/*
 * 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 Netscape are 
 * Copyright (C) 1994-2000 Netscape Communications Corporation.  All
 * Rights Reserved.
 * 
 * Contributor(s):
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL"), in which case the provisions of the GPL are applicable 
 * instead of those above.  If you wish to allow use of your 
 * version of this file only under the terms of the GPL and not to
 * allow others to use your version of this file under the MPL,
 * indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by
 * the GPL.  If you do not delete the provisions above, a recipient
 * may use your version of this file under either the MPL or the
 * GPL.
 */

/*
 * Code for dealing with x.509 v3 crl and crl entries extensions.
 *
 * $Id: crlv2.c,v 1.1 2000/03/31 19:43:00 relyea%netscape.com Exp $
 */

#include "cert.h"
#include "secitem.h"
#include "secoid.h"
#include "secoidt.h"
#include "secder.h"
#include "secasn1.h"
#include "certxutl.h"

SECStatus
CERT_FindCRLExtensionByOID(CERTCrl *crl, SECItem *oid, SECItem *value)
{
    return (cert_FindExtensionByOID (crl->extensions, oid, value));
}
    

SECStatus
CERT_FindCRLExtension(CERTCrl *crl, int tag, SECItem *value)
{
    return (cert_FindExtension (crl->extensions, tag, value));
}


/* Callback to set extensions and adjust verison */
static void
SetCrlExts(void *object, CERTCertExtension **exts)
{
    CERTCrl *crl = (CERTCrl *)object;

    crl->extensions = exts;
    DER_SetUInteger (crl->arena, &crl->version, SEC_CRL_VERSION_2);
}

void *
CERT_StartCRLExtensions(CERTCrl *crl)
{
    return (cert_StartExtensions ((void *)crl, crl->arena, SetCrlExts));
}


SECStatus CERT_FindCRLNumberExten (CERTCrl *crl, CERTCrlNumber *value)
{
    SECItem encodedExtenValue;
    SECStatus rv;

    encodedExtenValue.data = NULL;
    encodedExtenValue.len = 0;

    rv = cert_FindExtension
	 (crl->extensions, SEC_OID_X509_CRL_NUMBER, &encodedExtenValue);
    if ( rv != SECSuccess )
	return (rv);

    rv = SEC_ASN1DecodeItem (NULL, value, SEC_IntegerTemplate,
			     &encodedExtenValue);
    PORT_Free (encodedExtenValue.data);
    return (rv);
}

SECStatus CERT_FindCRLReasonExten (CERTCrl *crl, SECItem *value)
{
    return (CERT_FindBitStringExtension
	    (crl->extensions, SEC_OID_X509_REASON_CODE, value));    
}

SECStatus CERT_FindInvalidDateExten (CERTCrl *crl, int64 *value)
{
    SECItem encodedExtenValue;
    SECItem decodedExtenValue = {siBuffer,0};
    SECStatus rv;

    encodedExtenValue.data = decodedExtenValue.data = NULL;
    encodedExtenValue.len = decodedExtenValue.len = 0;

    rv = cert_FindExtension
	 (crl->extensions, SEC_OID_X509_INVALID_DATE, &encodedExtenValue);
    if ( rv != SECSuccess )
	return (rv);

    rv = SEC_ASN1DecodeItem (NULL, &decodedExtenValue,
			     SEC_GeneralizedTimeTemplate, &encodedExtenValue);
    if (rv != SECSuccess)
	return (rv);
    rv = DER_GeneralizedTimeToTime(value, &encodedExtenValue);
    PORT_Free (decodedExtenValue.data);
    PORT_Free (encodedExtenValue.data);
    return (rv);
}