gecko/security/nss/lib/util/sectime.c
2008-10-23 02:38:29 +02:00

195 lines
5.8 KiB
C

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Netscape security libraries.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1994-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "prlong.h"
#include "prtime.h"
#include "secder.h"
#include "secitem.h"
#include "secerr.h"
static const PRTime January1st2050 = LL_INIT(0x0008f81e, 0x1b098000);
static char *DecodeUTCTime2FormattedAscii (SECItem *utcTimeDER, char *format);
static char *DecodeGeneralizedTime2FormattedAscii (SECItem *generalizedTimeDER, char *format);
/* convert DER utc time to ascii time string */
char *
DER_UTCTimeToAscii(SECItem *utcTime)
{
return (DecodeUTCTime2FormattedAscii (utcTime, "%a %b %d %H:%M:%S %Y"));
}
/* convert DER utc time to ascii time string, only include day, not time */
char *
DER_UTCDayToAscii(SECItem *utctime)
{
return (DecodeUTCTime2FormattedAscii (utctime, "%a %b %d, %Y"));
}
/* convert DER generalized time to ascii time string, only include day,
not time */
char *
DER_GeneralizedDayToAscii(SECItem *gentime)
{
return (DecodeGeneralizedTime2FormattedAscii (gentime, "%a %b %d, %Y"));
}
/* convert DER generalized or UTC time to ascii time string, only include
day, not time */
char *
DER_TimeChoiceDayToAscii(SECItem *timechoice)
{
switch (timechoice->type) {
case siUTCTime:
return DER_UTCDayToAscii(timechoice);
case siGeneralizedTime:
return DER_GeneralizedDayToAscii(timechoice);
default:
PORT_Assert(0);
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return NULL;
}
}
char *
CERT_UTCTime2FormattedAscii (int64 utcTime, char *format)
{
PRExplodedTime printableTime;
char *timeString;
/* Converse time to local time and decompose it into components */
PR_ExplodeTime(utcTime, PR_LocalTimeParameters, &printableTime);
timeString = (char *)PORT_Alloc(256);
if ( timeString ) {
if ( ! PR_FormatTime( timeString, 256, format, &printableTime )) {
PORT_Free(timeString);
timeString = NULL;
}
}
return (timeString);
}
char *CERT_GenTime2FormattedAscii (int64 genTime, char *format)
{
PRExplodedTime printableTime;
char *timeString;
/* Decompose time into components */
PR_ExplodeTime(genTime, PR_GMTParameters, &printableTime);
timeString = (char *)PORT_Alloc(256);
if ( timeString ) {
if ( ! PR_FormatTime( timeString, 256, format, &printableTime )) {
PORT_Free(timeString);
timeString = NULL;
PORT_SetError(SEC_ERROR_OUTPUT_LEN);
}
}
return (timeString);
}
/* convert DER utc time to ascii time string, The format of the time string
depends on the input "format"
*/
static char *
DecodeUTCTime2FormattedAscii (SECItem *utcTimeDER, char *format)
{
int64 utcTime;
int rv;
rv = DER_UTCTimeToTime(&utcTime, utcTimeDER);
if (rv) {
return(NULL);
}
return (CERT_UTCTime2FormattedAscii (utcTime, format));
}
/* convert DER utc time to ascii time string, The format of the time string
depends on the input "format"
*/
static char *
DecodeGeneralizedTime2FormattedAscii (SECItem *generalizedTimeDER, char *format)
{
PRTime generalizedTime;
int rv;
rv = DER_GeneralizedTimeToTime(&generalizedTime, generalizedTimeDER);
if (rv) {
return(NULL);
}
return (CERT_GeneralizedTime2FormattedAscii (generalizedTime, format));
}
/* decode a SECItem containing either a SEC_ASN1_GENERALIZED_TIME
or a SEC_ASN1_UTC_TIME */
SECStatus DER_DecodeTimeChoice(PRTime* output, const SECItem* input)
{
switch (input->type) {
case siGeneralizedTime:
return DER_GeneralizedTimeToTime(output, input);
case siUTCTime:
return DER_UTCTimeToTime(output, input);
default:
PORT_SetError(SEC_ERROR_INVALID_ARGS);
PORT_Assert(0);
return SECFailure;
}
}
/* encode a PRTime to an ASN.1 DER SECItem containing either a
SEC_ASN1_GENERALIZED_TIME or a SEC_ASN1_UTC_TIME */
SECStatus DER_EncodeTimeChoice(PRArenaPool* arena, SECItem* output, PRTime input)
{
if (LL_CMP(input, >, January1st2050)) {
return DER_TimeToGeneralizedTimeArena(arena, output, input);
} else {
return DER_TimeToUTCTimeArena(arena, output, input);
}
}