michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "prtime.h"
michael@0: #include "secder.h"
michael@0: #include "secitem.h"
michael@0: #include "secerr.h"
michael@0: 
michael@0: static char *DecodeUTCTime2FormattedAscii (SECItem *utcTimeDER, char *format);
michael@0: static char *DecodeGeneralizedTime2FormattedAscii (SECItem *generalizedTimeDER, char *format);
michael@0: 
michael@0: /* convert DER utc time to ascii time string */
michael@0: char *
michael@0: DER_UTCTimeToAscii(SECItem *utcTime)
michael@0: {
michael@0:     return (DecodeUTCTime2FormattedAscii (utcTime, "%a %b %d %H:%M:%S %Y"));
michael@0: }
michael@0: 
michael@0: /* convert DER utc time to ascii time string, only include day, not time */
michael@0: char *
michael@0: DER_UTCDayToAscii(SECItem *utctime)
michael@0: {
michael@0:     return (DecodeUTCTime2FormattedAscii (utctime, "%a %b %d, %Y"));
michael@0: }
michael@0: 
michael@0: /* convert DER generalized time to ascii time string, only include day,
michael@0:    not time */
michael@0: char *
michael@0: DER_GeneralizedDayToAscii(SECItem *gentime)
michael@0: {
michael@0:     return (DecodeGeneralizedTime2FormattedAscii (gentime, "%a %b %d, %Y"));
michael@0: }
michael@0: 
michael@0: /* convert DER generalized or UTC time to ascii time string, only include
michael@0:    day, not time */
michael@0: char *
michael@0: DER_TimeChoiceDayToAscii(SECItem *timechoice)
michael@0: {
michael@0:     switch (timechoice->type) {
michael@0: 
michael@0:     case siUTCTime:
michael@0:         return DER_UTCDayToAscii(timechoice);
michael@0: 
michael@0:     case siGeneralizedTime:
michael@0:         return DER_GeneralizedDayToAscii(timechoice);
michael@0: 
michael@0:     default:
michael@0:         PORT_Assert(0);
michael@0:         PORT_SetError(SEC_ERROR_INVALID_ARGS);
michael@0:         return NULL;
michael@0:     }
michael@0: }
michael@0: 
michael@0: char *
michael@0: CERT_UTCTime2FormattedAscii(PRTime utcTime, char *format)
michael@0: {
michael@0:     PRExplodedTime printableTime; 
michael@0:     char *timeString;
michael@0:    
michael@0:     /* Converse time to local time and decompose it into components */
michael@0:     PR_ExplodeTime(utcTime, PR_LocalTimeParameters, &printableTime);
michael@0:     
michael@0:     timeString = (char *)PORT_Alloc(256);
michael@0: 
michael@0:     if ( timeString ) {
michael@0:         if ( ! PR_FormatTime( timeString, 256, format, &printableTime )) {
michael@0:             PORT_Free(timeString);
michael@0:             timeString = NULL;
michael@0:         }
michael@0:     }
michael@0:     
michael@0:     return (timeString);
michael@0: }
michael@0: 
michael@0: char *CERT_GenTime2FormattedAscii(PRTime genTime, char *format)
michael@0: {
michael@0:     PRExplodedTime printableTime; 
michael@0:     char *timeString;
michael@0:    
michael@0:     /* Decompose time into components */
michael@0:     PR_ExplodeTime(genTime, PR_GMTParameters, &printableTime);
michael@0:     
michael@0:     timeString = (char *)PORT_Alloc(256);
michael@0: 
michael@0:     if ( timeString ) {
michael@0:         if ( ! PR_FormatTime( timeString, 256, format, &printableTime )) {
michael@0:             PORT_Free(timeString);
michael@0:             timeString = NULL;
michael@0:             PORT_SetError(SEC_ERROR_OUTPUT_LEN);
michael@0:         }
michael@0:     }
michael@0:     
michael@0:     return (timeString);
michael@0: }
michael@0: 
michael@0: 
michael@0: /* convert DER utc time to ascii time string, The format of the time string
michael@0:    depends on the input "format"
michael@0:  */
michael@0: static char *
michael@0: DecodeUTCTime2FormattedAscii (SECItem *utcTimeDER,  char *format)
michael@0: {
michael@0:     PRTime utcTime;
michael@0:     int rv;
michael@0:    
michael@0:     rv = DER_UTCTimeToTime(&utcTime, utcTimeDER);
michael@0:     if (rv) {
michael@0:         return(NULL);
michael@0:     }
michael@0:     return (CERT_UTCTime2FormattedAscii (utcTime, format));
michael@0: }
michael@0: 
michael@0: /* convert DER utc time to ascii time string, The format of the time string
michael@0:    depends on the input "format"
michael@0:  */
michael@0: static char *
michael@0: DecodeGeneralizedTime2FormattedAscii (SECItem *generalizedTimeDER,  char *format)
michael@0: {
michael@0:     PRTime generalizedTime;
michael@0:     int rv;
michael@0:    
michael@0:     rv = DER_GeneralizedTimeToTime(&generalizedTime, generalizedTimeDER);
michael@0:     if (rv) {
michael@0:         return(NULL);
michael@0:     }
michael@0:     return (CERT_GeneralizedTime2FormattedAscii (generalizedTime, format));
michael@0: }
michael@0: 
michael@0: /* decode a SECItem containing either a SEC_ASN1_GENERALIZED_TIME 
michael@0:    or a SEC_ASN1_UTC_TIME */
michael@0: 
michael@0: SECStatus DER_DecodeTimeChoice(PRTime* output, const SECItem* input)
michael@0: {
michael@0:     switch (input->type) {
michael@0:         case siGeneralizedTime:
michael@0:             return DER_GeneralizedTimeToTime(output, input);
michael@0: 
michael@0:         case siUTCTime:
michael@0:             return DER_UTCTimeToTime(output, input);
michael@0: 
michael@0:         default:
michael@0:             PORT_SetError(SEC_ERROR_INVALID_ARGS);
michael@0:             PORT_Assert(0);
michael@0:             return SECFailure;
michael@0:     }
michael@0: }
michael@0: 
michael@0: /* encode a PRTime to an ASN.1 DER SECItem containing either a
michael@0:    SEC_ASN1_GENERALIZED_TIME or a SEC_ASN1_UTC_TIME */
michael@0: 
michael@0: SECStatus DER_EncodeTimeChoice(PLArenaPool* arena, SECItem* output, PRTime input)
michael@0: {
michael@0:     SECStatus rv;
michael@0: 
michael@0:     rv = DER_TimeToUTCTimeArena(arena, output, input);
michael@0:     if (rv == SECSuccess || PORT_GetError() != SEC_ERROR_INVALID_ARGS) {
michael@0:         return rv;
michael@0:     }
michael@0:     return DER_TimeToGeneralizedTimeArena(arena, output, input);
michael@0: }