/* v3_akey.c */

/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL

 * project 1999.

 */

/* ====================================================================

 * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer. 

 *

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the

 *    distribution.

 *

 * 3. All advertising materials mentioning features or use of this

 *    software must display the following acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"

 *

 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

 *    endorse or promote products derived from this software without

 *    prior written permission. For written permission, please contact

 *    licensing@OpenSSL.org.

 *

 * 5. Products derived from this software may not be called "OpenSSL"

 *    nor may "OpenSSL" appear in their names without prior written

 *    permission of the OpenSSL Project.

 *

 * 6. Redistributions of any form whatsoever must retain the following

 *    acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"

 *

 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR

 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

 * OF THE POSSIBILITY OF SUCH DAMAGE.

 * ====================================================================

 *

 * This product includes cryptographic software written by Eric Young

 * (eay@cryptsoft.com).  This product includes software written by Tim

 * Hudson (tjh@cryptsoft.com).

 *

 */

/*

 © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

 */

#include <stdio.h>

#include "cryptlib.h"

#include <openssl/conf.h>

#include <openssl/asn1.h>

#include <openssl/asn1t.h>

#include <openssl/x509v3.h>

#if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))

#include "libcrypto_wsd_macros.h"

#include "libcrypto_wsd.h"

#endif

static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,

			AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist);

static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,

			X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values);

#ifndef EMULATOR

X509V3_EXT_METHOD v3_akey_id =

	{

	NID_authority_key_identifier,

	X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_KEYID),

	0,0,0,0,

	0,0,

	(X509V3_EXT_I2V)i2v_AUTHORITY_KEYID,

	(X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,

	0,0,

	NULL

	};

#else

const X509V3_EXT_METHOD v3_akey_id =

	{

	NID_authority_key_identifier,

	X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_KEYID),

	0,0,0,0,

	0,0,

	(X509V3_EXT_I2V)i2v_AUTHORITY_KEYID,

	(X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,

	0,0,

	NULL

	};

#endif

static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,

	     AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist)

{

	char *tmp;

	if(akeyid->keyid) {

		tmp = hex_to_string(akeyid->keyid->data, akeyid->keyid->length);

		X509V3_add_value("keyid", tmp, &extlist);

		OPENSSL_free(tmp);

	}

	if(akeyid->issuer) 

		extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist);

	if(akeyid->serial) {

		tmp = hex_to_string(akeyid->serial->data,

						 akeyid->serial->length);

		X509V3_add_value("serial", tmp, &extlist);

		OPENSSL_free(tmp);

	}

	return extlist;

}

/* Currently two options:

 * keyid: use the issuers subject keyid, the value 'always' means its is

 * an error if the issuer certificate doesn't have a key id.

 * issuer: use the issuers cert issuer and serial number. The default is

 * to only use this if keyid is not present. With the option 'always'

 * this is always included.

 */

static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,

	     X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values)

	{

	char keyid=0, issuer=0;

	int i;

	CONF_VALUE *cnf;

	ASN1_OCTET_STRING *ikeyid = NULL;

	X509_NAME *isname = NULL;

	GENERAL_NAMES * gens = NULL;

	GENERAL_NAME *gen = NULL;

	ASN1_INTEGER *serial = NULL;

	X509_EXTENSION *ext;

	X509 *cert;

	AUTHORITY_KEYID *akeyid;

	for(i = 0; i < sk_CONF_VALUE_num(values); i++)

		{

		cnf = sk_CONF_VALUE_value(values, i);

		if(!strcmp(cnf->name, "keyid"))

			{

			keyid = 1;

			if(cnf->value && !strcmp(cnf->value, "always"))

				keyid = 2;

			}

		else if(!strcmp(cnf->name, "issuer"))

			{

			issuer = 1;

			if(cnf->value && !strcmp(cnf->value, "always"))

				issuer = 2;

			}

		else

			{

			X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNKNOWN_OPTION);

			ERR_add_error_data(2, "name=", cnf->name);

			return NULL;

			}

		}

	if(!ctx || !ctx->issuer_cert)

		{

		if(ctx && (ctx->flags==CTX_TEST))

			return AUTHORITY_KEYID_new();

		X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_NO_ISSUER_CERTIFICATE);

		return NULL;

		}

	cert = ctx->issuer_cert;

	if(keyid)

		{

		i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1);

		if((i >= 0)  && (ext = X509_get_ext(cert, i)))

			ikeyid = X509V3_EXT_d2i(ext);

		if(keyid==2 && !ikeyid)

			{

			X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNABLE_TO_GET_ISSUER_KEYID);

			return NULL;

			}

		}

	if((issuer && !ikeyid) || (issuer == 2))

		{

		isname = X509_NAME_dup(X509_get_issuer_name(cert));

		serial = M_ASN1_INTEGER_dup(X509_get_serialNumber(cert));

		if(!isname || !serial)

			{

			X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS);

			goto err;

			}

		}

	if(!(akeyid = AUTHORITY_KEYID_new())) goto err;

	if(isname)

		{

		if(!(gens = sk_GENERAL_NAME_new_null())

			|| !(gen = GENERAL_NAME_new())

			|| !sk_GENERAL_NAME_push(gens, gen))

			{

			X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,ERR_R_MALLOC_FAILURE);

			goto err;

			}

		gen->type = GEN_DIRNAME;

		gen->d.dirn = isname;

		}

	akeyid->issuer = gens;

	akeyid->serial = serial;

	akeyid->keyid = ikeyid;

	return akeyid;

 err:

	X509_NAME_free(isname);

	M_ASN1_INTEGER_free(serial);

	M_ASN1_OCTET_STRING_free(ikeyid);

	return NULL;

	}