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72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
/*
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* Copyright 2001-2018 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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static ENGINE_TABLE *dh_table = NULL;
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static const int dummy_nid = 1;
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void ENGINE_unregister_DH(ENGINE *e)
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{
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engine_table_unregister(&dh_table, e);
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}
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static void engine_unregister_all_DH(void)
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{
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engine_table_cleanup(&dh_table);
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}
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int ENGINE_register_DH(ENGINE *e)
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{
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if (e->dh_meth)
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return engine_table_register(&dh_table,
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engine_unregister_all_DH, e, &dummy_nid,
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1, 0);
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return 1;
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}
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void ENGINE_register_all_DH(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_DH(e);
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}
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int ENGINE_set_default_DH(ENGINE *e)
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{
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if (e->dh_meth)
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return engine_table_register(&dh_table,
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engine_unregister_all_DH, e, &dummy_nid,
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1, 1);
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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).
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*/
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ENGINE *ENGINE_get_default_DH(void)
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{
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return engine_table_select(&dh_table, dummy_nid);
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}
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/* Obtains an DH implementation from an ENGINE functional reference */
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const DH_METHOD *ENGINE_get_DH(const ENGINE *e)
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{
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return e->dh_meth;
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}
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/* Sets an DH implementation in an ENGINE structure */
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int ENGINE_set_DH(ENGINE *e, const DH_METHOD *dh_meth)
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{
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e->dh_meth = dh_meth;
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return 1;
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}
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