Willy Tarreau610ecce2010-01-04 21:15:02 +01003405
Willy Tarreaue7dff022015-04-03 01:14:29 +02003406 if (s->flags & SF_BE_ASSIGNED) {
Olivier Houcharda798bf52019-03-08 18:52:00 +01003407 _HA_ATOMIC_SUB(&be->beconn, 1);
Willy Tarreau2d5cd472012-03-01 23:34:37 +01003408 if (unlikely(s->srv_conn))
3409 sess_change_server(s, NULL);
3410 }
Willy Tarreau610ecce2010-01-04 21:15:02 +01003411
3412 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +02003413 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +01003414
Willy Tarreaueee5b512015-04-03 23:46:31 +02003415 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +01003416 int n;
3417
Willy Tarreaueee5b512015-04-03 23:46:31 +02003418 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003419 if (n < 1 || n > 5)
3420 n = 0;
3421
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02003422 if (fe->mode == PR_MODE_HTTP) {
Olivier Houcharda798bf52019-03-08 18:52:00 +01003423 _HA_ATOMIC_ADD(&fe->fe_counters.p.http.rsp[n], 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01003424 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02003425 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau858b1032015-12-07 17:04:59 +01003426 (be->mode == PR_MODE_HTTP)) {
Olivier Houcharda798bf52019-03-08 18:52:00 +01003427 _HA_ATOMIC_ADD(&be->be_counters.p.http.rsp[n], 1);
3428 _HA_ATOMIC_ADD(&be->be_counters.p.http.cum_req, 1);
Willy Tarreau5e16cbc2012-11-24 14:54:13 +01003429 }
Willy Tarreau610ecce2010-01-04 21:15:02 +01003430 }
3431
3432 /* don't count other requests' data */
Willy Tarreauf37954d2018-06-15 18:31:02 +02003433 s->logs.bytes_in -= ci_data(&s->req);
3434 s->logs.bytes_out -= ci_data(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +01003435
Willy Tarreau66425e32018-07-25 06:55:12 +02003436 /* we may need to know the position in the queue */
3437 pendconn_free(s);
3438
Willy Tarreau610ecce2010-01-04 21:15:02 +01003439 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02003440 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02003441 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02003442 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +01003443 s->do_log(s);
3444 }
3445
Willy Tarreaud713bcc2014-06-25 15:36:04 +02003446 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +02003447 stream_stop_content_counters(s);
3448 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +02003449
Willy Tarreau9efd7452018-05-31 14:48:54 +02003450 /* reset the profiling counter */
3451 s->task->calls = 0;
3452 s->task->cpu_time = 0;
3453 s->task->lat_time = 0;
Willy Tarreaud2d33482019-04-25 17:09:07 +02003454 s->task->call_date = ((profiling & HA_PROF_TASKS_MASK) >= HA_PROF_TASKS_AUTO) ? now_mono_time() : 0;
Willy Tarreau5e370da2019-04-25 18:33:37 +02003455 s->call_rate.curr_sec = s->call_rate.curr_ctr = s->call_rate.prev_ctr = 0;
Willy Tarreau9efd7452018-05-31 14:48:54 +02003456
Willy Tarreau610ecce2010-01-04 21:15:02 +01003457 s->logs.accept_date = date; /* user-visible date for logging */
3458 s->logs.tv_accept = now; /* corrected date for internal use */
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +02003459 s->logs.t_handshake = 0; /* There are no handshake in keep alive connection. */
3460 s->logs.t_idle = -1;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003461 tv_zero(&s->logs.tv_request);
3462 s->logs.t_queue = -1;
3463 s->logs.t_connect = -1;
3464 s->logs.t_data = -1;
3465 s->logs.t_close = 0;
Patrick Hemmerffe5e8c2018-05-11 12:52:31 -04003466 s->logs.prx_queue_pos = 0; /* we get the number of pending conns before us */
3467 s->logs.srv_queue_pos = 0; /* we will get this number soon */
Willy Tarreau610ecce2010-01-04 21:15:02 +01003468
Willy Tarreauf37954d2018-06-15 18:31:02 +02003469 s->logs.bytes_in = s->req.total = ci_data(&s->req);
3470 s->logs.bytes_out = s->res.total = ci_data(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +01003471
Willy Tarreau3fdb3662012-11-12 00:42:33 +01003472 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +02003473 if (s->flags & SF_CURR_SESS) {
3474 s->flags &= ~SF_CURR_SESS;
Olivier Houcharda798bf52019-03-08 18:52:00 +01003475 _HA_ATOMIC_SUB(&__objt_server(s->target)->cur_sess, 1);
Willy Tarreau610ecce2010-01-04 21:15:02 +01003476 }
Willy Tarreau858b1032015-12-07 17:04:59 +01003477 if (may_dequeue_tasks(objt_server(s->target), be))
Willy Tarreau3fdb3662012-11-12 00:42:33 +01003478 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +01003479 }
3480
Willy Tarreau3fdb3662012-11-12 00:42:33 +01003481 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003482
Olivier Houchard7c6f8b12018-11-13 16:48:36 +01003483
3484 /* If we're doing keepalive, first call the mux detach() method
3485 * to let it know we want to detach without freing the connection.
3486 * We then can call si_release_endpoint() to destroy the conn_stream
Willy Tarreau4213a112013-12-15 10:25:42 +01003487 */
Willy Tarreaueee5b512015-04-03 23:46:31 +02003488 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Olivier Houcharda70e1762018-12-13 18:01:00 +01003489 !si_conn_ready(&s->si[1]) ||
3490 (srv_conn && srv_conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH)))
Willy Tarreau323a2d92015-08-04 19:00:17 +02003491 srv_conn = NULL;
Olivier Houchard985f1392018-11-30 17:31:52 +01003492 else if (!srv_conn->owner) {
3493 srv_conn->owner = s->sess;
Olivier Houcharda4d4fdf2018-12-14 19:27:06 +01003494 /* Add it unconditionally to the session list, it'll be removed
3495 * later if needed by session_check_idle_conn(), once we'll
3496 * have released the endpoint and know if it no longer has
3497 * attached streams, and so an idling connection
3498 */
Olivier Houchard351411f2018-12-27 17:20:54 +01003499 if (!session_add_conn(s->sess, srv_conn, s->target)) {
3500 srv_conn->owner = NULL;
3501 /* Try to add the connection to the server idle list.
3502 * If it fails, as the connection no longer has an
3503 * owner, it will be destroy later by
3504 * si_release_endpoint(), anyway
3505 */
3506 srv_add_to_idle_list(objt_server(srv_conn->target), srv_conn);
3507 srv_conn = NULL;
3508
3509 }
Olivier Houchard985f1392018-11-30 17:31:52 +01003510 }
Olivier Houchard7c6f8b12018-11-13 16:48:36 +01003511 si_release_endpoint(&s->si[1]);
Olivier Houcharda4d4fdf2018-12-14 19:27:06 +01003512 if (srv_conn && srv_conn->owner == s->sess) {
3513 if (session_check_idle_conn(s->sess, srv_conn) != 0)
3514 srv_conn = NULL;
3515 }
3516
Willy Tarreau4213a112013-12-15 10:25:42 +01003517
Willy Tarreau350f4872014-11-28 14:42:25 +01003518 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
3519 s->si[1].err_type = SI_ET_NONE;
3520 s->si[1].conn_retries = 0; /* used for logging too */
3521 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +02003522 s->si[1].flags &= SI_FL_ISBACK | SI_FL_DONT_WAKE; /* we're in the context of process_stream */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01003523 s->req.flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT|CF_WAKE_CONNECT|CF_WROTE_DATA);
Willy Tarreauede3d882018-10-24 17:17:56 +02003524 s->res.flags &= ~(CF_SHUTR|CF_SHUTR_NOW|CF_READ_ATTACHED|CF_READ_ERROR|CF_READ_NOEXP|CF_STREAMER|CF_STREAMER_FAST|CF_WRITE_PARTIAL|CF_NEVER_WAIT|CF_WROTE_DATA);
Willy Tarreaue7dff022015-04-03 01:14:29 +02003525 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
3526 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
3527 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +01003528
Patrick Hemmere3faf022018-08-22 10:02:00 -04003529 hlua_ctx_destroy(s->hlua);
3530 s->hlua = NULL;
3531
Willy Tarreaueee5b512015-04-03 23:46:31 +02003532 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003533 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +02003534 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +01003535
3536 if (prev_status == 401 || prev_status == 407) {
3537 /* In HTTP keep-alive mode, if we receive a 401, we still have
3538 * a chance of being able to send the visitor again to the same
3539 * server over the same connection. This is required by some
3540 * broken protocols such as NTLM, and anyway whenever there is
3541 * an opportunity for sending the challenge to the proper place,
Lukas Tribus80512b12018-10-27 20:07:40 +02003542 * it's better to do it (at least it helps with debugging), at
3543 * least for non-deterministic load balancing algorithms.
Willy Tarreau068621e2013-12-23 15:11:25 +01003544 */
Olivier Houchard250031e2019-05-29 15:01:50 +02003545 s->sess->flags |= SESS_FL_PREFER_LAST;
Willy Tarreau068621e2013-12-23 15:11:25 +01003546 }
3547
Willy Tarreau53f96852016-02-02 18:50:47 +01003548 /* Never ever allow to reuse a connection from a non-reuse backend */
3549 if (srv_conn && (be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
3550 srv_conn->flags |= CO_FL_PRIVATE;
3551
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02003552 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +01003553 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003554
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02003555 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01003556 s->req.flags |= CF_NEVER_WAIT;
3557 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +02003558 }
3559
Willy Tarreau714ea782015-11-25 20:11:11 +01003560 /* we're removing the analysers, we MUST re-enable events detection.
3561 * We don't enable close on the response channel since it's either
3562 * already closed, or in keep-alive with an idle connection handler.
3563 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01003564 channel_auto_read(&s->req);
3565 channel_auto_close(&s->req);
3566 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +01003567
Willy Tarreau1c59bd52015-11-02 20:20:11 +01003568 /* we're in keep-alive with an idle connection, monitor it if not already done */
3569 if (srv_conn && LIST_ISEMPTY(&srv_conn->list)) {
Willy Tarreau323a2d92015-08-04 19:00:17 +02003570 srv = objt_server(srv_conn->target);
Olivier Houchard7c6f8b12018-11-13 16:48:36 +01003571 if (srv) {
3572 if (srv_conn->flags & CO_FL_PRIVATE)
3573 LIST_ADD(&srv->priv_conns[tid], &srv_conn->list);
3574 else if (prev_flags & TX_NOT_FIRST)
3575 /* note: we check the request, not the connection, but
3576 * this is valid for strategies SAFE and AGGR, and in
3577 * case of ALWS, we don't care anyway.
3578 */
3579 LIST_ADD(&srv->safe_conns[tid], &srv_conn->list);
3580 else
3581 LIST_ADD(&srv->idle_conns[tid], &srv_conn->list);
3582 }
Willy Tarreau4320eaa2015-08-05 11:08:30 +02003583 }
Christopher Faulete6006242017-03-10 11:52:44 +01003584 s->req.analysers = strm_li(s) ? strm_li(s)->analysers : 0;
3585 s->res.analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003586}
3587
3588
3589/* This function updates the request state machine according to the response
3590 * state machine and buffer flags. It returns 1 if it changes anything (flag
3591 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
3592 * it is only used to find when a request/response couple is complete. Both
3593 * this function and its equivalent should loop until both return zero. It
3594 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
3595 */
Willy Tarreau87b09662015-04-03 00:22:06 +02003596int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +01003597{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01003598 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +02003599 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003600 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003601 unsigned int old_state = txn->req.msg_state;
3602
Christopher Faulet4be98032017-07-18 10:48:24 +02003603 if (unlikely(txn->req.msg_state < HTTP_MSG_DONE))
Willy Tarreau610ecce2010-01-04 21:15:02 +01003604 return 0;
3605
3606 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +01003607 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +02003608 * We can shut the read side unless we want to abort_on_close,
3609 * or we have a POST request. The issue with POST requests is
3610 * that some browsers still send a CRLF after the request, and
3611 * this CRLF must be read so that it does not remain in the kernel
3612 * buffers, otherwise a close could cause an RST on some systems
3613 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +01003614 * Note that if we're using keep-alive on the client side, we'd
3615 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +02003616 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +01003617 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +01003618 */
Willy Tarreau3988d932013-12-27 23:03:08 +01003619 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
3620 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
Christopher Faulet769d0e92019-03-22 14:23:18 +01003621 !(s->be->options & PR_O_ABRT_CLOSE) &&
Willy Tarreau3988d932013-12-27 23:03:08 +01003622 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003623 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +01003624
Willy Tarreau40f151a2012-12-20 12:10:09 +01003625 /* if the server closes the connection, we want to immediately react
3626 * and close the socket to save packets and syscalls.
3627 */
Willy Tarreau350f4872014-11-28 14:42:25 +01003628 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +01003629
Willy Tarreau7f876a12015-11-18 11:59:55 +01003630 /* In any case we've finished parsing the request so we must
3631 * disable Nagle when sending data because 1) we're not going
3632 * to shut this side, and 2) the server is waiting for us to
3633 * send pending data.
3634 */
3635 chn->flags |= CF_NEVER_WAIT;
3636
Willy Tarreau610ecce2010-01-04 21:15:02 +01003637 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
3638 goto wait_other_side;
3639
3640 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
3641 /* The server has not finished to respond, so we
3642 * don't want to move in order not to upset it.
3643 */
3644 goto wait_other_side;
3645 }
3646
Willy Tarreau610ecce2010-01-04 21:15:02 +01003647 /* When we get here, it means that both the request and the
3648 * response have finished receiving. Depending on the connection
3649 * mode, we'll have to wait for the last bytes to leave in either
3650 * direction, and sometimes for a close to be effective.
3651 */
3652
Willy Tarreaucce7fa42010-01-16 23:19:39 +01003653 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
3654 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003655 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
3656 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +01003657 }
3658 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
3659 /* Option forceclose is set, or either side wants to close,
3660 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +02003661 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +01003662 * once both states are CLOSED.
Christopher Faulet1486b0a2017-07-18 11:42:08 +02003663 *
3664 * However, there is an exception if the response
3665 * length is undefined. In this case, we need to wait
3666 * the close from the server. The response will be
3667 * switched in TUNNEL mode until the end.
Willy Tarreaucce7fa42010-01-16 23:19:39 +01003668 */
Christopher Faulet1486b0a2017-07-18 11:42:08 +02003669 if (!(txn->rsp.flags & HTTP_MSGF_XFER_LEN) &&
3670 txn->rsp.msg_state != HTTP_MSG_CLOSED)
3671 goto check_channel_flags;
3672
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003673 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
3674 channel_shutr_now(chn);
3675 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +01003676 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +01003677 }
3678 else {
Willy Tarreau4213a112013-12-15 10:25:42 +01003679 /* The last possible modes are keep-alive and tunnel. Tunnel mode
3680 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +01003681 */
Willy Tarreau4213a112013-12-15 10:25:42 +01003682 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
3683 channel_auto_read(chn);
3684 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau4213a112013-12-15 10:25:42 +01003685 }
Willy Tarreau610ecce2010-01-04 21:15:02 +01003686 }
3687
Christopher Faulet4be98032017-07-18 10:48:24 +02003688 goto check_channel_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003689 }
3690
3691 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
3692 http_msg_closing:
3693 /* nothing else to forward, just waiting for the output buffer
3694 * to be empty and for the shutw_now to take effect.
3695 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003696 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +01003697 txn->req.msg_state = HTTP_MSG_CLOSED;
3698 goto http_msg_closed;
3699 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003700 else if (chn->flags & CF_SHUTW) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +01003701 txn->req.err_state = txn->req.msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003702 txn->req.msg_state = HTTP_MSG_ERROR;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003703 }
Christopher Faulet56d26092017-07-20 11:05:10 +02003704 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003705 }
3706
3707 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
3708 http_msg_closed:
Willy Tarreau80593512017-12-14 10:43:31 +01003709 /* if we don't know whether the server will close, we need to hard close */
3710 if (txn->rsp.flags & HTTP_MSGF_XFER_LEN)
3711 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
3712
Willy Tarreau3988d932013-12-27 23:03:08 +01003713 /* see above in MSG_DONE why we only do this in these states */
3714 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
3715 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
Christopher Faulet769d0e92019-03-22 14:23:18 +01003716 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +01003717 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +01003718 goto wait_other_side;
3719 }
3720
Christopher Faulet4be98032017-07-18 10:48:24 +02003721 check_channel_flags:
3722 /* Here, we are in HTTP_MSG_DONE or HTTP_MSG_TUNNEL */
3723 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
3724 /* if we've just closed an output, let's switch */
Christopher Faulet4be98032017-07-18 10:48:24 +02003725 txn->req.msg_state = HTTP_MSG_CLOSING;
3726 goto http_msg_closing;
3727 }
3728
3729
Willy Tarreau610ecce2010-01-04 21:15:02 +01003730 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003731 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003732}
3733
3734
3735/* This function updates the response state machine according to the request
3736 * state machine and buffer flags. It returns 1 if it changes anything (flag
3737 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
3738 * it is only used to find when a request/response couple is complete. Both
3739 * this function and its equivalent should loop until both return zero. It
3740 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
3741 */
Willy Tarreau87b09662015-04-03 00:22:06 +02003742int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +01003743{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01003744 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +02003745 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003746 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003747 unsigned int old_state = txn->rsp.msg_state;
3748
Christopher Faulet4be98032017-07-18 10:48:24 +02003749 if (unlikely(txn->rsp.msg_state < HTTP_MSG_DONE))
Willy Tarreau610ecce2010-01-04 21:15:02 +01003750 return 0;
3751
3752 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
3753 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +01003754 * still monitor the server connection for a possible close
3755 * while the request is being uploaded, so we don't disable
3756 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +01003757 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003758 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +01003759
3760 if (txn->req.msg_state == HTTP_MSG_ERROR)
3761 goto wait_other_side;
3762
3763 if (txn->req.msg_state < HTTP_MSG_DONE) {
3764 /* The client seems to still be sending data, probably
3765 * because we got an error response during an upload.
3766 * We have the choice of either breaking the connection
3767 * or letting it pass through. Let's do the later.
3768 */
3769 goto wait_other_side;
3770 }
3771
Willy Tarreau610ecce2010-01-04 21:15:02 +01003772 /* When we get here, it means that both the request and the
3773 * response have finished receiving. Depending on the connection
3774 * mode, we'll have to wait for the last bytes to leave in either
3775 * direction, and sometimes for a close to be effective.
3776 */
3777
3778 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
3779 /* Server-close mode : shut read and wait for the request
3780 * side to close its output buffer. The caller will detect
3781 * when we're in DONE and the other is in CLOSED and will
3782 * catch that for the final cleanup.
3783 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003784 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
3785 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +01003786 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +01003787 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
3788 /* Option forceclose is set, or either side wants to close,
3789 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +02003790 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +01003791 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +01003792 */
Christopher Fauletfd04fcf2018-02-02 15:54:15 +01003793 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003794 channel_shutr_now(chn);
3795 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +01003796 }
Willy Tarreau610ecce2010-01-04 21:15:02 +01003797 }
3798 else {
Willy Tarreau4213a112013-12-15 10:25:42 +01003799 /* The last possible modes are keep-alive and tunnel. Tunnel will
3800 * need to forward remaining data. Keep-alive will need to monitor
3801 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +01003802 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003803 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +02003804 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +01003805 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
3806 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003807 }
3808
Christopher Faulet4be98032017-07-18 10:48:24 +02003809 goto check_channel_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003810 }
3811
3812 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
3813 http_msg_closing:
3814 /* nothing else to forward, just waiting for the output buffer
3815 * to be empty and for the shutw_now to take effect.
3816 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003817 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +01003818 txn->rsp.msg_state = HTTP_MSG_CLOSED;
3819 goto http_msg_closed;
3820 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003821 else if (chn->flags & CF_SHUTW) {
Christopher Fauleta3992e02017-07-18 10:35:55 +02003822 txn->rsp.err_state = txn->rsp.msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003823 txn->rsp.msg_state = HTTP_MSG_ERROR;
Olivier Houcharda798bf52019-03-08 18:52:00 +01003824 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01003825 if (objt_server(s->target))
Olivier Houcharda798bf52019-03-08 18:52:00 +01003826 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.cli_aborts, 1);
Willy Tarreau610ecce2010-01-04 21:15:02 +01003827 }
Christopher Faulet56d26092017-07-20 11:05:10 +02003828 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003829 }
3830
3831 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
3832 http_msg_closed:
3833 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +01003834 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003835 channel_auto_close(chn);
3836 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +01003837 goto wait_other_side;
3838 }
3839
Christopher Faulet4be98032017-07-18 10:48:24 +02003840 check_channel_flags:
3841 /* Here, we are in HTTP_MSG_DONE or HTTP_MSG_TUNNEL */
3842 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
3843 /* if we've just closed an output, let's switch */
3844 txn->rsp.msg_state = HTTP_MSG_CLOSING;
3845 goto http_msg_closing;
3846 }
3847
Willy Tarreau610ecce2010-01-04 21:15:02 +01003848 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +02003849 /* We force the response to leave immediately if we're waiting for the
3850 * other side, since there is no pending shutdown to push it out.
3851 */
3852 if (!channel_is_empty(chn))
3853 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +02003854 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003855}
3856
3857
Christopher Faulet894da4c2017-07-18 11:29:07 +02003858/* Resync the request and response state machines. */
3859void http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +01003860{
Willy Tarreaueee5b512015-04-03 23:46:31 +02003861 struct http_txn *txn = s->txn;
Christopher Faulet894da4c2017-07-18 11:29:07 +02003862#ifdef DEBUG_FULL
Willy Tarreau610ecce2010-01-04 21:15:02 +01003863 int old_req_state = txn->req.msg_state;
3864 int old_res_state = txn->rsp.msg_state;
Christopher Faulet894da4c2017-07-18 11:29:07 +02003865#endif
Willy Tarreau610ecce2010-01-04 21:15:02 +01003866
Willy Tarreau610ecce2010-01-04 21:15:02 +01003867 http_sync_req_state(s);
3868 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +01003869 if (!http_sync_res_state(s))
3870 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +01003871 if (!http_sync_req_state(s))
3872 break;
3873 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +02003874
Christopher Faulet894da4c2017-07-18 11:29:07 +02003875 DPRINTF(stderr,"[%u] %s: stream=%p old=%s,%s cur=%s,%s "
3876 "req->analysers=0x%08x res->analysers=0x%08x\n",
3877 now_ms, __FUNCTION__, s,
Willy Tarreau0da5b3b2017-09-21 09:30:46 +02003878 h1_msg_state_str(old_req_state), h1_msg_state_str(old_res_state),
3879 h1_msg_state_str(txn->req.msg_state), h1_msg_state_str(txn->rsp.msg_state),
Christopher Faulet894da4c2017-07-18 11:29:07 +02003880 s->req.analysers, s->res.analysers);
Christopher Faulet814d2702017-03-30 11:33:44 +02003881
3882
Willy Tarreau610ecce2010-01-04 21:15:02 +01003883 /* OK, both state machines agree on a compatible state.
3884 * There are a few cases we're interested in :
Willy Tarreau610ecce2010-01-04 21:15:02 +01003885 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
3886 * directions, so let's simply disable both analysers.
Christopher Fauletf77bb532017-07-18 11:18:46 +02003887 * - HTTP_MSG_CLOSED on the response only or HTTP_MSG_ERROR on either
3888 * means we must abort the request.
3889 * - HTTP_MSG_TUNNEL on either means we have to disable analyser on
3890 * corresponding channel.
3891 * - HTTP_MSG_DONE or HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE
3892 * on the response with server-close mode means we've completed one
3893 * request and we must re-initialize the server connection.
Willy Tarreau610ecce2010-01-04 21:15:02 +01003894 */
Christopher Fauletf77bb532017-07-18 11:18:46 +02003895 if (txn->req.msg_state == HTTP_MSG_CLOSED &&
3896 txn->rsp.msg_state == HTTP_MSG_CLOSED) {
Christopher Faulet0184ea72017-01-05 14:06:34 +01003897 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01003898 channel_auto_close(&s->req);
3899 channel_auto_read(&s->req);
Christopher Faulet0184ea72017-01-05 14:06:34 +01003900 s->res.analysers &= AN_RES_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01003901 channel_auto_close(&s->res);
3902 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +01003903 }
Christopher Fauletf77bb532017-07-18 11:18:46 +02003904 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
3905 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +01003906 txn->req.msg_state == HTTP_MSG_ERROR) {
Christopher Faulet0184ea72017-01-05 14:06:34 +01003907 s->res.analysers &= AN_RES_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01003908 channel_auto_close(&s->res);
3909 channel_auto_read(&s->res);
Christopher Faulet0184ea72017-01-05 14:06:34 +01003910 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01003911 channel_abort(&s->req);
3912 channel_auto_close(&s->req);
3913 channel_auto_read(&s->req);
3914 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +01003915 }
Christopher Fauletf77bb532017-07-18 11:18:46 +02003916 else if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
3917 txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
3918 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
3919 s->req.analysers &= AN_REQ_FLT_END;
3920 if (HAS_REQ_DATA_FILTERS(s))
3921 s->req.analysers |= AN_REQ_FLT_XFER_DATA;
3922 }
3923 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
3924 s->res.analysers &= AN_RES_FLT_END;
3925 if (HAS_RSP_DATA_FILTERS(s))
3926 s->res.analysers |= AN_RES_FLT_XFER_DATA;
3927 }
3928 channel_auto_close(&s->req);
3929 channel_auto_read(&s->req);
3930 channel_auto_close(&s->res);
3931 channel_auto_read(&s->res);
3932 }
Willy Tarreau4213a112013-12-15 10:25:42 +01003933 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
3934 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +01003935 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +01003936 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3937 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3938 /* server-close/keep-alive: terminate this transaction,
3939 * possibly killing the server connection and reinitialize
Willy Tarreau3de5bd62016-05-02 16:07:07 +02003940 * a fresh-new transaction, but only once we're sure there's
3941 * enough room in the request and response buffer to process
Christopher Fauletc0c672a2017-03-28 11:51:33 +02003942 * another request. They must not hold any pending output data
3943 * and the response buffer must realigned
3944 * (realign is done is http_end_txn_clean_session).
Willy Tarreau610ecce2010-01-04 21:15:02 +01003945 */
Willy Tarreauf37954d2018-06-15 18:31:02 +02003946 if (co_data(&s->req))
Willy Tarreau3de5bd62016-05-02 16:07:07 +02003947 s->req.flags |= CF_WAKE_WRITE;
Willy Tarreauf37954d2018-06-15 18:31:02 +02003948 else if (co_data(&s->res))
Willy Tarreau3de5bd62016-05-02 16:07:07 +02003949 s->res.flags |= CF_WAKE_WRITE;
Christopher Fauleta81ff602017-07-18 22:01:05 +02003950 else {
3951 s->req.analysers = AN_REQ_FLT_END;
3952 s->res.analysers = AN_RES_FLT_END;
3953 txn->flags |= TX_WAIT_CLEANUP;
3954 }
Willy Tarreau610ecce2010-01-04 21:15:02 +01003955 }
Willy Tarreau610ecce2010-01-04 21:15:02 +01003956}
3957
Willy Tarreaud98cf932009-12-27 22:54:55 +01003958/* This function is an analyser which forwards request body (including chunk
3959 * sizes if any). It is called as soon as we must forward, even if we forward
3960 * zero byte. The only situation where it must not be called is when we're in
3961 * tunnel mode and we want to forward till the close. It's used both to forward
3962 * remaining data and to resync after end of body. It expects the msg_state to
3963 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
Willy Tarreau87b09662015-04-03 00:22:06 +02003964 * read more data, or 1 once we can go on with next request or end the stream.
Willy Tarreau124d9912011-03-01 20:30:48 +01003965 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +02003966 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +01003967 */
Willy Tarreau87b09662015-04-03 00:22:06 +02003968int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +01003969{
Willy Tarreaufb0afa72015-04-03 14:46:27 +02003970 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +02003971 struct http_txn *txn = s->txn;
3972 struct http_msg *msg = &s->txn->req;
Christopher Faulet93e02d82019-03-08 14:18:50 +01003973 short status = 0;
Christopher Faulet3e344292015-11-24 16:24:13 +01003974 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +01003975
Christopher Faulete0768eb2018-10-03 16:38:02 +02003976 if (IS_HTX_STRM(s))
3977 return htx_request_forward_body(s, req, an_bit);
3978
Christopher Faulet45073512018-07-20 10:16:29 +02003979 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Christopher Faulet814d2702017-03-30 11:33:44 +02003980 now_ms, __FUNCTION__,
3981 s,
3982 req,
3983 req->rex, req->wex,
3984 req->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02003985 ci_data(req),
Christopher Faulet814d2702017-03-30 11:33:44 +02003986 req->analysers);
3987
Willy Tarreauf5c8bd62010-01-04 07:10:34 +01003988 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3989 return 0;
3990
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02003991 if ((req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
Willy Tarreauf37954d2018-06-15 18:31:02 +02003992 ((req->flags & CF_SHUTW) && (req->to_forward || co_data(req)))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +02003993 /* Output closed while we were sending data. We must abort and
3994 * wake the other side up.
3995 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +01003996 msg->err_state = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +02003997 msg->msg_state = HTTP_MSG_ERROR;
3998 http_resync_states(s);
Christopher Faulet2f5c7842019-03-19 14:55:11 +01003999 return 1;
Willy Tarreau082b01c2010-01-02 23:58:04 +01004000 }
4001
Willy Tarreaud98cf932009-12-27 22:54:55 +01004002 /* Note that we don't have to send 100-continue back because we don't
4003 * need the data to complete our job, and it's up to the server to
4004 * decide whether to return 100, 417 or anything else in return of
4005 * an "Expect: 100-continue" header.
4006 */
Christopher Fauletd7c91962015-04-30 11:48:27 +02004007 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01004008 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
4009 ? HTTP_MSG_CHUNK_SIZE
4010 : HTTP_MSG_DATA);
Christopher Fauletd7c91962015-04-30 11:48:27 +02004011
4012 /* TODO/filters: when http-buffer-request option is set or if a
4013 * rule on url_param exists, the first chunk size could be
4014 * already parsed. In that case, msg->next is after the chunk
4015 * size (including the CRLF after the size). So this case should
4016 * be handled to */
Willy Tarreaud98cf932009-12-27 22:54:55 +01004017 }
4018
Willy Tarreau7ba23542014-04-17 21:50:00 +02004019 /* Some post-connect processing might want us to refrain from starting to
4020 * forward data. Currently, the only reason for this is "balance url_param"
4021 * whichs need to parse/process the request after we've enabled forwarding.
4022 */
4023 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01004024 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +02004025 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +02004026 req->flags |= CF_WAKE_CONNECT;
Willy Tarreauba20dfc2018-05-16 11:35:05 +02004027 channel_dont_close(req); /* don't fail on early shutr */
4028 goto waiting;
Willy Tarreau7ba23542014-04-17 21:50:00 +02004029 }
4030 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
4031 }
4032
Willy Tarreau80a92c02014-03-12 10:41:13 +01004033 /* in most states, we should abort in case of early close */
4034 channel_auto_close(req);
4035
Willy Tarreauefdf0942014-04-24 20:08:57 +02004036 if (req->to_forward) {
4037 /* We can't process the buffer's contents yet */
4038 req->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01004039 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +02004040 }
4041
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01004042 if (msg->msg_state < HTTP_MSG_DONE) {
4043 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
4044 ? http_msg_forward_chunked_body(s, msg)
4045 : http_msg_forward_body(s, msg));
4046 if (!ret)
4047 goto missing_data_or_waiting;
4048 if (ret < 0)
4049 goto return_bad_req;
4050 }
Christopher Fauletd7c91962015-04-30 11:48:27 +02004051
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01004052 /* other states, DONE...TUNNEL */
4053 /* we don't want to forward closes on DONE except in tunnel mode. */
4054 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
4055 channel_dont_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +02004056
Christopher Faulet894da4c2017-07-18 11:29:07 +02004057 http_resync_states(s);
4058 if (!(req->analysers & an_bit)) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01004059 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4060 if (req->flags & CF_SHUTW) {
4061 /* request errors are most likely due to the
4062 * server aborting the transfer. */
Christopher Faulet93e02d82019-03-08 14:18:50 +01004063 goto return_srv_abort;
Willy Tarreau58bd8fd2010-09-28 14:16:41 +02004064 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01004065 if (msg->err_pos >= 0)
Willy Tarreaufd9419d2018-09-07 18:01:03 +02004066 http_capture_bad_message(sess->fe, s, msg, msg->err_state, s->be);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01004067 goto return_bad_req;
Willy Tarreaud98cf932009-12-27 22:54:55 +01004068 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01004069 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +01004070 }
4071
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01004072 /* If "option abortonclose" is set on the backend, we want to monitor
4073 * the client's connection and forward any shutdown notification to the
4074 * server, which will decide whether to close or to go on processing the
4075 * request. We only do that in tunnel mode, and not in other modes since
4076 * it can be abused to exhaust source ports. */
Christopher Faulet769d0e92019-03-22 14:23:18 +01004077 if (s->be->options & PR_O_ABRT_CLOSE) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01004078 channel_auto_read(req);
4079 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
4080 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
4081 s->si[1].flags |= SI_FL_NOLINGER;
4082 channel_auto_close(req);
4083 }
4084 else if (s->txn->meth == HTTP_METH_POST) {
4085 /* POST requests may require to read extra CRLF sent by broken
4086 * browsers and which could cause an RST to be sent upon close
4087 * on some systems (eg: Linux). */
4088 channel_auto_read(req);
4089 }
4090 return 0;
Willy Tarreaubed410e2014-04-22 08:19:34 +02004091
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01004092 missing_data_or_waiting:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +01004093 /* stop waiting for data if the input is closed before the end */
Christopher Faulet93e02d82019-03-08 14:18:50 +01004094 if (msg->msg_state < HTTP_MSG_ENDING && req->flags & CF_SHUTR)
4095 goto return_cli_abort;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +01004096
Willy Tarreauba20dfc2018-05-16 11:35:05 +02004097 waiting:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +01004098 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02004099 if (req->flags & CF_SHUTW)
Christopher Faulet93e02d82019-03-08 14:18:50 +01004100 goto return_srv_abort;
Willy Tarreau610ecce2010-01-04 21:15:02 +01004101
Willy Tarreau92aa1fa2010-08-28 18:57:20 +02004102 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02004103 * chunks even if the client has closed, so we don't want to set CF_DONTCLOSE.
Willy Tarreauff47b3f2017-12-29 16:30:31 +01004104 * And when content-length is used, we never want to let the possible
4105 * shutdown be forwarded to the other side, as the state machine will
4106 * take care of it once the client responds. It's also important to
4107 * prevent TIME_WAITs from accumulating on the backend side, and for
4108 * HTTP/2 where the last frame comes with a shutdown.
Willy Tarreau92aa1fa2010-08-28 18:57:20 +02004109 */
Willy Tarreauff47b3f2017-12-29 16:30:31 +01004110 if (msg->flags & (HTTP_MSGF_TE_CHNK|HTTP_MSGF_CNT_LEN))
Willy Tarreau8263d2b2012-08-28 00:06:31 +02004111 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +02004112
Willy Tarreau5c620922011-05-11 19:56:11 +02004113 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02004114 * what we did. So we always set the CF_EXPECT_MORE flag so that the
Willy Tarreau07293032011-05-30 18:29:28 +02004115 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +01004116 * modes are already handled by the stream sock layer. We must not do
4117 * this in content-length mode because it could present the MSG_MORE
4118 * flag with the last block of forwarded data, which would cause an
4119 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +02004120 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01004121 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02004122 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +02004123
Willy Tarreauf5c8bd62010-01-04 07:10:34 +01004124 return 0;
4125
Christopher Faulet93e02d82019-03-08 14:18:50 +01004126 return_cli_abort:
4127 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
4128 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
4129 if (objt_server(s->target))
4130 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.cli_aborts, 1);
4131 if (!(s->flags & SF_ERR_MASK))
4132 s->flags |= SF_ERR_CLICL;
4133 status = 400;
4134 goto return_error;
4135
4136 return_srv_abort:
4137 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
4138 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
4139 if (objt_server(s->target))
4140 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.srv_aborts, 1);
4141 if (!(s->flags & SF_ERR_MASK))
4142 s->flags |= SF_ERR_SRVCL;
4143 status = 502;
4144 goto return_error;
4145
4146 return_bad_req: /* let's centralize all bad requests */
Olivier Houcharda798bf52019-03-08 18:52:00 +01004147 _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1);
Willy Tarreaufb0afa72015-04-03 14:46:27 +02004148 if (sess->listener->counters)
Olivier Houcharda798bf52019-03-08 18:52:00 +01004149 _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1);
Willy Tarreaue7dff022015-04-03 01:14:29 +02004150 if (!(s->flags & SF_ERR_MASK))
Christopher Faulet93e02d82019-03-08 14:18:50 +01004151 s->flags |= SF_ERR_CLICL;
4152 status = 400;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +01004153
Christopher Faulet93e02d82019-03-08 14:18:50 +01004154 return_error:
Willy Tarreau10e61cb2017-01-04 14:51:22 +01004155 txn->req.err_state = txn->req.msg_state;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +01004156 txn->req.msg_state = HTTP_MSG_ERROR;
Christopher Faulet93e02d82019-03-08 14:18:50 +01004157 if (txn->status > 0) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +01004158 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +01004159 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +01004160 } else {
Christopher Faulet93e02d82019-03-08 14:18:50 +01004161 txn->status = status;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02004162 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +01004163 }
Christopher Faulet0184ea72017-01-05 14:06:34 +01004164 req->analysers &= AN_REQ_FLT_END;
4165 s->res.analysers &= AN_RES_FLT_END; /* we're in data phase, we want to abort both directions */
Christopher Faulet93e02d82019-03-08 14:18:50 +01004166 if (!(s->flags & SF_FINST_MASK))
4167 s->flags |= ((txn->rsp.msg_state < HTTP_MSG_ERROR) ? SF_FINST_H : SF_FINST_D);
Willy Tarreaud98cf932009-12-27 22:54:55 +01004168 return 0;
4169}
4170
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004171/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4172 * processing can continue on next analysers, or zero if it either needs more
4173 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01004174 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->res.analysers
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004175 * when it has nothing left to do, and may remove any analyser when it wants to
4176 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +02004177 */
Willy Tarreau87b09662015-04-03 00:22:06 +02004178int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +02004179{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02004180 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +02004181 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004182 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004183 struct hdr_ctx ctx;
Lukas Tribusfd9b68c2018-10-27 20:06:59 +02004184 struct connection *srv_conn;
Willy Tarreaue8e785b2009-12-26 15:34:26 +01004185 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004186 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +02004187 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +02004188
Lukas Tribusfd9b68c2018-10-27 20:06:59 +02004189 srv_conn = cs_conn(objt_cs(s->si[1].end));
4190
Christopher Faulete0768eb2018-10-03 16:38:02 +02004191 if (IS_HTX_STRM(s))
4192 return htx_wait_for_response(s, rep, an_bit);
4193
Christopher Faulet45073512018-07-20 10:16:29 +02004194 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Willy Tarreaufa7e1022008-10-19 07:30:41 +02004195 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004196 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +02004197 rep,
4198 rep->rex, rep->wex,
4199 rep->flags,
Willy Tarreauf37954d2018-06-15 18:31:02 +02004200 ci_data(rep),
Willy Tarreau3a16b2c2008-08-28 08:54:27 +02004201 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +02004202
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004203 /*
4204 * Now parse the partial (or complete) lines.
4205 * We will check the response syntax, and also join multi-line
4206 * headers. An index of all the lines will be elaborated while
4207 * parsing.
4208 *
4209 * For the parsing, we use a 28 states FSM.
4210 *
4211 * Here is the information we currently have :
Willy Tarreauf37954d2018-06-15 18:31:02 +02004212 * ci_head(rep) = beginning of response
4213 * ci_head(rep) + msg->eoh = end of processed headers / start of current one
4214 * ci_tail(rep) = end of input data
4215 * msg->eol = end of current header or line (LF or CRLF)
4216 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004217 */
4218
Willy Tarreau628c40c2014-04-24 19:11:26 +02004219 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +01004220 /* There's a protected area at the end of the buffer for rewriting
4221 * purposes. We don't want to start to parse the request if the
4222 * protected area is affected, because we may have to move processed
4223 * data later, which is much more complicated.
4224 */
Willy Tarreaud760eec2018-07-10 09:50:25 +02004225 if (c_data(rep) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +01004226 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +02004227 /* some data has still not left the buffer, wake us once that's done */
4228 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
4229 goto abort_response;
4230 channel_dont_close(rep);
4231 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +01004232 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +02004233 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +01004234 }
4235
Willy Tarreau188e2302018-06-15 11:11:53 +02004236 if (unlikely(ci_tail(rep) < c_ptr(rep, msg->next) ||
Willy Tarreauc9fa0482018-07-10 17:43:27 +02004237 ci_tail(rep) > b_wrap(&rep->buf) - global.tune.maxrewrite))
Willy Tarreau843b7cb2018-07-13 10:54:26 +02004238 channel_slow_realign(rep, trash.area);
Willy Tarreau379357a2013-06-08 12:55:46 +02004239
Willy Tarreauf37954d2018-06-15 18:31:02 +02004240 if (likely(msg->next < ci_data(rep)))
Willy Tarreaua560c212012-03-09 13:50:57 +01004241 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +01004242 }
4243
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004244 /* 1: we might have to print this header in debug mode */
4245 if (unlikely((global.mode & MODE_DEBUG) &&
4246 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +02004247 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004248 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +02004249
Willy Tarreauf37954d2018-06-15 18:31:02 +02004250 sol = ci_head(rep);
4251 eol = sol + (msg->sl.st.l ? msg->sl.st.l : ci_data(rep));
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004252 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +02004253
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004254 sol += hdr_idx_first_pos(&txn->hdr_idx);
4255 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +02004256
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004257 while (cur_idx) {
4258 eol = sol + txn->hdr_idx.v[cur_idx].len;
4259 debug_hdr("srvhdr", s, sol, eol);
4260 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4261 cur_idx = txn->hdr_idx.v[cur_idx].next;
4262 }
4263 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +02004264
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004265 /*
4266 * Now we quickly check if we have found a full valid response.
4267 * If not so, we check the FD and buffer states before leaving.
4268 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +01004269 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004270 * responses are checked first.
4271 *
4272 * Depending on whether the client is still there or not, we
4273 * may send an error response back or not. Note that normally
4274 * we should only check for HTTP status there, and check I/O
4275 * errors somewhere else.
4276 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +02004277
Willy Tarreau655dce92009-11-08 13:10:58 +01004278 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004279 /* Invalid response */
4280 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4281 /* we detected a parsing error. We want to archive this response
4282 * in the dedicated proxy area for later troubleshooting.
4283 */
4284 hdr_response_bad:
4285 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaufd9419d2018-09-07 18:01:03 +02004286 http_capture_bad_message(s->be, s, msg, msg->err_state, sess->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004287
Olivier Houcharda798bf52019-03-08 18:52:00 +01004288 _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01004289 if (objt_server(s->target)) {
Olivier Houcharda798bf52019-03-08 18:52:00 +01004290 _HA_ATOMIC_ADD(&__objt_server(s->target)->counters.failed_resp, 1);
Willy Tarreaub54c40a2018-12-02 19:28:41 +01004291 health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +01004292 }
Willy Tarreau64648412010-03-05 10:41:54 +01004293 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +02004294 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +01004295 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004296 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +01004297 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +01004298 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02004299 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004300
Willy Tarreaue7dff022015-04-03 01:14:29 +02004301 if (!(s->flags & SF_ERR_MASK))
4302 s->flags |= SF_ERR_PRXCOND;
4303 if (!(s->flags & SF_FINST_MASK))
4304 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004305
4306 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02004307 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02004308
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004309 /* too large response does not fit in buffer. */
Willy Tarreau23752332018-06-15 14:54:53 +02004310 else if (channel_full(rep, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +02004311 if (msg->err_pos < 0)
Willy Tarreauf37954d2018-06-15 18:31:02 +02004312 msg->err_pos = ci_data(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004313 goto hdr_response_bad;
4314 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +02004315
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004316 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02004317 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004318 if (msg->err_pos >= 0)
Willy Tarreaufd9419d2018-09-07 18:01:03 +02004319 http_capture_bad_message(s->be, s, msg, msg->err_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +01004320 else if (txn->flags & TX_NOT_FIRST)
4321 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +02004322
Olivier Houcharda798bf52019-03-08 18:52:00 +01004323 _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01004324 if (objt_server(s->target)) {
Olivier Houcharda798bf52019-03-08 18:52:00 +01004325 _HA_ATOMIC_ADD(&__objt_server(s->target)->counters.failed_resp, 1);
Willy Tarreaub54c40a2018-12-02 19:28:41 +01004326 health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +01004327 }
Willy Tarreau461f6622008-08-15 23:43:19 +02004328
Willy Tarreau8263d2b2012-08-28 00:06:31 +02004329 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +01004330 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004331 txn->status = 502;
Olivier Houchard522eea72017-11-03 16:27:47 +01004332
4333 /* Check to see if the server refused the early data.
4334 * If so, just send a 425
4335 */
4336 if (objt_cs(s->si[1].end)) {
4337 struct connection *conn = objt_cs(s->si[1].end)->conn;
4338
4339 if (conn->err_code == CO_ER_SSL_EARLY_FAILED)
4340 txn->status = 425;
4341 }
4342
Willy Tarreau350f4872014-11-28 14:42:25 +01004343 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +01004344 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02004345 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau816b9792009-09-15 21:25:21 +02004346
Willy Tarreaue7dff022015-04-03 01:14:29 +02004347 if (!(s->flags & SF_ERR_MASK))
4348 s->flags |= SF_ERR_SRVCL;
4349 if (!(s->flags & SF_FINST_MASK))
4350 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +02004351 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +02004352 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02004353
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +02004354 /* read timeout : return a 504 to the client. */
4355 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004356 if (msg->err_pos >= 0)
Willy Tarreaufd9419d2018-09-07 18:01:03 +02004357 http_capture_bad_message(s->be, s, msg, msg->err_state, sess->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +01004358
Olivier Houcharda798bf52019-03-08 18:52:00 +01004359 _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01004360 if (objt_server(s->target)) {
Olivier Houcharda798bf52019-03-08 18:52:00 +01004361 _HA_ATOMIC_ADD(&__objt_server(s->target)->counters.failed_resp, 1);
Willy Tarreaub54c40a2018-12-02 19:28:41 +01004362 health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +01004363 }
Willy Tarreau21d2af32008-02-14 20:25:24 +01004364
Willy Tarreau8263d2b2012-08-28 00:06:31 +02004365 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +01004366 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004367 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +01004368 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +01004369 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02004370 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau4076a152009-04-02 15:18:36 +02004371
Willy Tarreaue7dff022015-04-03 01:14:29 +02004372 if (!(s->flags & SF_ERR_MASK))
4373 s->flags |= SF_ERR_SRVTO;
4374 if (!(s->flags & SF_FINST_MASK))
4375 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004376 return 0;
4377 }
Willy Tarreaua7c52762008-08-16 18:40:18 +02004378
Willy Tarreauf003d372012-11-26 13:35:37 +01004379 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01004380 else if ((rep->flags & CF_SHUTR) && ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
Olivier Houcharda798bf52019-03-08 18:52:00 +01004381 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
4382 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
Willy Tarreauf003d372012-11-26 13:35:37 +01004383 if (objt_server(s->target))
Olivier Houcharda798bf52019-03-08 18:52:00 +01004384 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.cli_aborts, 1);
Willy Tarreauf003d372012-11-26 13:35:37 +01004385
Christopher Faulet0184ea72017-01-05 14:06:34 +01004386 rep->analysers &= AN_RES_FLT_END;
Willy Tarreauf003d372012-11-26 13:35:37 +01004387 channel_auto_close(rep);
4388
4389 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +01004390 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02004391 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreauf003d372012-11-26 13:35:37 +01004392
Willy Tarreaue7dff022015-04-03 01:14:29 +02004393 if (!(s->flags & SF_ERR_MASK))
4394 s->flags |= SF_ERR_CLICL;
4395 if (!(s->flags & SF_FINST_MASK))
4396 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +01004397
Willy Tarreau87b09662015-04-03 00:22:06 +02004398 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +01004399 return 0;
4400 }
4401
Willy Tarreau3b8c08a2011-09-02 20:16:24 +02004402 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02004403 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +02004404 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaufd9419d2018-09-07 18:01:03 +02004405 http_capture_bad_message(s->be, s, msg, msg->err_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +01004406 else if (txn->flags & TX_NOT_FIRST)
4407 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +01004408
Olivier Houcharda798bf52019-03-08 18:52:00 +01004409 _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01004410 if (objt_server(s->target)) {
Olivier Houcharda798bf52019-03-08 18:52:00 +01004411 _HA_ATOMIC_ADD(&__objt_server(s->target)->counters.failed_resp, 1);
Willy Tarreaub54c40a2018-12-02 19:28:41 +01004412 health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +01004413 }
Willy Tarreau21d2af32008-02-14 20:25:24 +01004414
Willy Tarreau8263d2b2012-08-28 00:06:31 +02004415 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +01004416 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004417 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +01004418 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +01004419 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02004420 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau21d2af32008-02-14 20:25:24 +01004421
Willy Tarreaue7dff022015-04-03 01:14:29 +02004422 if (!(s->flags & SF_ERR_MASK))
4423 s->flags |= SF_ERR_SRVCL;
4424 if (!(s->flags & SF_FINST_MASK))
4425 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004426 return 0;
4427 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +02004428
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004429 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02004430 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004431 if (msg->err_pos >= 0)
Willy Tarreaufd9419d2018-09-07 18:01:03 +02004432 http_capture_bad_message(s->be, s, msg, msg->err_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +01004433 else if (txn->flags & TX_NOT_FIRST)
4434 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +02004435
Olivier Houcharda798bf52019-03-08 18:52:00 +01004436 _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Christopher Faulet0184ea72017-01-05 14:06:34 +01004437 rep->analysers &= AN_RES_FLT_END;
Willy Tarreau8263d2b2012-08-28 00:06:31 +02004438 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004439
Willy Tarreaue7dff022015-04-03 01:14:29 +02004440 if (!(s->flags & SF_ERR_MASK))
4441 s->flags |= SF_ERR_CLICL;
4442 if (!(s->flags & SF_FINST_MASK))
4443 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004444
Willy Tarreau87b09662015-04-03 00:22:06 +02004445 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004446 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +02004447 }
Willy Tarreau21d2af32008-02-14 20:25:24 +01004448
Willy Tarreau8263d2b2012-08-28 00:06:31 +02004449 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +01004450 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004451 return 0;
4452 }
4453
4454 /* More interesting part now : we know that we have a complete
4455 * response which at least looks like HTTP. We have an indicator
4456 * of each header's length, so we can parse them quickly.
4457 */
4458
4459 if (unlikely(msg->err_pos >= 0))
Willy Tarreaufd9419d2018-09-07 18:01:03 +02004460 http_capture_bad_message(s->be, s, msg, msg->err_state, sess->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004461
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004462 /*
4463 * 1: get the status code
4464 */
Willy Tarreauf37954d2018-06-15 18:31:02 +02004465 n = ci_head(rep)[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004466 if (n < 1 || n > 5)
4467 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +02004468 /* when the client triggers a 4xx from the server, it's most often due
4469 * to a missing object or permission. These events should be tracked
4470 * because if they happen often, it may indicate a brute force or a
4471 * vulnerability scan.
4472 */
4473 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +02004474 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +02004475
Willy Tarreau3fdb3662012-11-12 00:42:33 +01004476 if (objt_server(s->target))
Olivier Houcharda798bf52019-03-08 18:52:00 +01004477 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.p.http.rsp[n], 1);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004478
Willy Tarreau91852eb2015-05-01 13:26:00 +02004479 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
4480 * exactly one digit "." one digit. This check may be disabled using
4481 * option accept-invalid-http-response.
4482 */
4483 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
4484 if (msg->sl.st.v_l != 8) {
4485 msg->err_pos = 0;
4486 goto hdr_response_bad;
4487 }
4488
Willy Tarreauf37954d2018-06-15 18:31:02 +02004489 if (ci_head(rep)[4] != '/' ||
4490 !isdigit((unsigned char)ci_head(rep)[5]) ||
4491 ci_head(rep)[6] != '.' ||
4492 !isdigit((unsigned char)ci_head(rep)[7])) {
Willy Tarreau91852eb2015-05-01 13:26:00 +02004493 msg->err_pos = 4;
4494 goto hdr_response_bad;
4495 }
4496 }
4497
Willy Tarreau5b154472009-12-21 20:11:07 +01004498 /* check if the response is HTTP/1.1 or above */
4499 if ((msg->sl.st.v_l == 8) &&
Willy Tarreauf37954d2018-06-15 18:31:02 +02004500 ((ci_head(rep)[5] > '1') ||
4501 ((ci_head(rep)[5] == '1') && (ci_head(rep)[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01004502 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +01004503
4504 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +01004505 txn->flags &= ~(TX_HDR_CONN_PRS|TX_HDR_CONN_CLO|TX_HDR_CONN_KAL|TX_HDR_CONN_UPG|TX_CON_CLO_SET|TX_CON_KAL_SET);
Willy Tarreau5b154472009-12-21 20:11:07 +01004506
Willy Tarreaue8e785b2009-12-26 15:34:26 +01004507 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01004508 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +01004509
Willy Tarreauf37954d2018-06-15 18:31:02 +02004510 txn->status = strl2ui(ci_head(rep) + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004511
Willy Tarreau39650402010-03-15 19:44:39 +01004512 /* Adjust server's health based on status code. Note: status codes 501
4513 * and 505 are triggered on demand by client request, so we must not
4514 * count them as server failures.
4515 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +01004516 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +02004517 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreaub54c40a2018-12-02 19:28:41 +01004518 health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +02004519 else
Willy Tarreaub54c40a2018-12-02 19:28:41 +01004520 health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +02004521 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +01004522
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004523 /*
Willy Tarreaua14ad722017-07-07 11:36:32 +02004524 * We may be facing a 100-continue response, or any other informational
4525 * 1xx response which is non-final, in which case this is not the right
4526 * response, and we're waiting for the next one. Let's allow this response
4527 * to go to the client and wait for the next one. There's an exception for
4528 * 101 which is used later in the code to switch protocols.
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004529 */
Willy Tarreaua14ad722017-07-07 11:36:32 +02004530 if (txn->status < 200 &&
4531 (txn->status == 100 || txn->status >= 102)) {
Willy Tarreau628c40c2014-04-24 19:11:26 +02004532 hdr_idx_init(&txn->hdr_idx);
4533 msg->next -= channel_forward(rep, msg->next);
4534 msg->msg_state = HTTP_MSG_RPBEFORE;
4535 txn->status = 0;
4536 s->logs.t_data = -1; /* was not a response yet */
Christopher Faulet3e344292015-11-24 16:24:13 +01004537 FLT_STRM_CB(s, flt_http_reset(s, msg));
Willy Tarreau628c40c2014-04-24 19:11:26 +02004538 goto next_one;
Willy Tarreaua14ad722017-07-07 11:36:32 +02004539 }
Willy Tarreau628c40c2014-04-24 19:11:26 +02004540
Willy Tarreaua14ad722017-07-07 11:36:32 +02004541 /*
4542 * 2: check for cacheability.
4543 */
4544
4545 switch (txn->status) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004546 case 200:
4547 case 203:
Willy Tarreauc55ddce2017-12-21 11:41:38 +01004548 case 204:
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004549 case 206:
4550 case 300:
4551 case 301:
Willy Tarreauc55ddce2017-12-21 11:41:38 +01004552 case 404:
4553 case 405:
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004554 case 410:
Willy Tarreauc55ddce2017-12-21 11:41:38 +01004555 case 414:
4556 case 501:
Willy Tarreau83ece462017-12-21 15:13:09 +01004557 break;
4558 default:
Willy Tarreauc55ddce2017-12-21 11:41:38 +01004559 /* RFC7231#6.1:
4560 * Responses with status codes that are defined as
4561 * cacheable by default (e.g., 200, 203, 204, 206,
4562 * 300, 301, 404, 405, 410, 414, and 501 in this
4563 * specification) can be reused by a cache with
4564 * heuristic expiration unless otherwise indicated
4565 * by the method definition or explicit cache
4566 * controls [RFC7234]; all other status codes are
4567 * not cacheable by default.
Willy Tarreauf5483bf2008-08-14 18:35:40 +02004568 */
Willy Tarreau83ece462017-12-21 15:13:09 +01004569 txn->flags &= ~(TX_CACHEABLE | TX_CACHE_COOK);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004570 break;
4571 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +02004572
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004573 /*
4574 * 3: we may need to capture headers
4575 */
4576 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +02004577 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Christopher Faulet10079f52018-10-03 15:17:28 +02004578 http_capture_headers(ci_head(rep), &txn->hdr_idx,
4579 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +02004580
Willy Tarreau557f1992015-05-01 10:05:17 +02004581 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
4582 * by RFC7230#3.3.3 :
4583 *
4584 * The length of a message body is determined by one of the following
4585 * (in order of precedence):
4586 *
Christopher Fauletd1cd2092016-11-28 10:14:03 +01004587 * 1. Any 2xx (Successful) response to a CONNECT request implies that
4588 * the connection will become a tunnel immediately after the empty
4589 * line that concludes the header fields. A client MUST ignore
4590 * any Content-Length or Transfer-Encoding header fields received
4591 * in such a message. Any 101 response (Switching Protocols) is
4592 * managed in the same manner.
4593 *
4594 * 2. Any response to a HEAD request and any response with a 1xx
Willy Tarreau557f1992015-05-01 10:05:17 +02004595 * (Informational), 204 (No Content), or 304 (Not Modified) status
4596 * code is always terminated by the first empty line after the
4597 * header fields, regardless of the header fields present in the
4598 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004599 *
Willy Tarreau557f1992015-05-01 10:05:17 +02004600 * 3. If a Transfer-Encoding header field is present and the chunked
4601 * transfer coding (Section 4.1) is the final encoding, the message
4602 * body length is determined by reading and decoding the chunked
4603 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +01004604 *
Willy Tarreau557f1992015-05-01 10:05:17 +02004605 * If a Transfer-Encoding header field is present in a response and
4606 * the chunked transfer coding is not the final encoding, the
4607 * message body length is determined by reading the connection until
4608 * it is closed by the server. If a Transfer-Encoding header field
4609 * is present in a request and the chunked transfer coding is not
4610 * the final encoding, the message body length cannot be determined
4611 * reliably; the server MUST respond with the 400 (Bad Request)
4612 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +01004613 *
Willy Tarreau557f1992015-05-01 10:05:17 +02004614 * If a message is received with both a Transfer-Encoding and a
4615 * Content-Length header field, the Transfer-Encoding overrides the
4616 * Content-Length. Such a message might indicate an attempt to
4617 * perform request smuggling (Section 9.5) or response splitting
4618 * (Section 9.4) and ought to be handled as an error. A sender MUST
4619 * remove the received Content-Length field prior to forwarding such
4620 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +01004621 *
Willy Tarreau557f1992015-05-01 10:05:17 +02004622 * 4. If a message is received without Transfer-Encoding and with
4623 * either multiple Content-Length header fields having differing
4624 * field-values or a single Content-Length header field having an
4625 * invalid value, then the message framing is invalid and the
4626 * recipient MUST treat it as an unrecoverable error. If this is a
4627 * request message, the server MUST respond with a 400 (Bad Request)
4628 * status code and then close the connection. If this is a response
4629 * message received by a proxy, the proxy MUST close the connection
4630 * to the server, discard the received response, and send a 502 (Bad
4631 * Gateway) response to the client. If this is a response message
4632 * received by a user agent, the user agent MUST close the
4633 * connection to the server and discard the received response.
4634 *
4635 * 5. If a valid Content-Length header field is present without
4636 * Transfer-Encoding, its decimal value defines the expected message
4637 * body length in octets. If the sender closes the connection or
4638 * the recipient times out before the indicated number of octets are
4639 * received, the recipient MUST consider the message to be
4640 * incomplete and close the connection.
4641 *
4642 * 6. If this is a request message and none of the above are true, then
4643 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +01004644 *
Willy Tarreau557f1992015-05-01 10:05:17 +02004645 * 7. Otherwise, this is a response message without a declared message
4646 * body length, so the message body length is determined by the
4647 * number of octets received prior to the server closing the
4648 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004649 */
4650
4651 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +01004652 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +01004653 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004654 * FIXME: should we parse anyway and return an error on chunked encoding ?
4655 */
Christopher Fauletd1cd2092016-11-28 10:14:03 +01004656 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
4657 txn->status == 101)) {
4658 /* Either we've established an explicit tunnel, or we're
4659 * switching the protocol. In both cases, we're very unlikely
4660 * to understand the next protocols. We have to switch to tunnel
4661 * mode, so that we transfer the request and responses then let
4662 * this protocol pass unmodified. When we later implement specific
4663 * parsers for such protocols, we'll want to check the Upgrade
4664 * header which contains information about that protocol for
4665 * responses with status 101 (eg: see RFC2817 about TLS).
4666 */
4667 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
4668 msg->flags |= HTTP_MSGF_XFER_LEN;
4669 goto end;
4670 }
4671
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004672 if (txn->meth == HTTP_METH_HEAD ||
4673 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +01004674 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01004675 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +01004676 goto skip_content_length;
4677 }
4678
Willy Tarreaue8e785b2009-12-26 15:34:26 +01004679 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004680 ctx.idx = 0;
Willy Tarreauf37954d2018-06-15 18:31:02 +02004681 while (http_find_header2("Transfer-Encoding", 17, ci_head(rep), &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +01004682 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01004683 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
4684 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +01004685 /* bad transfer-encoding (chunked followed by something else) */
4686 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01004687 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +01004688 break;
4689 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004690 }
4691
Willy Tarreau1c913912015-04-30 10:57:51 +02004692 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004693 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +02004694 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02004695 while (http_find_header2("Content-Length", 14, ci_head(rep), &txn->hdr_idx, &ctx))
Willy Tarreau1c913912015-04-30 10:57:51 +02004696 http_remove_header2(msg, &txn->hdr_idx, &ctx);
4697 }
Willy Tarreauf37954d2018-06-15 18:31:02 +02004698 else while (http_find_header2("Content-Length", 14, ci_head(rep), &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004699 signed long long cl;
4700
Willy Tarreauad14f752011-09-02 20:33:27 +02004701 if (!ctx.vlen) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02004702 msg->err_pos = ctx.line + ctx.val - ci_head(rep);
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004703 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +02004704 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004705
Willy Tarreauad14f752011-09-02 20:33:27 +02004706 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02004707 msg->err_pos = ctx.line + ctx.val - ci_head(rep);
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004708 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +02004709 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004710
Willy Tarreauad14f752011-09-02 20:33:27 +02004711 if (cl < 0) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02004712 msg->err_pos = ctx.line + ctx.val - ci_head(rep);
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004713 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +02004714 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004715
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01004716 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02004717 msg->err_pos = ctx.line + ctx.val - ci_head(rep);
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004718 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +02004719 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004720
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01004721 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +01004722 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +02004723 }
4724
Lukas Tribusfd9b68c2018-10-27 20:06:59 +02004725 /* check for NTML authentication headers in 401 (WWW-Authenticate) and
4726 * 407 (Proxy-Authenticate) responses and set the connection to private
4727 */
4728 if (srv_conn && txn->status == 401) {
4729 /* check for Negotiate/NTLM WWW-Authenticate headers */
4730 ctx.idx = 0;
4731 while (http_find_header2("WWW-Authenticate", 16, ci_head(rep), &txn->hdr_idx, &ctx)) {
4732 if ((ctx.vlen >= 9 && word_match(ctx.line + ctx.val, ctx.vlen, "Negotiate", 9)) ||
4733 (ctx.vlen >= 4 && word_match(ctx.line + ctx.val, ctx.vlen, "NTLM", 4)))
4734 srv_conn->flags |= CO_FL_PRIVATE;
4735 }
4736 } else if (srv_conn && txn->status == 407) {
4737 /* check for Negotiate/NTLM Proxy-Authenticate headers */
4738 ctx.idx = 0;
4739 while (http_find_header2("Proxy-Authenticate", 18, ci_head(rep), &txn->hdr_idx, &ctx)) {
4740 if ((ctx.vlen >= 9 && word_match(ctx.line + ctx.val, ctx.vlen, "Negotiate", 9)) ||
4741 (ctx.vlen >= 4 && word_match(ctx.line + ctx.val, ctx.vlen, "NTLM", 4)))
4742 srv_conn->flags |= CO_FL_PRIVATE;
4743 }
4744 }
4745
Christopher Fauletd1cd2092016-11-28 10:14:03 +01004746 skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +01004747 /* Now we have to check if we need to modify the Connection header.
4748 * This is more difficult on the response than it is on the request,
4749 * because we can have two different HTTP versions and we don't know
4750 * how the client will interprete a response. For instance, let's say
4751 * that the client sends a keep-alive request in HTTP/1.0 and gets an
4752 * HTTP/1.1 response without any header. Maybe it will bound itself to
4753 * HTTP/1.0 because it only knows about it, and will consider the lack
4754 * of header as a close, or maybe it knows HTTP/1.1 and can consider
4755 * the lack of header as a keep-alive. Thus we will use two flags
4756 * indicating how a request MAY be understood by the client. In case
4757 * of multiple possibilities, we'll fix the header to be explicit. If
4758 * ambiguous cases such as both close and keepalive are seen, then we
4759 * will fall back to explicit close. Note that we won't take risks with
4760 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +01004761 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +01004762 */
Christopher Fauletd1cd2092016-11-28 10:14:03 +01004763 if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
Christopher Faulet315b39c2018-09-21 16:26:19 +02004764 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
Willy Tarreau60466522010-01-18 19:08:45 +01004765 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +01004766
Willy Tarreau60466522010-01-18 19:08:45 +01004767 /* on unknown transfer length, we must close */
Christopher Faulet315b39c2018-09-21 16:26:19 +02004768 if (!(msg->flags & HTTP_MSGF_XFER_LEN))
Willy Tarreau60466522010-01-18 19:08:45 +01004769 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +01004770
Willy Tarreau60466522010-01-18 19:08:45 +01004771 /* now adjust header transformations depending on current state */
Christopher Faulet315b39c2018-09-21 16:26:19 +02004772 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
Willy Tarreau60466522010-01-18 19:08:45 +01004773 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01004774 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +01004775 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +01004776 }
Willy Tarreau60466522010-01-18 19:08:45 +01004777 else { /* SCL / KAL */
4778 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01004779 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +01004780 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +01004781 }
Willy Tarreau5b154472009-12-21 20:11:07 +01004782
Willy Tarreau60466522010-01-18 19:08:45 +01004783 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +01004784 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +01004785
Willy Tarreau60466522010-01-18 19:08:45 +01004786 /* Some keep-alive responses are converted to Server-close if
4787 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +01004788 */
Willy Tarreau60466522010-01-18 19:08:45 +01004789 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
4790 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +01004791 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +01004792 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +01004793 }
Willy Tarreau5b154472009-12-21 20:11:07 +01004794 }
4795
Christopher Fauletd1cd2092016-11-28 10:14:03 +01004796 end:
Willy Tarreau7959a552013-09-23 16:44:27 +02004797 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02004798 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +02004799
Willy Tarreauf118d9f2014-04-24 18:26:08 +02004800 /* end of job, return OK */
4801 rep->analysers &= ~an_bit;
4802 rep->analyse_exp = TICK_ETERNITY;
4803 channel_auto_close(rep);
4804 return 1;
4805
4806 abort_keep_alive:
4807 /* A keep-alive request to the server failed on a network error.
4808 * The client is required to retry. We need to close without returning
4809 * any other information so that the client retries.
4810 */
4811 txn->status = 0;
Christopher Faulet0184ea72017-01-05 14:06:34 +01004812 rep->analysers &= AN_RES_FLT_END;
4813 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreauf118d9f2014-04-24 18:26:08 +02004814 channel_auto_close(rep);
4815 s->logs.logwait = 0;
4816 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01004817 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +01004818 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +01004819 http_reply_and_close(s, txn->status, NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +02004820 return 0;
4821}
4822
4823/* This function performs all the processing enabled for the current response.
4824 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01004825 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +02004826 * other functions. It works like process_request (see indications above).
4827 */
Willy Tarreau87b09662015-04-03 00:22:06 +02004828int http_process_res_common(struct stream *s, struct channel *rep, int an_bit, struct proxy *px)
Willy Tarreauf118d9f2014-04-24 18:26:08 +02004829{
Willy Tarreaufb0afa72015-04-03 14:46:27 +02004830 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +02004831 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +02004832 struct http_msg *msg = &txn->rsp;
4833 struct proxy *cur_proxy;
4834 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +01004835 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +02004836
Christopher Faulete0768eb2018-10-03 16:38:02 +02004837 if (IS_HTX_STRM(s))
4838 return htx_process_res_common(s, rep, an_bit, px);
4839
Christopher Faulet45073512018-07-20 10:16:29 +02004840 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Willy Tarreauf118d9f2014-04-24 18:26:08 +02004841 now_ms, __FUNCTION__,
4842 s,
4843 rep,
4844 rep->rex, rep->wex,
4845 rep->flags,
Willy Tarreauf37954d2018-06-15 18:31:02 +02004846 ci_data(rep),
Willy Tarreauf118d9f2014-04-24 18:26:08 +02004847 rep->analysers);
4848
4849 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
4850 return 0;
4851
Willy Tarreau70730dd2014-04-24 18:06:27 +02004852 /* The stats applet needs to adjust the Connection header but we don't
4853 * apply any filter there.
4854 */
Willy Tarreau612adb82015-03-10 15:25:54 +01004855 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
4856 rep->analysers &= ~an_bit;
4857 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +02004858 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +01004859 }
Willy Tarreau70730dd2014-04-24 18:06:27 +02004860
Willy Tarreau58975672014-04-24 21:13:57 +02004861 /*
4862 * We will have to evaluate the filters.
4863 * As opposed to version 1.2, now they will be evaluated in the
4864 * filters order and not in the header order. This means that
4865 * each filter has to be validated among all headers.
4866 *
4867 * Filters are tried with ->be first, then with ->fe if it is
4868 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01004869 *
4870 * Maybe we are in resume condiion. In this case I choose the
4871 * "struct proxy" which contains the rule list matching the resume
4872 * pointer. If none of theses "struct proxy" match, I initialise
4873 * the process with the first one.
4874 *
4875 * In fact, I check only correspondance betwwen the current list
4876 * pointer and the ->fe rule list. If it doesn't match, I initialize
4877 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +02004878 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02004879 if (s->current_rule_list == &sess->fe->http_res_rules)
4880 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01004881 else
4882 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +02004883 while (1) {
4884 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +02004885
Willy Tarreau58975672014-04-24 21:13:57 +02004886 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +02004887 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +02004888 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +02004889
Willy Tarreau51d861a2015-05-22 17:30:48 +02004890 if (ret == HTTP_RULE_RES_BADREQ)
4891 goto return_srv_prx_502;
4892
4893 if (ret == HTTP_RULE_RES_DONE) {
4894 rep->analysers &= ~an_bit;
4895 rep->analyse_exp = TICK_ETERNITY;
4896 return 1;
4897 }
4898 }
4899
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01004900 /* we need to be called again. */
4901 if (ret == HTTP_RULE_RES_YIELD) {
4902 channel_dont_close(rep);
4903 return 0;
4904 }
4905
Willy Tarreau58975672014-04-24 21:13:57 +02004906 /* try headers filters */
4907 if (rule_set->rsp_exp != NULL) {
4908 if (apply_filters_to_response(s, rep, rule_set) < 0) {
4909 return_bad_resp:
4910 if (objt_server(s->target)) {
Olivier Houcharda798bf52019-03-08 18:52:00 +01004911 _HA_ATOMIC_ADD(&__objt_server(s->target)->counters.failed_resp, 1);
Willy Tarreaub54c40a2018-12-02 19:28:41 +01004912 health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +01004913 }
Olivier Houcharda798bf52019-03-08 18:52:00 +01004914 _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
Willy Tarreau58975672014-04-24 21:13:57 +02004915 return_srv_prx_502:
Christopher Faulet0184ea72017-01-05 14:06:34 +01004916 rep->analysers &= AN_RES_FLT_END;
Willy Tarreau58975672014-04-24 21:13:57 +02004917 txn->status = 502;
4918 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +01004919 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +01004920 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +02004921 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaue7dff022015-04-03 01:14:29 +02004922 if (!(s->flags & SF_ERR_MASK))
4923 s->flags |= SF_ERR_PRXCOND;
4924 if (!(s->flags & SF_FINST_MASK))
4925 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +02004926 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +02004927 }
Willy Tarreau58975672014-04-24 21:13:57 +02004928 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +02004929
Willy Tarreau58975672014-04-24 21:13:57 +02004930 /* has the response been denied ? */
4931 if (txn->flags & TX_SVDENY) {
4932 if (objt_server(s->target))
Olivier Houcharda798bf52019-03-08 18:52:00 +01004933 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_secu, 1);
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +02004934
Olivier Houcharda798bf52019-03-08 18:52:00 +01004935 _HA_ATOMIC_ADD(&s->be->be_counters.denied_resp, 1);
4936 _HA_ATOMIC_ADD(&sess->fe->fe_counters.denied_resp, 1);
Willy Tarreaufb0afa72015-04-03 14:46:27 +02004937 if (sess->listener->counters)
Olivier Houcharda798bf52019-03-08 18:52:00 +01004938 _HA_ATOMIC_ADD(&sess->listener->counters->denied_resp, 1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02004939
Willy Tarreau58975672014-04-24 21:13:57 +02004940 goto return_srv_prx_502;
4941 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +02004942
Willy Tarreau58975672014-04-24 21:13:57 +02004943 /* add response headers from the rule sets in the same order */
4944 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +02004945 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +02004946 break;
Willy Tarreau58975672014-04-24 21:13:57 +02004947 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02004948 int ret = acl_exec_cond(wl->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Willy Tarreau58975672014-04-24 21:13:57 +02004949 ret = acl_pass(ret);
4950 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4951 ret = !ret;
4952 if (!ret)
4953 continue;
4954 }
Christopher Faulet10079f52018-10-03 15:17:28 +02004955 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, wl->s, strlen(wl->s)) < 0))
Willy Tarreau58975672014-04-24 21:13:57 +02004956 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +02004957 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02004958
Willy Tarreau58975672014-04-24 21:13:57 +02004959 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02004960 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +02004961 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02004962 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +02004963 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +01004964
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01004965 /* After this point, this anayzer can't return yield, so we can
4966 * remove the bit corresponding to this analyzer from the list.
4967 *
4968 * Note that the intermediate returns and goto found previously
4969 * reset the analyzers.
4970 */
4971 rep->analysers &= ~an_bit;
4972 rep->analyse_exp = TICK_ETERNITY;
4973
Willy Tarreau58975672014-04-24 21:13:57 +02004974 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +02004975 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +02004976 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +01004977
Willy Tarreau58975672014-04-24 21:13:57 +02004978 /*
4979 * Now check for a server cookie.
4980 */
Willy Tarreau53a09d52015-08-10 18:59:40 +02004981 if (s->be->cookie_name || sess->fe->capture_name || (s->be->options & PR_O_CHK_CACHE))
Willy Tarreau58975672014-04-24 21:13:57 +02004982 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +02004983
Willy Tarreau58975672014-04-24 21:13:57 +02004984 /*
4985 * Check for cache-control or pragma headers if required.
4986 */
Willy Tarreau12b32f22017-12-21 16:08:09 +01004987 if ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC))
Willy Tarreau58975672014-04-24 21:13:57 +02004988 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +02004989
Willy Tarreau58975672014-04-24 21:13:57 +02004990 /*
4991 * Add server cookie in the response if needed
4992 */
4993 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
4994 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02004995 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +02004996 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
4997 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
4998 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
4999 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
5000 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +02005001 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +02005002 /* the server is known, it's not the one the client requested, or the
5003 * cookie's last seen date needs to be refreshed. We have to
5004 * insert a set-cookie here, except if we want to insert only on POST
5005 * requests and this one isn't. Note that servers which don't have cookies
5006 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +01005007 */
Willy Tarreau58975672014-04-24 21:13:57 +02005008 if (!objt_server(s->target)->cookie) {
5009 chunk_printf(&trash,
5010 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5011 s->be->cookie_name);
5012 }
5013 else {
5014 chunk_printf(&trash, "Set-Cookie: %s=%s", s->be->cookie_name, objt_server(s->target)->cookie);
Willy Tarreaua15645d2007-03-18 16:22:39 +01005015
Willy Tarreau58975672014-04-24 21:13:57 +02005016 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
5017 /* emit last_date, which is mandatory */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005018 trash.area[trash.data++] = COOKIE_DELIM_DATE;
5019 s30tob64((date.tv_sec+3) >> 2,
5020 trash.area + trash.data);
5021 trash.data += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +02005022
Willy Tarreau58975672014-04-24 21:13:57 +02005023 if (s->be->cookie_maxlife) {
5024 /* emit first_date, which is either the original one or
5025 * the current date.
5026 */
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005027 trash.area[trash.data++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +02005028 s30tob64(txn->cookie_first_date ?
5029 txn->cookie_first_date >> 2 :
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005030 (date.tv_sec+3) >> 2,
5031 trash.area + trash.data);
5032 trash.data += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +02005033 }
Willy Tarreauef4f3912010-10-07 21:00:29 +02005034 }
Willy Tarreau58975672014-04-24 21:13:57 +02005035 chunk_appendf(&trash, "; path=/");
5036 }
Willy Tarreau4992dd22012-05-31 21:02:17 +02005037
Willy Tarreau58975672014-04-24 21:13:57 +02005038 if (s->be->cookie_domain)
5039 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +02005040
Willy Tarreau58975672014-04-24 21:13:57 +02005041 if (s->be->ck_opts & PR_CK_HTTPONLY)
5042 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +02005043
Willy Tarreau58975672014-04-24 21:13:57 +02005044 if (s->be->ck_opts & PR_CK_SECURE)
5045 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +02005046
Willy Tarreau843b7cb2018-07-13 10:54:26 +02005047 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.area, trash.data) < 0))
Willy Tarreau58975672014-04-24 21:13:57 +02005048 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +02005049
Willy Tarreau58975672014-04-24 21:13:57 +02005050 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaub05e48a2018-09-20 11:12:58 +02005051 if (__objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +02005052 /* the server did not change, only the date was updated */
5053 txn->flags |= TX_SCK_UPDATED;
5054 else
5055 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +02005056
Willy Tarreau58975672014-04-24 21:13:57 +02005057 /* Here, we will tell an eventual cache on the client side that we don't
5058 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5059 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5060 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +02005061 */
Willy Tarreau58975672014-04-24 21:13:57 +02005062 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +02005063
Willy Tarreau58975672014-04-24 21:13:57 +02005064 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +02005065
Willy Tarreau58975672014-04-24 21:13:57 +02005066 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
5067 "Cache-control: private", 22) < 0))
5068 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +02005069 }
Willy Tarreau58975672014-04-24 21:13:57 +02005070 }
Willy Tarreaua15645d2007-03-18 16:22:39 +01005071
Willy Tarreau58975672014-04-24 21:13:57 +02005072 /*
5073 * Check if result will be cacheable with a cookie.
5074 * We'll block the response if security checks have caught
5075 * nasty things such as a cacheable cookie.
5076 */
5077 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5078 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
5079 (s->be->options & PR_O_CHK_CACHE)) {
5080 /* we're in presence of a cacheable response containing
5081 * a set-cookie header. We'll block it as requested by
5082 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +01005083 */
Willy Tarreau58975672014-04-24 21:13:57 +02005084 if (objt_server(s->target))
Olivier Houcharda798bf52019-03-08 18:52:00 +01005085 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_secu, 1);
Willy Tarreau60466522010-01-18 19:08:45 +01005086
Olivier Houcharda798bf52019-03-08 18:52:00 +01005087 _HA_ATOMIC_ADD(&s->be->be_counters.denied_resp, 1);
5088 _HA_ATOMIC_ADD(&sess->fe->fe_counters.denied_resp, 1);
Willy Tarreaufb0afa72015-04-03 14:46:27 +02005089 if (sess->listener->counters)
Olivier Houcharda798bf52019-03-08 18:52:00 +01005090 _HA_ATOMIC_ADD(&sess->listener->counters->denied_resp, 1);
Willy Tarreaua15645d2007-03-18 16:22:39 +01005091
Christopher Faulet767a84b2017-11-24 16:50:31 +01005092 ha_alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
5093 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
Willy Tarreau58975672014-04-24 21:13:57 +02005094 send_log(s->be, LOG_ALERT,
5095 "Blocking cacheable cookie in response from instance %s, server %s.\n",
5096 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
5097 goto return_srv_prx_502;
5098 }
Willy Tarreau03945942009-12-22 16:50:27 +01005099
Willy Tarreau70730dd2014-04-24 18:06:27 +02005100 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +02005101 /*
5102 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
5103 * If an "Upgrade" token is found, the header is left untouched in order
5104 * not to have to deal with some client bugs : some of them fail an upgrade
Willy Tarreauce730de2014-09-16 10:40:38 +02005105 * if anything but "Upgrade" is present in the Connection header. We don't
5106 * want to touch any 101 response either since it's switching to another
5107 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +02005108 */
Willy Tarreauce730de2014-09-16 10:40:38 +02005109 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Christopher Faulet315b39c2018-09-21 16:26:19 +02005110 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
Willy Tarreau58975672014-04-24 21:13:57 +02005111 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02005112
Willy Tarreau58975672014-04-24 21:13:57 +02005113 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5114 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5115 /* we want a keep-alive response here. Keep-alive header
5116 * required if either side is not 1.1.
5117 */
5118 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
5119 want_flags |= TX_CON_KAL_SET;
5120 }
Christopher Faulet315b39c2018-09-21 16:26:19 +02005121 else { /* CLO */
Willy Tarreau58975672014-04-24 21:13:57 +02005122 /* we want a close response here. Close header required if
5123 * the server is 1.1, regardless of the client.
5124 */
5125 if (msg->flags & HTTP_MSGF_VER_11)
5126 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +02005127 }
Willy Tarreaua15645d2007-03-18 16:22:39 +01005128
Willy Tarreau58975672014-04-24 21:13:57 +02005129 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
5130 http_change_connection_header(txn, msg, want_flags);
5131 }
5132
5133 skip_header_mangling:
Christopher Faulet69744d92017-03-30 10:54:35 +02005134 /* Always enter in the body analyzer */
5135 rep->analysers &= ~AN_RES_FLT_XFER_DATA;
5136 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +01005137
Willy Tarreau58975672014-04-24 21:13:57 +02005138 /* if the user wants to log as soon as possible, without counting
5139 * bytes from the server, then this is the right moment. We have
5140 * to temporarily assign bytes_out to log what we currently have.
5141 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02005142 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +02005143 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
5144 s->logs.bytes_out = txn->rsp.eoh;
5145 s->do_log(s);
5146 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +02005147 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +01005148 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +02005149}
Willy Tarreaua15645d2007-03-18 16:22:39 +01005150
Willy Tarreaud98cf932009-12-27 22:54:55 +01005151/* This function is an analyser which forwards response body (including chunk
5152 * sizes if any). It is called as soon as we must forward, even if we forward
5153 * zero byte. The only situation where it must not be called is when we're in
5154 * tunnel mode and we want to forward till the close. It's used both to forward
5155 * remaining data and to resync after end of body. It expects the msg_state to
5156 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
Willy Tarreau87b09662015-04-03 00:22:06 +02005157 * read more data, or 1 once we can go on with next request or end the stream.
Willy Tarreaud3510212014-04-21 11:24:13 +02005158 *
5159 * It is capable of compressing response data both in content-length mode and
5160 * in chunked mode. The state machines follows different flows depending on
5161 * whether content-length and chunked modes are used, since there are no
5162 * trailers in content-length :
5163 *
5164 * chk-mode cl-mode
5165 * ,----- BODY -----.
5166 * / \
5167 * V size > 0 V chk-mode
5168 * .--> SIZE -------------> DATA -------------> CRLF
5169 * | | size == 0 | last byte |
5170 * | v final crlf v inspected |
5171 * | TRAILERS -----------> DONE |
5172 * | |
5173 * `----------------------------------------------'
5174 *
5175 * Compression only happens in the DATA state, and must be flushed in final
5176 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
5177 * is performed at once on final states for all bytes parsed, or when leaving
5178 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +01005179 */
Willy Tarreau87b09662015-04-03 00:22:06 +02005180int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +01005181{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02005182 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +02005183 struct http_txn *txn = s->txn;
5184 struct http_msg *msg = &s->txn->rsp;
Christopher Faulet3e344292015-11-24 16:24:13 +01005185 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +01005186
Christopher Faulete0768eb2018-10-03 16:38:02 +02005187 if (IS_HTX_STRM(s))
5188 return htx_response_forward_body(s, res, an_bit);
5189
Christopher Faulet45073512018-07-20 10:16:29 +02005190 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n",
Christopher Faulet814d2702017-03-30 11:33:44 +02005191 now_ms, __FUNCTION__,
5192 s,
5193 res,
5194 res->rex, res->wex,
5195 res->flags,
Christopher Faulet45073512018-07-20 10:16:29 +02005196 ci_data(res),
Christopher Faulet814d2702017-03-30 11:33:44 +02005197 res->analysers);
5198
Willy Tarreauf5c8bd62010-01-04 07:10:34 +01005199 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5200 return 0;
5201
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02005202 if ((res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
Willy Tarreauf37954d2018-06-15 18:31:02 +02005203 ((res->flags & CF_SHUTW) && (res->to_forward || co_data(res))) ||
Christopher Faulet93e02d82019-03-08 14:18:50 +01005204 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +02005205 /* Output closed while we were sending data. We must abort and
5206 * wake the other side up.
5207 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +01005208 msg->err_state = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +02005209 msg->msg_state = HTTP_MSG_ERROR;
5210 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +01005211 return 1;
5212 }
5213
Willy Tarreau4fe41902010-06-07 22:27:41 +02005214 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +02005215 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +01005216
Christopher Fauletd7c91962015-04-30 11:48:27 +02005217 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005218 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
5219 ? HTTP_MSG_CHUNK_SIZE
5220 : HTTP_MSG_DATA);
Willy Tarreaud98cf932009-12-27 22:54:55 +01005221 }
5222
Willy Tarreauefdf0942014-04-24 20:08:57 +02005223 if (res->to_forward) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005224 /* We can't process the buffer's contents yet */
Willy Tarreauefdf0942014-04-24 20:08:57 +02005225 res->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005226 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +02005227 }
5228
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005229 if (msg->msg_state < HTTP_MSG_DONE) {
5230 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
5231 ? http_msg_forward_chunked_body(s, msg)
5232 : http_msg_forward_body(s, msg));
5233 if (!ret)
5234 goto missing_data_or_waiting;
5235 if (ret < 0)
5236 goto return_bad_res;
5237 }
Christopher Fauletd7c91962015-04-30 11:48:27 +02005238
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005239 /* other states, DONE...TUNNEL */
5240 /* for keep-alive we don't want to forward closes on DONE */
5241 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5242 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
5243 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +02005244
Christopher Faulet894da4c2017-07-18 11:29:07 +02005245 http_resync_states(s);
5246 if (!(res->analysers & an_bit)) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005247 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5248 if (res->flags & CF_SHUTW) {
5249 /* response errors are most likely due to the
5250 * client aborting the transfer. */
Christopher Faulet93e02d82019-03-08 14:18:50 +01005251 goto return_cli_abort;
Willy Tarreau5523b322009-12-29 12:05:52 +01005252 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005253 if (msg->err_pos >= 0)
Willy Tarreaufd9419d2018-09-07 18:01:03 +02005254 http_capture_bad_message(s->be, s, msg, msg->err_state, strm_fe(s));
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005255 goto return_bad_res;
Willy Tarreaud98cf932009-12-27 22:54:55 +01005256 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005257 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +01005258 }
Willy Tarreauf51d03c2016-05-02 15:25:15 +02005259 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +01005260
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005261 missing_data_or_waiting:
Willy Tarreauf003d372012-11-26 13:35:37 +01005262 if (res->flags & CF_SHUTW)
Christopher Faulet93e02d82019-03-08 14:18:50 +01005263 goto return_cli_abort;
Willy Tarreauf003d372012-11-26 13:35:37 +01005264
5265 /* stop waiting for data if the input is closed before the end. If the
5266 * client side was already closed, it means that the client has aborted,
5267 * so we don't want to count this as a server abort. Otherwise it's a
5268 * server abort.
5269 */
Christopher Fauleta33510b2017-03-31 15:37:29 +02005270 if (msg->msg_state < HTTP_MSG_ENDING && res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01005271 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Christopher Faulet93e02d82019-03-08 14:18:50 +01005272 goto return_cli_abort;
Christopher Fauleta46bbd82015-06-19 09:00:58 +02005273 /* If we have some pending data, we continue the processing */
Christopher Faulet93e02d82019-03-08 14:18:50 +01005274 if (!ci_data(res))
5275 goto return_srv_abort;
Willy Tarreau40dba092010-03-04 18:14:51 +01005276 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +01005277
Willy Tarreau40dba092010-03-04 18:14:51 +01005278 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01005279 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +01005280 goto return_bad_res;
5281
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005282 /* When TE: chunked is used, we need to get there again to parse
5283 * remaining chunks even if the server has closed, so we don't want to
Christopher Faulet69744d92017-03-30 10:54:35 +02005284 * set CF_DONTCLOSE. Similarly, if keep-alive is set on the client side
5285 * or if there are filters registered on the stream, we don't want to
5286 * forward a close
Willy Tarreau92aa1fa2010-08-28 18:57:20 +02005287 */
Christopher Faulet69744d92017-03-30 10:54:35 +02005288 if ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Christopher Fauletf1cc5d02017-02-08 09:45:13 +01005289 HAS_DATA_FILTERS(s, res) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +02005290 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5291 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +02005292 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +02005293
Willy Tarreau5c620922011-05-11 19:56:11 +02005294 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02005295 * what we did. So we always set the CF_EXPECT_MORE flag so that the
Willy Tarreau07293032011-05-30 18:29:28 +02005296 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +01005297 * modes are already handled by the stream sock layer. We must not do
5298 * this in content-length mode because it could present the MSG_MORE
5299 * flag with the last block of forwarded data, which would cause an
5300 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +02005301 */
Christopher Faulet92d36382015-11-05 13:35:03 +01005302 if ((msg->flags & HTTP_MSGF_TE_CHNK) || (msg->flags & HTTP_MSGF_COMPRESSING))
Willy Tarreau03cdb7c2012-08-27 23:14:58 +02005303 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +02005304
Willy Tarreau87b09662015-04-03 00:22:06 +02005305 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +01005306 return 0;
5307
Christopher Faulet93e02d82019-03-08 14:18:50 +01005308 return_srv_abort:
5309 _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1);
5310 _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01005311 if (objt_server(s->target))
Christopher Faulet93e02d82019-03-08 14:18:50 +01005312 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.srv_aborts, 1);
5313 if (!(s->flags & SF_ERR_MASK))
5314 s->flags |= SF_ERR_SRVCL;
5315 goto return_error;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +01005316
Christopher Faulet93e02d82019-03-08 14:18:50 +01005317 return_cli_abort:
5318 _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1);
5319 _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01005320 if (objt_server(s->target))
Christopher Faulet93e02d82019-03-08 14:18:50 +01005321 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.cli_aborts, 1);
5322 if (!(s->flags & SF_ERR_MASK))
5323 s->flags |= SF_ERR_CLICL;
5324 goto return_error;
Willy Tarreaud98cf932009-12-27 22:54:55 +01005325
Christopher Faulet93e02d82019-03-08 14:18:50 +01005326 return_bad_res:
5327 _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1);
5328 if (objt_server(s->target)) {
5329 _HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_resp, 1);
5330 health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_RSP);
5331 }
Willy Tarreaue7dff022015-04-03 01:14:29 +02005332 if (!(s->flags & SF_ERR_MASK))
Christopher Faulet93e02d82019-03-08 14:18:50 +01005333 s->flags |= SF_ERR_SRVCL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +01005334
Christopher Faulet93e02d82019-03-08 14:18:50 +01005335 return_error:
Willy Tarreau10e61cb2017-01-04 14:51:22 +01005336 txn->rsp.err_state = txn->rsp.msg_state;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +01005337 txn->rsp.msg_state = HTTP_MSG_ERROR;
5338 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +01005339 http_reply_and_close(s, txn->status, NULL);
Christopher Faulet0184ea72017-01-05 14:06:34 +01005340 res->analysers &= AN_RES_FLT_END;
5341 s->req.analysers &= AN_REQ_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaue7dff022015-04-03 01:14:29 +02005342 if (!(s->flags & SF_FINST_MASK))
5343 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +01005344 return 0;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005345}
5346
5347
Christopher Faulet10079f52018-10-03 15:17:28 +02005348int http_msg_forward_body(struct stream *s, struct http_msg *msg)
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005349{
5350 struct channel *chn = msg->chn;
5351 int ret;
5352
5353 /* Here we have the guarantee to be in HTTP_MSG_DATA or HTTP_MSG_ENDING state */
5354
5355 if (msg->msg_state == HTTP_MSG_ENDING)
5356 goto ending;
5357
5358 /* Neither content-length, nor transfer-encoding was found, so we must
5359 * read the body until the server connection is closed. In that case, we
5360 * eat data as they come. Of course, this happens for response only. */
5361 if (!(msg->flags & HTTP_MSGF_XFER_LEN)) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02005362 unsigned long long len = ci_data(chn) - msg->next;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005363 msg->chunk_len += len;
5364 msg->body_len += len;
5365 }
Christopher Fauletda02e172015-12-04 09:25:05 +01005366 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
Willy Tarreauf37954d2018-06-15 18:31:02 +02005367 /* default_ret */ MIN(msg->chunk_len, ci_data(chn) - msg->next),
Christopher Fauletda02e172015-12-04 09:25:05 +01005368 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005369 msg->next += ret;
5370 msg->chunk_len -= ret;
5371 if (msg->chunk_len) {
5372 /* input empty or output full */
Willy Tarreauf37954d2018-06-15 18:31:02 +02005373 if (ci_data(chn) > msg->next)
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005374 chn->flags |= CF_WAKE_WRITE;
5375 goto missing_data_or_waiting;
5376 }
5377
Christopher Faulet1486b0a2017-07-18 11:42:08 +02005378 /* This check can only be true for a response. HTTP_MSGF_XFER_LEN is
5379 * always set for a request. */
5380 if (!(msg->flags & HTTP_MSGF_XFER_LEN)) {
5381 /* The server still sending data that should be filtered */
5382 if (!(chn->flags & CF_SHUTR) && HAS_DATA_FILTERS(s, chn))
5383 goto missing_data_or_waiting;
Christopher Fauletfd04fcf2018-02-02 15:54:15 +01005384 msg->msg_state = HTTP_MSG_TUNNEL;
5385 goto ending;
Christopher Faulet1486b0a2017-07-18 11:42:08 +02005386 }
Christopher Fauletf1cc5d02017-02-08 09:45:13 +01005387
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005388 msg->msg_state = HTTP_MSG_ENDING;
Christopher Faulet297d3e22019-03-22 14:16:14 +01005389 chn->flags |= CF_EOI;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005390
5391 ending:
Willy Tarreauc9fa0482018-07-10 17:43:27 +02005392 /* we may have some pending data starting at res->buf.p such as a last
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005393 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +01005394 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
5395 /* default_ret */ msg->next,
5396 /* on_error */ goto error);
Willy Tarreaubcbd3932018-06-06 07:13:22 +02005397 c_adv(chn, ret);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005398 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +02005399 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
5400 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +02005401 if (msg->next)
5402 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +02005403
Christopher Fauletda02e172015-12-04 09:25:05 +01005404 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
5405 /* default_ret */ 1,
5406 /* on_error */ goto error,
5407 /* on_wait */ goto waiting);
Christopher Fauletfd04fcf2018-02-02 15:54:15 +01005408 if (msg->msg_state == HTTP_MSG_ENDING)
5409 msg->msg_state = HTTP_MSG_DONE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005410 return 1;
5411
5412 missing_data_or_waiting:
Willy Tarreauc9fa0482018-07-10 17:43:27 +02005413 /* we may have some pending data starting at chn->buf.p */
Christopher Fauletda02e172015-12-04 09:25:05 +01005414 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
5415 /* default_ret */ msg->next,
5416 /* on_error */ goto error);
Willy Tarreaubcbd3932018-06-06 07:13:22 +02005417 c_adv(chn, ret);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005418 msg->next -= ret;
5419 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
5420 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +01005421 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005422 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +02005423 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005424 return 0;
5425 error:
5426 return -1;
5427}
5428
Christopher Faulet10079f52018-10-03 15:17:28 +02005429int http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg)
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005430{
5431 struct channel *chn = msg->chn;
Willy Tarreaue56cdd32017-09-21 08:36:33 +02005432 unsigned int chunk;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005433 int ret;
5434
5435 /* Here we have the guarantee to be in one of the following state:
5436 * HTTP_MSG_DATA, HTTP_MSG_CHUNK_SIZE, HTTP_MSG_CHUNK_CRLF,
5437 * HTTP_MSG_TRAILERS or HTTP_MSG_ENDING. */
5438
Christopher Fauletca874b82018-09-20 11:31:01 +02005439 if (msg->msg_state == HTTP_MSG_ENDING)
5440 goto ending;
5441
5442 /* Don't parse chunks if there is no input data */
5443 if (!ci_data(chn))
5444 goto waiting;
5445
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005446 switch_states:
5447 switch (msg->msg_state) {
5448 case HTTP_MSG_DATA:
Christopher Fauletda02e172015-12-04 09:25:05 +01005449 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
Willy Tarreauf37954d2018-06-15 18:31:02 +02005450 /* default_ret */ MIN(msg->chunk_len, ci_data(chn) - msg->next),
Christopher Fauletda02e172015-12-04 09:25:05 +01005451 /* on_error */ goto error);
5452 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005453 msg->chunk_len -= ret;
5454 if (msg->chunk_len) {
5455 /* input empty or output full */
Willy Tarreauf37954d2018-06-15 18:31:02 +02005456 if (ci_data(chn) > msg->next)
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005457 chn->flags |= CF_WAKE_WRITE;
5458 goto missing_data_or_waiting;
5459 }
5460
5461 /* nothing left to forward for this chunk*/
5462 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
5463 /* fall through for HTTP_MSG_CHUNK_CRLF */
5464
5465 case HTTP_MSG_CHUNK_CRLF:
5466 /* we want the CRLF after the data */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02005467 ret = h1_skip_chunk_crlf(&chn->buf, co_data(chn) + msg->next, c_data(chn));
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005468 if (ret == 0)
5469 goto missing_data_or_waiting;
Willy Tarreaub2892562017-09-21 11:33:54 +02005470 if (ret < 0) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02005471 msg->err_pos = ci_data(chn) + ret;
Willy Tarreaub2892562017-09-21 11:33:54 +02005472 if (msg->err_pos < 0)
Willy Tarreauc9fa0482018-07-10 17:43:27 +02005473 msg->err_pos += chn->buf.size;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005474 goto chunk_parsing_error;
Willy Tarreaub2892562017-09-21 11:33:54 +02005475 }
Christopher Faulet113f7de2015-12-14 14:52:13 +01005476 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005477 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5478 /* fall through for HTTP_MSG_CHUNK_SIZE */
5479
5480 case HTTP_MSG_CHUNK_SIZE:
5481 /* read the chunk size and assign it to ->chunk_len,
5482 * then set ->next to point to the body and switch to
5483 * DATA or TRAILERS state.
5484 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02005485 ret = h1_parse_chunk_size(&chn->buf, co_data(chn) + msg->next, c_data(chn), &chunk);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005486 if (ret == 0)
5487 goto missing_data_or_waiting;
Willy Tarreaue56cdd32017-09-21 08:36:33 +02005488 if (ret < 0) {
Willy Tarreauf37954d2018-06-15 18:31:02 +02005489 msg->err_pos = ci_data(chn) + ret;
Willy Tarreaue56cdd32017-09-21 08:36:33 +02005490 if (msg->err_pos < 0)
Willy Tarreauc9fa0482018-07-10 17:43:27 +02005491 msg->err_pos += chn->buf.size;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005492 goto chunk_parsing_error;
Willy Tarreaue56cdd32017-09-21 08:36:33 +02005493 }
5494
5495 msg->sol = ret;
Christopher Faulet113f7de2015-12-14 14:52:13 +01005496 msg->next += ret;
Willy Tarreaue56cdd32017-09-21 08:36:33 +02005497 msg->chunk_len = chunk;
5498 msg->body_len += chunk;
5499
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005500 if (msg->chunk_len) {
5501 msg->msg_state = HTTP_MSG_DATA;
5502 goto switch_states;
5503 }
5504 msg->msg_state = HTTP_MSG_TRAILERS;
5505 /* fall through for HTTP_MSG_TRAILERS */
5506
5507 case HTTP_MSG_TRAILERS:
5508 ret = http_forward_trailers(msg);
5509 if (ret < 0)
5510 goto chunk_parsing_error;
Christopher Fauletda02e172015-12-04 09:25:05 +01005511 FLT_STRM_DATA_CB(s, chn, flt_http_chunk_trailers(s, msg),
5512 /* default_ret */ 1,
5513 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005514 msg->next += msg->sol;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005515 if (!ret)
5516 goto missing_data_or_waiting;
5517 break;
5518
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005519 default:
5520 /* This should no happen in this function */
5521 goto error;
5522 }
5523
5524 msg->msg_state = HTTP_MSG_ENDING;
Christopher Faulet297d3e22019-03-22 14:16:14 +01005525 chn->flags |= CF_EOI;
5526
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005527 ending:
Willy Tarreauc9fa0482018-07-10 17:43:27 +02005528 /* we may have some pending data starting at res->buf.p such as a last
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005529 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +01005530 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005531 /* default_ret */ msg->next,
5532 /* on_error */ goto error);
Willy Tarreaubcbd3932018-06-06 07:13:22 +02005533 c_adv(chn, ret);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005534 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +02005535 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
5536 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +02005537 if (msg->next)
5538 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +02005539
Christopher Fauletda02e172015-12-04 09:25:05 +01005540 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005541 /* default_ret */ 1,
5542 /* on_error */ goto error,
5543 /* on_wait */ goto waiting);
5544 msg->msg_state = HTTP_MSG_DONE;
5545 return 1;
5546
5547 missing_data_or_waiting:
Willy Tarreauc9fa0482018-07-10 17:43:27 +02005548 /* we may have some pending data starting at chn->buf.p */
Christopher Fauletda02e172015-12-04 09:25:05 +01005549 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005550 /* default_ret */ msg->next,
5551 /* on_error */ goto error);
Willy Tarreaubcbd3932018-06-06 07:13:22 +02005552 c_adv(chn, ret);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005553 msg->next -= ret;
5554 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
5555 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +01005556 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005557 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +02005558 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005559 return 0;
5560
5561 chunk_parsing_error:
5562 if (msg->err_pos >= 0) {
5563 if (chn->flags & CF_ISRESP)
Willy Tarreaufd9419d2018-09-07 18:01:03 +02005564 http_capture_bad_message(s->be, s, msg,
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005565 msg->msg_state, strm_fe(s));
5566 else
Willy Tarreaufd9419d2018-09-07 18:01:03 +02005567 http_capture_bad_message(strm_fe(s), s,
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005568 msg, msg->msg_state, s->be);
5569 }
5570 error:
5571 return -1;
Willy Tarreaud98cf932009-12-27 22:54:55 +01005572}
5573
Christopher Fauletdbe34eb2015-12-02 10:01:17 +01005574
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005575/* Iterate the same filter through all request headers.
5576 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +01005577 * Since it can manage the switch to another backend, it updates the per-proxy
5578 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +01005579 */
Willy Tarreau87b09662015-04-03 00:22:06 +02005580int apply_filter_to_req_headers(struct stream *s, struct channel *req, struct hdr_exp *exp)
Willy Tarreau58f10d72006-12-04 02:26:12 +01005581{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005582 char *cur_ptr, *cur_end, *cur_next;
5583 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +02005584 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005585 struct hdr_idx_elem *cur_hdr;
Willy Tarreau6e27be12018-08-22 04:46:47 +02005586 int delta, len;
Willy Tarreau0f7562b2007-01-07 15:46:13 +01005587
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005588 last_hdr = 0;
5589
Willy Tarreauf37954d2018-06-15 18:31:02 +02005590 cur_next = ci_head(req) + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005591 old_idx = 0;
5592
5593 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +01005594 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005595 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +01005596 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005597 (exp->action == ACT_ALLOW ||
5598 exp->action == ACT_DENY ||
5599 exp->action == ACT_TARPIT))
5600 return 0;
5601
Willy Tarreau4dbc4a22007-03-03 16:23:22 +01005602 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005603 if (!cur_idx)
5604 break;
5605
Willy Tarreau4dbc4a22007-03-03 16:23:22 +01005606 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005607 cur_ptr = cur_next;
5608 cur_end = cur_ptr + cur_hdr->len;
5609 cur_next = cur_end + cur_hdr->cr + 1;
5610
5611 /* Now we have one header between cur_ptr and cur_end,
5612 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +01005613 */
5614
Willy Tarreau15a53a42015-01-21 13:39:42 +01005615 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005616 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005617 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +01005618 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005619 last_hdr = 1;
5620 break;
5621
5622 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +01005623 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005624 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005625 break;
5626
5627 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +01005628 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005629 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005630 break;
5631
5632 case ACT_REPLACE:
Willy Tarreau6e27be12018-08-22 04:46:47 +02005633 len = exp_replace(trash.area,
5634 trash.size, cur_ptr,
5635 exp->replace, pmatch);
5636 if (len < 0)
Sasha Pachevc6002042014-05-26 12:33:48 -06005637 return -1;
5638
Willy Tarreau6e27be12018-08-22 04:46:47 +02005639 delta = b_rep_blk(&req->buf, cur_ptr, cur_end, trash.area, len);
5640
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005641 /* FIXME: if the user adds a newline in the replacement, the
5642 * index will not be recalculated for now, and the new line
5643 * will not be counted as a new header.
5644 */
5645
5646 cur_end += delta;
5647 cur_next += delta;
5648 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +01005649 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005650 break;
5651
5652 case ACT_REMOVE:
Willy Tarreauc9fa0482018-07-10 17:43:27 +02005653 delta = b_rep_blk(&req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005654 cur_next += delta;
5655
Willy Tarreaufa355d42009-11-29 18:12:29 +01005656 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +01005657 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5658 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005659 cur_hdr->len = 0;
5660 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +01005661 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005662 break;
5663
5664 }
Willy Tarreau58f10d72006-12-04 02:26:12 +01005665 }
5666
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005667 /* keep the link from this header to next one in case of later
5668 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +01005669 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005670 old_idx = cur_idx;
5671 }
5672 return 0;
5673}
5674
5675
5676/* Apply the filter to the request line.
5677 * Returns 0 if nothing has been done, 1 if the filter has been applied,
5678 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +01005679 * Since it can manage the switch to another backend, it updates the per-proxy
5680 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005681 */
Willy Tarreau87b09662015-04-03 00:22:06 +02005682int apply_filter_to_req_line(struct stream *s, struct channel *req, struct hdr_exp *exp)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005683{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005684 char *cur_ptr, *cur_end;
5685 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +02005686 struct http_txn *txn = s->txn;
Willy Tarreau6e27be12018-08-22 04:46:47 +02005687 int delta, len;
Willy Tarreau58f10d72006-12-04 02:26:12 +01005688
Willy Tarreau3d300592007-03-18 18:34:41 +01005689 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005690 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +01005691 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005692 (exp->action == ACT_ALLOW ||
5693 exp->action == ACT_DENY ||
5694 exp->action == ACT_TARPIT))
5695 return 0;
5696 else if (exp->action == ACT_REMOVE)
5697 return 0;
5698
5699 done = 0;
5700
Willy Tarreauf37954d2018-06-15 18:31:02 +02005701 cur_ptr = ci_head(req);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +01005702 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005703
5704 /* Now we have the request line between cur_ptr and cur_end */
5705
Willy Tarreau15a53a42015-01-21 13:39:42 +01005706 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005707 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005708 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +01005709 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005710 done = 1;
5711 break;
Willy Tarreaua496b602006-12-17 23:15:24 +01005712
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005713 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +01005714 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005715 done = 1;
5716 break;
Willy Tarreaua496b602006-12-17 23:15:24 +01005717
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005718 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +01005719 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005720 done = 1;
5721 break;
Willy Tarreaua496b602006-12-17 23:15:24 +01005722
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005723 case ACT_REPLACE:
Willy Tarreau6e27be12018-08-22 04:46:47 +02005724 len = exp_replace(trash.area, trash.size,
5725 cur_ptr, exp->replace, pmatch);
5726 if (len < 0)
Sasha Pachevc6002042014-05-26 12:33:48 -06005727 return -1;
5728
Willy Tarreau6e27be12018-08-22 04:46:47 +02005729 delta = b_rep_blk(&req->buf, cur_ptr, cur_end, trash.area, len);
5730
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005731 /* FIXME: if the user adds a newline in the replacement, the
5732 * index will not be recalculated for now, and the new line
5733 * will not be counted as a new header.
5734 */
Willy Tarreaua496b602006-12-17 23:15:24 +01005735
Willy Tarreaufa355d42009-11-29 18:12:29 +01005736 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005737 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +02005738 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005739 HTTP_MSG_RQMETH,
5740 cur_ptr, cur_end + 1,
5741 NULL, NULL);
5742 if (unlikely(!cur_end))
5743 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +01005744
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005745 /* we have a full request and we know that we have either a CR
5746 * or an LF at <ptr>.
5747 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +01005748 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
5749 hdr_idx_set_start(&txn->hdr_idx, txn->req.sl.rq.l, *cur_end == '\r');
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005750 /* there is no point trying this regex on headers */
5751 return 1;
5752 }
5753 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005754 return done;
5755}
Willy Tarreau97de6242006-12-27 17:18:38 +01005756
Willy Tarreau58f10d72006-12-04 02:26:12 +01005757
Willy Tarreau58f10d72006-12-04 02:26:12 +01005758
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005759/*
Willy Tarreau87b09662015-04-03 00:22:06 +02005760 * Apply all the req filters of proxy <px> to all headers in buffer <req> of stream <s>.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005761 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
Willy Tarreaua15645d2007-03-18 16:22:39 +01005762 * unparsable request. Since it can manage the switch to another backend, it
5763 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005764 */
Willy Tarreau87b09662015-04-03 00:22:06 +02005765int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005766{
Willy Tarreau192252e2015-04-04 01:47:55 +02005767 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +02005768 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +01005769 struct hdr_exp *exp;
5770
5771 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005772 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +01005773
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005774 /*
5775 * The interleaving of transformations and verdicts
5776 * makes it difficult to decide to continue or stop
5777 * the evaluation.
5778 */
5779
Willy Tarreau6c123b12010-01-28 20:22:06 +01005780 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
5781 break;
5782
Willy Tarreau3d300592007-03-18 18:34:41 +01005783 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005784 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +01005785 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005786 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +01005787
5788 /* if this filter had a condition, evaluate it now and skip to
5789 * next filter if the condition does not match.
5790 */
5791 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02005792 ret = acl_exec_cond(exp->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau6c123b12010-01-28 20:22:06 +01005793 ret = acl_pass(ret);
5794 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
5795 ret = !ret;
5796
5797 if (!ret)
5798 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005799 }
5800
5801 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +01005802 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005803 if (unlikely(ret < 0))
5804 return -1;
5805
5806 if (likely(ret == 0)) {
5807 /* The filter did not match the request, it can be
5808 * iterated through all headers.
5809 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +01005810 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
5811 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +01005812 }
Willy Tarreau58f10d72006-12-04 02:26:12 +01005813 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005814 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +01005815}
5816
Cyril Bontébf47aeb2009-10-15 00:15:40 +02005817
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005818/* Delete a value in a header between delimiters <from> and <next> in buffer
5819 * <buf>. The number of characters displaced is returned, and the pointer to
5820 * the first delimiter is updated if required. The function tries as much as
5821 * possible to respect the following principles :
5822 * - replace <from> delimiter by the <next> one unless <from> points to a
5823 * colon, in which case <next> is simply removed
5824 * - set exactly one space character after the new first delimiter, unless
5825 * there are not enough characters in the block being moved to do so.
5826 * - remove unneeded spaces before the previous delimiter and after the new
5827 * one.
5828 *
5829 * It is the caller's responsibility to ensure that :
5830 * - <from> points to a valid delimiter or the colon ;
5831 * - <next> points to a valid delimiter or the final CR/LF ;
5832 * - there are non-space chars before <from> ;
5833 * - there is a CR/LF at or after <next>.
5834 */
Willy Tarreauc5a4fd52018-12-11 11:42:27 +01005835static int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005836{
5837 char *prev = *from;
5838
5839 if (*prev == ':') {
5840 /* We're removing the first value, preserve the colon and add a
5841 * space if possible.
5842 */
Willy Tarreau2235b262016-11-05 15:50:20 +01005843 if (!HTTP_IS_CRLF(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005844 next++;
5845 prev++;
5846 if (prev < next)
5847 *prev++ = ' ';
5848
Willy Tarreau2235b262016-11-05 15:50:20 +01005849 while (HTTP_IS_SPHT(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005850 next++;
5851 } else {
5852 /* Remove useless spaces before the old delimiter. */
Willy Tarreau2235b262016-11-05 15:50:20 +01005853 while (HTTP_IS_SPHT(*(prev-1)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005854 prev--;
5855 *from = prev;
5856
5857 /* copy the delimiter and if possible a space if we're
5858 * not at the end of the line.
5859 */
Willy Tarreau2235b262016-11-05 15:50:20 +01005860 if (!HTTP_IS_CRLF(*next)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005861 *prev++ = *next++;
5862 if (prev + 1 < next)
5863 *prev++ = ' ';
Willy Tarreau2235b262016-11-05 15:50:20 +01005864 while (HTTP_IS_SPHT(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005865 next++;
5866 }
5867 }
Willy Tarreaue3128022018-07-12 15:55:34 +02005868 return b_rep_blk(buf, prev, next, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005869}
5870
Cyril Bontébf47aeb2009-10-15 00:15:40 +02005871/*
Willy Tarreau396d2c62007-11-04 19:30:00 +01005872 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005873 * desirable to call it only when needed. This code is quite complex because
5874 * of the multiple very crappy and ambiguous syntaxes we have to support. it
5875 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +01005876 */
Willy Tarreau87b09662015-04-03 00:22:06 +02005877void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +01005878{
Willy Tarreaueee5b512015-04-03 23:46:31 +02005879 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02005880 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005881 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01005882 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005883 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
5884 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +01005885
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005886 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +01005887 old_idx = 0;
Willy Tarreauf37954d2018-06-15 18:31:02 +02005888 hdr_next = ci_head(req) + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +01005889
Willy Tarreau4dbc4a22007-03-03 16:23:22 +01005890 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +01005891 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +01005892 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +01005893
Willy Tarreau4dbc4a22007-03-03 16:23:22 +01005894 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005895 hdr_beg = hdr_next;
5896 hdr_end = hdr_beg + cur_hdr->len;
5897 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +01005898
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005899 /* We have one full header between hdr_beg and hdr_end, and the
5900 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +01005901 * "Cookie:" headers.
5902 */
5903
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005904 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +01005905 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +01005906 old_idx = cur_idx;
5907 continue;
5908 }
5909
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005910 del_from = NULL; /* nothing to be deleted */
5911 preserve_hdr = 0; /* assume we may kill the whole header */
5912
Willy Tarreau58f10d72006-12-04 02:26:12 +01005913 /* Now look for cookies. Conforming to RFC2109, we have to support
5914 * attributes whose name begin with a '$', and associate them with
5915 * the right cookie, if we want to delete this cookie.
5916 * So there are 3 cases for each cookie read :
5917 * 1) it's a special attribute, beginning with a '$' : ignore it.
5918 * 2) it's a server id cookie that we *MAY* want to delete : save
5919 * some pointers on it (last semi-colon, beginning of cookie...)
5920 * 3) it's an application cookie : we *MAY* have to delete a previous
5921 * "special" cookie.
5922 * At the end of loop, if a "special" cookie remains, we may have to
5923 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005924 * *MUST* delete it.
5925 *
5926 * Note: RFC2965 is unclear about the processing of spaces around
5927 * the equal sign in the ATTR=VALUE form. A careful inspection of
5928 * the RFC explicitly allows spaces before it, and not within the
5929 * tokens (attrs or values). An inspection of RFC2109 allows that
5930 * too but section 10.1.3 lets one think that spaces may be allowed
5931 * after the equal sign too, resulting in some (rare) buggy
5932 * implementations trying to do that. So let's do what servers do.
5933 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
5934 * allowed quoted strings in values, with any possible character
5935 * after a backslash, including control chars and delimitors, which
5936 * causes parsing to become ambiguous. Browsers also allow spaces
5937 * within values even without quotes.
5938 *
5939 * We have to keep multiple pointers in order to support cookie
5940 * removal at the beginning, middle or end of header without
5941 * corrupting the header. All of these headers are valid :
5942 *
5943 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
5944 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
5945 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
5946 * | | | | | | | | |
5947 * | | | | | | | | hdr_end <--+
5948 * | | | | | | | +--> next
5949 * | | | | | | +----> val_end
5950 * | | | | | +-----------> val_beg
5951 * | | | | +--------------> equal
5952 * | | | +----------------> att_end
5953 * | | +---------------------> att_beg
5954 * | +--------------------------> prev
5955 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +01005956 */
5957
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005958 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
5959 /* Iterate through all cookies on this line */
5960
5961 /* find att_beg */
5962 att_beg = prev + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +01005963 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005964 att_beg++;
5965
5966 /* find att_end : this is the first character after the last non
5967 * space before the equal. It may be equal to hdr_end.
5968 */
5969 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +01005970
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005971 while (equal < hdr_end) {
5972 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +01005973 break;
Willy Tarreau2235b262016-11-05 15:50:20 +01005974 if (HTTP_IS_SPHT(*equal++))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005975 continue;
5976 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +01005977 }
5978
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005979 /* here, <equal> points to '=', a delimitor or the end. <att_end>
5980 * is between <att_beg> and <equal>, both may be identical.
5981 */
5982
5983 /* look for end of cookie if there is an equal sign */
5984 if (equal < hdr_end && *equal == '=') {
5985 /* look for the beginning of the value */
5986 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +01005987 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005988 val_beg++;
5989
5990 /* find the end of the value, respecting quotes */
Willy Tarreauab813a42018-09-10 18:41:28 +02005991 next = http_find_cookie_value_end(val_beg, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005992
5993 /* make val_end point to the first white space or delimitor after the value */
5994 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +01005995 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02005996 val_end--;
5997 } else {
5998 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +01005999 }
Willy Tarreau58f10d72006-12-04 02:26:12 +01006000
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006001 /* We have nothing to do with attributes beginning with '$'. However,
6002 * they will automatically be removed if a header before them is removed,
6003 * since they're supposed to be linked together.
6004 */
6005 if (*att_beg == '$')
6006 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +01006007
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006008 /* Ignore cookies with no equal sign */
6009 if (equal == next) {
6010 /* This is not our cookie, so we must preserve it. But if we already
6011 * scheduled another cookie for removal, we cannot remove the
6012 * complete header, but we can remove the previous block itself.
6013 */
6014 preserve_hdr = 1;
6015 if (del_from != NULL) {
Willy Tarreauc9fa0482018-07-10 17:43:27 +02006016 int delta = del_hdr_value(&req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006017 val_end += delta;
6018 next += delta;
6019 hdr_end += delta;
6020 hdr_next += delta;
6021 cur_hdr->len += delta;
6022 http_msg_move_end(&txn->req, delta);
6023 prev = del_from;
6024 del_from = NULL;
6025 }
6026 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +01006027 }
Willy Tarreau58f10d72006-12-04 02:26:12 +01006028
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006029 /* if there are spaces around the equal sign, we need to
6030 * strip them otherwise we'll get trouble for cookie captures,
6031 * or even for rewrites. Since this happens extremely rarely,
6032 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +01006033 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006034 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6035 int stripped_before = 0;
6036 int stripped_after = 0;
6037
6038 if (att_end != equal) {
Willy Tarreauc9fa0482018-07-10 17:43:27 +02006039 stripped_before = b_rep_blk(&req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006040 equal += stripped_before;
6041 val_beg += stripped_before;
6042 }
6043
6044 if (val_beg > equal + 1) {
Willy Tarreauc9fa0482018-07-10 17:43:27 +02006045 stripped_after = b_rep_blk(&req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006046 val_beg += stripped_after;
6047 stripped_before += stripped_after;
6048 }
6049
6050 val_end += stripped_before;
6051 next += stripped_before;
6052 hdr_end += stripped_before;
6053 hdr_next += stripped_before;
6054 cur_hdr->len += stripped_before;
6055 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +01006056 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006057 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +01006058
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006059 /* First, let's see if we want to capture this cookie. We check
6060 * that we don't already have a client side cookie, because we
6061 * can only capture one. Also as an optimisation, we ignore
6062 * cookies shorter than the declared name.
6063 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02006064 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6065 (val_end - att_beg >= sess->fe->capture_namelen) &&
6066 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006067 int log_len = val_end - att_beg;
6068
Willy Tarreaubafbe012017-11-24 17:34:44 +01006069 if ((txn->cli_cookie = pool_alloc(pool_head_capture)) == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01006070 ha_alert("HTTP logging : out of memory.\n");
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006071 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02006072 if (log_len > sess->fe->capture_len)
6073 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006074 memcpy(txn->cli_cookie, att_beg, log_len);
6075 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +01006076 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006077 }
Willy Tarreau58f10d72006-12-04 02:26:12 +01006078
Willy Tarreaubca99692010-10-06 19:25:55 +02006079 /* Persistence cookies in passive, rewrite or insert mode have the
6080 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006081 *
Willy Tarreaubca99692010-10-06 19:25:55 +02006082 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006083 *
Willy Tarreaubca99692010-10-06 19:25:55 +02006084 * For cookies in prefix mode, the form is :
6085 *
6086 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006087 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02006088 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
6089 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
6090 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006091 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +01006092
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006093 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6094 * have the server ID between val_beg and delim, and the original cookie between
6095 * delim+1 and val_end. Otherwise, delim==val_end :
6096 *
6097 * Cookie: NAME=SRV; # in all but prefix modes
6098 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6099 * | || || | |+-> next
6100 * | || || | +--> val_end
6101 * | || || +---------> delim
6102 * | || |+------------> val_beg
6103 * | || +-------------> att_end = equal
6104 * | |+-----------------> att_beg
6105 * | +------------------> prev
6106 * +-------------------------> hdr_beg
6107 */
Willy Tarreau58f10d72006-12-04 02:26:12 +01006108
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02006109 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006110 for (delim = val_beg; delim < val_end; delim++)
6111 if (*delim == COOKIE_DELIM)
6112 break;
Willy Tarreaubca99692010-10-06 19:25:55 +02006113 } else {
6114 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006115 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +02006116 /* Now check if the cookie contains a date field, which would
6117 * appear after a vertical bar ('|') just after the server name
6118 * and before the delimiter.
6119 */
6120 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6121 if (vbar1) {
6122 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +02006123 * right is the last seen date. It is a base64 encoded
6124 * 30-bit value representing the UNIX date since the
6125 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +02006126 */
Willy Tarreauf64d1412010-10-07 20:06:11 +02006127 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +02006128 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +02006129 if (val_end - vbar1 >= 5) {
6130 val = b64tos30(vbar1);
6131 if (val > 0)
6132 txn->cookie_last_date = val << 2;
6133 }
6134 /* look for a second vertical bar */
6135 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6136 if (vbar1 && (val_end - vbar1 > 5)) {
6137 val = b64tos30(vbar1 + 1);
6138 if (val > 0)
6139 txn->cookie_first_date = val << 2;
6140 }
Willy Tarreaubca99692010-10-06 19:25:55 +02006141 }
6142 }
Willy Tarreau58f10d72006-12-04 02:26:12 +01006143
Willy Tarreauf64d1412010-10-07 20:06:11 +02006144 /* if the cookie has an expiration date and the proxy wants to check
6145 * it, then we do that now. We first check if the cookie is too old,
6146 * then only if it has expired. We detect strict overflow because the
6147 * time resolution here is not great (4 seconds). Cookies with dates
6148 * in the future are ignored if their offset is beyond one day. This
6149 * allows an admin to fix timezone issues without expiring everyone
6150 * and at the same time avoids keeping unwanted side effects for too
6151 * long.
6152 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02006153 if (txn->cookie_first_date && s->be->cookie_maxlife &&
6154 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +02006155 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +02006156 txn->flags &= ~TX_CK_MASK;
6157 txn->flags |= TX_CK_OLD;
6158 delim = val_beg; // let's pretend we have not found the cookie
6159 txn->cookie_first_date = 0;
6160 txn->cookie_last_date = 0;
6161 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02006162 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
6163 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +02006164 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +02006165 txn->flags &= ~TX_CK_MASK;
6166 txn->flags |= TX_CK_EXPIRED;
6167 delim = val_beg; // let's pretend we have not found the cookie
6168 txn->cookie_first_date = 0;
6169 txn->cookie_last_date = 0;
6170 }
6171
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006172 /* Here, we'll look for the first running server which supports the cookie.
6173 * This allows to share a same cookie between several servers, for example
6174 * to dedicate backup servers to specific servers only.
6175 * However, to prevent clients from sticking to cookie-less backup server
6176 * when they have incidentely learned an empty cookie, we simply ignore
6177 * empty cookies and mark them as invalid.
6178 * The same behaviour is applied when persistence must be ignored.
6179 */
Willy Tarreaue7dff022015-04-03 01:14:29 +02006180 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006181 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +01006182
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006183 while (srv) {
6184 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6185 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Emeric Brun52a91d32017-08-31 14:41:55 +02006186 if ((srv->cur_state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02006187 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02006188 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006189 /* we found the server and we can use it */
6190 txn->flags &= ~TX_CK_MASK;
Emeric Brun52a91d32017-08-31 14:41:55 +02006191 txn->flags |= (srv->cur_state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +02006192 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02006193 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006194 break;
6195 } else {
6196 /* we found a server, but it's down,
6197 * mark it as such and go on in case
6198 * another one is available.
6199 */
6200 txn->flags &= ~TX_CK_MASK;
6201 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +01006202 }
Willy Tarreau58f10d72006-12-04 02:26:12 +01006203 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006204 srv = srv->next;
6205 }
Willy Tarreau58f10d72006-12-04 02:26:12 +01006206
Willy Tarreauf64d1412010-10-07 20:06:11 +02006207 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +02006208 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006209 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +02006210 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +02006211 txn->flags |= TX_CK_UNUSED;
6212 else
6213 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006214 }
Willy Tarreau58f10d72006-12-04 02:26:12 +01006215
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006216 /* depending on the cookie mode, we may have to either :
6217 * - delete the complete cookie if we're in insert+indirect mode, so that
6218 * the server never sees it ;
6219 * - remove the server id from the cookie value, and tag the cookie as an
Joseph Herlant5ba80252018-11-15 09:25:36 -08006220 * application cookie so that it does not get accidently removed later,
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006221 * if we're in cookie prefix mode
6222 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02006223 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006224 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +01006225
Willy Tarreauc9fa0482018-07-10 17:43:27 +02006226 delta = b_rep_blk(&req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006227 val_end += delta;
6228 next += delta;
6229 hdr_end += delta;
6230 hdr_next += delta;
6231 cur_hdr->len += delta;
6232 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +01006233
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006234 del_from = NULL;
6235 preserve_hdr = 1; /* we want to keep this cookie */
6236 }
6237 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02006238 (s->be->ck_opts & (PR_CK_INS | PR_CK_IND)) == (PR_CK_INS | PR_CK_IND)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006239 del_from = prev;
6240 }
6241 } else {
6242 /* This is not our cookie, so we must preserve it. But if we already
6243 * scheduled another cookie for removal, we cannot remove the
6244 * complete header, but we can remove the previous block itself.
6245 */
6246 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +01006247
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006248 if (del_from != NULL) {
Willy Tarreauc9fa0482018-07-10 17:43:27 +02006249 int delta = del_hdr_value(&req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +01006250 if (att_beg >= del_from)
6251 att_beg += delta;
6252 if (att_end >= del_from)
6253 att_end += delta;
6254 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006255 val_end += delta;
6256 next += delta;
6257 hdr_end += delta;
6258 hdr_next += delta;
6259 cur_hdr->len += delta;
6260 http_msg_move_end(&txn->req, delta);
6261 prev = del_from;
6262 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +01006263 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006264 }
Willy Tarreau58f10d72006-12-04 02:26:12 +01006265
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006266 /* continue with next cookie on this header line */
6267 att_beg = next;
6268 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +01006269
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006270 /* There are no more cookies on this line.
6271 * We may still have one (or several) marked for deletion at the
6272 * end of the line. We must do this now in two ways :
6273 * - if some cookies must be preserved, we only delete from the
6274 * mark to the end of line ;
6275 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +01006276 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006277 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +01006278 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006279 if (preserve_hdr) {
Willy Tarreauc9fa0482018-07-10 17:43:27 +02006280 delta = del_hdr_value(&req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006281 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +01006282 cur_hdr->len += delta;
6283 } else {
Willy Tarreauc9fa0482018-07-10 17:43:27 +02006284 delta = b_rep_blk(&req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +01006285
6286 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +01006287 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6288 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +01006289 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +01006290 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +01006291 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006292 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +01006293 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +01006294 }
6295
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006296 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +01006297 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +02006298 }
Willy Tarreau58f10d72006-12-04 02:26:12 +01006299}
6300
6301
Willy Tarreaua15645d2007-03-18 16:22:39 +01006302/* Iterate the same filter through all response headers contained in <rtr>.
6303 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6304 */
Willy Tarreau87b09662015-04-03 00:22:06 +02006305int apply_filter_to_resp_headers(struct stream *s, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +01006306{
Willy Tarreaua15645d2007-03-18 16:22:39 +01006307 char *cur_ptr, *cur_end, *cur_next;
6308 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +02006309 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006310 struct hdr_idx_elem *cur_hdr;
Willy Tarreau6e27be12018-08-22 04:46:47 +02006311 int delta, len;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006312
6313 last_hdr = 0;
6314
Willy Tarreauf37954d2018-06-15 18:31:02 +02006315 cur_next = ci_head(rtr) + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +01006316 old_idx = 0;
6317
6318 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +01006319 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +01006320 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +01006321 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +01006322 (exp->action == ACT_ALLOW ||
6323 exp->action == ACT_DENY))
6324 return 0;
6325
6326 cur_idx = txn->hdr_idx.v[old_idx].next;
6327 if (!cur_idx)
6328 break;
6329
6330 cur_hdr = &txn->hdr_idx.v[cur_idx];
6331 cur_ptr = cur_next;
6332 cur_end = cur_ptr + cur_hdr->len;
6333 cur_next = cur_end + cur_hdr->cr + 1;
6334
6335 /* Now we have one header between cur_ptr and cur_end,
6336 * and the next header starts at cur_next.
6337 */
6338
Willy Tarreau15a53a42015-01-21 13:39:42 +01006339 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +01006340 switch (exp->action) {
6341 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +01006342 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006343 last_hdr = 1;
6344 break;
6345
6346 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +01006347 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006348 last_hdr = 1;
6349 break;
6350
6351 case ACT_REPLACE:
Willy Tarreau6e27be12018-08-22 04:46:47 +02006352 len = exp_replace(trash.area,
6353 trash.size, cur_ptr,
6354 exp->replace, pmatch);
6355 if (len < 0)
Sasha Pachevc6002042014-05-26 12:33:48 -06006356 return -1;
6357
Willy Tarreau6e27be12018-08-22 04:46:47 +02006358 delta = b_rep_blk(&rtr->buf, cur_ptr, cur_end, trash.area, len);
6359
Willy Tarreaua15645d2007-03-18 16:22:39 +01006360 /* FIXME: if the user adds a newline in the replacement, the
6361 * index will not be recalculated for now, and the new line
6362 * will not be counted as a new header.
6363 */
6364
6365 cur_end += delta;
6366 cur_next += delta;
6367 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +01006368 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +01006369 break;
6370
6371 case ACT_REMOVE:
Willy Tarreauc9fa0482018-07-10 17:43:27 +02006372 delta = b_rep_blk(&rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +01006373 cur_next += delta;
6374
Willy Tarreaufa355d42009-11-29 18:12:29 +01006375 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +01006376 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6377 txn->hdr_idx.used--;
6378 cur_hdr->len = 0;
6379 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +01006380 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006381 break;
6382
6383 }
6384 }
Willy Tarreaua15645d2007-03-18 16:22:39 +01006385
6386 /* keep the link from this header to next one in case of later
6387 * removal of next header.
6388 */
6389 old_idx = cur_idx;
6390 }
6391 return 0;
6392}
6393
6394
6395/* Apply the filter to the status line in the response buffer <rtr>.
6396 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6397 * or -1 if a replacement resulted in an invalid status line.
6398 */
Willy Tarreau87b09662015-04-03 00:22:06 +02006399int apply_filter_to_sts_line(struct stream *s, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +01006400{
Willy Tarreaua15645d2007-03-18 16:22:39 +01006401 char *cur_ptr, *cur_end;
6402 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +02006403 struct http_txn *txn = s->txn;
Willy Tarreau6e27be12018-08-22 04:46:47 +02006404 int delta, len;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006405
Willy Tarreau3d300592007-03-18 18:34:41 +01006406 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +01006407 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +01006408 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +01006409 (exp->action == ACT_ALLOW ||
6410 exp->action == ACT_DENY))
6411 return 0;
6412 else if (exp->action == ACT_REMOVE)
6413 return 0;
6414
6415 done = 0;
6416
Willy Tarreauf37954d2018-06-15 18:31:02 +02006417 cur_ptr = ci_head(rtr);
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +02006418 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006419
6420 /* Now we have the status line between cur_ptr and cur_end */
6421
Willy Tarreau15a53a42015-01-21 13:39:42 +01006422 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +01006423 switch (exp->action) {
6424 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +01006425 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006426 done = 1;
6427 break;
6428
6429 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +01006430 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006431 done = 1;
6432 break;
6433
6434 case ACT_REPLACE:
Willy Tarreau6e27be12018-08-22 04:46:47 +02006435 len = exp_replace(trash.area, trash.size,
6436 cur_ptr, exp->replace, pmatch);
6437 if (len < 0)
Sasha Pachevc6002042014-05-26 12:33:48 -06006438 return -1;
6439
Willy Tarreau6e27be12018-08-22 04:46:47 +02006440 delta = b_rep_blk(&rtr->buf, cur_ptr, cur_end, trash.area, len);
6441
Willy Tarreaua15645d2007-03-18 16:22:39 +01006442 /* FIXME: if the user adds a newline in the replacement, the
6443 * index will not be recalculated for now, and the new line
6444 * will not be counted as a new header.
6445 */
6446
Willy Tarreaufa355d42009-11-29 18:12:29 +01006447 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +01006448 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +02006449 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +02006450 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +01006451 cur_ptr, cur_end + 1,
6452 NULL, NULL);
6453 if (unlikely(!cur_end))
6454 return -1;
6455
6456 /* we have a full respnse and we know that we have either a CR
6457 * or an LF at <ptr>.
6458 */
Willy Tarreauf37954d2018-06-15 18:31:02 +02006459 txn->status = strl2ui(ci_head(rtr) + txn->rsp.sl.st.c, txn->rsp.sl.st.c_l);
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +02006460 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.st.l, *cur_end == '\r');
Willy Tarreaua15645d2007-03-18 16:22:39 +01006461 /* there is no point trying this regex on headers */
6462 return 1;
6463 }
6464 }
Willy Tarreaua15645d2007-03-18 16:22:39 +01006465 return done;
6466}
6467
6468
6469
6470/*
Willy Tarreau87b09662015-04-03 00:22:06 +02006471 * Apply all the resp filters of proxy <px> to all headers in buffer <rtr> of stream <s>.
Willy Tarreaua15645d2007-03-18 16:22:39 +01006472 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6473 * unparsable response.
6474 */
Willy Tarreau87b09662015-04-03 00:22:06 +02006475int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +01006476{
Willy Tarreau192252e2015-04-04 01:47:55 +02006477 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +02006478 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +01006479 struct hdr_exp *exp;
6480
6481 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +01006482 int ret;
6483
6484 /*
6485 * The interleaving of transformations and verdicts
6486 * makes it difficult to decide to continue or stop
6487 * the evaluation.
6488 */
6489
Willy Tarreaufdb563c2010-01-31 15:43:27 +01006490 if (txn->flags & TX_SVDENY)
6491 break;
6492
Willy Tarreau3d300592007-03-18 18:34:41 +01006493 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +01006494 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6495 exp->action == ACT_PASS)) {
6496 exp = exp->next;
6497 continue;
6498 }
6499
Willy Tarreaufdb563c2010-01-31 15:43:27 +01006500 /* if this filter had a condition, evaluate it now and skip to
6501 * next filter if the condition does not match.
6502 */
6503 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +02006504 ret = acl_exec_cond(exp->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Willy Tarreaufdb563c2010-01-31 15:43:27 +01006505 ret = acl_pass(ret);
6506 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6507 ret = !ret;
6508 if (!ret)
6509 continue;
6510 }
6511
Willy Tarreaua15645d2007-03-18 16:22:39 +01006512 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +01006513 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +01006514 if (unlikely(ret < 0))
6515 return -1;
6516
6517 if (likely(ret == 0)) {
6518 /* The filter did not match the response, it can be
6519 * iterated through all headers.
6520 */
Sasha Pachevc6002042014-05-26 12:33:48 -06006521 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
6522 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006523 }
Willy Tarreaua15645d2007-03-18 16:22:39 +01006524 }
6525 return 0;
6526}
6527
6528
Willy Tarreaua15645d2007-03-18 16:22:39 +01006529/*
Willy Tarreau396d2c62007-11-04 19:30:00 +01006530 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +02006531 * desirable to call it only when needed. This function is also used when we
6532 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +01006533 */
Willy Tarreau87b09662015-04-03 00:22:06 +02006534void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +01006535{
Willy Tarreaueee5b512015-04-03 23:46:31 +02006536 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02006537 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +01006538 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +02006539 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006540 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +02006541 char *hdr_beg, *hdr_end, *hdr_next;
6542 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006543
Willy Tarreaua15645d2007-03-18 16:22:39 +01006544 /* Iterate through the headers.
6545 * we start with the start line.
6546 */
6547 old_idx = 0;
Willy Tarreauf37954d2018-06-15 18:31:02 +02006548 hdr_next = ci_head(res) + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +01006549
6550 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
6551 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +01006552 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006553
6554 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +02006555 hdr_beg = hdr_next;
6556 hdr_end = hdr_beg + cur_hdr->len;
6557 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006558
Willy Tarreau24581ba2010-08-31 22:39:35 +02006559 /* We have one full header between hdr_beg and hdr_end, and the
6560 * next header starts at hdr_next. We're only interested in
6561 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +01006562 */
6563
Willy Tarreau24581ba2010-08-31 22:39:35 +02006564 is_cookie2 = 0;
6565 prev = hdr_beg + 10;
6566 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +01006567 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +02006568 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
6569 if (!val) {
6570 old_idx = cur_idx;
6571 continue;
6572 }
6573 is_cookie2 = 1;
6574 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006575 }
6576
Willy Tarreau24581ba2010-08-31 22:39:35 +02006577 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
6578 * <prev> points to the colon.
6579 */
Willy Tarreauf1348312010-10-07 15:54:11 +02006580 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006581
Willy Tarreau24581ba2010-08-31 22:39:35 +02006582 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
6583 * check-cache is enabled) and we are not interested in checking
6584 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +02006585 */
Willy Tarreau53a09d52015-08-10 18:59:40 +02006586 if (s->be->cookie_name == NULL && sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +01006587 return;
6588
Willy Tarreau24581ba2010-08-31 22:39:35 +02006589 /* OK so now we know we have to process this response cookie.
6590 * The format of the Set-Cookie header is slightly different
6591 * from the format of the Cookie header in that it does not
6592 * support the comma as a cookie delimiter (thus the header
6593 * cannot be folded) because the Expires attribute described in
6594 * the original Netscape's spec may contain an unquoted date
6595 * with a comma inside. We have to live with this because
6596 * many browsers don't support Max-Age and some browsers don't
6597 * support quoted strings. However the Set-Cookie2 header is
6598 * clean.
6599 *
6600 * We have to keep multiple pointers in order to support cookie
6601 * removal at the beginning, middle or end of header without
6602 * corrupting the header (in case of set-cookie2). A special
6603 * pointer, <scav> points to the beginning of the set-cookie-av
6604 * fields after the first semi-colon. The <next> pointer points
6605 * either to the end of line (set-cookie) or next unquoted comma
6606 * (set-cookie2). All of these headers are valid :
6607 *
6608 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
6609 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
6610 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
6611 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
6612 * | | | | | | | | | |
6613 * | | | | | | | | +-> next hdr_end <--+
6614 * | | | | | | | +------------> scav
6615 * | | | | | | +--------------> val_end
6616 * | | | | | +--------------------> val_beg
6617 * | | | | +----------------------> equal
6618 * | | | +------------------------> att_end
6619 * | | +----------------------------> att_beg
6620 * | +------------------------------> prev
6621 * +-----------------------------------------> hdr_beg
6622 */
Willy Tarreaua15645d2007-03-18 16:22:39 +01006623
Willy Tarreau24581ba2010-08-31 22:39:35 +02006624 for (; prev < hdr_end; prev = next) {
6625 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +01006626
Willy Tarreau24581ba2010-08-31 22:39:35 +02006627 /* find att_beg */
6628 att_beg = prev + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +01006629 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreau24581ba2010-08-31 22:39:35 +02006630 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006631
Willy Tarreau24581ba2010-08-31 22:39:35 +02006632 /* find att_end : this is the first character after the last non
6633 * space before the equal. It may be equal to hdr_end.
6634 */
6635 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006636
Willy Tarreau24581ba2010-08-31 22:39:35 +02006637 while (equal < hdr_end) {
6638 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
6639 break;
Willy Tarreau2235b262016-11-05 15:50:20 +01006640 if (HTTP_IS_SPHT(*equal++))
Willy Tarreau24581ba2010-08-31 22:39:35 +02006641 continue;
6642 att_end = equal;
6643 }
Willy Tarreaua15645d2007-03-18 16:22:39 +01006644
Willy Tarreau24581ba2010-08-31 22:39:35 +02006645 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6646 * is between <att_beg> and <equal>, both may be identical.
6647 */
6648
6649 /* look for end of cookie if there is an equal sign */
6650 if (equal < hdr_end && *equal == '=') {
6651 /* look for the beginning of the value */
6652 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +01006653 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreau24581ba2010-08-31 22:39:35 +02006654 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006655
Willy Tarreau24581ba2010-08-31 22:39:35 +02006656 /* find the end of the value, respecting quotes */
Willy Tarreauab813a42018-09-10 18:41:28 +02006657 next = http_find_cookie_value_end(val_beg, hdr_end);
Willy Tarreau24581ba2010-08-31 22:39:35 +02006658
6659 /* make val_end point to the first white space or delimitor after the value */
6660 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +01006661 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreau24581ba2010-08-31 22:39:35 +02006662 val_end--;
6663 } else {
6664 /* <equal> points to next comma, semi-colon or EOL */
6665 val_beg = val_end = next = equal;
6666 }
6667
6668 if (next < hdr_end) {
6669 /* Set-Cookie2 supports multiple cookies, and <next> points to
6670 * a colon or semi-colon before the end. So skip all attr-value
6671 * pairs and look for the next comma. For Set-Cookie, since
6672 * commas are permitted in values, skip to the end.
6673 */
6674 if (is_cookie2)
Willy Tarreauab813a42018-09-10 18:41:28 +02006675 next = http_find_hdr_value_end(next, hdr_end);
Willy Tarreau24581ba2010-08-31 22:39:35 +02006676 else
6677 next = hdr_end;
6678 }
6679
6680 /* Now everything is as on the diagram above */
6681
6682 /* Ignore cookies with no equal sign */
6683 if (equal == val_end)
6684 continue;
6685
6686 /* If there are spaces around the equal sign, we need to
6687 * strip them otherwise we'll get trouble for cookie captures,
6688 * or even for rewrites. Since this happens extremely rarely,
6689 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +01006690 */
Willy Tarreau24581ba2010-08-31 22:39:35 +02006691 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6692 int stripped_before = 0;
6693 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006694
Willy Tarreau24581ba2010-08-31 22:39:35 +02006695 if (att_end != equal) {
Willy Tarreauc9fa0482018-07-10 17:43:27 +02006696 stripped_before = b_rep_blk(&res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +02006697 equal += stripped_before;
6698 val_beg += stripped_before;
6699 }
6700
6701 if (val_beg > equal + 1) {
Willy Tarreauc9fa0482018-07-10 17:43:27 +02006702 stripped_after = b_rep_blk(&res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +02006703 val_beg += stripped_after;
6704 stripped_before += stripped_after;
6705 }
6706
6707 val_end += stripped_before;
6708 next += stripped_before;
6709 hdr_end += stripped_before;
6710 hdr_next += stripped_before;
6711 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +02006712 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +02006713 }
6714
6715 /* First, let's see if we want to capture this cookie. We check
6716 * that we don't already have a server side cookie, because we
6717 * can only capture one. Also as an optimisation, we ignore
6718 * cookies shorter than the declared name.
6719 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02006720 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +01006721 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02006722 (val_end - att_beg >= sess->fe->capture_namelen) &&
6723 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +02006724 int log_len = val_end - att_beg;
Willy Tarreaubafbe012017-11-24 17:34:44 +01006725 if ((txn->srv_cookie = pool_alloc(pool_head_capture)) == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01006726 ha_alert("HTTP logging : out of memory.\n");
Willy Tarreaua15645d2007-03-18 16:22:39 +01006727 }
Willy Tarreauf70fc752010-11-19 11:27:18 +01006728 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02006729 if (log_len > sess->fe->capture_len)
6730 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +01006731 memcpy(txn->srv_cookie, att_beg, log_len);
6732 txn->srv_cookie[log_len] = 0;
6733 }
Willy Tarreaua15645d2007-03-18 16:22:39 +01006734 }
6735
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02006736 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +01006737 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +02006738 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02006739 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
6740 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +02006741 /* assume passive cookie by default */
6742 txn->flags &= ~TX_SCK_MASK;
6743 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006744
6745 /* If the cookie is in insert mode on a known server, we'll delete
6746 * this occurrence because we'll insert another one later.
6747 * We'll delete it too if the "indirect" option is set and we're in
Willy Tarreau24581ba2010-08-31 22:39:35 +02006748 * a direct access.
6749 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02006750 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +02006751 /* The "preserve" flag was set, we don't want to touch the
6752 * server's cookie.
6753 */
6754 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02006755 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +02006756 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +02006757 /* this cookie must be deleted */
6758 if (*prev == ':' && next == hdr_end) {
6759 /* whole header */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02006760 delta = b_rep_blk(&res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +02006761 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6762 txn->hdr_idx.used--;
6763 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +01006764 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +02006765 hdr_next += delta;
6766 http_msg_move_end(&txn->rsp, delta);
6767 /* note: while both invalid now, <next> and <hdr_end>
6768 * are still equal, so the for() will stop as expected.
6769 */
6770 } else {
6771 /* just remove the value */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02006772 int delta = del_hdr_value(&res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +02006773 next = prev;
6774 hdr_end += delta;
6775 hdr_next += delta;
6776 cur_hdr->len += delta;
6777 http_msg_move_end(&txn->rsp, delta);
6778 }
Willy Tarreauf1348312010-10-07 15:54:11 +02006779 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +01006780 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +02006781 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +01006782 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02006783 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +02006784 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +01006785 * with this server since we know it.
6786 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02006787 delta = b_rep_blk(&res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +02006788 next += delta;
6789 hdr_end += delta;
6790 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006791 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +01006792 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +01006793
Willy Tarreauf1348312010-10-07 15:54:11 +02006794 txn->flags &= ~TX_SCK_MASK;
6795 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006796 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02006797 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +01006798 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +02006799 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +01006800 */
Willy Tarreauc9fa0482018-07-10 17:43:27 +02006801 delta = b_rep_blk(&res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +02006802 next += delta;
6803 hdr_end += delta;
6804 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006805 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +01006806 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +01006807
Willy Tarreau827aee92011-03-10 16:55:02 +01006808 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +02006809 txn->flags &= ~TX_SCK_MASK;
6810 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006811 }
6812 }
Willy Tarreau24581ba2010-08-31 22:39:35 +02006813 /* that's done for this cookie, check the next one on the same
6814 * line when next != hdr_end (only if is_cookie2).
6815 */
6816 }
6817 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +01006818 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +02006819 }
Willy Tarreaua15645d2007-03-18 16:22:39 +01006820}
6821
6822
Willy Tarreaua15645d2007-03-18 16:22:39 +01006823/*
Willy Tarreau0ad8e0d2017-12-22 15:03:36 +01006824 * Parses the Cache-Control and Pragma request header fields to determine if
6825 * the request may be served from the cache and/or if it is cacheable. Updates
6826 * s->txn->flags.
6827 */
6828void check_request_for_cacheability(struct stream *s, struct channel *chn)
6829{
6830 struct http_txn *txn = s->txn;
6831 char *p1, *p2;
6832 char *cur_ptr, *cur_end, *cur_next;
6833 int pragma_found;
6834 int cc_found;
6835 int cur_idx;
6836
Christopher Faulet25a02f62018-10-24 12:00:25 +02006837 if (IS_HTX_STRM(s))
6838 return htx_check_request_for_cacheability(s, chn);
6839
Willy Tarreau0ad8e0d2017-12-22 15:03:36 +01006840 if ((txn->flags & (TX_CACHEABLE|TX_CACHE_IGNORE)) == TX_CACHE_IGNORE)
6841 return; /* nothing more to do here */
6842
6843 cur_idx = 0;
6844 pragma_found = cc_found = 0;
Willy Tarreauf37954d2018-06-15 18:31:02 +02006845 cur_next = ci_head(chn) + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau0ad8e0d2017-12-22 15:03:36 +01006846
6847 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
6848 struct hdr_idx_elem *cur_hdr;
6849 int val;
6850
6851 cur_hdr = &txn->hdr_idx.v[cur_idx];
6852 cur_ptr = cur_next;
6853 cur_end = cur_ptr + cur_hdr->len;
6854 cur_next = cur_end + cur_hdr->cr + 1;
6855
6856 /* We have one full header between cur_ptr and cur_end, and the
6857 * next header starts at cur_next.
6858 */
6859
6860 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
6861 if (val) {
6862 if ((cur_end - (cur_ptr + val) >= 8) &&
6863 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
6864 pragma_found = 1;
6865 continue;
6866 }
6867 }
6868
William Lallemand8a16fe02018-05-22 11:04:33 +02006869 /* Don't use the cache and don't try to store if we found the
6870 * Authorization header */
6871 val = http_header_match2(cur_ptr, cur_end, "Authorization", 13);
6872 if (val) {
6873 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
6874 txn->flags |= TX_CACHE_IGNORE;
6875 continue;
6876 }
6877
Willy Tarreau0ad8e0d2017-12-22 15:03:36 +01006878 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
6879 if (!val)
6880 continue;
6881
6882 /* OK, right now we know we have a cache-control header at cur_ptr */
6883 cc_found = 1;
6884 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
6885
6886 if (p1 >= cur_end) /* no more info */
6887 continue;
6888
6889 /* p1 is at the beginning of the value */
6890 p2 = p1;
6891 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
6892 p2++;
6893
6894 /* we have a complete value between p1 and p2. We don't check the
6895 * values after max-age, max-stale nor min-fresh, we simply don't
6896 * use the cache when they're specified.
6897 */
6898 if (((p2 - p1 == 7) && strncasecmp(p1, "max-age", 7) == 0) ||
6899 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
6900 ((p2 - p1 == 9) && strncasecmp(p1, "max-stale", 9) == 0) ||
6901 ((p2 - p1 == 9) && strncasecmp(p1, "min-fresh", 9) == 0)) {
6902 txn->flags |= TX_CACHE_IGNORE;
6903 continue;
6904 }
6905
6906 if ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) {
6907 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
6908 continue;
6909 }
6910 }
6911
6912 /* RFC7234#5.4:
6913 * When the Cache-Control header field is also present and
6914 * understood in a request, Pragma is ignored.
6915 * When the Cache-Control header field is not present in a
6916 * request, caches MUST consider the no-cache request
6917 * pragma-directive as having the same effect as if
6918 * "Cache-Control: no-cache" were present.
6919 */
6920 if (!cc_found && pragma_found)
6921 txn->flags |= TX_CACHE_IGNORE;
6922}
6923
6924/*
Willy Tarreaud3900cc2017-12-22 15:35:11 +01006925 * Check if response is cacheable or not. Updates s->txn->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +01006926 */
Willy Tarreau87b09662015-04-03 00:22:06 +02006927void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +01006928{
Willy Tarreaueee5b512015-04-03 23:46:31 +02006929 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006930 char *p1, *p2;
6931
6932 char *cur_ptr, *cur_end, *cur_next;
6933 int cur_idx;
6934
Christopher Faulet25a02f62018-10-24 12:00:25 +02006935
6936 if (IS_HTX_STRM(s))
6937 return htx_check_response_for_cacheability(s, rtr);
6938
Willy Tarreau12b32f22017-12-21 16:08:09 +01006939 if (txn->status < 200) {
6940 /* do not try to cache interim responses! */
6941 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006942 return;
Willy Tarreau12b32f22017-12-21 16:08:09 +01006943 }
Willy Tarreaua15645d2007-03-18 16:22:39 +01006944
6945 /* Iterate through the headers.
6946 * we start with the start line.
6947 */
6948 cur_idx = 0;
Willy Tarreauf37954d2018-06-15 18:31:02 +02006949 cur_next = ci_head(rtr) + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +01006950
6951 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
6952 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +01006953 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +01006954
6955 cur_hdr = &txn->hdr_idx.v[cur_idx];
6956 cur_ptr = cur_next;
6957 cur_end = cur_ptr + cur_hdr->len;
6958 cur_next = cur_end + cur_hdr->cr + 1;
6959
6960 /* We have one full header between cur_ptr and cur_end, and the
Willy Tarreaud3900cc2017-12-22 15:35:11 +01006961 * next header starts at cur_next.
Willy Tarreaua15645d2007-03-18 16:22:39 +01006962 */
6963
Willy Tarreauaa9dce32007-03-18 23:50:16 +01006964 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
6965 if (val) {
6966 if ((cur_end - (cur_ptr + val) >= 8) &&
6967 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
6968 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
6969 return;
6970 }
Willy Tarreaua15645d2007-03-18 16:22:39 +01006971 }
6972
Willy Tarreauaa9dce32007-03-18 23:50:16 +01006973 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
6974 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +01006975 continue;
6976
6977 /* OK, right now we know we have a cache-control header at cur_ptr */
6978
Willy Tarreauaa9dce32007-03-18 23:50:16 +01006979 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +01006980
6981 if (p1 >= cur_end) /* no more info */
6982 continue;
6983
6984 /* p1 is at the beginning of the value */
6985 p2 = p1;
6986
Willy Tarreau8f8e6452007-06-17 21:51:38 +02006987 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +01006988 p2++;
6989
6990 /* we have a complete value between p1 and p2 */
6991 if (p2 < cur_end && *p2 == '=') {
Willy Tarreaud3900cc2017-12-22 15:35:11 +01006992 if (((cur_end - p2) > 1 && (p2 - p1 == 7) && strncasecmp(p1, "max-age=0", 9) == 0) ||
6993 ((cur_end - p2) > 1 && (p2 - p1 == 8) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
6994 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
6995 continue;
6996 }
6997
Willy Tarreaua15645d2007-03-18 16:22:39 +01006998 /* we have something of the form no-cache="set-cookie" */
6999 if ((cur_end - p1 >= 21) &&
7000 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7001 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +01007002 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +01007003 continue;
7004 }
7005
7006 /* OK, so we know that either p2 points to the end of string or to a comma */
7007 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +02007008 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaud3900cc2017-12-22 15:35:11 +01007009 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +01007010 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +01007011 return;
7012 }
7013
7014 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +01007015 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +01007016 continue;
7017 }
7018 }
7019}
7020
Willy Tarreau58f10d72006-12-04 02:26:12 +01007021
Willy Tarreaub2513902006-12-17 14:52:38 +01007022/*
Cyril Bonté70be45d2010-10-12 00:14:35 +02007023 * In a GET, HEAD or POST request, check if the requested URI matches the stats uri
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01007024 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +01007025 *
Cyril Bonté70be45d2010-10-12 00:14:35 +02007026 * It is assumed that the request is either a HEAD, GET, or POST and that the
Willy Tarreau295a8372011-03-10 11:25:07 +01007027 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +01007028 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01007029 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +01007030 */
Willy Tarreau295a8372011-03-10 11:25:07 +01007031int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +01007032{
7033 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +01007034 struct http_msg *msg = &txn->req;
Willy Tarreauf37954d2018-06-15 18:31:02 +02007035 const char *uri = ci_head(msg->chn)+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +01007036
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01007037 if (!uri_auth)
7038 return 0;
7039
Cyril Bonté70be45d2010-10-12 00:14:35 +02007040 if (txn->meth != HTTP_METH_GET && txn->meth != HTTP_METH_HEAD && txn->meth != HTTP_METH_POST)
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01007041 return 0;
7042
Willy Tarreau8d5d7f22007-01-21 19:16:41 +01007043 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +01007044 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +01007045 return 0;
7046
Willy Tarreau414e9bb2013-11-23 00:30:38 +01007047 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +01007048 return 0;
7049
Willy Tarreaub2513902006-12-17 14:52:38 +01007050 return 1;
7051}
7052
Willy Tarreau7ccdd8d2018-09-07 14:01:39 +02007053/* Append the description of what is present in error snapshot <es> into <out>.
7054 * The description must be small enough to always fit in a trash. The output
7055 * buffer may be the trash so the trash must not be used inside this function.
7056 */
7057void http_show_error_snapshot(struct buffer *out, const struct error_snapshot *es)
7058{
Christopher Fauleted26fb82018-11-29 22:53:30 +01007059 chunk_appendf(out,
Willy Tarreau7ccdd8d2018-09-07 14:01:39 +02007060 " stream #%d, stream flags 0x%08x, tx flags 0x%08x\n"
7061 " HTTP msg state %s(%d), msg flags 0x%08x\n"
7062 " HTTP chunk len %lld bytes, HTTP body len %lld bytes, channel flags 0x%08x :\n",
7063 es->ctx.http.sid, es->ctx.http.s_flags, es->ctx.http.t_flags,
7064 h1_msg_state_str(es->ctx.http.state), es->ctx.http.state,
7065 es->ctx.http.m_flags, es->ctx.http.m_clen,
7066 es->ctx.http.m_blen, es->ctx.http.b_flags);
7067}
7068
Willy Tarreau4076a152009-04-02 15:18:36 +02007069/*
7070 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +02007071 * By default it tries to report the error position as msg->err_pos. However if
7072 * this one is not set, it will then report msg->next, which is the last known
7073 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaufd9419d2018-09-07 18:01:03 +02007074 * displays buffers as a contiguous area starting at buf->p. The direction is
7075 * determined thanks to the channel's flags.
Willy Tarreau4076a152009-04-02 15:18:36 +02007076 */
Willy Tarreaufd9419d2018-09-07 18:01:03 +02007077void http_capture_bad_message(struct proxy *proxy, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +01007078 struct http_msg *msg,
Willy Tarreau0da5b3b2017-09-21 09:30:46 +02007079 enum h1_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +02007080{
Willy Tarreauef3ca732018-09-07 15:47:35 +02007081 union error_snapshot_ctx ctx;
7082 long ofs;
Willy Tarreau8a0cef22012-03-09 13:39:23 +01007083
Willy Tarreauef3ca732018-09-07 15:47:35 +02007084 /* http-specific part now */
7085 ctx.http.sid = s->uniq_id;
7086 ctx.http.state = state;
7087 ctx.http.b_flags = msg->chn->flags;
7088 ctx.http.s_flags = s->flags;
7089 ctx.http.t_flags = s->txn->flags;
7090 ctx.http.m_flags = msg->flags;
7091 ctx.http.m_clen = msg->chunk_len;
7092 ctx.http.m_blen = msg->body_len;
Willy Tarreau7480f322018-09-06 19:41:22 +02007093
Willy Tarreauef3ca732018-09-07 15:47:35 +02007094 ofs = msg->chn->total - ci_data(msg->chn);
7095 if (ofs < 0)
7096 ofs = 0;
Willy Tarreau0b5b4802018-09-07 13:49:44 +02007097
Willy Tarreaufd9419d2018-09-07 18:01:03 +02007098 proxy_capture_error(proxy, !!(msg->chn->flags & CF_ISRESP),
Willy Tarreauef3ca732018-09-07 15:47:35 +02007099 other_end, s->target,
7100 strm_sess(s), &msg->chn->buf,
7101 ofs, co_data(msg->chn),
7102 (msg->err_pos >= 0) ? msg->err_pos : msg->next,
7103 &ctx, http_show_error_snapshot);
Willy Tarreau4076a152009-04-02 15:18:36 +02007104}
Willy Tarreaub2513902006-12-17 14:52:38 +01007105
Willy Tarreaubaaee002006-06-26 02:48:02 +02007106/*
Willy Tarreaue92693a2012-09-24 21:13:39 +02007107 * Print a debug line with a header. Always stop at the first CR or LF char,
7108 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7109 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +01007110 */
Willy Tarreau87b09662015-04-03 00:22:06 +02007111void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +01007112{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +02007113 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +01007114 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +02007115
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +02007116 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +02007117 dir,
Willy Tarreau585744b2017-08-24 14:31:19 +02007118 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->handle.fd : -1,
Olivier Houchard9aaf7782017-09-13 18:30:23 +02007119 objt_cs(s->si[1].end) ? (unsigned short)objt_cs(s->si[1].end)->conn->handle.fd : -1);
Willy Tarreaue92693a2012-09-24 21:13:39 +02007120
7121 for (max = 0; start + max < end; max++)
7122 if (start[max] == '\r' || start[max] == '\n')
7123 break;
7124
Willy Tarreau843b7cb2018-07-13 10:54:26 +02007125 UBOUND(max, trash.size - trash.data - 3);
7126 trash.data += strlcpy2(trash.area + trash.data, start, max + 1);
7127 trash.area[trash.data++] = '\n';
7128 shut_your_big_mouth_gcc(write(1, trash.area, trash.data));
Willy Tarreau58f10d72006-12-04 02:26:12 +01007129}
7130
Willy Tarreaueee5b512015-04-03 23:46:31 +02007131
7132/* Allocate a new HTTP transaction for stream <s> unless there is one already.
7133 * The hdr_idx is allocated as well. In case of allocation failure, everything
7134 * allocated is freed and NULL is returned. Otherwise the new transaction is
7135 * assigned to the stream and returned.
7136 */
7137struct http_txn *http_alloc_txn(struct stream *s)
7138{
7139 struct http_txn *txn = s->txn;
7140
7141 if (txn)
7142 return txn;
7143
Willy Tarreaubafbe012017-11-24 17:34:44 +01007144 txn = pool_alloc(pool_head_http_txn);
Willy Tarreaueee5b512015-04-03 23:46:31 +02007145 if (!txn)
7146 return txn;
7147
7148 txn->hdr_idx.size = global.tune.max_http_hdr;
Willy Tarreaubafbe012017-11-24 17:34:44 +01007149 txn->hdr_idx.v = pool_alloc(pool_head_hdr_idx);
Willy Tarreaueee5b512015-04-03 23:46:31 +02007150 if (!txn->hdr_idx.v) {
Willy Tarreaubafbe012017-11-24 17:34:44 +01007151 pool_free(pool_head_http_txn, txn);
Willy Tarreaueee5b512015-04-03 23:46:31 +02007152 return NULL;
7153 }
7154
7155 s->txn = txn;
7156 return txn;
7157}
7158
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +02007159void http_txn_reset_req(struct http_txn *txn)
7160{
7161 txn->req.flags = 0;
7162 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
7163 txn->req.next = 0;
7164 txn->req.chunk_len = 0LL;
7165 txn->req.body_len = 0LL;
7166 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7167}
7168
7169void http_txn_reset_res(struct http_txn *txn)
7170{
7171 txn->rsp.flags = 0;
7172 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
7173 txn->rsp.next = 0;
7174 txn->rsp.chunk_len = 0LL;
7175 txn->rsp.body_len = 0LL;
7176 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
7177}
7178
Willy Tarreau0937bc42009-12-22 15:03:09 +01007179/*
Willy Tarreau87b09662015-04-03 00:22:06 +02007180 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +01007181 * the required fields are properly allocated and that we only need to (re)init
7182 * them. This should be used before processing any new request.
7183 */
Willy Tarreau87b09662015-04-03 00:22:06 +02007184void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +01007185{
Willy Tarreaueee5b512015-04-03 23:46:31 +02007186 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +02007187 struct proxy *fe = strm_fe(s);
Christopher Fauletf2824e62018-10-01 12:12:37 +02007188 struct conn_stream *cs = objt_cs(s->si[0].end);
Willy Tarreau0937bc42009-12-22 15:03:09 +01007189
Christopher Fauletf2824e62018-10-01 12:12:37 +02007190 txn->flags = ((cs && cs->flags & CS_FL_NOT_FIRST)
7191 ? (TX_NOT_FIRST|TX_WAIT_NEXT_RQ)
7192 : 0);
Willy Tarreau0937bc42009-12-22 15:03:09 +01007193 txn->status = -1;
Willy Tarreauc9036c02019-01-11 19:38:25 +01007194 *(unsigned int *)txn->cache_hash = 0;
Willy Tarreau0937bc42009-12-22 15:03:09 +01007195
Willy Tarreauf64d1412010-10-07 20:06:11 +02007196 txn->cookie_first_date = 0;
7197 txn->cookie_last_date = 0;
7198
Willy Tarreaueee5b512015-04-03 23:46:31 +02007199 txn->srv_cookie = NULL;
7200 txn->cli_cookie = NULL;
7201 txn->uri = NULL;
7202
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +02007203 http_txn_reset_req(txn);
7204 http_txn_reset_res(txn);
7205
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01007206 txn->req.chn = &s->req;
7207 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01007208
7209 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +01007210
7211 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7212 if (fe->options2 & PR_O2_REQBUG_OK)
7213 txn->req.err_pos = -1; /* let buggy requests pass */
7214
Willy Tarreau0937bc42009-12-22 15:03:09 +01007215 if (txn->hdr_idx.v)
7216 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +02007217
7218 vars_init(&s->vars_txn, SCOPE_TXN);
7219 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +01007220}
7221
7222/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +02007223void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +01007224{
Willy Tarreaueee5b512015-04-03 23:46:31 +02007225 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +02007226 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +01007227
7228 /* these ones will have been dynamically allocated */
Willy Tarreaubafbe012017-11-24 17:34:44 +01007229 pool_free(pool_head_requri, txn->uri);
7230 pool_free(pool_head_capture, txn->cli_cookie);
7231 pool_free(pool_head_capture, txn->srv_cookie);
7232 pool_free(pool_head_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +01007233
William Lallemanda73203e2012-03-12 12:48:57 +01007234 s->unique_id = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +01007235 txn->uri = NULL;
7236 txn->srv_cookie = NULL;
7237 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +01007238
Willy Tarreaucb7dd012015-04-03 22:16:32 +02007239 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +01007240 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02007241 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaubafbe012017-11-24 17:34:44 +01007242 pool_free(h->pool, s->req_cap[h->index]);
Willy Tarreaucb7dd012015-04-03 22:16:32 +02007243 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +01007244 }
7245
Willy Tarreaucb7dd012015-04-03 22:16:32 +02007246 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +01007247 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +02007248 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaubafbe012017-11-24 17:34:44 +01007249 pool_free(h->pool, s->res_cap[h->index]);
Willy Tarreaucb7dd012015-04-03 22:16:32 +02007250 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +01007251 }
7252
Willy Tarreaucda7f3f2018-10-28 13:44:36 +01007253 if (!LIST_ISEMPTY(&s->vars_txn.head))
7254 vars_prune(&s->vars_txn, s->sess, s);
7255 if (!LIST_ISEMPTY(&s->vars_reqres.head))
7256 vars_prune(&s->vars_reqres, s->sess, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +01007257}
7258
7259/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +02007260void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +01007261{
7262 http_end_txn(s);
7263 http_init_txn(s);
7264
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +01007265 /* reinitialise the current rule list pointer to NULL. We are sure that
7266 * any rulelist match the NULL pointer.
7267 */
7268 s->current_rule_list = NULL;
7269
Willy Tarreaud0d8da92015-04-04 02:10:38 +02007270 s->be = strm_fe(s);
7271 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +02007272 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +02007273 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +01007274 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +01007275 /* re-init store persistence */
7276 s->store_count = 0;
Olivier Houcharda798bf52019-03-08 18:52:00 +01007277 s->uniq_id = _HA_ATOMIC_XADD(&global.req_count, 1);
Emeric Brunb982a3d2010-01-04 15:45:53 +01007278
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01007279 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +01007280
Willy Tarreau739cfba2010-01-25 23:11:14 +01007281 /* We must trim any excess data from the response buffer, because we
7282 * may have blocked an invalid response from a server that we don't
Joseph Herlant5ba80252018-11-15 09:25:36 -08007283 * want to accidently forward once we disable the analysers, nor do
Willy Tarreau739cfba2010-01-25 23:11:14 +01007284 * we want those data to come along with next response. A typical
7285 * example of such data would be from a buggy server responding to
7286 * a HEAD with some data, or sending more than the advertised
7287 * content-length.
7288 */
Willy Tarreauf37954d2018-06-15 18:31:02 +02007289 if (unlikely(ci_data(&s->res)))
Willy Tarreauc9fa0482018-07-10 17:43:27 +02007290 b_set_data(&s->res.buf, co_data(&s->res));
Willy Tarreau739cfba2010-01-25 23:11:14 +01007291
Christopher Fauletc0c672a2017-03-28 11:51:33 +02007292 /* Now we can realign the response buffer */
Willy Tarreaud5b343b2018-06-06 06:42:46 +02007293 c_realign_if_empty(&s->res);
Christopher Fauletc0c672a2017-03-28 11:51:33 +02007294
Willy Tarreaud0d8da92015-04-04 02:10:38 +02007295 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01007296 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +01007297
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01007298 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +02007299 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +01007300
Willy Tarreau22ec1ea2014-11-27 20:45:39 +01007301 s->req.rex = TICK_ETERNITY;
7302 s->req.wex = TICK_ETERNITY;
7303 s->req.analyse_exp = TICK_ETERNITY;
7304 s->res.rex = TICK_ETERNITY;
7305 s->res.wex = TICK_ETERNITY;
7306 s->res.analyse_exp = TICK_ETERNITY;
Hongbo Longe39683c2017-03-10 18:41:51 +01007307 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +01007308}
Willy Tarreau58f10d72006-12-04 02:26:12 +01007309
Willy Tarreau79e57332018-10-02 16:01:16 +02007310/* This function executes one of the set-{method,path,query,uri} actions. It
7311 * takes the string from the variable 'replace' with length 'len', then modifies
7312 * the relevant part of the request line accordingly. Then it updates various
7313 * pointers to the next elements which were moved, and the total buffer length.
7314 * It finds the action to be performed in p[2], previously filled by function
7315 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
7316 * error, though this can be revisited when this code is finally exploited.
7317 *
7318 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
7319 * query string and 3 to replace uri.
Willy Tarreau14174bc2012-04-16 14:34:04 +02007320 *
Willy Tarreau79e57332018-10-02 16:01:16 +02007321 * In query string case, the mark question '?' must be set at the start of the
7322 * string by the caller, event if the replacement query string is empty.
Willy Tarreau14174bc2012-04-16 14:34:04 +02007323 */
Willy Tarreau79e57332018-10-02 16:01:16 +02007324int http_replace_req_line(int action, const char *replace, int len,
7325 struct proxy *px, struct stream *s)
Willy Tarreau14174bc2012-04-16 14:34:04 +02007326{
Willy Tarreau79e57332018-10-02 16:01:16 +02007327 struct http_txn *txn = s->txn;
7328 char *cur_ptr, *cur_end;
7329 int offset = 0;
7330 int delta;
Willy Tarreau14174bc2012-04-16 14:34:04 +02007331
Christopher Faulet8d8ac192018-10-24 11:27:39 +02007332 if (IS_HTX_STRM(s))
7333 return htx_req_replace_stline(action, replace, len, px, s);
7334
Willy Tarreau79e57332018-10-02 16:01:16 +02007335 switch (action) {
7336 case 0: // method
7337 cur_ptr = ci_head(&s->req);
7338 cur_end = cur_ptr + txn->req.sl.rq.m_l;
Willy Tarreau14174bc2012-04-16 14:34:04 +02007339
Willy Tarreau79e57332018-10-02 16:01:16 +02007340 /* adjust req line offsets and lengths */
7341 delta = len - offset - (cur_end - cur_ptr);
7342 txn->req.sl.rq.m_l += delta;
7343 txn->req.sl.rq.u += delta;
7344 txn->req.sl.rq.v += delta;
7345 break;
Willy Tarreauaae75e32013-03-29 12:31:49 +01007346
Willy Tarreau79e57332018-10-02 16:01:16 +02007347 case 1: // path
7348 cur_ptr = http_txn_get_path(txn);
7349 if (!cur_ptr)
7350 cur_ptr = ci_head(&s->req) + txn->req.sl.rq.u;
Willy Tarreau14174bc2012-04-16 14:34:04 +02007351
Willy Tarreau79e57332018-10-02 16:01:16 +02007352 cur_end = cur_ptr;
7353 while (cur_end < ci_head(&s->req) + txn->req.sl.rq.u + txn->req.sl.rq.u_l && *cur_end != '?')
7354 cur_end++;
Willy Tarreau14174bc2012-04-16 14:34:04 +02007355
Willy Tarreau79e57332018-10-02 16:01:16 +02007356 /* adjust req line offsets and lengths */
7357 delta = len - offset - (cur_end - cur_ptr);
7358 txn->req.sl.rq.u_l += delta;
7359 txn->req.sl.rq.v += delta;
7360 break;
Willy Tarreau14174bc2012-04-16 14:34:04 +02007361
Willy Tarreau79e57332018-10-02 16:01:16 +02007362 case 2: // query
7363 offset = 1;
7364 cur_ptr = ci_head(&s->req) + txn->req.sl.rq.u;
7365 cur_end = cur_ptr + txn->req.sl.rq.u_l;
7366 while (cur_ptr < cur_end && *cur_ptr != '?')
7367 cur_ptr++;
Willy Tarreauaae75e32013-03-29 12:31:49 +01007368
Willy Tarreau79e57332018-10-02 16:01:16 +02007369 /* skip the question mark or indicate that we must insert it
7370 * (but only if the format string is not empty then).
7371 */
7372 if (cur_ptr < cur_end)
7373 cur_ptr++;
7374 else if (len > 1)
7375 offset = 0;
Willy Tarreauaae75e32013-03-29 12:31:49 +01007376
Willy Tarreau79e57332018-10-02 16:01:16 +02007377 /* adjust req line offsets and lengths */
7378 delta = len - offset - (cur_end - cur_ptr);
7379 txn->req.sl.rq.u_l += delta;
7380 txn->req.sl.rq.v += delta;
7381 break;
Willy Tarreau14174bc2012-04-16 14:34:04 +02007382
Willy Tarreau79e57332018-10-02 16:01:16 +02007383 case 3: // uri
7384 cur_ptr = ci_head(&s->req) + txn->req.sl.rq.u;
7385 cur_end = cur_ptr + txn->req.sl.rq.u_l;
Willy Tarreau14174bc2012-04-16 14:34:04 +02007386
Willy Tarreau79e57332018-10-02 16:01:16 +02007387 /* adjust req line offsets and lengths */
7388 delta = len - offset - (cur_end - cur_ptr);
7389 txn->req.sl.rq.u_l += delta;
7390 txn->req.sl.rq.v += delta;
7391 break;
Willy Tarreau14174bc2012-04-16 14:34:04 +02007392
Willy Tarreau79e57332018-10-02 16:01:16 +02007393 default:
7394 return -1;
Willy Tarreau14174bc2012-04-16 14:34:04 +02007395 }
7396
Willy Tarreau79e57332018-10-02 16:01:16 +02007397 /* commit changes and adjust end of message */
7398 delta = b_rep_blk(&s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
7399 txn->req.sl.rq.l += delta;
7400 txn->hdr_idx.v[0].len += delta;
7401 http_msg_move_end(&txn->req, delta);
7402 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +02007403}
7404
Willy Tarreau79e57332018-10-02 16:01:16 +02007405/* This function replace the HTTP status code and the associated message. The
7406 * variable <status> contains the new status code. This function never fails.
Willy Tarreau8e5e9552011-12-16 15:38:49 +01007407 */
Willy Tarreau79e57332018-10-02 16:01:16 +02007408void http_set_status(unsigned int status, const char *reason, struct stream *s)
Willy Tarreau8797c062007-05-07 00:55:35 +02007409{
Willy Tarreau79e57332018-10-02 16:01:16 +02007410 struct http_txn *txn = s->txn;
7411 char *cur_ptr, *cur_end;
7412 int delta;
7413 char *res;
7414 int c_l;
7415 const char *msg = reason;
7416 int msg_len;
Willy Tarreau8797c062007-05-07 00:55:35 +02007417
Christopher Faulet8d8ac192018-10-24 11:27:39 +02007418 if (IS_HTX_STRM(s))
7419 return htx_res_set_status(status, reason, s);
7420
Willy Tarreau79e57332018-10-02 16:01:16 +02007421 chunk_reset(&trash);
Willy Tarreau8797c062007-05-07 00:55:35 +02007422
Willy Tarreau79e57332018-10-02 16:01:16 +02007423 res = ultoa_o(status, trash.area, trash.size);
7424 c_l = res - trash.area;
Willy Tarreau8797c062007-05-07 00:55:35 +02007425
Willy Tarreau79e57332018-10-02 16:01:16 +02007426 trash.area[c_l] = ' ';
7427 trash.data = c_l + 1;
Willy Tarreau8797c062007-05-07 00:55:35 +02007428
Willy Tarreau79e57332018-10-02 16:01:16 +02007429 /* Do we have a custom reason format string? */
7430 if (msg == NULL)
7431 msg = http_get_reason(status);
7432 msg_len = strlen(msg);
7433 strncpy(&trash.area[trash.data], msg, trash.size - trash.data);
7434 trash.data += msg_len;
Willy Tarreau8797c062007-05-07 00:55:35 +02007435
Willy Tarreau79e57332018-10-02 16:01:16 +02007436 cur_ptr = ci_head(&s->res) + txn->rsp.sl.st.c;
7437 cur_end = ci_head(&s->res) + txn->rsp.sl.st.r + txn->rsp.sl.st.r_l;
Willy Tarreauc11416f2007-06-17 16:58:38 +02007438
Willy Tarreau79e57332018-10-02 16:01:16 +02007439 /* commit changes and adjust message */
7440 delta = b_rep_blk(&s->res.buf, cur_ptr, cur_end, trash.area,
7441 trash.data);
Willy Tarreauf26b2522012-12-14 08:33:14 +01007442
Willy Tarreau79e57332018-10-02 16:01:16 +02007443 /* adjust res line offsets and lengths */
7444 txn->rsp.sl.st.r += c_l - txn->rsp.sl.st.c_l;
7445 txn->rsp.sl.st.c_l = c_l;
7446 txn->rsp.sl.st.r_l = msg_len;
Willy Tarreau8797c062007-05-07 00:55:35 +02007447
Willy Tarreau79e57332018-10-02 16:01:16 +02007448 delta = trash.data - (cur_end - cur_ptr);
7449 txn->rsp.sl.st.l += delta;
7450 txn->hdr_idx.v[0].len += delta;
7451 http_msg_move_end(&txn->rsp, delta);
Willy Tarreau8797c062007-05-07 00:55:35 +02007452}
7453
Willy Tarreau58f10d72006-12-04 02:26:12 +01007454/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02007455 * Local variables:
7456 * c-indent-level: 8
7457 * c-basic-offset: 8
7458 * End:
7459 */