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- /* ====================================================================
- * Copyright (c) 2000 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).
- *
- */
- #include "eng_int.h"
- /* If this symbol is defined then ENGINE_get_cipher_engine(), the function that
- * is used by EVP to hook in cipher code and cache defaults (etc), will display
- * brief debugging summaries to stderr with the 'nid'. */
- /* #define ENGINE_CIPHER_DEBUG */
- static ENGINE_TABLE *cipher_table = NULL;
- void ENGINE_unregister_ciphers(ENGINE *e)
- {
- engine_table_unregister(&cipher_table, e);
- }
- static void engine_unregister_all_ciphers(void)
- {
- engine_table_cleanup(&cipher_table);
- }
- int ENGINE_register_ciphers(ENGINE *e)
- {
- if(e->ciphers)
- {
- const int *nids;
- int num_nids = e->ciphers(e, NULL, &nids, 0);
- if(num_nids > 0)
- return engine_table_register(&cipher_table,
- engine_unregister_all_ciphers, e, nids,
- num_nids, 0);
- }
- return 1;
- }
- void ENGINE_register_all_ciphers()
- {
- ENGINE *e;
- for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))
- ENGINE_register_ciphers(e);
- }
- int ENGINE_set_default_ciphers(ENGINE *e)
- {
- if(e->ciphers)
- {
- const int *nids;
- int num_nids = e->ciphers(e, NULL, &nids, 0);
- if(num_nids > 0)
- return engine_table_register(&cipher_table,
- engine_unregister_all_ciphers, e, nids,
- num_nids, 1);
- }
- return 1;
- }
- /* Exposed API function to get a functional reference from the implementation
- * table (ie. try to get a functional reference from the tabled structural
- * references) for a given cipher 'nid' */
- ENGINE *ENGINE_get_cipher_engine(int nid)
- {
- return engine_table_select(&cipher_table, nid);
- }
- /* Obtains a cipher implementation from an ENGINE functional reference */
- const EVP_CIPHER *ENGINE_get_cipher(ENGINE *e, int nid)
- {
- const EVP_CIPHER *ret;
- ENGINE_CIPHERS_PTR fn = ENGINE_get_ciphers(e);
- if(!fn || !fn(e, &ret, NULL, nid))
- {
- ENGINEerr(ENGINE_F_ENGINE_GET_CIPHER,
- ENGINE_R_UNIMPLEMENTED_CIPHER);
- return NULL;
- }
- return ret;
- }
- /* Gets the cipher callback from an ENGINE structure */
- ENGINE_CIPHERS_PTR ENGINE_get_ciphers(const ENGINE *e)
- {
- return e->ciphers;
- }
- /* Sets the cipher callback in an ENGINE structure */
- int ENGINE_set_ciphers(ENGINE *e, ENGINE_CIPHERS_PTR f)
- {
- e->ciphers = f;
- return 1;
- }
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