sharpd/sharp_main.c

   1 /*
   2  * SHARP - main code
   3  * Copyright (C) Cumulus Networks, Inc.
   4  *               Donald Sharp
   5  *
   6  * This file is part of FRR.
   7  *
   8  * FRR is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2, or (at your option) any
  11  * later version.
  12  *
  13  * FRR is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; see the file COPYING; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  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 "privs.h"
  39 #include "sigevent.h"
  40 #include "zclient.h"
  41 #include "keychain.h"
  42 #include "distribute.h"
  43 #include "libfrr.h"
  44 #include "routemap.h"
  45 #include "nexthop_group.h"
  46 #include "link_state.h"
  47
  48 #include "sharp_zebra.h"
  49 #include "sharp_vty.h"
  50 #include "sharp_globals.h"
  51 #include "sharp_nht.h"
  52
  53 DEFINE_MGROUP(SHARPD, "sharpd");
  54
  55 zebra_capabilities_t _caps_p[] = {
  56 };
  57
  58 struct zebra_privs_t sharp_privs = {
  59 #if defined(FRR_USER) && defined(FRR_GROUP)
  60         .user = FRR_USER,
  61         .group = FRR_GROUP,
  62 #endif
  63 #if defined(VTY_GROUP)
  64         .vty_group = VTY_GROUP,
  65 #endif
  66         .caps_p = _caps_p,
  67         .cap_num_p = array_size(_caps_p),
  68         .cap_num_i = 0};
  69
  70 struct option longopts[] = {{0}};
  71
  72 /* Master of threads. */
  73 struct thread_master *master;
  74
  75 /* SIGHUP handler. */
  76 static void sighup(void)
  77 {
  78         zlog_info("SIGHUP received");
  79 }
  80
  81 /* SIGINT / SIGTERM handler. */
  82 static void sigint(void)
  83 {
  84         zlog_notice("Terminating on signal");
  85
  86         frr_fini();
  87
  88         exit(0);
  89 }
  90
  91 /* SIGUSR1 handler. */
  92 static void sigusr1(void)
  93 {
  94         zlog_rotate();
  95 }
  96
  97 struct frr_signal_t sharp_signals[] = {
  98         {
  99                 .signal = SIGHUP,
 100                 .handler = &sighup,
 101         },
 102         {
 103                 .signal = SIGUSR1,
 104                 .handler = &sigusr1,
 105         },
 106         {
 107                 .signal = SIGINT,
 108                 .handler = &sigint,
 109         },
 110         {
 111                 .signal = SIGTERM,
 112                 .handler = &sigint,
 113         },
 114 };
 115
 116 #define SHARP_VTY_PORT 2614
 117
 118 static const struct frr_yang_module_info *const sharpd_yang_modules[] = {
 119         &frr_filter_info,
 120         &frr_interface_info,
 121         &frr_route_map_info,
 122         &frr_vrf_info,
 123 };
 124
 125 FRR_DAEMON_INFO(sharpd, SHARP, .vty_port = SHARP_VTY_PORT,
 126
 127                 .proghelp = "Implementation of a Sharp of routes daemon.",
 128
 129                 .signals = sharp_signals,
 130                 .n_signals = array_size(sharp_signals),
 131
 132                 .privs = &sharp_privs, .yang_modules = sharpd_yang_modules,
 133                 .n_yang_modules = array_size(sharpd_yang_modules),
 134 );
 135
 136 struct sharp_global sg;
 137
 138 static void sharp_global_init(void)
 139 {
 140         memset(&sg, 0, sizeof(sg));
 141         sg.nhs = list_new();
 142         sg.ted = NULL;
 143         sg.srv6_locators = list_new();
 144 }
 145
 146 static void sharp_start_configuration(void)
 147 {
 148         zlog_debug("Configuration has started to be read");
 149 }
 150
 151 static void sharp_end_configuration(void)
 152 {
 153         zlog_debug("Configuration has finished being read");
 154 }
 155
 156 int main(int argc, char **argv, char **envp)
 157 {
 158         frr_preinit(&sharpd_di, argc, argv);
 159         frr_opt_add("", longopts, "");
 160
 161         while (1) {
 162                 int opt;
 163
 164                 opt = frr_getopt(argc, argv, NULL);
 165
 166                 if (opt == EOF)
 167                         break;
 168
 169                 switch (opt) {
 170                 case 0:
 171                         break;
 172                 default:
 173                         frr_help_exit(1);
 174                 }
 175         }
 176
 177         master = frr_init();
 178
 179         cmd_init_config_callbacks(sharp_start_configuration,
 180                                   sharp_end_configuration);
 181         sharp_global_init();
 182
 183         sharp_nhgroup_init();
 184         vrf_init(NULL, NULL, NULL, NULL, NULL);
 185
 186         sharp_zebra_init();
 187
 188         /* Get configuration file. */
 189         sharp_vty_init();
 190
 191         frr_config_fork();
 192         frr_run(master);
 193
 194         /* Not reached. */
 195         return 0;
 196 }