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
  47 #include "sharp_zebra.h"
  48 #include "sharp_vty.h"
  49 #include "sharp_globals.h"
  50
  51 DEFINE_MGROUP(SHARPD, "sharpd")
  52
  53 zebra_capabilities_t _caps_p[] = {
  54 };
  55
  56 struct zebra_privs_t sharp_privs = {
  57 #if defined(FRR_USER) && defined(FRR_GROUP)
  58         .user = FRR_USER,
  59         .group = FRR_GROUP,
  60 #endif
  61 #if defined(VTY_GROUP)
  62         .vty_group = VTY_GROUP,
  63 #endif
  64         .caps_p = _caps_p,
  65         .cap_num_p = array_size(_caps_p),
  66         .cap_num_i = 0};
  67
  68 struct option longopts[] = {{0}};
  69
  70 /* Master of threads. */
  71 struct thread_master *master;
  72
  73 /* SIGHUP handler. */
  74 static void sighup(void)
  75 {
  76         zlog_info("SIGHUP received");
  77 }
  78
  79 /* SIGINT / SIGTERM handler. */
  80 static void sigint(void)
  81 {
  82         zlog_notice("Terminating on signal");
  83
  84         frr_fini();
  85
  86         exit(0);
  87 }
  88
  89 /* SIGUSR1 handler. */
  90 static void sigusr1(void)
  91 {
  92         zlog_rotate();
  93 }
  94
  95 struct quagga_signal_t sharp_signals[] = {
  96         {
  97                 .signal = SIGHUP,
  98                 .handler = &sighup,
  99         },
 100         {
 101                 .signal = SIGUSR1,
 102                 .handler = &sigusr1,
 103         },
 104         {
 105                 .signal = SIGINT,
 106                 .handler = &sigint,
 107         },
 108         {
 109                 .signal = SIGTERM,
 110                 .handler = &sigint,
 111         },
 112 };
 113
 114 #define SHARP_VTY_PORT 2614
 115
 116 static const struct frr_yang_module_info *const sharpd_yang_modules[] = {
 117         &frr_filter_info,
 118         &frr_interface_info,
 119         &frr_route_map_info,
 120         &frr_vrf_info,
 121 };
 122
 123 FRR_DAEMON_INFO(sharpd, SHARP, .vty_port = SHARP_VTY_PORT,
 124
 125                 .proghelp = "Implementation of a Sharp of routes daemon.",
 126
 127                 .signals = sharp_signals,
 128                 .n_signals = array_size(sharp_signals),
 129
 130                 .privs = &sharp_privs, .yang_modules = sharpd_yang_modules,
 131                 .n_yang_modules = array_size(sharpd_yang_modules), )
 132
 133 struct sharp_global sg;
 134
 135 static void sharp_global_init(void)
 136 {
 137         memset(&sg, 0, sizeof(sg));
 138         sg.nhs = list_new();
 139 }
 140
 141 int main(int argc, char **argv, char **envp)
 142 {
 143         frr_preinit(&sharpd_di, argc, argv);
 144         frr_opt_add("", longopts, "");
 145
 146         while (1) {
 147                 int opt;
 148
 149                 opt = frr_getopt(argc, argv, NULL);
 150
 151                 if (opt == EOF)
 152                         break;
 153
 154                 switch (opt) {
 155                 case 0:
 156                         break;
 157                 default:
 158                         frr_help_exit(1);
 159                         break;
 160                 }
 161         }
 162
 163         master = frr_init();
 164
 165         sharp_global_init();
 166
 167         nexthop_group_init(NULL, NULL, NULL, NULL);
 168         vrf_init(NULL, NULL, NULL, NULL, NULL);
 169
 170         access_list_init();
 171         route_map_init();
 172
 173         sharp_zebra_init();
 174
 175         /* Get configuration file. */
 176         sharp_vty_init();
 177
 178         frr_config_fork();
 179         frr_run(master);
 180
 181         /* Not reached. */
 182         return 0;
 183 }