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Sources/mdnsd/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 }
107 

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