ripd/rip_main.c

   1 /* RIPd main routine.
   2  * Copyright (C) 1997, 98 Kunihiro Ishiguro <kunihiro@zebra.org>
   3  *
   4  * This file is part of GNU Zebra.
   5  *
   6  * GNU Zebra is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2, or (at your option) any
   9  * later version.
  10  *
  11  * GNU Zebra is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <zebra.h>
  22
  23 #include <lib/version.h>
  24 #include "getopt.h"
  25 #include "thread.h"
  26 #include "command.h"
  27 #include "memory.h"
  28 #include "prefix.h"
  29 #include "filter.h"
  30 #include "keychain.h"
  31 #include "log.h"
  32 #include "privs.h"
  33 #include "sigevent.h"
  34 #include "zclient.h"
  35 #include "vrf.h"
  36 #include "if_rmap.h"
  37 #include "libfrr.h"
  38 #include "routemap.h"
  39
  40 #include "ripd/ripd.h"
  41 #include "ripd/rip_nb.h"
  42 #include "ripd/rip_errors.h"
  43
  44 /* ripd options. */
  45 static struct option longopts[] = {{0}};
  46
  47 /* ripd privileges */
  48 zebra_capabilities_t _caps_p[] = {ZCAP_NET_RAW, ZCAP_BIND, ZCAP_SYS_ADMIN};
  49
  50 struct zebra_privs_t ripd_privs = {
  51 #if defined(FRR_USER)
  52         .user = FRR_USER,
  53 #endif
  54 #if defined FRR_GROUP
  55         .group = FRR_GROUP,
  56 #endif
  57 #ifdef VTY_GROUP
  58         .vty_group = VTY_GROUP,
  59 #endif
  60         .caps_p = _caps_p,
  61         .cap_num_p = array_size(_caps_p),
  62         .cap_num_i = 0};
  63
  64 /* Master of threads. */
  65 struct thread_master *master;
  66
  67 static struct frr_daemon_info ripd_di;
  68
  69 /* SIGHUP handler. */
  70 static void sighup(void)
  71 {
  72         zlog_info("SIGHUP received");
  73
  74         /* Reload config file. */
  75         vty_read_config(NULL, ripd_di.config_file, config_default);
  76 }
  77
  78 /* SIGINT handler. */
  79 static void sigint(void)
  80 {
  81         zlog_notice("Terminating on signal");
  82
  83         rip_vrf_terminate();
  84         if_rmap_terminate();
  85         rip_zclient_stop();
  86         frr_fini();
  87
  88         exit(0);
  89 }
  90
  91 /* SIGUSR1 handler. */
  92 static void sigusr1(void)
  93 {
  94         zlog_rotate();
  95 }
  96
  97 static struct frr_signal_t ripd_signals[] = {
  98         {
  99                 .signal = SIGHUP,
 100                 .handler = &sighup,
 101         },
 102         {
 103                 .signal = SIGUSR1,
 104                 .handler = &sigusr1,
 105         },
 106         {
 107                 .signal = SIGINT,
 108                 .handler = &sigint,
 109         },
 110         {
 111                 .signal = SIGTERM,
 112                 .handler = &sigint,
 113         },
 114 };
 115
 116 static const struct frr_yang_module_info *const ripd_yang_modules[] = {
 117         &frr_filter_info,
 118         &frr_interface_info,
 119         &frr_ripd_info,
 120         &frr_route_map_info,
 121         &frr_vrf_info,
 122 };
 123
 124 FRR_DAEMON_INFO(ripd, RIP, .vty_port = RIP_VTY_PORT,
 125
 126                 .proghelp = "Implementation of the RIP routing protocol.",
 127
 128                 .signals = ripd_signals, .n_signals = array_size(ripd_signals),
 129
 130                 .privs = &ripd_privs, .yang_modules = ripd_yang_modules,
 131                 .n_yang_modules = array_size(ripd_yang_modules),
 132 );
 133
 134 #define DEPRECATED_OPTIONS ""
 135
 136 /* Main routine of ripd. */
 137 int main(int argc, char **argv)
 138 {
 139         frr_preinit(&ripd_di, argc, argv);
 140
 141         frr_opt_add("" DEPRECATED_OPTIONS, longopts, "");
 142
 143         /* Command line option parse. */
 144         while (1) {
 145                 int opt;
 146
 147                 opt = frr_getopt(argc, argv, NULL);
 148
 149                 if (opt && opt < 128 && strchr(DEPRECATED_OPTIONS, opt)) {
 150                         fprintf(stderr,
 151                                 "The -%c option no longer exists.\nPlease refer to the manual.\n",
 152                                 opt);
 153                         continue;
 154                 }
 155
 156                 if (opt == EOF)
 157                         break;
 158
 159                 switch (opt) {
 160                 case 0:
 161                         break;
 162                 default:
 163                         frr_help_exit(1);
 164                 }
 165         }
 166
 167         /* Prepare master thread. */
 168         master = frr_init();
 169
 170         /* Library initialization. */
 171         rip_error_init();
 172         keychain_init();
 173         rip_vrf_init();
 174
 175         /* RIP related initialization. */
 176         rip_init();
 177         rip_if_init();
 178         rip_cli_init();
 179         rip_zclient_init(master);
 180
 181         frr_config_fork();
 182         frr_run(master);
 183
 184         /* Not reached. */
 185         return 0;
 186 }