ripngd/ripng_main.c

   1 /*
   2  * RIPngd main routine.
   3  * Copyright (C) 1998, 1999 Kunihiro Ishiguro
   4  *
   5  * This file is part of GNU Zebra.
   6  *
   7  * GNU Zebra is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2, or (at your option) any
  10  * later version.
  11  *
  12  * GNU Zebra is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; see the file COPYING; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #include <zebra.h>
  23
  24 #include <lib/version.h>
  25 #include "getopt.h"
  26 #include "vector.h"
  27 #include "vty.h"
  28 #include "command.h"
  29 #include "memory.h"
  30 #include "memory_vty.h"
  31 #include "thread.h"
  32 #include "log.h"
  33 #include "prefix.h"
  34 #include "if.h"
  35 #include "privs.h"
  36 #include "sigevent.h"
  37 #include "vrf.h"
  38 #include "if_rmap.h"
  39 #include "libfrr.h"
  40
  41 #include "ripngd/ripngd.h"
  42
  43 /* RIPngd options. */
  44 #if CONFDATE > 20190521
  45         CPP_NOTICE("-r / --retain has reached deprecation EOL, remove")
  46 #endif
  47 struct option longopts[] = {{"retain", no_argument, NULL, 'r'}, {0}};
  48
  49 /* ripngd privileges */
  50 zebra_capabilities_t _caps_p[] = {ZCAP_NET_RAW, ZCAP_BIND, ZCAP_SYS_ADMIN};
  51
  52 struct zebra_privs_t ripngd_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
  67 /* Master of threads. */
  68 struct thread_master *master;
  69
  70 static struct frr_daemon_info ripngd_di;
  71
  72 /* SIGHUP handler. */
  73 static void sighup(void)
  74 {
  75         zlog_info("SIGHUP received");
  76
  77         /* Reload config file. */
  78         vty_read_config(NULL, ripngd_di.config_file, config_default);
  79 }
  80
  81 /* SIGINT handler. */
  82 static void sigint(void)
  83 {
  84         zlog_notice("Terminating on signal");
  85
  86         ripng_vrf_terminate();
  87         if_rmap_terminate();
  88         ripng_zebra_stop();
  89         frr_fini();
  90         exit(0);
  91 }
  92
  93 /* SIGUSR1 handler. */
  94 static void sigusr1(void)
  95 {
  96         zlog_rotate();
  97 }
  98
  99 struct quagga_signal_t ripng_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 *ripngd_yang_modules[] = {
 119         &frr_interface_info,
 120         &frr_ripngd_info,
 121 };
 122
 123 FRR_DAEMON_INFO(ripngd, RIPNG, .vty_port = RIPNG_VTY_PORT,
 124
 125                 .proghelp = "Implementation of the RIPng routing protocol.",
 126
 127                 .signals = ripng_signals,
 128                 .n_signals = array_size(ripng_signals),
 129
 130                 .privs = &ripngd_privs,
 131
 132                 .yang_modules = ripngd_yang_modules,
 133                 .n_yang_modules = array_size(ripngd_yang_modules), )
 134
 135 #if CONFDATE > 20190521
 136 CPP_NOTICE("-r / --retain has reached deprecation EOL, remove")
 137 #endif
 138 #define DEPRECATED_OPTIONS "r"
 139
 140 /* RIPngd main routine. */
 141 int main(int argc, char **argv)
 142 {
 143         frr_preinit(&ripngd_di, argc, argv);
 144
 145         frr_opt_add("" DEPRECATED_OPTIONS, longopts, "");
 146
 147         while (1) {
 148                 int opt;
 149
 150                 opt = frr_getopt(argc, argv, NULL);
 151
 152                 if (opt && opt < 128 && strchr(DEPRECATED_OPTIONS, opt)) {
 153                         fprintf(stderr,
 154                                 "The -%c option no longer exists.\nPlease refer to the manual.\n",
 155                                 opt);
 156                         continue;
 157                 }
 158
 159                 if (opt == EOF)
 160                         break;
 161
 162                 switch (opt) {
 163                 case 0:
 164                         break;
 165                 default:
 166                         frr_help_exit(1);
 167                         break;
 168                 }
 169         }
 170
 171         master = frr_init();
 172
 173         /* Library inits. */
 174         ripng_vrf_init();
 175
 176         /* RIPngd inits. */
 177         ripng_init();
 178         ripng_cli_init();
 179         zebra_init(master);
 180
 181         frr_config_fork();
 182         frr_run(master);
 183
 184         /* Not reached. */
 185         return 0;
 186 }