mirror of
git://git.gnupg.org/gnupg.git
synced 2024-11-04 20:38:50 +01:00
88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
|
/* gettime.c - Wrapper for time functions
|
||
|
|
* Copyright (C) 2002 Free Software Foundation, Inc.
|
||
|
|
*
|
||
|
|
* This file is part of GnuPG.
|
||
|
|
*
|
||
|
|
* GnuPG is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* GnuPG is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <config.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <time.h>
|
||
|
|
|
||
|
|
#include "util.h"
|
||
|
|
|
||
|
|
static unsigned long timewarp;
|
||
|
|
static enum { NORMAL = 0, FROZEN, FUTURE, PAST } timemode;
|
||
|
|
|
||
|
|
/* Wrapper for the time(3). We use this here so we can fake the time
|
||
|
|
for tests */
|
||
|
|
time_t
|
||
|
|
gnupg_get_time ()
|
||
|
|
{
|
||
|
|
time_t current = time (NULL);
|
||
|
|
if (timemode == NORMAL)
|
||
|
|
return current;
|
||
|
|
else if (timemode == FROZEN)
|
||
|
|
return timewarp;
|
||
|
|
else if (timemode == FUTURE)
|
||
|
|
return current + timewarp;
|
||
|
|
else
|
||
|
|
return current - timewarp;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* set the time to NEWTIME so that gnupg_get_time returns a time
|
||
|
|
starting with this one. With FREEZE set to 1 the returned time
|
||
|
|
will never change. Just for completeness, a value of (time_t)-1
|
||
|
|
for NEWTIME gets you back to rality. Note that this is obviously
|
||
|
|
not thread-safe but this is not required. */
|
||
|
|
void
|
||
|
|
gnupg_set_time (time_t newtime, int freeze)
|
||
|
|
{
|
||
|
|
time_t current = time (NULL);
|
||
|
|
|
||
|
|
if ( newtime == (time_t)-1 || current == newtime)
|
||
|
|
{
|
||
|
|
timemode = NORMAL;
|
||
|
|
timewarp = 0;
|
||
|
|
}
|
||
|
|
else if (freeze)
|
||
|
|
{
|
||
|
|
timemode = FROZEN;
|
||
|
|
timewarp = current;
|
||
|
|
}
|
||
|
|
else if (newtime > current)
|
||
|
|
{
|
||
|
|
timemode = FUTURE;
|
||
|
|
timewarp = newtime - current;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
timemode = PAST;
|
||
|
|
timewarp = current - newtime;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Returns true when we are in timewarp mode */
|
||
|
|
int
|
||
|
|
gnupg_faked_time_p (void)
|
||
|
|
{
|
||
|
|
return timemode;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|