sl@0: /* ====================================================================
sl@0:  * Copyright (c) 2000 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: #include "eng_int.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: /* If this symbol is defined then ENGINE_get_digest_engine(), the function that
sl@0:  * is used by EVP to hook in digest code and cache defaults (etc), will display
sl@0:  * brief debugging summaries to stderr with the 'nid'. */
sl@0: /* #define ENGINE_DIGEST_DEBUG */
sl@0: #ifndef EMULATOR
sl@0: static ENGINE_TABLE *digest_table = NULL;
sl@0: #else
sl@0: GET_STATIC_VAR_FROM_TLS(digest_table,tb_digest,ENGINE_TABLE *)
sl@0: #define digest_table (*GET_WSD_VAR_NAME(digest_table,tb_digest,s)())
sl@0: #endif
sl@0: 
sl@0: EXPORT_C void ENGINE_unregister_digests(ENGINE *e)
sl@0: 	{
sl@0: 	engine_table_unregister(&digest_table, e);
sl@0: 	}
sl@0: 
sl@0: static void engine_unregister_all_digests(void)
sl@0: 	{
sl@0: 	engine_table_cleanup(&digest_table);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int ENGINE_register_digests(ENGINE *e)
sl@0: 	{
sl@0: 	if(e->digests)
sl@0: 		{
sl@0: 		const int *nids;
sl@0: 		int num_nids = e->digests(e, NULL, &nids, 0);
sl@0: 		if(num_nids > 0)
sl@0: 			return engine_table_register(&digest_table,
sl@0: 					engine_unregister_all_digests, e, nids,
sl@0: 					num_nids, 0);
sl@0: 		}
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void ENGINE_register_all_digests()
sl@0: 	{
sl@0: 	ENGINE *e;
sl@0: 
sl@0: 	for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))
sl@0: 		ENGINE_register_digests(e);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int ENGINE_set_default_digests(ENGINE *e)
sl@0: 	{
sl@0: 	if(e->digests)
sl@0: 		{
sl@0: 		const int *nids;
sl@0: 		int num_nids = e->digests(e, NULL, &nids, 0);
sl@0: 		if(num_nids > 0)
sl@0: 			return engine_table_register(&digest_table,
sl@0: 					engine_unregister_all_digests, e, nids,
sl@0: 					num_nids, 1);
sl@0: 		}
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0: /* Exposed API function to get a functional reference from the implementation
sl@0:  * table (ie. try to get a functional reference from the tabled structural
sl@0:  * references) for a given digest 'nid' */
sl@0: EXPORT_C ENGINE *ENGINE_get_digest_engine(int nid)
sl@0: 	{
sl@0: 	return engine_table_select(&digest_table, nid);
sl@0: 	}
sl@0: 
sl@0: /* Obtains a digest implementation from an ENGINE functional reference */
sl@0: EXPORT_C const EVP_MD *ENGINE_get_digest(ENGINE *e, int nid)
sl@0: 	{
sl@0: 	const EVP_MD *ret;
sl@0: 	ENGINE_DIGESTS_PTR fn = ENGINE_get_digests(e);
sl@0: 	if(!fn || !fn(e, &ret, NULL, nid))
sl@0: 		{
sl@0: 		ENGINEerr(ENGINE_F_ENGINE_GET_DIGEST,
sl@0: 				ENGINE_R_UNIMPLEMENTED_DIGEST);
sl@0: 		return NULL;
sl@0: 		}
sl@0: 	return ret;
sl@0: 	}
sl@0: 
sl@0: /* Gets the digest callback from an ENGINE structure */
sl@0: EXPORT_C ENGINE_DIGESTS_PTR ENGINE_get_digests(const ENGINE *e)
sl@0: 	{
sl@0: 	return e->digests;
sl@0: 	}
sl@0: 
sl@0: /* Sets the digest callback in an ENGINE structure */
sl@0: EXPORT_C int ENGINE_set_digests(ENGINE *e, ENGINE_DIGESTS_PTR f)
sl@0: 	{
sl@0: 	e->digests = f;
sl@0: 	return 1;
sl@0: 	}