zebra/test_main.c

   1 /* main routine.
   2  * Copyright (C) 1997, 98 Kunihiro Ishiguro
   3  *
   4  * GNU Zebra is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License as published by the
   6  * Free Software Foundation; either version 2, or (at your option) any
   7  * later version.
   8  *
   9  * GNU Zebra is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with GNU Zebra; see the file COPYING.  If not, write to the Free
  16  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  17  * 02111-1307, USA.
  18  */
  19
  20 #include <zebra.h>
  21
  22 #include <lib/version.h>
  23 #include "getopt.h"
  24 #include "command.h"
  25 #include "thread.h"
  26 #include "filter.h"
  27 #include "memory.h"
  28 #include "zebra_memory.h"
  29 #include "memory_vty.h"
  30 #include "prefix.h"
  31 #include "log.h"
  32 #include "privs.h"
  33 #include "sigevent.h"
  34 #include "vrf.h"
  35
  36 #include "zebra/rib.h"
  37 #include "zebra/zebra_ns.h"
  38 #include "zebra/zserv.h"
  39 #include "zebra/zebra_vrf.h"
  40 #include "zebra/debug.h"
  41 #include "zebra/router-id.h"
  42 #include "zebra/interface.h"
  43
  44 /* Zebra instance */
  45 struct zebra_t zebrad =
  46 {
  47   .rtm_table_default = 0,
  48 };
  49
  50 /* process id. */
  51 pid_t pid;
  52
  53 /* Allow non-quagga entities to delete quagga routes */
  54 int allow_delete = 0;
  55
  56 /* zebra_rib's workqueue hold time. Private export for use by test code only */
  57 extern int rib_process_hold_time;
  58
  59 /* Pacify zclient.o in libzebra, which expects this variable. */
  60 struct thread_master *master;
  61
  62 /* Command line options. */
  63 struct option longopts[] =
  64 {
  65   { "batch",        no_argument,       NULL, 'b'},
  66   { "daemon",       no_argument,       NULL, 'd'},
  67   { "allow_delete", no_argument,       NULL, 'a'},
  68   { "config_file",  required_argument, NULL, 'f'},
  69   { "help",         no_argument,       NULL, 'h'},
  70   { "vty_addr",     required_argument, NULL, 'A'},
  71   { "vty_port",     required_argument, NULL, 'P'},
  72   { "version",      no_argument,       NULL, 'v'},
  73   { "rib_hold",     required_argument, NULL, 'r'},
  74   { 0 }
  75 };
  76
  77 zebra_capabilities_t _caps_p [] =
  78 {
  79   ZCAP_NET_ADMIN,
  80   ZCAP_SYS_ADMIN,
  81   ZCAP_NET_RAW,
  82 };
  83
  84 /* Default configuration file path. */
  85 char config_default[] = SYSCONFDIR DEFAULT_CONFIG_FILE;
  86
  87 /* Process ID saved for use by init system */
  88 const char *pid_file = PATH_ZEBRA_PID;
  89
  90 /* Help information display. */
  91 static void
  92 usage (char *progname, int status)
  93 {
  94   if (status != 0)
  95     fprintf (stderr, "Try `%s --help' for more information.\n", progname);
  96   else
  97     {
  98       printf ("Usage : %s [OPTION...]\n\n"\
  99               "Daemon which manages kernel routing table management and "\
 100               "redistribution between different routing protocols.\n\n"\
 101               "-b, --batch        Runs in batch mode\n"\
 102               "-d, --daemon       Runs in daemon mode\n"\
 103               "-a, --allow_delete Allow other processes to delete Quagga Routes\n" \
 104               "-f, --config_file  Set configuration file name\n"\
 105               "-A, --vty_addr     Set vty's bind address\n"\
 106               "-P, --vty_port     Set vty's port number\n"\
 107               "-r, --rib_hold     Set rib-queue hold time\n"\
 108               "-v, --version      Print program version\n"\
 109               "-h, --help         Display this help and exit\n"\
 110               "\n"\
 111               "Report bugs to %s\n", progname, FRR_BUG_ADDRESS);
 112     }
 113
 114   exit (status);
 115 }
 116
 117 static ifindex_t test_ifindex = 0;
 118
 119 /* testrib commands */
 120 DEFUN (test_interface_state,
 121        test_interface_state_cmd,
 122        "state (up|down)",
 123        "configure interface\n"
 124        "up\n"
 125        "down\n")
 126 {
 127   VTY_DECLVAR_CONTEXT (interface, ifp);
 128   if (argc < 1)
 129     return CMD_WARNING;
 130
 131   if (ifp->ifindex == IFINDEX_INTERNAL)
 132     {
 133       ifp->ifindex = ++test_ifindex;
 134       ifp->mtu = 1500;
 135       ifp->flags = IFF_BROADCAST|IFF_MULTICAST;
 136     }
 137
 138   switch (argv[0][0])
 139     {
 140       case 'u':
 141         SET_FLAG (ifp->flags, IFF_UP);
 142         if_add_update (ifp);
 143         printf ("up\n");
 144         break;
 145       case 'd':
 146         UNSET_FLAG (ifp->flags, IFF_UP);
 147         if_delete_update (ifp);
 148         printf ("down\n");
 149         break;
 150       default:
 151         return CMD_WARNING;
 152     }
 153   return CMD_SUCCESS;
 154 }
 155
 156 static void
 157 test_cmd_init (void)
 158 {
 159   install_element (INTERFACE_NODE, &test_interface_state_cmd);
 160 }
 161
 162 /* SIGHUP handler. */
 163 static void
 164 sighup (void)
 165 {
 166   zlog_info ("SIGHUP received");
 167
 168   /* Reload of config file. */
 169   ;
 170 }
 171
 172 /* SIGINT handler. */
 173 static void
 174 sigint (void)
 175 {
 176   zlog_notice ("Terminating on signal");
 177
 178   exit (0);
 179 }
 180
 181 /* SIGUSR1 handler. */
 182 static void
 183 sigusr1 (void)
 184 {
 185   zlog_rotate (NULL);
 186 }
 187
 188 struct quagga_signal_t zebra_signals[] =
 189 {
 190   {
 191     .signal = SIGHUP,
 192     .handler = &sighup,
 193   },
 194   {
 195     .signal = SIGUSR1,
 196     .handler = &sigusr1,
 197   },
 198   {
 199     .signal = SIGINT,
 200     .handler = &sigint,
 201   },
 202   {
 203     .signal = SIGTERM,
 204     .handler = &sigint,
 205   },
 206 };
 207 /* Main startup routine. */
 208 int
 209 main (int argc, char **argv)
 210 {
 211   char *p;
 212   char *vty_addr = NULL;
 213   int vty_port = 0;
 214   int batch_mode = 0;
 215   int daemon_mode = 0;
 216   char *config_file = NULL;
 217   char *progname;
 218   struct thread thread;
 219
 220   /* Set umask before anything for security */
 221   umask (0027);
 222
 223   /* preserve my name */
 224   progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]);
 225
 226   zlog_default = openzlog (progname, ZLOG_ZEBRA, 0,
 227                            LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON);
 228
 229   while (1)
 230     {
 231       int opt;
 232
 233       opt = getopt_long (argc, argv, "bdaf:hA:P:r:v", longopts, 0);
 234
 235       if (opt == EOF)
 236         break;
 237
 238       switch (opt)
 239         {
 240         case 0:
 241           break;
 242         case 'b':
 243           batch_mode = 1;
 244         case 'd':
 245           daemon_mode = 1;
 246           break;
 247         case 'a':
 248           allow_delete =1;
 249           break;
 250         case 'f':
 251           config_file = optarg;
 252           break;
 253         case 'A':
 254           vty_addr = optarg;
 255           break;
 256         case 'P':
 257           /* Deal with atoi() returning 0 on failure, and zebra not
 258              listening on zebra port... */
 259           if (strcmp(optarg, "0") == 0)
 260             {
 261               vty_port = 0;
 262               break;
 263             }
 264           vty_port = atoi (optarg);
 265           break;
 266         case 'r':
 267           rib_process_hold_time = atoi(optarg);
 268           break;
 269         case 'v':
 270           print_version (progname);
 271           exit (0);
 272           break;
 273         case 'h':
 274           usage (progname, 0);
 275           break;
 276         default:
 277           usage (progname, 1);
 278           break;
 279         }
 280     }
 281
 282   /* port and conf file mandatory */
 283   if (!vty_port || !config_file)
 284     {
 285       fprintf (stderr, "Error: --vty_port and --config_file arguments"
 286                        " are both required\n");
 287       usage (progname, 1);
 288     }
 289
 290   /* Make master thread emulator. */
 291   zebrad.master = thread_master_create ();
 292
 293   /* Vty related initialize. */
 294   signal_init (zebrad.master, array_size(zebra_signals), zebra_signals);
 295   cmd_init (1);
 296   vty_config_lockless ();
 297   vty_init (zebrad.master);
 298   memory_init ();
 299   zebra_debug_init ();
 300   zebra_if_init ();
 301   test_cmd_init ();
 302
 303   /* Zebra related initialize. */
 304   rib_init ();
 305   access_list_init ();
 306
 307   /* Make kernel routing socket. */
 308   zebra_vrf_init ();
 309   zebra_vty_init();
 310
 311   /* Configuration file read*/
 312   vty_read_config (config_file, config_default);
 313
 314   /* Clean up rib. */
 315   rib_weed_tables ();
 316
 317   /* Exit when zebra is working in batch mode. */
 318   if (batch_mode)
 319     exit (0);
 320
 321   /* Daemonize. */
 322   if (daemon_mode && daemon (0, 0) < 0)
 323     {
 324       perror("daemon start failed");
 325       exit (1);
 326     }
 327
 328   /* Needed for BSD routing socket. */
 329   pid = getpid ();
 330
 331   /* Make vty server socket. */
 332   vty_serv_sock (vty_addr, vty_port, "/tmp/test_zebra");
 333
 334   /* Print banner. */
 335   zlog_notice ("Zebra %s starting: vty@%d", FRR_VERSION, vty_port);
 336
 337   while (thread_fetch (zebrad.master, &thread))
 338     thread_call (&thread);
 339
 340   /* Not reached... */
 341   return 0;
 342 }