staticd/static_main.c

   1 /*
   2  * STATICd - main code
   3  * Copyright (C) 2018 Cumulus Networks, Inc.
   4  *               Donald Sharp
   5  *
   6  * This program 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 Free
   8  * Software Foundation; either version 2 of the License, or (at your option)
   9  * any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * 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 #include <zebra.h>
  21
  22 #include <lib/version.h>
  23 #include "getopt.h"
  24 #include "thread.h"
  25 #include "command.h"
  26 #include "log.h"
  27 #include "memory.h"
  28 #include "privs.h"
  29 #include "sigevent.h"
  30 #include "libfrr.h"
  31 #include "vrf.h"
  32 #include "nexthop.h"
  33 #include "filter.h"
  34 #include "routing_nb.h"
  35
  36 #include "static_vrf.h"
  37 #include "static_vty.h"
  38 #include "static_routes.h"
  39 #include "static_zebra.h"
  40 #include "static_debug.h"
  41 #include "static_nb.h"
  42
  43 char backup_config_file[256];
  44
  45 bool mpls_enabled;
  46
  47 zebra_capabilities_t _caps_p[] = {
  48 };
  49
  50 struct zebra_privs_t static_privs = {
  51 #if defined(FRR_USER) && defined(FRR_GROUP)
  52         .user = FRR_USER,
  53         .group = FRR_GROUP,
  54 #endif
  55 #if defined(VTY_GROUP)
  56         .vty_group = VTY_GROUP,
  57 #endif
  58         .caps_p = _caps_p,
  59         .cap_num_p = array_size(_caps_p),
  60         .cap_num_i = 0};
  61
  62 struct option longopts[] = { { 0 } };
  63
  64 /* Master of threads. */
  65 struct thread_master *master;
  66
  67 static struct frr_daemon_info staticd_di;
  68 /* SIGHUP handler. */
  69 static void sighup(void)
  70 {
  71         zlog_info("SIGHUP received");
  72         vty_read_config(NULL, staticd_di.config_file, config_default);
  73 }
  74
  75 /* SIGINT / SIGTERM handler. */
  76 static void sigint(void)
  77 {
  78         zlog_notice("Terminating on signal");
  79
  80         static_vrf_terminate();
  81
  82         frr_fini();
  83
  84         exit(0);
  85 }
  86
  87 /* SIGUSR1 handler. */
  88 static void sigusr1(void)
  89 {
  90         zlog_rotate();
  91 }
  92
  93 struct frr_signal_t static_signals[] = {
  94         {
  95                 .signal = SIGHUP,
  96                 .handler = &sighup,
  97         },
  98         {
  99                 .signal = SIGUSR1,
 100                 .handler = &sigusr1,
 101         },
 102         {
 103                 .signal = SIGINT,
 104                 .handler = &sigint,
 105         },
 106         {
 107                 .signal = SIGTERM,
 108                 .handler = &sigint,
 109         },
 110 };
 111
 112 static const struct frr_yang_module_info *const staticd_yang_modules[] = {
 113         &frr_filter_info,
 114         &frr_interface_info,
 115         &frr_vrf_info,
 116         &frr_routing_info,
 117         &frr_staticd_info,
 118 };
 119
 120 #define STATIC_VTY_PORT 2616
 121
 122 FRR_DAEMON_INFO(staticd, STATIC, .vty_port = STATIC_VTY_PORT,
 123
 124                 .proghelp = "Implementation of STATIC.",
 125
 126                 .signals = static_signals,
 127                 .n_signals = array_size(static_signals),
 128
 129                 .privs = &static_privs, .yang_modules = staticd_yang_modules,
 130                 .n_yang_modules = array_size(staticd_yang_modules),
 131 );
 132
 133 int main(int argc, char **argv, char **envp)
 134 {
 135         frr_preinit(&staticd_di, argc, argv);
 136         frr_opt_add("", longopts, "");
 137
 138         while (1) {
 139                 int opt;
 140
 141                 opt = frr_getopt(argc, argv, NULL);
 142
 143                 if (opt == EOF)
 144                         break;
 145
 146                 switch (opt) {
 147                 case 0:
 148                         break;
 149                 default:
 150                         frr_help_exit(1);
 151                 }
 152         }
 153
 154         master = frr_init();
 155
 156         static_debug_init();
 157         static_vrf_init();
 158
 159         static_zebra_init();
 160         static_vty_init();
 161
 162         hook_register(routing_conf_event,
 163                       routing_control_plane_protocols_name_validate);
 164
 165         routing_control_plane_protocols_register_vrf_dependency();
 166
 167         snprintf(backup_config_file, sizeof(backup_config_file),
 168                  "%s/zebra.conf", frr_sysconfdir);
 169         staticd_di.backup_config_file = backup_config_file;
 170
 171         frr_config_fork();
 172         frr_run(master);
 173
 174         /* Not reached. */
 175         return 0;
 176 }