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- /* ====================================================================
- * Copyright (c) 2006 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"
- #include <openssl/evp.h>
- /*
- * If this symbol is defined then ENGINE_get_pkey_meth_engine(), the function
- * that is used by EVP to hook in pkey_meth code and cache defaults (etc),
- * will display brief debugging summaries to stderr with the 'nid'.
- */
- /* #define ENGINE_PKEY_METH_DEBUG */
- static ENGINE_TABLE *pkey_meth_table = NULL;
- void ENGINE_unregister_pkey_meths(ENGINE *e)
- {
- engine_table_unregister(&pkey_meth_table, e);
- }
- static void engine_unregister_all_pkey_meths(void)
- {
- engine_table_cleanup(&pkey_meth_table);
- }
- int ENGINE_register_pkey_meths(ENGINE *e)
- {
- if (e->pkey_meths) {
- const int *nids;
- int num_nids = e->pkey_meths(e, NULL, &nids, 0);
- if (num_nids > 0)
- return engine_table_register(&pkey_meth_table,
- engine_unregister_all_pkey_meths, e,
- nids, num_nids, 0);
- }
- return 1;
- }
- void ENGINE_register_all_pkey_meths()
- {
- ENGINE *e;
- for (e = ENGINE_get_first(); e; e = ENGINE_get_next(e))
- ENGINE_register_pkey_meths(e);
- }
- int ENGINE_set_default_pkey_meths(ENGINE *e)
- {
- if (e->pkey_meths) {
- const int *nids;
- int num_nids = e->pkey_meths(e, NULL, &nids, 0);
- if (num_nids > 0)
- return engine_table_register(&pkey_meth_table,
- engine_unregister_all_pkey_meths, 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 pkey_meth 'nid'
- */
- ENGINE *ENGINE_get_pkey_meth_engine(int nid)
- {
- return engine_table_select(&pkey_meth_table, nid);
- }
- /* Obtains a pkey_meth implementation from an ENGINE functional reference */
- const EVP_PKEY_METHOD *ENGINE_get_pkey_meth(ENGINE *e, int nid)
- {
- EVP_PKEY_METHOD *ret;
- ENGINE_PKEY_METHS_PTR fn = ENGINE_get_pkey_meths(e);
- if (!fn || !fn(e, &ret, NULL, nid)) {
- ENGINEerr(ENGINE_F_ENGINE_GET_PKEY_METH,
- ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD);
- return NULL;
- }
- return ret;
- }
- /* Gets the pkey_meth callback from an ENGINE structure */
- ENGINE_PKEY_METHS_PTR ENGINE_get_pkey_meths(const ENGINE *e)
- {
- return e->pkey_meths;
- }
- /* Sets the pkey_meth callback in an ENGINE structure */
- int ENGINE_set_pkey_meths(ENGINE *e, ENGINE_PKEY_METHS_PTR f)
- {
- e->pkey_meths = f;
- return 1;
- }
- /*
- * Internal function to free up EVP_PKEY_METHOD structures before an ENGINE
- * is destroyed
- */
- void engine_pkey_meths_free(ENGINE *e)
- {
- int i;
- EVP_PKEY_METHOD *pkm;
- if (e->pkey_meths) {
- const int *pknids;
- int npknids;
- npknids = e->pkey_meths(e, NULL, &pknids, 0);
- for (i = 0; i < npknids; i++) {
- if (e->pkey_meths(e, &pkm, NULL, pknids[i])) {
- EVP_PKEY_meth_free(pkm);
- }
- }
- }
- }
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