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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau1a34d572014-02-03 00:41:29 +01003 * Copyright 2000-2014 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 *
Willy Tarreaubaaee002006-06-26 02:48:02 +020026 */
27
28#include <stdio.h>
29#include <stdlib.h>
30#include <unistd.h>
31#include <string.h>
32#include <ctype.h>
33#include <sys/time.h>
34#include <sys/types.h>
35#include <sys/socket.h>
36#include <netinet/tcp.h>
37#include <netinet/in.h>
38#include <arpa/inet.h>
39#include <netdb.h>
40#include <fcntl.h>
41#include <errno.h>
42#include <signal.h>
43#include <stdarg.h>
44#include <sys/resource.h>
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +010045#include <sys/wait.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020046#include <time.h>
47#include <syslog.h>
Michael Schererab012dd2013-01-12 18:35:19 +010048#include <grp.h>
Willy Tarreaufc6c0322012-11-16 16:12:27 +010049#ifdef USE_CPU_AFFINITY
50#define __USE_GNU
51#include <sched.h>
52#undef __USE_GNU
53#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020054
55#ifdef DEBUG_FULL
56#include <assert.h>
57#endif
58
Willy Tarreau2dd0d472006-06-29 17:53:05 +020059#include <common/appsession.h>
60#include <common/base64.h>
61#include <common/cfgparse.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020062#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020063#include <common/compat.h>
64#include <common/config.h>
65#include <common/defaults.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010066#include <common/errors.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020067#include <common/memory.h>
68#include <common/mini-clist.h>
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +010069#include <common/namespace.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020070#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>
Simon Hormanac821422011-07-15 13:14:09 +090078#include <types/proto_tcp.h>
79#include <types/acl.h>
Willy Tarreau3c63fd82011-09-07 18:00:47 +020080#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020081
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +010082#include <proto/auth.h>
Willy Tarreau0fc45a72007-06-17 00:36:03 +020083#include <proto/acl.h>
Willy Tarreau2e845be2012-10-19 19:49:09 +020084#include <proto/arg.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020085#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020086#include <proto/channel.h>
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +020087#include <proto/checks.h>
Willy Tarreauf2943dc2012-10-26 20:10:28 +020088#include <proto/connection.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020089#include <proto/fd.h>
Willy Tarreau34eb6712011-10-24 18:15:04 +020090#include <proto/hdr_idx.h>
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +010091#include <proto/hlua.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020092#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020093#include <proto/log.h>
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +010094#include <proto/pattern.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020095#include <proto/protocol.h>
Willy Tarreau80587432006-12-24 17:47:20 +010096#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020097#include <proto/proxy.h>
98#include <proto/queue.h>
99#include <proto/server.h>
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200100#include <proto/session.h>
Willy Tarreau29857942009-05-10 09:01:21 +0200101#include <proto/signal.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200102#include <proto/task.h>
103
Willy Tarreaub38651a2007-03-24 17:24:39 +0100104#ifdef CONFIG_HAP_CTTPROXY
105#include <proto/cttproxy.h>
106#endif
107
Emeric Brunfc0421f2012-09-07 17:30:07 +0200108#ifdef USE_OPENSSL
109#include <proto/ssl_sock.h>
110#endif
111
Willy Tarreaubaaee002006-06-26 02:48:02 +0200112/*********************************************************************/
113
Cyril Bonté6162c432012-11-10 19:27:47 +0100114extern const struct comp_algo comp_algos[];
115
Willy Tarreaubaaee002006-06-26 02:48:02 +0200116/*********************************************************************/
117
Willy Tarreau477ecd82010-01-03 21:12:30 +0100118/* list of config files */
119static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200120int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100121int relative_pid = 1; /* process id starting at 1 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200122
123/* global options */
124struct global global = {
Willy Tarreau247a13a2012-11-15 17:38:15 +0100125 .nbproc = 1,
William Lallemand5f232402012-04-05 18:02:55 +0200126 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200127 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
Willy Tarreau96aa6b32012-11-12 15:52:53 +0100128#ifdef DEFAULT_MAXZLIBMEM
Willy Tarreau5a940372012-12-03 12:10:45 +0100129 .maxzlibmem = DEFAULT_MAXZLIBMEM * 1024U * 1024U,
Willy Tarreau96aa6b32012-11-12 15:52:53 +0100130#else
William Lallemand9d5f5482012-11-07 16:12:57 +0100131 .maxzlibmem = 0,
Willy Tarreau96aa6b32012-11-12 15:52:53 +0100132#endif
William Lallemandd85f9172012-11-09 17:05:39 +0100133 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100134 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200135 .unix_bind = {
136 .ux = {
137 .uid = -1,
138 .gid = -1,
139 .mode = 0,
140 }
141 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200142 .tune = {
143 .bufsize = BUFSIZE,
144 .maxrewrite = MAXREWRITE,
Willy Tarreau43961d52010-10-04 20:39:20 +0200145 .chksize = BUFSIZE,
Willy Tarreaua24adf02014-11-27 01:11:56 +0100146 .reserved_bufs = RESERVED_BUFS,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200147#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100148 .sslcachesize = SSLCACHESIZE,
Remi Gacognef46cd6e2014-06-12 14:58:40 +0200149 .ssl_default_dh_param = SSL_DEFAULT_DH_PARAM,
Willy Tarreau03effc12014-02-12 14:55:41 +0100150#ifdef DEFAULT_SSL_MAX_RECORD
151 .ssl_max_record = DEFAULT_SSL_MAX_RECORD,
152#endif
Emeric Brunfc32aca2012-09-03 12:10:29 +0200153#endif
William Lallemanda509e4c2012-11-07 16:54:34 +0100154#ifdef USE_ZLIB
155 .zlibmemlevel = 8,
156 .zlibwindowsize = MAX_WBITS,
157#endif
William Lallemandf3747832012-11-09 12:33:10 +0100158 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100159#ifdef DEFAULT_IDLE_TIMER
160 .idle_timer = DEFAULT_IDLE_TIMER,
161#else
162 .idle_timer = 1000, /* 1 second */
163#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200164 },
Emeric Brun76d88952012-10-05 15:47:31 +0200165#ifdef USE_OPENSSL
166#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200167 .maxsslconn = DEFAULT_MAXSSLCONN,
168#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200169#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200170 /* others NULL OK */
171};
172
173/*********************************************************************/
174
175int stopping; /* non zero means stopping in progress */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200176int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200177
178/* Here we store informations about the pids of the processes we may pause
179 * or kill. We will send them a signal every 10 ms until we can bind to all
180 * our ports. With 200 retries, that's about 2 seconds.
181 */
182#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200183static int *oldpids = NULL;
184static int oldpids_sig; /* use USR1 or TERM */
185
186/* this is used to drain data, and as a temporary buffer for sprintf()... */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100187struct chunk trash = { };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200188
Willy Tarreau8096de92010-02-26 11:12:27 +0100189/* this buffer is always the same size as standard buffers and is used for
190 * swapping data inside a buffer.
191 */
192char *swap_buffer = NULL;
193
Willy Tarreaubb545b42010-08-25 12:58:59 +0200194int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200195const int zero = 0;
196const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200197const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200198
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100199char hostname[MAX_HOSTNAME_LEN];
Emeric Brun2b920a12010-09-23 18:30:22 +0200200char localpeer[MAX_HOSTNAME_LEN];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200201
Willy Tarreau89efaed2013-12-13 15:14:55 +0100202/* used from everywhere just to drain results we don't want to read and which
203 * recent versions of gcc increasingly and annoyingly complain about.
204 */
205int shut_your_big_mouth_gcc_int = 0;
206
Willy Tarreau08ceb102011-07-24 22:58:00 +0200207/* list of the temporarily limited listeners because of lack of resource */
208struct list global_listener_queue = LIST_HEAD_INIT(global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +0200209struct task *global_listener_queue_task;
210static struct task *manage_global_listener_queue(struct task *t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200211
Willy Tarreauff055502014-04-28 22:27:06 +0200212/* bitfield of a few warnings to emit just once (WARN_*) */
213unsigned int warned = 0;
214
Willy Tarreaubaaee002006-06-26 02:48:02 +0200215/*********************************************************************/
216/* general purpose functions ***************************************/
217/*********************************************************************/
218
219void display_version()
220{
221 printf("HA-Proxy version " HAPROXY_VERSION " " HAPROXY_DATE"\n");
Willy Tarreau1a34d572014-02-03 00:41:29 +0100222 printf("Copyright 2000-2014 Willy Tarreau <w@1wt.eu>\n\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200223}
224
Willy Tarreau7b066db2007-12-02 11:28:59 +0100225void display_build_opts()
226{
227 printf("Build options :"
228#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100229 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100230#endif
231#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100232 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100233#endif
234#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100235 "\n CC = " BUILD_CC
236#endif
237#ifdef BUILD_CFLAGS
238 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100239#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100240#ifdef BUILD_OPTIONS
241 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100242#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200243 "\n\nDefault settings :"
244 "\n maxconn = %d, bufsize = %d, maxrewrite = %d, maxpollevents = %d"
245 "\n\n",
246 DEFAULT_MAXCONN, BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200247
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100248 printf("Encrypted password support via crypt(3): "
249#ifdef CONFIG_HAP_CRYPT
250 "yes"
251#else
252 "no"
253#endif
254 "\n");
255
Cyril Bonté6162c432012-11-10 19:27:47 +0100256#ifdef USE_ZLIB
257 printf("Built with zlib version : " ZLIB_VERSION "\n");
258#else /* USE_ZLIB */
259 printf("Built without zlib support (USE_ZLIB not set)\n");
260#endif
261 printf("Compression algorithms supported :");
262 {
263 int i;
264
265 for (i = 0; comp_algos[i].name; i++) {
266 printf("%s %s", (i == 0 ? "" : ","), comp_algos[i].name);
267 }
268 if (i == 0) {
269 printf("none");
270 }
271 }
272 printf("\n");
273
Willy Tarreau1ee0e302012-09-10 07:16:05 +0200274#ifdef USE_OPENSSL
Lukas Tribus581cc8d2014-08-18 00:56:30 +0200275 printf("Built with OpenSSL version : "
276#ifdef OPENSSL_IS_BORINGSSL
277 "BoringSSL\n");
278#else /* OPENSSL_IS_BORINGSSL */
279 OPENSSL_VERSION_TEXT "\n");
Willy Tarreau0cff0db2013-04-26 18:16:13 +0200280 printf("Running on OpenSSL version : %s%s\n",
281 SSLeay_version(SSLEAY_VERSION),
282 ((OPENSSL_VERSION_NUMBER ^ SSLeay()) >> 8) ? " (VERSIONS DIFFER!)" : "");
Lukas Tribus581cc8d2014-08-18 00:56:30 +0200283#endif
Willy Tarreau1ee0e302012-09-10 07:16:05 +0200284 printf("OpenSSL library supports TLS extensions : "
285#if OPENSSL_VERSION_NUMBER < 0x00907000L
286 "no (library version too old)"
287#elif defined(OPENSSL_NO_TLSEXT)
288 "no (disabled via OPENSSL_NO_TLSEXT)"
289#else
290 "yes"
291#endif
292 "\n");
293 printf("OpenSSL library supports SNI : "
294#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
295 "yes"
296#else
297#ifdef OPENSSL_NO_TLSEXT
298 "no (because of OPENSSL_NO_TLSEXT)"
299#else
300 "no (version might be too old, 0.9.8f min needed)"
301#endif
302#endif
303 "\n");
304 printf("OpenSSL library supports prefer-server-ciphers : "
305#ifdef SSL_OP_CIPHER_SERVER_PREFERENCE
306 "yes"
307#else
308 "no (0.9.7 or later needed)"
309#endif
310 "\n");
311#else /* USE_OPENSSL */
312 printf("Built without OpenSSL support (USE_OPENSSL not set)\n");
313#endif
Lukas Tribusea68d362013-04-04 12:24:16 +0200314
315#ifdef USE_PCRE
316 printf("Built with PCRE version : %s", pcre_version());
Lukas Tribusd9bdccd2013-04-15 00:41:40 +0200317 printf("\nPCRE library supports JIT : ");
318#ifdef USE_PCRE_JIT
319 {
320 int r;
321 pcre_config(PCRE_CONFIG_JIT, &r);
322 if (r)
323 printf("yes");
324 else
325 printf("no (libpcre build without JIT?)");
326 }
Lukas Tribusea68d362013-04-04 12:24:16 +0200327#else
Lukas Tribusd9bdccd2013-04-15 00:41:40 +0200328 printf("no (USE_PCRE_JIT not set)");
Lukas Tribusea68d362013-04-04 12:24:16 +0200329#endif
Lukas Tribusd9bdccd2013-04-15 00:41:40 +0200330 printf("\n");
Lukas Tribusea68d362013-04-04 12:24:16 +0200331#else
332 printf("Built without PCRE support (using libc's regex instead)\n");
333#endif
334
Cyril Bonté47eb2192015-03-02 00:08:39 +0100335#ifdef USE_LUA
336 printf("Built with Lua version : %s\n", LUA_RELEASE);
337#else
338 printf("Built without Lua support\n");
339#endif
340
Pieter Baauwd551fb52013-05-08 22:49:23 +0200341#if defined(CONFIG_HAP_TRANSPARENT) || defined(CONFIG_HAP_CTTPROXY)
342 printf("Built with transparent proxy support using:"
343#if defined(CONFIG_HAP_CTTPROXY)
344 " CTTPROXY"
345#endif
346#if defined(IP_TRANSPARENT)
347 " IP_TRANSPARENT"
348#endif
349#if defined(IPV6_TRANSPARENT)
350 " IPV6_TRANSPARENT"
351#endif
352#if defined(IP_FREEBIND)
353 " IP_FREEBIND"
354#endif
Pieter Baauwff30b662013-05-08 23:22:39 +0200355#if defined(IP_BINDANY)
356 " IP_BINDANY"
357#endif
358#if defined(IPV6_BINDANY)
359 " IPV6_BINDANY"
360#endif
Pieter Baauw1eb75922013-05-08 23:30:23 +0200361#if defined(SO_BINDANY)
362 " SO_BINDANY"
363#endif
Pieter Baauwd551fb52013-05-08 22:49:23 +0200364 "\n");
365#endif
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +0100366
367#if defined(CONFIG_HAP_NS)
368 printf("Built with network namespace support\n");
369#endif
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100370 putchar('\n');
371
Willy Tarreaube5b6852009-10-03 18:57:08 +0200372 list_pollers(stdout);
373 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100374}
375
Willy Tarreaubaaee002006-06-26 02:48:02 +0200376/*
377 * This function prints the command line usage and exits
378 */
379void usage(char *name)
380{
381 display_version();
382 fprintf(stderr,
Willy Tarreau5d01a632009-06-22 16:02:30 +0200383 "Usage : %s [-f <cfgfile>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200384 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200385 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100386 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200387 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200388 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200389 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200390 " -D goes daemon ; -C changes to <dir> before loading files.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200391 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200392 " -c check mode : only check config files and exit\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200393 " -n sets the maximum total # of connections (%d)\n"
394 " -m limits the usable amount of memory (in MB)\n"
395 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200396 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200397 " -p writes pids of all children to this file\n"
398#if defined(ENABLE_EPOLL)
399 " -de disables epoll() usage even when available\n"
400#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200401#if defined(ENABLE_KQUEUE)
402 " -dk disables kqueue() usage even when available\n"
403#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200404#if defined(ENABLE_POLL)
405 " -dp disables poll() usage even when available\n"
406#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200407#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100408 " -dS disables splice usage (broken on old kernels)\n"
409#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200410#if defined(USE_GETADDRINFO)
411 " -dG disables getaddrinfo() usage\n"
412#endif
Emeric Brun850efd52014-01-29 12:24:34 +0100413 " -dV disables SSL verify on servers side\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200414 " -sf/-st [pid ]* finishes/terminates old pids. Must be last arguments.\n"
415 "\n",
416 name, DEFAULT_MAXCONN, cfg_maxpconn);
417 exit(1);
418}
419
420
421
422/*********************************************************************/
423/* more specific functions ***************************************/
424/*********************************************************************/
425
426/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200427 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
428 * a signal zero to all subscribers. This means that it's as easy as
429 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200430 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200431void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200432{
433 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200434 signal_unregister_handler(sh);
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200435 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200436}
437
438/*
439 * upon SIGTTOU, we pause everything
440 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200441void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200442{
443 pause_proxies();
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200444 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200445}
446
447/*
448 * upon SIGTTIN, let's have a soft stop.
449 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200450void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200451{
Willy Tarreaube58c382011-07-24 18:28:10 +0200452 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200453}
454
455/*
456 * this function dumps every server's state when the process receives SIGHUP.
457 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200458void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200459{
460 struct proxy *p = proxy;
461
462 Warning("SIGHUP received, dumping servers states.\n");
463 while (p) {
464 struct server *s = p->srv;
465
466 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
467 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100468 chunk_printf(&trash,
469 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
470 p->id, s->id,
Willy Tarreau892337c2014-05-13 23:41:20 +0200471 (s->state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100472 s->cur_sess, s->nbpend, s->counters.cum_sess);
473 Warning("%s\n", trash.str);
474 send_log(p, LOG_NOTICE, "%s\n", trash.str);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200475 s = s->next;
476 }
477
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200478 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
479 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100480 chunk_printf(&trash,
481 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
482 p->id,
483 p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200484 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100485 chunk_printf(&trash,
486 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
487 p->id,
488 (p->srv_bck) ? "is running on backup servers" : "has no server available",
489 p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200490 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100491 chunk_printf(&trash,
492 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
493 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
494 p->id, p->srv_act, p->srv_bck,
495 p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200496 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100497 Warning("%s\n", trash.str);
498 send_log(p, LOG_NOTICE, "%s\n", trash.str);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200499
500 p = p->next;
501 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200502}
503
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200504void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200505{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200506 /* dump memory usage then free everything possible */
507 dump_pools();
508 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200509}
510
Willy Tarreaubaaee002006-06-26 02:48:02 +0200511/*
512 * This function initializes all the necessary variables. It only returns
513 * if everything is OK. If something fails, it exits.
514 */
515void init(int argc, char **argv)
516{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200517 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200518 char *tmp;
519 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +0200520 int err_code = 0;
Willy Tarreau477ecd82010-01-03 21:12:30 +0100521 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +0000522 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +0200523 char *change_dir = NULL;
Yuxans Yao4e25b012012-10-19 10:36:09 +0800524 struct tm curtime;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200525
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100526 chunk_init(&trash, malloc(global.tune.bufsize), global.tune.bufsize);
Willy Tarreau2819e992013-12-13 14:41:10 +0100527 alloc_trash_buffers(global.tune.bufsize);
David du Colombier7af46052012-05-16 14:16:48 +0200528
Emeric Brun2b920a12010-09-23 18:30:22 +0200529 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
530 * the string in case of truncation, and at least FreeBSD appears not to do
531 * it.
532 */
533 memset(hostname, 0, sizeof(hostname));
534 gethostname(hostname, sizeof(hostname) - 1);
535 memset(localpeer, 0, sizeof(localpeer));
536 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
537
Willy Tarreaubaaee002006-06-26 02:48:02 +0200538 /*
539 * Initialize the previously static variables.
540 */
541
Willy Tarreau3eba98a2009-01-25 13:56:13 +0100542 totalconn = actconn = maxfd = listeners = stopping = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200543
544
545#ifdef HAPROXY_MEMMAX
546 global.rlimit_memmax = HAPROXY_MEMMAX;
547#endif
548
Willy Tarreaub0b37bc2008-06-23 14:00:57 +0200549 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200550 start_date = now;
551
Willy Tarreau84310e22014-02-14 11:59:04 +0100552 srandom(now_ms - getpid());
553
Yuxans Yao4e25b012012-10-19 10:36:09 +0800554 /* Get the numeric timezone. */
555 get_localtime(start_date.tv_sec, &curtime);
556 strftime(localtimezone, 6, "%z", &curtime);
557
Willy Tarreau29857942009-05-10 09:01:21 +0200558 signal_init();
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100559 if (init_acl() != 0)
560 exit(1);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200561 init_task();
562 init_session();
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200563 init_connection();
Willy Tarreau8280d642009-09-23 23:37:52 +0200564 /* warning, we init buffers later */
Willy Tarreaue4d7e552007-05-13 20:19:55 +0200565 init_pendconn();
Willy Tarreau80587432006-12-24 17:47:20 +0100566 init_proto_http();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200567
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +0100568 /* Initialise lua. */
569 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +0100570
Willy Tarreau43b78992009-01-25 15:42:27 +0100571 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200572#if defined(ENABLE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +0100573 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200574#endif
575#if defined(ENABLE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +0100576 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200577#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200578#if defined(ENABLE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +0100579 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200580#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200581#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100582 global.tune.options |= GTUNE_USE_SPLICE;
583#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200584#if defined(USE_GETADDRINFO)
585 global.tune.options |= GTUNE_USE_GAI;
586#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200587
588 pid = getpid();
589 progname = *argv;
590 while ((tmp = strchr(progname, '/')) != NULL)
591 progname = tmp + 1;
592
Kevinm48936af2010-12-22 16:08:21 +0000593 /* the process name is used for the logs only */
594 global.log_tag = strdup(progname);
595
Willy Tarreaubaaee002006-06-26 02:48:02 +0200596 argc--; argv++;
597 while (argc > 0) {
598 char *flag;
599
600 if (**argv == '-') {
601 flag = *argv+1;
602
603 /* 1 arg */
604 if (*flag == 'v') {
605 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +0100606 if (flag[1] == 'v') /* -vv */
607 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200608 exit(0);
609 }
610#if defined(ENABLE_EPOLL)
611 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +0100612 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200613#endif
614#if defined(ENABLE_POLL)
615 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +0100616 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200617#endif
Willy Tarreau69cad1a2007-04-10 22:45:11 +0200618#if defined(ENABLE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200619 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +0100620 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200621#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200622#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100623 else if (*flag == 'd' && flag[1] == 'S')
624 global.tune.options &= ~GTUNE_USE_SPLICE;
625#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200626#if defined(USE_GETADDRINFO)
627 else if (*flag == 'd' && flag[1] == 'G')
628 global.tune.options &= ~GTUNE_USE_GAI;
629#endif
Emeric Brun850efd52014-01-29 12:24:34 +0100630 else if (*flag == 'd' && flag[1] == 'V')
631 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200632 else if (*flag == 'V')
633 arg_mode |= MODE_VERBOSE;
634 else if (*flag == 'd' && flag[1] == 'b')
635 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +0200636 else if (*flag == 'd' && flag[1] == 'M')
637 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreaubaaee002006-06-26 02:48:02 +0200638 else if (*flag == 'd')
639 arg_mode |= MODE_DEBUG;
640 else if (*flag == 'c')
641 arg_mode |= MODE_CHECK;
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +0100642 else if (*flag == 'D') {
Willy Tarreau6bde87b2009-05-18 16:29:51 +0200643 arg_mode |= MODE_DAEMON;
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +0100644 if (flag[1] == 's') /* -Ds */
645 arg_mode |= MODE_SYSTEMD;
646 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200647 else if (*flag == 'q')
648 arg_mode |= MODE_QUIET;
649 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
650 /* list of pids to finish ('f') or terminate ('t') */
651
652 if (flag[1] == 'f')
653 oldpids_sig = SIGUSR1; /* finish then exit */
654 else
655 oldpids_sig = SIGTERM; /* terminate immediately */
656 argv++; argc--;
657
658 if (argc > 0) {
659 oldpids = calloc(argc, sizeof(int));
660 while (argc > 0) {
661 oldpids[nb_oldpids] = atol(*argv);
662 if (oldpids[nb_oldpids] <= 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200663 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200664 argc--; argv++;
665 nb_oldpids++;
666 }
667 }
668 }
669 else { /* >=2 args */
670 argv++; argc--;
671 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200672 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200673
674 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +0200675 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200676 case 'n' : cfg_maxconn = atol(*argv); break;
677 case 'm' : global.rlimit_memmax = atol(*argv); break;
678 case 'N' : cfg_maxpconn = atol(*argv); break;
Emeric Brun2b920a12010-09-23 18:30:22 +0200679 case 'L' : strncpy(localpeer, *argv, sizeof(localpeer) - 1); break;
Willy Tarreau5d01a632009-06-22 16:02:30 +0200680 case 'f' :
Willy Tarreau477ecd82010-01-03 21:12:30 +0100681 wl = (struct wordlist *)calloc(1, sizeof(*wl));
682 if (!wl) {
683 Alert("Cannot load configuration file %s : out of memory.\n", *argv);
Willy Tarreau5d01a632009-06-22 16:02:30 +0200684 exit(1);
685 }
Willy Tarreau477ecd82010-01-03 21:12:30 +0100686 wl->s = *argv;
687 LIST_ADDQ(&cfg_cfgfiles, &wl->list);
Willy Tarreau5d01a632009-06-22 16:02:30 +0200688 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200689 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200690 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200691 }
692 }
693 }
694 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200695 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200696 argv++; argc--;
697 }
698
699 global.mode = MODE_STARTING | /* during startup, we want most of the alerts */
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +0100700 (arg_mode & (MODE_DAEMON | MODE_SYSTEMD | MODE_FOREGROUND | MODE_VERBOSE
Willy Tarreaubaaee002006-06-26 02:48:02 +0200701 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
702
Willy Tarreau477ecd82010-01-03 21:12:30 +0100703 if (LIST_ISEMPTY(&cfg_cfgfiles))
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200704 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200705
Willy Tarreau576132e2011-09-10 19:26:56 +0200706 if (change_dir && chdir(change_dir) < 0) {
707 Alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
708 exit(1);
709 }
710
Willy Tarreaubaaee002006-06-26 02:48:02 +0200711 have_appsession = 0;
712 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200713
714 init_default_instance();
715
Willy Tarreau477ecd82010-01-03 21:12:30 +0100716 list_for_each_entry(wl, &cfg_cfgfiles, list) {
Willy Tarreauc4382422009-12-06 13:10:44 +0100717 int ret;
718
Willy Tarreau477ecd82010-01-03 21:12:30 +0100719 ret = readcfgfile(wl->s);
Willy Tarreauc4382422009-12-06 13:10:44 +0100720 if (ret == -1) {
721 Alert("Could not open configuration file %s : %s\n",
Willy Tarreau477ecd82010-01-03 21:12:30 +0100722 wl->s, strerror(errno));
Willy Tarreauc4382422009-12-06 13:10:44 +0100723 exit(1);
724 }
Willy Tarreau25a67fa2009-12-15 21:46:25 +0100725 if (ret & (ERR_ABORT|ERR_FATAL))
Willy Tarreau477ecd82010-01-03 21:12:30 +0100726 Alert("Error(s) found in configuration file : %s\n", wl->s);
Willy Tarreau25a67fa2009-12-15 21:46:25 +0100727 err_code |= ret;
Willy Tarreau058e9072009-07-20 09:30:05 +0200728 if (err_code & ERR_ABORT)
Willy Tarreau5d01a632009-06-22 16:02:30 +0200729 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200730 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +0200731
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +0100732 pattern_finalize_config();
733
Willy Tarreaubb925012009-07-23 13:36:36 +0200734 err_code |= check_config_validity();
735 if (err_code & (ERR_ABORT|ERR_FATAL)) {
736 Alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200737 exit(1);
738 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200739
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +0100740#ifdef CONFIG_HAP_NS
741 err_code |= netns_init();
742 if (err_code & (ERR_ABORT|ERR_FATAL)) {
743 Alert("Failed to initialize namespace support.\n");
744 exit(1);
745 }
746#endif
747
Willy Tarreaubaaee002006-06-26 02:48:02 +0200748 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +0100749 struct peers *pr;
750 struct proxy *px;
751
752 for (pr = peers; pr; pr = pr->next)
753 if (pr->peers_fe)
754 break;
755
756 for (px = proxy; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +0200757 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +0100758 break;
759
760 if (pr || px) {
761 /* At least one peer or one listener has been found */
762 qfprintf(stdout, "Configuration file is valid\n");
763 exit(0);
764 }
765 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
766 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200767 }
768
Willy Tarreaue9b26022011-08-01 20:57:55 +0200769 global_listener_queue_task = task_new();
770 if (!global_listener_queue_task) {
771 Alert("Out of memory when initializing global task\n");
772 exit(1);
773 }
774 /* very simple initialization, users will queue the task if needed */
775 global_listener_queue_task->context = NULL; /* not even a context! */
776 global_listener_queue_task->process = manage_global_listener_queue;
777 global_listener_queue_task->expire = TICK_ETERNITY;
778
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200779 /* now we know the buffer size, we can initialize the channels and buffers */
780 init_channel();
Willy Tarreau9b28e032012-10-12 23:49:43 +0200781 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +0200782
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200783 if (have_appsession)
784 appsession_init();
785
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +0200786 if (start_checks() < 0)
787 exit(1);
788
Willy Tarreaubaaee002006-06-26 02:48:02 +0200789 if (cfg_maxconn > 0)
790 global.maxconn = cfg_maxconn;
791
792 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +0200793 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200794 global.pidfile = strdup(cfg_pidfile);
795 }
796
Willy Tarreaud0256482015-01-15 21:45:22 +0100797 /* Now we want to compute the maxconn and possibly maxsslconn values.
798 * It's a bit tricky. If memmax is not set, maxconn defaults to
799 * DEFAULT_MAXCONN and maxsslconn defaults to DEFAULT_MAXSSLCONN.
800 *
801 * If memmax is set, then it depends on which values are set. If
802 * maxsslconn is set, we use memmax to determine how many cleartext
803 * connections may be added, and set maxconn to the sum of the two.
804 * If maxconn is set and not maxsslconn, maxsslconn is computed from
805 * the remaining amount of memory between memmax and the cleartext
806 * connections. If neither are set, then it is considered that all
807 * connections are SSL-capable, and maxconn is computed based on this,
808 * then maxsslconn accordingly. We need to know if SSL is used on the
809 * frontends, backends, or both, because when it's used on both sides,
810 * we need twice the value for maxsslconn, but we only count the
811 * handshake once since it is not performed on the two sides at the
812 * same time (frontend-side is terminated before backend-side begins).
813 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +0100814 * ssl_handshake_cost during its initialization. In any case, if
815 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
816 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +0100817 */
818 if (!global.rlimit_memmax) {
819 if (global.maxconn == 0) {
820 global.maxconn = DEFAULT_MAXCONN;
821 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
822 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
823 }
824 }
825#ifdef USE_OPENSSL
826 else if (!global.maxconn && !global.maxsslconn &&
827 (global.ssl_used_frontend || global.ssl_used_backend)) {
828 /* memmax is set, compute everything automatically. Here we want
829 * to ensure that all SSL connections will be served. We take
830 * care of the number of sides where SSL is used, and consider
831 * the worst case : SSL used on both sides and doing a handshake
832 * simultaneously. Note that we can't have more than maxconn
833 * handshakes at a time by definition, so for the worst case of
834 * two SSL conns per connection, we count a single handshake.
835 */
836 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
837 int64_t mem = global.rlimit_memmax * 1048576ULL;
838
839 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
840 mem -= global.maxzlibmem;
841 mem = mem * MEM_USABLE_RATIO;
842
843 global.maxconn = mem /
844 ((SESSION_MAX_COST + 2 * global.tune.bufsize) + // session + 2 buffers per session
845 sides * global.ssl_session_max_cost + // SSL buffers, one per side
846 global.ssl_handshake_max_cost); // 1 handshake per connection max
847
848 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +0100849#ifdef SYSTEM_MAXCONN
850 if (global.maxconn > DEFAULT_MAXCONN)
851 global.maxconn = DEFAULT_MAXCONN;
852#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +0100853 global.maxsslconn = sides * global.maxconn;
854 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
855 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
856 global.maxconn, global.maxsslconn);
857 }
858 else if (!global.maxsslconn &&
859 (global.ssl_used_frontend || global.ssl_used_backend)) {
860 /* memmax and maxconn are known, compute maxsslconn automatically.
861 * maxsslconn being forced, we don't know how many of it will be
862 * on each side if both sides are being used. The worst case is
863 * when all connections use only one SSL instance because
864 * handshakes may be on two sides at the same time.
865 */
866 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
867 int64_t mem = global.rlimit_memmax * 1048576ULL;
868 int64_t sslmem;
869
870 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
871 mem -= global.maxzlibmem;
872 mem = mem * MEM_USABLE_RATIO;
873
874 sslmem = mem - global.maxconn * (int64_t)(SESSION_MAX_COST + 2 * global.tune.bufsize);
875 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
876 global.maxsslconn = round_2dig(global.maxsslconn);
877
878 if (sslmem <= 0 || global.maxsslconn < sides) {
879 Alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
880 "high for the global.memmax value (%d MB). The absolute maximum possible value "
881 "without SSL is %d, but %d was found and SSL is in use.\n",
882 global.rlimit_memmax,
883 (int)(mem / (SESSION_MAX_COST + 2 * global.tune.bufsize)),
884 global.maxconn);
885 exit(1);
886 }
887
888 if (global.maxsslconn > sides * global.maxconn)
889 global.maxsslconn = sides * global.maxconn;
890
891 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
892 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
893 }
894#endif
895 else if (!global.maxconn) {
896 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
897 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
898 int64_t mem = global.rlimit_memmax * 1048576ULL;
899 int64_t clearmem;
900
901 if (global.ssl_used_frontend || global.ssl_used_backend)
902 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
903
904 mem -= global.maxzlibmem;
905 mem = mem * MEM_USABLE_RATIO;
906
907 clearmem = mem;
908 if (sides)
909 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
910
911 global.maxconn = clearmem / (SESSION_MAX_COST + 2 * global.tune.bufsize);
912 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +0100913#ifdef SYSTEM_MAXCONN
914 if (global.maxconn > DEFAULT_MAXCONN)
915 global.maxconn = DEFAULT_MAXCONN;
916#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +0100917
918 if (clearmem <= 0 || !global.maxconn) {
919 Alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
920 "high for the global.memmax value (%d MB). The absolute maximum possible value "
921 "is %d, but %d was found.\n",
922 global.rlimit_memmax,
923 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
924 global.maxsslconn);
925 exit(1);
926 }
927
928 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
929 if (sides && global.maxsslconn > sides * global.maxconn) {
930 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
931 "to be limited to %d. Better reduce global.maxsslconn to get more "
932 "room for extra connections.\n", global.maxsslconn, global.maxconn);
933 }
934 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
935 }
936 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200937
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100938 if (!global.maxpipes) {
939 /* maxpipes not specified. Count how many frontends and backends
940 * may be using splicing, and bound that to maxconn.
941 */
942 struct proxy *cur;
943 int nbfe = 0, nbbe = 0;
944
945 for (cur = proxy; cur; cur = cur->next) {
946 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
947 if (cur->cap & PR_CAP_FE)
948 nbfe += cur->maxconn;
949 if (cur->cap & PR_CAP_BE)
Willy Tarreauafb48762009-01-25 10:42:05 +0100950 nbbe += cur->fullconn ? cur->fullconn : global.maxconn;
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100951 }
952 }
953 global.maxpipes = MAX(nbfe, nbbe);
954 if (global.maxpipes > global.maxconn)
955 global.maxpipes = global.maxconn;
Willy Tarreau686ac822009-01-25 14:06:58 +0100956 global.maxpipes /= 4;
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100957 }
958
959
Willy Tarreauabacc2c2011-09-07 14:26:33 +0200960 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200961 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +0100962 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200963
Willy Tarreau3c63fd82011-09-07 18:00:47 +0200964 if (global.stats_fe)
965 global.maxsock += global.stats_fe->maxconn;
966
967 if (peers) {
968 /* peers also need to bypass global maxconn */
969 struct peers *p = peers;
970
971 for (p = peers; p; p = p->next)
972 if (p->peers_fe)
973 global.maxsock += p->peers_fe->maxconn;
974 }
975
Willy Tarreau1db37712007-06-03 17:16:49 +0200976 if (global.tune.maxpollevents <= 0)
977 global.tune.maxpollevents = MAX_POLL_EVENTS;
978
Willy Tarreau6f4a82c2009-03-21 20:43:57 +0100979 if (global.tune.recv_enough == 0)
980 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
981
Willy Tarreau27a674e2009-08-17 07:23:33 +0200982 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
983 global.tune.maxrewrite = global.tune.bufsize / 2;
984
Willy Tarreaubaaee002006-06-26 02:48:02 +0200985 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
986 /* command line debug mode inhibits configuration mode */
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +0100987 global.mode &= ~(MODE_DAEMON | MODE_SYSTEMD | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +0200988 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
989 }
990
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +0100991 if (arg_mode & (MODE_DAEMON | MODE_SYSTEMD)) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +0200992 /* command line daemon mode inhibits foreground and debug modes mode */
993 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +0100994 global.mode |= (arg_mode & (MODE_DAEMON | MODE_SYSTEMD));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200995 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +0200996
997 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200998
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +0100999 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_SYSTEMD | MODE_QUIET))) {
1000 Warning("<debug> mode incompatible with <quiet>, <daemon> and <systemd>. Keeping <debug> only.\n");
1001 global.mode &= ~(MODE_DAEMON | MODE_SYSTEMD | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001002 }
1003
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +01001004 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_SYSTEMD))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02001005 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
1006 Warning("<nbproc> is only meaningful in daemon mode. Setting limit to 1 process.\n");
1007 global.nbproc = 1;
1008 }
1009
1010 if (global.nbproc < 1)
1011 global.nbproc = 1;
1012
Willy Tarreau8096de92010-02-26 11:12:27 +01001013 swap_buffer = (char *)calloc(1, global.tune.bufsize);
Willy Tarreau7e2c6472012-10-29 20:44:36 +01001014 get_http_auth_buff = (char *)calloc(1, global.tune.bufsize);
Willy Tarreau07115412012-10-29 21:56:59 +01001015 static_table_key = calloc(1, sizeof(*static_table_key) + global.tune.bufsize);
Willy Tarreau8096de92010-02-26 11:12:27 +01001016
Willy Tarreau8d5d77e2009-10-18 07:25:52 +02001017 fdinfo = (struct fdinfo *)calloc(1,
1018 sizeof(struct fdinfo) * (global.maxsock));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001019 fdtab = (struct fdtab *)calloc(1,
1020 sizeof(struct fdtab) * (global.maxsock));
Willy Tarreauef1d1f82007-04-16 00:25:25 +02001021 /*
1022 * Note: we could register external pollers here.
1023 * Built-in pollers have been registered before main().
1024 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02001025
Willy Tarreau43b78992009-01-25 15:42:27 +01001026 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001027 disable_poller("kqueue");
1028
Willy Tarreau43b78992009-01-25 15:42:27 +01001029 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02001030 disable_poller("epoll");
1031
Willy Tarreau43b78992009-01-25 15:42:27 +01001032 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02001033 disable_poller("poll");
1034
Willy Tarreau43b78992009-01-25 15:42:27 +01001035 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02001036 disable_poller("select");
1037
1038 /* Note: we could disable any poller by name here */
1039
Willy Tarreau2ff76222007-04-09 19:29:56 +02001040 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1041 list_pollers(stderr);
1042
Willy Tarreau4f60f162007-04-08 16:39:58 +02001043 if (!init_pollers()) {
Willy Tarreau3fa87b12013-03-31 14:41:15 +02001044 Alert("No polling mechanism available.\n"
1045 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
1046 " is too low on this platform to support maxconn and the number of listeners\n"
1047 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
1048 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
Prach Pongpanichb837e682013-05-14 20:56:28 +02001049 " global maxconn setting to accommodate the system's limitation. For reference,\n"
Willy Tarreau3fa87b12013-03-31 14:41:15 +02001050 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
1051 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
1052 " check build settings using 'haproxy -vv'.\n\n",
1053 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001054 exit(1);
1055 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02001056 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
1057 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001058 }
1059
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02001060 if (!global.node)
1061 global.node = strdup(hostname);
1062
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01001063 if (!hlua_post_init())
1064 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001065}
1066
Simon Horman6fb82592011-07-15 13:14:11 +09001067static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09001068{
Simon Hormanac821422011-07-15 13:14:09 +09001069 struct acl_term_suite *suite, *suiteb;
1070 struct acl_term *term, *termb;
1071
Simon Horman6fb82592011-07-15 13:14:11 +09001072 if (!cond)
1073 return;
1074
1075 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
1076 list_for_each_entry_safe(term, termb, &suite->terms, list) {
1077 LIST_DEL(&term->list);
1078 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09001079 }
Simon Horman6fb82592011-07-15 13:14:11 +09001080 LIST_DEL(&suite->list);
1081 free(suite);
1082 }
1083
1084 free(cond);
1085}
1086
1087static void deinit_tcp_rules(struct list *rules)
1088{
1089 struct tcp_rule *trule, *truleb;
1090
1091 list_for_each_entry_safe(trule, truleb, rules, list) {
Simon Hormanac821422011-07-15 13:14:09 +09001092 LIST_DEL(&trule->list);
Simon Horman6fb82592011-07-15 13:14:11 +09001093 deinit_acl_cond(trule->cond);
Simon Hormanac821422011-07-15 13:14:09 +09001094 free(trule);
1095 }
1096}
1097
Willy Tarreau12785782012-04-27 21:37:17 +02001098static void deinit_sample_arg(struct arg *p)
Simon Horman6fb82592011-07-15 13:14:11 +09001099{
Willy Tarreauf9954102012-04-20 14:03:29 +02001100 struct arg *p_back = p;
1101
Simon Horman6fb82592011-07-15 13:14:11 +09001102 if (!p)
1103 return;
1104
Willy Tarreauf9954102012-04-20 14:03:29 +02001105 while (p->type != ARGT_STOP) {
Willy Tarreau496aa012012-06-01 10:38:29 +02001106 if (p->type == ARGT_STR || p->unresolved) {
Willy Tarreauf9954102012-04-20 14:03:29 +02001107 free(p->data.str.str);
1108 p->data.str.str = NULL;
Willy Tarreau496aa012012-06-01 10:38:29 +02001109 p->unresolved = 0;
Willy Tarreauecfb8e82012-04-20 12:29:52 +02001110 }
Willy Tarreau46947782015-01-19 19:00:58 +01001111 else if (p->type == ARGT_REG) {
1112 if (p->data.reg) {
1113 regex_free(p->data.reg);
1114 free(p->data.reg);
1115 p->data.reg = NULL;
1116 }
1117 }
Willy Tarreauf9954102012-04-20 14:03:29 +02001118 p++;
Willy Tarreauecfb8e82012-04-20 12:29:52 +02001119 }
Simon Horman6fb82592011-07-15 13:14:11 +09001120
Willy Tarreau2e845be2012-10-19 19:49:09 +02001121 if (p_back != empty_arg_list)
1122 free(p_back);
Simon Horman6fb82592011-07-15 13:14:11 +09001123}
1124
1125static void deinit_stick_rules(struct list *rules)
1126{
1127 struct sticking_rule *rule, *ruleb;
1128
1129 list_for_each_entry_safe(rule, ruleb, rules, list) {
1130 LIST_DEL(&rule->list);
1131 deinit_acl_cond(rule->cond);
1132 if (rule->expr) {
Willy Tarreau12785782012-04-27 21:37:17 +02001133 struct sample_conv_expr *conv_expr, *conv_exprb;
Simon Horman6fb82592011-07-15 13:14:11 +09001134 list_for_each_entry_safe(conv_expr, conv_exprb, &rule->expr->conv_exprs, list)
Willy Tarreau12785782012-04-27 21:37:17 +02001135 deinit_sample_arg(conv_expr->arg_p);
1136 deinit_sample_arg(rule->expr->arg_p);
Simon Horman6fb82592011-07-15 13:14:11 +09001137 free(rule->expr);
1138 }
1139 free(rule);
1140 }
1141}
1142
Willy Tarreaubaaee002006-06-26 02:48:02 +02001143void deinit(void)
1144{
Willy Tarreau4d2d0982007-05-14 00:39:29 +02001145 struct proxy *p = proxy, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001146 struct cap_hdr *h,*h_next;
1147 struct server *s,*s_next;
1148 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001149 struct acl_cond *cond, *condb;
1150 struct hdr_exp *exp, *expb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001151 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001152 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001153 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02001154 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01001155 struct wordlist *wl, *wlb;
Willy Tarreauf4f04122010-01-28 18:10:50 +01001156 struct cond_wordlist *cwl, *cwlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001157 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02001158 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01001159 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02001160 struct bind_conf *bind_conf, *bind_back;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001161 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001162
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001163 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001164 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02001165 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02001166 free(p->id);
1167 free(p->check_req);
1168 free(p->cookie_name);
1169 free(p->cookie_domain);
1170 free(p->url_param_name);
1171 free(p->capture_name);
1172 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09001173 free(p->rdp_cookie_name);
Willy Tarreau62a61232013-04-12 18:13:46 +02001174 if (p->conf.logformat_string != default_http_log_format &&
1175 p->conf.logformat_string != default_tcp_log_format &&
1176 p->conf.logformat_string != clf_http_log_format)
1177 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02001178
Willy Tarreau62a61232013-04-12 18:13:46 +02001179 free(p->conf.lfs_file);
1180 free(p->conf.uniqueid_format_string);
1181 free(p->conf.uif_file);
Godbachaf1a75d2013-10-02 17:10:11 +08001182 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001183
Willy Tarreaua534fea2008-08-03 12:19:50 +02001184 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +02001185 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001186
Willy Tarreauf4f04122010-01-28 18:10:50 +01001187 list_for_each_entry_safe(cwl, cwlb, &p->req_add, list) {
1188 LIST_DEL(&cwl->list);
1189 free(cwl->s);
1190 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01001191 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001192
Willy Tarreauf4f04122010-01-28 18:10:50 +01001193 list_for_each_entry_safe(cwl, cwlb, &p->rsp_add, list) {
1194 LIST_DEL(&cwl->list);
1195 free(cwl->s);
1196 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01001197 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001198
Willy Tarreau353bc9f2014-04-28 22:05:31 +02001199 list_for_each_entry_safe(cond, condb, &p->block_rules, list) {
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001200 LIST_DEL(&cond->list);
1201 prune_acl_cond(cond);
1202 free(cond);
1203 }
1204
Willy Tarreaub80c2302007-11-30 20:51:32 +01001205 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
1206 LIST_DEL(&cond->list);
1207 prune_acl_cond(cond);
1208 free(cond);
1209 }
1210
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001211 for (exp = p->req_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001212 if (exp->preg) {
Thierry FOURNIER09af0d62014-06-18 11:35:54 +02001213 regex_free(exp->preg);
1214 free(exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001215 }
1216
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001217 if (exp->replace && exp->action != ACT_SETBE)
1218 free((char *)exp->replace);
1219 expb = exp;
1220 exp = exp->next;
1221 free(expb);
1222 }
1223
1224 for (exp = p->rsp_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001225 if (exp->preg) {
Thierry FOURNIER09af0d62014-06-18 11:35:54 +02001226 regex_free(exp->preg);
1227 free(exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001228 }
1229
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001230 if (exp->replace && exp->action != ACT_SETBE)
1231 free((char *)exp->replace);
1232 expb = exp;
1233 exp = exp->next;
1234 free(expb);
1235 }
1236
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001237 /* build a list of unique uri_auths */
1238 if (!ua)
1239 ua = p->uri_auth;
1240 else {
1241 /* check if p->uri_auth is unique */
1242 for (uap = ua; uap; uap=uap->next)
1243 if (uap == p->uri_auth)
1244 break;
1245
Willy Tarreauaccc4e12008-06-24 11:14:45 +02001246 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001247 /* add it, if it is */
1248 p->uri_auth->next = ua;
1249 ua = p->uri_auth;
1250 }
1251 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001252
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001253 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
1254 LIST_DEL(&acl->list);
1255 prune_acl(acl);
1256 free(acl);
1257 }
1258
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001259 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
1260 LIST_DEL(&srule->list);
1261 prune_acl_cond(srule->cond);
1262 free(srule->cond);
1263 free(srule);
1264 }
1265
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001266 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
1267 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001268 if (rule->cond) {
1269 prune_acl_cond(rule->cond);
1270 free(rule->cond);
1271 }
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001272 free(rule);
1273 }
1274
Willy Tarreaub463dfb2008-06-07 23:08:56 +02001275 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
1276 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01001277 if (rdr->cond) {
1278 prune_acl_cond(rdr->cond);
1279 free(rdr->cond);
1280 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02001281 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01001282 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
1283 LIST_DEL(&lf->list);
1284 free(lf);
1285 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02001286 free(rdr);
1287 }
1288
William Lallemand0f99e342011-10-12 17:50:54 +02001289 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
1290 LIST_DEL(&log->list);
1291 free(log);
1292 }
1293
William Lallemand723b73a2012-02-08 16:37:49 +01001294 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
1295 LIST_DEL(&lf->list);
1296 free(lf);
1297 }
1298
Simon Hormanac821422011-07-15 13:14:09 +09001299 deinit_tcp_rules(&p->tcp_req.inspect_rules);
1300 deinit_tcp_rules(&p->tcp_req.l4_rules);
1301
Simon Horman6fb82592011-07-15 13:14:11 +09001302 deinit_stick_rules(&p->storersp_rules);
1303 deinit_stick_rules(&p->sticking_rules);
1304
Willy Tarreaua534fea2008-08-03 12:19:50 +02001305 free(p->appsession_name);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001306
1307 h = p->req_cap;
1308 while (h) {
1309 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02001310 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +02001311 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001312 free(h);
1313 h = h_next;
1314 }/* end while(h) */
1315
1316 h = p->rsp_cap;
1317 while (h) {
1318 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02001319 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +02001320 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001321 free(h);
1322 h = h_next;
1323 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001324
Willy Tarreaubaaee002006-06-26 02:48:02 +02001325 s = p->srv;
1326 while (s) {
1327 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001328
Willy Tarreau5b3a2022012-09-28 15:01:02 +02001329 if (s->check.task) {
1330 task_delete(s->check.task);
1331 task_free(s->check.task);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001332 }
Simon Hormand60d6912013-11-25 10:46:36 +09001333 if (s->agent.task) {
1334 task_delete(s->agent.task);
1335 task_free(s->agent.task);
1336 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001337
Willy Tarreau2e993902011-10-31 11:53:20 +01001338 if (s->warmup) {
1339 task_delete(s->warmup);
1340 task_free(s->warmup);
1341 }
1342
Willy Tarreaua534fea2008-08-03 12:19:50 +02001343 free(s->id);
1344 free(s->cookie);
Willy Tarreau1ae1b7b2012-09-28 15:28:30 +02001345 free(s->check.bi);
1346 free(s->check.bo);
Simon Hormand60d6912013-11-25 10:46:36 +09001347 free(s->agent.bi);
1348 free(s->agent.bo);
Sárközi, László34c01792014-09-05 10:08:23 +02001349 free((char*)s->conf.file);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001350 free(s);
1351 s = s_next;
1352 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001353
Willy Tarreau4348fad2012-09-20 16:48:07 +02001354 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02001355 unbind_listener(l);
1356 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02001357 LIST_DEL(&l->by_fe);
1358 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01001359 free(l->name);
1360 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001361 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02001362 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001363
Willy Tarreau4348fad2012-09-20 16:48:07 +02001364 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02001365 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
1366#ifdef USE_OPENSSL
1367 ssl_sock_free_all_ctx(bind_conf);
Emeric Brunfb510ea2012-10-05 12:00:26 +02001368 free(bind_conf->ca_file);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02001369 free(bind_conf->ciphers);
Emeric Brun2b58d042012-09-20 17:10:03 +02001370 free(bind_conf->ecdhe);
Emeric Brunfb510ea2012-10-05 12:00:26 +02001371 free(bind_conf->crl_file);
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02001372#endif /* USE_OPENSSL */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02001373 free(bind_conf->file);
1374 free(bind_conf->arg);
1375 LIST_DEL(&bind_conf->by_fe);
1376 free(bind_conf);
1377 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02001378
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01001379 free(p->desc);
1380 free(p->fwdfor_hdr_name);
1381
Willy Tarreauff011f22011-01-06 17:51:27 +01001382 free_http_req_rules(&p->http_req_rules);
Sasha Pachev218f0642014-06-16 12:05:59 -06001383 free_http_res_rules(&p->http_res_rules);
Willy Tarreau918ff602011-07-25 16:33:49 +02001384 free(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01001385
Willy Tarreaucf7f3202007-05-13 22:46:04 +02001386 pool_destroy2(p->req_cap_pool);
1387 pool_destroy2(p->rsp_cap_pool);
Simon Hormanb08584a2011-07-15 13:14:10 +09001388 pool_destroy2(p->table.pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01001389
Willy Tarreau4d2d0982007-05-14 00:39:29 +02001390 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001391 p = p->next;
Willy Tarreau4d2d0982007-05-14 00:39:29 +02001392 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001393 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02001394
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001395 while (ua) {
1396 uap = ua;
1397 ua = ua->next;
1398
Willy Tarreaua534fea2008-08-03 12:19:50 +02001399 free(uap->uri_prefix);
1400 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02001401 free(uap->node);
1402 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001403
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01001404 userlist_free(uap->userlist);
Willy Tarreauff011f22011-01-06 17:51:27 +01001405 free_http_req_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01001406
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001407 free(uap);
1408 }
1409
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01001410 userlist_free(userlist);
1411
Willy Tarreaudd815982007-10-16 12:25:14 +02001412 protocol_unbind_all();
1413
Joe Williamsdf5b38f2010-12-29 17:05:48 +01001414 free(global.log_send_hostname); global.log_send_hostname = NULL;
Kevinm48936af2010-12-22 16:08:21 +00001415 free(global.log_tag); global.log_tag = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02001416 free(global.chroot); global.chroot = NULL;
1417 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02001418 free(global.node); global.node = NULL;
1419 free(global.desc); global.desc = NULL;
Godbach4cc1b0d2013-06-26 16:49:51 +08001420 free(fdinfo); fdinfo = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02001421 free(fdtab); fdtab = NULL;
1422 free(oldpids); oldpids = NULL;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001423 free(global_listener_queue_task); global_listener_queue_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001424
William Lallemand0f99e342011-10-12 17:50:54 +02001425 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
1426 LIST_DEL(&log->list);
1427 free(log);
1428 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01001429 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1430 LIST_DEL(&wl->list);
1431 free(wl);
1432 }
1433
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001434 pool_destroy2(pool2_session);
Willy Tarreauf2943dc2012-10-26 20:10:28 +02001435 pool_destroy2(pool2_connection);
Willy Tarreau9b28e032012-10-12 23:49:43 +02001436 pool_destroy2(pool2_buffer);
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001437 pool_destroy2(pool2_channel);
Willy Tarreau332f8bf2007-05-13 21:36:56 +02001438 pool_destroy2(pool2_requri);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001439 pool_destroy2(pool2_task);
Willy Tarreau086b3b42007-05-13 21:45:51 +02001440 pool_destroy2(pool2_capture);
Willy Tarreau63963c62007-05-13 21:29:55 +02001441 pool_destroy2(pool2_appsess);
Willy Tarreaue4d7e552007-05-13 20:19:55 +02001442 pool_destroy2(pool2_pendconn);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001443 pool_destroy2(pool2_sig_handlers);
Willy Tarreau34eb6712011-10-24 18:15:04 +02001444 pool_destroy2(pool2_hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001445
1446 if (have_appsession) {
Willy Tarreau63963c62007-05-13 21:29:55 +02001447 pool_destroy2(apools.serverid);
1448 pool_destroy2(apools.sessid);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001449 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001450
1451 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001452} /* end deinit() */
1453
Willy Tarreaubb545b42010-08-25 12:58:59 +02001454/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
1455 * pids the signal was correctly delivered to.
1456 */
1457static int tell_old_pids(int sig)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001458{
1459 int p;
Willy Tarreaubb545b42010-08-25 12:58:59 +02001460 int ret = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001461 for (p = 0; p < nb_oldpids; p++)
Willy Tarreaubb545b42010-08-25 12:58:59 +02001462 if (kill(oldpids[p], sig) == 0)
1463 ret++;
1464 return ret;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001465}
1466
Willy Tarreau918ff602011-07-25 16:33:49 +02001467/* Runs the polling loop */
Willy Tarreau4f60f162007-04-08 16:39:58 +02001468void run_poll_loop()
1469{
Willy Tarreau0c303ee2008-07-07 00:09:58 +02001470 int next;
Willy Tarreau4f60f162007-04-08 16:39:58 +02001471
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001472 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001473 while (1) {
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01001474 /* Process a few tasks */
1475 process_runnable_tasks();
1476
Willy Tarreau29857942009-05-10 09:01:21 +02001477 /* check if we caught some signals and process them */
1478 signal_process_queue();
1479
Willy Tarreau58b458d2008-06-29 22:40:23 +02001480 /* Check if we can expire some tasks */
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01001481 next = wake_expired_tasks();
Willy Tarreau4f60f162007-04-08 16:39:58 +02001482
Willy Tarreauaf7ad002010-08-31 15:39:26 +02001483 /* stop when there's nothing left to do */
1484 if (jobs == 0)
Willy Tarreau4f60f162007-04-08 16:39:58 +02001485 break;
1486
Willy Tarreau58b458d2008-06-29 22:40:23 +02001487 /* The poller will ensure it returns around <next> */
Willy Tarreau0c303ee2008-07-07 00:09:58 +02001488 cur_poller.poll(&cur_poller, next);
Willy Tarreau033cd9d2014-01-25 19:24:15 +01001489 fd_process_cached_events();
Willy Tarreau4f60f162007-04-08 16:39:58 +02001490 }
1491}
1492
Willy Tarreaue9b26022011-08-01 20:57:55 +02001493/* This is the global management task for listeners. It enables listeners waiting
1494 * for global resources when there are enough free resource, or at least once in
1495 * a while. It is designed to be called as a task.
1496 */
1497static struct task *manage_global_listener_queue(struct task *t)
1498{
1499 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001500 /* queue is empty, nothing to do */
1501 if (LIST_ISEMPTY(&global_listener_queue))
1502 goto out;
1503
1504 /* If there are still too many concurrent connections, let's wait for
1505 * some of them to go away. We don't need to re-arm the timer because
1506 * each of them will scan the queue anyway.
1507 */
1508 if (unlikely(actconn >= global.maxconn))
1509 goto out;
1510
1511 /* We should periodically try to enable listeners waiting for a global
1512 * resource here, because it is possible, though very unlikely, that
1513 * they have been blocked by a temporary lack of global resource such
1514 * as a file descriptor or memory and that the temporary condition has
1515 * disappeared.
1516 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02001517 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02001518
1519 out:
1520 t->expire = next;
1521 task_queue(t);
1522 return t;
1523}
Willy Tarreau4f60f162007-04-08 16:39:58 +02001524
Willy Tarreaubaaee002006-06-26 02:48:02 +02001525int main(int argc, char **argv)
1526{
1527 int err, retry;
1528 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02001529 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02001530 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001531
Emeric Bruncf20bf12010-10-22 16:06:11 +02001532 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001533 signal_register_fct(SIGQUIT, dump, SIGQUIT);
1534 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
1535 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001536
Willy Tarreaue437c442010-03-17 18:02:46 +01001537 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
1538 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
1539 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02001540 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001541 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001542
Willy Tarreaudc23a922011-02-16 11:10:36 +01001543 /* ulimits */
1544 if (!global.rlimit_nofile)
1545 global.rlimit_nofile = global.maxsock;
1546
1547 if (global.rlimit_nofile) {
1548 limit.rlim_cur = limit.rlim_max = global.rlimit_nofile;
1549 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
1550 Warning("[%s.main()] Cannot raise FD limit to %d.\n", argv[0], global.rlimit_nofile);
1551 }
1552 }
1553
1554 if (global.rlimit_memmax) {
1555 limit.rlim_cur = limit.rlim_max =
1556 global.rlimit_memmax * 1048576 / global.nbproc;
1557#ifdef RLIMIT_AS
1558 if (setrlimit(RLIMIT_AS, &limit) == -1) {
1559 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
1560 argv[0], global.rlimit_memmax);
1561 }
1562#else
1563 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
1564 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
1565 argv[0], global.rlimit_memmax);
1566 }
1567#endif
1568 }
1569
Willy Tarreaubaaee002006-06-26 02:48:02 +02001570 /* We will loop at most 100 times with 10 ms delay each time.
1571 * That's at most 1 second. We only send a signal to old pids
1572 * if we cannot grab at least one port.
1573 */
1574 retry = MAX_START_RETRIES;
1575 err = ERR_NONE;
1576 while (retry >= 0) {
1577 struct timeval w;
1578 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01001579 /* exit the loop on no error or fatal error */
1580 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001581 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02001582 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001583 break;
1584
1585 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
1586 * listening sockets. So on those platforms, it would be wiser to
1587 * simply send SIGUSR1, which will not be undoable.
1588 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02001589 if (tell_old_pids(SIGTTOU) == 0) {
1590 /* no need to wait if we can't contact old pids */
1591 retry = 0;
1592 continue;
1593 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001594 /* give some time to old processes to stop listening */
1595 w.tv_sec = 0;
1596 w.tv_usec = 10*1000;
1597 select(0, NULL, NULL, NULL, &w);
1598 retry--;
1599 }
1600
1601 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01001602 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02001603 if (retry != MAX_START_RETRIES && nb_oldpids) {
1604 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001605 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02001606 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001607 exit(1);
1608 }
1609
1610 if (listeners == 0) {
1611 Alert("[%s.main()] No enabled listener found (check the <listen> keywords) ! Exiting.\n", argv[0]);
1612 /* Note: we don't have to send anything to the old pids because we
1613 * never stopped them. */
1614 exit(1);
1615 }
1616
Emeric Bruncf20bf12010-10-22 16:06:11 +02001617 err = protocol_bind_all(errmsg, sizeof(errmsg));
1618 if ((err & ~ERR_WARN) != ERR_NONE) {
1619 if ((err & ERR_ALERT) || (err & ERR_WARN))
1620 Alert("[%s.main()] %s.\n", argv[0], errmsg);
1621
Willy Tarreaudd815982007-10-16 12:25:14 +02001622 Alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
1623 protocol_unbind_all(); /* cleanup everything we can */
1624 if (nb_oldpids)
1625 tell_old_pids(SIGTTIN);
1626 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02001627 } else if (err & ERR_WARN) {
1628 Alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02001629 }
1630
Willy Tarreaubaaee002006-06-26 02:48:02 +02001631 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001632 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
1633 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001634
Willy Tarreaubaaee002006-06-26 02:48:02 +02001635 /* MODE_QUIET can inhibit alerts and warnings below this line */
1636
1637 global.mode &= ~MODE_STARTING;
1638 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
1639 /* detach from the tty */
1640 fclose(stdin); fclose(stdout); fclose(stderr);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001641 }
1642
1643 /* open log & pid files before the chroot */
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +01001644 if (global.mode & (MODE_DAEMON | MODE_SYSTEMD) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02001645 unlink(global.pidfile);
1646 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
1647 if (pidfd < 0) {
1648 Alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
1649 if (nb_oldpids)
1650 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02001651 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001652 exit(1);
1653 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001654 }
1655
Willy Tarreaub38651a2007-03-24 17:24:39 +01001656#ifdef CONFIG_HAP_CTTPROXY
1657 if (global.last_checks & LSTCHK_CTTPROXY) {
1658 int ret;
1659
1660 ret = check_cttproxy_version();
1661 if (ret < 0) {
1662 Alert("[%s.main()] Cannot enable cttproxy.\n%s",
1663 argv[0],
1664 (ret == -1) ? " Incorrect module version.\n"
1665 : " Make sure you have enough permissions and that the module is loaded.\n");
Willy Tarreaudd815982007-10-16 12:25:14 +02001666 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01001667 exit(1);
1668 }
1669 }
1670#endif
1671
1672 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
1673 Alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
Willy Tarreau4e30ed72009-02-04 18:02:48 +01001674 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02001675 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01001676 exit(1);
1677 }
1678
Willy Tarreau4e30ed72009-02-04 18:02:48 +01001679 /* If the user is not root, we'll still let him try the configuration
1680 * but we inform him that unexpected behaviour may occur.
1681 */
1682 if ((global.last_checks & LSTCHK_NETADM) && getuid())
1683 Warning("[%s.main()] Some options which require full privileges"
1684 " might not work well.\n"
1685 "", argv[0]);
1686
Willy Tarreauf223cc02007-10-15 18:57:08 +02001687 /* chroot if needed */
1688 if (global.chroot != NULL) {
Willy Tarreau21337822012-04-29 14:11:38 +02001689 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Willy Tarreauf223cc02007-10-15 18:57:08 +02001690 Alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
1691 if (nb_oldpids)
1692 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02001693 protocol_unbind_all();
Willy Tarreauf223cc02007-10-15 18:57:08 +02001694 exit(1);
1695 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02001696 }
1697
Willy Tarreaubaaee002006-06-26 02:48:02 +02001698 if (nb_oldpids)
Willy Tarreaubb545b42010-08-25 12:58:59 +02001699 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001700
1701 /* Note that any error at this stage will be fatal because we will not
1702 * be able to restart the old pids.
1703 */
1704
1705 /* setgid / setuid */
Michael Schererab012dd2013-01-12 18:35:19 +01001706 if (global.gid) {
1707 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
1708 Warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
1709 " without 'uid'/'user' is generally useless.\n", argv[0]);
1710
1711 if (setgid(global.gid) == -1) {
1712 Alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
1713 protocol_unbind_all();
1714 exit(1);
1715 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001716 }
1717
1718 if (global.uid && setuid(global.uid) == -1) {
1719 Alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Willy Tarreaudd815982007-10-16 12:25:14 +02001720 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001721 exit(1);
1722 }
1723
1724 /* check ulimits */
1725 limit.rlim_cur = limit.rlim_max = 0;
1726 getrlimit(RLIMIT_NOFILE, &limit);
1727 if (limit.rlim_cur < global.maxsock) {
1728 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 +02001729 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001730 }
1731
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +01001732 if (global.mode & (MODE_DAEMON | MODE_SYSTEMD)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01001733 struct proxy *px;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001734 int ret = 0;
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +01001735 int *children = calloc(global.nbproc, sizeof(int));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001736 int proc;
1737
1738 /* the father launches the required number of processes */
1739 for (proc = 0; proc < global.nbproc; proc++) {
1740 ret = fork();
1741 if (ret < 0) {
1742 Alert("[%s.main()] Cannot fork.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02001743 protocol_unbind_all();
Willy Tarreaud6803712007-10-16 07:44:56 +02001744 exit(1); /* there has been an error */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001745 }
1746 else if (ret == 0) /* child breaks here */
1747 break;
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +01001748 children[proc] = ret;
Willy Tarreau269ab312012-09-05 08:02:48 +02001749 if (pidfd >= 0) {
1750 char pidstr[100];
1751 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreau89efaed2013-12-13 15:14:55 +01001752 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001753 }
Willy Tarreaudcd47712007-11-04 23:35:08 +01001754 relative_pid++; /* each child will get a different one */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001755 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01001756
1757#ifdef USE_CPU_AFFINITY
1758 if (proc < global.nbproc && /* child */
1759 proc < 32 && /* only the first 32 processes may be pinned */
1760 global.cpu_map[proc]) /* only do this if the process has a CPU map */
1761 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map[proc]);
1762#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001763 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02001764 if (pidfd >= 0) {
1765 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
1766 close(pidfd);
1767 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02001768
1769 /* We won't ever use this anymore */
1770 free(oldpids); oldpids = NULL;
1771 free(global.chroot); global.chroot = NULL;
1772 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001773
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01001774 /* we might have to unbind some proxies from some processes */
1775 px = proxy;
1776 while (px != NULL) {
1777 if (px->bind_proc && px->state != PR_STSTOPPED) {
Willy Tarreaua9db57e2013-01-18 11:29:29 +01001778 if (!(px->bind_proc & (1UL << proc)))
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01001779 stop_proxy(px);
1780 }
1781 px = px->next;
1782 }
1783
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +01001784 if (proc == global.nbproc) {
1785 if (global.mode & MODE_SYSTEMD) {
Simone Gottib7f1cfc2014-06-11 00:15:51 +02001786 protocol_unbind_all();
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +01001787 for (proc = 0; proc < global.nbproc; proc++)
1788 while (waitpid(children[proc], NULL, 0) == -1 && errno == EINTR);
1789 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001790 exit(0); /* parent must leave */
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +01001791 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001792
Dirkjan Bussink07fcaaa2014-04-28 22:57:16 +00001793 free(children);
1794 children = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001795 /* if we're NOT in QUIET mode, we should now close the 3 first FDs to ensure
1796 * that we can detach from the TTY. We MUST NOT do it in other cases since
1797 * it would have already be done, and 0-2 would have been affected to listening
1798 * sockets
1799 */
Willy Tarreau106cb762008-11-16 07:40:34 +01001800 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02001801 /* detach from the tty */
1802 fclose(stdin); fclose(stdout); fclose(stderr);
Willy Tarreau106cb762008-11-16 07:40:34 +01001803 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001804 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
1805 }
1806 pid = getpid(); /* update child's pid */
1807 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02001808 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001809 }
1810
Willy Tarreaudd815982007-10-16 12:25:14 +02001811 protocol_enable_all();
Willy Tarreau4f60f162007-04-08 16:39:58 +02001812 /*
1813 * That's it : the central polling loop. Run until we stop.
1814 */
1815 run_poll_loop();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001816
1817 /* Free all Hash Keys and all Hash elements */
1818 appsession_cleanup();
1819 /* Do some cleanup */
1820 deinit();
1821
1822 exit(0);
1823}
1824
1825
1826/*
1827 * Local variables:
1828 * c-indent-level: 8
1829 * c-basic-offset: 8
1830 * End:
1831 */