util.h

   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 #ifndef _UTIL_H__
  15 #define _UTIL_H__
  16
  17 #include <stdint.h>
  18 #include <time.h>
  19
  20 #define DBG(level, fmt, ...) do { \
  21         if (debug >= level) \
  22                 fprintf(stderr, "mdnsd: %s (%d): " fmt, __func__, __LINE__, ## __VA_ARGS__); \
  23         } while (0)
  24
  25 #define MDNS_BUF_LEN    (8 * 1024)
  26 #define HOSTNAME_LEN    256
  27
  28 extern int debug;
  29 extern uint8_t mdns_buf[MDNS_BUF_LEN];
  30 extern char mdns_hostname[HOSTNAME_LEN];
  31 extern char mdns_hostname_local[HOSTNAME_LEN + 6];
  32
  33 extern void get_hostname(void);
  34 extern uint32_t rand_time_delta(uint32_t t);
  35 extern time_t monotonic_time(void);
  36
  37 #endif