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