/* 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;

 	}