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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreaub4556912009-07-23 13:45:47 +02003 * Copyright 2000-2009 Willy Tarreau <w@1wt.eu>.
Willy Tarreaubaaee002006-06-26 02:48:02 +02004 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 *
10 * Please refer to RFC2068 or RFC2616 for informations about HTTP protocol, and
11 * RFC2965 for informations about cookies usage. More generally, the IETF HTTP
12 * Working Group's web site should be consulted for protocol related changes :
13 *
14 * http://ftp.ics.uci.edu/pub/ietf/http/
15 *
16 * Pending bugs (may be not fixed because never reproduced) :
17 * - solaris only : sometimes, an HTTP proxy with only a dispatch address causes
18 * the proxy to terminate (no core) if the client breaks the connection during
19 * the response. Seen on 1.1.8pre4, but never reproduced. May not be related to
20 * the snprintf() bug since requests were simple (GET / HTTP/1.0), but may be
21 * related to missing setsid() (fixed in 1.1.15)
22 * - a proxy with an invalid config will prevent the startup even if disabled.
23 *
24 * ChangeLog has moved to the CHANGELOG file.
25 *
26 * TODO:
27 * - handle properly intermediate incomplete server headers. Done ?
28 * - handle hot-reconfiguration
29 * - fix client/server state transition when server is in connect or headers state
30 * and client suddenly disconnects. The server *should* switch to SHUT_WR, but
31 * still handle HTTP headers.
32 * - remove MAX_NEWHDR
33 * - cut this huge file into several ones
34 *
35 */
36
37#include <stdio.h>
38#include <stdlib.h>
39#include <unistd.h>
40#include <string.h>
41#include <ctype.h>
42#include <sys/time.h>
43#include <sys/types.h>
44#include <sys/socket.h>
45#include <netinet/tcp.h>
46#include <netinet/in.h>
47#include <arpa/inet.h>
48#include <netdb.h>
49#include <fcntl.h>
50#include <errno.h>
51#include <signal.h>
52#include <stdarg.h>
53#include <sys/resource.h>
54#include <time.h>
55#include <syslog.h>
56
57#ifdef DEBUG_FULL
58#include <assert.h>
59#endif
60
Willy Tarreau2dd0d472006-06-29 17:53:05 +020061#include <common/appsession.h>
62#include <common/base64.h>
63#include <common/cfgparse.h>
64#include <common/compat.h>
65#include <common/config.h>
66#include <common/defaults.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010067#include <common/errors.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020068#include <common/memory.h>
69#include <common/mini-clist.h>
70#include <common/regex.h>
71#include <common/standard.h>
72#include <common/time.h>
73#include <common/uri_auth.h>
74#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020075
76#include <types/capture.h>
77#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020078
Willy Tarreau0fc45a72007-06-17 00:36:03 +020079#include <proto/acl.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020080#include <proto/backend.h>
81#include <proto/buffers.h>
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +020082#include <proto/checks.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020083#include <proto/client.h>
84#include <proto/fd.h>
85#include <proto/log.h>
Willy Tarreaudd815982007-10-16 12:25:14 +020086#include <proto/protocols.h>
Willy Tarreau80587432006-12-24 17:47:20 +010087#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020088#include <proto/proxy.h>
89#include <proto/queue.h>
90#include <proto/server.h>
Willy Tarreauc6ca1a02007-05-13 19:43:47 +020091#include <proto/session.h>
Willy Tarreau29857942009-05-10 09:01:21 +020092#include <proto/signal.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020093#include <proto/stream_sock.h>
94#include <proto/task.h>
95
Willy Tarreaub38651a2007-03-24 17:24:39 +010096#ifdef CONFIG_HAP_CTTPROXY
97#include <proto/cttproxy.h>
98#endif
99
Willy Tarreaubaaee002006-06-26 02:48:02 +0200100/*********************************************************************/
101
102/*********************************************************************/
103
Willy Tarreau5d01a632009-06-22 16:02:30 +0200104static int cfg_nbcfgfiles; /* number of config files */
105static char *cfg_cfgfile[10]; /* configuration files, stop at NULL */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200106char *progname = NULL; /* program name */
107int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100108int relative_pid = 1; /* process id starting at 1 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200109
110/* global options */
111struct global global = {
112 logfac1 : -1,
113 logfac2 : -1,
114 loglev1 : 7, /* max syslog level : debug */
115 loglev2 : 7,
Willy Tarreau03f6d672007-10-18 15:15:57 +0200116 .stats_sock = {
Willy Tarreau03f6d672007-10-18 15:15:57 +0200117 .maxconn = 10, /* 10 concurrent stats connections */
118 .perm = {
119 .ux = {
120 .uid = -1,
121 .gid = -1,
122 .mode = 0,
123 }
124 }
Willy Tarreau27a674e2009-08-17 07:23:33 +0200125 },
126 .tune = {
127 .bufsize = BUFSIZE,
128 .maxrewrite = MAXREWRITE,
129 },
Willy Tarreaubaaee002006-06-26 02:48:02 +0200130 /* others NULL OK */
131};
132
133/*********************************************************************/
134
135int stopping; /* non zero means stopping in progress */
136
137/* Here we store informations about the pids of the processes we may pause
138 * or kill. We will send them a signal every 10 ms until we can bind to all
139 * our ports. With 200 retries, that's about 2 seconds.
140 */
141#define MAX_START_RETRIES 200
142static int nb_oldpids = 0;
143static int *oldpids = NULL;
144static int oldpids_sig; /* use USR1 or TERM */
145
146/* this is used to drain data, and as a temporary buffer for sprintf()... */
147char trash[BUFSIZE];
148
149const int zero = 0;
150const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200151const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200152
Willy Tarreau3ad6a762009-08-16 10:08:02 +0200153char hostname[MAX_HOSTNAME_LEN] = "";
Willy Tarreaubaaee002006-06-26 02:48:02 +0200154
155
156/*********************************************************************/
157/* general purpose functions ***************************************/
158/*********************************************************************/
159
160void display_version()
161{
162 printf("HA-Proxy version " HAPROXY_VERSION " " HAPROXY_DATE"\n");
Willy Tarreaub4556912009-07-23 13:45:47 +0200163 printf("Copyright 2000-2009 Willy Tarreau <w@1wt.eu>\n\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200164}
165
Willy Tarreau7b066db2007-12-02 11:28:59 +0100166void display_build_opts()
167{
168 printf("Build options :"
169#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100170 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100171#endif
172#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100173 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100174#endif
175#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100176 "\n CC = " BUILD_CC
177#endif
178#ifdef BUILD_CFLAGS
179 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100180#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100181#ifdef BUILD_OPTIONS
182 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100183#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200184 "\n\nDefault settings :"
185 "\n maxconn = %d, bufsize = %d, maxrewrite = %d, maxpollevents = %d"
186 "\n\n",
187 DEFAULT_MAXCONN, BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200188
189 list_pollers(stdout);
190 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100191}
192
Willy Tarreaubaaee002006-06-26 02:48:02 +0200193/*
194 * This function prints the command line usage and exits
195 */
196void usage(char *name)
197{
198 display_version();
199 fprintf(stderr,
Willy Tarreau5d01a632009-06-22 16:02:30 +0200200 "Usage : %s [-f <cfgfile>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200201 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
202 " [ -p <pidfile> ] [ -m <max megs> ]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100203 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200204 " -d enters debug mode ; -db only disables background mode.\n"
205 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau6bde87b2009-05-18 16:29:51 +0200206 " -D goes daemon\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200207 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200208 " -c check mode : only check config files and exit\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200209 " -n sets the maximum total # of connections (%d)\n"
210 " -m limits the usable amount of memory (in MB)\n"
211 " -N sets the default, per-proxy maximum # of connections (%d)\n"
212 " -p writes pids of all children to this file\n"
213#if defined(ENABLE_EPOLL)
214 " -de disables epoll() usage even when available\n"
215#endif
Willy Tarreaude99e992007-04-16 00:53:59 +0200216#if defined(ENABLE_SEPOLL)
217 " -ds disables speculative epoll() usage even when available\n"
218#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200219#if defined(ENABLE_KQUEUE)
220 " -dk disables kqueue() usage even when available\n"
221#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200222#if defined(ENABLE_POLL)
223 " -dp disables poll() usage even when available\n"
224#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200225#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100226 " -dS disables splice usage (broken on old kernels)\n"
227#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200228 " -sf/-st [pid ]* finishes/terminates old pids. Must be last arguments.\n"
229 "\n",
230 name, DEFAULT_MAXCONN, cfg_maxpconn);
231 exit(1);
232}
233
234
235
236/*********************************************************************/
237/* more specific functions ***************************************/
238/*********************************************************************/
239
240/*
241 * upon SIGUSR1, let's have a soft stop.
242 */
243void sig_soft_stop(int sig)
244{
245 soft_stop();
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200246 pool_gc2();
Willy Tarreau01b3a532009-05-10 09:59:50 +0200247 signal_register(sig, SIG_IGN);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200248}
249
250/*
251 * upon SIGTTOU, we pause everything
252 */
253void sig_pause(int sig)
254{
255 pause_proxies();
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200256 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200257}
258
259/*
260 * upon SIGTTIN, let's have a soft stop.
261 */
262void sig_listen(int sig)
263{
264 listen_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200265}
266
267/*
268 * this function dumps every server's state when the process receives SIGHUP.
269 */
270void sig_dump_state(int sig)
271{
272 struct proxy *p = proxy;
273
274 Warning("SIGHUP received, dumping servers states.\n");
275 while (p) {
276 struct server *s = p->srv;
277
278 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
279 while (s) {
280 snprintf(trash, sizeof(trash),
Willy Tarreau3b88d442009-04-11 20:44:08 +0200281 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
Willy Tarreaubaaee002006-06-26 02:48:02 +0200282 p->id, s->id,
283 (s->state & SRV_RUNNING) ? "UP" : "DOWN",
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200284 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200285 Warning("%s\n", trash);
286 send_log(p, LOG_NOTICE, "%s\n", trash);
287 s = s->next;
288 }
289
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200290 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
291 if (!p->srv) {
292 snprintf(trash, sizeof(trash),
Willy Tarreau3b88d442009-04-11 20:44:08 +0200293 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200294 p->id,
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200295 p->feconn, p->beconn, p->totpend, p->nbpend, p->counters.cum_feconn, p->counters.cum_beconn);
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200296 } else if (p->srv_act == 0) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200297 snprintf(trash, sizeof(trash),
Willy Tarreau3b88d442009-04-11 20:44:08 +0200298 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
Willy Tarreaubaaee002006-06-26 02:48:02 +0200299 p->id,
300 (p->srv_bck) ? "is running on backup servers" : "has no server available",
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200301 p->feconn, p->beconn, p->totpend, p->nbpend, p->counters.cum_feconn, p->counters.cum_beconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200302 } else {
303 snprintf(trash, sizeof(trash),
304 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
Willy Tarreau3b88d442009-04-11 20:44:08 +0200305 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
Willy Tarreaubaaee002006-06-26 02:48:02 +0200306 p->id, p->srv_act, p->srv_bck,
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200307 p->feconn, p->beconn, p->totpend, p->nbpend, p->counters.cum_feconn, p->counters.cum_beconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200308 }
309 Warning("%s\n", trash);
310 send_log(p, LOG_NOTICE, "%s\n", trash);
311
312 p = p->next;
313 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200314}
315
316void dump(int sig)
317{
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200318#if 0
Willy Tarreau964c9362007-01-07 00:38:00 +0100319 struct task *t;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200320 struct session *s;
Willy Tarreau964c9362007-01-07 00:38:00 +0100321 struct rb_node *node;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200322
Willy Tarreau964c9362007-01-07 00:38:00 +0100323 for(node = rb_first(&wait_queue[0]);
324 node != NULL; node = rb_next(node)) {
325 t = rb_entry(node, struct task, rb_node);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200326 s = t->context;
327 qfprintf(stderr,"[dump] wq: task %p, still %ld ms, "
Willy Tarreau7e5067d2008-12-07 16:27:56 +0100328 "cli=%d, srv=%d, req=%d, rep=%d\n",
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200329 s, tv_ms_remain(&now, &t->expire),
Willy Tarreau7e5067d2008-12-07 16:27:56 +0100330 s->si[0].state,
331 s->si[1].state,
332 s->req->l, s->rep?s->rep->l:0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200333 }
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200334#endif
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200335 /* dump memory usage then free everything possible */
336 dump_pools();
337 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200338}
339
340#ifdef DEBUG_MEMORY
341static void fast_stop(void)
342{
343 struct proxy *p;
344 p = proxy;
345 while (p) {
346 p->grace = 0;
347 p = p->next;
348 }
349 soft_stop();
350}
351
352void sig_int(int sig)
353{
354 /* This would normally be a hard stop,
355 but we want to be sure about deallocation,
356 and so on, so we do a soft stop with
357 0 GRACE time
358 */
359 fast_stop();
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200360 pool_gc2();
Willy Tarreau01b3a532009-05-10 09:59:50 +0200361 /* If we are killed twice, we decide to die */
362 signal_register(sig, SIG_DFL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200363}
364
365void sig_term(int sig)
366{
367 /* This would normally be a hard stop,
368 but we want to be sure about deallocation,
369 and so on, so we do a soft stop with
370 0 GRACE time
371 */
372 fast_stop();
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200373 pool_gc2();
Willy Tarreau01b3a532009-05-10 09:59:50 +0200374 /* If we are killed twice, we decide to die */
375 signal_register(sig, SIG_DFL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200376}
377#endif
378
379
380/*
381 * This function initializes all the necessary variables. It only returns
382 * if everything is OK. If something fails, it exits.
383 */
384void init(int argc, char **argv)
385{
386 int i;
387 int arg_mode = 0; /* MODE_DEBUG, ... */
388 char *old_argv = *argv;
389 char *tmp;
390 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +0200391 int err_code = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200392
Willy Tarreaubaaee002006-06-26 02:48:02 +0200393 /*
394 * Initialize the previously static variables.
395 */
396
Willy Tarreau3eba98a2009-01-25 13:56:13 +0100397 totalconn = actconn = maxfd = listeners = stopping = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200398
399
400#ifdef HAPROXY_MEMMAX
401 global.rlimit_memmax = HAPROXY_MEMMAX;
402#endif
403
Willy Tarreaub0b37bc2008-06-23 14:00:57 +0200404 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200405 start_date = now;
406
Willy Tarreau29857942009-05-10 09:01:21 +0200407 signal_init();
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200408 init_task();
409 init_session();
Willy Tarreau8280d642009-09-23 23:37:52 +0200410 /* warning, we init buffers later */
Willy Tarreaue4d7e552007-05-13 20:19:55 +0200411 init_pendconn();
Willy Tarreau80587432006-12-24 17:47:20 +0100412 init_proto_http();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200413
Willy Tarreau43b78992009-01-25 15:42:27 +0100414 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200415#if defined(ENABLE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +0100416 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200417#endif
418#if defined(ENABLE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +0100419 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200420#endif
Willy Tarreaude99e992007-04-16 00:53:59 +0200421#if defined(ENABLE_SEPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +0100422 global.tune.options |= GTUNE_USE_SEPOLL;
Willy Tarreaude99e992007-04-16 00:53:59 +0200423#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200424#if defined(ENABLE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +0100425 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200426#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200427#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100428 global.tune.options |= GTUNE_USE_SPLICE;
429#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200430
431 pid = getpid();
432 progname = *argv;
433 while ((tmp = strchr(progname, '/')) != NULL)
434 progname = tmp + 1;
435
436 argc--; argv++;
437 while (argc > 0) {
438 char *flag;
439
440 if (**argv == '-') {
441 flag = *argv+1;
442
443 /* 1 arg */
444 if (*flag == 'v') {
445 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +0100446 if (flag[1] == 'v') /* -vv */
447 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200448 exit(0);
449 }
450#if defined(ENABLE_EPOLL)
451 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +0100452 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200453#endif
Willy Tarreaude99e992007-04-16 00:53:59 +0200454#if defined(ENABLE_SEPOLL)
455 else if (*flag == 'd' && flag[1] == 's')
Willy Tarreau43b78992009-01-25 15:42:27 +0100456 global.tune.options &= ~GTUNE_USE_SEPOLL;
Willy Tarreaude99e992007-04-16 00:53:59 +0200457#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200458#if defined(ENABLE_POLL)
459 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +0100460 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200461#endif
Willy Tarreau69cad1a2007-04-10 22:45:11 +0200462#if defined(ENABLE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200463 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +0100464 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200465#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200466#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100467 else if (*flag == 'd' && flag[1] == 'S')
468 global.tune.options &= ~GTUNE_USE_SPLICE;
469#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200470 else if (*flag == 'V')
471 arg_mode |= MODE_VERBOSE;
472 else if (*flag == 'd' && flag[1] == 'b')
473 arg_mode |= MODE_FOREGROUND;
474 else if (*flag == 'd')
475 arg_mode |= MODE_DEBUG;
476 else if (*flag == 'c')
477 arg_mode |= MODE_CHECK;
478 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +0200479 arg_mode |= MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200480 else if (*flag == 'q')
481 arg_mode |= MODE_QUIET;
482 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
483 /* list of pids to finish ('f') or terminate ('t') */
484
485 if (flag[1] == 'f')
486 oldpids_sig = SIGUSR1; /* finish then exit */
487 else
488 oldpids_sig = SIGTERM; /* terminate immediately */
489 argv++; argc--;
490
491 if (argc > 0) {
492 oldpids = calloc(argc, sizeof(int));
493 while (argc > 0) {
494 oldpids[nb_oldpids] = atol(*argv);
495 if (oldpids[nb_oldpids] <= 0)
496 usage(old_argv);
497 argc--; argv++;
498 nb_oldpids++;
499 }
500 }
501 }
502 else { /* >=2 args */
503 argv++; argc--;
504 if (argc == 0)
505 usage(old_argv);
506
507 switch (*flag) {
508 case 'n' : cfg_maxconn = atol(*argv); break;
509 case 'm' : global.rlimit_memmax = atol(*argv); break;
510 case 'N' : cfg_maxpconn = atol(*argv); break;
Willy Tarreau5d01a632009-06-22 16:02:30 +0200511 case 'f' :
512 if (cfg_nbcfgfiles > MAX_CFG_FILES) {
513 Alert("Cannot load configuration file %s : too many configuration files (max %d).\n",
514 *argv, MAX_CFG_FILES);
515 exit(1);
516 }
517 cfg_cfgfile[cfg_nbcfgfiles++] = *argv;
518 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200519 case 'p' : cfg_pidfile = *argv; break;
520 default: usage(old_argv);
521 }
522 }
523 }
524 else
525 usage(old_argv);
526 argv++; argc--;
527 }
528
529 global.mode = MODE_STARTING | /* during startup, we want most of the alerts */
530 (arg_mode & (MODE_DAEMON | MODE_FOREGROUND | MODE_VERBOSE
531 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
532
Willy Tarreau5d01a632009-06-22 16:02:30 +0200533 if (!cfg_nbcfgfiles)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200534 usage(old_argv);
535
536 gethostname(hostname, MAX_HOSTNAME_LEN);
537
538 have_appsession = 0;
539 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200540
541 init_default_instance();
542
Willy Tarreau5d01a632009-06-22 16:02:30 +0200543 for (i = 0; i < cfg_nbcfgfiles; i++) {
Willy Tarreau058e9072009-07-20 09:30:05 +0200544 err_code |= readcfgfile(cfg_cfgfile[i]);
545 if (err_code & (ERR_ABORT|ERR_FATAL))
546 Alert("Error(s) found in configuration file : %s\n", cfg_cfgfile[i]);
547 if (err_code & ERR_ABORT)
Willy Tarreau5d01a632009-06-22 16:02:30 +0200548 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200549 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +0200550
Willy Tarreaubb925012009-07-23 13:36:36 +0200551 err_code |= check_config_validity();
552 if (err_code & (ERR_ABORT|ERR_FATAL)) {
553 Alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200554 exit(1);
555 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200556
557 if (global.mode & MODE_CHECK) {
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200558 qfprintf(stdout, "Configuration file is valid\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200559 exit(0);
560 }
561
Willy Tarreau8280d642009-09-23 23:37:52 +0200562 /* now we know the buffer size, we can initialize the buffers */
563 init_buffer();
564
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200565 if (have_appsession)
566 appsession_init();
567
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +0200568 if (start_checks() < 0)
569 exit(1);
570
Willy Tarreaubaaee002006-06-26 02:48:02 +0200571 if (cfg_maxconn > 0)
572 global.maxconn = cfg_maxconn;
573
574 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +0200575 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200576 global.pidfile = strdup(cfg_pidfile);
577 }
578
579 if (global.maxconn == 0)
580 global.maxconn = DEFAULT_MAXCONN;
581
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100582 if (!global.maxpipes) {
583 /* maxpipes not specified. Count how many frontends and backends
584 * may be using splicing, and bound that to maxconn.
585 */
586 struct proxy *cur;
587 int nbfe = 0, nbbe = 0;
588
589 for (cur = proxy; cur; cur = cur->next) {
590 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
591 if (cur->cap & PR_CAP_FE)
592 nbfe += cur->maxconn;
593 if (cur->cap & PR_CAP_BE)
Willy Tarreauafb48762009-01-25 10:42:05 +0100594 nbbe += cur->fullconn ? cur->fullconn : global.maxconn;
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100595 }
596 }
597 global.maxpipes = MAX(nbfe, nbbe);
598 if (global.maxpipes > global.maxconn)
599 global.maxpipes = global.maxconn;
Willy Tarreau686ac822009-01-25 14:06:58 +0100600 global.maxpipes /= 4;
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100601 }
602
603
Willy Tarreaubaaee002006-06-26 02:48:02 +0200604 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +0100605 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200606
Willy Tarreau1db37712007-06-03 17:16:49 +0200607 if (global.tune.maxpollevents <= 0)
608 global.tune.maxpollevents = MAX_POLL_EVENTS;
609
Willy Tarreauf49d1df2009-03-01 08:35:41 +0100610 if (global.tune.maxaccept == 0) {
Willy Tarreaua0250ba2008-01-06 11:22:57 +0100611 if (global.nbproc > 1)
612 global.tune.maxaccept = 8; /* leave some conns to other processes */
613 else
Willy Tarreauf49d1df2009-03-01 08:35:41 +0100614 global.tune.maxaccept = 100; /* accept many incoming conns at once */
Willy Tarreaua0250ba2008-01-06 11:22:57 +0100615 }
616
Willy Tarreau6f4a82c2009-03-21 20:43:57 +0100617 if (global.tune.recv_enough == 0)
618 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
619
Willy Tarreau27a674e2009-08-17 07:23:33 +0200620 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
621 global.tune.maxrewrite = global.tune.bufsize / 2;
622
Willy Tarreaubaaee002006-06-26 02:48:02 +0200623 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
624 /* command line debug mode inhibits configuration mode */
625 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
626 }
627 global.mode |= (arg_mode & (MODE_DAEMON | MODE_FOREGROUND | MODE_QUIET |
Willy Tarreaufbee7132007-10-18 13:53:22 +0200628 MODE_VERBOSE | MODE_DEBUG ));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200629
630 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
631 Warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
632 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
633 }
634
635 if ((global.nbproc > 1) && !(global.mode & MODE_DAEMON)) {
636 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
637 Warning("<nbproc> is only meaningful in daemon mode. Setting limit to 1 process.\n");
638 global.nbproc = 1;
639 }
640
641 if (global.nbproc < 1)
642 global.nbproc = 1;
643
Willy Tarreaubaaee002006-06-26 02:48:02 +0200644 fdtab = (struct fdtab *)calloc(1,
645 sizeof(struct fdtab) * (global.maxsock));
646 for (i = 0; i < global.maxsock; i++) {
647 fdtab[i].state = FD_STCLOSE;
648 }
Willy Tarreau4f60f162007-04-08 16:39:58 +0200649
Willy Tarreauef1d1f82007-04-16 00:25:25 +0200650 /*
651 * Note: we could register external pollers here.
652 * Built-in pollers have been registered before main().
653 */
Willy Tarreau4f60f162007-04-08 16:39:58 +0200654
Willy Tarreau43b78992009-01-25 15:42:27 +0100655 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200656 disable_poller("kqueue");
657
Willy Tarreau43b78992009-01-25 15:42:27 +0100658 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200659 disable_poller("epoll");
660
Willy Tarreau43b78992009-01-25 15:42:27 +0100661 if (!(global.tune.options & GTUNE_USE_SEPOLL))
Willy Tarreaude99e992007-04-16 00:53:59 +0200662 disable_poller("sepoll");
663
Willy Tarreau43b78992009-01-25 15:42:27 +0100664 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200665 disable_poller("poll");
666
Willy Tarreau43b78992009-01-25 15:42:27 +0100667 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200668 disable_poller("select");
669
670 /* Note: we could disable any poller by name here */
671
Willy Tarreau2ff76222007-04-09 19:29:56 +0200672 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
673 list_pollers(stderr);
674
Willy Tarreau4f60f162007-04-08 16:39:58 +0200675 if (!init_pollers()) {
Willy Tarreau2ff76222007-04-09 19:29:56 +0200676 Alert("No polling mechanism available.\n");
Willy Tarreau4f60f162007-04-08 16:39:58 +0200677 exit(1);
678 }
Willy Tarreau2ff76222007-04-09 19:29:56 +0200679 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
680 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +0200681 }
682
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +0200683 if (!global.node)
684 global.node = strdup(hostname);
685
Willy Tarreaubaaee002006-06-26 02:48:02 +0200686}
687
688void deinit(void)
689{
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200690 struct proxy *p = proxy, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200691 struct cap_hdr *h,*h_next;
692 struct server *s,*s_next;
693 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200694 struct acl_cond *cond, *condb;
695 struct hdr_exp *exp, *expb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200696 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200697 struct switching_rule *rule, *ruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200698 struct redirect_rule *rdr, *rdrb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200699 struct uri_auth *uap, *ua = NULL;
700 struct user_auth *user;
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200701 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200702
Willy Tarreaubaaee002006-06-26 02:48:02 +0200703 while (p) {
Willy Tarreaua534fea2008-08-03 12:19:50 +0200704 free(p->id);
705 free(p->check_req);
706 free(p->cookie_name);
707 free(p->cookie_domain);
708 free(p->url_param_name);
709 free(p->capture_name);
710 free(p->monitor_uri);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200711
Willy Tarreaua534fea2008-08-03 12:19:50 +0200712 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200713 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200714
Willy Tarreaua534fea2008-08-03 12:19:50 +0200715 for (i = 0; i < p->nb_reqadd; i++)
716 free(p->req_add[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200717
Willy Tarreaua534fea2008-08-03 12:19:50 +0200718 for (i = 0; i < p->nb_rspadd; i++)
719 free(p->rsp_add[i]);
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200720
721 list_for_each_entry_safe(cond, condb, &p->block_cond, list) {
722 LIST_DEL(&cond->list);
723 prune_acl_cond(cond);
724 free(cond);
725 }
726
Willy Tarreaub80c2302007-11-30 20:51:32 +0100727 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
728 LIST_DEL(&cond->list);
729 prune_acl_cond(cond);
730 free(cond);
731 }
732
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200733 for (exp = p->req_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200734 if (exp->preg) {
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200735 regfree((regex_t *)exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200736 free((regex_t *)exp->preg);
737 }
738
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200739 if (exp->replace && exp->action != ACT_SETBE)
740 free((char *)exp->replace);
741 expb = exp;
742 exp = exp->next;
743 free(expb);
744 }
745
746 for (exp = p->rsp_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200747 if (exp->preg) {
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200748 regfree((regex_t *)exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200749 free((regex_t *)exp->preg);
750 }
751
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200752 if (exp->replace && exp->action != ACT_SETBE)
753 free((char *)exp->replace);
754 expb = exp;
755 exp = exp->next;
756 free(expb);
757 }
758
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200759 /* build a list of unique uri_auths */
760 if (!ua)
761 ua = p->uri_auth;
762 else {
763 /* check if p->uri_auth is unique */
764 for (uap = ua; uap; uap=uap->next)
765 if (uap == p->uri_auth)
766 break;
767
Willy Tarreauaccc4e12008-06-24 11:14:45 +0200768 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200769 /* add it, if it is */
770 p->uri_auth->next = ua;
771 ua = p->uri_auth;
772 }
773 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200774
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200775 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
776 LIST_DEL(&acl->list);
777 prune_acl(acl);
778 free(acl);
779 }
780
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200781 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
782 LIST_DEL(&rule->list);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200783 prune_acl_cond(rule->cond);
784 free(rule->cond);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200785 free(rule);
786 }
787
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200788 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
789 LIST_DEL(&rdr->list);
790 prune_acl_cond(rdr->cond);
791 free(rdr->cond);
792 free(rdr->rdr_str);
793 free(rdr);
794 }
795
Willy Tarreaua534fea2008-08-03 12:19:50 +0200796 free(p->appsession_name);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200797
798 h = p->req_cap;
799 while (h) {
800 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +0200801 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200802 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200803 free(h);
804 h = h_next;
805 }/* end while(h) */
806
807 h = p->rsp_cap;
808 while (h) {
809 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +0200810 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200811 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200812 free(h);
813 h = h_next;
814 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200815
Willy Tarreaubaaee002006-06-26 02:48:02 +0200816 s = p->srv;
817 while (s) {
818 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200819
820 if (s->check) {
821 task_delete(s->check);
822 task_free(s->check);
823 }
824
Willy Tarreaua534fea2008-08-03 12:19:50 +0200825 free(s->id);
826 free(s->cookie);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200827 free(s);
828 s = s_next;
829 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200830
Willy Tarreaubaaee002006-06-26 02:48:02 +0200831 l = p->listen;
832 while (l) {
833 l_next = l->next;
834 free(l);
835 l = l_next;
836 }/* end while(l) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200837
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200838 pool_destroy2(p->req_cap_pool);
839 pool_destroy2(p->rsp_cap_pool);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200840 pool_destroy2(p->hdr_idx_pool);
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200841 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200842 p = p->next;
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200843 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200844 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +0200845
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200846 while (ua) {
847 uap = ua;
848 ua = ua->next;
849
Willy Tarreaua534fea2008-08-03 12:19:50 +0200850 free(uap->uri_prefix);
851 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +0200852 free(uap->node);
853 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200854
855 while (uap->users) {
856 user = uap->users;
857 uap->users = uap->users->next;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200858 free(user->user_pwd);
859 free(user);
860 }
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200861 free(uap);
862 }
863
Willy Tarreaudd815982007-10-16 12:25:14 +0200864 protocol_unbind_all();
865
Willy Tarreaua534fea2008-08-03 12:19:50 +0200866 free(global.chroot); global.chroot = NULL;
867 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +0200868 free(global.node); global.node = NULL;
869 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +0200870 free(fdtab); fdtab = NULL;
871 free(oldpids); oldpids = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200872
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200873 pool_destroy2(pool2_session);
Willy Tarreau7341d942007-05-13 19:56:02 +0200874 pool_destroy2(pool2_buffer);
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200875 pool_destroy2(pool2_requri);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200876 pool_destroy2(pool2_task);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200877 pool_destroy2(pool2_capture);
Willy Tarreau63963c62007-05-13 21:29:55 +0200878 pool_destroy2(pool2_appsess);
Willy Tarreaue4d7e552007-05-13 20:19:55 +0200879 pool_destroy2(pool2_pendconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200880
881 if (have_appsession) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200882 pool_destroy2(apools.serverid);
883 pool_destroy2(apools.sessid);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200884 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200885
886 deinit_pollers();
887
Willy Tarreaubaaee002006-06-26 02:48:02 +0200888} /* end deinit() */
889
890/* sends the signal <sig> to all pids found in <oldpids> */
891static void tell_old_pids(int sig)
892{
893 int p;
894 for (p = 0; p < nb_oldpids; p++)
895 kill(oldpids[p], sig);
896}
897
Willy Tarreau4f60f162007-04-08 16:39:58 +0200898/*
899 * Runs the polling loop
900 *
901 * FIXME:
902 * - we still use 'listeners' to check whether we want to stop or not.
903 *
904 */
905void run_poll_loop()
906{
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200907 int next;
Willy Tarreau4f60f162007-04-08 16:39:58 +0200908
Willy Tarreaub0b37bc2008-06-23 14:00:57 +0200909 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +0200910 while (1) {
Willy Tarreau29857942009-05-10 09:01:21 +0200911 /* check if we caught some signals and process them */
912 signal_process_queue();
913
Willy Tarreau58b458d2008-06-29 22:40:23 +0200914 /* Check if we can expire some tasks */
915 wake_expired_tasks(&next);
916
917 /* Process a few tasks */
Willy Tarreaud825eef2007-05-12 22:35:00 +0200918 process_runnable_tasks(&next);
Willy Tarreau4f60f162007-04-08 16:39:58 +0200919
Willy Tarreau58b458d2008-06-29 22:40:23 +0200920 /* maintain all proxies in a consistent state. This should quickly
921 * become a task because it becomes expensive when there are huge
922 * numbers of proxies. */
923 maintain_proxies(&next);
924
Willy Tarreau4f60f162007-04-08 16:39:58 +0200925 /* stop when there's no connection left and we don't allow them anymore */
926 if (!actconn && listeners == 0)
927 break;
928
Willy Tarreau58b458d2008-06-29 22:40:23 +0200929 /* The poller will ensure it returns around <next> */
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200930 cur_poller.poll(&cur_poller, next);
Willy Tarreau4f60f162007-04-08 16:39:58 +0200931 }
932}
933
934
Willy Tarreaubaaee002006-06-26 02:48:02 +0200935int main(int argc, char **argv)
936{
937 int err, retry;
938 struct rlimit limit;
939 FILE *pidfile = NULL;
940 init(argc, argv);
941
Willy Tarreau01b3a532009-05-10 09:59:50 +0200942 signal_register(SIGQUIT, dump);
943 signal_register(SIGUSR1, sig_soft_stop);
944 signal_register(SIGHUP, sig_dump_state);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200945#ifdef DEBUG_MEMORY
Willy Tarreau01b3a532009-05-10 09:59:50 +0200946 signal_register(SIGINT, sig_int);
947 signal_register(SIGTERM, sig_term);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200948#endif
949
950 /* on very high loads, a sigpipe sometimes happen just between the
951 * getsockopt() which tells "it's OK to write", and the following write :-(
952 */
Willy Tarreaud6d06902009-08-19 11:22:33 +0200953#if !MSG_NOSIGNAL || defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200954 signal(SIGPIPE, SIG_IGN);
955#endif
956
957 /* We will loop at most 100 times with 10 ms delay each time.
958 * That's at most 1 second. We only send a signal to old pids
959 * if we cannot grab at least one port.
960 */
961 retry = MAX_START_RETRIES;
962 err = ERR_NONE;
963 while (retry >= 0) {
964 struct timeval w;
965 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +0100966 /* exit the loop on no error or fatal error */
967 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200968 break;
969 if (nb_oldpids == 0)
970 break;
971
972 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
973 * listening sockets. So on those platforms, it would be wiser to
974 * simply send SIGUSR1, which will not be undoable.
975 */
976 tell_old_pids(SIGTTOU);
977 /* give some time to old processes to stop listening */
978 w.tv_sec = 0;
979 w.tv_usec = 10*1000;
980 select(0, NULL, NULL, NULL, &w);
981 retry--;
982 }
983
984 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +0100985 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +0200986 if (retry != MAX_START_RETRIES && nb_oldpids) {
987 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200988 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +0200989 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200990 exit(1);
991 }
992
993 if (listeners == 0) {
994 Alert("[%s.main()] No enabled listener found (check the <listen> keywords) ! Exiting.\n", argv[0]);
995 /* Note: we don't have to send anything to the old pids because we
996 * never stopped them. */
997 exit(1);
998 }
999
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01001000 if ((protocol_bind_all() & ~ERR_WARN) != ERR_NONE) {
Willy Tarreaudd815982007-10-16 12:25:14 +02001001 Alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
1002 protocol_unbind_all(); /* cleanup everything we can */
1003 if (nb_oldpids)
1004 tell_old_pids(SIGTTIN);
1005 exit(1);
1006 }
1007
Willy Tarreaubaaee002006-06-26 02:48:02 +02001008 /* prepare pause/play signals */
Willy Tarreau01b3a532009-05-10 09:59:50 +02001009 signal_register(SIGTTOU, sig_pause);
1010 signal_register(SIGTTIN, sig_listen);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001011
Willy Tarreaubaaee002006-06-26 02:48:02 +02001012 /* MODE_QUIET can inhibit alerts and warnings below this line */
1013
1014 global.mode &= ~MODE_STARTING;
1015 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
1016 /* detach from the tty */
1017 fclose(stdin); fclose(stdout); fclose(stderr);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001018 }
1019
1020 /* open log & pid files before the chroot */
1021 if (global.mode & MODE_DAEMON && global.pidfile != NULL) {
1022 int pidfd;
1023 unlink(global.pidfile);
1024 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
1025 if (pidfd < 0) {
1026 Alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
1027 if (nb_oldpids)
1028 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02001029 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001030 exit(1);
1031 }
1032 pidfile = fdopen(pidfd, "w");
1033 }
1034
Willy Tarreaubaaee002006-06-26 02:48:02 +02001035 /* ulimits */
1036 if (!global.rlimit_nofile)
1037 global.rlimit_nofile = global.maxsock;
1038
1039 if (global.rlimit_nofile) {
1040 limit.rlim_cur = limit.rlim_max = global.rlimit_nofile;
1041 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
1042 Warning("[%s.main()] Cannot raise FD limit to %d.\n", argv[0], global.rlimit_nofile);
1043 }
1044 }
1045
1046 if (global.rlimit_memmax) {
1047 limit.rlim_cur = limit.rlim_max =
1048 global.rlimit_memmax * 1048576 / global.nbproc;
1049#ifdef RLIMIT_AS
1050 if (setrlimit(RLIMIT_AS, &limit) == -1) {
1051 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
1052 argv[0], global.rlimit_memmax);
1053 }
1054#else
1055 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
1056 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
1057 argv[0], global.rlimit_memmax);
1058 }
1059#endif
1060 }
Willy Tarreau6d1a9882007-01-07 02:03:04 +01001061
Willy Tarreaub38651a2007-03-24 17:24:39 +01001062#ifdef CONFIG_HAP_CTTPROXY
1063 if (global.last_checks & LSTCHK_CTTPROXY) {
1064 int ret;
1065
1066 ret = check_cttproxy_version();
1067 if (ret < 0) {
1068 Alert("[%s.main()] Cannot enable cttproxy.\n%s",
1069 argv[0],
1070 (ret == -1) ? " Incorrect module version.\n"
1071 : " Make sure you have enough permissions and that the module is loaded.\n");
Willy Tarreaudd815982007-10-16 12:25:14 +02001072 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01001073 exit(1);
1074 }
1075 }
1076#endif
1077
1078 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
1079 Alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
Willy Tarreau4e30ed72009-02-04 18:02:48 +01001080 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02001081 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01001082 exit(1);
1083 }
1084
Willy Tarreau4e30ed72009-02-04 18:02:48 +01001085 /* If the user is not root, we'll still let him try the configuration
1086 * but we inform him that unexpected behaviour may occur.
1087 */
1088 if ((global.last_checks & LSTCHK_NETADM) && getuid())
1089 Warning("[%s.main()] Some options which require full privileges"
1090 " might not work well.\n"
1091 "", argv[0]);
1092
Willy Tarreauf223cc02007-10-15 18:57:08 +02001093 /* chroot if needed */
1094 if (global.chroot != NULL) {
1095 if (chroot(global.chroot) == -1) {
1096 Alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
1097 if (nb_oldpids)
1098 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02001099 protocol_unbind_all();
Willy Tarreauf223cc02007-10-15 18:57:08 +02001100 exit(1);
1101 }
1102 chdir("/");
1103 }
1104
Willy Tarreaubaaee002006-06-26 02:48:02 +02001105 if (nb_oldpids)
1106 tell_old_pids(oldpids_sig);
1107
1108 /* Note that any error at this stage will be fatal because we will not
1109 * be able to restart the old pids.
1110 */
1111
1112 /* setgid / setuid */
1113 if (global.gid && setgid(global.gid) == -1) {
1114 Alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
Willy Tarreaudd815982007-10-16 12:25:14 +02001115 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001116 exit(1);
1117 }
1118
1119 if (global.uid && setuid(global.uid) == -1) {
1120 Alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Willy Tarreaudd815982007-10-16 12:25:14 +02001121 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001122 exit(1);
1123 }
1124
1125 /* check ulimits */
1126 limit.rlim_cur = limit.rlim_max = 0;
1127 getrlimit(RLIMIT_NOFILE, &limit);
1128 if (limit.rlim_cur < global.maxsock) {
1129 Warning("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
Willy Tarreau1772ece2009-04-03 14:49:12 +02001130 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001131 }
1132
1133 if (global.mode & MODE_DAEMON) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01001134 struct proxy *px;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001135 int ret = 0;
1136 int proc;
1137
1138 /* the father launches the required number of processes */
1139 for (proc = 0; proc < global.nbproc; proc++) {
1140 ret = fork();
1141 if (ret < 0) {
1142 Alert("[%s.main()] Cannot fork.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02001143 protocol_unbind_all();
Willy Tarreaud6803712007-10-16 07:44:56 +02001144 exit(1); /* there has been an error */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001145 }
1146 else if (ret == 0) /* child breaks here */
1147 break;
1148 if (pidfile != NULL) {
1149 fprintf(pidfile, "%d\n", ret);
1150 fflush(pidfile);
1151 }
Willy Tarreaudcd47712007-11-04 23:35:08 +01001152 relative_pid++; /* each child will get a different one */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001153 }
1154 /* close the pidfile both in children and father */
1155 if (pidfile != NULL)
1156 fclose(pidfile);
1157 free(global.pidfile);
Krzysztof Oledzki56f1e8b2007-10-11 18:30:14 +02001158 global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001159
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01001160 /* we might have to unbind some proxies from some processes */
1161 px = proxy;
1162 while (px != NULL) {
1163 if (px->bind_proc && px->state != PR_STSTOPPED) {
1164 if (!(px->bind_proc & (1 << proc)))
1165 stop_proxy(px);
1166 }
1167 px = px->next;
1168 }
1169
Willy Tarreaubaaee002006-06-26 02:48:02 +02001170 if (proc == global.nbproc)
1171 exit(0); /* parent must leave */
1172
1173 /* if we're NOT in QUIET mode, we should now close the 3 first FDs to ensure
1174 * that we can detach from the TTY. We MUST NOT do it in other cases since
1175 * it would have already be done, and 0-2 would have been affected to listening
1176 * sockets
1177 */
Willy Tarreau106cb762008-11-16 07:40:34 +01001178 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02001179 /* detach from the tty */
1180 fclose(stdin); fclose(stdout); fclose(stderr);
Willy Tarreau106cb762008-11-16 07:40:34 +01001181 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001182 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
1183 }
1184 pid = getpid(); /* update child's pid */
1185 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02001186 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001187 }
1188
Willy Tarreaudd815982007-10-16 12:25:14 +02001189 protocol_enable_all();
Willy Tarreau4f60f162007-04-08 16:39:58 +02001190 /*
1191 * That's it : the central polling loop. Run until we stop.
1192 */
1193 run_poll_loop();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001194
1195 /* Free all Hash Keys and all Hash elements */
1196 appsession_cleanup();
1197 /* Do some cleanup */
1198 deinit();
1199
1200 exit(0);
1201}
1202
1203
1204/*
1205 * Local variables:
1206 * c-indent-level: 8
1207 * c-basic-offset: 8
1208 * End:
1209 */