[331] | 1 | /*
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| 2 | * Copyright 2006-2016 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 | #include <openssl/evp.h>
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| 12 |
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| 13 | static ENGINE_TABLE *pkey_meth_table = NULL;
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| 14 |
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| 15 | void ENGINE_unregister_pkey_meths(ENGINE *e)
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| 16 | {
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| 17 | engine_table_unregister(&pkey_meth_table, e);
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| 18 | }
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| 19 |
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| 20 | static void engine_unregister_all_pkey_meths(void)
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| 21 | {
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| 22 | engine_table_cleanup(&pkey_meth_table);
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| 23 | }
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| 24 |
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| 25 | int ENGINE_register_pkey_meths(ENGINE *e)
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| 26 | {
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| 27 | if (e->pkey_meths) {
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| 28 | const int *nids;
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| 29 | int num_nids = e->pkey_meths(e, NULL, &nids, 0);
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| 30 | if (num_nids > 0)
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| 31 | return engine_table_register(&pkey_meth_table,
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| 32 | engine_unregister_all_pkey_meths, e,
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| 33 | nids, num_nids, 0);
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| 34 | }
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| 35 | return 1;
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| 36 | }
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| 37 |
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| 38 | void ENGINE_register_all_pkey_meths()
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| 39 | {
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| 40 | ENGINE *e;
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| 41 |
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| 42 | for (e = ENGINE_get_first(); e; e = ENGINE_get_next(e))
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| 43 | ENGINE_register_pkey_meths(e);
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| 44 | }
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| 45 |
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| 46 | int ENGINE_set_default_pkey_meths(ENGINE *e)
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| 47 | {
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| 48 | if (e->pkey_meths) {
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| 49 | const int *nids;
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| 50 | int num_nids = e->pkey_meths(e, NULL, &nids, 0);
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| 51 | if (num_nids > 0)
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| 52 | return engine_table_register(&pkey_meth_table,
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| 53 | engine_unregister_all_pkey_meths, e,
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| 54 | nids, num_nids, 1);
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| 55 | }
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| 56 | return 1;
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| 57 | }
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| 58 |
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| 59 | /*
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| 60 | * Exposed API function to get a functional reference from the implementation
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| 61 | * table (ie. try to get a functional reference from the tabled structural
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| 62 | * references) for a given pkey_meth 'nid'
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| 63 | */
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| 64 | ENGINE *ENGINE_get_pkey_meth_engine(int nid)
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| 65 | {
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| 66 | return engine_table_select(&pkey_meth_table, nid);
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| 67 | }
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| 68 |
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| 69 | /* Obtains a pkey_meth implementation from an ENGINE functional reference */
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| 70 | const EVP_PKEY_METHOD *ENGINE_get_pkey_meth(ENGINE *e, int nid)
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| 71 | {
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| 72 | EVP_PKEY_METHOD *ret;
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| 73 | ENGINE_PKEY_METHS_PTR fn = ENGINE_get_pkey_meths(e);
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| 74 | if (!fn || !fn(e, &ret, NULL, nid)) {
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| 75 | ENGINEerr(ENGINE_F_ENGINE_GET_PKEY_METH,
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| 76 | ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD);
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| 77 | return NULL;
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| 78 | }
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| 79 | return ret;
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| 80 | }
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| 81 |
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| 82 | /* Gets the pkey_meth callback from an ENGINE structure */
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| 83 | ENGINE_PKEY_METHS_PTR ENGINE_get_pkey_meths(const ENGINE *e)
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| 84 | {
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| 85 | return e->pkey_meths;
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| 86 | }
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| 87 |
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| 88 | /* Sets the pkey_meth callback in an ENGINE structure */
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| 89 | int ENGINE_set_pkey_meths(ENGINE *e, ENGINE_PKEY_METHS_PTR f)
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| 90 | {
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| 91 | e->pkey_meths = f;
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| 92 | return 1;
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| 93 | }
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| 94 |
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| 95 | /*
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| 96 | * Internal function to free up EVP_PKEY_METHOD structures before an ENGINE
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| 97 | * is destroyed
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| 98 | */
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| 99 |
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| 100 | void engine_pkey_meths_free(ENGINE *e)
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| 101 | {
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| 102 | int i;
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| 103 | EVP_PKEY_METHOD *pkm;
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| 104 | if (e->pkey_meths) {
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| 105 | const int *pknids;
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| 106 | int npknids;
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| 107 | npknids = e->pkey_meths(e, NULL, &pknids, 0);
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| 108 | for (i = 0; i < npknids; i++) {
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| 109 | if (e->pkey_meths(e, &pkm, NULL, pknids[i])) {
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| 110 | EVP_PKEY_meth_free(pkm);
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| 111 | }
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| 112 | }
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| 113 | }
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| 114 | }
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