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 */
  20
  21 #include <zebra.h>
  22
  23 #include "log.h"
  24 #include "privs.h"
  25 #include "version.h"
  26 #include <getopt.h>
  27 #include "command.h"
  28 #include "thread.h"
  29 #include <signal.h>
  30
  31 #include "memory.h"
  32 #include "vrf.h"
  33 #include "memory_vty.h"
  34 #include "filter.h"
  35 #include "vty.h"
  36 #include "sigevent.h"
  37 #include "version.h"
  38 #include "prefix.h"
  39 #include "plist.h"
  40 #include "vrf.h"
  41
  42 #include "pimd.h"
  43 #include "pim_version.h"
  44 #include "pim_signals.h"
  45 #include "pim_zebra.h"
  46
  47 #ifdef PIM_ZCLIENT_DEBUG
  48 extern int zclient_debug;
  49 #endif
  50
  51 extern struct host host;
  52
  53 char config_default[] = SYSCONFDIR PIMD_DEFAULT_CONFIG;
  54
  55 struct option longopts[] = {
  56   { "daemon",        no_argument,       NULL, 'd'},
  57   { "config_file",   required_argument, NULL, 'f'},
  58   { "pid_file",      required_argument, NULL, 'i'},
  59   { "vty_addr",      required_argument, NULL, 'A'},
  60   { "vty_port",      required_argument, NULL, 'P'},
  61   { "version",       no_argument,       NULL, 'v'},
  62   { "debug_zclient", no_argument,       NULL, 'Z'},
  63   { "help",          no_argument,       NULL, 'h'},
  64   { 0 }
  65 };
  66
  67 /* pimd privileges */
  68 zebra_capabilities_t _caps_p [] =
  69 {
  70   ZCAP_NET_ADMIN,
  71   ZCAP_SYS_ADMIN,
  72   ZCAP_NET_RAW,
  73 };
  74
  75 /* pimd privileges to run with */
  76 struct zebra_privs_t pimd_privs =
  77 {
  78 #if defined(QUAGGA_USER) && defined(QUAGGA_GROUP)
  79   .user = QUAGGA_USER,
  80   .group = QUAGGA_GROUP,
  81 #endif
  82 #ifdef VTY_GROUP
  83   .vty_group = VTY_GROUP,
  84 #endif
  85   .caps_p = _caps_p,
  86   .cap_num_p = sizeof(_caps_p)/sizeof(_caps_p[0]),
  87   .cap_num_i = 0
  88 };
  89
  90 char* progname;
  91 const char *pid_file = PATH_PIMD_PID;
  92
  93 static void usage(int status)
  94 {
  95   if (status != 0)
  96     fprintf (stderr, "Try `%s --help' for more information.\n", progname);
  97   else {
  98     printf ("Usage : %s [OPTION...]\n\
  99 Daemon which manages PIM.\n\n\
 100 -d, --daemon         Run in daemon mode\n\
 101 -f, --config_file    Set configuration file name\n\
 102 -i, --pid_file       Set process identifier file name\n\
 103 -z, --socket         Set path of zebra socket\n\
 104 -A, --vty_addr       Set vty's bind address\n\
 105 -P, --vty_port       Set vty's port number\n\
 106 -v, --version        Print program version\n\
 107 "
 108
 109 #ifdef PIM_ZCLIENT_DEBUG
 110 "\
 111 -Z, --debug_zclient  Enable zclient debugging\n\
 112 "
 113 #endif
 114
 115 "\
 116 -h, --help           Display this help and exit\n\
 117 \n\
 118 Report bugs to %s\n", progname, PIMD_BUG_ADDRESS);
 119   }
 120
 121   exit (status);
 122 }
 123
 124
 125 int main(int argc, char** argv, char** envp) {
 126   char *p;
 127   char *vty_addr = NULL;
 128   int vty_port = -1;
 129   int daemon_mode = 0;
 130   char *config_file = NULL;
 131   char *zebra_sock_path = NULL;
 132   struct thread thread;
 133
 134   umask(0027);
 135
 136   progname = ((p = strrchr(argv[0], '/')) ? ++p : argv[0]);
 137
 138   zlog_default = openzlog(progname, ZLOG_PIM, 0,
 139                           LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON);
 140   zprivs_init (&pimd_privs);
 141 #if defined(HAVE_CUMULUS)
 142   zlog_set_level (NULL, ZLOG_DEST_SYSLOG, zlog_default->default_lvl);
 143 #endif
 144
 145   /* this while just reads the options */
 146   while (1) {
 147     int opt;
 148
 149     opt = getopt_long (argc, argv, "df:i:z:A:P:vZh", longopts, 0);
 150
 151     if (opt == EOF)
 152       break;
 153
 154     switch (opt) {
 155     case 0:
 156       break;
 157     case 'd':
 158       daemon_mode = 1;
 159       break;
 160     case 'f':
 161       config_file = optarg;
 162       break;
 163     case 'i':
 164       pid_file = optarg;
 165       break;
 166     case 'z':
 167       zebra_sock_path = optarg;
 168       break;
 169     case 'A':
 170       vty_addr = optarg;
 171       break;
 172     case 'P':
 173       vty_port = atoi (optarg);
 174       break;
 175     case 'v':
 176       printf(PIMD_PROGNAME " version %s\n", PIMD_VERSION);
 177       print_version(QUAGGA_PROGNAME);
 178       exit (0);
 179       break;
 180 #ifdef PIM_ZCLIENT_DEBUG
 181     case 'Z':
 182       zclient_debug = 1;
 183       break;
 184 #endif
 185     case 'h':
 186       usage (0);
 187       break;
 188     default:
 189       usage (1);
 190       break;
 191     }
 192   }
 193
 194   master = thread_master_create();
 195
 196   zlog_notice("Quagga %s " PIMD_PROGNAME " %s starting",
 197               QUAGGA_VERSION, PIMD_VERSION);
 198
 199   /*
 200    * Initializations
 201    */
 202   pim_signals_init();
 203   cmd_init(1);
 204   vty_init(master);
 205   memory_init();
 206   vrf_init ();
 207   access_list_init();
 208   prefix_list_init ();
 209   pim_route_map_init ();
 210   pim_init();
 211
 212   /*
 213    * Initialize zclient "update" and "lookup" sockets
 214    */
 215   pim_zebra_init(zebra_sock_path);
 216
 217   zlog_notice("Loading configuration - begin");
 218
 219   /* Get configuration file. */
 220   vty_read_config(config_file, config_default);
 221
 222   /*
 223     Starting from here zlog_* functions will log according configuration
 224    */
 225
 226   zlog_notice("Loading configuration - end");
 227
 228   /* Change to the daemon program. */
 229   if (daemon_mode) {
 230     if (daemon(0, 0)) {
 231       zlog_warn("failed to daemonize");
 232     }
 233   }
 234
 235   /* Process ID file creation. */
 236   pid_output(pid_file);
 237
 238   /* Create pimd VTY socket */
 239   if (vty_port < 0)
 240     vty_port = PIMD_VTY_PORT;
 241   vty_serv_sock(vty_addr, vty_port, PIM_VTYSH_PATH);
 242
 243   zlog_notice("Quagga %s " PIMD_PROGNAME " %s starting, VTY interface at port TCP %d",
 244               QUAGGA_VERSION, PIMD_VERSION, vty_port);
 245
 246 #ifdef PIM_DEBUG_BYDEFAULT
 247   zlog_notice("PIM_DEBUG_BYDEFAULT: Enabling all debug commands");
 248   PIM_DO_DEBUG_PIM_EVENTS;
 249   PIM_DO_DEBUG_PIM_PACKETS;
 250   PIM_DO_DEBUG_PIM_TRACE;
 251   PIM_DO_DEBUG_IGMP_EVENTS;
 252   PIM_DO_DEBUG_IGMP_PACKETS;
 253   PIM_DO_DEBUG_IGMP_TRACE;
 254   PIM_DO_DEBUG_ZEBRA;
 255 #endif
 256
 257 #ifdef PIM_ZCLIENT_DEBUG
 258   zlog_notice("PIM_ZCLIENT_DEBUG: zclient debugging is supported, mode is %s (see option -Z)",
 259               zclient_debug ? "ON" : "OFF");
 260 #endif
 261
 262 #ifdef PIM_CHECK_RECV_IFINDEX_SANITY
 263   zlog_notice("PIM_CHECK_RECV_IFINDEX_SANITY: will match sock/recv ifindex");
 264 #ifdef PIM_REPORT_RECV_IFINDEX_MISMATCH
 265   zlog_notice("PIM_REPORT_RECV_IFINDEX_MISMATCH: will report sock/recv ifindex mismatch");
 266 #endif
 267 #endif
 268
 269 #ifdef PIM_UNEXPECTED_KERNEL_UPCALL
 270   zlog_notice("PIM_UNEXPECTED_KERNEL_UPCALL: report unexpected kernel upcall");
 271 #endif
 272
 273 #ifdef HAVE_CLOCK_MONOTONIC
 274   zlog_notice("HAVE_CLOCK_MONOTONIC");
 275 #else
 276   zlog_notice("!HAVE_CLOCK_MONOTONIC");
 277 #endif
 278
 279   while (thread_fetch(master, &thread))
 280     thread_call(&thread);
 281
 282   zlog_err("%s %s: thread_fetch() returned NULL, exiting",
 283            __FILE__, __PRETTY_FUNCTION__);
 284
 285   /* never reached */
 286   return 0;
 287 }