ospfd/ospf_main.c

   1 /*
   2  * OSPFd main routine.
   3  *   Copyright (C) 1998, 99 Kunihiro Ishiguro, Toshiaki Takada
   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 "thread.h"
  27 #include "prefix.h"
  28 #include "linklist.h"
  29 #include "if.h"
  30 #include "vector.h"
  31 #include "vty.h"
  32 #include "command.h"
  33 #include "filter.h"
  34 #include "plist.h"
  35 #include "stream.h"
  36 #include "log.h"
  37 #include "memory.h"
  38 #include "privs.h"
  39 #include "sigevent.h"
  40 #include "zclient.h"
  41 #include "vrf.h"
  42 #include "libfrr.h"
  43
  44 #include "ospfd/ospfd.h"
  45 #include "ospfd/ospf_interface.h"
  46 #include "ospfd/ospf_asbr.h"
  47 #include "ospfd/ospf_lsa.h"
  48 #include "ospfd/ospf_lsdb.h"
  49 #include "ospfd/ospf_neighbor.h"
  50 #include "ospfd/ospf_dump.h"
  51 #include "ospfd/ospf_route.h"
  52 #include "ospfd/ospf_zebra.h"
  53 #include "ospfd/ospf_vty.h"
  54 #include "ospfd/ospf_bfd.h"
  55 #include "ospfd/ospf_errors.h"
  56
  57 /* ospfd privileges */
  58 zebra_capabilities_t _caps_p[] = {ZCAP_NET_RAW, ZCAP_BIND, ZCAP_NET_ADMIN,
  59                                   ZCAP_SYS_ADMIN};
  60
  61 struct zebra_privs_t ospfd_privs = {
  62 #if defined(FRR_USER) && defined(FRR_GROUP)
  63         .user = FRR_USER,
  64         .group = FRR_GROUP,
  65 #endif
  66 #if defined(VTY_GROUP)
  67         .vty_group = VTY_GROUP,
  68 #endif
  69         .caps_p = _caps_p,
  70         .cap_num_p = array_size(_caps_p),
  71         .cap_num_i = 0};
  72
  73 /* OSPFd options. */
  74 const struct option longopts[] = {
  75         {"instance", required_argument, NULL, 'n'},
  76         {"apiserver", no_argument, NULL, 'a'},
  77         {0}
  78 };
  79
  80 /* OSPFd program name */
  81
  82 /* Master of threads. */
  83 struct thread_master *master;
  84
  85 #ifdef SUPPORT_OSPF_API
  86 extern int ospf_apiserver_enable;
  87 #endif /* SUPPORT_OSPF_API */
  88
  89 /* SIGHUP handler. */
  90 static void sighup(void)
  91 {
  92         zlog_info("SIGHUP received");
  93 }
  94
  95 /* SIGINT / SIGTERM handler. */
  96 static void sigint(void)
  97 {
  98         zlog_notice("Terminating on signal");
  99         ospf_terminate();
 100 }
 101
 102 /* SIGUSR1 handler. */
 103 static void sigusr1(void)
 104 {
 105         zlog_rotate();
 106 }
 107
 108 struct quagga_signal_t ospf_signals[] = {
 109         {
 110                 .signal = SIGHUP,
 111                 .handler = &sighup,
 112         },
 113         {
 114                 .signal = SIGUSR1,
 115                 .handler = &sigusr1,
 116         },
 117         {
 118                 .signal = SIGINT,
 119                 .handler = &sigint,
 120         },
 121         {
 122                 .signal = SIGTERM,
 123                 .handler = &sigint,
 124         },
 125 };
 126
 127 static const struct frr_yang_module_info *const ospfd_yang_modules[] = {
 128         &frr_interface_info,
 129 };
 130
 131 FRR_DAEMON_INFO(ospfd, OSPF, .vty_port = OSPF_VTY_PORT,
 132
 133                 .proghelp = "Implementation of the OSPFv2 routing protocol.",
 134
 135                 .signals = ospf_signals, .n_signals = array_size(ospf_signals),
 136
 137                 .privs = &ospfd_privs, .yang_modules = ospfd_yang_modules,
 138                 .n_yang_modules = array_size(ospfd_yang_modules), )
 139
 140 /* OSPFd main routine. */
 141 int main(int argc, char **argv)
 142 {
 143         unsigned short instance = 0;
 144
 145 #ifdef SUPPORT_OSPF_API
 146         /* OSPF apiserver is disabled by default. */
 147         ospf_apiserver_enable = 0;
 148 #endif /* SUPPORT_OSPF_API */
 149
 150         frr_preinit(&ospfd_di, argc, argv);
 151         frr_opt_add("n:a", longopts,
 152                     "  -n, --instance     Set the instance id\n"
 153                     "  -a, --apiserver    Enable OSPF apiserver\n");
 154
 155         while (1) {
 156                 int opt;
 157
 158                 opt = frr_getopt(argc, argv, NULL);
 159
 160                 if (opt == EOF)
 161                         break;
 162
 163                 switch (opt) {
 164                 case 'n':
 165                         ospfd_di.instance = instance = atoi(optarg);
 166                         if (instance < 1)
 167                                 exit(0);
 168                         break;
 169                 case 0:
 170                         break;
 171 #ifdef SUPPORT_OSPF_API
 172                 case 'a':
 173                         ospf_apiserver_enable = 1;
 174                         break;
 175 #endif /* SUPPORT_OSPF_API */
 176                 default:
 177                         frr_help_exit(1);
 178                         break;
 179                 }
 180         }
 181
 182         /* Invoked by a priviledged user? -- endo. */
 183         if (geteuid() != 0) {
 184                 errno = EPERM;
 185                 perror(ospfd_di.progname);
 186                 exit(1);
 187         }
 188
 189         /* OSPF master init. */
 190         ospf_master_init(frr_init());
 191
 192         /* Initializations. */
 193         master = om->master;
 194
 195         /* Library inits. */
 196         ospf_debug_init();
 197         ospf_vrf_init();
 198
 199         access_list_init();
 200         prefix_list_init();
 201
 202         /* OSPFd inits. */
 203         ospf_if_init();
 204         ospf_zebra_init(master, instance);
 205
 206         /* OSPF vty inits. */
 207         ospf_vty_init();
 208         ospf_vty_show_init();
 209         ospf_vty_clear_init();
 210
 211         /* OSPF BFD init */
 212         ospf_bfd_init();
 213
 214         ospf_route_map_init();
 215         ospf_opaque_init();
 216
 217         /* OSPF errors init */
 218         ospf_error_init();
 219
 220         frr_config_fork();
 221         frr_run(master);
 222
 223         /* Not reached. */
 224         return (0);
 225 }