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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau7c669d72008-06-20 15:04:11 +02003 * Copyright 2000-2008 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 Tarreaubaaee002006-06-26 02:48:02 +020092#include <proto/stream_sock.h>
93#include <proto/task.h>
94
Willy Tarreau6d1a9882007-01-07 02:03:04 +010095#ifdef CONFIG_HAP_TCPSPLICE
96#include <libtcpsplice.h>
97#endif
98
Willy Tarreaub38651a2007-03-24 17:24:39 +010099#ifdef CONFIG_HAP_CTTPROXY
100#include <proto/cttproxy.h>
101#endif
102
Willy Tarreaubaaee002006-06-26 02:48:02 +0200103/*********************************************************************/
104
105/*********************************************************************/
106
107char *cfg_cfgfile = NULL; /* configuration file */
108char *progname = NULL; /* program name */
109int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100110int relative_pid = 1; /* process id starting at 1 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200111
112/* global options */
113struct global global = {
114 logfac1 : -1,
115 logfac2 : -1,
116 loglev1 : 7, /* max syslog level : debug */
117 loglev2 : 7,
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200118 .stats_timeout = MS_TO_TICKS(10000), /* stats timeout = 10 seconds */
Willy Tarreau03f6d672007-10-18 15:15:57 +0200119 .stats_sock = {
120 .timeout = &global.stats_timeout,
121 .maxconn = 10, /* 10 concurrent stats connections */
122 .perm = {
123 .ux = {
124 .uid = -1,
125 .gid = -1,
126 .mode = 0,
127 }
128 }
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
153/*
154 * Syslog facilities and levels. Conforming to RFC3164.
155 */
156
157#define MAX_HOSTNAME_LEN 32
158static char hostname[MAX_HOSTNAME_LEN] = "";
159
160
161/*********************************************************************/
162/* general purpose functions ***************************************/
163/*********************************************************************/
164
165void display_version()
166{
167 printf("HA-Proxy version " HAPROXY_VERSION " " HAPROXY_DATE"\n");
Willy Tarreau7b4c5ae2008-04-19 21:06:14 +0200168 printf("Copyright 2000-2008 Willy Tarreau <w@1wt.eu>\n\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200169}
170
Willy Tarreau7b066db2007-12-02 11:28:59 +0100171void display_build_opts()
172{
173 printf("Build options :"
174#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100175 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100176#endif
177#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100178 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100179#endif
180#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100181 "\n CC = " BUILD_CC
182#endif
183#ifdef BUILD_CFLAGS
184 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100185#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100186#ifdef BUILD_OPTIONS
187 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100188#endif
189 "\n\n");
190}
191
Willy Tarreaubaaee002006-06-26 02:48:02 +0200192/*
193 * This function prints the command line usage and exits
194 */
195void usage(char *name)
196{
197 display_version();
198 fprintf(stderr,
199 "Usage : %s -f <cfgfile> [ -vdV"
200 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
201 " [ -p <pidfile> ] [ -m <max megs> ]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100202 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200203 " -d enters debug mode ; -db only disables background mode.\n"
204 " -V enters verbose mode (disables quiet mode)\n"
205 " -D goes daemon ; implies -q\n"
206 " -q quiet mode : don't display messages\n"
207 " -c check mode : only check config file and exit\n"
208 " -n sets the maximum total # of connections (%d)\n"
209 " -m limits the usable amount of memory (in MB)\n"
210 " -N sets the default, per-proxy maximum # of connections (%d)\n"
211 " -p writes pids of all children to this file\n"
212#if defined(ENABLE_EPOLL)
213 " -de disables epoll() usage even when available\n"
214#endif
Willy Tarreaude99e992007-04-16 00:53:59 +0200215#if defined(ENABLE_SEPOLL)
216 " -ds disables speculative epoll() usage even when available\n"
217#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200218#if defined(ENABLE_KQUEUE)
219 " -dk disables kqueue() usage even when available\n"
220#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200221#if defined(ENABLE_POLL)
222 " -dp disables poll() usage even when available\n"
223#endif
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100224#if defined(CONFIG_HAP_LINUX_SPLICE) || defined(CONFIG_HAP_TCPSPLICE)
225 " -dS disables splice usage (broken on old kernels)\n"
226#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200227 " -sf/-st [pid ]* finishes/terminates old pids. Must be last arguments.\n"
228 "\n",
229 name, DEFAULT_MAXCONN, cfg_maxpconn);
230 exit(1);
231}
232
233
234
235/*********************************************************************/
236/* more specific functions ***************************************/
237/*********************************************************************/
238
239/*
240 * upon SIGUSR1, let's have a soft stop.
241 */
242void sig_soft_stop(int sig)
243{
244 soft_stop();
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200245 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200246 signal(sig, SIG_IGN);
247}
248
249/*
250 * upon SIGTTOU, we pause everything
251 */
252void sig_pause(int sig)
253{
254 pause_proxies();
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200255 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200256 signal(sig, sig_pause);
257}
258
259/*
260 * upon SIGTTIN, let's have a soft stop.
261 */
262void sig_listen(int sig)
263{
264 listen_proxies();
265 signal(sig, sig_listen);
266}
267
268/*
269 * this function dumps every server's state when the process receives SIGHUP.
270 */
271void sig_dump_state(int sig)
272{
273 struct proxy *p = proxy;
274
275 Warning("SIGHUP received, dumping servers states.\n");
276 while (p) {
277 struct server *s = p->srv;
278
279 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
280 while (s) {
281 snprintf(trash, sizeof(trash),
282 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %d tot.",
283 p->id, s->id,
284 (s->state & SRV_RUNNING) ? "UP" : "DOWN",
285 s->cur_sess, s->nbpend, s->cum_sess);
286 Warning("%s\n", trash);
287 send_log(p, LOG_NOTICE, "%s\n", trash);
288 s = s->next;
289 }
290
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200291 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
292 if (!p->srv) {
293 snprintf(trash, sizeof(trash),
294 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %d+%d.",
295 p->id,
296 p->feconn, p->beconn, p->totpend, p->nbpend, p->cum_feconn, p->cum_beconn);
297 } else if (p->srv_act == 0) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200298 snprintf(trash, sizeof(trash),
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100299 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %d+%d.",
Willy Tarreaubaaee002006-06-26 02:48:02 +0200300 p->id,
301 (p->srv_bck) ? "is running on backup servers" : "has no server available",
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100302 p->feconn, p->beconn, p->totpend, p->nbpend, p->cum_feconn, p->cum_beconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200303 } else {
304 snprintf(trash, sizeof(trash),
305 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100306 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %d+%d.",
Willy Tarreaubaaee002006-06-26 02:48:02 +0200307 p->id, p->srv_act, p->srv_bck,
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100308 p->feconn, p->beconn, p->totpend, p->nbpend, p->cum_feconn, p->cum_beconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200309 }
310 Warning("%s\n", trash);
311 send_log(p, LOG_NOTICE, "%s\n", trash);
312
313 p = p->next;
314 }
315 signal(sig, sig_dump_state);
316}
317
318void dump(int sig)
319{
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200320#if 0
Willy Tarreau964c9362007-01-07 00:38:00 +0100321 struct task *t;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200322 struct session *s;
Willy Tarreau964c9362007-01-07 00:38:00 +0100323 struct rb_node *node;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200324
Willy Tarreau964c9362007-01-07 00:38:00 +0100325 for(node = rb_first(&wait_queue[0]);
326 node != NULL; node = rb_next(node)) {
327 t = rb_entry(node, struct task, rb_node);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200328 s = t->context;
329 qfprintf(stderr,"[dump] wq: task %p, still %ld ms, "
Willy Tarreau7e5067d2008-12-07 16:27:56 +0100330 "cli=%d, srv=%d, req=%d, rep=%d\n",
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200331 s, tv_ms_remain(&now, &t->expire),
Willy Tarreau7e5067d2008-12-07 16:27:56 +0100332 s->si[0].state,
333 s->si[1].state,
334 s->req->l, s->rep?s->rep->l:0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200335 }
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200336#endif
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200337 /* dump memory usage then free everything possible */
338 dump_pools();
339 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200340}
341
342#ifdef DEBUG_MEMORY
343static void fast_stop(void)
344{
345 struct proxy *p;
346 p = proxy;
347 while (p) {
348 p->grace = 0;
349 p = p->next;
350 }
351 soft_stop();
352}
353
354void sig_int(int sig)
355{
356 /* This would normally be a hard stop,
357 but we want to be sure about deallocation,
358 and so on, so we do a soft stop with
359 0 GRACE time
360 */
361 fast_stop();
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200362 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200363 /* If we are killed twice, we decide to die*/
364 signal(sig, SIG_DFL);
365}
366
367void sig_term(int sig)
368{
369 /* This would normally be a hard stop,
370 but we want to be sure about deallocation,
371 and so on, so we do a soft stop with
372 0 GRACE time
373 */
374 fast_stop();
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200375 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200376 /* If we are killed twice, we decide to die*/
377 signal(sig, SIG_DFL);
378}
379#endif
380
381
382/*
383 * This function initializes all the necessary variables. It only returns
384 * if everything is OK. If something fails, it exits.
385 */
386void init(int argc, char **argv)
387{
388 int i;
389 int arg_mode = 0; /* MODE_DEBUG, ... */
390 char *old_argv = *argv;
391 char *tmp;
392 char *cfg_pidfile = NULL;
393
Willy Tarreaubaaee002006-06-26 02:48:02 +0200394 /*
395 * Initialize the previously static variables.
396 */
397
Willy Tarreau3eba98a2009-01-25 13:56:13 +0100398 totalconn = actconn = maxfd = listeners = stopping = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200399
400
401#ifdef HAPROXY_MEMMAX
402 global.rlimit_memmax = HAPROXY_MEMMAX;
403#endif
404
Willy Tarreaub0b37bc2008-06-23 14:00:57 +0200405 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200406 start_date = now;
407
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200408 init_task();
409 init_session();
Willy Tarreaue4d7e552007-05-13 20:19:55 +0200410 init_buffer();
411 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 Tarreau3ab68cf2009-01-25 16:03:28 +0100427#if defined(CONFIG_HAP_LINUX_SPLICE) || defined(CONFIG_HAP_TCPSPLICE)
428 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 Tarreau3ab68cf2009-01-25 16:03:28 +0100466#if defined(CONFIG_HAP_LINUX_SPLICE) || defined(CONFIG_HAP_TCPSPLICE)
467 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')
479 arg_mode |= MODE_DAEMON | MODE_QUIET;
480 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;
511 case 'f' : cfg_cfgfile = *argv; break;
512 case 'p' : cfg_pidfile = *argv; break;
513 default: usage(old_argv);
514 }
515 }
516 }
517 else
518 usage(old_argv);
519 argv++; argc--;
520 }
521
522 global.mode = MODE_STARTING | /* during startup, we want most of the alerts */
523 (arg_mode & (MODE_DAEMON | MODE_FOREGROUND | MODE_VERBOSE
524 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
525
526 if (!cfg_cfgfile)
527 usage(old_argv);
528
529 gethostname(hostname, MAX_HOSTNAME_LEN);
530
531 have_appsession = 0;
532 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
533 if (readcfgfile(cfg_cfgfile) < 0) {
534 Alert("Error reading configuration file : %s\n", cfg_cfgfile);
535 exit(1);
536 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +0200537
Willy Tarreaubaaee002006-06-26 02:48:02 +0200538 if (have_appsession)
539 appsession_init();
540
541 if (global.mode & MODE_CHECK) {
542 qfprintf(stdout, "Configuration file is valid : %s\n", cfg_cfgfile);
543 exit(0);
544 }
545
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +0200546 if (start_checks() < 0)
547 exit(1);
548
Willy Tarreaubaaee002006-06-26 02:48:02 +0200549 if (cfg_maxconn > 0)
550 global.maxconn = cfg_maxconn;
551
552 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +0200553 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200554 global.pidfile = strdup(cfg_pidfile);
555 }
556
557 if (global.maxconn == 0)
558 global.maxconn = DEFAULT_MAXCONN;
559
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100560 if (!global.maxpipes) {
561 /* maxpipes not specified. Count how many frontends and backends
562 * may be using splicing, and bound that to maxconn.
563 */
564 struct proxy *cur;
565 int nbfe = 0, nbbe = 0;
566
567 for (cur = proxy; cur; cur = cur->next) {
568 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
569 if (cur->cap & PR_CAP_FE)
570 nbfe += cur->maxconn;
571 if (cur->cap & PR_CAP_BE)
Willy Tarreauafb48762009-01-25 10:42:05 +0100572 nbbe += cur->fullconn ? cur->fullconn : global.maxconn;
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100573 }
574 }
575 global.maxpipes = MAX(nbfe, nbbe);
576 if (global.maxpipes > global.maxconn)
577 global.maxpipes = global.maxconn;
Willy Tarreau686ac822009-01-25 14:06:58 +0100578 global.maxpipes /= 4;
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100579 }
580
581
Willy Tarreaubaaee002006-06-26 02:48:02 +0200582 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +0100583 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200584
Willy Tarreau1db37712007-06-03 17:16:49 +0200585 if (global.tune.maxpollevents <= 0)
586 global.tune.maxpollevents = MAX_POLL_EVENTS;
587
Willy Tarreauf49d1df2009-03-01 08:35:41 +0100588 if (global.tune.maxaccept == 0) {
Willy Tarreaua0250ba2008-01-06 11:22:57 +0100589 if (global.nbproc > 1)
590 global.tune.maxaccept = 8; /* leave some conns to other processes */
591 else
Willy Tarreauf49d1df2009-03-01 08:35:41 +0100592 global.tune.maxaccept = 100; /* accept many incoming conns at once */
Willy Tarreaua0250ba2008-01-06 11:22:57 +0100593 }
594
Willy Tarreaubaaee002006-06-26 02:48:02 +0200595 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
596 /* command line debug mode inhibits configuration mode */
597 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
598 }
599 global.mode |= (arg_mode & (MODE_DAEMON | MODE_FOREGROUND | MODE_QUIET |
Willy Tarreaufbee7132007-10-18 13:53:22 +0200600 MODE_VERBOSE | MODE_DEBUG ));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200601
602 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
603 Warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
604 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
605 }
606
607 if ((global.nbproc > 1) && !(global.mode & MODE_DAEMON)) {
608 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
609 Warning("<nbproc> is only meaningful in daemon mode. Setting limit to 1 process.\n");
610 global.nbproc = 1;
611 }
612
613 if (global.nbproc < 1)
614 global.nbproc = 1;
615
Willy Tarreaubaaee002006-06-26 02:48:02 +0200616 fdtab = (struct fdtab *)calloc(1,
617 sizeof(struct fdtab) * (global.maxsock));
618 for (i = 0; i < global.maxsock; i++) {
619 fdtab[i].state = FD_STCLOSE;
620 }
Willy Tarreau4f60f162007-04-08 16:39:58 +0200621
Willy Tarreauef1d1f82007-04-16 00:25:25 +0200622 /*
623 * Note: we could register external pollers here.
624 * Built-in pollers have been registered before main().
625 */
Willy Tarreau4f60f162007-04-08 16:39:58 +0200626
Willy Tarreau43b78992009-01-25 15:42:27 +0100627 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200628 disable_poller("kqueue");
629
Willy Tarreau43b78992009-01-25 15:42:27 +0100630 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200631 disable_poller("epoll");
632
Willy Tarreau43b78992009-01-25 15:42:27 +0100633 if (!(global.tune.options & GTUNE_USE_SEPOLL))
Willy Tarreaude99e992007-04-16 00:53:59 +0200634 disable_poller("sepoll");
635
Willy Tarreau43b78992009-01-25 15:42:27 +0100636 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200637 disable_poller("poll");
638
Willy Tarreau43b78992009-01-25 15:42:27 +0100639 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200640 disable_poller("select");
641
642 /* Note: we could disable any poller by name here */
643
Willy Tarreau2ff76222007-04-09 19:29:56 +0200644 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
645 list_pollers(stderr);
646
Willy Tarreau4f60f162007-04-08 16:39:58 +0200647 if (!init_pollers()) {
Willy Tarreau2ff76222007-04-09 19:29:56 +0200648 Alert("No polling mechanism available.\n");
Willy Tarreau4f60f162007-04-08 16:39:58 +0200649 exit(1);
650 }
Willy Tarreau2ff76222007-04-09 19:29:56 +0200651 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
652 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +0200653 }
654
Willy Tarreaubaaee002006-06-26 02:48:02 +0200655}
656
657void deinit(void)
658{
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200659 struct proxy *p = proxy, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200660 struct cap_hdr *h,*h_next;
661 struct server *s,*s_next;
662 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200663 struct acl_cond *cond, *condb;
664 struct hdr_exp *exp, *expb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200665 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200666 struct switching_rule *rule, *ruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200667 struct redirect_rule *rdr, *rdrb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200668 struct uri_auth *uap, *ua = NULL;
669 struct user_auth *user;
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200670 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200671
Willy Tarreaubaaee002006-06-26 02:48:02 +0200672 while (p) {
Willy Tarreaua534fea2008-08-03 12:19:50 +0200673 free(p->id);
674 free(p->check_req);
675 free(p->cookie_name);
676 free(p->cookie_domain);
677 free(p->url_param_name);
678 free(p->capture_name);
679 free(p->monitor_uri);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200680
Willy Tarreaua534fea2008-08-03 12:19:50 +0200681 for (i = 0; i < HTTP_ERR_SIZE; i++)
682 free(p->errmsg[i].str);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200683
Willy Tarreaua534fea2008-08-03 12:19:50 +0200684 for (i = 0; i < p->nb_reqadd; i++)
685 free(p->req_add[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200686
Willy Tarreaua534fea2008-08-03 12:19:50 +0200687 for (i = 0; i < p->nb_rspadd; i++)
688 free(p->rsp_add[i]);
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200689
690 list_for_each_entry_safe(cond, condb, &p->block_cond, list) {
691 LIST_DEL(&cond->list);
692 prune_acl_cond(cond);
693 free(cond);
694 }
695
Willy Tarreaub80c2302007-11-30 20:51:32 +0100696 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
697 LIST_DEL(&cond->list);
698 prune_acl_cond(cond);
699 free(cond);
700 }
701
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200702 for (exp = p->req_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200703 if (exp->preg) {
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200704 regfree((regex_t *)exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200705 free((regex_t *)exp->preg);
706 }
707
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200708 if (exp->replace && exp->action != ACT_SETBE)
709 free((char *)exp->replace);
710 expb = exp;
711 exp = exp->next;
712 free(expb);
713 }
714
715 for (exp = p->rsp_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200716 if (exp->preg) {
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200717 regfree((regex_t *)exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200718 free((regex_t *)exp->preg);
719 }
720
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200721 if (exp->replace && exp->action != ACT_SETBE)
722 free((char *)exp->replace);
723 expb = exp;
724 exp = exp->next;
725 free(expb);
726 }
727
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200728 /* build a list of unique uri_auths */
729 if (!ua)
730 ua = p->uri_auth;
731 else {
732 /* check if p->uri_auth is unique */
733 for (uap = ua; uap; uap=uap->next)
734 if (uap == p->uri_auth)
735 break;
736
Willy Tarreauaccc4e12008-06-24 11:14:45 +0200737 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200738 /* add it, if it is */
739 p->uri_auth->next = ua;
740 ua = p->uri_auth;
741 }
742 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200743
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200744 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
745 LIST_DEL(&acl->list);
746 prune_acl(acl);
747 free(acl);
748 }
749
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200750 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
751 LIST_DEL(&rule->list);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200752 prune_acl_cond(rule->cond);
753 free(rule->cond);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200754 free(rule);
755 }
756
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200757 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
758 LIST_DEL(&rdr->list);
759 prune_acl_cond(rdr->cond);
760 free(rdr->cond);
761 free(rdr->rdr_str);
762 free(rdr);
763 }
764
Willy Tarreaua534fea2008-08-03 12:19:50 +0200765 free(p->appsession_name);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200766
767 h = p->req_cap;
768 while (h) {
769 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +0200770 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200771 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200772 free(h);
773 h = h_next;
774 }/* end while(h) */
775
776 h = p->rsp_cap;
777 while (h) {
778 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +0200779 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200780 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200781 free(h);
782 h = h_next;
783 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200784
Willy Tarreaubaaee002006-06-26 02:48:02 +0200785 s = p->srv;
786 while (s) {
787 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200788
789 if (s->check) {
790 task_delete(s->check);
791 task_free(s->check);
792 }
793
Willy Tarreaua534fea2008-08-03 12:19:50 +0200794 free(s->id);
795 free(s->cookie);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200796 free(s);
797 s = s_next;
798 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200799
Willy Tarreaubaaee002006-06-26 02:48:02 +0200800 l = p->listen;
801 while (l) {
802 l_next = l->next;
803 free(l);
804 l = l_next;
805 }/* end while(l) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200806
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200807 pool_destroy2(p->req_cap_pool);
808 pool_destroy2(p->rsp_cap_pool);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200809 pool_destroy2(p->hdr_idx_pool);
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200810 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200811 p = p->next;
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200812 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200813 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +0200814
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200815 while (ua) {
816 uap = ua;
817 ua = ua->next;
818
Willy Tarreaua534fea2008-08-03 12:19:50 +0200819 free(uap->uri_prefix);
820 free(uap->auth_realm);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200821
822 while (uap->users) {
823 user = uap->users;
824 uap->users = uap->users->next;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200825 free(user->user_pwd);
826 free(user);
827 }
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200828 free(uap);
829 }
830
Willy Tarreaudd815982007-10-16 12:25:14 +0200831 protocol_unbind_all();
832
Willy Tarreaua534fea2008-08-03 12:19:50 +0200833 free(global.chroot); global.chroot = NULL;
834 free(global.pidfile); global.pidfile = NULL;
835 free(fdtab); fdtab = NULL;
836 free(oldpids); oldpids = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200837
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200838 pool_destroy2(pool2_session);
Willy Tarreau7341d942007-05-13 19:56:02 +0200839 pool_destroy2(pool2_buffer);
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200840 pool_destroy2(pool2_requri);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200841 pool_destroy2(pool2_task);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200842 pool_destroy2(pool2_capture);
Willy Tarreau63963c62007-05-13 21:29:55 +0200843 pool_destroy2(pool2_appsess);
Willy Tarreaue4d7e552007-05-13 20:19:55 +0200844 pool_destroy2(pool2_pendconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200845
846 if (have_appsession) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200847 pool_destroy2(apools.serverid);
848 pool_destroy2(apools.sessid);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200849 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200850
851 deinit_pollers();
852
Willy Tarreaubaaee002006-06-26 02:48:02 +0200853} /* end deinit() */
854
855/* sends the signal <sig> to all pids found in <oldpids> */
856static void tell_old_pids(int sig)
857{
858 int p;
859 for (p = 0; p < nb_oldpids; p++)
860 kill(oldpids[p], sig);
861}
862
Willy Tarreau4f60f162007-04-08 16:39:58 +0200863/*
864 * Runs the polling loop
865 *
866 * FIXME:
867 * - we still use 'listeners' to check whether we want to stop or not.
868 *
869 */
870void run_poll_loop()
871{
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200872 int next;
Willy Tarreau4f60f162007-04-08 16:39:58 +0200873
Willy Tarreaub0b37bc2008-06-23 14:00:57 +0200874 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +0200875 while (1) {
Willy Tarreau58b458d2008-06-29 22:40:23 +0200876 /* Check if we can expire some tasks */
877 wake_expired_tasks(&next);
878
879 /* Process a few tasks */
Willy Tarreaud825eef2007-05-12 22:35:00 +0200880 process_runnable_tasks(&next);
Willy Tarreau4f60f162007-04-08 16:39:58 +0200881
Willy Tarreau58b458d2008-06-29 22:40:23 +0200882 /* maintain all proxies in a consistent state. This should quickly
883 * become a task because it becomes expensive when there are huge
884 * numbers of proxies. */
885 maintain_proxies(&next);
886
Willy Tarreau4f60f162007-04-08 16:39:58 +0200887 /* stop when there's no connection left and we don't allow them anymore */
888 if (!actconn && listeners == 0)
889 break;
890
Willy Tarreau58b458d2008-06-29 22:40:23 +0200891 /* The poller will ensure it returns around <next> */
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200892 cur_poller.poll(&cur_poller, next);
Willy Tarreau4f60f162007-04-08 16:39:58 +0200893 }
894}
895
896
Willy Tarreaubaaee002006-06-26 02:48:02 +0200897int main(int argc, char **argv)
898{
899 int err, retry;
900 struct rlimit limit;
901 FILE *pidfile = NULL;
902 init(argc, argv);
903
904 signal(SIGQUIT, dump);
905 signal(SIGUSR1, sig_soft_stop);
906 signal(SIGHUP, sig_dump_state);
907#ifdef DEBUG_MEMORY
908 signal(SIGINT, sig_int);
909 signal(SIGTERM, sig_term);
910#endif
911
912 /* on very high loads, a sigpipe sometimes happen just between the
913 * getsockopt() which tells "it's OK to write", and the following write :-(
914 */
Willy Tarreau5bd8c372009-01-19 00:32:22 +0100915#if !defined(MSG_NOSIGNAL) || defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200916 signal(SIGPIPE, SIG_IGN);
917#endif
918
919 /* We will loop at most 100 times with 10 ms delay each time.
920 * That's at most 1 second. We only send a signal to old pids
921 * if we cannot grab at least one port.
922 */
923 retry = MAX_START_RETRIES;
924 err = ERR_NONE;
925 while (retry >= 0) {
926 struct timeval w;
927 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +0100928 /* exit the loop on no error or fatal error */
929 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200930 break;
931 if (nb_oldpids == 0)
932 break;
933
934 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
935 * listening sockets. So on those platforms, it would be wiser to
936 * simply send SIGUSR1, which will not be undoable.
937 */
938 tell_old_pids(SIGTTOU);
939 /* give some time to old processes to stop listening */
940 w.tv_sec = 0;
941 w.tv_usec = 10*1000;
942 select(0, NULL, NULL, NULL, &w);
943 retry--;
944 }
945
946 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +0100947 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200948 if (retry != MAX_START_RETRIES && nb_oldpids)
949 tell_old_pids(SIGTTIN);
950 exit(1);
951 }
952
953 if (listeners == 0) {
954 Alert("[%s.main()] No enabled listener found (check the <listen> keywords) ! Exiting.\n", argv[0]);
955 /* Note: we don't have to send anything to the old pids because we
956 * never stopped them. */
957 exit(1);
958 }
959
Willy Tarreau0a3b9d92009-02-04 17:05:23 +0100960 if ((protocol_bind_all() & ~ERR_WARN) != ERR_NONE) {
Willy Tarreaudd815982007-10-16 12:25:14 +0200961 Alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
962 protocol_unbind_all(); /* cleanup everything we can */
963 if (nb_oldpids)
964 tell_old_pids(SIGTTIN);
965 exit(1);
966 }
967
Willy Tarreaubaaee002006-06-26 02:48:02 +0200968 /* prepare pause/play signals */
969 signal(SIGTTOU, sig_pause);
970 signal(SIGTTIN, sig_listen);
971
Willy Tarreaubaaee002006-06-26 02:48:02 +0200972 /* MODE_QUIET can inhibit alerts and warnings below this line */
973
974 global.mode &= ~MODE_STARTING;
975 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
976 /* detach from the tty */
977 fclose(stdin); fclose(stdout); fclose(stderr);
978 close(0); close(1); close(2);
979 }
980
981 /* open log & pid files before the chroot */
982 if (global.mode & MODE_DAEMON && global.pidfile != NULL) {
983 int pidfd;
984 unlink(global.pidfile);
985 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
986 if (pidfd < 0) {
987 Alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
988 if (nb_oldpids)
989 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +0200990 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200991 exit(1);
992 }
993 pidfile = fdopen(pidfd, "w");
994 }
995
Willy Tarreaubaaee002006-06-26 02:48:02 +0200996 /* ulimits */
997 if (!global.rlimit_nofile)
998 global.rlimit_nofile = global.maxsock;
999
1000 if (global.rlimit_nofile) {
1001 limit.rlim_cur = limit.rlim_max = global.rlimit_nofile;
1002 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
1003 Warning("[%s.main()] Cannot raise FD limit to %d.\n", argv[0], global.rlimit_nofile);
1004 }
1005 }
1006
1007 if (global.rlimit_memmax) {
1008 limit.rlim_cur = limit.rlim_max =
1009 global.rlimit_memmax * 1048576 / global.nbproc;
1010#ifdef RLIMIT_AS
1011 if (setrlimit(RLIMIT_AS, &limit) == -1) {
1012 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
1013 argv[0], global.rlimit_memmax);
1014 }
1015#else
1016 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
1017 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
1018 argv[0], global.rlimit_memmax);
1019 }
1020#endif
1021 }
1022
Willy Tarreau6d1a9882007-01-07 02:03:04 +01001023#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001024 if ((global.tune.options & GTUNE_USE_SPLICE) && (global.last_checks & LSTCHK_TCPSPLICE)) {
Willy Tarreau6d1a9882007-01-07 02:03:04 +01001025 if (tcp_splice_start() < 0) {
1026 Alert("[%s.main()] Cannot enable tcp_splice.\n"
1027 " Make sure you have enough permissions and that the module is loadable.\n"
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001028 " Alternatively, you may disable the 'tcpsplice' options in the configuration\n"
1029 " or add 'nosplice' in the global section, or start with '-dS'.\n"
Willy Tarreau6d1a9882007-01-07 02:03:04 +01001030 "", argv[0], global.gid);
Willy Tarreaudd815982007-10-16 12:25:14 +02001031 protocol_unbind_all();
Willy Tarreau6d1a9882007-01-07 02:03:04 +01001032 exit(1);
1033 }
1034 }
1035#endif
1036
Willy Tarreaub38651a2007-03-24 17:24:39 +01001037#ifdef CONFIG_HAP_CTTPROXY
1038 if (global.last_checks & LSTCHK_CTTPROXY) {
1039 int ret;
1040
1041 ret = check_cttproxy_version();
1042 if (ret < 0) {
1043 Alert("[%s.main()] Cannot enable cttproxy.\n%s",
1044 argv[0],
1045 (ret == -1) ? " Incorrect module version.\n"
1046 : " Make sure you have enough permissions and that the module is loaded.\n");
Willy Tarreaudd815982007-10-16 12:25:14 +02001047 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01001048 exit(1);
1049 }
1050 }
1051#endif
1052
1053 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
1054 Alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
Willy Tarreau4e30ed72009-02-04 18:02:48 +01001055 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02001056 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01001057 exit(1);
1058 }
1059
Willy Tarreau4e30ed72009-02-04 18:02:48 +01001060 /* If the user is not root, we'll still let him try the configuration
1061 * but we inform him that unexpected behaviour may occur.
1062 */
1063 if ((global.last_checks & LSTCHK_NETADM) && getuid())
1064 Warning("[%s.main()] Some options which require full privileges"
1065 " might not work well.\n"
1066 "", argv[0]);
1067
Willy Tarreauf223cc02007-10-15 18:57:08 +02001068 /* chroot if needed */
1069 if (global.chroot != NULL) {
1070 if (chroot(global.chroot) == -1) {
1071 Alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
1072 if (nb_oldpids)
1073 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02001074 protocol_unbind_all();
Willy Tarreauf223cc02007-10-15 18:57:08 +02001075 exit(1);
1076 }
1077 chdir("/");
1078 }
1079
Willy Tarreaubaaee002006-06-26 02:48:02 +02001080 if (nb_oldpids)
1081 tell_old_pids(oldpids_sig);
1082
1083 /* Note that any error at this stage will be fatal because we will not
1084 * be able to restart the old pids.
1085 */
1086
1087 /* setgid / setuid */
1088 if (global.gid && setgid(global.gid) == -1) {
1089 Alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
Willy Tarreaudd815982007-10-16 12:25:14 +02001090 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001091 exit(1);
1092 }
1093
1094 if (global.uid && setuid(global.uid) == -1) {
1095 Alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Willy Tarreaudd815982007-10-16 12:25:14 +02001096 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001097 exit(1);
1098 }
1099
1100 /* check ulimits */
1101 limit.rlim_cur = limit.rlim_max = 0;
1102 getrlimit(RLIMIT_NOFILE, &limit);
1103 if (limit.rlim_cur < global.maxsock) {
1104 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",
1105 argv[0], limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
1106 }
1107
1108 if (global.mode & MODE_DAEMON) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01001109 struct proxy *px;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001110 int ret = 0;
1111 int proc;
1112
1113 /* the father launches the required number of processes */
1114 for (proc = 0; proc < global.nbproc; proc++) {
1115 ret = fork();
1116 if (ret < 0) {
1117 Alert("[%s.main()] Cannot fork.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02001118 protocol_unbind_all();
Willy Tarreaud6803712007-10-16 07:44:56 +02001119 exit(1); /* there has been an error */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001120 }
1121 else if (ret == 0) /* child breaks here */
1122 break;
1123 if (pidfile != NULL) {
1124 fprintf(pidfile, "%d\n", ret);
1125 fflush(pidfile);
1126 }
Willy Tarreaudcd47712007-11-04 23:35:08 +01001127 relative_pid++; /* each child will get a different one */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001128 }
1129 /* close the pidfile both in children and father */
1130 if (pidfile != NULL)
1131 fclose(pidfile);
1132 free(global.pidfile);
Krzysztof Oledzki56f1e8b2007-10-11 18:30:14 +02001133 global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001134
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01001135 /* we might have to unbind some proxies from some processes */
1136 px = proxy;
1137 while (px != NULL) {
1138 if (px->bind_proc && px->state != PR_STSTOPPED) {
1139 if (!(px->bind_proc & (1 << proc)))
1140 stop_proxy(px);
1141 }
1142 px = px->next;
1143 }
1144
Willy Tarreaubaaee002006-06-26 02:48:02 +02001145 if (proc == global.nbproc)
1146 exit(0); /* parent must leave */
1147
1148 /* if we're NOT in QUIET mode, we should now close the 3 first FDs to ensure
1149 * that we can detach from the TTY. We MUST NOT do it in other cases since
1150 * it would have already be done, and 0-2 would have been affected to listening
1151 * sockets
1152 */
Willy Tarreau106cb762008-11-16 07:40:34 +01001153 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02001154 /* detach from the tty */
1155 fclose(stdin); fclose(stdout); fclose(stderr);
1156 close(0); close(1); close(2); /* close all fd's */
Willy Tarreau106cb762008-11-16 07:40:34 +01001157 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001158 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
1159 }
1160 pid = getpid(); /* update child's pid */
1161 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02001162 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001163 }
1164
Willy Tarreaudd815982007-10-16 12:25:14 +02001165 protocol_enable_all();
Willy Tarreau4f60f162007-04-08 16:39:58 +02001166 /*
1167 * That's it : the central polling loop. Run until we stop.
1168 */
1169 run_poll_loop();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001170
1171 /* Free all Hash Keys and all Hash elements */
1172 appsession_cleanup();
1173 /* Do some cleanup */
1174 deinit();
1175
1176 exit(0);
1177}
1178
1179
1180/*
1181 * Local variables:
1182 * c-indent-level: 8
1183 * c-basic-offset: 8
1184 * End:
1185 */