sl@0: /* v3_lib.c */
sl@0: /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
sl@0:  * project 1999.
sl@0:  */
sl@0: /* ====================================================================
sl@0:  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
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:  *
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer. 
sl@0:  *
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in
sl@0:  *    the documentation and/or other materials provided with the
sl@0:  *    distribution.
sl@0:  *
sl@0:  * 3. All advertising materials mentioning features or use of this
sl@0:  *    software must display the following acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
sl@0:  *    endorse or promote products derived from this software without
sl@0:  *    prior written permission. For written permission, please contact
sl@0:  *    licensing@OpenSSL.org.
sl@0:  *
sl@0:  * 5. Products derived from this software may not be called "OpenSSL"
sl@0:  *    nor may "OpenSSL" appear in their names without prior written
sl@0:  *    permission of the OpenSSL Project.
sl@0:  *
sl@0:  * 6. Redistributions of any form whatsoever must retain the following
sl@0:  *    acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
sl@0:  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
sl@0:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
sl@0:  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
sl@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sl@0:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
sl@0:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
sl@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
sl@0:  * OF THE POSSIBILITY OF SUCH DAMAGE.
sl@0:  * ====================================================================
sl@0:  *
sl@0:  * This product includes cryptographic software written by Eric Young
sl@0:  * (eay@cryptsoft.com).  This product includes software written by Tim
sl@0:  * Hudson (tjh@cryptsoft.com).
sl@0:  *
sl@0:  */
sl@0:  /*
sl@0:  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.
sl@0:  */
sl@0: 
sl@0: /* X509 v3 extension utilities */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include "cryptlib.h"
sl@0: #include <openssl/conf.h>
sl@0: #include <openssl/x509v3.h>
sl@0: #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
sl@0: #include "libcrypto_wsd_macros.h"
sl@0: #include "libcrypto_wsd.h"
sl@0: #endif
sl@0: 
sl@0: #include "ext_dat.h"
sl@0: 
sl@0: #ifndef EMULATOR
sl@0: static STACK_OF(X509V3_EXT_METHOD) *ext_list = NULL;
sl@0: #else
sl@0: GET_STATIC_VAR_FROM_TLS(ext_list,v3_lib,STACK_OF(X509V3_EXT_METHOD) *)
sl@0: #define ext_list (*GET_WSD_VAR_NAME(ext_list,v3_lib, s)())
sl@0: #endif
sl@0: 
sl@0: static int ext_cmp(const X509V3_EXT_METHOD * const *a,
sl@0: 		const X509V3_EXT_METHOD * const *b);
sl@0: static void ext_list_free(X509V3_EXT_METHOD *ext);
sl@0: 
sl@0: EXPORT_C int X509V3_EXT_add(X509V3_EXT_METHOD *ext)
sl@0: {
sl@0: 	if(!ext_list && !(ext_list = sk_X509V3_EXT_METHOD_new(ext_cmp))) {
sl@0: 		X509V3err(X509V3_F_X509V3_EXT_ADD,ERR_R_MALLOC_FAILURE);
sl@0: 		return 0;
sl@0: 	}
sl@0: 	if(!sk_X509V3_EXT_METHOD_push(ext_list, ext)) {
sl@0: 		X509V3err(X509V3_F_X509V3_EXT_ADD,ERR_R_MALLOC_FAILURE);
sl@0: 		return 0;
sl@0: 	}
sl@0: 	return 1;
sl@0: }
sl@0: 
sl@0: static int ext_cmp(const X509V3_EXT_METHOD * const *a,
sl@0: 		const X509V3_EXT_METHOD * const *b)
sl@0: {
sl@0: 	return ((*a)->ext_nid - (*b)->ext_nid);
sl@0: }
sl@0: 
sl@0: EXPORT_C X509V3_EXT_METHOD *X509V3_EXT_get_nid(int nid)
sl@0: {
sl@0: 	X509V3_EXT_METHOD tmp, *t = &tmp, **ret;
sl@0: 	int idx;
sl@0: 	if(nid < 0) return NULL;
sl@0: 	tmp.ext_nid = nid;
sl@0: 	ret = (X509V3_EXT_METHOD **) OBJ_bsearch((char *)&t,
sl@0: 			(char *)standard_exts, STANDARD_EXTENSION_COUNT,
sl@0: 			sizeof(X509V3_EXT_METHOD *), (int (*)(const void *, const void *))ext_cmp);
sl@0: 	if(ret) return *ret;
sl@0: 	if(!ext_list) return NULL;
sl@0: 	idx = sk_X509V3_EXT_METHOD_find(ext_list, &tmp);
sl@0: 	if(idx == -1) return NULL;
sl@0: 	return sk_X509V3_EXT_METHOD_value(ext_list, idx);
sl@0: }
sl@0: 
sl@0: EXPORT_C X509V3_EXT_METHOD *X509V3_EXT_get(X509_EXTENSION *ext)
sl@0: {
sl@0: 	int nid;
sl@0: 	if((nid = OBJ_obj2nid(ext->object)) == NID_undef) return NULL;
sl@0: 	return X509V3_EXT_get_nid(nid);
sl@0: }
sl@0: 
sl@0: 
sl@0: EXPORT_C int X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist)
sl@0: {
sl@0: 	for(;extlist->ext_nid!=-1;extlist++) 
sl@0: 			if(!X509V3_EXT_add(extlist)) return 0;
sl@0: 	return 1;
sl@0: }
sl@0: 
sl@0: EXPORT_C int X509V3_EXT_add_alias(int nid_to, int nid_from)
sl@0: {
sl@0: 	X509V3_EXT_METHOD *ext, *tmpext;
sl@0: 	if(!(ext = X509V3_EXT_get_nid(nid_from))) {
sl@0: 		X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS,X509V3_R_EXTENSION_NOT_FOUND);
sl@0: 		return 0;
sl@0: 	}
sl@0: 	if(!(tmpext = (X509V3_EXT_METHOD *)OPENSSL_malloc(sizeof(X509V3_EXT_METHOD)))) {
sl@0: 		X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS,ERR_R_MALLOC_FAILURE);
sl@0: 		return 0;
sl@0: 	}
sl@0: 	*tmpext = *ext;
sl@0: 	tmpext->ext_nid = nid_to;
sl@0: 	tmpext->ext_flags |= X509V3_EXT_DYNAMIC;
sl@0: 	return X509V3_EXT_add(tmpext);
sl@0: }
sl@0: 
sl@0: EXPORT_C void X509V3_EXT_cleanup(void)
sl@0: {
sl@0: 	sk_X509V3_EXT_METHOD_pop_free(ext_list, ext_list_free);
sl@0: 	ext_list = NULL;
sl@0: }
sl@0: 
sl@0: static void ext_list_free(X509V3_EXT_METHOD *ext)
sl@0: {
sl@0: 	if(ext->ext_flags & X509V3_EXT_DYNAMIC) OPENSSL_free(ext);
sl@0: }
sl@0: 
sl@0: /* Legacy function: we don't need to add standard extensions
sl@0:  * any more because they are now kept in ext_dat.h.
sl@0:  */
sl@0: 
sl@0: EXPORT_C int X509V3_add_standard_extensions(void)
sl@0: {
sl@0: 	return 1;
sl@0: }
sl@0: 
sl@0: /* Return an extension internal structure */
sl@0: 
sl@0: EXPORT_C void *X509V3_EXT_d2i(X509_EXTENSION *ext)
sl@0: {
sl@0: 	X509V3_EXT_METHOD *method;
sl@0: 	const unsigned char *p;
sl@0: 
sl@0: 	if(!(method = X509V3_EXT_get(ext))) return NULL;
sl@0: 	p = ext->value->data;
sl@0: 	if(method->it) return ASN1_item_d2i(NULL, &p, ext->value->length, ASN1_ITEM_ptr(method->it));
sl@0: 	return method->d2i(NULL, &p, ext->value->length);
sl@0: }
sl@0: 
sl@0: /* Get critical flag and decoded version of extension from a NID.
sl@0:  * The "idx" variable returns the last found extension and can
sl@0:  * be used to retrieve multiple extensions of the same NID.
sl@0:  * However multiple extensions with the same NID is usually
sl@0:  * due to a badly encoded certificate so if idx is NULL we
sl@0:  * choke if multiple extensions exist.
sl@0:  * The "crit" variable is set to the critical value.
sl@0:  * The return value is the decoded extension or NULL on
sl@0:  * error. The actual error can have several different causes,
sl@0:  * the value of *crit reflects the cause:
sl@0:  * >= 0, extension found but not decoded (reflects critical value).
sl@0:  * -1 extension not found.
sl@0:  * -2 extension occurs more than once.
sl@0:  */
sl@0: 
sl@0: EXPORT_C void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx)
sl@0: {
sl@0: 	int lastpos, i;
sl@0: 	X509_EXTENSION *ex, *found_ex = NULL;
sl@0: 	if(!x) {
sl@0: 		if(idx) *idx = -1;
sl@0: 		if(crit) *crit = -1;
sl@0: 		return NULL;
sl@0: 	}
sl@0: 	if(idx) lastpos = *idx + 1;
sl@0: 	else lastpos = 0;
sl@0: 	if(lastpos < 0) lastpos = 0;
sl@0: 	for(i = lastpos; i < sk_X509_EXTENSION_num(x); i++)
sl@0: 	{
sl@0: 		ex = sk_X509_EXTENSION_value(x, i);
sl@0: 		if(OBJ_obj2nid(ex->object) == nid) {
sl@0: 			if(idx) {
sl@0: 				*idx = i;
sl@0: 				found_ex = ex;
sl@0: 				break;
sl@0: 			} else if(found_ex) {
sl@0: 				/* Found more than one */
sl@0: 				if(crit) *crit = -2;
sl@0: 				return NULL;
sl@0: 			}
sl@0: 			found_ex = ex;
sl@0: 		}
sl@0: 	}
sl@0: 	if(found_ex) {
sl@0: 		/* Found it */
sl@0: 		if(crit) *crit = X509_EXTENSION_get_critical(found_ex);
sl@0: 		return X509V3_EXT_d2i(found_ex);
sl@0: 	}
sl@0: 
sl@0: 	/* Extension not found */
sl@0: 	if(idx) *idx = -1;
sl@0: 	if(crit) *crit = -1;
sl@0: 	return NULL;
sl@0: }
sl@0: 
sl@0: /* This function is a general extension append, replace and delete utility.
sl@0:  * The precise operation is governed by the 'flags' value. The 'crit' and
sl@0:  * 'value' arguments (if relevant) are the extensions internal structure.
sl@0:  */
sl@0: 
sl@0: EXPORT_C int X509V3_add1_i2d(STACK_OF(X509_EXTENSION) **x, int nid, void *value,
sl@0: 					int crit, unsigned long flags)
sl@0: {
sl@0: 	int extidx = -1;
sl@0: 	int errcode;
sl@0: 	X509_EXTENSION *ext, *extmp;
sl@0: 	unsigned long ext_op = flags & X509V3_ADD_OP_MASK;
sl@0: 
sl@0: 	/* If appending we don't care if it exists, otherwise
sl@0: 	 * look for existing extension.
sl@0: 	 */
sl@0: 	if(ext_op != X509V3_ADD_APPEND)
sl@0: 		extidx = X509v3_get_ext_by_NID(*x, nid, -1);
sl@0: 
sl@0: 	/* See if extension exists */
sl@0: 	if(extidx >= 0) {
sl@0: 		/* If keep existing, nothing to do */
sl@0: 		if(ext_op == X509V3_ADD_KEEP_EXISTING)
sl@0: 			return 1;
sl@0: 		/* If default then its an error */
sl@0: 		if(ext_op == X509V3_ADD_DEFAULT) {
sl@0: 			errcode = X509V3_R_EXTENSION_EXISTS;
sl@0: 			goto err;
sl@0: 		}
sl@0: 		/* If delete, just delete it */
sl@0: 		if(ext_op == X509V3_ADD_DELETE) {
sl@0: 			if(!sk_X509_EXTENSION_delete(*x, extidx)) return -1;
sl@0: 			return 1;
sl@0: 		}
sl@0: 	} else {
sl@0: 		/* If replace existing or delete, error since 
sl@0: 		 * extension must exist
sl@0: 		 */
sl@0: 		if((ext_op == X509V3_ADD_REPLACE_EXISTING) ||
sl@0: 		   (ext_op == X509V3_ADD_DELETE)) {
sl@0: 			errcode = X509V3_R_EXTENSION_NOT_FOUND;
sl@0: 			goto err;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 	/* If we get this far then we have to create an extension:
sl@0: 	 * could have some flags for alternative encoding schemes...
sl@0: 	 */
sl@0: 
sl@0: 	ext = X509V3_EXT_i2d(nid, crit, value);
sl@0: 
sl@0: 	if(!ext) {
sl@0: 		X509V3err(X509V3_F_X509V3_ADD1_I2D, X509V3_R_ERROR_CREATING_EXTENSION);
sl@0: 		return 0;
sl@0: 	}
sl@0: 
sl@0: 	/* If extension exists replace it.. */
sl@0: 	if(extidx >= 0) {
sl@0: 		extmp = sk_X509_EXTENSION_value(*x, extidx);
sl@0: 		X509_EXTENSION_free(extmp);
sl@0: 		if(!sk_X509_EXTENSION_set(*x, extidx, ext)) return -1;
sl@0: 		return 1;
sl@0: 	}
sl@0: 
sl@0: 	if(!*x && !(*x = sk_X509_EXTENSION_new_null())) return -1;
sl@0: 	if(!sk_X509_EXTENSION_push(*x, ext)) return -1;
sl@0: 
sl@0: 	return 1;
sl@0: 
sl@0: 	err:
sl@0: 	if(!(flags & X509V3_ADD_SILENT))
sl@0: 		X509V3err(X509V3_F_X509V3_ADD1_I2D, errcode);
sl@0: 	return 0;
sl@0: }
sl@0: 
sl@0: IMPLEMENT_STACK_OF(X509V3_EXT_METHOD)