FreeRDP/libfreerdp/utils/time.c
2012-10-08 23:02:04 -04:00

87 lines
2.1 KiB
C

/**
* FreeRDP: A Remote Desktop Protocol Implementation
* Time Utils
*
* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winpr/windows.h>
#include <freerdp/utils/time.h>
uint64 freerdp_windows_gmtime()
{
time_t unix_time;
uint64 windows_time;
gmtime(&unix_time);
windows_time = freerdp_get_windows_time_from_unix_time(unix_time);
return windows_time;
}
uint64 freerdp_get_windows_time_from_unix_time(time_t unix_time)
{
uint64 windows_time;
windows_time = (unix_time * 10000000) + 621355968000000000ULL;
return windows_time;
}
time_t freerdp_get_unix_time_from_windows_time(uint64 windows_time)
{
time_t unix_time;
unix_time = (windows_time - 621355968000000000ULL) / 10000000;
return unix_time;
}
time_t freerdp_get_unix_time_from_generalized_time(const char* generalized_time)
{
int Y, m, d;
int H, M, S;
struct tm gt;
time_t unix_time = 0;
/*
* GeneralizedTime:
*
* 12th November 1997 at 15:30:10,5 PM
*
* "19971112153010.5Z"
* "19971112173010.5+0200"
*/
memset(&gt, 0, sizeof(struct tm));
sscanf(generalized_time, "%4d%2d%2d%2d%2d%2d", &Y, &m, &d, &H, &M, &S);
gt.tm_year = Y - 1900; /* Year since 1900 */
gt.tm_mon = m; /* Months since January */
gt.tm_mday = d; /* Day of the month */
gt.tm_hour = H; /* Hour since midnight */
gt.tm_min = M; /* Minutes after the hour */
gt.tm_sec = S; /* Seconds after the minute */
unix_time = mktime(&gt);
return unix_time;
}