mDNSPosix/posix_utilities.c

   1 //
   2 //  posix_utilities.c
   3 //  mDNSResponder
   4 //
   5 //  Copyright (c) 2019 Apple Inc. All rights reserved.
   6 //
   7
   8 #include "posix_utilities.h"
   9 #include "mDNSEmbeddedAPI.h"
  10 #include <stdlib.h>                 // for NULL
  11 #include <stdio.h>                  // for snprintf
  12 #include <time.h>
  13 #include <sys/time.h>               // for gettimeofday
  14
  15 mDNSexport void getLocalTimestamp(char * const buffer, mDNSu32 buffer_len)
  16 {
  17     struct timeval      now;
  18     struct tm           local_time;
  19     char                date_time_str[32];
  20     char                time_zone_str[32];
  21
  22     gettimeofday(&now, NULL);
  23     localtime_r(&now.tv_sec, &local_time);
  24
  25     strftime(date_time_str, sizeof(date_time_str), "%F %T", &local_time);
  26     strftime(time_zone_str, sizeof(time_zone_str), "%z", &local_time);
  27     snprintf(buffer, buffer_len, "%s.%06lu%s", date_time_str, (unsigned long)now.tv_usec, time_zone_str);
  28 }