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/* gettime.c - Wrapper for time functions
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* Copyright (C) 1998, 2002 Free Software Foundation, Inc.
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* This file is part of GnuPG.
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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#ifdef HAVE_LANGINFO_H
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static unsigned long timewarp;
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static enum { NORMAL = 0, FROZEN, FUTURE, PAST } timemode;
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/* Wrapper for the time(3). We use this here so we can fake the time
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time_t current = time (NULL);
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if (timemode == NORMAL)
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else if (timemode == FROZEN)
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else if (timemode == FUTURE)
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return current + timewarp;
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return current - timewarp;
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/* Return the current time (possibly faked) in ISO format. */
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gnupg_get_isotime (gnupg_isotime_t timebuf)
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time_t atime = gnupg_get_time ();
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tp = gmtime_r (&atime, &tmbuf);
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sprintf (timebuf,"%04d%02d%02dT%02d%02d%02d",
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1900 + tp->tm_year, tp->tm_mon+1, tp->tm_mday,
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tp->tm_hour, tp->tm_min, tp->tm_sec);
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/* set the time to NEWTIME so that gnupg_get_time returns a time
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starting with this one. With FREEZE set to 1 the returned time
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will never change. Just for completeness, a value of (time_t)-1
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for NEWTIME gets you back to rality. Note that this is obviously
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not thread-safe but this is not required. */
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gnupg_set_time (time_t newtime, int freeze)
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time_t current = time (NULL);
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if ( newtime == (time_t)-1 || current == newtime)
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else if (newtime > current)
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timewarp = newtime - current;
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timewarp = current - newtime;
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/* Returns true when we are in timewarp mode */
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gnupg_faked_time_p (void)
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/* This function is used by gpg because OpenPGP defines the timestamp
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as an unsigned 32 bit value. */
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make_timestamp (void)
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time_t t = gnupg_get_time ();
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log_fatal ("gnupg_get_time() failed\n");
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* Scan a date string and return a timestamp.
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* The only supported format is "yyyy-mm-dd"
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* Returns 0 for an invalid date.
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scan_isodatestr( const char *string )
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int year, month, day;
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if( strlen(string) != 10 || string[4] != '-' || string[7] != '-' )
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for( i=0; i < 4; i++ )
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if( !digitp (string+i) )
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if( !digitp (string+5) || !digitp(string+6) )
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if( !digitp(string+8) || !digitp(string+9) )
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month = atoi(string+5);
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day = atoi(string+8);
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/* some basic checks */
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if( year < 1970 || month < 1 || month > 12 || day < 1 || day > 31 )
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memset( &tmbuf, 0, sizeof tmbuf );
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tmbuf.tm_mon = month-1;
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tmbuf.tm_year = year - 1900;
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stamp = mktime( &tmbuf );
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if( stamp == (time_t)-1 )
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add_days_to_timestamp( u32 stamp, u16 days )
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return stamp + days*86400L;
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* Return a string with a time value in the form: x Y, n D, n H
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strtimevalue( u32 value )
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static char buffer[30];
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unsigned int years, days, hours, minutes;
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minutes = value % 60;
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sprintf(buffer,"%uy%ud%uh%um", years, days, hours, minutes );
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return strchr( buffer, 'y' ) + 1;
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return strchr( buffer, 'd' ) + 1;
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* Note: this function returns GMT
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strtimestamp( u32 stamp )
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static char buffer[11+5];
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time_t atime = stamp;
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strcpy (buffer, "????" "-??" "-??");
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tp = gmtime( &atime );
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sprintf(buffer,"%04d-%02d-%02d",
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1900+tp->tm_year, tp->tm_mon+1, tp->tm_mday );
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* Note: this function returns local time
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asctimestamp( u32 stamp )
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static char buffer[50];
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#if defined (HAVE_STRFTIME) && defined (HAVE_NL_LANGINFO)
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time_t atime = stamp;
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strcpy (buffer, "????" "-??" "-??");
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tp = localtime( &atime );
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#if defined(HAVE_NL_LANGINFO)
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mem2str( fmt, nl_langinfo(D_T_FMT), DIM(fmt)-3 );
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if( strstr( fmt, "%Z" ) == NULL )
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/* NOTE: gcc -Wformat-noliteral will complain here. I have
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found no way to suppress this warning .*/
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strftime (buffer, DIM(buffer)-1, fmt, tp);
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/* FIXME: we should check whether the locale appends a " %Z"
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* These locales from glibc don't put the " %Z":
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* fi_FI hr_HR ja_JP lt_LT lv_LV POSIX ru_RU ru_SU sv_FI sv_SE zh_CN
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strftime( buffer, DIM(buffer)-1, "%c %Z", tp );
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buffer[DIM(buffer)-1] = 0;
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mem2str( buffer, asctime(tp), DIM(buffer) );
added
removed
common/gettime.c
