[331] | 1 | /*
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| 2 | * Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include "eng_int.h"
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| 11 |
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| 12 | static ENGINE_TABLE *cipher_table = NULL;
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| 13 |
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| 14 | void ENGINE_unregister_ciphers(ENGINE *e)
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| 15 | {
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| 16 | engine_table_unregister(&cipher_table, e);
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| 17 | }
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| 18 |
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| 19 | static void engine_unregister_all_ciphers(void)
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| 20 | {
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| 21 | engine_table_cleanup(&cipher_table);
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| 22 | }
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| 23 |
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| 24 | int ENGINE_register_ciphers(ENGINE *e)
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| 25 | {
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| 26 | if (e->ciphers) {
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| 27 | const int *nids;
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| 28 | int num_nids = e->ciphers(e, NULL, &nids, 0);
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| 29 | if (num_nids > 0)
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| 30 | return engine_table_register(&cipher_table,
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| 31 | engine_unregister_all_ciphers, e,
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| 32 | nids, num_nids, 0);
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| 33 | }
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| 34 | return 1;
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| 35 | }
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| 36 |
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| 37 | void ENGINE_register_all_ciphers()
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| 38 | {
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| 39 | ENGINE *e;
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| 40 |
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| 41 | for (e = ENGINE_get_first(); e; e = ENGINE_get_next(e))
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| 42 | ENGINE_register_ciphers(e);
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| 43 | }
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| 44 |
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| 45 | int ENGINE_set_default_ciphers(ENGINE *e)
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| 46 | {
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| 47 | if (e->ciphers) {
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| 48 | const int *nids;
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| 49 | int num_nids = e->ciphers(e, NULL, &nids, 0);
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| 50 | if (num_nids > 0)
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| 51 | return engine_table_register(&cipher_table,
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| 52 | engine_unregister_all_ciphers, e,
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| 53 | nids, num_nids, 1);
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| 54 | }
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| 55 | return 1;
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| 56 | }
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| 57 |
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| 58 | /*
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| 59 | * Exposed API function to get a functional reference from the implementation
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| 60 | * table (ie. try to get a functional reference from the tabled structural
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| 61 | * references) for a given cipher 'nid'
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| 62 | */
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| 63 | ENGINE *ENGINE_get_cipher_engine(int nid)
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| 64 | {
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| 65 | return engine_table_select(&cipher_table, nid);
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| 66 | }
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| 67 |
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| 68 | /* Obtains a cipher implementation from an ENGINE functional reference */
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| 69 | const EVP_CIPHER *ENGINE_get_cipher(ENGINE *e, int nid)
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| 70 | {
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| 71 | const EVP_CIPHER *ret;
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| 72 | ENGINE_CIPHERS_PTR fn = ENGINE_get_ciphers(e);
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| 73 | if (!fn || !fn(e, &ret, NULL, nid)) {
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| 74 | ENGINEerr(ENGINE_F_ENGINE_GET_CIPHER, ENGINE_R_UNIMPLEMENTED_CIPHER);
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| 75 | return NULL;
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| 76 | }
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| 77 | return ret;
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| 78 | }
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| 79 |
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| 80 | /* Gets the cipher callback from an ENGINE structure */
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| 81 | ENGINE_CIPHERS_PTR ENGINE_get_ciphers(const ENGINE *e)
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| 82 | {
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| 83 | return e->ciphers;
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| 84 | }
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| 85 |
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| 86 | /* Sets the cipher callback in an ENGINE structure */
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| 87 | int ENGINE_set_ciphers(ENGINE *e, ENGINE_CIPHERS_PTR f)
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| 88 | {
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| 89 | e->ciphers = f;
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| 90 | return 1;
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| 91 | }
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