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>
19 #include <arpa/inet.h>
29 #include <libubox/uloop.h>
30 #include <libubox/utils.h>
35 uint8_t mdns_buf[MDNS_BUF_LEN];
38 char mdns_hostname[HOSTNAME_LEN];
39 char mdns_hostname_local[HOSTNAME_LEN + 6];
42 rand_time_delta(uint32_t t)
45 int fd = open("/dev/urandom", O_RDONLY);
50 if (read(fd, &val, sizeof(val)) == sizeof(val)) {
54 val = t + (rand() % range) - (range / 2);
64 void get_hostname(void)
66 struct utsname utsname;
69 mdns_hostname_local[0] = 0;
71 if (uname(&utsname) < 0)
74 snprintf(mdns_hostname, sizeof(mdns_hostname), "%s", utsname.nodename);
75 snprintf(mdns_hostname_local, sizeof(mdns_hostname_local), "%s.local", utsname.nodename);
78 time_t monotonic_time(void)
81 clock_gettime(CLOCK_MONOTONIC, &ts);