ospf6d/ospf6_main.c

   1 /*
   2  * Copyright (C) 1999 Yasuhiro Ohara
   3  *
   4  * This file is part of GNU Zebra.
   5  *
   6  * GNU Zebra is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2, or (at your option) any
   9  * later version.
  10  *
  11  * GNU Zebra is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <zebra.h>
  22 #include <lib/version.h>
  23 #include <stdlib.h>
  24
  25 #include "getopt.h"
  26 #include "thread.h"
  27 #include "log.h"
  28 #include "command.h"
  29 #include "vty.h"
  30 #include "memory.h"
  31 #include "if.h"
  32 #include "filter.h"
  33 #include "prefix.h"
  34 #include "plist.h"
  35 #include "privs.h"
  36 #include "sigevent.h"
  37 #include "zclient.h"
  38 #include "vrf.h"
  39 #include "bfd.h"
  40 #include "libfrr.h"
  41
  42 #include "ospf6d.h"
  43 #include "ospf6_top.h"
  44 #include "ospf6_message.h"
  45 #include "ospf6_network.h"
  46 #include "ospf6_asbr.h"
  47 #include "ospf6_lsa.h"
  48 #include "ospf6_interface.h"
  49 #include "ospf6_zebra.h"
  50 #include "ospf6_routemap_nb.h"
  51
  52 /* Default configuration file name for ospf6d. */
  53 #define OSPF6_DEFAULT_CONFIG       "ospf6d.conf"
  54
  55 /* Default port values. */
  56 #define OSPF6_VTY_PORT             2606
  57
  58 /* ospf6d privileges */
  59 zebra_capabilities_t _caps_p[] = {ZCAP_NET_RAW, ZCAP_BIND, ZCAP_SYS_ADMIN};
  60
  61 struct zebra_privs_t ospf6d_privs = {
  62 #if defined(FRR_USER)
  63         .user = FRR_USER,
  64 #endif
  65 #if defined FRR_GROUP
  66         .group = FRR_GROUP,
  67 #endif
  68 #ifdef VTY_GROUP
  69         .vty_group = VTY_GROUP,
  70 #endif
  71         .caps_p = _caps_p,
  72         .cap_num_p = array_size(_caps_p),
  73         .cap_num_i = 0};
  74
  75 /* ospf6d options, we use GNU getopt library. */
  76 struct option longopts[] = {{0}};
  77
  78 /* Master of threads. */
  79 struct thread_master *master;
  80
  81 static void __attribute__((noreturn)) ospf6_exit(int status)
  82 {
  83         struct vrf *vrf;
  84         struct interface *ifp;
  85         struct ospf6 *ospf6;
  86         struct listnode *node, *nnode;
  87
  88         frr_early_fini();
  89
  90         for (ALL_LIST_ELEMENTS(om6->ospf6, node, nnode, ospf6)) {
  91                 vrf = vrf_lookup_by_id(ospf6->vrf_id);
  92                 ospf6_delete(ospf6);
  93                 ospf6 = NULL;
  94                 FOR_ALL_INTERFACES (vrf, ifp)
  95                         if (ifp->info != NULL)
  96                                 ospf6_interface_delete(ifp->info);
  97         }
  98
  99         bfd_gbl_exit();
 100
 101
 102         ospf6_message_terminate();
 103         ospf6_asbr_terminate();
 104         ospf6_lsa_terminate();
 105
 106         /* reverse access_list_init */
 107         access_list_reset();
 108
 109         /* reverse prefix_list_init */
 110         prefix_list_add_hook(NULL);
 111         prefix_list_delete_hook(NULL);
 112         prefix_list_reset();
 113
 114         vrf_terminate();
 115
 116         if (zclient) {
 117                 zclient_stop(zclient);
 118                 zclient_free(zclient);
 119         }
 120
 121         frr_fini();
 122         exit(status);
 123 }
 124
 125 /* SIGHUP handler. */
 126 static void sighup(void)
 127 {
 128         zlog_info("SIGHUP received");
 129 }
 130
 131 /* SIGINT handler. */
 132 static void sigint(void)
 133 {
 134         zlog_notice("Terminating on signal SIGINT");
 135         ospf6_exit(0);
 136 }
 137
 138 /* SIGTERM handler. */
 139 static void sigterm(void)
 140 {
 141         zlog_notice("Terminating on signal SIGTERM");
 142         ospf6_exit(0);
 143 }
 144
 145 /* SIGUSR1 handler. */
 146 static void sigusr1(void)
 147 {
 148         zlog_info("SIGUSR1 received");
 149         zlog_rotate();
 150 }
 151
 152 struct quagga_signal_t ospf6_signals[] = {
 153         {
 154                 .signal = SIGHUP,
 155                 .handler = &sighup,
 156         },
 157         {
 158                 .signal = SIGINT,
 159                 .handler = &sigint,
 160         },
 161         {
 162                 .signal = SIGTERM,
 163                 .handler = &sigterm,
 164         },
 165         {
 166                 .signal = SIGUSR1,
 167                 .handler = &sigusr1,
 168         },
 169 };
 170
 171 static const struct frr_yang_module_info *const ospf6d_yang_modules[] = {
 172         &frr_filter_info,
 173         &frr_interface_info,
 174         &frr_route_map_info,
 175         &frr_vrf_info,
 176         &frr_ospf_route_map_info,
 177         &frr_ospf6_route_map_info,
 178 };
 179
 180 FRR_DAEMON_INFO(ospf6d, OSPF6, .vty_port = OSPF6_VTY_PORT,
 181
 182                 .proghelp = "Implementation of the OSPFv3 routing protocol.",
 183
 184                 .signals = ospf6_signals,
 185                 .n_signals = array_size(ospf6_signals),
 186
 187                 .privs = &ospf6d_privs, .yang_modules = ospf6d_yang_modules,
 188                 .n_yang_modules = array_size(ospf6d_yang_modules),
 189 );
 190
 191 /* Main routine of ospf6d. Treatment of argument and starting ospf finite
 192    state machine is handled here. */
 193 int main(int argc, char *argv[], char *envp[])
 194 {
 195         int opt;
 196
 197         frr_preinit(&ospf6d_di, argc, argv);
 198         frr_opt_add("", longopts, "");
 199
 200         /* Command line argument treatment. */
 201         while (1) {
 202                 opt = frr_getopt(argc, argv, NULL);
 203
 204                 if (opt == EOF)
 205                         break;
 206
 207                 switch (opt) {
 208                 case 0:
 209                         break;
 210                 default:
 211                         frr_help_exit(1);
 212                         break;
 213                 }
 214         }
 215
 216         if (geteuid() != 0) {
 217                 errno = EPERM;
 218                 perror(ospf6d_di.progname);
 219                 exit(1);
 220         }
 221
 222         /* OSPF6 master init. */
 223         ospf6_master_init(frr_init());
 224
 225         /* thread master */
 226         master = om6->master;
 227
 228         ospf6_vrf_init();
 229         access_list_init();
 230         prefix_list_init();
 231
 232         /* initialize ospf6 */
 233         ospf6_init(master);
 234
 235         frr_config_fork();
 236         frr_run(master);
 237
 238         /* Not reached. */
 239         ospf6_exit(0);
 240 }