pimd/pim_main.c

   1 /*
   2   PIM for Quagga
   3   Copyright (C) 2008  Everton da Silva Marques
   4
   5   This program is free software; you can redistribute it and/or modify
   6   it under the terms of the GNU General Public License as published by
   7   the Free Software Foundation; either version 2 of the License, or
   8   (at your option) any later version.
   9
  10   This program is distributed in the hope that it will be useful, but
  11   WITHOUT ANY WARRANTY; without even the implied warranty of
  12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13   General Public License for more details.
  14
  15   You should have received a copy of the GNU General Public License
  16   along with this program; see the file COPYING; if not, write to the
  17   Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  18   MA 02110-1301 USA
  19 <<<<<<< HEAD
  20
  21 =======
  22 >>>>>>> origin/master
  23 */
  24
  25 #include <zebra.h>
  26
  27 #include "log.h"
  28 #include "privs.h"
  29 #include "version.h"
  30 #include <getopt.h>
  31 #include "command.h"
  32 #include "thread.h"
  33 #include <signal.h>
  34
  35 #include "memory.h"
  36 #include "vrf.h"
  37 #include "memory_vty.h"
  38 #include "filter.h"
  39 #include "vty.h"
  40 #include "sigevent.h"
  41 #include "version.h"
  42 #include "prefix.h"
  43 #include "plist.h"
  44 #include "vrf.h"
  45
  46 #include "pimd.h"
  47 #include "pim_version.h"
  48 #include "pim_signals.h"
  49 #include "pim_zebra.h"
  50 #include "pim_msdp.h"
  51 #include "pim_iface.h"
  52 #include "pim_rp.h"
  53
  54 extern struct host host;
  55
  56 char config_default[] = SYSCONFDIR PIMD_DEFAULT_CONFIG;
  57
  58 struct option longopts[] = {
  59   { "daemon",        no_argument,       NULL, 'd'},
  60   { "config_file",   required_argument, NULL, 'f'},
  61   { "pid_file",      required_argument, NULL, 'i'},
  62   { "vty_addr",      required_argument, NULL, 'A'},
  63   { "vty_port",      required_argument, NULL, 'P'},
  64   { "version",       no_argument,       NULL, 'v'},
  65   { "debug_zclient", no_argument,       NULL, 'Z'},
  66   { "help",          no_argument,       NULL, 'h'},
  67   { 0 }
  68 };
  69
  70 /* pimd privileges */
  71 zebra_capabilities_t _caps_p [] =
  72 {
  73   ZCAP_NET_ADMIN,
  74   ZCAP_SYS_ADMIN,
  75   ZCAP_NET_RAW,
  76   ZCAP_BIND,
  77 };
  78
  79 /* pimd privileges to run with */
  80 struct zebra_privs_t pimd_privs =
  81 {
  82 #if defined(FRR_USER) && defined(FRR_GROUP)
  83   .user = FRR_USER,
  84   .group = FRR_GROUP,
  85 #endif
  86 #ifdef VTY_GROUP
  87   .vty_group = VTY_GROUP,
  88 #endif
  89   .caps_p = _caps_p,
  90   .cap_num_p = sizeof(_caps_p)/sizeof(_caps_p[0]),
  91   .cap_num_i = 0
  92 };
  93
  94 char* progname;
  95 const char *pid_file = PATH_PIMD_PID;
  96
  97 static void usage(int status)
  98 {
  99   if (status != 0)
 100     fprintf (stderr, "Try `%s --help' for more information.\n", progname);
 101   else {
 102     printf ("Usage : %s [OPTION...]\n\
 103 Daemon which manages PIM.\n\n\
 104 -d, --daemon         Run in daemon mode\n\
 105 -f, --config_file    Set configuration file name\n\
 106 -i, --pid_file       Set process identifier file name\n\
 107 -z, --socket         Set path of zebra socket\n\
 108 -A, --vty_addr       Set vty's bind address\n\
 109 -P, --vty_port       Set vty's port number\n\
 110 -v, --version        Print program version\n\
 111 -h, --help           Display this help and exit\n\
 112 \n\
 113 Report bugs to %s\n", progname, PACKAGE_BUGREPORT);
 114   }
 115
 116   exit (status);
 117 }
 118
 119
 120 int main(int argc, char** argv, char** envp) {
 121   char *p;
 122   char *vty_addr = NULL;
 123   int vty_port = -1;
 124   int daemon_mode = 0;
 125   char *config_file = NULL;
 126   char *zebra_sock_path = NULL;
 127   struct thread thread;
 128
 129   umask(0027);
 130
 131   progname = ((p = strrchr(argv[0], '/')) ? ++p : argv[0]);
 132
 133   zlog_default = openzlog(progname, ZLOG_PIM, 0,
 134                           LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON);
 135   zprivs_init (&pimd_privs);
 136 #if defined(HAVE_CUMULUS)
 137   zlog_set_level (NULL, ZLOG_DEST_SYSLOG, zlog_default->default_lvl);
 138 #endif
 139
 140   /* this while just reads the options */
 141   while (1) {
 142     int opt;
 143
 144     opt = getopt_long (argc, argv, "df:i:z:A:P:vZh", longopts, 0);
 145
 146     if (opt == EOF)
 147       break;
 148
 149     switch (opt) {
 150     case 0:
 151       break;
 152     case 'd':
 153       daemon_mode = 1;
 154       break;
 155     case 'f':
 156       config_file = optarg;
 157       break;
 158     case 'i':
 159       pid_file = optarg;
 160       break;
 161     case 'z':
 162       zebra_sock_path = optarg;
 163       break;
 164     case 'A':
 165       vty_addr = optarg;
 166       break;
 167     case 'P':
 168       vty_port = atoi (optarg);
 169       break;
 170     case 'v':
 171       printf(PIMD_PROGNAME " version %s\n", PIMD_VERSION);
 172       print_version(progname);
 173       exit (0);
 174       break;
 175     case 'h':
 176       usage (0);
 177       break;
 178     default:
 179       usage (1);
 180       break;
 181     }
 182   }
 183
 184   master = thread_master_create();
 185
 186   zlog_notice("Quagga %s " PIMD_PROGNAME " %s starting",
 187               FRR_VERSION, PIMD_VERSION);
 188
 189   /*
 190    * Initializations
 191    */
 192   pim_signals_init();
 193   cmd_init(1);
 194   vty_init(master);
 195   memory_init();
 196   vrf_init ();
 197   access_list_init();
 198   prefix_list_init ();
 199   prefix_list_add_hook (pim_rp_prefix_list_update);
 200   prefix_list_delete_hook (pim_rp_prefix_list_update);
 201
 202   pim_route_map_init ();
 203   pim_init();
 204   pim_msdp_init (master);
 205
 206   /*
 207    * Initialize zclient "update" and "lookup" sockets
 208    */
 209   pim_zebra_init(zebra_sock_path);
 210
 211   zlog_notice("Loading configuration - begin");
 212
 213   /* Get configuration file. */
 214   vty_read_config(config_file, config_default);
 215
 216   /*
 217     Starting from here zlog_* functions will log according configuration
 218    */
 219
 220   zlog_notice("Loading configuration - end");
 221
 222   /* Change to the daemon program. */
 223   if (daemon_mode) {
 224     if (daemon(0, 0)) {
 225       zlog_warn("failed to daemonize");
 226     }
 227   }
 228
 229   /* Process ID file creation. */
 230   pid_output(pid_file);
 231
 232   /* Create pimd VTY socket */
 233   if (vty_port < 0)
 234     vty_port = PIMD_VTY_PORT;
 235   vty_serv_sock(vty_addr, vty_port, PIM_VTYSH_PATH);
 236
 237   zlog_notice("Quagga %s " PIMD_PROGNAME " %s starting, VTY interface at port TCP %d",
 238               FRR_VERSION, PIMD_VERSION, vty_port);
 239
 240 #ifdef PIM_DEBUG_BYDEFAULT
 241   zlog_notice("PIM_DEBUG_BYDEFAULT: Enabling all debug commands");
 242   PIM_DO_DEBUG_PIM_EVENTS;
 243   PIM_DO_DEBUG_PIM_PACKETS;
 244   PIM_DO_DEBUG_PIM_TRACE;
 245   PIM_DO_DEBUG_IGMP_EVENTS;
 246   PIM_DO_DEBUG_IGMP_PACKETS;
 247   PIM_DO_DEBUG_IGMP_TRACE;
 248   PIM_DO_DEBUG_ZEBRA;
 249 #endif
 250
 251 #ifdef PIM_CHECK_RECV_IFINDEX_SANITY
 252   zlog_notice("PIM_CHECK_RECV_IFINDEX_SANITY: will match sock/recv ifindex");
 253 #ifdef PIM_REPORT_RECV_IFINDEX_MISMATCH
 254   zlog_notice("PIM_REPORT_RECV_IFINDEX_MISMATCH: will report sock/recv ifindex mismatch");
 255 #endif
 256 #endif
 257
 258 #ifdef PIM_UNEXPECTED_KERNEL_UPCALL
 259   zlog_notice("PIM_UNEXPECTED_KERNEL_UPCALL: report unexpected kernel upcall");
 260 #endif
 261
 262   while (thread_fetch(master, &thread))
 263     thread_call(&thread);
 264
 265   zlog_err("%s %s: thread_fetch() returned NULL, exiting",
 266            __FILE__, __PRETTY_FUNCTION__);
 267
 268   /* never reached */
 269   return 0;
 270 }