isisd/isis_main.c

   1 /*
   2  * IS-IS Rout(e)ing protocol - isis_main.c
   3  *
   4  * Copyright (C) 2001,2002   Sampo Saaristo
   5  *                           Tampere University of Technology
   6  *                           Institute of Communications Engineering
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public Licenseas published by the Free
  10  * Software Foundation; either version 2 of the License, or (at your option)
  11  * any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  16  * 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
  23 #include <zebra.h>
  24
  25 #include "getopt.h"
  26 #include "thread.h"
  27 #include "log.h"
  28 #include <lib/version.h>
  29 #include "command.h"
  30 #include "vty.h"
  31 #include "memory.h"
  32 #include "memory_vty.h"
  33 #include "stream.h"
  34 #include "if.h"
  35 #include "privs.h"
  36 #include "sigevent.h"
  37 #include "filter.h"
  38 #include "plist.h"
  39 #include "zclient.h"
  40 #include "vrf.h"
  41 #include "qobj.h"
  42 #include "libfrr.h"
  43
  44 #include "isisd/dict.h"
  45 #include "isisd/isis_constants.h"
  46 #include "isisd/isis_common.h"
  47 #include "isisd/isis_flags.h"
  48 #include "isisd/isis_circuit.h"
  49 #include "isisd/isisd.h"
  50 #include "isisd/isis_dynhn.h"
  51 #include "isisd/isis_spf.h"
  52 #include "isisd/isis_route.h"
  53 #include "isisd/isis_routemap.h"
  54 #include "isisd/isis_zebra.h"
  55 #include "isisd/isis_te.h"
  56 #include "isisd/isis_errors.h"
  57 #include "isisd/isis_vty_common.h"
  58
  59 /* Default configuration file name */
  60 #define ISISD_DEFAULT_CONFIG "isisd.conf"
  61 /* Default vty port */
  62 #define ISISD_VTY_PORT       2608
  63 #define FABRICD_VTY_PORT     2618
  64
  65 /* isisd privileges */
  66 zebra_capabilities_t _caps_p[] = {ZCAP_NET_RAW, ZCAP_BIND};
  67
  68 struct zebra_privs_t isisd_privs = {
  69 #if defined(FRR_USER)
  70         .user = FRR_USER,
  71 #endif
  72 #if defined FRR_GROUP
  73         .group = FRR_GROUP,
  74 #endif
  75 #ifdef VTY_GROUP
  76         .vty_group = VTY_GROUP,
  77 #endif
  78         .caps_p = _caps_p,
  79         .cap_num_p = sizeof(_caps_p) / sizeof(*_caps_p),
  80         .cap_num_i = 0};
  81
  82 /* isisd options */
  83 struct option longopts[] = {{0}};
  84
  85 /* Master of threads. */
  86 struct thread_master *master;
  87
  88 /*
  89  * Prototypes.
  90  */
  91 void sighup(void);
  92 void sigint(void);
  93 void sigterm(void);
  94 void sigusr1(void);
  95
  96
  97 static __attribute__((__noreturn__)) void terminate(int i)
  98 {
  99         isis_zebra_stop();
 100         exit(i);
 101 }
 102
 103 /*
 104  * Signal handlers
 105  */
 106
 107 void sighup(void)
 108 {
 109         zlog_notice("SIGHUP/reload is not implemented for isisd");
 110         return;
 111 }
 112
 113 __attribute__((__noreturn__)) void sigint(void)
 114 {
 115         zlog_notice("Terminating on signal SIGINT");
 116         terminate(0);
 117 }
 118
 119 __attribute__((__noreturn__)) void sigterm(void)
 120 {
 121         zlog_notice("Terminating on signal SIGTERM");
 122         terminate(0);
 123 }
 124
 125 void sigusr1(void)
 126 {
 127         zlog_debug("SIGUSR1 received");
 128         zlog_rotate();
 129 }
 130
 131 struct quagga_signal_t isisd_signals[] = {
 132         {
 133                 .signal = SIGHUP,
 134                 .handler = &sighup,
 135         },
 136         {
 137                 .signal = SIGUSR1,
 138                 .handler = &sigusr1,
 139         },
 140         {
 141                 .signal = SIGINT,
 142                 .handler = &sigint,
 143         },
 144         {
 145                 .signal = SIGTERM,
 146                 .handler = &sigterm,
 147         },
 148 };
 149
 150 #ifdef FABRICD
 151 FRR_DAEMON_INFO(fabricd, OPEN_FABRIC, .vty_port = FABRICD_VTY_PORT,
 152
 153                 .proghelp = "Implementation of the OpenFabric routing protocol.",
 154 #else
 155 FRR_DAEMON_INFO(isisd, ISIS, .vty_port = ISISD_VTY_PORT,
 156
 157                 .proghelp = "Implementation of the IS-IS routing protocol.",
 158 #endif
 159                 .copyright =
 160                         "Copyright (c) 2001-2002 Sampo Saaristo,"
 161                         " Ofer Wald and Hannes Gredler",
 162
 163                 .signals = isisd_signals,
 164                 .n_signals = array_size(isisd_signals),
 165
 166                 .privs = &isisd_privs, )
 167
 168 /*
 169  * Main routine of isisd. Parse arguments and handle IS-IS state machine.
 170  */
 171 int main(int argc, char **argv, char **envp)
 172 {
 173         int opt;
 174
 175 #ifdef FABRICD
 176         frr_preinit(&fabricd_di, argc, argv);
 177 #else
 178         frr_preinit(&isisd_di, argc, argv);
 179 #endif
 180         frr_opt_add("", longopts, "");
 181
 182         /* Command line argument treatment. */
 183         while (1) {
 184                 opt = frr_getopt(argc, argv, NULL);
 185
 186                 if (opt == EOF)
 187                         break;
 188
 189                 switch (opt) {
 190                 case 0:
 191                         break;
 192                 default:
 193                         frr_help_exit(1);
 194                         break;
 195                 }
 196         }
 197
 198         vty_config_lockless();
 199         /* thread master */
 200         master = frr_init();
 201
 202         /*
 203          *  initializations
 204          */
 205         isis_error_init();
 206         access_list_init();
 207         vrf_init(NULL, NULL, NULL, NULL, NULL);
 208         prefix_list_init();
 209         isis_init();
 210         isis_circuit_init();
 211         isis_vty_init();
 212         isis_spf_cmds_init();
 213         isis_redist_init();
 214         isis_route_map_init();
 215         isis_mpls_te_init();
 216
 217         /* create the global 'isis' instance */
 218         isis_new(1);
 219
 220         isis_zebra_init(master);
 221
 222         frr_config_fork();
 223         frr_run(master);
 224
 225         /* Not reached. */
 226         exit(0);
 227 }