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 "bfd.h"
  26 #include "getopt.h"
  27 #include "thread.h"
  28 #include "prefix.h"
  29 #include "linklist.h"
  30 #include "if.h"
  31 #include "vector.h"
  32 #include "vty.h"
  33 #include "command.h"
  34 #include "filter.h"
  35 #include "plist.h"
  36 #include "stream.h"
  37 #include "log.h"
  38 #include "memory.h"
  39 #include "privs.h"
  40 #include "sigevent.h"
  41 #include "zclient.h"
  42 #include "vrf.h"
  43 #include "libfrr.h"
  44 #include "routemap.h"
  45
  46 #include "ospfd/ospfd.h"
  47 #include "ospfd/ospf_interface.h"
  48 #include "ospfd/ospf_asbr.h"
  49 #include "ospfd/ospf_lsa.h"
  50 #include "ospfd/ospf_lsdb.h"
  51 #include "ospfd/ospf_neighbor.h"
  52 #include "ospfd/ospf_dump.h"
  53 #include "ospfd/ospf_route.h"
  54 #include "ospfd/ospf_zebra.h"
  55 #include "ospfd/ospf_vty.h"
  56 #include "ospfd/ospf_bfd.h"
  57 #include "ospfd/ospf_gr.h"
  58 #include "ospfd/ospf_errors.h"
  59 #include "ospfd/ospf_ldp_sync.h"
  60 #include "ospfd/ospf_routemap_nb.h"
  61
  62 /* ospfd privileges */
  63 zebra_capabilities_t _caps_p[] = {ZCAP_NET_RAW, ZCAP_BIND, ZCAP_NET_ADMIN,
  64                                   ZCAP_SYS_ADMIN};
  65
  66 struct zebra_privs_t ospfd_privs = {
  67 #if defined(FRR_USER) && defined(FRR_GROUP)
  68         .user = FRR_USER,
  69         .group = FRR_GROUP,
  70 #endif
  71 #if defined(VTY_GROUP)
  72         .vty_group = VTY_GROUP,
  73 #endif
  74         .caps_p = _caps_p,
  75         .cap_num_p = array_size(_caps_p),
  76         .cap_num_i = 0};
  77
  78 /* OSPFd options. */
  79 const struct option longopts[] = {
  80         {"instance", required_argument, NULL, 'n'},
  81         {"apiserver", no_argument, NULL, 'a'},
  82         {0}
  83 };
  84
  85 /* OSPFd program name */
  86
  87 /* Master of threads. */
  88 struct thread_master *master;
  89
  90 #ifdef SUPPORT_OSPF_API
  91 extern int ospf_apiserver_enable;
  92 #endif /* SUPPORT_OSPF_API */
  93
  94 /* SIGHUP handler. */
  95 static void sighup(void)
  96 {
  97         zlog_info("SIGHUP received");
  98 }
  99
 100 /* SIGINT / SIGTERM handler. */
 101 static void sigint(void)
 102 {
 103         zlog_notice("Terminating on signal");
 104         bfd_protocol_integration_set_shutdown(true);
 105         ospf_terminate();
 106         exit(0);
 107 }
 108
 109 /* SIGUSR1 handler. */
 110 static void sigusr1(void)
 111 {
 112         zlog_rotate();
 113 }
 114
 115 struct frr_signal_t ospf_signals[] = {
 116         {
 117                 .signal = SIGHUP,
 118                 .handler = &sighup,
 119         },
 120         {
 121                 .signal = SIGUSR1,
 122                 .handler = &sigusr1,
 123         },
 124         {
 125                 .signal = SIGINT,
 126                 .handler = &sigint,
 127         },
 128         {
 129                 .signal = SIGTERM,
 130                 .handler = &sigint,
 131         },
 132 };
 133
 134 static const struct frr_yang_module_info *const ospfd_yang_modules[] = {
 135         &frr_filter_info,
 136         &frr_interface_info,
 137         &frr_route_map_info,
 138         &frr_vrf_info,
 139         &frr_ospf_route_map_info,
 140 };
 141
 142 FRR_DAEMON_INFO(ospfd, OSPF, .vty_port = OSPF_VTY_PORT,
 143
 144                 .proghelp = "Implementation of the OSPFv2 routing protocol.",
 145
 146                 .signals = ospf_signals, .n_signals = array_size(ospf_signals),
 147
 148                 .privs = &ospfd_privs, .yang_modules = ospfd_yang_modules,
 149                 .n_yang_modules = array_size(ospfd_yang_modules),
 150 );
 151
 152 /* OSPFd main routine. */
 153 int main(int argc, char **argv)
 154 {
 155 #ifdef SUPPORT_OSPF_API
 156         /* OSPF apiserver is disabled by default. */
 157         ospf_apiserver_enable = 0;
 158 #endif /* SUPPORT_OSPF_API */
 159
 160         frr_preinit(&ospfd_di, argc, argv);
 161         frr_opt_add("n:a", longopts,
 162                     "  -n, --instance     Set the instance id\n"
 163                     "  -a, --apiserver    Enable OSPF apiserver\n");
 164
 165         while (1) {
 166                 int opt;
 167
 168                 opt = frr_getopt(argc, argv, NULL);
 169
 170                 if (opt == EOF)
 171                         break;
 172
 173                 switch (opt) {
 174                 case 'n':
 175                         ospfd_di.instance = ospf_instance = atoi(optarg);
 176                         if (ospf_instance < 1)
 177                                 exit(0);
 178                         break;
 179                 case 0:
 180                         break;
 181 #ifdef SUPPORT_OSPF_API
 182                 case 'a':
 183                         ospf_apiserver_enable = 1;
 184                         break;
 185 #endif /* SUPPORT_OSPF_API */
 186                 default:
 187                         frr_help_exit(1);
 188                 }
 189         }
 190
 191         /* Invoked by a priviledged user? -- endo. */
 192         if (geteuid() != 0) {
 193                 errno = EPERM;
 194                 perror(ospfd_di.progname);
 195                 exit(1);
 196         }
 197
 198         /* OSPF master init. */
 199         ospf_master_init(frr_init());
 200
 201         /* Initializations. */
 202         master = om->master;
 203
 204         /* Library inits. */
 205         ospf_debug_init();
 206         ospf_vrf_init();
 207
 208         access_list_init();
 209         prefix_list_init();
 210
 211         /* OSPFd inits. */
 212         ospf_if_init();
 213         ospf_zebra_init(master, ospf_instance);
 214
 215         /* OSPF vty inits. */
 216         ospf_vty_init();
 217         ospf_vty_show_init();
 218         ospf_vty_clear_init();
 219
 220         /* OSPF BFD init */
 221         ospf_bfd_init(master);
 222
 223         /* OSPF LDP IGP Sync init */
 224         ospf_ldp_sync_init();
 225
 226         ospf_route_map_init();
 227         ospf_opaque_init();
 228         ospf_gr_init();
 229         ospf_gr_helper_init();
 230
 231         /* OSPF errors init */
 232         ospf_error_init();
 233
 234         frr_config_fork();
 235         frr_run(master);
 236
 237         /* Not reached. */
 238         return 0;
 239 }