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 #include "sharp_nht.h"
  51
  52 DEFINE_MGROUP(SHARPD, "sharpd");
  53
  54 zebra_capabilities_t _caps_p[] = {
  55 };
  56
  57 struct zebra_privs_t sharp_privs = {
  58 #if defined(FRR_USER) && defined(FRR_GROUP)
  59         .user = FRR_USER,
  60         .group = FRR_GROUP,
  61 #endif
  62 #if defined(VTY_GROUP)
  63         .vty_group = VTY_GROUP,
  64 #endif
  65         .caps_p = _caps_p,
  66         .cap_num_p = array_size(_caps_p),
  67         .cap_num_i = 0};
  68
  69 struct option longopts[] = {{0}};
  70
  71 /* Master of threads. */
  72 struct thread_master *master;
  73
  74 /* SIGHUP handler. */
  75 static void sighup(void)
  76 {
  77         zlog_info("SIGHUP received");
  78 }
  79
  80 /* SIGINT / SIGTERM handler. */
  81 static void sigint(void)
  82 {
  83         zlog_notice("Terminating on signal");
  84
  85         frr_fini();
  86
  87         exit(0);
  88 }
  89
  90 /* SIGUSR1 handler. */
  91 static void sigusr1(void)
  92 {
  93         zlog_rotate();
  94 }
  95
  96 struct quagga_signal_t sharp_signals[] = {
  97         {
  98                 .signal = SIGHUP,
  99                 .handler = &sighup,
 100         },
 101         {
 102                 .signal = SIGUSR1,
 103                 .handler = &sigusr1,
 104         },
 105         {
 106                 .signal = SIGINT,
 107                 .handler = &sigint,
 108         },
 109         {
 110                 .signal = SIGTERM,
 111                 .handler = &sigint,
 112         },
 113 };
 114
 115 #define SHARP_VTY_PORT 2614
 116
 117 static const struct frr_yang_module_info *const sharpd_yang_modules[] = {
 118         &frr_filter_info,
 119         &frr_interface_info,
 120         &frr_route_map_info,
 121         &frr_vrf_info,
 122 };
 123
 124 FRR_DAEMON_INFO(sharpd, SHARP, .vty_port = SHARP_VTY_PORT,
 125
 126                 .proghelp = "Implementation of a Sharp of routes daemon.",
 127
 128                 .signals = sharp_signals,
 129                 .n_signals = array_size(sharp_signals),
 130
 131                 .privs = &sharp_privs, .yang_modules = sharpd_yang_modules,
 132                 .n_yang_modules = array_size(sharpd_yang_modules),
 133 );
 134
 135 struct sharp_global sg;
 136
 137 static void sharp_global_init(void)
 138 {
 139         memset(&sg, 0, sizeof(sg));
 140         sg.nhs = list_new();
 141 }
 142
 143 static void sharp_start_configuration(void)
 144 {
 145         zlog_debug("Configuration has started to be read");
 146 }
 147
 148 static void sharp_end_configuration(void)
 149 {
 150         zlog_debug("Configuration has finished being read");
 151 }
 152
 153 int main(int argc, char **argv, char **envp)
 154 {
 155         frr_preinit(&sharpd_di, argc, argv);
 156         frr_opt_add("", longopts, "");
 157
 158         while (1) {
 159                 int opt;
 160
 161                 opt = frr_getopt(argc, argv, NULL);
 162
 163                 if (opt == EOF)
 164                         break;
 165
 166                 switch (opt) {
 167                 case 0:
 168                         break;
 169                 default:
 170                         frr_help_exit(1);
 171                         break;
 172                 }
 173         }
 174
 175         master = frr_init();
 176
 177         cmd_init_config_callbacks(sharp_start_configuration,
 178                                   sharp_end_configuration);
 179         sharp_global_init();
 180
 181         sharp_nhgroup_init();
 182         vrf_init(NULL, NULL, NULL, NULL, NULL);
 183
 184         sharp_zebra_init();
 185
 186         /* Get configuration file. */
 187         sharp_vty_init();
 188
 189         frr_config_fork();
 190         frr_run(master);
 191
 192         /* Not reached. */
 193         return 0;
 194 }