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114 lines
3 KiB
C
114 lines
3 KiB
C
/*
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* Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include "eng_local.h"
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#include <openssl/evp.h>
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static ENGINE_TABLE *pkey_meth_table = NULL;
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void ENGINE_unregister_pkey_meths(ENGINE *e)
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{
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engine_table_unregister(&pkey_meth_table, e);
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}
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static void engine_unregister_all_pkey_meths(void)
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{
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engine_table_cleanup(&pkey_meth_table);
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}
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int ENGINE_register_pkey_meths(ENGINE *e)
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{
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if (e->pkey_meths) {
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const int *nids;
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int num_nids = e->pkey_meths(e, NULL, &nids, 0);
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if (num_nids > 0)
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return engine_table_register(&pkey_meth_table,
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engine_unregister_all_pkey_meths, e,
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nids, num_nids, 0);
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}
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return 1;
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}
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void ENGINE_register_all_pkey_meths(void)
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{
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ENGINE *e;
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for (e = ENGINE_get_first(); e; e = ENGINE_get_next(e))
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ENGINE_register_pkey_meths(e);
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}
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int ENGINE_set_default_pkey_meths(ENGINE *e)
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{
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if (e->pkey_meths) {
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const int *nids;
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int num_nids = e->pkey_meths(e, NULL, &nids, 0);
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if (num_nids > 0)
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return engine_table_register(&pkey_meth_table,
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engine_unregister_all_pkey_meths, e,
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nids, num_nids, 1);
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}
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return 1;
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}
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/*
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* Exposed API function to get a functional reference from the implementation
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* table (ie. try to get a functional reference from the tabled structural
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* references) for a given pkey_meth 'nid'
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*/
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ENGINE *ENGINE_get_pkey_meth_engine(int nid)
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{
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return engine_table_select(&pkey_meth_table, nid);
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}
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/* Obtains a pkey_meth implementation from an ENGINE functional reference */
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const EVP_PKEY_METHOD *ENGINE_get_pkey_meth(ENGINE *e, int nid)
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{
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EVP_PKEY_METHOD *ret;
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ENGINE_PKEY_METHS_PTR fn = ENGINE_get_pkey_meths(e);
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if (!fn || !fn(e, &ret, NULL, nid)) {
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ENGINEerr(ENGINE_F_ENGINE_GET_PKEY_METH,
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ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD);
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return NULL;
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}
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return ret;
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}
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/* Gets the pkey_meth callback from an ENGINE structure */
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ENGINE_PKEY_METHS_PTR ENGINE_get_pkey_meths(const ENGINE *e)
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{
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return e->pkey_meths;
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}
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/* Sets the pkey_meth callback in an ENGINE structure */
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int ENGINE_set_pkey_meths(ENGINE *e, ENGINE_PKEY_METHS_PTR f)
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{
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e->pkey_meths = f;
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return 1;
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}
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/*
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* Internal function to free up EVP_PKEY_METHOD structures before an ENGINE
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* is destroyed
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*/
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void engine_pkey_meths_free(ENGINE *e)
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{
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int i;
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EVP_PKEY_METHOD *pkm;
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if (e->pkey_meths) {
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const int *pknids;
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int npknids;
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npknids = e->pkey_meths(e, NULL, &pknids, 0);
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for (i = 0; i < npknids; i++) {
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if (e->pkey_meths(e, &pkm, NULL, pknids[i])) {
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EVP_PKEY_meth_free(pkm);
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}
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}
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}
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}
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