blob: ab8e92ccfc7d12dc1e51e8270b357aa96df79b6b [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * Client-side variables and functions.
3 *
Willy Tarreau2c9f5b12009-08-16 19:12:36 +02004 * Copyright 2000-2009 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 <errno.h>
14#include <fcntl.h>
15#include <stdio.h>
16#include <stdlib.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020017#include <string.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020018
19#include <sys/socket.h>
20#include <sys/stat.h>
21#include <sys/types.h>
22
Willy Tarreau2dd0d472006-06-29 17:53:05 +020023#include <common/compat.h>
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020024#include <common/config.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020025#include <common/time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020026
Willy Tarreaubaaee002006-06-26 02:48:02 +020027#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020028
Willy Tarreau8797c062007-05-07 00:55:35 +020029#include <proto/acl.h>
Willy Tarreau54469402006-07-29 16:59:06 +020030#include <proto/buffers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020031#include <proto/client.h>
32#include <proto/fd.h>
33#include <proto/log.h>
Willy Tarreaue5f20dc2006-12-03 15:21:35 +010034#include <proto/hdr_idx.h>
Emeric Brun5d16eda2010-01-04 15:47:45 +010035#include <proto/pattern.h>
Willy Tarreau9650f372009-08-16 14:02:45 +020036#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020037#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010038#include <proto/proxy.h>
Willy Tarreauc6ca1a02007-05-13 19:43:47 +020039#include <proto/session.h>
Willy Tarreaudded32d2008-11-30 19:48:07 +010040#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020041#include <proto/stream_sock.h>
42#include <proto/task.h>
43
44
Willy Tarreau14c8aac2007-05-08 19:46:30 +020045/* Retrieves the original destination address used by the client, and sets the
46 * SN_FRT_ADDR_SET flag.
47 */
48void get_frt_addr(struct session *s)
49{
50 socklen_t namelen = sizeof(s->frt_addr);
51
Willy Tarreau7e5067d2008-12-07 16:27:56 +010052 if (get_original_dst(s->si[0].fd, (struct sockaddr_in *)&s->frt_addr, &namelen) == -1)
53 getsockname(s->si[0].fd, (struct sockaddr *)&s->frt_addr, &namelen);
Willy Tarreau14c8aac2007-05-08 19:46:30 +020054 s->flags |= SN_FRT_ADDR_SET;
55}
Willy Tarreaubaaee002006-06-26 02:48:02 +020056
57/*
58 * FIXME: This should move to the STREAM_SOCK code then split into TCP and HTTP.
59 */
Willy Tarreauf54f8bd2008-11-23 19:53:55 +010060
Willy Tarreaubaaee002006-06-26 02:48:02 +020061/*
62 * this function is called on a read event from a listen socket, corresponding
63 * to an accept. It tries to accept as many connections as possible.
64 * It returns 0.
65 */
66int event_accept(int fd) {
Willy Tarreaueabf3132008-08-29 23:36:51 +020067 struct listener *l = fdtab[fd].owner;
Willy Tarreaue6b98942007-10-29 01:09:36 +010068 struct proxy *p = (struct proxy *)l->private; /* attached frontend */
Willy Tarreaubaaee002006-06-26 02:48:02 +020069 struct session *s;
Willy Tarreauc2168d32007-03-03 20:51:44 +010070 struct http_txn *txn;
Willy Tarreaubaaee002006-06-26 02:48:02 +020071 struct task *t;
72 int cfd;
Willy Tarreaua0250ba2008-01-06 11:22:57 +010073 int max_accept = global.tune.maxaccept;
Willy Tarreaubaaee002006-06-26 02:48:02 +020074
Willy Tarreau13a34bd2009-05-10 18:52:49 +020075 if (p->fe_sps_lim) {
76 int max = freq_ctr_remain(&p->fe_sess_per_sec, p->fe_sps_lim, 0);
Willy Tarreau79584222009-03-06 09:18:27 +010077 if (max_accept > max)
78 max_accept = max;
79 }
80
Willy Tarreaub00f9c42009-03-21 22:43:12 +010081 while (p->feconn < p->maxconn && actconn < global.maxconn && max_accept--) {
Willy Tarreaubaaee002006-06-26 02:48:02 +020082 struct sockaddr_storage addr;
83 socklen_t laddr = sizeof(addr);
84
85 if ((cfd = accept(fd, (struct sockaddr *)&addr, &laddr)) == -1) {
86 switch (errno) {
87 case EAGAIN:
88 case EINTR:
89 case ECONNABORTED:
90 return 0; /* nothing more to accept */
91 case ENFILE:
92 send_log(p, LOG_EMERG,
93 "Proxy %s reached system FD limit at %d. Please check system tunables.\n",
94 p->id, maxfd);
95 return 0;
96 case EMFILE:
97 send_log(p, LOG_EMERG,
98 "Proxy %s reached process FD limit at %d. Please check 'ulimit-n' and restart.\n",
99 p->id, maxfd);
100 return 0;
101 case ENOBUFS:
102 case ENOMEM:
103 send_log(p, LOG_EMERG,
104 "Proxy %s reached system memory limit at %d sockets. Please check system tunables.\n",
105 p->id, maxfd);
106 return 0;
107 default:
108 return 0;
109 }
110 }
111
Willy Tarreau6e6fb2b2009-08-16 18:20:44 +0200112 if (l->nbconn >= l->maxconn) {
113 /* too many connections, we shoot this one and return.
114 * FIXME: it would be better to simply switch the listener's
115 * state to LI_FULL and disable the FD. We could re-enable
116 * it upon fd_delete(), but this requires all protocols to
117 * be switched.
118 */
119 goto out_close;
120 }
121
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200122 if ((s = pool_alloc2(pool2_session)) == NULL) { /* disable this proxy for a while */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200123 Alert("out of memory in event_accept().\n");
Willy Tarreauf161a342007-04-08 16:59:42 +0200124 EV_FD_CLR(fd, DIR_RD);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200125 p->state = PR_STIDLE;
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100126 goto out_close;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200127 }
128
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100129 LIST_ADDQ(&sessions, &s->list);
Willy Tarreau62e4f1d2008-12-07 20:16:23 +0100130 LIST_INIT(&s->back_refs);
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100131
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200132 s->flags = 0;
Willy Tarreauf8533202008-08-16 14:55:08 +0200133 s->term_trace = 0;
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200134
Willy Tarreaubaaee002006-06-26 02:48:02 +0200135 /* if this session comes from a known monitoring system, we want to ignore
136 * it as soon as possible, which means closing it immediately for TCP.
137 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200138 if (addr.ss_family == AF_INET &&
139 p->mon_mask.s_addr &&
140 (((struct sockaddr_in *)&addr)->sin_addr.s_addr & p->mon_mask.s_addr) == p->mon_net.s_addr) {
141 if (p->mode == PR_MODE_TCP) {
142 close(cfd);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200143 pool_free2(pool2_session, s);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200144 continue;
145 }
146 s->flags |= SN_MONITOR;
147 }
148
Willy Tarreaua4613182009-03-21 18:13:21 +0100149 if ((t = task_new()) == NULL) { /* disable this proxy for a while */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200150 Alert("out of memory in event_accept().\n");
Willy Tarreauf161a342007-04-08 16:59:42 +0200151 EV_FD_CLR(fd, DIR_RD);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200152 p->state = PR_STIDLE;
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100153 goto out_free_session;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200154 }
155
156 s->cli_addr = addr;
157 if (cfd >= global.maxsock) {
158 Alert("accept(): not enough free sockets. Raise -n argument. Giving up.\n");
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100159 goto out_free_task;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200160 }
161
162 if ((fcntl(cfd, F_SETFL, O_NONBLOCK) == -1) ||
163 (setsockopt(cfd, IPPROTO_TCP, TCP_NODELAY,
164 (char *) &one, sizeof(one)) == -1)) {
165 Alert("accept(): cannot set the socket in non blocking mode. Giving up\n");
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100166 goto out_free_task;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200167 }
168
169 if (p->options & PR_O_TCP_CLI_KA)
170 setsockopt(cfd, SOL_SOCKET, SO_KEEPALIVE, (char *) &one, sizeof(one));
171
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200172 if (p->options & PR_O_TCP_NOLING)
173 setsockopt(cfd, SOL_SOCKET, SO_LINGER, (struct linger *) &nolinger, sizeof(struct linger));
174
Willy Tarreau3bc13772008-12-07 11:50:35 +0100175 t->process = l->handler;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200176 t->context = s;
Willy Tarreau2c9f5b12009-08-16 19:12:36 +0200177 t->nice = l->nice;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200178
179 s->task = t;
Willy Tarreaub5654f62008-12-07 16:45:10 +0100180 s->listener = l;
Willy Tarreau73de9892006-11-30 11:40:23 +0100181
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200182 /* Note: initially, the session's backend points to the frontend.
183 * This changes later when switching rules are executed or
184 * when the default backend is assigned.
Willy Tarreaua7e76142007-11-03 14:28:39 +0100185 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200186 s->be = s->fe = p;
Willy Tarreaua7e76142007-11-03 14:28:39 +0100187
Willy Tarreaubaaee002006-06-26 02:48:02 +0200188 s->req = s->rep = NULL; /* will be allocated later */
189
Willy Tarreau35374672008-09-03 18:11:02 +0200190 s->si[0].state = s->si[0].prev_state = SI_ST_EST;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200191 s->si[0].err_type = SI_ET_NONE;
192 s->si[0].err_loc = NULL;
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200193 s->si[0].owner = t;
Willy Tarreaudc85b392009-08-18 07:38:19 +0200194 s->si[0].update = stream_sock_data_finish;
Willy Tarreau3c6ab2e2008-09-04 11:19:41 +0200195 s->si[0].shutr = stream_sock_shutr;
Willy Tarreau48adac52008-08-30 04:58:38 +0200196 s->si[0].shutw = stream_sock_shutw;
Willy Tarreau3ffeba12008-12-14 14:42:35 +0100197 s->si[0].chk_rcv = stream_sock_chk_rcv;
198 s->si[0].chk_snd = stream_sock_chk_snd;
Willy Tarreaudc85b392009-08-18 07:38:19 +0200199 s->si[0].connect = NULL;
Willy Tarreaub029f8c2009-09-05 20:57:35 +0200200 s->si[0].iohandler = NULL;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200201 s->si[0].fd = cfd;
Willy Tarreaudc340a92009-06-28 23:10:19 +0200202 s->si[0].flags = SI_FL_NONE | SI_FL_CAP_SPLTCP; /* TCP splicing capable */
Willy Tarreauf27b5ea2009-10-03 22:01:18 +0200203 if (s->fe->options2 & PR_O2_INDEPSTR)
204 s->si[0].flags |= SI_FL_INDEP_STR;
Willy Tarreau35374672008-09-03 18:11:02 +0200205 s->si[0].exp = TICK_ETERNITY;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200206
Willy Tarreau35374672008-09-03 18:11:02 +0200207 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200208 s->si[1].err_type = SI_ET_NONE;
209 s->si[1].err_loc = NULL;
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200210 s->si[1].owner = t;
Willy Tarreaudc85b392009-08-18 07:38:19 +0200211 s->si[1].update = stream_sock_data_finish;
Willy Tarreau3c6ab2e2008-09-04 11:19:41 +0200212 s->si[1].shutr = stream_sock_shutr;
Willy Tarreau48adac52008-08-30 04:58:38 +0200213 s->si[1].shutw = stream_sock_shutw;
Willy Tarreau3ffeba12008-12-14 14:42:35 +0100214 s->si[1].chk_rcv = stream_sock_chk_rcv;
215 s->si[1].chk_snd = stream_sock_chk_snd;
Willy Tarreaudc85b392009-08-18 07:38:19 +0200216 s->si[1].connect = tcpv4_connect_server;
Willy Tarreaub029f8c2009-09-05 20:57:35 +0200217 s->si[1].iohandler = NULL;
Willy Tarreau35374672008-09-03 18:11:02 +0200218 s->si[1].exp = TICK_ETERNITY;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200219 s->si[1].fd = -1; /* just to help with debugging */
Willy Tarreaud7704b52008-09-04 11:51:16 +0200220 s->si[1].flags = SI_FL_NONE;
Willy Tarreauf27b5ea2009-10-03 22:01:18 +0200221 if (s->be->options2 & PR_O2_INDEPSTR)
222 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200223
Willy Tarreau7c669d72008-06-20 15:04:11 +0200224 s->srv = s->prev_srv = s->srv_conn = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200225 s->pend_pos = NULL;
Willy Tarreaua7e76142007-11-03 14:28:39 +0100226 s->conn_retries = s->be->conn_retries;
Willy Tarreauddb358d2006-12-17 22:55:52 +0100227
228 /* FIXME: the logs are horribly complicated now, because they are
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200229 * defined in <p>, <p>, and later <be> and <be>.
Willy Tarreauddb358d2006-12-17 22:55:52 +0100230 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200231
232 if (s->flags & SN_MONITOR)
233 s->logs.logwait = 0;
234 else
235 s->logs.logwait = p->to_log;
236
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100237 if (s->logs.logwait & LW_REQ)
238 s->do_log = http_sess_log;
239 else
240 s->do_log = tcp_sess_log;
241
Willy Tarreau52a0c602009-08-16 22:45:38 +0200242 /* default error reporting function, may be changed by analysers */
243 s->srv_error = default_srv_error;
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100244
Willy Tarreaub7f694f2008-06-22 17:18:02 +0200245 s->logs.accept_date = date; /* user-visible date for logging */
246 s->logs.tv_accept = now; /* corrected date for internal use */
Willy Tarreau70089872008-06-13 21:12:51 +0200247 tv_zero(&s->logs.tv_request);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200248 s->logs.t_queue = -1;
249 s->logs.t_connect = -1;
250 s->logs.t_data = -1;
251 s->logs.t_close = 0;
Willy Tarreau35d66b02007-01-02 00:28:21 +0100252 s->logs.bytes_in = s->logs.bytes_out = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200253 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
254 s->logs.srv_queue_size = 0; /* we will get this number soon */
255
256 s->data_source = DATA_SRC_NONE;
257
258 s->uniq_id = totalconn;
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200259 proxy_inc_fe_ctr(l, p); /* note: cum_beconn will be increased once assigned */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200260
Willy Tarreauc2168d32007-03-03 20:51:44 +0100261 txn = &s->txn;
Willy Tarreau042cc792007-03-19 16:20:06 +0100262 /* Those variables will be checked and freed if non-NULL in
263 * session.c:session_free(). It is important that they are
264 * properly initialized.
265 */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100266 txn->sessid = NULL;
Willy Tarreau042cc792007-03-19 16:20:06 +0100267 txn->srv_cookie = NULL;
268 txn->cli_cookie = NULL;
269 txn->uri = NULL;
Willy Tarreauc2168d32007-03-03 20:51:44 +0100270 txn->req.cap = NULL;
271 txn->rsp.cap = NULL;
272 txn->hdr_idx.v = NULL;
273 txn->hdr_idx.size = txn->hdr_idx.used = 0;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100274
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200275 if (p->mode == PR_MODE_HTTP) {
276 /* the captures are only used in HTTP frontends */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100277 if (p->nb_req_cap > 0 &&
278 (txn->req.cap = pool_alloc2(p->req_cap_pool)) == NULL)
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100279 goto out_fail_reqcap; /* no memory */
280
Willy Tarreau0937bc42009-12-22 15:03:09 +0100281 if (p->nb_rsp_cap > 0 &&
282 (txn->rsp.cap = pool_alloc2(p->rsp_cap_pool)) == NULL)
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100283 goto out_fail_rspcap; /* no memory */
Willy Tarreaubf288622009-07-10 23:52:51 +0200284 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100285
Willy Tarreaubf288622009-07-10 23:52:51 +0200286 if (p->acl_requires & ACL_USE_L7_ANY) {
287 /* we have to allocate header indexes only if we know
288 * that we may make use of them. This of course includes
289 * (mode == PR_MODE_HTTP).
290 */
Willy Tarreau1d4154a2007-05-13 22:57:02 +0200291 txn->hdr_idx.size = MAX_HTTP_HDR;
292
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100293 if ((txn->hdr_idx.v = pool_alloc2(p->hdr_idx_pool)) == NULL)
294 goto out_fail_idx; /* no memory */
Willy Tarreaue5f20dc2006-12-03 15:21:35 +0100295 }
296
Willy Tarreau0937bc42009-12-22 15:03:09 +0100297 if (p->mode == PR_MODE_HTTP)
298 http_init_txn(s);
299
Willy Tarreaubaaee002006-06-26 02:48:02 +0200300 if ((p->mode == PR_MODE_TCP || p->mode == PR_MODE_HTTP)
301 && (p->logfac1 >= 0 || p->logfac2 >= 0)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200302 if (p->to_log) {
303 /* we have the client ip */
304 if (s->logs.logwait & LW_CLIP)
305 if (!(s->logs.logwait &= ~LW_CLIP))
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100306 s->do_log(s);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200307 }
308 else if (s->cli_addr.ss_family == AF_INET) {
309 char pn[INET_ADDRSTRLEN], sn[INET_ADDRSTRLEN];
Willy Tarreau14c8aac2007-05-08 19:46:30 +0200310
311 if (!(s->flags & SN_FRT_ADDR_SET))
312 get_frt_addr(s);
313
314 if (inet_ntop(AF_INET, (const void *)&((struct sockaddr_in *)&s->frt_addr)->sin_addr,
Willy Tarreaubaaee002006-06-26 02:48:02 +0200315 sn, sizeof(sn)) &&
316 inet_ntop(AF_INET, (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
317 pn, sizeof(pn))) {
318 send_log(p, LOG_INFO, "Connect from %s:%d to %s:%d (%s/%s)\n",
319 pn, ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port),
Willy Tarreau14c8aac2007-05-08 19:46:30 +0200320 sn, ntohs(((struct sockaddr_in *)&s->frt_addr)->sin_port),
Willy Tarreaubaaee002006-06-26 02:48:02 +0200321 p->id, (p->mode == PR_MODE_HTTP) ? "HTTP" : "TCP");
322 }
323 }
324 else {
325 char pn[INET6_ADDRSTRLEN], sn[INET6_ADDRSTRLEN];
Willy Tarreau14c8aac2007-05-08 19:46:30 +0200326
327 if (!(s->flags & SN_FRT_ADDR_SET))
328 get_frt_addr(s);
329
330 if (inet_ntop(AF_INET6, (const void *)&((struct sockaddr_in6 *)&s->frt_addr)->sin6_addr,
Willy Tarreaubaaee002006-06-26 02:48:02 +0200331 sn, sizeof(sn)) &&
332 inet_ntop(AF_INET6, (const void *)&((struct sockaddr_in6 *)&s->cli_addr)->sin6_addr,
333 pn, sizeof(pn))) {
334 send_log(p, LOG_INFO, "Connect from %s:%d to %s:%d (%s/%s)\n",
335 pn, ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
Willy Tarreau14c8aac2007-05-08 19:46:30 +0200336 sn, ntohs(((struct sockaddr_in6 *)&s->frt_addr)->sin6_port),
Willy Tarreaubaaee002006-06-26 02:48:02 +0200337 p->id, (p->mode == PR_MODE_HTTP) ? "HTTP" : "TCP");
338 }
339 }
340 }
341
342 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200343 int len;
Willy Tarreau14c8aac2007-05-08 19:46:30 +0200344
345 if (!(s->flags & SN_FRT_ADDR_SET))
346 get_frt_addr(s);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200347
348 if (s->cli_addr.ss_family == AF_INET) {
349 char pn[INET_ADDRSTRLEN];
350 inet_ntop(AF_INET,
351 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
352 pn, sizeof(pn));
353
354 len = sprintf(trash, "%08x:%s.accept(%04x)=%04x from [%s:%d]\n",
355 s->uniq_id, p->id, (unsigned short)fd, (unsigned short)cfd,
356 pn, ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port));
357 }
358 else {
359 char pn[INET6_ADDRSTRLEN];
360 inet_ntop(AF_INET6,
361 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
362 pn, sizeof(pn));
363
364 len = sprintf(trash, "%08x:%s.accept(%04x)=%04x from [%s:%d]\n",
365 s->uniq_id, p->id, (unsigned short)fd, (unsigned short)cfd,
366 pn, ntohs(((struct sockaddr_in6 *)(&s->cli_addr))->sin6_port));
367 }
368
369 write(1, trash, len);
370 }
371
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100372 if ((s->req = pool_alloc2(pool2_buffer)) == NULL)
373 goto out_fail_req; /* no memory */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200374
Willy Tarreau27a674e2009-08-17 07:23:33 +0200375 s->req->size = global.tune.bufsize;
Willy Tarreau54469402006-07-29 16:59:06 +0200376 buffer_init(s->req);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200377 s->req->prod = &s->si[0];
378 s->req->cons = &s->si[1];
Willy Tarreau48adac52008-08-30 04:58:38 +0200379 s->si[0].ib = s->si[1].ob = s->req;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200380
Willy Tarreau9a2d1542008-08-30 12:31:07 +0200381 s->req->flags |= BF_READ_ATTACHED; /* the producer is already connected */
382
Willy Tarreau7c3c5412009-12-13 15:53:05 +0100383 if (p->mode == PR_MODE_HTTP)
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100384 s->req->flags |= BF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200385
Willy Tarreau3bc13772008-12-07 11:50:35 +0100386 /* activate default analysers enabled for this listener */
387 s->req->analysers = l->analysers;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200388
Willy Tarreauc1a21672009-08-16 22:37:44 +0200389 /* note: this should not happen anymore since there's always at least the switching rules */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200390 if (!s->req->analysers) {
391 buffer_auto_connect(s->req); /* don't wait to establish connection */
392 buffer_auto_close(s->req); /* let the producer forward close requests */
393 }
Willy Tarreaudc0a6a02008-08-03 20:38:13 +0200394
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100395 s->req->rto = s->fe->timeout.client;
396 s->req->wto = s->be->timeout.server;
397 s->req->cto = s->be->timeout.connect;
Willy Tarreaud7971282006-07-29 18:36:34 +0200398
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100399 if ((s->rep = pool_alloc2(pool2_buffer)) == NULL)
400 goto out_fail_rep; /* no memory */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200401
Willy Tarreau27a674e2009-08-17 07:23:33 +0200402 s->rep->size = global.tune.bufsize;
Willy Tarreau54469402006-07-29 16:59:06 +0200403 buffer_init(s->rep);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200404 s->rep->prod = &s->si[1];
405 s->rep->cons = &s->si[0];
Willy Tarreau48adac52008-08-30 04:58:38 +0200406 s->si[0].ob = s->si[1].ib = s->rep;
Willy Tarreau54469402006-07-29 16:59:06 +0200407
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100408 s->rep->rto = s->be->timeout.server;
409 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200410 s->rep->cto = TICK_ETERNITY;
Willy Tarreaud7971282006-07-29 18:36:34 +0200411
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200412 s->req->rex = TICK_ETERNITY;
413 s->req->wex = TICK_ETERNITY;
Willy Tarreauffab5b42008-08-17 18:03:28 +0200414 s->req->analyse_exp = TICK_ETERNITY;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200415 s->rep->rex = TICK_ETERNITY;
416 s->rep->wex = TICK_ETERNITY;
Willy Tarreauffab5b42008-08-17 18:03:28 +0200417 s->rep->analyse_exp = TICK_ETERNITY;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200418 t->expire = TICK_ETERNITY;
419
Willy Tarreau7a966482007-04-15 10:58:02 +0200420 fd_insert(cfd);
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200421 fdtab[cfd].owner = &s->si[0];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200422 fdtab[cfd].state = FD_STREADY;
Willy Tarreaufb14edc2009-06-14 15:24:37 +0200423 fdtab[cfd].flags = FD_FL_TCP | FD_FL_TCP_NODELAY;
Willy Tarreau5d707e12009-06-28 11:09:07 +0200424 if (p->options & PR_O_TCP_NOLING)
425 fdtab[cfd].flags |= FD_FL_TCP_NOLING;
426
Willy Tarreaue6b98942007-10-29 01:09:36 +0100427 fdtab[cfd].cb[DIR_RD].f = l->proto->read;
Willy Tarreau54469402006-07-29 16:59:06 +0200428 fdtab[cfd].cb[DIR_RD].b = s->req;
Willy Tarreaue6b98942007-10-29 01:09:36 +0100429 fdtab[cfd].cb[DIR_WR].f = l->proto->write;
Willy Tarreau54469402006-07-29 16:59:06 +0200430 fdtab[cfd].cb[DIR_WR].b = s->rep;
Willy Tarreau8d5d77e2009-10-18 07:25:52 +0200431 fdinfo[cfd].peeraddr = (struct sockaddr *)&s->cli_addr;
432 fdinfo[cfd].peerlen = sizeof(s->cli_addr);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200433
434 if ((p->mode == PR_MODE_HTTP && (s->flags & SN_MONITOR)) ||
Willy Tarreau0f772532006-12-23 20:51:41 +0100435 (p->mode == PR_MODE_HEALTH && (p->options & PR_O_HTTP_CHK))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200436 /* Either we got a request from a monitoring system on an HTTP instance,
437 * or we're in health check mode with the 'httpchk' option enabled. In
438 * both cases, we return a fake "HTTP/1.0 200 OK" response and we exit.
439 */
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200440 struct chunk msg;
441 chunk_initstr(&msg, "HTTP/1.0 200 OK\r\n\r\n");
Willy Tarreaudded32d2008-11-30 19:48:07 +0100442 stream_int_retnclose(&s->si[0], &msg); /* forge a 200 response */
Willy Tarreau2ade3012009-03-06 19:16:39 +0100443 s->req->analysers = 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200444 t->expire = s->rep->wex;
Willy Tarreau0f772532006-12-23 20:51:41 +0100445 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200446 else if (p->mode == PR_MODE_HEALTH) { /* health check mode, no client reading */
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200447 struct chunk msg;
448 chunk_initstr(&msg, "OK\n");
Willy Tarreaudded32d2008-11-30 19:48:07 +0100449 stream_int_retnclose(&s->si[0], &msg); /* forge an "OK" response */
Willy Tarreau2ade3012009-03-06 19:16:39 +0100450 s->req->analysers = 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200451 t->expire = s->rep->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200452 }
453 else {
Willy Tarreauf161a342007-04-08 16:59:42 +0200454 EV_FD_SET(cfd, DIR_RD);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200455 }
456
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200457 /* it is important not to call the wakeup function directly but to
458 * pass through task_wakeup(), because this one knows how to apply
459 * priorities to tasks.
460 */
Willy Tarreau721fdbc2009-03-08 12:25:07 +0100461 task_wakeup(t, TASK_WOKEN_INIT);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200462
Willy Tarreau6e6fb2b2009-08-16 18:20:44 +0200463 l->nbconn++; /* warning! right now, it's up to the handler to decrease this */
464 if (l->nbconn >= l->maxconn) {
465 EV_FD_CLR(l->fd, DIR_RD);
466 l->state = LI_FULL;
467 }
468
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100469 p->feconn++; /* beconn will be increased later */
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200470 if (p->feconn > p->counters.feconn_max)
471 p->counters.feconn_max = p->feconn;
Willy Tarreaua7e76142007-11-03 14:28:39 +0100472
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200473 if (l->counters) {
474 if (l->nbconn > l->counters->conn_max)
475 l->counters->conn_max = l->nbconn;
476 }
477
Willy Tarreaubaaee002006-06-26 02:48:02 +0200478 actconn++;
479 totalconn++;
480
481 // fprintf(stderr, "accepting from %p => %d conn, %d total, task=%p\n", p, actconn, totalconn, t);
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100482 } /* end of while (p->feconn < p->maxconn) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200483 return 0;
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100484
485 /* Error unrolling */
486 out_fail_rep:
Willy Tarreau48d63db2008-08-03 17:41:33 +0200487 pool_free2(pool2_buffer, s->req);
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100488 out_fail_req:
Willy Tarreau48d63db2008-08-03 17:41:33 +0200489 pool_free2(p->hdr_idx_pool, txn->hdr_idx.v);
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100490 out_fail_idx:
Willy Tarreau48d63db2008-08-03 17:41:33 +0200491 pool_free2(p->rsp_cap_pool, txn->rsp.cap);
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100492 out_fail_rspcap:
Willy Tarreau48d63db2008-08-03 17:41:33 +0200493 pool_free2(p->req_cap_pool, txn->req.cap);
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100494 out_fail_reqcap:
495 out_free_task:
Willy Tarreaua4613182009-03-21 18:13:21 +0100496 task_free(t);
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100497 out_free_session:
Willy Tarreauf54f8bd2008-11-23 19:53:55 +0100498 LIST_DEL(&s->list);
Willy Tarreau8ced9a42007-11-04 17:51:50 +0100499 pool_free2(pool2_session, s);
500 out_close:
501 close(cfd);
502 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200503}
504
505
506
Willy Tarreau8797c062007-05-07 00:55:35 +0200507/************************************************************************/
508/* All supported keywords must be declared here. */
509/************************************************************************/
510
511/* set test->ptr to point to the source IPv4/IPv6 address and test->i to the family */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200512static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200513acl_fetch_src(struct proxy *px, struct session *l4, void *l7, int dir,
514 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200515{
516 test->i = l4->cli_addr.ss_family;
517 if (test->i == AF_INET)
518 test->ptr = (void *)&((struct sockaddr_in *)&l4->cli_addr)->sin_addr;
519 else
520 test->ptr = (void *)&((struct sockaddr_in6 *)(&l4->cli_addr))->sin6_addr;
521 test->flags = ACL_TEST_F_READ_ONLY;
522 return 1;
523}
524
Emeric Brun5d16eda2010-01-04 15:47:45 +0100525/* extract the connection's source address */
526static int
527pattern_fetch_src(struct proxy *px, struct session *l4, void *l7, int dir,
528 const char *arg, int arg_len, union pattern_data *data)
529{
530 data->ip.s_addr = ((struct sockaddr_in *)&l4->cli_addr)->sin_addr.s_addr;
531 return 1;
532}
533
Willy Tarreau8797c062007-05-07 00:55:35 +0200534
Emeric Brun5d16eda2010-01-04 15:47:45 +0100535/* set test->i to the connection's source port */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200536static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200537acl_fetch_sport(struct proxy *px, struct session *l4, void *l7, int dir,
538 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200539{
540 if (l4->cli_addr.ss_family == AF_INET)
541 test->i = ntohs(((struct sockaddr_in *)&l4->cli_addr)->sin_port);
542 else
543 test->i = ntohs(((struct sockaddr_in6 *)(&l4->cli_addr))->sin6_port);
544 test->flags = 0;
545 return 1;
546}
547
Willy Tarreau662b2d82007-05-08 19:56:15 +0200548
549/* set test->ptr to point to the frontend's IPv4/IPv6 address and test->i to the family */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200550static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200551acl_fetch_dst(struct proxy *px, struct session *l4, void *l7, int dir,
552 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau662b2d82007-05-08 19:56:15 +0200553{
554 if (!(l4->flags & SN_FRT_ADDR_SET))
555 get_frt_addr(l4);
556
557 test->i = l4->frt_addr.ss_family;
558 if (test->i == AF_INET)
559 test->ptr = (void *)&((struct sockaddr_in *)&l4->frt_addr)->sin_addr;
560 else
561 test->ptr = (void *)&((struct sockaddr_in6 *)(&l4->frt_addr))->sin6_addr;
562 test->flags = ACL_TEST_F_READ_ONLY;
563 return 1;
564}
565
566
Emeric Brun5d16eda2010-01-04 15:47:45 +0100567/* extract the connection's destination address */
568static int
569pattern_fetch_dst(struct proxy *px, struct session *l4, void *l7, int dir,
570 const char *arg, int arg_len, union pattern_data *data)
571{
572 data->ip.s_addr = ((struct sockaddr_in *)&l4->frt_addr)->sin_addr.s_addr;
573 return 1;
574}
575
Willy Tarreau662b2d82007-05-08 19:56:15 +0200576/* set test->i to the frontend connexion's destination port */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200577static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200578acl_fetch_dport(struct proxy *px, struct session *l4, void *l7, int dir,
579 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau662b2d82007-05-08 19:56:15 +0200580{
581 if (!(l4->flags & SN_FRT_ADDR_SET))
582 get_frt_addr(l4);
583
584 if (l4->frt_addr.ss_family == AF_INET)
585 test->i = ntohs(((struct sockaddr_in *)&l4->frt_addr)->sin_port);
586 else
587 test->i = ntohs(((struct sockaddr_in6 *)(&l4->frt_addr))->sin6_port);
588 test->flags = 0;
589 return 1;
590}
591
Emeric Brun5d16eda2010-01-04 15:47:45 +0100592static int
593pattern_fetch_dport(struct proxy *px, struct session *l4, void *l7, int dir,
594 const char *arg, int arg_len, union pattern_data *data)
595
596{
597 data->integer = ntohs(((struct sockaddr_in *)&l4->frt_addr)->sin_port);
598 return 1;
599}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100600
Willy Tarreaua36af912009-10-10 12:02:45 +0200601/* set test->i to the number of connexions to the same listening socket */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200602static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200603acl_fetch_dconn(struct proxy *px, struct session *l4, void *l7, int dir,
604 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200605{
Willy Tarreaua36af912009-10-10 12:02:45 +0200606 test->i = l4->listener->nbconn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200607 return 1;
608}
609
610
611/* Note: must not be declared <const> as its list will be overwritten */
612static struct acl_kw_list acl_kws = {{ },{
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200613 { "src_port", acl_parse_int, acl_fetch_sport, acl_match_int, ACL_USE_TCP_PERMANENT },
614 { "src", acl_parse_ip, acl_fetch_src, acl_match_ip, ACL_USE_TCP4_PERMANENT },
615 { "dst", acl_parse_ip, acl_fetch_dst, acl_match_ip, ACL_USE_TCP4_PERMANENT },
616 { "dst_port", acl_parse_int, acl_fetch_dport, acl_match_int, ACL_USE_TCP_PERMANENT },
Willy Tarreau662b2d82007-05-08 19:56:15 +0200617#if 0
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100618 { "src_limit", acl_parse_int, acl_fetch_sconn, acl_match_int },
Willy Tarreau8797c062007-05-07 00:55:35 +0200619#endif
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200620 { "dst_conn", acl_parse_int, acl_fetch_dconn, acl_match_int, ACL_USE_NOTHING },
Willy Tarreau8797c062007-05-07 00:55:35 +0200621 { NULL, NULL, NULL, NULL },
622}};
623
624
Emeric Brun5d16eda2010-01-04 15:47:45 +0100625/* Note: must not be declared <const> as its list will be overwritten */
626static struct pattern_fetch_kw_list pattern_fetch_keywords = {{ },{
627 { "src", pattern_fetch_src, PATTERN_TYPE_IP, PATTERN_FETCH_REQ },
628 { "dst", pattern_fetch_dst, PATTERN_TYPE_IP, PATTERN_FETCH_REQ },
629 { "dst_port", pattern_fetch_dport, PATTERN_TYPE_INTEGER, PATTERN_FETCH_REQ },
630 { NULL, NULL, 0, 0 },
631}};
632
633
Willy Tarreau8797c062007-05-07 00:55:35 +0200634__attribute__((constructor))
635static void __client_init(void)
636{
637 acl_register_keywords(&acl_kws);
Emeric Brun5d16eda2010-01-04 15:47:45 +0100638 pattern_register_fetches(&pattern_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200639}
640
641
Willy Tarreaubaaee002006-06-26 02:48:02 +0200642/*
643 * Local variables:
644 * c-indent-level: 8
645 * c-basic-offset: 8
646 * End:
647 */