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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau7b677262017-04-03 09:27:49 +02003 * Copyright 2000-2017 Willy Tarreau <willy@haproxy.org>.
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 *
Lukas Tribus23953682017-04-28 13:24:30 +000010 * Please refer to RFC7230 - RFC7235 informations about HTTP protocol, and
11 * RFC6265 for informations about cookies usage. More generally, the IETF HTTP
Willy Tarreaubaaee002006-06-26 02:48:02 +020012 * 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
David Carlier7ece0962015-12-08 21:43:09 +000028#define _GNU_SOURCE
Willy Tarreaubaaee002006-06-26 02:48:02 +020029#include <stdio.h>
30#include <stdlib.h>
31#include <unistd.h>
32#include <string.h>
33#include <ctype.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020034#include <dirent.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020035#include <sys/stat.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020036#include <sys/time.h>
37#include <sys/types.h>
38#include <sys/socket.h>
39#include <netinet/tcp.h>
40#include <netinet/in.h>
41#include <arpa/inet.h>
Olivier Houchardf73629d2017-04-05 22:33:04 +020042#include <net/if.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020043#include <netdb.h>
44#include <fcntl.h>
45#include <errno.h>
46#include <signal.h>
47#include <stdarg.h>
48#include <sys/resource.h>
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +010049#include <sys/wait.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020050#include <time.h>
51#include <syslog.h>
Michael Schererab012dd2013-01-12 18:35:19 +010052#include <grp.h>
Willy Tarreaufc6c0322012-11-16 16:12:27 +010053#ifdef USE_CPU_AFFINITY
Willy Tarreaufc6c0322012-11-16 16:12:27 +010054#include <sched.h>
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020055#ifdef __FreeBSD__
56#include <sys/param.h>
57#include <sys/cpuset.h>
58#endif
Willy Tarreaufc6c0322012-11-16 16:12:27 +010059#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020060
61#ifdef DEBUG_FULL
62#include <assert.h>
63#endif
64
Willy Tarreau2dd0d472006-06-29 17:53:05 +020065#include <common/base64.h>
66#include <common/cfgparse.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020067#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020068#include <common/compat.h>
69#include <common/config.h>
70#include <common/defaults.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010071#include <common/errors.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020072#include <common/memory.h>
73#include <common/mini-clist.h>
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +010074#include <common/namespace.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020075#include <common/regex.h>
76#include <common/standard.h>
77#include <common/time.h>
78#include <common/uri_auth.h>
79#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020080
81#include <types/capture.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020082#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020083#include <types/global.h>
Simon Hormanac821422011-07-15 13:14:09 +090084#include <types/acl.h>
Willy Tarreau3c63fd82011-09-07 18:00:47 +020085#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020086
Willy Tarreau0fc45a72007-06-17 00:36:03 +020087#include <proto/acl.h>
Willy Tarreau3c595ac2015-04-19 09:59:31 +020088#include <proto/applet.h>
Willy Tarreau2e845be2012-10-19 19:49:09 +020089#include <proto/arg.h>
Willy Tarreau3c595ac2015-04-19 09:59:31 +020090#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020091#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020092#include <proto/channel.h>
Willy Tarreauf2943dc2012-10-26 20:10:28 +020093#include <proto/connection.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020094#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020095#include <proto/filters.h>
Willy Tarreau34eb6712011-10-24 18:15:04 +020096#include <proto/hdr_idx.h>
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +010097#include <proto/hlua.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020098#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020099#include <proto/log.h>
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +0100100#include <proto/pattern.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200101#include <proto/protocol.h>
Willy Tarreau80587432006-12-24 17:47:20 +0100102#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200103#include <proto/proxy.h>
104#include <proto/queue.h>
105#include <proto/server.h>
Willy Tarreaub1ec8c42015-04-03 13:53:24 +0200106#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200107#include <proto/stream.h>
Willy Tarreau29857942009-05-10 09:01:21 +0200108#include <proto/signal.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200109#include <proto/task.h>
Baptiste Assmann325137d2015-04-13 23:40:55 +0200110#include <proto/dns.h>
Christopher Fauletff2613e2016-11-09 11:36:17 +0100111#include <proto/vars.h>
Grant Zhang872f9c22017-01-21 01:10:18 +0000112#include <proto/ssl_sock.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200113
Willy Tarreau477ecd82010-01-03 21:12:30 +0100114/* list of config files */
115static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200116int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100117int relative_pid = 1; /* process id starting at 1 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200118
119/* global options */
120struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100121 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100122 .nbproc = 1,
William Lallemand5f232402012-04-05 18:02:55 +0200123 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200124 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100125 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100126 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100127 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200128 .unix_bind = {
129 .ux = {
130 .uid = -1,
131 .gid = -1,
132 .mode = 0,
133 }
134 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200135 .tune = {
136 .bufsize = BUFSIZE,
Willy Tarreau27097842015-09-28 13:53:23 +0200137 .maxrewrite = -1,
Willy Tarreau43961d52010-10-04 20:39:20 +0200138 .chksize = BUFSIZE,
Willy Tarreaua24adf02014-11-27 01:11:56 +0100139 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200140 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200141#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100142 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200143#endif
William Lallemandf3747832012-11-09 12:33:10 +0100144 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100145#ifdef DEFAULT_IDLE_TIMER
146 .idle_timer = DEFAULT_IDLE_TIMER,
147#else
148 .idle_timer = 1000, /* 1 second */
149#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200150 },
Emeric Brun76d88952012-10-05 15:47:31 +0200151#ifdef USE_OPENSSL
152#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200153 .maxsslconn = DEFAULT_MAXSSLCONN,
154#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200155#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200156 /* others NULL OK */
157};
158
159/*********************************************************************/
160
161int stopping; /* non zero means stopping in progress */
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100162int killed; /* non zero means a hard-stop is triggered */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200163int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200164
165/* Here we store informations about the pids of the processes we may pause
166 * or kill. We will send them a signal every 10 ms until we can bind to all
167 * our ports. With 200 retries, that's about 2 seconds.
168 */
169#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200170static int *oldpids = NULL;
171static int oldpids_sig; /* use USR1 or TERM */
172
Olivier Houchardf73629d2017-04-05 22:33:04 +0200173/* Path to the unix socket we use to retrieve listener sockets from the old process */
174static const char *old_unixsocket;
175
William Lallemand85b0bd92017-06-01 17:38:53 +0200176static char *cur_unixsocket = NULL;
177
Willy Tarreaubaaee002006-06-26 02:48:02 +0200178/* this is used to drain data, and as a temporary buffer for sprintf()... */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100179struct chunk trash = { };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200180
Willy Tarreau8096de92010-02-26 11:12:27 +0100181/* this buffer is always the same size as standard buffers and is used for
182 * swapping data inside a buffer.
183 */
184char *swap_buffer = NULL;
185
William Lallemandcb11fd22017-06-01 17:38:52 +0200186int atexit_flag = 0;
187
Willy Tarreaubb545b42010-08-25 12:58:59 +0200188int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200189const int zero = 0;
190const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200191const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200192
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100193char hostname[MAX_HOSTNAME_LEN];
Emeric Brun2b920a12010-09-23 18:30:22 +0200194char localpeer[MAX_HOSTNAME_LEN];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200195
Willy Tarreau89efaed2013-12-13 15:14:55 +0100196/* used from everywhere just to drain results we don't want to read and which
197 * recent versions of gcc increasingly and annoyingly complain about.
198 */
199int shut_your_big_mouth_gcc_int = 0;
200
William Lallemand73b85e72017-06-01 17:38:51 +0200201int *children = NULL; /* store PIDs of children in master workers mode */
202
203static volatile sig_atomic_t caught_signal = 0;
204static char **next_argv = NULL;
205
William Lallemande20b6a62017-06-01 17:38:55 +0200206int mworker_pipe[2];
207
Willy Tarreau08ceb102011-07-24 22:58:00 +0200208/* list of the temporarily limited listeners because of lack of resource */
209struct list global_listener_queue = LIST_HEAD_INIT(global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +0200210struct task *global_listener_queue_task;
211static struct task *manage_global_listener_queue(struct task *t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200212
Willy Tarreauff055502014-04-28 22:27:06 +0200213/* bitfield of a few warnings to emit just once (WARN_*) */
214unsigned int warned = 0;
215
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100216
217/* These are strings to be reported in the output of "haproxy -vv". They may
218 * either be constants (in which case must_free must be zero) or dynamically
219 * allocated strings to pass to free() on exit, and in this case must_free
220 * must be non-zero.
221 */
222struct list build_opts_list = LIST_HEAD_INIT(build_opts_list);
223struct build_opts_str {
224 struct list list;
225 const char *str;
226 int must_free;
227};
228
Willy Tarreaue6945732016-12-21 19:57:00 +0100229/* These functions are called just after the point where the program exits
230 * after a config validity check, so they are generally suited for resource
231 * allocation and slow initializations that should be skipped during basic
232 * config checks. The functions must return 0 on success, or a combination
233 * of ERR_* flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause
234 * and immediate exit, so the function must have emitted any useful error.
235 */
236struct list post_check_list = LIST_HEAD_INIT(post_check_list);
237struct post_check_fct {
238 struct list list;
239 int (*fct)();
240};
241
Willy Tarreau05554e62016-12-21 20:46:26 +0100242/* These functions are called when freeing the global sections at the end
243 * of deinit, after everything is stopped. They don't return anything, and
244 * they work in best effort mode as their sole goal is to make valgrind
245 * mostly happy.
246 */
247struct list post_deinit_list = LIST_HEAD_INIT(post_deinit_list);
248struct post_deinit_fct {
249 struct list list;
250 void (*fct)();
251};
252
Willy Tarreaubaaee002006-06-26 02:48:02 +0200253/*********************************************************************/
254/* general purpose functions ***************************************/
255/*********************************************************************/
256
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100257/* used to register some build option strings at boot. Set must_free to
258 * non-zero if the string must be freed upon exit.
259 */
260void hap_register_build_opts(const char *str, int must_free)
261{
262 struct build_opts_str *b;
263
264 b = calloc(1, sizeof(*b));
265 if (!b) {
266 fprintf(stderr, "out of memory\n");
267 exit(1);
268 }
269 b->str = str;
270 b->must_free = must_free;
271 LIST_ADDQ(&build_opts_list, &b->list);
272}
273
Willy Tarreaue6945732016-12-21 19:57:00 +0100274/* used to register some initialization functions to call after the checks. */
275void hap_register_post_check(int (*fct)())
276{
277 struct post_check_fct *b;
278
279 b = calloc(1, sizeof(*b));
280 if (!b) {
281 fprintf(stderr, "out of memory\n");
282 exit(1);
283 }
284 b->fct = fct;
285 LIST_ADDQ(&post_check_list, &b->list);
286}
287
Willy Tarreau05554e62016-12-21 20:46:26 +0100288/* used to register some de-initialization functions to call after everything
289 * has stopped.
290 */
291void hap_register_post_deinit(void (*fct)())
292{
293 struct post_deinit_fct *b;
294
295 b = calloc(1, sizeof(*b));
296 if (!b) {
297 fprintf(stderr, "out of memory\n");
298 exit(1);
299 }
300 b->fct = fct;
301 LIST_ADDQ(&post_deinit_list, &b->list);
302}
303
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100304static void display_version()
Willy Tarreaubaaee002006-06-26 02:48:02 +0200305{
306 printf("HA-Proxy version " HAPROXY_VERSION " " HAPROXY_DATE"\n");
Willy Tarreau7b677262017-04-03 09:27:49 +0200307 printf("Copyright 2000-2017 Willy Tarreau <willy@haproxy.org>\n\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200308}
309
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100310static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100311{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100312 struct build_opts_str *item;
313
Willy Tarreau7b066db2007-12-02 11:28:59 +0100314 printf("Build options :"
315#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100316 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100317#endif
318#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100319 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100320#endif
321#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100322 "\n CC = " BUILD_CC
323#endif
324#ifdef BUILD_CFLAGS
325 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100326#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100327#ifdef BUILD_OPTIONS
328 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100329#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200330 "\n\nDefault settings :"
331 "\n maxconn = %d, bufsize = %d, maxrewrite = %d, maxpollevents = %d"
332 "\n\n",
333 DEFAULT_MAXCONN, BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200334
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100335 list_for_each_entry(item, &build_opts_list, list) {
336 puts(item->str);
337 }
338
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100339 putchar('\n');
340
Willy Tarreaube5b6852009-10-03 18:57:08 +0200341 list_pollers(stdout);
342 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100343 list_filters(stdout);
344 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100345}
346
Willy Tarreaubaaee002006-06-26 02:48:02 +0200347/*
348 * This function prints the command line usage and exits
349 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100350static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200351{
352 display_version();
353 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200354 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200355 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200356 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100357 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200358 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200359 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200360 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200361 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200362 " -W master-worker mode.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200363 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200364 " -c check mode : only check config files and exit\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200365 " -n sets the maximum total # of connections (%d)\n"
366 " -m limits the usable amount of memory (in MB)\n"
367 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200368 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200369 " -p writes pids of all children to this file\n"
370#if defined(ENABLE_EPOLL)
371 " -de disables epoll() usage even when available\n"
372#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200373#if defined(ENABLE_KQUEUE)
374 " -dk disables kqueue() usage even when available\n"
375#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200376#if defined(ENABLE_POLL)
377 " -dp disables poll() usage even when available\n"
378#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200379#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100380 " -dS disables splice usage (broken on old kernels)\n"
381#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200382#if defined(USE_GETADDRINFO)
383 " -dG disables getaddrinfo() usage\n"
384#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000385#if defined(SO_REUSEPORT)
386 " -dR disables SO_REUSEPORT usage\n"
387#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100388 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100389 " -dV disables SSL verify on servers side\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200390 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200391 " -x <unix_socket> get listening sockets from a unix socket\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200392 "\n",
393 name, DEFAULT_MAXCONN, cfg_maxpconn);
394 exit(1);
395}
396
397
398
399/*********************************************************************/
400/* more specific functions ***************************************/
401/*********************************************************************/
402
William Lallemand73b85e72017-06-01 17:38:51 +0200403/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
404 * pids the signal was correctly delivered to.
405 */
406static int tell_old_pids(int sig)
407{
408 int p;
409 int ret = 0;
410 for (p = 0; p < nb_oldpids; p++)
411 if (kill(oldpids[p], sig) == 0)
412 ret++;
413 return ret;
414}
415
416/* return 1 if a pid is a current child otherwise 0 */
417
418int current_child(int pid)
419{
420 int i;
421
422 for (i = 0; i < global.nbproc; i++) {
423 if (children[i] == pid)
424 return 1;
425 }
426 return 0;
427}
428
429static void mworker_signalhandler(int signum)
430{
431 caught_signal = signum;
432}
433
434static void mworker_register_signals()
435{
436 struct sigaction sa;
437 /* Here we are not using the haproxy async way
438 for signals because it does not exists in
439 the master */
440 memset(&sa, 0, sizeof(struct sigaction));
441 sa.sa_handler = &mworker_signalhandler;
442 sigaction(SIGHUP, &sa, NULL);
443 sigaction(SIGUSR1, &sa, NULL);
444 sigaction(SIGUSR2, &sa, NULL);
445 sigaction(SIGINT, &sa, NULL);
446 sigaction(SIGTERM, &sa, NULL);
447}
448
449static void mworker_block_signals()
450{
451 sigset_t set;
452
453 sigemptyset(&set);
454 sigaddset(&set, SIGUSR1);
455 sigaddset(&set, SIGUSR2);
456 sigaddset(&set, SIGHUP);
457 sigaddset(&set, SIGINT);
458 sigaddset(&set, SIGTERM);
459 sigprocmask(SIG_SETMASK, &set, NULL);
460}
461
462static void mworker_unblock_signals()
463{
464 sigset_t set;
465
466 sigemptyset(&set);
467 sigaddset(&set, SIGUSR1);
468 sigaddset(&set, SIGUSR2);
469 sigaddset(&set, SIGHUP);
470 sigaddset(&set, SIGINT);
471 sigaddset(&set, SIGTERM);
472 sigprocmask(SIG_UNBLOCK, &set, NULL);
473}
474
475static void mworker_unregister_signals()
476{
477 signal(SIGINT, SIG_DFL);
478 signal(SIGTERM, SIG_DFL);
479 signal(SIGHUP, SIG_IGN);
480 signal(SIGUSR1, SIG_IGN);
481 signal(SIGUSR2, SIG_IGN);
482}
483
484/*
485 * Send signal to every known children.
486 */
487
488static void mworker_kill(int sig)
489{
490 int i;
491
492 tell_old_pids(sig);
493 if (children) {
494 for (i = 0; i < global.nbproc; i++)
495 kill(children[i], sig);
496 }
497}
498
Willy Tarreaubaaee002006-06-26 02:48:02 +0200499/*
William Lallemand73b85e72017-06-01 17:38:51 +0200500 * remove a pid forom the olpid array and decrease nb_oldpids
501 * return 1 pid was found otherwise return 0
502 */
503
504int delete_oldpid(int pid)
505{
506 int i;
507
508 for (i = 0; i < nb_oldpids; i++) {
509 if (oldpids[i] == pid) {
510 oldpids[i] = oldpids[nb_oldpids - 1];
511 oldpids[nb_oldpids - 1] = 0;
512 nb_oldpids--;
513 return 1;
514 }
515 }
516 return 0;
517}
518
William Lallemand85b0bd92017-06-01 17:38:53 +0200519
520static void get_cur_unixsocket()
521{
522 /* if -x was used, try to update the stat socket if not available anymore */
523 if (global.stats_fe) {
524 struct bind_conf *bind_conf;
525
526 /* pass through all stats socket */
527 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
528 struct listener *l;
529
530 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
531
532 if (l->addr.ss_family == AF_UNIX &&
533 (bind_conf->level & ACCESS_FD_LISTENERS)) {
534 const struct sockaddr_un *un;
535
536 un = (struct sockaddr_un *)&l->addr;
537 /* priority to old_unixsocket */
538 if (!cur_unixsocket) {
539 cur_unixsocket = strdup(un->sun_path);
540 } else {
541 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
542 free(cur_unixsocket);
543 cur_unixsocket = strdup(old_unixsocket);
544 return;
545 }
546 }
547 }
548 }
549 }
550 }
551 if (!cur_unixsocket && old_unixsocket)
552 cur_unixsocket = strdup(old_unixsocket);
553}
554
William Lallemand73b85e72017-06-01 17:38:51 +0200555/*
556 * When called, this function reexec haproxy with -sf followed by current
557 * children PIDs and possibily old children PIDs if they didn't leave yet.
558 */
559static void mworker_reload()
560{
561 int next_argc = 0;
562 int j;
563 char *msg = NULL;
564
565 mworker_block_signals();
566 mworker_unregister_signals();
567 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
568
569 /* compute length */
570 while (next_argv[next_argc])
571 next_argc++;
572
William Lallemand85b0bd92017-06-01 17:38:53 +0200573 /* 1 for haproxy -sf, 2 for -x /socket */
574 next_argv = realloc(next_argv, (next_argc + 1 + 2 + global.nbproc + nb_oldpids + 1) * sizeof(char *));
William Lallemand73b85e72017-06-01 17:38:51 +0200575 if (next_argv == NULL)
576 goto alloc_error;
577
578
579 /* add -sf <PID>* to argv */
580 if (children || nb_oldpids > 0)
581 next_argv[next_argc++] = "-sf";
582 if (children) {
583 for (j = 0; j < global.nbproc; next_argc++,j++) {
584 next_argv[next_argc] = memprintf(&msg, "%d", children[j]);
585 if (next_argv[next_argc] == NULL)
586 goto alloc_error;
587 msg = NULL;
588 }
589 }
590 /* copy old process PIDs */
591 for (j = 0; j < nb_oldpids; next_argc++,j++) {
592 next_argv[next_argc] = memprintf(&msg, "%d", oldpids[j]);
593 if (next_argv[next_argc] == NULL)
594 goto alloc_error;
595 msg = NULL;
596 }
597 next_argv[next_argc] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200598
599 /* if -x was used, try to update the stat socket if not available anymore */
600 if (cur_unixsocket) {
601
602 if (old_unixsocket) {
603
604 /* look for -x <path> */
605 for (j = 0; next_argv[j]; j++) {
606 if (!strcmp(next_argv[j], "-x"))
607 next_argv[j + 1] = (char *)cur_unixsocket;
608 }
609 } else {
610 /* if -x is not specified but we know the socket, add -x with it */
611 next_argv[next_argc++] = "-x";
612 next_argv[next_argc++] = (char *)cur_unixsocket;
613 next_argv[next_argc++] = NULL;
614
615 }
616 }
617
William Lallemand73b85e72017-06-01 17:38:51 +0200618 deinit(); /* we don't want to leak FD there */
619 Warning("Reexecuting Master process\n");
620 execv(next_argv[0], next_argv);
621
622alloc_error:
623 Warning("Cannot allocate memory\n");
624 Warning("Failed to reexecute the master processs [%d]\n", pid);
625 return;
626}
627
628
629/*
630 * Wait for every children to exit
631 */
632
633static void mworker_wait()
634{
635 int exitpid = -1;
636 int status = 0;
637
638 mworker_register_signals();
639 mworker_unblock_signals();
640
641 while (1) {
642
643 while (((exitpid = wait(&status)) == -1) && errno == EINTR) {
644 int sig = caught_signal;
645 if (sig == SIGUSR2 || sig == SIGHUP) {
646 mworker_reload();
647 } else {
648 Warning("Exiting Master process...\n");
649 mworker_kill(sig);
650 mworker_unregister_signals();
651 }
652 caught_signal = 0;
653 }
654
655 if (exitpid == -1 && errno == ECHILD) {
656 Warning("All workers are left. Leaving... (%d)\n", status);
William Lallemandcb11fd22017-06-01 17:38:52 +0200657 atexit_flag = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200658 exit(status); /* parent must leave using the latest status code known */
659 }
660
661 if (WIFEXITED(status))
662 status = WEXITSTATUS(status);
663 else if (WIFSIGNALED(status))
664 status = 128 + WTERMSIG(status);
665 else if (WIFSTOPPED(status))
666 status = 128 + WSTOPSIG(status);
667 else
668 status = 255;
669
670 if (!children) {
671 Warning("Worker %d left with exit code %d\n", exitpid, status);
672 } else {
673 /* check if exited child was in the current children list */
674 if (current_child(exitpid)) {
675 Alert("Current worker %d left with exit code %d\n", exitpid, status);
William Lallemand69f9b3b2017-06-01 17:38:54 +0200676 if (status != 0 && status != 130 && status != 143
677 && global.tune.options & GTUNE_EXIT_ONFAILURE) {
678 Alert("exit-on-failure: killing every workers with SIGTERM\n");
679 mworker_kill(SIGTERM);
680 }
William Lallemand73b85e72017-06-01 17:38:51 +0200681 } else {
682 Warning("Former worker %d left with exit code %d\n", exitpid, status);
683 delete_oldpid(exitpid);
684 }
685 }
686 }
687}
688
William Lallemandcb11fd22017-06-01 17:38:52 +0200689
690/*
691 * Reexec the process in failure mode, instead of exiting
692 */
693void reexec_on_failure()
694{
695 if (!atexit_flag)
696 return;
697
698 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
699
700 Warning("Reexecuting Master process in waitpid mode\n");
701 mworker_reload();
702
703 Warning("Failed to reexecute the master processs\n");
704}
William Lallemand73b85e72017-06-01 17:38:51 +0200705
706
707/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200708 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
709 * a signal zero to all subscribers. This means that it's as easy as
710 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200711 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100712static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200713{
714 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200715 signal_unregister_handler(sh);
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200716 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200717}
718
719/*
720 * upon SIGTTOU, we pause everything
721 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100722static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200723{
724 pause_proxies();
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200725 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200726}
727
728/*
729 * upon SIGTTIN, let's have a soft stop.
730 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100731static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200732{
Willy Tarreaube58c382011-07-24 18:28:10 +0200733 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200734}
735
736/*
737 * this function dumps every server's state when the process receives SIGHUP.
738 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100739static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200740{
741 struct proxy *p = proxy;
742
743 Warning("SIGHUP received, dumping servers states.\n");
744 while (p) {
745 struct server *s = p->srv;
746
747 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
748 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100749 chunk_printf(&trash,
750 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
751 p->id, s->id,
Willy Tarreau892337c2014-05-13 23:41:20 +0200752 (s->state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100753 s->cur_sess, s->nbpend, s->counters.cum_sess);
754 Warning("%s\n", trash.str);
755 send_log(p, LOG_NOTICE, "%s\n", trash.str);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200756 s = s->next;
757 }
758
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200759 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
760 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100761 chunk_printf(&trash,
762 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
763 p->id,
764 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 +0200765 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100766 chunk_printf(&trash,
767 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
768 p->id,
769 (p->srv_bck) ? "is running on backup servers" : "has no server available",
770 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 +0200771 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100772 chunk_printf(&trash,
773 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
774 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
775 p->id, p->srv_act, p->srv_bck,
776 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 +0200777 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100778 Warning("%s\n", trash.str);
779 send_log(p, LOG_NOTICE, "%s\n", trash.str);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200780
781 p = p->next;
782 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200783}
784
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100785static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200786{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200787 /* dump memory usage then free everything possible */
788 dump_pools();
789 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200790}
791
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200792/* This function check if cfg_cfgfiles containes directories.
793 * If it find one, it add all the files (and only files) it containes
794 * in cfg_cfgfiles in place of the directory (and remove the directory).
795 * It add the files in lexical order.
796 * It add only files with .cfg extension.
797 * It doesn't add files with name starting with '.'
798 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100799static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200800{
801 struct wordlist *wl, *wlb;
802 char *err = NULL;
803
804 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
805 struct stat file_stat;
806 struct dirent **dir_entries = NULL;
807 int dir_entries_nb;
808 int dir_entries_it;
809
810 if (stat(wl->s, &file_stat)) {
811 Alert("Cannot open configuration file/directory %s : %s\n",
812 wl->s,
813 strerror(errno));
814 exit(1);
815 }
816
817 if (!S_ISDIR(file_stat.st_mode))
818 continue;
819
820 /* from this point wl->s is a directory */
821
822 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
823 if (dir_entries_nb < 0) {
824 Alert("Cannot open configuration directory %s : %s\n",
825 wl->s,
826 strerror(errno));
827 exit(1);
828 }
829
830 /* for each element in the directory wl->s */
831 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
832 struct dirent *dir_entry = dir_entries[dir_entries_it];
833 char *filename = NULL;
834 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
835
836 /* don't add filename that begin with .
837 * only add filename with .cfg extention
838 */
839 if (dir_entry->d_name[0] == '.' ||
840 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
841 goto next_dir_entry;
842
843 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
844 Alert("Cannot load configuration files %s : out of memory.\n",
845 filename);
846 exit(1);
847 }
848
849 if (stat(filename, &file_stat)) {
850 Alert("Cannot open configuration file %s : %s\n",
851 wl->s,
852 strerror(errno));
853 exit(1);
854 }
855
856 /* don't add anything else than regular file in cfg_cfgfiles
857 * this way we avoid loops
858 */
859 if (!S_ISREG(file_stat.st_mode))
860 goto next_dir_entry;
861
862 if (!list_append_word(&wl->list, filename, &err)) {
863 Alert("Cannot load configuration files %s : %s\n",
864 filename,
865 err);
866 exit(1);
867 }
868
869next_dir_entry:
870 free(filename);
871 free(dir_entry);
872 }
873
874 free(dir_entries);
875
876 /* remove the current directory (wl) from cfg_cfgfiles */
877 free(wl->s);
878 LIST_DEL(&wl->list);
879 free(wl);
880 }
881
882 free(err);
883}
884
Olivier Houchardf73629d2017-04-05 22:33:04 +0200885static int get_old_sockets(const char *unixsocket)
886{
887 char *cmsgbuf = NULL, *tmpbuf = NULL;
888 int *tmpfd = NULL;
889 struct sockaddr_un addr;
890 struct cmsghdr *cmsg;
891 struct msghdr msghdr;
892 struct iovec iov;
893 struct xfer_sock_list *xfer_sock = NULL;
Olivier Houchard54740872017-04-06 14:45:14 +0200894 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
Olivier Houchardf73629d2017-04-05 22:33:04 +0200895 int sock = -1;
896 int ret = -1;
897 int ret2 = -1;
898 int fd_nb;
899 int got_fd = 0;
900 int i = 0;
901 size_t maxoff = 0, curoff = 0;
902
903 memset(&msghdr, 0, sizeof(msghdr));
904 cmsgbuf = malloc(CMSG_SPACE(sizeof(int)) * MAX_SEND_FD);
905 if (!cmsgbuf) {
906 Warning("Failed to allocate memory to send sockets\n");
907 goto out;
908 }
909 sock = socket(PF_UNIX, SOCK_STREAM, 0);
910 if (sock < 0) {
911 Warning("Failed to connect to the old process socket '%s'\n",
912 unixsocket);
913 goto out;
914 }
915 strncpy(addr.sun_path, unixsocket, sizeof(addr.sun_path));
916 addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
917 addr.sun_family = PF_UNIX;
918 ret = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
919 if (ret < 0) {
920 Warning("Failed to connect to the old process socket '%s'\n",
921 unixsocket);
922 goto out;
923 }
Olivier Houchard54740872017-04-06 14:45:14 +0200924 setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv));
Olivier Houchardf73629d2017-04-05 22:33:04 +0200925 iov.iov_base = &fd_nb;
926 iov.iov_len = sizeof(fd_nb);
927 msghdr.msg_iov = &iov;
928 msghdr.msg_iovlen = 1;
929 send(sock, "_getsocks\n", strlen("_getsocks\n"), 0);
930 /* First, get the number of file descriptors to be received */
931 if (recvmsg(sock, &msghdr, MSG_WAITALL) != sizeof(fd_nb)) {
932 Warning("Failed to get the number of sockets to be transferred !\n");
933 goto out;
934 }
935 if (fd_nb == 0) {
936 ret = 0;
937 goto out;
938 }
939 tmpbuf = malloc(fd_nb * (1 + NAME_MAX + 1 + IFNAMSIZ + sizeof(int)));
940 if (tmpbuf == NULL) {
941 Warning("Failed to allocate memory while receiving sockets\n");
942 goto out;
943 }
944 tmpfd = malloc(fd_nb * sizeof(int));
945 if (tmpfd == NULL) {
946 Warning("Failed to allocate memory while receiving sockets\n");
947 goto out;
948 }
949 msghdr.msg_control = cmsgbuf;
950 msghdr.msg_controllen = CMSG_SPACE(sizeof(int)) * MAX_SEND_FD;
951 iov.iov_len = MAX_SEND_FD * (1 + NAME_MAX + 1 + IFNAMSIZ + sizeof(int));
952 do {
953 int ret3;
954
955 iov.iov_base = tmpbuf + curoff;
956 ret = recvmsg(sock, &msghdr, 0);
957 if (ret == -1 && errno == EINTR)
958 continue;
959 if (ret <= 0)
960 break;
961 /* Send an ack to let the sender know we got the sockets
962 * and it can send some more
963 */
964 do {
965 ret3 = send(sock, &got_fd, sizeof(got_fd), 0);
966 } while (ret3 == -1 && errno == EINTR);
967 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg != NULL;
968 cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
969 if (cmsg->cmsg_level == SOL_SOCKET &&
970 cmsg->cmsg_type == SCM_RIGHTS) {
971 size_t totlen = cmsg->cmsg_len -
972 CMSG_LEN(0);
973 if (totlen / sizeof(int) + got_fd > fd_nb) {
974 Warning("Got to many sockets !\n");
975 goto out;
976 }
977 /*
978 * Be paranoid and use memcpy() to avoid any
979 * potential alignement issue.
980 */
981 memcpy(&tmpfd[got_fd], CMSG_DATA(cmsg), totlen);
982 got_fd += totlen / sizeof(int);
983 }
984 }
985 curoff += ret;
986 } while (got_fd < fd_nb);
987
988 if (got_fd != fd_nb) {
989 Warning("We didn't get the expected number of sockets (expecting %d got %d)\n",
990 fd_nb, got_fd);
991 goto out;
992 }
993 maxoff = curoff;
994 curoff = 0;
995 for (i = 0; i < got_fd; i++) {
996 int fd = tmpfd[i];
997 socklen_t socklen;
998 int len;
999
1000 xfer_sock = calloc(1, sizeof(*xfer_sock));
1001 if (!xfer_sock) {
1002 Warning("Failed to allocate memory in get_old_sockets() !\n");
1003 break;
1004 }
1005 xfer_sock->fd = -1;
1006
1007 socklen = sizeof(xfer_sock->addr);
1008 if (getsockname(fd, (struct sockaddr *)&xfer_sock->addr, &socklen) != 0) {
1009 Warning("Failed to get socket address\n");
1010 free(xfer_sock);
1011 continue;
1012 }
1013 if (curoff >= maxoff) {
1014 Warning("Inconsistency while transferring sockets\n");
1015 goto out;
1016 }
1017 len = tmpbuf[curoff++];
1018 if (len > 0) {
1019 /* We have a namespace */
1020 if (curoff + len > maxoff) {
1021 Warning("Inconsistency while transferring sockets\n");
1022 goto out;
1023 }
1024 xfer_sock->namespace = malloc(len + 1);
1025 if (!xfer_sock->namespace) {
1026 Warning("Failed to allocate memory while transferring sockets\n");
1027 goto out;
1028 }
1029 memcpy(xfer_sock->namespace, &tmpbuf[curoff], len);
1030 xfer_sock->namespace[len] = 0;
1031 curoff += len;
1032 }
1033 if (curoff >= maxoff) {
1034 Warning("Inconsistency while transferring sockets\n");
1035 goto out;
1036 }
1037 len = tmpbuf[curoff++];
1038 if (len > 0) {
1039 /* We have an interface */
1040 if (curoff + len > maxoff) {
1041 Warning("Inconsistency while transferring sockets\n");
1042 goto out;
1043 }
1044 xfer_sock->iface = malloc(len + 1);
1045 if (!xfer_sock->iface) {
1046 Warning("Failed to allocate memory while transferring sockets\n");
1047 goto out;
1048 }
1049 memcpy(xfer_sock->iface, &tmpbuf[curoff], len);
1050 xfer_sock->namespace[len] = 0;
1051 curoff += len;
1052 }
1053 if (curoff + sizeof(int) > maxoff) {
1054 Warning("Inconsistency while transferring sockets\n");
1055 goto out;
1056 }
1057 memcpy(&xfer_sock->options, &tmpbuf[curoff],
1058 sizeof(xfer_sock->options));
1059 curoff += sizeof(xfer_sock->options);
1060
1061 xfer_sock->fd = fd;
1062 if (xfer_sock_list)
1063 xfer_sock_list->prev = xfer_sock;
1064 xfer_sock->next = xfer_sock_list;
1065 xfer_sock->prev = NULL;
1066 xfer_sock_list = xfer_sock;
1067 xfer_sock = NULL;
1068 }
1069
1070 ret2 = 0;
1071out:
1072 /* If we failed midway make sure to close the remaining
1073 * file descriptors
1074 */
1075 if (tmpfd != NULL && i < got_fd) {
1076 for (; i < got_fd; i++) {
1077 close(tmpfd[i]);
1078 }
1079 }
1080 free(tmpbuf);
1081 free(tmpfd);
1082 free(cmsgbuf);
1083 if (sock != -1)
1084 close(sock);
1085 if (xfer_sock) {
1086 free(xfer_sock->namespace);
1087 free(xfer_sock->iface);
1088 if (xfer_sock->fd != -1)
1089 close(xfer_sock->fd);
1090 free(xfer_sock);
1091 }
1092 return (ret2);
1093}
1094
Willy Tarreaubaaee002006-06-26 02:48:02 +02001095/*
William Lallemand73b85e72017-06-01 17:38:51 +02001096 * copy and cleanup the current argv
1097 * Remove the -sf /-st parameters
1098 * Return an allocated copy of argv
1099 */
1100
1101static char **copy_argv(int argc, char **argv)
1102{
1103 char **newargv;
1104 int i, j;
1105
1106 newargv = calloc(argc + 2, sizeof(char *));
1107 if (newargv == NULL) {
1108 Warning("Cannot allocate memory\n");
1109 return NULL;
1110 }
1111
1112 for (i = 0, j = 0; i < argc; i++, j++) {
1113 char *flag = *(argv + i) + 1;
1114
1115 /* -sf or -st */
1116 if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1117 /* list of pids to finish ('f') or terminate ('t') */
1118 i++;
1119 while (i < argc && argv[i][0] != '-') {
1120 i++;
1121 }
1122 }
1123 newargv[j] = argv[i];
1124 }
1125 return newargv;
1126}
1127
1128/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001129 * This function initializes all the necessary variables. It only returns
1130 * if everything is OK. If something fails, it exits.
1131 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001132static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001133{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001134 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001135 char *tmp;
1136 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001137 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001138 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001139 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001140 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001141 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001142 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001143 struct post_check_fct *pcf;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001144
William Lallemand73b85e72017-06-01 17:38:51 +02001145 next_argv = copy_argv(argc, argv);
1146
Willy Tarreau19d14ef2012-10-29 16:51:55 +01001147 chunk_init(&trash, malloc(global.tune.bufsize), global.tune.bufsize);
Willy Tarreau2819e992013-12-13 14:41:10 +01001148 alloc_trash_buffers(global.tune.bufsize);
David du Colombier7af46052012-05-16 14:16:48 +02001149
Emeric Brun2b920a12010-09-23 18:30:22 +02001150 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1151 * the string in case of truncation, and at least FreeBSD appears not to do
1152 * it.
1153 */
1154 memset(hostname, 0, sizeof(hostname));
1155 gethostname(hostname, sizeof(hostname) - 1);
1156 memset(localpeer, 0, sizeof(localpeer));
1157 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
1158
Willy Tarreaubaaee002006-06-26 02:48:02 +02001159 /*
1160 * Initialize the previously static variables.
1161 */
1162
Willy Tarreau3eba98a2009-01-25 13:56:13 +01001163 totalconn = actconn = maxfd = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001164 killed = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001165
1166
1167#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001168 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001169#endif
1170
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001171 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001172 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001173 start_date = now;
1174
Willy Tarreau84310e22014-02-14 11:59:04 +01001175 srandom(now_ms - getpid());
1176
Dragan Dosen835b9212016-02-12 13:23:03 +01001177 init_log();
Willy Tarreau29857942009-05-10 09:01:21 +02001178 signal_init();
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001179 if (init_acl() != 0)
1180 exit(1);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001181 init_task();
Willy Tarreau87b09662015-04-03 00:22:06 +02001182 init_stream();
Willy Tarreaub1ec8c42015-04-03 13:53:24 +02001183 init_session();
Willy Tarreauf2943dc2012-10-26 20:10:28 +02001184 init_connection();
Willy Tarreau8280d642009-09-23 23:37:52 +02001185 /* warning, we init buffers later */
Willy Tarreaue4d7e552007-05-13 20:19:55 +02001186 init_pendconn();
Willy Tarreau80587432006-12-24 17:47:20 +01001187 init_proto_http();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001188
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001189 /* Initialise lua. */
1190 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001191
Christopher Fauletff2613e2016-11-09 11:36:17 +01001192 /* Initialize process vars */
1193 vars_init(&global.vars, SCOPE_PROC);
1194
Willy Tarreau43b78992009-01-25 15:42:27 +01001195 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001196#if defined(ENABLE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001197 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001198#endif
1199#if defined(ENABLE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001200 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001201#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001202#if defined(ENABLE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001203 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001204#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +02001205#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001206 global.tune.options |= GTUNE_USE_SPLICE;
1207#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001208#if defined(USE_GETADDRINFO)
1209 global.tune.options |= GTUNE_USE_GAI;
1210#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001211#if defined(SO_REUSEPORT)
1212 global.tune.options |= GTUNE_USE_REUSEPORT;
1213#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001214
1215 pid = getpid();
1216 progname = *argv;
1217 while ((tmp = strchr(progname, '/')) != NULL)
1218 progname = tmp + 1;
1219
Kevinm48936af2010-12-22 16:08:21 +00001220 /* the process name is used for the logs only */
Dragan Dosen43885c72015-10-01 13:18:13 +02001221 chunk_initstr(&global.log_tag, strdup(progname));
Kevinm48936af2010-12-22 16:08:21 +00001222
Willy Tarreaubaaee002006-06-26 02:48:02 +02001223 argc--; argv++;
1224 while (argc > 0) {
1225 char *flag;
1226
1227 if (**argv == '-') {
1228 flag = *argv+1;
1229
1230 /* 1 arg */
1231 if (*flag == 'v') {
1232 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001233 if (flag[1] == 'v') /* -vv */
1234 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001235 exit(0);
1236 }
1237#if defined(ENABLE_EPOLL)
1238 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001239 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001240#endif
1241#if defined(ENABLE_POLL)
1242 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001243 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001244#endif
Willy Tarreau69cad1a2007-04-10 22:45:11 +02001245#if defined(ENABLE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001246 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001247 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001248#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +02001249#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001250 else if (*flag == 'd' && flag[1] == 'S')
1251 global.tune.options &= ~GTUNE_USE_SPLICE;
1252#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001253#if defined(USE_GETADDRINFO)
1254 else if (*flag == 'd' && flag[1] == 'G')
1255 global.tune.options &= ~GTUNE_USE_GAI;
1256#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001257#if defined(SO_REUSEPORT)
1258 else if (*flag == 'd' && flag[1] == 'R')
1259 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1260#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001261 else if (*flag == 'd' && flag[1] == 'V')
1262 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001263 else if (*flag == 'V')
1264 arg_mode |= MODE_VERBOSE;
1265 else if (*flag == 'd' && flag[1] == 'b')
1266 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +02001267 else if (*flag == 'd' && flag[1] == 'M')
1268 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001269 else if (*flag == 'd' && flag[1] == 'r')
1270 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001271 else if (*flag == 'd')
1272 arg_mode |= MODE_DEBUG;
1273 else if (*flag == 'c')
1274 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001275 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001276 arg_mode |= MODE_DAEMON;
William Lallemand095ba4c2017-06-01 17:38:50 +02001277 else if (*flag == 'W')
1278 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001279 else if (*flag == 'q')
1280 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001281 else if (*flag == 'x') {
William Lallemand45eff442017-06-19 15:57:55 +02001282 if (argc <= 1 || argv[1][0] == '-') {
1283 Alert("Unix socket path expected with the -x flag\n\n");
1284 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001285 }
1286 old_unixsocket = argv[1];
1287 argv++;
1288 argc--;
1289 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001290 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1291 /* list of pids to finish ('f') or terminate ('t') */
1292
1293 if (flag[1] == 'f')
1294 oldpids_sig = SIGUSR1; /* finish then exit */
1295 else
1296 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001297 while (argc > 1 && argv[1][0] != '-') {
1298 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1299 if (!oldpids) {
1300 Alert("Cannot allocate old pid : out of memory.\n");
1301 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001302 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001303 argc--; argv++;
1304 oldpids[nb_oldpids] = atol(*argv);
1305 if (oldpids[nb_oldpids] <= 0)
1306 usage(progname);
1307 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001308 }
1309 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001310 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1311 /* now that's a cfgfile list */
1312 argv++; argc--;
1313 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001314 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
1315 Alert("Cannot load configuration file/directory %s : %s\n",
1316 *argv,
1317 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001318 exit(1);
1319 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001320 argv++; argc--;
1321 }
1322 break;
1323 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001324 else { /* >=2 args */
1325 argv++; argc--;
1326 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001327 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001328
1329 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001330 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001331 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001332 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001333 case 'N' : cfg_maxpconn = atol(*argv); break;
Emeric Brun2b920a12010-09-23 18:30:22 +02001334 case 'L' : strncpy(localpeer, *argv, sizeof(localpeer) - 1); break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001335 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001336 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
1337 Alert("Cannot load configuration file/directory %s : %s\n",
1338 *argv,
1339 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001340 exit(1);
1341 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001342 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001343 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001344 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001345 }
1346 }
1347 }
1348 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001349 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001350 argv++; argc--;
1351 }
1352
1353 global.mode = MODE_STARTING | /* during startup, we want most of the alerts */
William Lallemand095ba4c2017-06-01 17:38:50 +02001354 (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
Willy Tarreaubaaee002006-06-26 02:48:02 +02001355 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
1356
William Lallemandcb11fd22017-06-01 17:38:52 +02001357 /* Master workers wait mode */
1358 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_WAIT_ONLY") != NULL)) {
1359
1360 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
1361 mworker_wait();
1362 }
1363
1364 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1365 atexit_flag = 1;
1366 atexit(reexec_on_failure);
1367 }
1368
Willy Tarreau576132e2011-09-10 19:26:56 +02001369 if (change_dir && chdir(change_dir) < 0) {
1370 Alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
1371 exit(1);
1372 }
1373
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001374 /* handle cfgfiles that are actualy directories */
1375 cfgfiles_expand_directories();
1376
1377 if (LIST_ISEMPTY(&cfg_cfgfiles))
1378 usage(progname);
1379
Willy Tarreaubaaee002006-06-26 02:48:02 +02001380 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001381
1382 init_default_instance();
1383
Willy Tarreau477ecd82010-01-03 21:12:30 +01001384 list_for_each_entry(wl, &cfg_cfgfiles, list) {
Willy Tarreauc4382422009-12-06 13:10:44 +01001385 int ret;
1386
Willy Tarreau477ecd82010-01-03 21:12:30 +01001387 ret = readcfgfile(wl->s);
Willy Tarreauc4382422009-12-06 13:10:44 +01001388 if (ret == -1) {
1389 Alert("Could not open configuration file %s : %s\n",
Willy Tarreau477ecd82010-01-03 21:12:30 +01001390 wl->s, strerror(errno));
Willy Tarreauc4382422009-12-06 13:10:44 +01001391 exit(1);
1392 }
Willy Tarreau25a67fa2009-12-15 21:46:25 +01001393 if (ret & (ERR_ABORT|ERR_FATAL))
Willy Tarreau477ecd82010-01-03 21:12:30 +01001394 Alert("Error(s) found in configuration file : %s\n", wl->s);
Willy Tarreau25a67fa2009-12-15 21:46:25 +01001395 err_code |= ret;
Willy Tarreau058e9072009-07-20 09:30:05 +02001396 if (err_code & ERR_ABORT)
Willy Tarreau5d01a632009-06-22 16:02:30 +02001397 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001398 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001399
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001400 /* do not try to resolve arguments nor to spot inconsistencies when
1401 * the configuration contains fatal errors caused by files not found
1402 * or failed memory allocations.
1403 */
1404 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1405 Alert("Fatal errors found in configuration.\n");
1406 exit(1);
1407 }
1408
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +01001409 pattern_finalize_config();
1410
Willy Tarreaubb925012009-07-23 13:36:36 +02001411 err_code |= check_config_validity();
1412 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1413 Alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001414 exit(1);
1415 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001416
Willy Tarreau70060452015-12-14 12:46:07 +01001417 /* recompute the amount of per-process memory depending on nbproc and
1418 * the shared SSL cache size (allowed to exist in all processes).
1419 */
1420 if (global.rlimit_memmax_all) {
1421#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
1422 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
1423
1424 global.rlimit_memmax =
1425 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
1426 ssl_cache_bytes) / global.nbproc +
1427 ssl_cache_bytes + 1048575LL) / 1048576LL;
1428#else
1429 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
1430#endif
1431 }
1432
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001433#ifdef CONFIG_HAP_NS
1434 err_code |= netns_init();
1435 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1436 Alert("Failed to initialize namespace support.\n");
1437 exit(1);
1438 }
1439#endif
1440
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001441 /* Apply server states */
1442 apply_server_state();
1443
1444 for (px = proxy; px; px = px->next)
1445 srv_compute_all_admin_states(px);
1446
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001447 /* Apply servers' configured address */
1448 err_code |= srv_init_addr();
1449 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1450 Alert("Failed to initialize server(s) addr.\n");
1451 exit(1);
1452 }
1453
Willy Tarreaubaaee002006-06-26 02:48:02 +02001454 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001455 struct peers *pr;
1456 struct proxy *px;
1457
1458 for (pr = peers; pr; pr = pr->next)
1459 if (pr->peers_fe)
1460 break;
1461
1462 for (px = proxy; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +02001463 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001464 break;
1465
1466 if (pr || px) {
1467 /* At least one peer or one listener has been found */
1468 qfprintf(stdout, "Configuration file is valid\n");
1469 exit(0);
1470 }
1471 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
1472 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001473 }
1474
Willy Tarreaue9b26022011-08-01 20:57:55 +02001475 global_listener_queue_task = task_new();
1476 if (!global_listener_queue_task) {
1477 Alert("Out of memory when initializing global task\n");
1478 exit(1);
1479 }
1480 /* very simple initialization, users will queue the task if needed */
1481 global_listener_queue_task->context = NULL; /* not even a context! */
1482 global_listener_queue_task->process = manage_global_listener_queue;
1483 global_listener_queue_task->expire = TICK_ETERNITY;
1484
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001485 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02001486 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02001487
Willy Tarreaue6945732016-12-21 19:57:00 +01001488 list_for_each_entry(pcf, &post_check_list, list) {
1489 err_code |= pcf->fct();
1490 if (err_code & (ERR_ABORT|ERR_FATAL))
1491 exit(1);
1492 }
1493
Willy Tarreaubaaee002006-06-26 02:48:02 +02001494 if (cfg_maxconn > 0)
1495 global.maxconn = cfg_maxconn;
1496
1497 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02001498 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001499 global.pidfile = strdup(cfg_pidfile);
1500 }
1501
Willy Tarreaud0256482015-01-15 21:45:22 +01001502 /* Now we want to compute the maxconn and possibly maxsslconn values.
1503 * It's a bit tricky. If memmax is not set, maxconn defaults to
1504 * DEFAULT_MAXCONN and maxsslconn defaults to DEFAULT_MAXSSLCONN.
1505 *
1506 * If memmax is set, then it depends on which values are set. If
1507 * maxsslconn is set, we use memmax to determine how many cleartext
1508 * connections may be added, and set maxconn to the sum of the two.
1509 * If maxconn is set and not maxsslconn, maxsslconn is computed from
1510 * the remaining amount of memory between memmax and the cleartext
1511 * connections. If neither are set, then it is considered that all
1512 * connections are SSL-capable, and maxconn is computed based on this,
1513 * then maxsslconn accordingly. We need to know if SSL is used on the
1514 * frontends, backends, or both, because when it's used on both sides,
1515 * we need twice the value for maxsslconn, but we only count the
1516 * handshake once since it is not performed on the two sides at the
1517 * same time (frontend-side is terminated before backend-side begins).
1518 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01001519 * ssl_handshake_cost during its initialization. In any case, if
1520 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
1521 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01001522 */
1523 if (!global.rlimit_memmax) {
1524 if (global.maxconn == 0) {
1525 global.maxconn = DEFAULT_MAXCONN;
1526 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1527 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
1528 }
1529 }
1530#ifdef USE_OPENSSL
1531 else if (!global.maxconn && !global.maxsslconn &&
1532 (global.ssl_used_frontend || global.ssl_used_backend)) {
1533 /* memmax is set, compute everything automatically. Here we want
1534 * to ensure that all SSL connections will be served. We take
1535 * care of the number of sides where SSL is used, and consider
1536 * the worst case : SSL used on both sides and doing a handshake
1537 * simultaneously. Note that we can't have more than maxconn
1538 * handshakes at a time by definition, so for the worst case of
1539 * two SSL conns per connection, we count a single handshake.
1540 */
1541 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1542 int64_t mem = global.rlimit_memmax * 1048576ULL;
1543
1544 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1545 mem -= global.maxzlibmem;
1546 mem = mem * MEM_USABLE_RATIO;
1547
1548 global.maxconn = mem /
Willy Tarreau87b09662015-04-03 00:22:06 +02001549 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
Willy Tarreaud0256482015-01-15 21:45:22 +01001550 sides * global.ssl_session_max_cost + // SSL buffers, one per side
1551 global.ssl_handshake_max_cost); // 1 handshake per connection max
1552
1553 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001554#ifdef SYSTEM_MAXCONN
1555 if (global.maxconn > DEFAULT_MAXCONN)
1556 global.maxconn = DEFAULT_MAXCONN;
1557#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01001558 global.maxsslconn = sides * global.maxconn;
1559 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1560 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
1561 global.maxconn, global.maxsslconn);
1562 }
1563 else if (!global.maxsslconn &&
1564 (global.ssl_used_frontend || global.ssl_used_backend)) {
1565 /* memmax and maxconn are known, compute maxsslconn automatically.
1566 * maxsslconn being forced, we don't know how many of it will be
1567 * on each side if both sides are being used. The worst case is
1568 * when all connections use only one SSL instance because
1569 * handshakes may be on two sides at the same time.
1570 */
1571 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1572 int64_t mem = global.rlimit_memmax * 1048576ULL;
1573 int64_t sslmem;
1574
1575 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1576 mem -= global.maxzlibmem;
1577 mem = mem * MEM_USABLE_RATIO;
1578
Willy Tarreau87b09662015-04-03 00:22:06 +02001579 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01001580 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
1581 global.maxsslconn = round_2dig(global.maxsslconn);
1582
1583 if (sslmem <= 0 || global.maxsslconn < sides) {
1584 Alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
1585 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1586 "without SSL is %d, but %d was found and SSL is in use.\n",
1587 global.rlimit_memmax,
Willy Tarreau87b09662015-04-03 00:22:06 +02001588 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
Willy Tarreaud0256482015-01-15 21:45:22 +01001589 global.maxconn);
1590 exit(1);
1591 }
1592
1593 if (global.maxsslconn > sides * global.maxconn)
1594 global.maxsslconn = sides * global.maxconn;
1595
1596 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1597 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
1598 }
1599#endif
1600 else if (!global.maxconn) {
1601 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
1602 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1603 int64_t mem = global.rlimit_memmax * 1048576ULL;
1604 int64_t clearmem;
1605
1606 if (global.ssl_used_frontend || global.ssl_used_backend)
1607 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1608
1609 mem -= global.maxzlibmem;
1610 mem = mem * MEM_USABLE_RATIO;
1611
1612 clearmem = mem;
1613 if (sides)
1614 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
1615
Willy Tarreau87b09662015-04-03 00:22:06 +02001616 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01001617 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001618#ifdef SYSTEM_MAXCONN
1619 if (global.maxconn > DEFAULT_MAXCONN)
1620 global.maxconn = DEFAULT_MAXCONN;
1621#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01001622
1623 if (clearmem <= 0 || !global.maxconn) {
1624 Alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
1625 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1626 "is %d, but %d was found.\n",
1627 global.rlimit_memmax,
1628 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
1629 global.maxsslconn);
1630 exit(1);
1631 }
1632
1633 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
1634 if (sides && global.maxsslconn > sides * global.maxconn) {
1635 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
1636 "to be limited to %d. Better reduce global.maxsslconn to get more "
1637 "room for extra connections.\n", global.maxsslconn, global.maxconn);
1638 }
1639 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
1640 }
1641 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001642
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001643 if (!global.maxpipes) {
1644 /* maxpipes not specified. Count how many frontends and backends
1645 * may be using splicing, and bound that to maxconn.
1646 */
1647 struct proxy *cur;
1648 int nbfe = 0, nbbe = 0;
1649
1650 for (cur = proxy; cur; cur = cur->next) {
1651 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1652 if (cur->cap & PR_CAP_FE)
1653 nbfe += cur->maxconn;
1654 if (cur->cap & PR_CAP_BE)
Willy Tarreauafb48762009-01-25 10:42:05 +01001655 nbbe += cur->fullconn ? cur->fullconn : global.maxconn;
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001656 }
1657 }
1658 global.maxpipes = MAX(nbfe, nbbe);
1659 if (global.maxpipes > global.maxconn)
1660 global.maxpipes = global.maxconn;
Willy Tarreau686ac822009-01-25 14:06:58 +01001661 global.maxpipes /= 4;
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001662 }
1663
1664
Willy Tarreauabacc2c2011-09-07 14:26:33 +02001665 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001666 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +01001667 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001668
Willy Tarreau3c63fd82011-09-07 18:00:47 +02001669 if (global.stats_fe)
1670 global.maxsock += global.stats_fe->maxconn;
1671
1672 if (peers) {
1673 /* peers also need to bypass global maxconn */
1674 struct peers *p = peers;
1675
1676 for (p = peers; p; p = p->next)
1677 if (p->peers_fe)
1678 global.maxsock += p->peers_fe->maxconn;
1679 }
1680
Willy Tarreau1db37712007-06-03 17:16:49 +02001681 if (global.tune.maxpollevents <= 0)
1682 global.tune.maxpollevents = MAX_POLL_EVENTS;
1683
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01001684 if (global.tune.recv_enough == 0)
1685 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
1686
Willy Tarreau27097842015-09-28 13:53:23 +02001687 if (global.tune.maxrewrite < 0)
1688 global.tune.maxrewrite = MAXREWRITE;
1689
Willy Tarreau27a674e2009-08-17 07:23:33 +02001690 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
1691 global.tune.maxrewrite = global.tune.bufsize / 2;
1692
Willy Tarreaubaaee002006-06-26 02:48:02 +02001693 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
1694 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02001695 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02001696 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
1697 }
1698
William Lallemand095ba4c2017-06-01 17:38:50 +02001699 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02001700 /* command line daemon mode inhibits foreground and debug modes mode */
1701 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02001702 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001703 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02001704
1705 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001706
William Lallemand095ba4c2017-06-01 17:38:50 +02001707 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
1708 Warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
1709 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001710 }
1711
William Lallemand095ba4c2017-06-01 17:38:50 +02001712 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02001713 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
1714 Warning("<nbproc> is only meaningful in daemon mode. Setting limit to 1 process.\n");
1715 global.nbproc = 1;
1716 }
1717
1718 if (global.nbproc < 1)
1719 global.nbproc = 1;
1720
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02001721 swap_buffer = calloc(1, global.tune.bufsize);
1722 get_http_auth_buff = calloc(1, global.tune.bufsize);
Thierry FOURNIER7e25df32015-07-24 19:31:59 +02001723 static_table_key = calloc(1, sizeof(*static_table_key));
Willy Tarreau8096de92010-02-26 11:12:27 +01001724
Vincent Bernat3c2f2f22016-04-03 13:48:42 +02001725 fdinfo = calloc(1, sizeof(struct fdinfo) * (global.maxsock));
1726 fdtab = calloc(1, sizeof(struct fdtab) * (global.maxsock));
Willy Tarreauef1d1f82007-04-16 00:25:25 +02001727 /*
1728 * Note: we could register external pollers here.
1729 * Built-in pollers have been registered before main().
1730 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02001731
Willy Tarreau43b78992009-01-25 15:42:27 +01001732 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001733 disable_poller("kqueue");
1734
Willy Tarreau43b78992009-01-25 15:42:27 +01001735 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02001736 disable_poller("epoll");
1737
Willy Tarreau43b78992009-01-25 15:42:27 +01001738 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02001739 disable_poller("poll");
1740
Willy Tarreau43b78992009-01-25 15:42:27 +01001741 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02001742 disable_poller("select");
1743
1744 /* Note: we could disable any poller by name here */
1745
Christopher Fauletb3f4e142016-03-07 12:46:38 +01001746 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02001747 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01001748 fprintf(stderr, "\n");
1749 list_filters(stderr);
1750 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02001751
Willy Tarreau4f60f162007-04-08 16:39:58 +02001752 if (!init_pollers()) {
Willy Tarreau3fa87b12013-03-31 14:41:15 +02001753 Alert("No polling mechanism available.\n"
1754 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
1755 " is too low on this platform to support maxconn and the number of listeners\n"
1756 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
1757 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
Prach Pongpanichb837e682013-05-14 20:56:28 +02001758 " global maxconn setting to accommodate the system's limitation. For reference,\n"
Willy Tarreau3fa87b12013-03-31 14:41:15 +02001759 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
1760 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
1761 " check build settings using 'haproxy -vv'.\n\n",
1762 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001763 exit(1);
1764 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02001765 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
1766 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001767 }
1768
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02001769 if (!global.node)
1770 global.node = strdup(hostname);
1771
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01001772 if (!hlua_post_init())
1773 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01001774
Baptiste Assmann325137d2015-04-13 23:40:55 +02001775 /* initialize structures for name resolution */
Baptiste Assmann5cd1b922017-02-02 22:44:15 +01001776 if (!dns_init_resolvers(0))
Baptiste Assmann325137d2015-04-13 23:40:55 +02001777 exit(1);
Maxime de Roucy0f503922016-05-13 23:52:55 +02001778
1779 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001780}
1781
Simon Horman6fb82592011-07-15 13:14:11 +09001782static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09001783{
Simon Hormanac821422011-07-15 13:14:09 +09001784 struct acl_term_suite *suite, *suiteb;
1785 struct acl_term *term, *termb;
1786
Simon Horman6fb82592011-07-15 13:14:11 +09001787 if (!cond)
1788 return;
1789
1790 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
1791 list_for_each_entry_safe(term, termb, &suite->terms, list) {
1792 LIST_DEL(&term->list);
1793 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09001794 }
Simon Horman6fb82592011-07-15 13:14:11 +09001795 LIST_DEL(&suite->list);
1796 free(suite);
1797 }
1798
1799 free(cond);
1800}
1801
1802static void deinit_tcp_rules(struct list *rules)
1803{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +02001804 struct act_rule *trule, *truleb;
Simon Horman6fb82592011-07-15 13:14:11 +09001805
1806 list_for_each_entry_safe(trule, truleb, rules, list) {
Simon Hormanac821422011-07-15 13:14:09 +09001807 LIST_DEL(&trule->list);
Simon Horman6fb82592011-07-15 13:14:11 +09001808 deinit_acl_cond(trule->cond);
Simon Hormanac821422011-07-15 13:14:09 +09001809 free(trule);
1810 }
1811}
1812
Simon Horman6fb82592011-07-15 13:14:11 +09001813static void deinit_stick_rules(struct list *rules)
1814{
1815 struct sticking_rule *rule, *ruleb;
1816
1817 list_for_each_entry_safe(rule, ruleb, rules, list) {
1818 LIST_DEL(&rule->list);
1819 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02001820 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09001821 free(rule);
1822 }
1823}
1824
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001825void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001826{
Willy Tarreau4d2d0982007-05-14 00:39:29 +02001827 struct proxy *p = proxy, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001828 struct cap_hdr *h,*h_next;
1829 struct server *s,*s_next;
1830 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001831 struct acl_cond *cond, *condb;
1832 struct hdr_exp *exp, *expb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001833 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001834 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001835 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02001836 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01001837 struct wordlist *wl, *wlb;
Willy Tarreauf4f04122010-01-28 18:10:50 +01001838 struct cond_wordlist *cwl, *cwlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001839 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02001840 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01001841 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02001842 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01001843 struct build_opts_str *bol, *bolb;
Willy Tarreau05554e62016-12-21 20:46:26 +01001844 struct post_deinit_fct *pdf;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001845 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001846
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001847 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001848 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02001849 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02001850 free(p->id);
1851 free(p->check_req);
1852 free(p->cookie_name);
1853 free(p->cookie_domain);
1854 free(p->url_param_name);
1855 free(p->capture_name);
1856 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09001857 free(p->rdp_cookie_name);
Willy Tarreau62a61232013-04-12 18:13:46 +02001858 if (p->conf.logformat_string != default_http_log_format &&
1859 p->conf.logformat_string != default_tcp_log_format &&
1860 p->conf.logformat_string != clf_http_log_format)
1861 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02001862
Willy Tarreau62a61232013-04-12 18:13:46 +02001863 free(p->conf.lfs_file);
1864 free(p->conf.uniqueid_format_string);
1865 free(p->conf.uif_file);
Godbachaf1a75d2013-10-02 17:10:11 +08001866 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001867
Dragan Dosen0b85ece2015-09-25 19:17:44 +02001868 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
1869 free(p->conf.logformat_sd_string);
1870 free(p->conf.lfsd_file);
1871
Willy Tarreaua534fea2008-08-03 12:19:50 +02001872 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +02001873 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001874
Willy Tarreauf4f04122010-01-28 18:10:50 +01001875 list_for_each_entry_safe(cwl, cwlb, &p->req_add, list) {
1876 LIST_DEL(&cwl->list);
1877 free(cwl->s);
1878 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01001879 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001880
Willy Tarreauf4f04122010-01-28 18:10:50 +01001881 list_for_each_entry_safe(cwl, cwlb, &p->rsp_add, list) {
1882 LIST_DEL(&cwl->list);
1883 free(cwl->s);
1884 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01001885 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001886
Willy Tarreaub80c2302007-11-30 20:51:32 +01001887 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
1888 LIST_DEL(&cond->list);
1889 prune_acl_cond(cond);
1890 free(cond);
1891 }
1892
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001893 for (exp = p->req_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001894 if (exp->preg) {
Thierry FOURNIER09af0d62014-06-18 11:35:54 +02001895 regex_free(exp->preg);
1896 free(exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001897 }
1898
Willy Tarreau98d04852015-05-26 12:18:29 +02001899 free((char *)exp->replace);
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001900 expb = exp;
1901 exp = exp->next;
1902 free(expb);
1903 }
1904
1905 for (exp = p->rsp_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001906 if (exp->preg) {
Thierry FOURNIER09af0d62014-06-18 11:35:54 +02001907 regex_free(exp->preg);
1908 free(exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001909 }
1910
Willy Tarreau98d04852015-05-26 12:18:29 +02001911 free((char *)exp->replace);
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001912 expb = exp;
1913 exp = exp->next;
1914 free(expb);
1915 }
1916
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001917 /* build a list of unique uri_auths */
1918 if (!ua)
1919 ua = p->uri_auth;
1920 else {
1921 /* check if p->uri_auth is unique */
1922 for (uap = ua; uap; uap=uap->next)
1923 if (uap == p->uri_auth)
1924 break;
1925
Willy Tarreauaccc4e12008-06-24 11:14:45 +02001926 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001927 /* add it, if it is */
1928 p->uri_auth->next = ua;
1929 ua = p->uri_auth;
1930 }
1931 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001932
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001933 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
1934 LIST_DEL(&acl->list);
1935 prune_acl(acl);
1936 free(acl);
1937 }
1938
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001939 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
1940 LIST_DEL(&srule->list);
1941 prune_acl_cond(srule->cond);
1942 free(srule->cond);
1943 free(srule);
1944 }
1945
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001946 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
1947 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001948 if (rule->cond) {
1949 prune_acl_cond(rule->cond);
1950 free(rule->cond);
Thierry FOURNIER / OZON.IO4ed1c952016-11-24 23:57:54 +01001951 free(rule->file);
Willy Tarreauf51658d2014-04-23 01:21:56 +02001952 }
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001953 free(rule);
1954 }
1955
Willy Tarreaub463dfb2008-06-07 23:08:56 +02001956 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
1957 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01001958 if (rdr->cond) {
1959 prune_acl_cond(rdr->cond);
1960 free(rdr->cond);
1961 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02001962 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01001963 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
1964 LIST_DEL(&lf->list);
1965 free(lf);
1966 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02001967 free(rdr);
1968 }
1969
William Lallemand0f99e342011-10-12 17:50:54 +02001970 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
1971 LIST_DEL(&log->list);
1972 free(log);
1973 }
1974
William Lallemand723b73a2012-02-08 16:37:49 +01001975 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
1976 LIST_DEL(&lf->list);
1977 free(lf);
1978 }
1979
Dragan Dosen0b85ece2015-09-25 19:17:44 +02001980 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
1981 LIST_DEL(&lf->list);
1982 free(lf);
1983 }
1984
Simon Hormanac821422011-07-15 13:14:09 +09001985 deinit_tcp_rules(&p->tcp_req.inspect_rules);
1986 deinit_tcp_rules(&p->tcp_req.l4_rules);
1987
Simon Horman6fb82592011-07-15 13:14:11 +09001988 deinit_stick_rules(&p->storersp_rules);
1989 deinit_stick_rules(&p->sticking_rules);
1990
Willy Tarreaubaaee002006-06-26 02:48:02 +02001991 h = p->req_cap;
1992 while (h) {
1993 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02001994 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +02001995 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001996 free(h);
1997 h = h_next;
1998 }/* end while(h) */
1999
2000 h = p->rsp_cap;
2001 while (h) {
2002 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002003 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +02002004 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002005 free(h);
2006 h = h_next;
2007 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002008
Willy Tarreaubaaee002006-06-26 02:48:02 +02002009 s = p->srv;
2010 while (s) {
2011 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002012
Willy Tarreau5b3a2022012-09-28 15:01:02 +02002013 if (s->check.task) {
2014 task_delete(s->check.task);
2015 task_free(s->check.task);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002016 }
Simon Hormand60d6912013-11-25 10:46:36 +09002017 if (s->agent.task) {
2018 task_delete(s->agent.task);
2019 task_free(s->agent.task);
2020 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002021
Willy Tarreau2e993902011-10-31 11:53:20 +01002022 if (s->warmup) {
2023 task_delete(s->warmup);
2024 task_free(s->warmup);
2025 }
2026
Willy Tarreaua534fea2008-08-03 12:19:50 +02002027 free(s->id);
2028 free(s->cookie);
Willy Tarreau1ae1b7b2012-09-28 15:28:30 +02002029 free(s->check.bi);
2030 free(s->check.bo);
Simon Hormand60d6912013-11-25 10:46:36 +09002031 free(s->agent.bi);
2032 free(s->agent.bo);
James Brown55f9ff12015-10-21 18:19:05 -07002033 free(s->agent.send_string);
Sárközi, László34c01792014-09-05 10:08:23 +02002034 free((char*)s->conf.file);
Willy Tarreau17d45382016-12-22 21:16:08 +01002035
2036 if (s->use_ssl || s->check.use_ssl) {
2037 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2038 xprt_get(XPRT_SSL)->destroy_srv(s);
2039 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002040 free(s);
2041 s = s_next;
2042 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002043
Willy Tarreau4348fad2012-09-20 16:48:07 +02002044 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002045 /*
2046 * Zombie proxy, the listener just pretend to be up
2047 * because they still hold an opened fd.
2048 * Close it and give the listener its real state.
2049 */
2050 if (p->state == PR_STSTOPPED && l->state >= LI_ZOMBIE) {
2051 close(l->fd);
2052 l->state = LI_INIT;
2053 }
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02002054 unbind_listener(l);
2055 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002056 LIST_DEL(&l->by_fe);
2057 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002058 free(l->name);
2059 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002060 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002061 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002062
Willy Tarreau4348fad2012-09-20 16:48:07 +02002063 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002064 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002065 if (bind_conf->xprt->destroy_bind_conf)
2066 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002067 free(bind_conf->file);
2068 free(bind_conf->arg);
2069 LIST_DEL(&bind_conf->by_fe);
2070 free(bind_conf);
2071 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002072
Christopher Fauletd7c91962015-04-30 11:48:27 +02002073 flt_deinit(p);
2074
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002075 free(p->desc);
2076 free(p->fwdfor_hdr_name);
2077
Willy Tarreauff011f22011-01-06 17:51:27 +01002078 free_http_req_rules(&p->http_req_rules);
Sasha Pachev218f0642014-06-16 12:05:59 -06002079 free_http_res_rules(&p->http_res_rules);
Willy Tarreau918ff602011-07-25 16:33:49 +02002080 free(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002081
Willy Tarreaucf7f3202007-05-13 22:46:04 +02002082 pool_destroy2(p->req_cap_pool);
2083 pool_destroy2(p->rsp_cap_pool);
Simon Hormanb08584a2011-07-15 13:14:10 +09002084 pool_destroy2(p->table.pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002085
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002086 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002087 p = p->next;
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002088 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002089 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002090
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002091 while (ua) {
2092 uap = ua;
2093 ua = ua->next;
2094
Willy Tarreaua534fea2008-08-03 12:19:50 +02002095 free(uap->uri_prefix);
2096 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002097 free(uap->node);
2098 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002099
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002100 userlist_free(uap->userlist);
Willy Tarreauff011f22011-01-06 17:51:27 +01002101 free_http_req_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002102
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002103 free(uap);
2104 }
2105
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002106 userlist_free(userlist);
2107
David Carlier834cb2e2015-09-25 12:02:25 +01002108 cfg_unregister_sections();
2109
2110 free_trash_buffers();
2111 chunk_destroy(&trash);
2112
Willy Tarreaudd815982007-10-16 12:25:14 +02002113 protocol_unbind_all();
2114
Willy Tarreau05554e62016-12-21 20:46:26 +01002115 list_for_each_entry(pdf, &post_deinit_list, list)
2116 pdf->fct();
2117
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002118 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002119 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002120 free(global.chroot); global.chroot = NULL;
2121 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002122 free(global.node); global.node = NULL;
2123 free(global.desc); global.desc = NULL;
Godbach4cc1b0d2013-06-26 16:49:51 +08002124 free(fdinfo); fdinfo = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002125 free(fdtab); fdtab = NULL;
2126 free(oldpids); oldpids = NULL;
David Carlier834cb2e2015-09-25 12:02:25 +01002127 free(static_table_key); static_table_key = NULL;
2128 free(get_http_auth_buff); get_http_auth_buff = NULL;
2129 free(swap_buffer); swap_buffer = NULL;
Willy Tarreaue9b26022011-08-01 20:57:55 +02002130 free(global_listener_queue_task); global_listener_queue_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002131
William Lallemand0f99e342011-10-12 17:50:54 +02002132 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2133 LIST_DEL(&log->list);
2134 free(log);
2135 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002136 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002137 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002138 LIST_DEL(&wl->list);
2139 free(wl);
2140 }
2141
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002142 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2143 if (bol->must_free)
2144 free((void *)bol->str);
2145 LIST_DEL(&bol->list);
2146 free(bol);
2147 }
2148
Christopher Fauletff2613e2016-11-09 11:36:17 +01002149 vars_prune(&global.vars, NULL, NULL);
2150
Willy Tarreau87b09662015-04-03 00:22:06 +02002151 pool_destroy2(pool2_stream);
Willy Tarreaufeb76402015-04-03 14:10:06 +02002152 pool_destroy2(pool2_session);
Willy Tarreauf2943dc2012-10-26 20:10:28 +02002153 pool_destroy2(pool2_connection);
Willy Tarreaub686afd2017-02-08 11:06:11 +01002154 pool_destroy2(pool2_trash);
Willy Tarreau9b28e032012-10-12 23:49:43 +02002155 pool_destroy2(pool2_buffer);
Willy Tarreau332f8bf2007-05-13 21:36:56 +02002156 pool_destroy2(pool2_requri);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02002157 pool_destroy2(pool2_task);
Willy Tarreau086b3b42007-05-13 21:45:51 +02002158 pool_destroy2(pool2_capture);
Willy Tarreaue4d7e552007-05-13 20:19:55 +02002159 pool_destroy2(pool2_pendconn);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002160 pool_destroy2(pool2_sig_handlers);
Willy Tarreau34eb6712011-10-24 18:15:04 +02002161 pool_destroy2(pool2_hdr_idx);
Willy Tarreau63986c72015-04-03 22:55:33 +02002162 pool_destroy2(pool2_http_txn);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002163 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002164} /* end deinit() */
2165
Willy Tarreaubaaee002006-06-26 02:48:02 +02002166
Willy Tarreau918ff602011-07-25 16:33:49 +02002167/* Runs the polling loop */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01002168static void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002169{
Willy Tarreau0c303ee2008-07-07 00:09:58 +02002170 int next;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002171
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002172 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002173 while (1) {
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002174 /* Process a few tasks */
2175 process_runnable_tasks();
2176
Willy Tarreau29857942009-05-10 09:01:21 +02002177 /* check if we caught some signals and process them */
2178 signal_process_queue();
2179
Willy Tarreau58b458d2008-06-29 22:40:23 +02002180 /* Check if we can expire some tasks */
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002181 next = wake_expired_tasks();
Willy Tarreau4f60f162007-04-08 16:39:58 +02002182
Willy Tarreauaf7ad002010-08-31 15:39:26 +02002183 /* stop when there's nothing left to do */
2184 if (jobs == 0)
Willy Tarreau4f60f162007-04-08 16:39:58 +02002185 break;
2186
Willy Tarreau10146c92015-04-13 20:44:19 +02002187 /* expire immediately if events are pending */
Christopher Faulet34c5cc92016-12-06 09:15:30 +01002188 if (fd_cache_num || tasks_run_queue || signal_queue_len || applets_active_queue)
Willy Tarreau10146c92015-04-13 20:44:19 +02002189 next = now_ms;
2190
Willy Tarreau58b458d2008-06-29 22:40:23 +02002191 /* The poller will ensure it returns around <next> */
Willy Tarreau0c303ee2008-07-07 00:09:58 +02002192 cur_poller.poll(&cur_poller, next);
Willy Tarreau033cd9d2014-01-25 19:24:15 +01002193 fd_process_cached_events();
Willy Tarreau3c595ac2015-04-19 09:59:31 +02002194 applet_run_active();
Willy Tarreau4f60f162007-04-08 16:39:58 +02002195 }
2196}
2197
Willy Tarreaue9b26022011-08-01 20:57:55 +02002198/* This is the global management task for listeners. It enables listeners waiting
2199 * for global resources when there are enough free resource, or at least once in
2200 * a while. It is designed to be called as a task.
2201 */
2202static struct task *manage_global_listener_queue(struct task *t)
2203{
2204 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02002205 /* queue is empty, nothing to do */
2206 if (LIST_ISEMPTY(&global_listener_queue))
2207 goto out;
2208
2209 /* If there are still too many concurrent connections, let's wait for
2210 * some of them to go away. We don't need to re-arm the timer because
2211 * each of them will scan the queue anyway.
2212 */
2213 if (unlikely(actconn >= global.maxconn))
2214 goto out;
2215
2216 /* We should periodically try to enable listeners waiting for a global
2217 * resource here, because it is possible, though very unlikely, that
2218 * they have been blocked by a temporary lack of global resource such
2219 * as a file descriptor or memory and that the temporary condition has
2220 * disappeared.
2221 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002222 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02002223
2224 out:
2225 t->expire = next;
2226 task_queue(t);
2227 return t;
2228}
Willy Tarreau4f60f162007-04-08 16:39:58 +02002229
William Lallemande20b6a62017-06-01 17:38:55 +02002230void mworker_pipe_handler(int fd)
2231{
2232 char c;
2233
2234 while (read(fd, &c, 1) == -1) {
2235 if (errno == EINTR)
2236 continue;
2237 if (errno == EAGAIN) {
2238 fd_cant_recv(fd);
2239 return;
2240 }
2241 break;
2242 }
2243
2244 deinit();
2245 exit(EXIT_FAILURE);
2246 return;
2247}
2248
2249void mworker_pipe_register(int pipefd[2])
2250{
2251 close(mworker_pipe[1]); /* close the write end of the master pipe in the children */
2252
2253 fcntl(mworker_pipe[0], F_SETFL, O_NONBLOCK);
2254 fdtab[mworker_pipe[0]].owner = mworker_pipe;
2255 fdtab[mworker_pipe[0]].iocb = mworker_pipe_handler;
2256 fd_insert(mworker_pipe[0]);
2257 fd_want_recv(mworker_pipe[0]);
2258 }
2259
2260
Willy Tarreaubaaee002006-06-26 02:48:02 +02002261int main(int argc, char **argv)
2262{
2263 int err, retry;
2264 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02002265 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02002266 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002267
Emeric Bruncf20bf12010-10-22 16:06:11 +02002268 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002269 signal_register_fct(SIGQUIT, dump, SIGQUIT);
2270 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
2271 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02002272 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002273
Willy Tarreaue437c442010-03-17 18:02:46 +01002274 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
2275 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
2276 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02002277 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002278 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002279
Willy Tarreaudc23a922011-02-16 11:10:36 +01002280 /* ulimits */
2281 if (!global.rlimit_nofile)
2282 global.rlimit_nofile = global.maxsock;
2283
2284 if (global.rlimit_nofile) {
2285 limit.rlim_cur = limit.rlim_max = global.rlimit_nofile;
2286 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02002287 /* try to set it to the max possible at least */
2288 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02002289 limit.rlim_cur = limit.rlim_max;
2290 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
2291 getrlimit(RLIMIT_NOFILE, &limit);
2292
Willy Tarreauef635472016-06-21 11:48:18 +02002293 Warning("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n", argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
2294 global.rlimit_nofile = limit.rlim_cur;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002295 }
2296 }
2297
2298 if (global.rlimit_memmax) {
2299 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01002300 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002301#ifdef RLIMIT_AS
2302 if (setrlimit(RLIMIT_AS, &limit) == -1) {
2303 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2304 argv[0], global.rlimit_memmax);
2305 }
2306#else
2307 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
2308 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2309 argv[0], global.rlimit_memmax);
2310 }
2311#endif
2312 }
2313
Olivier Houchardf73629d2017-04-05 22:33:04 +02002314 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02002315 if (strcmp("/dev/null", old_unixsocket) != 0) {
2316 if (get_old_sockets(old_unixsocket) != 0) {
2317 Alert("Failed to get the sockets from the old process!\n");
2318 if (!(global.mode & MODE_MWORKER))
2319 exit(1);
2320 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002321 }
2322 }
William Lallemand85b0bd92017-06-01 17:38:53 +02002323 get_cur_unixsocket();
2324
Willy Tarreaubaaee002006-06-26 02:48:02 +02002325 /* We will loop at most 100 times with 10 ms delay each time.
2326 * That's at most 1 second. We only send a signal to old pids
2327 * if we cannot grab at least one port.
2328 */
2329 retry = MAX_START_RETRIES;
2330 err = ERR_NONE;
2331 while (retry >= 0) {
2332 struct timeval w;
2333 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01002334 /* exit the loop on no error or fatal error */
2335 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002336 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02002337 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002338 break;
2339
2340 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
2341 * listening sockets. So on those platforms, it would be wiser to
2342 * simply send SIGUSR1, which will not be undoable.
2343 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02002344 if (tell_old_pids(SIGTTOU) == 0) {
2345 /* no need to wait if we can't contact old pids */
2346 retry = 0;
2347 continue;
2348 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002349 /* give some time to old processes to stop listening */
2350 w.tv_sec = 0;
2351 w.tv_usec = 10*1000;
2352 select(0, NULL, NULL, NULL, &w);
2353 retry--;
2354 }
2355
2356 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01002357 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02002358 if (retry != MAX_START_RETRIES && nb_oldpids) {
2359 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002360 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02002361 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002362 exit(1);
2363 }
2364
2365 if (listeners == 0) {
Willy Tarreauf2ee0162015-08-09 11:01:51 +02002366 Alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002367 /* Note: we don't have to send anything to the old pids because we
2368 * never stopped them. */
2369 exit(1);
2370 }
2371
Emeric Bruncf20bf12010-10-22 16:06:11 +02002372 err = protocol_bind_all(errmsg, sizeof(errmsg));
2373 if ((err & ~ERR_WARN) != ERR_NONE) {
2374 if ((err & ERR_ALERT) || (err & ERR_WARN))
2375 Alert("[%s.main()] %s.\n", argv[0], errmsg);
2376
Willy Tarreaudd815982007-10-16 12:25:14 +02002377 Alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
2378 protocol_unbind_all(); /* cleanup everything we can */
2379 if (nb_oldpids)
2380 tell_old_pids(SIGTTIN);
2381 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002382 } else if (err & ERR_WARN) {
2383 Alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02002384 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002385 /* Ok, all listener should now be bound, close any leftover sockets
2386 * the previous process gave us, we don't need them anymore
2387 */
2388 while (xfer_sock_list != NULL) {
2389 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
2390 close(xfer_sock_list->fd);
2391 free(xfer_sock_list->iface);
2392 free(xfer_sock_list->namespace);
2393 free(xfer_sock_list);
2394 xfer_sock_list = tmpxfer;
2395 }
Willy Tarreaudd815982007-10-16 12:25:14 +02002396
Willy Tarreaubaaee002006-06-26 02:48:02 +02002397 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002398 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
2399 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002400
Willy Tarreaubaaee002006-06-26 02:48:02 +02002401 /* MODE_QUIET can inhibit alerts and warnings below this line */
2402
2403 global.mode &= ~MODE_STARTING;
2404 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
2405 /* detach from the tty */
2406 fclose(stdin); fclose(stdout); fclose(stderr);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002407 }
2408
2409 /* open log & pid files before the chroot */
William Lallemand095ba4c2017-06-01 17:38:50 +02002410 if (global.mode & MODE_DAEMON && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002411 unlink(global.pidfile);
2412 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
2413 if (pidfd < 0) {
2414 Alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
2415 if (nb_oldpids)
2416 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02002417 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002418 exit(1);
2419 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002420 }
2421
Willy Tarreaub38651a2007-03-24 17:24:39 +01002422 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
2423 Alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002424 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002425 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01002426 exit(1);
2427 }
2428
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002429 /* If the user is not root, we'll still let him try the configuration
2430 * but we inform him that unexpected behaviour may occur.
2431 */
2432 if ((global.last_checks & LSTCHK_NETADM) && getuid())
2433 Warning("[%s.main()] Some options which require full privileges"
2434 " might not work well.\n"
2435 "", argv[0]);
2436
William Lallemand095ba4c2017-06-01 17:38:50 +02002437 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2438
2439 /* chroot if needed */
2440 if (global.chroot != NULL) {
2441 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
2442 Alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
2443 if (nb_oldpids)
2444 tell_old_pids(SIGTTIN);
2445 protocol_unbind_all();
2446 exit(1);
2447 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002448 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002449 }
2450
Willy Tarreaubaaee002006-06-26 02:48:02 +02002451 if (nb_oldpids)
Willy Tarreaubb545b42010-08-25 12:58:59 +02002452 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002453
2454 /* Note that any error at this stage will be fatal because we will not
2455 * be able to restart the old pids.
2456 */
2457
William Lallemand095ba4c2017-06-01 17:38:50 +02002458 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2459 /* setgid / setuid */
2460 if (global.gid) {
2461 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
2462 Warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
2463 " without 'uid'/'user' is generally useless.\n", argv[0]);
2464
2465 if (setgid(global.gid) == -1) {
2466 Alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
2467 protocol_unbind_all();
2468 exit(1);
2469 }
2470 }
Michael Schererab012dd2013-01-12 18:35:19 +01002471
William Lallemand095ba4c2017-06-01 17:38:50 +02002472 if (global.uid && setuid(global.uid) == -1) {
2473 Alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Michael Schererab012dd2013-01-12 18:35:19 +01002474 protocol_unbind_all();
2475 exit(1);
2476 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002477 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002478 /* check ulimits */
2479 limit.rlim_cur = limit.rlim_max = 0;
2480 getrlimit(RLIMIT_NOFILE, &limit);
2481 if (limit.rlim_cur < global.maxsock) {
2482 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 +02002483 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002484 }
2485
William Lallemand095ba4c2017-06-01 17:38:50 +02002486 if (global.mode & (MODE_DAEMON | MODE_MWORKER)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002487 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002488 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002489 int ret = 0;
2490 int proc;
2491
William Lallemand73b85e72017-06-01 17:38:51 +02002492 children = calloc(global.nbproc, sizeof(int));
William Lallemand095ba4c2017-06-01 17:38:50 +02002493 /*
2494 * if daemon + mworker: must fork here to let a master
2495 * process live in background before forking children
2496 */
William Lallemand73b85e72017-06-01 17:38:51 +02002497
2498 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
2499 && (global.mode & MODE_MWORKER)
2500 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02002501 ret = fork();
2502 if (ret < 0) {
2503 Alert("[%s.main()] Cannot fork.\n", argv[0]);
2504 protocol_unbind_all();
2505 exit(1); /* there has been an error */
2506 }
2507 /* parent leave to daemonize */
2508 if (ret > 0)
2509 exit(0);
2510 }
William Lallemande20b6a62017-06-01 17:38:55 +02002511
2512 if (global.mode & MODE_MWORKER) {
2513 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
2514 char *msg = NULL;
2515 /* master pipe to ensure the master is still alive */
2516 ret = pipe(mworker_pipe);
2517 if (ret < 0) {
2518 Warning("[%s.main()] Cannot create master pipe.\n", argv[0]);
2519 } else {
2520 memprintf(&msg, "%d", mworker_pipe[0]);
2521 setenv("HAPROXY_MWORKER_PIPE_RD", msg, 1);
2522 memprintf(&msg, "%d", mworker_pipe[1]);
2523 setenv("HAPROXY_MWORKER_PIPE_WR", msg, 1);
2524 free(msg);
2525 }
2526 } else {
2527 mworker_pipe[0] = atol(getenv("HAPROXY_MWORKER_PIPE_RD"));
2528 mworker_pipe[1] = atol(getenv("HAPROXY_MWORKER_PIPE_WR"));
2529 if (mworker_pipe[0] <= 0 || mworker_pipe[1] <= 0) {
2530 Warning("[%s.main()] Cannot get master pipe FDs.\n", argv[0]);
2531 }
2532 }
2533 }
2534
Willy Tarreaubaaee002006-06-26 02:48:02 +02002535 /* the father launches the required number of processes */
2536 for (proc = 0; proc < global.nbproc; proc++) {
2537 ret = fork();
2538 if (ret < 0) {
2539 Alert("[%s.main()] Cannot fork.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002540 protocol_unbind_all();
Willy Tarreaud6803712007-10-16 07:44:56 +02002541 exit(1); /* there has been an error */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002542 }
2543 else if (ret == 0) /* child breaks here */
2544 break;
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +01002545 children[proc] = ret;
Willy Tarreau269ab312012-09-05 08:02:48 +02002546 if (pidfd >= 0) {
2547 char pidstr[100];
2548 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002549 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002550 }
Willy Tarreaudcd47712007-11-04 23:35:08 +01002551 relative_pid++; /* each child will get a different one */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002552 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01002553
2554#ifdef USE_CPU_AFFINITY
2555 if (proc < global.nbproc && /* child */
Willy Tarreaue7597492015-04-20 11:36:57 +02002556 proc < LONGBITS && /* only the first 32/64 processes may be pinned */
Willy Tarreaufc6c0322012-11-16 16:12:27 +01002557 global.cpu_map[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02002558#ifdef __FreeBSD__
2559 cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(unsigned long), (void *)&global.cpu_map[proc]);
2560#else
Willy Tarreaufc6c0322012-11-16 16:12:27 +01002561 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map[proc]);
2562#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02002563#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02002564 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02002565 if (pidfd >= 0) {
2566 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
2567 close(pidfd);
2568 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02002569
2570 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02002571 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002572
Willy Tarreauedaff0a2015-05-01 17:01:08 +02002573 if (proc == global.nbproc) {
William Lallemand095ba4c2017-06-01 17:38:50 +02002574 if (global.mode & MODE_MWORKER) {
Willy Tarreauedaff0a2015-05-01 17:01:08 +02002575 protocol_unbind_all();
William Lallemand73b85e72017-06-01 17:38:51 +02002576 mworker_wait();
William Lallemand1499b9b2017-06-07 15:04:47 +02002577 /* should never get there */
2578 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02002579 }
William Lallemandcf4e4962017-06-08 19:05:48 +02002580#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00002581 ssl_free_dh();
2582#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02002583 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02002584 }
2585
William Lallemandcb11fd22017-06-01 17:38:52 +02002586 /* child must never use the atexit function */
2587 atexit_flag = 0;
2588
William Lallemand095ba4c2017-06-01 17:38:50 +02002589 /* Must chroot and setgid/setuid in the children */
2590 /* chroot if needed */
2591 if (global.chroot != NULL) {
2592 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
2593 Alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
2594 if (nb_oldpids)
2595 tell_old_pids(SIGTTIN);
2596 protocol_unbind_all();
2597 exit(1);
2598 }
2599 }
2600
2601 free(global.chroot);
2602 global.chroot = NULL;
2603
2604 /* setgid / setuid */
2605 if (global.gid) {
2606 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
2607 Warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
2608 " without 'uid'/'user' is generally useless.\n", argv[0]);
2609
2610 if (setgid(global.gid) == -1) {
2611 Alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
2612 protocol_unbind_all();
2613 exit(1);
2614 }
2615 }
2616
2617 if (global.uid && setuid(global.uid) == -1) {
2618 Alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
2619 protocol_unbind_all();
2620 exit(1);
2621 }
2622
William Lallemand7f80eb22017-05-26 18:19:55 +02002623 /* pass through every cli socket, and check if it's bound to
2624 * the current process and if it exposes listeners sockets.
2625 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
2626 * */
2627
2628 if (global.stats_fe) {
2629 struct bind_conf *bind_conf;
2630
2631 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
2632 if (bind_conf->level & ACCESS_FD_LISTENERS) {
2633 if (!bind_conf->bind_proc || bind_conf->bind_proc & (1UL << proc)) {
2634 global.tune.options |= GTUNE_SOCKET_TRANSFER;
2635 break;
2636 }
2637 }
2638 }
2639 }
2640
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002641 /* we might have to unbind some proxies from some processes */
2642 px = proxy;
2643 while (px != NULL) {
2644 if (px->bind_proc && px->state != PR_STSTOPPED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002645 if (!(px->bind_proc & (1UL << proc))) {
2646 if (global.tune.options & GTUNE_SOCKET_TRANSFER)
2647 zombify_proxy(px);
2648 else
2649 stop_proxy(px);
2650 }
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002651 }
2652 px = px->next;
2653 }
2654
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002655 /* we might have to unbind some peers sections from some processes */
2656 for (curpeers = peers; curpeers; curpeers = curpeers->next) {
2657 if (!curpeers->peers_fe)
2658 continue;
2659
2660 if (curpeers->peers_fe->bind_proc & (1UL << proc))
2661 continue;
2662
2663 stop_proxy(curpeers->peers_fe);
2664 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02002665 signal_unregister_handler(curpeers->sighandler);
2666 task_delete(curpeers->sync_task);
2667 task_free(curpeers->sync_task);
2668 curpeers->sync_task = NULL;
2669 task_free(curpeers->peers_fe->task);
2670 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002671 curpeers->peers_fe = NULL;
2672 }
2673
Willy Tarreaubaaee002006-06-26 02:48:02 +02002674 /* if we're NOT in QUIET mode, we should now close the 3 first FDs to ensure
2675 * that we can detach from the TTY. We MUST NOT do it in other cases since
2676 * it would have already be done, and 0-2 would have been affected to listening
2677 * sockets
2678 */
Willy Tarreau106cb762008-11-16 07:40:34 +01002679 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002680 /* detach from the tty */
2681 fclose(stdin); fclose(stdout); fclose(stderr);
Willy Tarreau106cb762008-11-16 07:40:34 +01002682 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002683 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
2684 }
2685 pid = getpid(); /* update child's pid */
2686 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02002687 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002688 }
2689
Baptiste Assmann26c6eb82017-02-02 23:14:51 +01002690 /* initialize structures for name resolution */
2691 if (!dns_init_resolvers(1))
2692 exit(1);
2693
William Lallemande20b6a62017-06-01 17:38:55 +02002694 if (global.mode & MODE_MWORKER)
2695 mworker_pipe_register(mworker_pipe);
2696
Willy Tarreaudd815982007-10-16 12:25:14 +02002697 protocol_enable_all();
Willy Tarreau4f60f162007-04-08 16:39:58 +02002698 /*
2699 * That's it : the central polling loop. Run until we stop.
2700 */
2701 run_poll_loop();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002702
Willy Tarreaubaaee002006-06-26 02:48:02 +02002703 /* Do some cleanup */
2704 deinit();
2705
2706 exit(0);
2707}
2708
2709
2710/*
2711 * Local variables:
2712 * c-indent-level: 8
2713 * c-basic-offset: 8
2714 * End:
2715 */