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- /*
- * Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the Apache License 2.0 (the "License"). You may not use
- * this file except in compliance with the License. You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
- /* We need to use some deprecated APIs */
- #include "internal/deprecated.h"
- #include "eng_local.h"
- #include <openssl/evp.h>
- 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(void)
- {
- 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 ossl_engine_table_select(&pkey_meth_table, nid,
- OPENSSL_FILE, OPENSSL_LINE);
- }
- /* 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)) {
- ERR_raise(ERR_LIB_ENGINE, 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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