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92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
/*
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* Copyright 2001-2016 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_int.h"
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static ENGINE_TABLE *digest_table = NULL;
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void ENGINE_unregister_digests(ENGINE *e)
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{
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engine_table_unregister(&digest_table, e);
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}
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static void engine_unregister_all_digests(void)
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{
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engine_table_cleanup(&digest_table);
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}
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int ENGINE_register_digests(ENGINE *e)
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{
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if (e->digests) {
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const int *nids;
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int num_nids = e->digests(e, NULL, &nids, 0);
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if (num_nids > 0)
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return engine_table_register(&digest_table,
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engine_unregister_all_digests, 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_digests()
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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_digests(e);
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}
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int ENGINE_set_default_digests(ENGINE *e)
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{
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if (e->digests) {
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const int *nids;
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int num_nids = e->digests(e, NULL, &nids, 0);
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if (num_nids > 0)
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return engine_table_register(&digest_table,
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engine_unregister_all_digests, 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 digest 'nid'
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*/
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ENGINE *ENGINE_get_digest_engine(int nid)
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{
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return engine_table_select(&digest_table, nid);
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}
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/* Obtains a digest implementation from an ENGINE functional reference */
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const EVP_MD *ENGINE_get_digest(ENGINE *e, int nid)
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{
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const EVP_MD *ret;
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ENGINE_DIGESTS_PTR fn = ENGINE_get_digests(e);
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if (!fn || !fn(e, &ret, NULL, nid)) {
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ENGINEerr(ENGINE_F_ENGINE_GET_DIGEST, ENGINE_R_UNIMPLEMENTED_DIGEST);
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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 digest callback from an ENGINE structure */
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ENGINE_DIGESTS_PTR ENGINE_get_digests(const ENGINE *e)
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{
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return e->digests;
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}
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/* Sets the digest callback in an ENGINE structure */
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int ENGINE_set_digests(ENGINE *e, ENGINE_DIGESTS_PTR f)
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{
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e->digests = f;
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return 1;
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}
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