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 int cfg_proto = 0;
  41 int cfg_no_subnet = 0;
  42
  43 static void
  44 signal_shutdown(int signal)
  45 {
  46         uloop_end();
  47 }
  48
  49 int
  50 main(int argc, char **argv)
  51 {
  52         int ch, ttl;
  53
  54         uloop_init();
  55
  56         while ((ch = getopt(argc, argv, "t:i:d46n")) != -1) {
  57                 switch (ch) {
  58                 case 't':
  59                         ttl = atoi(optarg);
  60                         if (ttl > 0)
  61                                 announce_ttl = ttl;
  62                         else
  63                                 fprintf(stderr, "invalid ttl\n");
  64                         break;
  65                 case 'd':
  66                         debug++;
  67                         break;
  68                 case 'i':
  69                         interface_add(optarg);
  70                         break;
  71                 case '4':
  72                         cfg_proto = 4;
  73                         break;
  74                 case '6':
  75                         cfg_proto = 6;
  76                         break;
  77                 case 'n':
  78                         cfg_no_subnet = 1;
  79                         break;
  80
  81                 default:
  82                         return -1;
  83                 }
  84         }
  85
  86         signal(SIGPIPE, SIG_IGN);
  87         signal(SIGTERM, signal_shutdown);
  88         signal(SIGKILL, signal_shutdown);
  89
  90         if (cache_init())
  91                 return -1;
  92
  93         ubus_startup();
  94
  95         service_init(0);
  96
  97         uloop_run();
  98         uloop_done();
  99
 100         interface_shutdown();
 101         cache_cleanup(NULL);
 102         service_cleanup();
 103         vlist_flush(&interfaces);
 104
 105         return 0;
 106 }