2 * Copyright (C) 2014 John Crispin <blogic@openwrt.org>
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
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.
14 #include <sys/socket.h>
15 #include <sys/ioctl.h>
16 #include <sys/types.h>
18 #include <sys/utsname.h>
20 #include <linux/sockios.h>
21 #include <arpa/inet.h>
31 #include <libubox/uloop.h>
36 uint8_t mdns_buf[MDNS_BUF_LEN];
39 char mdns_hostname[HOSTNAME_LEN];
40 char mdns_hostname_local[HOSTNAME_LEN + 6];
43 rand_time_delta(uint32_t t)
46 int fd = open("/dev/urandom", O_RDONLY);
51 if (read(fd, &val, sizeof(val)) == sizeof(val)) {
55 val = t + (rand() % range) - (range / 2);
65 void get_hostname(void)
67 struct utsname utsname;
70 mdns_hostname_local[0] = 0;
72 if (uname(&utsname) < 0)
75 snprintf(mdns_hostname, sizeof(mdns_hostname), "%s", utsname.nodename);
76 snprintf(mdns_hostname_local, sizeof(mdns_hostname_local), "%s.local", utsname.nodename);