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 "libfrr.h"
  39
  40 #include "ripngd/ripngd.h"
  41
  42 /* RIPngd options. */
  43 #if CONFDATE > 20190521
  44         CPP_NOTICE("-r / --retain has reached deprecation EOL, remove")
  45 #endif
  46 struct option longopts[] = {{"retain", no_argument, NULL, 'r'}, {0}};
  47
  48 /* ripngd privileges */
  49 zebra_capabilities_t _caps_p[] = {ZCAP_NET_RAW, ZCAP_BIND};
  50
  51 struct zebra_privs_t ripngd_privs = {
  52 #if defined(FRR_USER)
  53         .user = FRR_USER,
  54 #endif
  55 #if defined FRR_GROUP
  56         .group = FRR_GROUP,
  57 #endif
  58 #ifdef VTY_GROUP
  59         .vty_group = VTY_GROUP,
  60 #endif
  61         .caps_p = _caps_p,
  62         .cap_num_p = 2,
  63         .cap_num_i = 0};
  64
  65
  66 /* Master of threads. */
  67 struct thread_master *master;
  68
  69 static struct frr_daemon_info ripngd_di;
  70
  71 /* SIGHUP handler. */
  72 static void sighup(void)
  73 {
  74         zlog_info("SIGHUP received");
  75         ripng_clean();
  76         ripng_reset();
  77
  78         /* Reload config file. */
  79         vty_read_config(ripngd_di.config_file, config_default);
  80
  81         /* Try to return to normal operation. */
  82 }
  83
  84 /* SIGINT handler. */
  85 static void sigint(void)
  86 {
  87         zlog_notice("Terminating on signal");
  88
  89         ripng_clean();
  90
  91         ripng_zebra_stop();
  92         frr_fini();
  93         exit(0);
  94 }
  95
  96 /* SIGUSR1 handler. */
  97 static void sigusr1(void)
  98 {
  99         zlog_rotate();
 100 }
 101
 102 struct quagga_signal_t ripng_signals[] = {
 103         {
 104                 .signal = SIGHUP,
 105                 .handler = &sighup,
 106         },
 107         {
 108                 .signal = SIGUSR1,
 109                 .handler = &sigusr1,
 110         },
 111         {
 112                 .signal = SIGINT,
 113                 .handler = &sigint,
 114         },
 115         {
 116                 .signal = SIGTERM,
 117                 .handler = &sigint,
 118         },
 119 };
 120
 121 FRR_DAEMON_INFO(ripngd, RIPNG, .vty_port = RIPNG_VTY_PORT,
 122
 123                 .proghelp = "Implementation of the RIPng routing protocol.",
 124
 125                 .signals = ripng_signals,
 126                 .n_signals = array_size(ripng_signals),
 127
 128                 .privs = &ripngd_privs, )
 129
 130 #if CONFDATE > 20190521
 131 CPP_NOTICE("-r / --retain has reached deprecation EOL, remove")
 132 #endif
 133 #define DEPRECATED_OPTIONS "r"
 134
 135 /* RIPngd main routine. */
 136 int main(int argc, char **argv)
 137 {
 138         frr_preinit(&ripngd_di, argc, argv);
 139
 140         frr_opt_add("" DEPRECATED_OPTIONS, longopts, "");
 141
 142         while (1) {
 143                 int opt;
 144
 145                 opt = frr_getopt(argc, argv, NULL);
 146
 147                 if (opt && opt < 128 && strchr(DEPRECATED_OPTIONS, opt)) {
 148                         fprintf(stderr,
 149                                 "The -%c option no longer exists.\nPlease refer to the manual.\n",
 150                                 opt);
 151                         continue;
 152                 }
 153
 154                 if (opt == EOF)
 155                         break;
 156
 157                 switch (opt) {
 158                 case 0:
 159                         break;
 160                 default:
 161                         frr_help_exit(1);
 162                         break;
 163                 }
 164         }
 165
 166         master = frr_init();
 167
 168         /* Library inits. */
 169         vrf_init(NULL, NULL, NULL, NULL);
 170
 171         /* RIPngd inits. */
 172         ripng_init();
 173         zebra_init(master);
 174         ripng_peer_init();
 175
 176         frr_config_fork();
 177         frr_run(master);
 178
 179         /* Not reached. */
 180         return 0;
 181 }