main.c

   1 /*
   2  * Copyright (C) 2014 John Crispin <blogic@openwrt.org>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU Lesser General Public License version 2.1
   6  * as published by the Free Software Foundation
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #include <sys/stat.h>
  15 #include <sys/types.h>
  16
  17 #include <time.h>
  18 #include <stdio.h>
  19 #include <fcntl.h>
  20 #include <getopt.h>
  21 #include <resolv.h>
  22 #include <unistd.h>
  23 #include <sys/types.h>
  24 #include <arpa/inet.h>
  25 #include <sys/socket.h>
  26 #include <netinet/in.h>
  27 #include <arpa/nameser.h>
  28
  29 #include <libubus.h>
  30 #include <libubox/uloop.h>
  31
  32 #include "dns.h"
  33 #include "ubus.h"
  34 #include "util.h"
  35 #include "cache.h"
  36 #include "service.h"
  37 #include "announce.h"
  38 #include "interface.h"
  39
  40 static void
  41 signal_shutdown(int signal)
  42 {
  43         uloop_end();
  44 }
  45
  46 int
  47 main(int argc, char **argv)
  48 {
  49         int ch, ttl;
  50
  51         uloop_init();
  52
  53         while ((ch = getopt(argc, argv, "t:i:d")) != -1) {
  54                 switch (ch) {
  55                 case 't':
  56                         ttl = atoi(optarg);
  57                         if (ttl > 0)
  58                                 announce_ttl = ttl;
  59                         else
  60                                 fprintf(stderr, "invalid ttl\n");
  61                         break;
  62                 case 'd':
  63                         debug++;
  64                         break;
  65                 case 'i':
  66                         interface_add(optarg);
  67                         break;
  68                 default:
  69                         return -1;
  70                 }
  71         }
  72
  73         signal(SIGPIPE, SIG_IGN);
  74         signal(SIGTERM, signal_shutdown);
  75         signal(SIGKILL, signal_shutdown);
  76
  77         if (cache_init())
  78                 return -1;
  79
  80         service_init();
  81
  82         ubus_startup();
  83         uloop_run();
  84         uloop_done();
  85
  86         cache_cleanup();
  87         service_cleanup();
  88         vlist_flush(&interfaces);
  89
  90         return 0;
  91 }