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