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 "memory_vty.h"
  29 #include "prefix.h"
  30 #include "filter.h"
  31 #include "keychain.h"
  32 #include "log.h"
  33 #include "privs.h"
  34 #include "sigevent.h"
  35 #include "zclient.h"
  36 #include "vrf.h"
  37 #include "if_rmap.h"
  38 #include "libfrr.h"
  39
  40 #include "ripd/ripd.h"
  41 #include "ripd/rip_errors.h"
  42
  43 /* ripd options. */
  44 #if CONFDATE > 20190521
  45         CPP_NOTICE("-r / --retain has reached deprecation EOL, remove")
  46 #endif
  47 static struct option longopts[] = {{"retain", no_argument, NULL, 'r'}, {0}};
  48
  49 /* ripd privileges */
  50 zebra_capabilities_t _caps_p[] = {ZCAP_NET_RAW, ZCAP_BIND, ZCAP_SYS_ADMIN};
  51
  52 struct zebra_privs_t ripd_privs = {
  53 #if defined(FRR_USER)
  54         .user = FRR_USER,
  55 #endif
  56 #if defined FRR_GROUP
  57         .group = FRR_GROUP,
  58 #endif
  59 #ifdef VTY_GROUP
  60         .vty_group = VTY_GROUP,
  61 #endif
  62         .caps_p = _caps_p,
  63         .cap_num_p = array_size(_caps_p),
  64         .cap_num_i = 0};
  65
  66 /* Master of threads. */
  67 struct thread_master *master;
  68
  69 static struct frr_daemon_info ripd_di;
  70
  71 /* SIGHUP handler. */
  72 static void sighup(void)
  73 {
  74         zlog_info("SIGHUP received");
  75
  76         /* Reload config file. */
  77         vty_read_config(NULL, ripd_di.config_file, config_default);
  78 }
  79
  80 /* SIGINT handler. */
  81 static void sigint(void)
  82 {
  83         zlog_notice("Terminating on signal");
  84
  85         rip_vrf_terminate();
  86         if_rmap_terminate();
  87         rip_zclient_stop();
  88         frr_fini();
  89
  90         exit(0);
  91 }
  92
  93 /* SIGUSR1 handler. */
  94 static void sigusr1(void)
  95 {
  96         zlog_rotate();
  97 }
  98
  99 static struct quagga_signal_t ripd_signals[] = {
 100         {
 101                 .signal = SIGHUP,
 102                 .handler = &sighup,
 103         },
 104         {
 105                 .signal = SIGUSR1,
 106                 .handler = &sigusr1,
 107         },
 108         {
 109                 .signal = SIGINT,
 110                 .handler = &sigint,
 111         },
 112         {
 113                 .signal = SIGTERM,
 114                 .handler = &sigint,
 115         },
 116 };
 117
 118 static const struct frr_yang_module_info *ripd_yang_modules[] = {
 119         &frr_interface_info,
 120         &frr_ripd_info,
 121 };
 122
 123 FRR_DAEMON_INFO(ripd, RIP, .vty_port = RIP_VTY_PORT,
 124
 125                 .proghelp = "Implementation of the RIP routing protocol.",
 126
 127                 .signals = ripd_signals, .n_signals = array_size(ripd_signals),
 128
 129                 .privs = &ripd_privs, .yang_modules = ripd_yang_modules,
 130                 .n_yang_modules = array_size(ripd_yang_modules), )
 131
 132 #if CONFDATE > 20190521
 133 CPP_NOTICE("-r / --retain has reached deprecation EOL, remove")
 134 #endif
 135 #define DEPRECATED_OPTIONS "r"
 136
 137 /* Main routine of ripd. */
 138 int main(int argc, char **argv)
 139 {
 140         frr_preinit(&ripd_di, argc, argv);
 141
 142         frr_opt_add("" DEPRECATED_OPTIONS, longopts, "");
 143
 144         /* Command line option parse. */
 145         while (1) {
 146                 int opt;
 147
 148                 opt = frr_getopt(argc, argv, NULL);
 149
 150                 if (opt && opt < 128 && strchr(DEPRECATED_OPTIONS, opt)) {
 151                         fprintf(stderr,
 152                                 "The -%c option no longer exists.\nPlease refer to the manual.\n",
 153                                 opt);
 154                         continue;
 155                 }
 156
 157                 if (opt == EOF)
 158                         break;
 159
 160                 switch (opt) {
 161                 case 0:
 162                         break;
 163                 default:
 164                         frr_help_exit(1);
 165                         break;
 166                 }
 167         }
 168
 169         /* Prepare master thread. */
 170         master = frr_init();
 171
 172         /* Library initialization. */
 173         rip_error_init();
 174         keychain_init();
 175         rip_vrf_init();
 176
 177         /* RIP related initialization. */
 178         rip_init();
 179         rip_if_init();
 180         rip_cli_init();
 181         rip_zclient_init(master);
 182
 183         frr_config_fork();
 184         frr_run(master);
 185
 186         /* Not reached. */
 187         return (0);
 188 }