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 libfrr, 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 = "testzebra.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 zebra 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   int idx_up_down = 1;
 128   VTY_DECLVAR_CONTEXT (interface, ifp);
 129
 130   if (ifp->ifindex == IFINDEX_INTERNAL)
 131     {
 132       ifp->ifindex = ++test_ifindex;
 133       ifp->mtu = 1500;
 134       ifp->flags = IFF_BROADCAST|IFF_MULTICAST;
 135     }
 136
 137   switch (argv[idx_up_down]->arg[0])
 138     {
 139       case 'u':
 140         SET_FLAG (ifp->flags, IFF_UP);
 141         if_add_update (ifp);
 142         printf ("up\n");
 143         break;
 144       case 'd':
 145         UNSET_FLAG (ifp->flags, IFF_UP);
 146         if_delete_update (ifp);
 147         printf ("down\n");
 148         break;
 149       default:
 150         return CMD_WARNING;
 151     }
 152   return CMD_SUCCESS;
 153 }
 154
 155 static void
 156 test_cmd_init (void)
 157 {
 158   install_element (INTERFACE_NODE, &test_interface_state_cmd);
 159 }
 160
 161 /* SIGHUP handler. */
 162 static void
 163 sighup (void)
 164 {
 165   zlog_info ("SIGHUP received");
 166
 167   /* Reload of config file. */
 168   ;
 169 }
 170
 171 /* SIGINT handler. */
 172 static void
 173 sigint (void)
 174 {
 175   zlog_notice ("Terminating on signal");
 176
 177   exit (0);
 178 }
 179
 180 /* SIGUSR1 handler. */
 181 static void
 182 sigusr1 (void)
 183 {
 184   zlog_rotate();
 185 }
 186
 187 struct quagga_signal_t zebra_signals[] =
 188 {
 189   {
 190     .signal = SIGHUP,
 191     .handler = &sighup,
 192   },
 193   {
 194     .signal = SIGUSR1,
 195     .handler = &sigusr1,
 196   },
 197   {
 198     .signal = SIGINT,
 199     .handler = &sigint,
 200   },
 201   {
 202     .signal = SIGTERM,
 203     .handler = &sigint,
 204   },
 205 };
 206 /* Main startup routine. */
 207 int
 208 main (int argc, char **argv)
 209 {
 210   char *p;
 211   char *vty_addr = NULL;
 212   int vty_port = 0;
 213   int batch_mode = 0;
 214   int daemon_mode = 0;
 215   char *config_file = NULL;
 216   char *progname;
 217   struct thread thread;
 218
 219   /* Set umask before anything for security */
 220   umask (0027);
 221
 222   /* preserve my name */
 223   progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]);
 224
 225   openzlog(progname, "ZEBRA", 0, LOG_CONS | LOG_NDELAY | LOG_PID, LOG_DAEMON);
 226
 227   while (1)
 228     {
 229       int opt;
 230
 231       opt = getopt_long (argc, argv, "bdaf:hA:P:r:v", longopts, 0);
 232
 233       if (opt == EOF)
 234         break;
 235
 236       switch (opt)
 237         {
 238         case 0:
 239           break;
 240         case 'b':
 241           batch_mode = 1;
 242         case 'd':
 243           daemon_mode = 1;
 244           break;
 245         case 'a':
 246           allow_delete =1;
 247           break;
 248         case 'f':
 249           config_file = optarg;
 250           break;
 251         case 'A':
 252           vty_addr = optarg;
 253           break;
 254         case 'P':
 255           /* Deal with atoi() returning 0 on failure, and zebra not
 256              listening on zebra port... */
 257           if (strcmp(optarg, "0") == 0)
 258             {
 259               vty_port = 0;
 260               break;
 261             }
 262           vty_port = atoi (optarg);
 263           break;
 264         case 'r':
 265           rib_process_hold_time = atoi(optarg);
 266           break;
 267         case 'v':
 268           print_version (progname);
 269           exit (0);
 270           break;
 271         case 'h':
 272           usage (progname, 0);
 273           break;
 274         default:
 275           usage (progname, 1);
 276           break;
 277         }
 278     }
 279
 280   /* port and conf file mandatory */
 281   if (!vty_port || !config_file)
 282     {
 283       fprintf (stderr, "Error: --vty_port and --config_file arguments"
 284                        " are both required\n");
 285       usage (progname, 1);
 286     }
 287
 288   /* Make master thread emulator. */
 289   zebrad.master = thread_master_create ();
 290
 291   /* Vty related initialize. */
 292   signal_init (zebrad.master, array_size(zebra_signals), zebra_signals);
 293   cmd_init (1);
 294   vty_config_lockless ();
 295   vty_init (zebrad.master);
 296   memory_init ();
 297   zebra_debug_init ();
 298   zebra_if_init ();
 299   test_cmd_init ();
 300
 301   /* Zebra related initialize. */
 302   rib_init ();
 303   access_list_init ();
 304
 305   /* Make kernel routing socket. */
 306   zebra_vrf_init ();
 307   zebra_vty_init();
 308
 309   /* Configuration file read*/
 310   vty_read_config (config_file, config_default);
 311
 312   /* Clean up rib. */
 313   rib_weed_tables ();
 314
 315   /* Exit when zebra is working in batch mode. */
 316   if (batch_mode)
 317     exit (0);
 318
 319   /* Daemonize. */
 320   if (daemon_mode && daemon (0, 0) < 0)
 321     {
 322       perror("daemon start failed");
 323       exit (1);
 324     }
 325
 326   /* Needed for BSD routing socket. */
 327   pid = getpid ();
 328
 329   /* Make vty server socket. */
 330   vty_serv_sock (vty_addr, vty_port, "/tmp/test_zebra");
 331
 332   /* Print banner. */
 333   zlog_notice ("Zebra %s starting: vty@%d", FRR_VERSION, vty_port);
 334
 335   while (thread_fetch (zebrad.master, &thread))
 336     thread_call (&thread);
 337
 338   /* Not reached... */
 339   return 0;
 340 }