ospfd/ospf_main.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * OSPFd main routine.
   4  *   Copyright (C) 1998, 99 Kunihiro Ishiguro, Toshiaki Takada
   5  */
   6
   7 #include <zebra.h>
   8
   9 #include <lib/version.h>
  10 #include "bfd.h"
  11 #include "getopt.h"
  12 #include "event.h"
  13 #include "prefix.h"
  14 #include "linklist.h"
  15 #include "if.h"
  16 #include "vector.h"
  17 #include "vty.h"
  18 #include "command.h"
  19 #include "filter.h"
  20 #include "plist.h"
  21 #include "stream.h"
  22 #include "log.h"
  23 #include "memory.h"
  24 #include "privs.h"
  25 #include "sigevent.h"
  26 #include "zclient.h"
  27 #include "vrf.h"
  28 #include "libfrr.h"
  29 #include "routemap.h"
  30
  31 #include "ospfd/ospfd.h"
  32 #include "ospfd/ospf_interface.h"
  33 #include "ospfd/ospf_asbr.h"
  34 #include "ospfd/ospf_lsa.h"
  35 #include "ospfd/ospf_lsdb.h"
  36 #include "ospfd/ospf_neighbor.h"
  37 #include "ospfd/ospf_dump.h"
  38 #include "ospfd/ospf_route.h"
  39 #include "ospfd/ospf_zebra.h"
  40 #include "ospfd/ospf_vty.h"
  41 #include "ospfd/ospf_bfd.h"
  42 #include "ospfd/ospf_gr.h"
  43 #include "ospfd/ospf_errors.h"
  44 #include "ospfd/ospf_ldp_sync.h"
  45 #include "ospfd/ospf_routemap_nb.h"
  46
  47 /* ospfd privileges */
  48 zebra_capabilities_t _caps_p[] = {ZCAP_NET_RAW, ZCAP_BIND, ZCAP_NET_ADMIN,
  49                                   ZCAP_SYS_ADMIN};
  50
  51 struct zebra_privs_t ospfd_privs = {
  52 #if defined(FRR_USER) && defined(FRR_GROUP)
  53         .user = FRR_USER,
  54         .group = FRR_GROUP,
  55 #endif
  56 #if defined(VTY_GROUP)
  57         .vty_group = VTY_GROUP,
  58 #endif
  59         .caps_p = _caps_p,
  60         .cap_num_p = array_size(_caps_p),
  61         .cap_num_i = 0};
  62
  63 /* OSPFd options. */
  64 const struct option longopts[] = {
  65         {"instance", required_argument, NULL, 'n'},
  66         {"apiserver", no_argument, NULL, 'a'},
  67         {0}
  68 };
  69
  70 /* OSPFd program name */
  71
  72 /* Master of threads. */
  73 struct event_master *master;
  74
  75 #ifdef SUPPORT_OSPF_API
  76 extern int ospf_apiserver_enable;
  77 #endif /* SUPPORT_OSPF_API */
  78
  79 /* SIGHUP handler. */
  80 static void sighup(void)
  81 {
  82         zlog_info("SIGHUP received");
  83 }
  84
  85 /* SIGINT / SIGTERM handler. */
  86 static void sigint(void)
  87 {
  88         zlog_notice("Terminating on signal");
  89         bfd_protocol_integration_set_shutdown(true);
  90         ospf_terminate();
  91         exit(0);
  92 }
  93
  94 /* SIGUSR1 handler. */
  95 static void sigusr1(void)
  96 {
  97         zlog_rotate();
  98 }
  99
 100 struct frr_signal_t ospf_signals[] = {
 101         {
 102                 .signal = SIGHUP,
 103                 .handler = &sighup,
 104         },
 105         {
 106                 .signal = SIGUSR1,
 107                 .handler = &sigusr1,
 108         },
 109         {
 110                 .signal = SIGINT,
 111                 .handler = &sigint,
 112         },
 113         {
 114                 .signal = SIGTERM,
 115                 .handler = &sigint,
 116         },
 117 };
 118
 119 static const struct frr_yang_module_info *const ospfd_yang_modules[] = {
 120         &frr_filter_info,
 121         &frr_interface_info,
 122         &frr_route_map_info,
 123         &frr_vrf_info,
 124         &frr_ospf_route_map_info,
 125 };
 126
 127 FRR_DAEMON_INFO(ospfd, OSPF, .vty_port = OSPF_VTY_PORT,
 128
 129                 .proghelp = "Implementation of the OSPFv2 routing protocol.",
 130
 131                 .signals = ospf_signals, .n_signals = array_size(ospf_signals),
 132
 133                 .privs = &ospfd_privs, .yang_modules = ospfd_yang_modules,
 134                 .n_yang_modules = array_size(ospfd_yang_modules),
 135 );
 136
 137 /* OSPFd main routine. */
 138 int main(int argc, char **argv)
 139 {
 140 #ifdef SUPPORT_OSPF_API
 141         /* OSPF apiserver is disabled by default. */
 142         ospf_apiserver_enable = 0;
 143 #endif /* SUPPORT_OSPF_API */
 144
 145         frr_preinit(&ospfd_di, argc, argv);
 146         frr_opt_add("n:a", longopts,
 147                     "  -n, --instance     Set the instance id\n"
 148                     "  -a, --apiserver    Enable OSPF apiserver\n");
 149
 150         while (1) {
 151                 int opt;
 152
 153                 opt = frr_getopt(argc, argv, NULL);
 154
 155                 if (opt == EOF)
 156                         break;
 157
 158                 switch (opt) {
 159                 case 'n':
 160                         ospfd_di.instance = ospf_instance = atoi(optarg);
 161                         if (ospf_instance < 1)
 162                                 exit(0);
 163                         break;
 164                 case 0:
 165                         break;
 166 #ifdef SUPPORT_OSPF_API
 167                 case 'a':
 168                         ospf_apiserver_enable = 1;
 169                         break;
 170 #endif /* SUPPORT_OSPF_API */
 171                 default:
 172                         frr_help_exit(1);
 173                 }
 174         }
 175
 176         /* Invoked by a priviledged user? -- endo. */
 177         if (geteuid() != 0) {
 178                 errno = EPERM;
 179                 perror(ospfd_di.progname);
 180                 exit(1);
 181         }
 182
 183         /* OSPF master init. */
 184         ospf_master_init(frr_init());
 185
 186         /* Initializations. */
 187         master = om->master;
 188
 189         /* Library inits. */
 190         ospf_debug_init();
 191         ospf_vrf_init();
 192
 193         access_list_init();
 194         prefix_list_init();
 195
 196         /* OSPFd inits. */
 197         ospf_if_init();
 198         ospf_zebra_init(master, ospf_instance);
 199
 200         /* OSPF vty inits. */
 201         ospf_vty_init();
 202         ospf_vty_show_init();
 203         ospf_vty_clear_init();
 204
 205         /* OSPF BFD init */
 206         ospf_bfd_init(master);
 207
 208         /* OSPF LDP IGP Sync init */
 209         ospf_ldp_sync_init();
 210
 211         ospf_route_map_init();
 212         ospf_opaque_init();
 213         ospf_gr_init();
 214         ospf_gr_helper_init();
 215
 216         /* OSPF errors init */
 217         ospf_error_init();
 218
 219         frr_config_fork();
 220         frr_run(master);
 221
 222         /* Not reached. */
 223         return 0;
 224 }