| /* |
| * HA-Proxy : High Availability-enabled HTTP/TCP proxy |
| * Copyright 2000-2016 Willy Tarreau <willy@haproxy.org>. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * Please refer to RFC2068 or RFC2616 for informations about HTTP protocol, and |
| * RFC2965 for informations about cookies usage. More generally, the IETF HTTP |
| * Working Group's web site should be consulted for protocol related changes : |
| * |
| * http://ftp.ics.uci.edu/pub/ietf/http/ |
| * |
| * Pending bugs (may be not fixed because never reproduced) : |
| * - solaris only : sometimes, an HTTP proxy with only a dispatch address causes |
| * the proxy to terminate (no core) if the client breaks the connection during |
| * the response. Seen on 1.1.8pre4, but never reproduced. May not be related to |
| * the snprintf() bug since requests were simple (GET / HTTP/1.0), but may be |
| * related to missing setsid() (fixed in 1.1.15) |
| * - a proxy with an invalid config will prevent the startup even if disabled. |
| * |
| * ChangeLog has moved to the CHANGELOG file. |
| * |
| */ |
| |
| #define _GNU_SOURCE |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <string.h> |
| #include <ctype.h> |
| #include <sys/time.h> |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| #include <netinet/tcp.h> |
| #include <netinet/in.h> |
| #include <arpa/inet.h> |
| #include <netdb.h> |
| #include <fcntl.h> |
| #include <errno.h> |
| #include <signal.h> |
| #include <stdarg.h> |
| #include <sys/resource.h> |
| #include <sys/wait.h> |
| #include <time.h> |
| #include <syslog.h> |
| #include <grp.h> |
| #ifdef USE_CPU_AFFINITY |
| #include <sched.h> |
| #endif |
| |
| #ifdef DEBUG_FULL |
| #include <assert.h> |
| #endif |
| |
| #include <common/appsession.h> |
| #include <common/base64.h> |
| #include <common/cfgparse.h> |
| #include <common/chunk.h> |
| #include <common/compat.h> |
| #include <common/config.h> |
| #include <common/defaults.h> |
| #include <common/errors.h> |
| #include <common/memory.h> |
| #include <common/mini-clist.h> |
| #include <common/regex.h> |
| #include <common/standard.h> |
| #include <common/time.h> |
| #include <common/uri_auth.h> |
| #include <common/version.h> |
| |
| #include <types/capture.h> |
| #include <types/global.h> |
| #include <types/proto_tcp.h> |
| #include <types/acl.h> |
| #include <types/peers.h> |
| |
| #include <proto/auth.h> |
| #include <proto/acl.h> |
| #include <proto/arg.h> |
| #include <proto/backend.h> |
| #include <proto/channel.h> |
| #include <proto/checks.h> |
| #include <proto/connection.h> |
| #include <proto/fd.h> |
| #include <proto/hdr_idx.h> |
| #include <proto/listener.h> |
| #include <proto/log.h> |
| #include <proto/pattern.h> |
| #include <proto/protocol.h> |
| #include <proto/proto_http.h> |
| #include <proto/proxy.h> |
| #include <proto/queue.h> |
| #include <proto/server.h> |
| #include <proto/session.h> |
| #include <proto/signal.h> |
| #include <proto/task.h> |
| |
| #ifdef CONFIG_HAP_CTTPROXY |
| #include <proto/cttproxy.h> |
| #endif |
| |
| #ifdef USE_OPENSSL |
| #include <proto/ssl_sock.h> |
| #endif |
| |
| /*********************************************************************/ |
| |
| extern const struct comp_algo comp_algos[]; |
| |
| /*********************************************************************/ |
| |
| /* list of config files */ |
| static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles); |
| int pid; /* current process id */ |
| int relative_pid = 1; /* process id starting at 1 */ |
| |
| /* global options */ |
| struct global global = { |
| .nbproc = 1, |
| .req_count = 0, |
| .logsrvs = LIST_HEAD_INIT(global.logsrvs), |
| #ifdef DEFAULT_MAXZLIBMEM |
| .maxzlibmem = DEFAULT_MAXZLIBMEM * 1024U * 1024U, |
| #else |
| .maxzlibmem = 0, |
| #endif |
| .comp_rate_lim = 0, |
| .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED, |
| .unix_bind = { |
| .ux = { |
| .uid = -1, |
| .gid = -1, |
| .mode = 0, |
| } |
| }, |
| .tune = { |
| .bufsize = BUFSIZE, |
| .maxrewrite = MAXREWRITE, |
| .chksize = BUFSIZE, |
| #ifdef USE_OPENSSL |
| .sslcachesize = SSLCACHESIZE, |
| .ssl_default_dh_param = SSL_DEFAULT_DH_PARAM, |
| #ifdef DEFAULT_SSL_MAX_RECORD |
| .ssl_max_record = DEFAULT_SSL_MAX_RECORD, |
| #endif |
| #endif |
| #ifdef USE_ZLIB |
| .zlibmemlevel = 8, |
| .zlibwindowsize = MAX_WBITS, |
| #endif |
| .comp_maxlevel = 1, |
| #ifdef DEFAULT_IDLE_TIMER |
| .idle_timer = DEFAULT_IDLE_TIMER, |
| #else |
| .idle_timer = 1000, /* 1 second */ |
| #endif |
| }, |
| #ifdef USE_OPENSSL |
| #ifdef DEFAULT_MAXSSLCONN |
| .maxsslconn = DEFAULT_MAXSSLCONN, |
| #endif |
| #endif |
| /* others NULL OK */ |
| }; |
| |
| /*********************************************************************/ |
| |
| int stopping; /* non zero means stopping in progress */ |
| int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */ |
| |
| /* Here we store informations about the pids of the processes we may pause |
| * or kill. We will send them a signal every 10 ms until we can bind to all |
| * our ports. With 200 retries, that's about 2 seconds. |
| */ |
| #define MAX_START_RETRIES 200 |
| static int *oldpids = NULL; |
| static int oldpids_sig; /* use USR1 or TERM */ |
| |
| /* this is used to drain data, and as a temporary buffer for sprintf()... */ |
| struct chunk trash = { }; |
| |
| /* this buffer is always the same size as standard buffers and is used for |
| * swapping data inside a buffer. |
| */ |
| char *swap_buffer = NULL; |
| |
| int nb_oldpids = 0; |
| const int zero = 0; |
| const int one = 1; |
| const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 }; |
| |
| char hostname[MAX_HOSTNAME_LEN]; |
| char localpeer[MAX_HOSTNAME_LEN]; |
| |
| /* used from everywhere just to drain results we don't want to read and which |
| * recent versions of gcc increasingly and annoyingly complain about. |
| */ |
| int shut_your_big_mouth_gcc_int = 0; |
| |
| /* list of the temporarily limited listeners because of lack of resource */ |
| struct list global_listener_queue = LIST_HEAD_INIT(global_listener_queue); |
| struct task *global_listener_queue_task; |
| static struct task *manage_global_listener_queue(struct task *t); |
| |
| /* bitfield of a few warnings to emit just once (WARN_*) */ |
| unsigned int warned = 0; |
| |
| /*********************************************************************/ |
| /* general purpose functions ***************************************/ |
| /*********************************************************************/ |
| |
| void display_version() |
| { |
| printf("HA-Proxy version " HAPROXY_VERSION " " HAPROXY_DATE"\n"); |
| printf("Copyright 2000-2016 Willy Tarreau <willy@haproxy.org>\n\n"); |
| } |
| |
| void display_build_opts() |
| { |
| printf("Build options :" |
| #ifdef BUILD_TARGET |
| "\n TARGET = " BUILD_TARGET |
| #endif |
| #ifdef BUILD_CPU |
| "\n CPU = " BUILD_CPU |
| #endif |
| #ifdef BUILD_CC |
| "\n CC = " BUILD_CC |
| #endif |
| #ifdef BUILD_CFLAGS |
| "\n CFLAGS = " BUILD_CFLAGS |
| #endif |
| #ifdef BUILD_OPTIONS |
| "\n OPTIONS = " BUILD_OPTIONS |
| #endif |
| "\n\nDefault settings :" |
| "\n maxconn = %d, bufsize = %d, maxrewrite = %d, maxpollevents = %d" |
| "\n\n", |
| DEFAULT_MAXCONN, BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS); |
| |
| printf("Encrypted password support via crypt(3): " |
| #ifdef CONFIG_HAP_CRYPT |
| "yes" |
| #else |
| "no" |
| #endif |
| "\n"); |
| |
| #ifdef USE_ZLIB |
| printf("Built with zlib version : " ZLIB_VERSION "\n"); |
| #else /* USE_ZLIB */ |
| printf("Built without zlib support (USE_ZLIB not set)\n"); |
| #endif |
| printf("Compression algorithms supported :"); |
| { |
| int i; |
| |
| for (i = 0; comp_algos[i].name; i++) { |
| printf("%s %s", (i == 0 ? "" : ","), comp_algos[i].name); |
| } |
| if (i == 0) { |
| printf("none"); |
| } |
| } |
| printf("\n"); |
| |
| #ifdef USE_OPENSSL |
| printf("Built with OpenSSL version : " OPENSSL_VERSION_TEXT "\n"); |
| printf("Running on OpenSSL version : %s%s\n", |
| SSLeay_version(SSLEAY_VERSION), |
| ((OPENSSL_VERSION_NUMBER ^ SSLeay()) >> 8) ? " (VERSIONS DIFFER!)" : ""); |
| printf("OpenSSL library supports TLS extensions : " |
| #if OPENSSL_VERSION_NUMBER < 0x00907000L |
| "no (library version too old)" |
| #elif defined(OPENSSL_NO_TLSEXT) |
| "no (disabled via OPENSSL_NO_TLSEXT)" |
| #else |
| "yes" |
| #endif |
| "\n"); |
| printf("OpenSSL library supports SNI : " |
| #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
| "yes" |
| #else |
| #ifdef OPENSSL_NO_TLSEXT |
| "no (because of OPENSSL_NO_TLSEXT)" |
| #else |
| "no (version might be too old, 0.9.8f min needed)" |
| #endif |
| #endif |
| "\n"); |
| printf("OpenSSL library supports prefer-server-ciphers : " |
| #ifdef SSL_OP_CIPHER_SERVER_PREFERENCE |
| "yes" |
| #else |
| "no (0.9.7 or later needed)" |
| #endif |
| "\n"); |
| #else /* USE_OPENSSL */ |
| printf("Built without OpenSSL support (USE_OPENSSL not set)\n"); |
| #endif |
| |
| #ifdef USE_PCRE |
| printf("Built with PCRE version : %s", pcre_version()); |
| printf("\nPCRE library supports JIT : "); |
| #ifdef USE_PCRE_JIT |
| { |
| int r; |
| pcre_config(PCRE_CONFIG_JIT, &r); |
| if (r) |
| printf("yes"); |
| else |
| printf("no (libpcre build without JIT?)"); |
| } |
| #else |
| printf("no (USE_PCRE_JIT not set)"); |
| #endif |
| printf("\n"); |
| #else |
| printf("Built without PCRE support (using libc's regex instead)\n"); |
| #endif |
| |
| #if defined(CONFIG_HAP_TRANSPARENT) || defined(CONFIG_HAP_CTTPROXY) |
| printf("Built with transparent proxy support using:" |
| #if defined(CONFIG_HAP_CTTPROXY) |
| " CTTPROXY" |
| #endif |
| #if defined(IP_TRANSPARENT) |
| " IP_TRANSPARENT" |
| #endif |
| #if defined(IPV6_TRANSPARENT) |
| " IPV6_TRANSPARENT" |
| #endif |
| #if defined(IP_FREEBIND) |
| " IP_FREEBIND" |
| #endif |
| #if defined(IP_BINDANY) |
| " IP_BINDANY" |
| #endif |
| #if defined(IPV6_BINDANY) |
| " IPV6_BINDANY" |
| #endif |
| #if defined(SO_BINDANY) |
| " SO_BINDANY" |
| #endif |
| "\n"); |
| #endif |
| putchar('\n'); |
| |
| list_pollers(stdout); |
| putchar('\n'); |
| } |
| |
| /* |
| * This function prints the command line usage and exits |
| */ |
| void usage(char *name) |
| { |
| display_version(); |
| fprintf(stderr, |
| "Usage : %s [-f <cfgfile>]* [ -vdV" |
| "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n" |
| " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ]\n" |
| " -v displays version ; -vv shows known build options.\n" |
| " -d enters debug mode ; -db only disables background mode.\n" |
| " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n" |
| " -V enters verbose mode (disables quiet mode)\n" |
| " -D goes daemon ; -C changes to <dir> before loading files.\n" |
| " -q quiet mode : don't display messages\n" |
| " -c check mode : only check config files and exit\n" |
| " -n sets the maximum total # of connections (%d)\n" |
| " -m limits the usable amount of memory (in MB)\n" |
| " -N sets the default, per-proxy maximum # of connections (%d)\n" |
| " -L set local peer name (default to hostname)\n" |
| " -p writes pids of all children to this file\n" |
| #if defined(ENABLE_EPOLL) |
| " -de disables epoll() usage even when available\n" |
| #endif |
| #if defined(ENABLE_KQUEUE) |
| " -dk disables kqueue() usage even when available\n" |
| #endif |
| #if defined(ENABLE_POLL) |
| " -dp disables poll() usage even when available\n" |
| #endif |
| #if defined(CONFIG_HAP_LINUX_SPLICE) |
| " -dS disables splice usage (broken on old kernels)\n" |
| #endif |
| #if defined(USE_GETADDRINFO) |
| " -dG disables getaddrinfo() usage\n" |
| #endif |
| " -dV disables SSL verify on servers side\n" |
| " -sf/-st [pid ]* finishes/terminates old pids. Must be last arguments.\n" |
| "\n", |
| name, DEFAULT_MAXCONN, cfg_maxpconn); |
| exit(1); |
| } |
| |
| |
| |
| /*********************************************************************/ |
| /* more specific functions ***************************************/ |
| /*********************************************************************/ |
| |
| /* |
| * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts |
| * a signal zero to all subscribers. This means that it's as easy as |
| * subscribing to signal 0 to get informed about an imminent shutdown. |
| */ |
| void sig_soft_stop(struct sig_handler *sh) |
| { |
| soft_stop(); |
| signal_unregister_handler(sh); |
| pool_gc2(); |
| } |
| |
| /* |
| * upon SIGTTOU, we pause everything |
| */ |
| void sig_pause(struct sig_handler *sh) |
| { |
| pause_proxies(); |
| pool_gc2(); |
| } |
| |
| /* |
| * upon SIGTTIN, let's have a soft stop. |
| */ |
| void sig_listen(struct sig_handler *sh) |
| { |
| resume_proxies(); |
| } |
| |
| /* |
| * this function dumps every server's state when the process receives SIGHUP. |
| */ |
| void sig_dump_state(struct sig_handler *sh) |
| { |
| struct proxy *p = proxy; |
| |
| Warning("SIGHUP received, dumping servers states.\n"); |
| while (p) { |
| struct server *s = p->srv; |
| |
| send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id); |
| while (s) { |
| chunk_printf(&trash, |
| "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.", |
| p->id, s->id, |
| (s->state != SRV_ST_STOPPED) ? "UP" : "DOWN", |
| s->cur_sess, s->nbpend, s->counters.cum_sess); |
| Warning("%s\n", trash.str); |
| send_log(p, LOG_NOTICE, "%s\n", trash.str); |
| s = s->next; |
| } |
| |
| /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */ |
| if (!p->srv) { |
| chunk_printf(&trash, |
| "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.", |
| p->id, |
| p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn); |
| } else if (p->srv_act == 0) { |
| chunk_printf(&trash, |
| "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.", |
| p->id, |
| (p->srv_bck) ? "is running on backup servers" : "has no server available", |
| p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn); |
| } else { |
| chunk_printf(&trash, |
| "SIGHUP: Proxy %s has %d active servers and %d backup servers available." |
| " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.", |
| p->id, p->srv_act, p->srv_bck, |
| p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn); |
| } |
| Warning("%s\n", trash.str); |
| send_log(p, LOG_NOTICE, "%s\n", trash.str); |
| |
| p = p->next; |
| } |
| } |
| |
| void dump(struct sig_handler *sh) |
| { |
| /* dump memory usage then free everything possible */ |
| dump_pools(); |
| pool_gc2(); |
| } |
| |
| /* |
| * This function initializes all the necessary variables. It only returns |
| * if everything is OK. If something fails, it exits. |
| */ |
| void init(int argc, char **argv) |
| { |
| int arg_mode = 0; /* MODE_DEBUG, ... */ |
| char *tmp; |
| char *cfg_pidfile = NULL; |
| int err_code = 0; |
| struct wordlist *wl; |
| char *progname; |
| char *change_dir = NULL; |
| |
| chunk_init(&trash, malloc(global.tune.bufsize), global.tune.bufsize); |
| alloc_trash_buffers(global.tune.bufsize); |
| |
| /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate |
| * the string in case of truncation, and at least FreeBSD appears not to do |
| * it. |
| */ |
| memset(hostname, 0, sizeof(hostname)); |
| gethostname(hostname, sizeof(hostname) - 1); |
| memset(localpeer, 0, sizeof(localpeer)); |
| memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1); |
| |
| /* |
| * Initialize the previously static variables. |
| */ |
| |
| totalconn = actconn = maxfd = listeners = stopping = 0; |
| |
| |
| #ifdef HAPROXY_MEMMAX |
| global.rlimit_memmax = HAPROXY_MEMMAX; |
| #endif |
| |
| tzset(); |
| tv_update_date(-1,-1); |
| start_date = now; |
| |
| srandom(now_ms - getpid()); |
| |
| signal_init(); |
| if (init_acl() != 0) |
| exit(1); |
| init_task(); |
| init_session(); |
| init_connection(); |
| /* warning, we init buffers later */ |
| init_pendconn(); |
| init_proto_http(); |
| |
| global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */ |
| #if defined(ENABLE_POLL) |
| global.tune.options |= GTUNE_USE_POLL; |
| #endif |
| #if defined(ENABLE_EPOLL) |
| global.tune.options |= GTUNE_USE_EPOLL; |
| #endif |
| #if defined(ENABLE_KQUEUE) |
| global.tune.options |= GTUNE_USE_KQUEUE; |
| #endif |
| #if defined(CONFIG_HAP_LINUX_SPLICE) |
| global.tune.options |= GTUNE_USE_SPLICE; |
| #endif |
| #if defined(USE_GETADDRINFO) |
| global.tune.options |= GTUNE_USE_GAI; |
| #endif |
| |
| pid = getpid(); |
| progname = *argv; |
| while ((tmp = strchr(progname, '/')) != NULL) |
| progname = tmp + 1; |
| |
| /* the process name is used for the logs only */ |
| global.log_tag = strdup(progname); |
| |
| argc--; argv++; |
| while (argc > 0) { |
| char *flag; |
| |
| if (**argv == '-') { |
| flag = *argv+1; |
| |
| /* 1 arg */ |
| if (*flag == 'v') { |
| display_version(); |
| if (flag[1] == 'v') /* -vv */ |
| display_build_opts(); |
| exit(0); |
| } |
| #if defined(ENABLE_EPOLL) |
| else if (*flag == 'd' && flag[1] == 'e') |
| global.tune.options &= ~GTUNE_USE_EPOLL; |
| #endif |
| #if defined(ENABLE_POLL) |
| else if (*flag == 'd' && flag[1] == 'p') |
| global.tune.options &= ~GTUNE_USE_POLL; |
| #endif |
| #if defined(ENABLE_KQUEUE) |
| else if (*flag == 'd' && flag[1] == 'k') |
| global.tune.options &= ~GTUNE_USE_KQUEUE; |
| #endif |
| #if defined(CONFIG_HAP_LINUX_SPLICE) |
| else if (*flag == 'd' && flag[1] == 'S') |
| global.tune.options &= ~GTUNE_USE_SPLICE; |
| #endif |
| #if defined(USE_GETADDRINFO) |
| else if (*flag == 'd' && flag[1] == 'G') |
| global.tune.options &= ~GTUNE_USE_GAI; |
| #endif |
| else if (*flag == 'd' && flag[1] == 'V') |
| global.ssl_server_verify = SSL_SERVER_VERIFY_NONE; |
| else if (*flag == 'V') |
| arg_mode |= MODE_VERBOSE; |
| else if (*flag == 'd' && flag[1] == 'b') |
| arg_mode |= MODE_FOREGROUND; |
| else if (*flag == 'd' && flag[1] == 'M') |
| mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P'; |
| else if (*flag == 'd') |
| arg_mode |= MODE_DEBUG; |
| else if (*flag == 'c') |
| arg_mode |= MODE_CHECK; |
| else if (*flag == 'D') { |
| arg_mode |= MODE_DAEMON; |
| if (flag[1] == 's') /* -Ds */ |
| arg_mode |= MODE_SYSTEMD; |
| } |
| else if (*flag == 'q') |
| arg_mode |= MODE_QUIET; |
| else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) { |
| /* list of pids to finish ('f') or terminate ('t') */ |
| |
| if (flag[1] == 'f') |
| oldpids_sig = SIGUSR1; /* finish then exit */ |
| else |
| oldpids_sig = SIGTERM; /* terminate immediately */ |
| argv++; argc--; |
| |
| if (argc > 0) { |
| oldpids = calloc(argc, sizeof(int)); |
| while (argc > 0) { |
| oldpids[nb_oldpids] = atol(*argv); |
| if (oldpids[nb_oldpids] <= 0) |
| usage(progname); |
| argc--; argv++; |
| nb_oldpids++; |
| } |
| } |
| } |
| else { /* >=2 args */ |
| argv++; argc--; |
| if (argc == 0) |
| usage(progname); |
| |
| switch (*flag) { |
| case 'C' : change_dir = *argv; break; |
| case 'n' : cfg_maxconn = atol(*argv); break; |
| case 'm' : global.rlimit_memmax = atol(*argv); break; |
| case 'N' : cfg_maxpconn = atol(*argv); break; |
| case 'L' : strncpy(localpeer, *argv, sizeof(localpeer) - 1); break; |
| case 'f' : |
| wl = (struct wordlist *)calloc(1, sizeof(*wl)); |
| if (!wl) { |
| Alert("Cannot load configuration file %s : out of memory.\n", *argv); |
| exit(1); |
| } |
| wl->s = *argv; |
| LIST_ADDQ(&cfg_cfgfiles, &wl->list); |
| break; |
| case 'p' : cfg_pidfile = *argv; break; |
| default: usage(progname); |
| } |
| } |
| } |
| else |
| usage(progname); |
| argv++; argc--; |
| } |
| |
| global.mode = MODE_STARTING | /* during startup, we want most of the alerts */ |
| (arg_mode & (MODE_DAEMON | MODE_SYSTEMD | MODE_FOREGROUND | MODE_VERBOSE |
| | MODE_QUIET | MODE_CHECK | MODE_DEBUG)); |
| |
| if (LIST_ISEMPTY(&cfg_cfgfiles)) |
| usage(progname); |
| |
| if (change_dir && chdir(change_dir) < 0) { |
| Alert("Could not change to directory %s : %s\n", change_dir, strerror(errno)); |
| exit(1); |
| } |
| |
| have_appsession = 0; |
| global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */ |
| |
| init_default_instance(); |
| |
| list_for_each_entry(wl, &cfg_cfgfiles, list) { |
| int ret; |
| |
| ret = readcfgfile(wl->s); |
| if (ret == -1) { |
| Alert("Could not open configuration file %s : %s\n", |
| wl->s, strerror(errno)); |
| exit(1); |
| } |
| if (ret & (ERR_ABORT|ERR_FATAL)) |
| Alert("Error(s) found in configuration file : %s\n", wl->s); |
| err_code |= ret; |
| if (err_code & ERR_ABORT) |
| exit(1); |
| } |
| |
| pattern_finalize_config(); |
| |
| err_code |= check_config_validity(); |
| if (err_code & (ERR_ABORT|ERR_FATAL)) { |
| Alert("Fatal errors found in configuration.\n"); |
| exit(1); |
| } |
| |
| if (global.mode & MODE_CHECK) { |
| struct peers *pr; |
| struct proxy *px; |
| |
| for (pr = peers; pr; pr = pr->next) |
| if (pr->peers_fe) |
| break; |
| |
| for (px = proxy; px; px = px->next) |
| if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners)) |
| break; |
| |
| if (pr || px) { |
| /* At least one peer or one listener has been found */ |
| qfprintf(stdout, "Configuration file is valid\n"); |
| exit(0); |
| } |
| qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n"); |
| exit(2); |
| } |
| |
| global_listener_queue_task = task_new(); |
| if (!global_listener_queue_task) { |
| Alert("Out of memory when initializing global task\n"); |
| exit(1); |
| } |
| /* very simple initialization, users will queue the task if needed */ |
| global_listener_queue_task->context = NULL; /* not even a context! */ |
| global_listener_queue_task->process = manage_global_listener_queue; |
| global_listener_queue_task->expire = TICK_ETERNITY; |
| |
| /* now we know the buffer size, we can initialize the channels and buffers */ |
| init_channel(); |
| init_buffer(); |
| |
| if (have_appsession) |
| appsession_init(); |
| |
| if (start_checks() < 0) |
| exit(1); |
| |
| if (cfg_maxconn > 0) |
| global.maxconn = cfg_maxconn; |
| |
| if (cfg_pidfile) { |
| free(global.pidfile); |
| global.pidfile = strdup(cfg_pidfile); |
| } |
| |
| if (global.maxconn == 0) |
| global.maxconn = DEFAULT_MAXCONN; |
| |
| if (!global.maxpipes) { |
| /* maxpipes not specified. Count how many frontends and backends |
| * may be using splicing, and bound that to maxconn. |
| */ |
| struct proxy *cur; |
| int nbfe = 0, nbbe = 0; |
| |
| for (cur = proxy; cur; cur = cur->next) { |
| if (cur->options2 & (PR_O2_SPLIC_ANY)) { |
| if (cur->cap & PR_CAP_FE) |
| nbfe += cur->maxconn; |
| if (cur->cap & PR_CAP_BE) |
| nbbe += cur->fullconn ? cur->fullconn : global.maxconn; |
| } |
| } |
| global.maxpipes = MAX(nbfe, nbbe); |
| if (global.maxpipes > global.maxconn) |
| global.maxpipes = global.maxconn; |
| global.maxpipes /= 4; |
| } |
| |
| |
| global.hardmaxconn = global.maxconn; /* keep this max value */ |
| global.maxsock += global.maxconn * 2; /* each connection needs two sockets */ |
| global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */ |
| |
| if (global.stats_fe) |
| global.maxsock += global.stats_fe->maxconn; |
| |
| if (peers) { |
| /* peers also need to bypass global maxconn */ |
| struct peers *p = peers; |
| |
| for (p = peers; p; p = p->next) |
| if (p->peers_fe) |
| global.maxsock += p->peers_fe->maxconn; |
| } |
| |
| if (global.tune.maxpollevents <= 0) |
| global.tune.maxpollevents = MAX_POLL_EVENTS; |
| |
| if (global.tune.recv_enough == 0) |
| global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH; |
| |
| if (global.tune.maxrewrite >= global.tune.bufsize / 2) |
| global.tune.maxrewrite = global.tune.bufsize / 2; |
| |
| if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) { |
| /* command line debug mode inhibits configuration mode */ |
| global.mode &= ~(MODE_DAEMON | MODE_SYSTEMD | MODE_QUIET); |
| global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)); |
| } |
| |
| if (arg_mode & (MODE_DAEMON | MODE_SYSTEMD)) { |
| /* command line daemon mode inhibits foreground and debug modes mode */ |
| global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND); |
| global.mode |= (arg_mode & (MODE_DAEMON | MODE_SYSTEMD)); |
| } |
| |
| global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE)); |
| |
| if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_SYSTEMD | MODE_QUIET))) { |
| Warning("<debug> mode incompatible with <quiet>, <daemon> and <systemd>. Keeping <debug> only.\n"); |
| global.mode &= ~(MODE_DAEMON | MODE_SYSTEMD | MODE_QUIET); |
| } |
| |
| if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_SYSTEMD))) { |
| if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG))) |
| Warning("<nbproc> is only meaningful in daemon mode. Setting limit to 1 process.\n"); |
| global.nbproc = 1; |
| } |
| |
| if (global.nbproc < 1) |
| global.nbproc = 1; |
| |
| swap_buffer = (char *)calloc(1, global.tune.bufsize); |
| get_http_auth_buff = (char *)calloc(1, global.tune.bufsize); |
| static_table_key = calloc(1, sizeof(*static_table_key) + global.tune.bufsize); |
| |
| fdinfo = (struct fdinfo *)calloc(1, |
| sizeof(struct fdinfo) * (global.maxsock)); |
| fdtab = (struct fdtab *)calloc(1, |
| sizeof(struct fdtab) * (global.maxsock)); |
| /* |
| * Note: we could register external pollers here. |
| * Built-in pollers have been registered before main(). |
| */ |
| |
| if (!(global.tune.options & GTUNE_USE_KQUEUE)) |
| disable_poller("kqueue"); |
| |
| if (!(global.tune.options & GTUNE_USE_EPOLL)) |
| disable_poller("epoll"); |
| |
| if (!(global.tune.options & GTUNE_USE_POLL)) |
| disable_poller("poll"); |
| |
| if (!(global.tune.options & GTUNE_USE_SELECT)) |
| disable_poller("select"); |
| |
| /* Note: we could disable any poller by name here */ |
| |
| if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) |
| list_pollers(stderr); |
| |
| if (!init_pollers()) { |
| Alert("No polling mechanism available.\n" |
| " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n" |
| " is too low on this platform to support maxconn and the number of listeners\n" |
| " and servers. You should rebuild haproxy specifying your system using TARGET=\n" |
| " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n" |
| " global maxconn setting to accommodate the system's limitation. For reference,\n" |
| " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n" |
| " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n" |
| " check build settings using 'haproxy -vv'.\n\n", |
| FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2); |
| exit(1); |
| } |
| if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) { |
| printf("Using %s() as the polling mechanism.\n", cur_poller.name); |
| } |
| |
| if (!global.node) |
| global.node = strdup(hostname); |
| |
| } |
| |
| static void deinit_acl_cond(struct acl_cond *cond) |
| { |
| struct acl_term_suite *suite, *suiteb; |
| struct acl_term *term, *termb; |
| |
| if (!cond) |
| return; |
| |
| list_for_each_entry_safe(suite, suiteb, &cond->suites, list) { |
| list_for_each_entry_safe(term, termb, &suite->terms, list) { |
| LIST_DEL(&term->list); |
| free(term); |
| } |
| LIST_DEL(&suite->list); |
| free(suite); |
| } |
| |
| free(cond); |
| } |
| |
| static void deinit_tcp_rules(struct list *rules) |
| { |
| struct tcp_rule *trule, *truleb; |
| |
| list_for_each_entry_safe(trule, truleb, rules, list) { |
| LIST_DEL(&trule->list); |
| deinit_acl_cond(trule->cond); |
| free(trule); |
| } |
| } |
| |
| static void deinit_sample_arg(struct arg *p) |
| { |
| struct arg *p_back = p; |
| |
| if (!p) |
| return; |
| |
| while (p->type != ARGT_STOP) { |
| if (p->type == ARGT_STR || p->unresolved) { |
| free(p->data.str.str); |
| p->data.str.str = NULL; |
| p->unresolved = 0; |
| } |
| p++; |
| } |
| |
| if (p_back != empty_arg_list) |
| free(p_back); |
| } |
| |
| static void deinit_stick_rules(struct list *rules) |
| { |
| struct sticking_rule *rule, *ruleb; |
| |
| list_for_each_entry_safe(rule, ruleb, rules, list) { |
| LIST_DEL(&rule->list); |
| deinit_acl_cond(rule->cond); |
| if (rule->expr) { |
| struct sample_conv_expr *conv_expr, *conv_exprb; |
| list_for_each_entry_safe(conv_expr, conv_exprb, &rule->expr->conv_exprs, list) |
| deinit_sample_arg(conv_expr->arg_p); |
| deinit_sample_arg(rule->expr->arg_p); |
| free(rule->expr); |
| } |
| free(rule); |
| } |
| } |
| |
| void deinit(void) |
| { |
| struct proxy *p = proxy, *p0; |
| struct cap_hdr *h,*h_next; |
| struct server *s,*s_next; |
| struct listener *l,*l_next; |
| struct acl_cond *cond, *condb; |
| struct hdr_exp *exp, *expb; |
| struct acl *acl, *aclb; |
| struct switching_rule *rule, *ruleb; |
| struct server_rule *srule, *sruleb; |
| struct redirect_rule *rdr, *rdrb; |
| struct wordlist *wl, *wlb; |
| struct cond_wordlist *cwl, *cwlb; |
| struct uri_auth *uap, *ua = NULL; |
| struct logsrv *log, *logb; |
| struct logformat_node *lf, *lfb; |
| struct bind_conf *bind_conf, *bind_back; |
| int i; |
| |
| deinit_signals(); |
| while (p) { |
| free(p->conf.file); |
| free(p->id); |
| free(p->check_req); |
| free(p->cookie_name); |
| free(p->cookie_domain); |
| free(p->url_param_name); |
| free(p->capture_name); |
| free(p->monitor_uri); |
| free(p->rdp_cookie_name); |
| if (p->conf.logformat_string != default_http_log_format && |
| p->conf.logformat_string != default_tcp_log_format && |
| p->conf.logformat_string != clf_http_log_format) |
| free(p->conf.logformat_string); |
| |
| free(p->conf.lfs_file); |
| free(p->conf.uniqueid_format_string); |
| free(p->conf.uif_file); |
| free(p->lbprm.map.srv); |
| |
| for (i = 0; i < HTTP_ERR_SIZE; i++) |
| chunk_destroy(&p->errmsg[i]); |
| |
| list_for_each_entry_safe(cwl, cwlb, &p->req_add, list) { |
| LIST_DEL(&cwl->list); |
| free(cwl->s); |
| free(cwl); |
| } |
| |
| list_for_each_entry_safe(cwl, cwlb, &p->rsp_add, list) { |
| LIST_DEL(&cwl->list); |
| free(cwl->s); |
| free(cwl); |
| } |
| |
| list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) { |
| LIST_DEL(&cond->list); |
| prune_acl_cond(cond); |
| free(cond); |
| } |
| |
| for (exp = p->req_exp; exp != NULL; ) { |
| if (exp->preg) { |
| regex_free(exp->preg); |
| free(exp->preg); |
| } |
| |
| if (exp->replace && exp->action != ACT_SETBE) |
| free((char *)exp->replace); |
| expb = exp; |
| exp = exp->next; |
| free(expb); |
| } |
| |
| for (exp = p->rsp_exp; exp != NULL; ) { |
| if (exp->preg) { |
| regex_free(exp->preg); |
| free(exp->preg); |
| } |
| |
| if (exp->replace && exp->action != ACT_SETBE) |
| free((char *)exp->replace); |
| expb = exp; |
| exp = exp->next; |
| free(expb); |
| } |
| |
| /* build a list of unique uri_auths */ |
| if (!ua) |
| ua = p->uri_auth; |
| else { |
| /* check if p->uri_auth is unique */ |
| for (uap = ua; uap; uap=uap->next) |
| if (uap == p->uri_auth) |
| break; |
| |
| if (!uap && p->uri_auth) { |
| /* add it, if it is */ |
| p->uri_auth->next = ua; |
| ua = p->uri_auth; |
| } |
| } |
| |
| list_for_each_entry_safe(acl, aclb, &p->acl, list) { |
| LIST_DEL(&acl->list); |
| prune_acl(acl); |
| free(acl); |
| } |
| |
| list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) { |
| LIST_DEL(&srule->list); |
| prune_acl_cond(srule->cond); |
| free(srule->cond); |
| free(srule); |
| } |
| |
| list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) { |
| LIST_DEL(&rule->list); |
| if (rule->cond) { |
| prune_acl_cond(rule->cond); |
| free(rule->cond); |
| } |
| free(rule); |
| } |
| |
| list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) { |
| LIST_DEL(&rdr->list); |
| if (rdr->cond) { |
| prune_acl_cond(rdr->cond); |
| free(rdr->cond); |
| } |
| free(rdr->rdr_str); |
| list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) { |
| LIST_DEL(&lf->list); |
| free(lf); |
| } |
| free(rdr); |
| } |
| |
| list_for_each_entry_safe(log, logb, &p->logsrvs, list) { |
| LIST_DEL(&log->list); |
| free(log); |
| } |
| |
| list_for_each_entry_safe(lf, lfb, &p->logformat, list) { |
| LIST_DEL(&lf->list); |
| free(lf); |
| } |
| |
| deinit_tcp_rules(&p->tcp_req.inspect_rules); |
| deinit_tcp_rules(&p->tcp_req.l4_rules); |
| |
| deinit_stick_rules(&p->storersp_rules); |
| deinit_stick_rules(&p->sticking_rules); |
| |
| free(p->appsession_name); |
| |
| h = p->req_cap; |
| while (h) { |
| h_next = h->next; |
| free(h->name); |
| pool_destroy2(h->pool); |
| free(h); |
| h = h_next; |
| }/* end while(h) */ |
| |
| h = p->rsp_cap; |
| while (h) { |
| h_next = h->next; |
| free(h->name); |
| pool_destroy2(h->pool); |
| free(h); |
| h = h_next; |
| }/* end while(h) */ |
| |
| s = p->srv; |
| while (s) { |
| s_next = s->next; |
| |
| if (s->check.task) { |
| task_delete(s->check.task); |
| task_free(s->check.task); |
| } |
| if (s->agent.task) { |
| task_delete(s->agent.task); |
| task_free(s->agent.task); |
| } |
| |
| if (s->warmup) { |
| task_delete(s->warmup); |
| task_free(s->warmup); |
| } |
| |
| free(s->id); |
| free(s->cookie); |
| free(s->check.bi); |
| free(s->check.bo); |
| free(s->agent.bi); |
| free(s->agent.bo); |
| free(s); |
| s = s_next; |
| }/* end while(s) */ |
| |
| list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) { |
| unbind_listener(l); |
| delete_listener(l); |
| LIST_DEL(&l->by_fe); |
| LIST_DEL(&l->by_bind); |
| free(l->name); |
| free(l->counters); |
| free(l); |
| } |
| |
| /* Release unused SSL configs. */ |
| list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) { |
| #ifdef USE_OPENSSL |
| ssl_sock_free_all_ctx(bind_conf); |
| free(bind_conf->ca_file); |
| free(bind_conf->ciphers); |
| free(bind_conf->ecdhe); |
| free(bind_conf->crl_file); |
| #endif /* USE_OPENSSL */ |
| free(bind_conf->file); |
| free(bind_conf->arg); |
| LIST_DEL(&bind_conf->by_fe); |
| free(bind_conf); |
| } |
| |
| free(p->desc); |
| free(p->fwdfor_hdr_name); |
| |
| free_http_req_rules(&p->http_req_rules); |
| free_http_res_rules(&p->http_res_rules); |
| free(p->task); |
| |
| pool_destroy2(p->req_cap_pool); |
| pool_destroy2(p->rsp_cap_pool); |
| pool_destroy2(p->table.pool); |
| |
| p0 = p; |
| p = p->next; |
| free(p0); |
| }/* end while(p) */ |
| |
| while (ua) { |
| uap = ua; |
| ua = ua->next; |
| |
| free(uap->uri_prefix); |
| free(uap->auth_realm); |
| free(uap->node); |
| free(uap->desc); |
| |
| userlist_free(uap->userlist); |
| free_http_req_rules(&uap->http_req_rules); |
| |
| free(uap); |
| } |
| |
| userlist_free(userlist); |
| |
| protocol_unbind_all(); |
| |
| free(global.log_send_hostname); global.log_send_hostname = NULL; |
| free(global.log_tag); global.log_tag = NULL; |
| free(global.chroot); global.chroot = NULL; |
| free(global.pidfile); global.pidfile = NULL; |
| free(global.node); global.node = NULL; |
| free(global.desc); global.desc = NULL; |
| free(fdinfo); fdinfo = NULL; |
| free(fdtab); fdtab = NULL; |
| free(oldpids); oldpids = NULL; |
| free(global_listener_queue_task); global_listener_queue_task = NULL; |
| |
| list_for_each_entry_safe(log, logb, &global.logsrvs, list) { |
| LIST_DEL(&log->list); |
| free(log); |
| } |
| list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) { |
| LIST_DEL(&wl->list); |
| free(wl); |
| } |
| |
| pool_destroy2(pool2_session); |
| pool_destroy2(pool2_connection); |
| pool_destroy2(pool2_buffer); |
| pool_destroy2(pool2_channel); |
| pool_destroy2(pool2_requri); |
| pool_destroy2(pool2_task); |
| pool_destroy2(pool2_capture); |
| pool_destroy2(pool2_appsess); |
| pool_destroy2(pool2_pendconn); |
| pool_destroy2(pool2_sig_handlers); |
| pool_destroy2(pool2_hdr_idx); |
| |
| if (have_appsession) { |
| pool_destroy2(apools.serverid); |
| pool_destroy2(apools.sessid); |
| } |
| |
| deinit_pollers(); |
| } /* end deinit() */ |
| |
| /* sends the signal <sig> to all pids found in <oldpids>. Returns the number of |
| * pids the signal was correctly delivered to. |
| */ |
| static int tell_old_pids(int sig) |
| { |
| int p; |
| int ret = 0; |
| for (p = 0; p < nb_oldpids; p++) |
| if (kill(oldpids[p], sig) == 0) |
| ret++; |
| return ret; |
| } |
| |
| /* Runs the polling loop */ |
| void run_poll_loop() |
| { |
| int next; |
| |
| tv_update_date(0,1); |
| while (1) { |
| /* check if we caught some signals and process them */ |
| signal_process_queue(); |
| |
| /* Check if we can expire some tasks */ |
| wake_expired_tasks(&next); |
| |
| /* Process a few tasks */ |
| process_runnable_tasks(&next); |
| |
| /* stop when there's nothing left to do */ |
| if (jobs == 0) |
| break; |
| |
| /* The poller will ensure it returns around <next> */ |
| cur_poller.poll(&cur_poller, next); |
| fd_process_cached_events(); |
| } |
| } |
| |
| /* This is the global management task for listeners. It enables listeners waiting |
| * for global resources when there are enough free resource, or at least once in |
| * a while. It is designed to be called as a task. |
| */ |
| static struct task *manage_global_listener_queue(struct task *t) |
| { |
| int next = TICK_ETERNITY; |
| /* queue is empty, nothing to do */ |
| if (LIST_ISEMPTY(&global_listener_queue)) |
| goto out; |
| |
| /* If there are still too many concurrent connections, let's wait for |
| * some of them to go away. We don't need to re-arm the timer because |
| * each of them will scan the queue anyway. |
| */ |
| if (unlikely(actconn >= global.maxconn)) |
| goto out; |
| |
| /* We should periodically try to enable listeners waiting for a global |
| * resource here, because it is possible, though very unlikely, that |
| * they have been blocked by a temporary lack of global resource such |
| * as a file descriptor or memory and that the temporary condition has |
| * disappeared. |
| */ |
| dequeue_all_listeners(&global_listener_queue); |
| |
| out: |
| t->expire = next; |
| task_queue(t); |
| return t; |
| } |
| |
| int main(int argc, char **argv) |
| { |
| int err, retry; |
| struct rlimit limit; |
| char errmsg[100]; |
| int pidfd = -1; |
| |
| init(argc, argv); |
| signal_register_fct(SIGQUIT, dump, SIGQUIT); |
| signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1); |
| signal_register_fct(SIGHUP, sig_dump_state, SIGHUP); |
| |
| /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL. |
| * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL |
| * was defined there, so let's stay on the safe side. |
| */ |
| signal_register_fct(SIGPIPE, NULL, 0); |
| |
| /* ulimits */ |
| if (!global.rlimit_nofile) |
| global.rlimit_nofile = global.maxsock; |
| |
| if (global.rlimit_nofile) { |
| limit.rlim_cur = limit.rlim_max = global.rlimit_nofile; |
| if (setrlimit(RLIMIT_NOFILE, &limit) == -1) { |
| /* try to set it to the max possible at least */ |
| getrlimit(RLIMIT_NOFILE, &limit); |
| Warning("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n", argv[0], global.rlimit_nofile, (int)limit.rlim_cur); |
| global.rlimit_nofile = limit.rlim_cur; |
| } |
| } |
| |
| if (global.rlimit_memmax) { |
| limit.rlim_cur = limit.rlim_max = |
| global.rlimit_memmax * 1048576ULL / global.nbproc; |
| #ifdef RLIMIT_AS |
| if (setrlimit(RLIMIT_AS, &limit) == -1) { |
| Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n", |
| argv[0], global.rlimit_memmax); |
| } |
| #else |
| if (setrlimit(RLIMIT_DATA, &limit) == -1) { |
| Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n", |
| argv[0], global.rlimit_memmax); |
| } |
| #endif |
| } |
| |
| /* We will loop at most 100 times with 10 ms delay each time. |
| * That's at most 1 second. We only send a signal to old pids |
| * if we cannot grab at least one port. |
| */ |
| retry = MAX_START_RETRIES; |
| err = ERR_NONE; |
| while (retry >= 0) { |
| struct timeval w; |
| err = start_proxies(retry == 0 || nb_oldpids == 0); |
| /* exit the loop on no error or fatal error */ |
| if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE) |
| break; |
| if (nb_oldpids == 0 || retry == 0) |
| break; |
| |
| /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on |
| * listening sockets. So on those platforms, it would be wiser to |
| * simply send SIGUSR1, which will not be undoable. |
| */ |
| if (tell_old_pids(SIGTTOU) == 0) { |
| /* no need to wait if we can't contact old pids */ |
| retry = 0; |
| continue; |
| } |
| /* give some time to old processes to stop listening */ |
| w.tv_sec = 0; |
| w.tv_usec = 10*1000; |
| select(0, NULL, NULL, NULL, &w); |
| retry--; |
| } |
| |
| /* Note: start_proxies() sends an alert when it fails. */ |
| if ((err & ~ERR_WARN) != ERR_NONE) { |
| if (retry != MAX_START_RETRIES && nb_oldpids) { |
| protocol_unbind_all(); /* cleanup everything we can */ |
| tell_old_pids(SIGTTIN); |
| } |
| exit(1); |
| } |
| |
| if (listeners == 0) { |
| Alert("[%s.main()] No enabled listener found (check the <listen> keywords) ! Exiting.\n", argv[0]); |
| /* Note: we don't have to send anything to the old pids because we |
| * never stopped them. */ |
| exit(1); |
| } |
| |
| err = protocol_bind_all(errmsg, sizeof(errmsg)); |
| if ((err & ~ERR_WARN) != ERR_NONE) { |
| if ((err & ERR_ALERT) || (err & ERR_WARN)) |
| Alert("[%s.main()] %s.\n", argv[0], errmsg); |
| |
| Alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]); |
| protocol_unbind_all(); /* cleanup everything we can */ |
| if (nb_oldpids) |
| tell_old_pids(SIGTTIN); |
| exit(1); |
| } else if (err & ERR_WARN) { |
| Alert("[%s.main()] %s.\n", argv[0], errmsg); |
| } |
| |
| /* prepare pause/play signals */ |
| signal_register_fct(SIGTTOU, sig_pause, SIGTTOU); |
| signal_register_fct(SIGTTIN, sig_listen, SIGTTIN); |
| |
| /* MODE_QUIET can inhibit alerts and warnings below this line */ |
| |
| global.mode &= ~MODE_STARTING; |
| if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) { |
| /* detach from the tty */ |
| fclose(stdin); fclose(stdout); fclose(stderr); |
| } |
| |
| /* open log & pid files before the chroot */ |
| if (global.mode & (MODE_DAEMON | MODE_SYSTEMD) && global.pidfile != NULL) { |
| unlink(global.pidfile); |
| pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644); |
| if (pidfd < 0) { |
| Alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile); |
| if (nb_oldpids) |
| tell_old_pids(SIGTTIN); |
| protocol_unbind_all(); |
| exit(1); |
| } |
| } |
| |
| #ifdef CONFIG_HAP_CTTPROXY |
| if (global.last_checks & LSTCHK_CTTPROXY) { |
| int ret; |
| |
| ret = check_cttproxy_version(); |
| if (ret < 0) { |
| Alert("[%s.main()] Cannot enable cttproxy.\n%s", |
| argv[0], |
| (ret == -1) ? " Incorrect module version.\n" |
| : " Make sure you have enough permissions and that the module is loaded.\n"); |
| protocol_unbind_all(); |
| exit(1); |
| } |
| } |
| #endif |
| |
| if ((global.last_checks & LSTCHK_NETADM) && global.uid) { |
| Alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n" |
| "", argv[0]); |
| protocol_unbind_all(); |
| exit(1); |
| } |
| |
| /* If the user is not root, we'll still let him try the configuration |
| * but we inform him that unexpected behaviour may occur. |
| */ |
| if ((global.last_checks & LSTCHK_NETADM) && getuid()) |
| Warning("[%s.main()] Some options which require full privileges" |
| " might not work well.\n" |
| "", argv[0]); |
| |
| /* chroot if needed */ |
| if (global.chroot != NULL) { |
| if (chroot(global.chroot) == -1 || chdir("/") == -1) { |
| Alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot); |
| if (nb_oldpids) |
| tell_old_pids(SIGTTIN); |
| protocol_unbind_all(); |
| exit(1); |
| } |
| } |
| |
| if (nb_oldpids) |
| nb_oldpids = tell_old_pids(oldpids_sig); |
| |
| /* Note that any error at this stage will be fatal because we will not |
| * be able to restart the old pids. |
| */ |
| |
| /* setgid / setuid */ |
| if (global.gid) { |
| if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1) |
| Warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'" |
| " without 'uid'/'user' is generally useless.\n", argv[0]); |
| |
| if (setgid(global.gid) == -1) { |
| Alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid); |
| protocol_unbind_all(); |
| exit(1); |
| } |
| } |
| |
| if (global.uid && setuid(global.uid) == -1) { |
| Alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid); |
| protocol_unbind_all(); |
| exit(1); |
| } |
| |
| /* check ulimits */ |
| limit.rlim_cur = limit.rlim_max = 0; |
| getrlimit(RLIMIT_NOFILE, &limit); |
| if (limit.rlim_cur < global.maxsock) { |
| 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", |
| argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock); |
| } |
| |
| if (global.mode & (MODE_DAEMON | MODE_SYSTEMD)) { |
| struct proxy *px; |
| struct peers *curpeers; |
| int ret = 0; |
| int *children = calloc(global.nbproc, sizeof(int)); |
| int proc; |
| |
| /* the father launches the required number of processes */ |
| for (proc = 0; proc < global.nbproc; proc++) { |
| ret = fork(); |
| if (ret < 0) { |
| Alert("[%s.main()] Cannot fork.\n", argv[0]); |
| protocol_unbind_all(); |
| exit(1); /* there has been an error */ |
| } |
| else if (ret == 0) /* child breaks here */ |
| break; |
| children[proc] = ret; |
| if (pidfd >= 0) { |
| char pidstr[100]; |
| snprintf(pidstr, sizeof(pidstr), "%d\n", ret); |
| shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr))); |
| } |
| relative_pid++; /* each child will get a different one */ |
| } |
| |
| #ifdef USE_CPU_AFFINITY |
| if (proc < global.nbproc && /* child */ |
| proc < LONGBITS && /* only the first 32/64 processes may be pinned */ |
| global.cpu_map[proc]) /* only do this if the process has a CPU map */ |
| sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map[proc]); |
| #endif |
| /* close the pidfile both in children and father */ |
| if (pidfd >= 0) { |
| //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */ |
| close(pidfd); |
| } |
| |
| /* We won't ever use this anymore */ |
| free(oldpids); oldpids = NULL; |
| free(global.chroot); global.chroot = NULL; |
| free(global.pidfile); global.pidfile = NULL; |
| |
| if (proc == global.nbproc) { |
| if (global.mode & MODE_SYSTEMD) { |
| protocol_unbind_all(); |
| for (proc = 0; proc < global.nbproc; proc++) |
| while (waitpid(children[proc], NULL, 0) == -1 && errno == EINTR); |
| } |
| exit(0); /* parent must leave */ |
| } |
| |
| /* we might have to unbind some proxies from some processes */ |
| px = proxy; |
| while (px != NULL) { |
| if (px->bind_proc && px->state != PR_STSTOPPED) { |
| if (!(px->bind_proc & (1UL << proc))) |
| stop_proxy(px); |
| } |
| px = px->next; |
| } |
| |
| /* we might have to unbind some peers sections from some processes */ |
| for (curpeers = peers; curpeers; curpeers = curpeers->next) { |
| if (!curpeers->peers_fe) |
| continue; |
| |
| if (curpeers->peers_fe->bind_proc & (1UL << proc)) |
| continue; |
| |
| stop_proxy(curpeers->peers_fe); |
| /* disable this peer section so that it kills itself */ |
| curpeers->peers_fe = NULL; |
| } |
| |
| free(children); |
| children = NULL; |
| /* if we're NOT in QUIET mode, we should now close the 3 first FDs to ensure |
| * that we can detach from the TTY. We MUST NOT do it in other cases since |
| * it would have already be done, and 0-2 would have been affected to listening |
| * sockets |
| */ |
| if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) { |
| /* detach from the tty */ |
| fclose(stdin); fclose(stdout); fclose(stderr); |
| global.mode &= ~MODE_VERBOSE; |
| global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */ |
| } |
| pid = getpid(); /* update child's pid */ |
| setsid(); |
| fork_poller(); |
| } |
| |
| protocol_enable_all(); |
| /* |
| * That's it : the central polling loop. Run until we stop. |
| */ |
| run_poll_loop(); |
| |
| /* Free all Hash Keys and all Hash elements */ |
| appsession_cleanup(); |
| /* Do some cleanup */ |
| deinit(); |
| |
| exit(0); |
| } |
| |
| |
| /* |
| * Local variables: |
| * c-indent-level: 8 |
| * c-basic-offset: 8 |
| * End: |
| */ |