sl@0: /* crypto/x509/x509_v3.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include <openssl/stack.h>
sl@0: #include "cryptlib.h"
sl@0: #include <openssl/asn1.h>
sl@0: #include <openssl/objects.h>
sl@0: #include <openssl/evp.h>
sl@0: #include <openssl/x509.h>
sl@0: #include <openssl/x509v3.h>
sl@0: 
sl@0: EXPORT_C int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x)
sl@0: 	{
sl@0: 	if (x == NULL) return(0);
sl@0: 	return(sk_X509_EXTENSION_num(x));
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, int nid,
sl@0: 			  int lastpos)
sl@0: 	{
sl@0: 	ASN1_OBJECT *obj;
sl@0: 
sl@0: 	obj=OBJ_nid2obj(nid);
sl@0: 	if (obj == NULL) return(-2);
sl@0: 	return(X509v3_get_ext_by_OBJ(x,obj,lastpos));
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk, ASN1_OBJECT *obj,
sl@0: 			  int lastpos)
sl@0: 	{
sl@0: 	int n;
sl@0: 	X509_EXTENSION *ex;
sl@0: 
sl@0: 	if (sk == NULL) return(-1);
sl@0: 	lastpos++;
sl@0: 	if (lastpos < 0)
sl@0: 		lastpos=0;
sl@0: 	n=sk_X509_EXTENSION_num(sk);
sl@0: 	for ( ; lastpos < n; lastpos++)
sl@0: 		{
sl@0: 		ex=sk_X509_EXTENSION_value(sk,lastpos);
sl@0: 		if (OBJ_cmp(ex->object,obj) == 0)
sl@0: 			return(lastpos);
sl@0: 		}
sl@0: 	return(-1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit,
sl@0: 			       int lastpos)
sl@0: 	{
sl@0: 	int n;
sl@0: 	X509_EXTENSION *ex;
sl@0: 
sl@0: 	if (sk == NULL) return(-1);
sl@0: 	lastpos++;
sl@0: 	if (lastpos < 0)
sl@0: 		lastpos=0;
sl@0: 	n=sk_X509_EXTENSION_num(sk);
sl@0: 	for ( ; lastpos < n; lastpos++)
sl@0: 		{
sl@0: 		ex=sk_X509_EXTENSION_value(sk,lastpos);
sl@0: 		if (	((ex->critical > 0) && crit) ||
sl@0: 			((ex->critical <= 0) && !crit))
sl@0: 			return(lastpos);
sl@0: 		}
sl@0: 	return(-1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc)
sl@0: 	{
sl@0: 	if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0)
sl@0: 		return NULL;
sl@0: 	else
sl@0: 		return sk_X509_EXTENSION_value(x,loc);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc)
sl@0: 	{
sl@0: 	X509_EXTENSION *ret;
sl@0: 
sl@0: 	if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0)
sl@0: 		return(NULL);
sl@0: 	ret=sk_X509_EXTENSION_delete(x,loc);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x,
sl@0: 					 X509_EXTENSION *ex, int loc)
sl@0: 	{
sl@0: 	X509_EXTENSION *new_ex=NULL;
sl@0: 	int n;
sl@0: 	STACK_OF(X509_EXTENSION) *sk=NULL;
sl@0: 
sl@0: 	if (x == NULL)
sl@0: 		{
sl@0: 		X509err(X509_F_X509V3_ADD_EXT,ERR_R_PASSED_NULL_PARAMETER);
sl@0: 		goto err2;
sl@0: 		}
sl@0: 
sl@0: 	if (*x == NULL)
sl@0: 		{
sl@0: 		if ((sk=sk_X509_EXTENSION_new_null()) == NULL)
sl@0: 			goto err;
sl@0: 		}
sl@0: 	else
sl@0: 		sk= *x;
sl@0: 
sl@0: 	n=sk_X509_EXTENSION_num(sk);
sl@0: 	if (loc > n) loc=n;
sl@0: 	else if (loc < 0) loc=n;
sl@0: 
sl@0: 	if ((new_ex=X509_EXTENSION_dup(ex)) == NULL)
sl@0: 		goto err2;
sl@0: 	if (!sk_X509_EXTENSION_insert(sk,new_ex,loc))
sl@0: 		goto err;
sl@0: 	if (*x == NULL)
sl@0: 		*x=sk;
sl@0: 	return(sk);
sl@0: err:
sl@0: 	X509err(X509_F_X509V3_ADD_EXT,ERR_R_MALLOC_FAILURE);
sl@0: err2:
sl@0: 	if (new_ex != NULL) X509_EXTENSION_free(new_ex);
sl@0: 	if (sk != NULL) sk_X509_EXTENSION_free(sk);
sl@0: 	return(NULL);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid,
sl@0: 	     int crit, ASN1_OCTET_STRING *data)
sl@0: 	{
sl@0: 	ASN1_OBJECT *obj;
sl@0: 	X509_EXTENSION *ret;
sl@0: 
sl@0: 	obj=OBJ_nid2obj(nid);
sl@0: 	if (obj == NULL)
sl@0: 		{
sl@0: 		X509err(X509_F_X509_EXTENSION_CREATE_BY_NID,X509_R_UNKNOWN_NID);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	ret=X509_EXTENSION_create_by_OBJ(ex,obj,crit,data);
sl@0: 	if (ret == NULL) ASN1_OBJECT_free(obj);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex,
sl@0: 	     ASN1_OBJECT *obj, int crit, ASN1_OCTET_STRING *data)
sl@0: 	{
sl@0: 	X509_EXTENSION *ret;
sl@0: 
sl@0: 	if ((ex == NULL) || (*ex == NULL))
sl@0: 		{
sl@0: 		if ((ret=X509_EXTENSION_new()) == NULL)
sl@0: 			{
sl@0: 			X509err(X509_F_X509_EXTENSION_CREATE_BY_OBJ,ERR_R_MALLOC_FAILURE);
sl@0: 			return(NULL);
sl@0: 			}
sl@0: 		}
sl@0: 	else
sl@0: 		ret= *ex;
sl@0: 
sl@0: 	if (!X509_EXTENSION_set_object(ret,obj))
sl@0: 		goto err;
sl@0: 	if (!X509_EXTENSION_set_critical(ret,crit))
sl@0: 		goto err;
sl@0: 	if (!X509_EXTENSION_set_data(ret,data))
sl@0: 		goto err;
sl@0: 	
sl@0: 	if ((ex != NULL) && (*ex == NULL)) *ex=ret;
sl@0: 	return(ret);
sl@0: err:
sl@0: 	if ((ex == NULL) || (ret != *ex))
sl@0: 		X509_EXTENSION_free(ret);
sl@0: 	return(NULL);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int X509_EXTENSION_set_object(X509_EXTENSION *ex, ASN1_OBJECT *obj)
sl@0: 	{
sl@0: 	if ((ex == NULL) || (obj == NULL))
sl@0: 		return(0);
sl@0: 	ASN1_OBJECT_free(ex->object);
sl@0: 	ex->object=OBJ_dup(obj);
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit)
sl@0: 	{
sl@0: 	if (ex == NULL) return(0);
sl@0: 	ex->critical=(crit)?0xFF:-1;
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data)
sl@0: 	{
sl@0: 	int i;
sl@0: 
sl@0: 	if (ex == NULL) return(0);
sl@0: 	i=M_ASN1_OCTET_STRING_set(ex->value,data->data,data->length);
sl@0: 	if (!i) return(0);
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex)
sl@0: 	{
sl@0: 	if (ex == NULL) return(NULL);
sl@0: 	return(ex->object);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ex)
sl@0: 	{
sl@0: 	if (ex == NULL) return(NULL);
sl@0: 	return(ex->value);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int X509_EXTENSION_get_critical(X509_EXTENSION *ex)
sl@0: 	{
sl@0: 	if (ex == NULL) return(0);
sl@0: 	if(ex->critical > 0) return 1;
sl@0: 	return 0;
sl@0: 	}