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