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diff --git a/src/lib/libcrypto/engine/tb_pkmeth.c b/src/lib/libcrypto/engine/tb_pkmeth.c
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1/* $OpenBSD: tb_pkmeth.c,v 1.6 2017/01/29 17:49:23 beck Exp $ */
2/* ====================================================================
3 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * licensing@OpenSSL.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55
56#include <openssl/err.h>
57
58#include "eng_int.h"
59#include <openssl/evp.h>
60
61/* If this symbol is defined then ENGINE_get_pkey_meth_engine(), the function
62 * that is used by EVP to hook in pkey_meth code and cache defaults (etc), will
63 * display brief debugging summaries to stderr with the 'nid'. */
64/* #define ENGINE_PKEY_METH_DEBUG */
65
66static ENGINE_TABLE *pkey_meth_table = NULL;
67
68void
69ENGINE_unregister_pkey_meths(ENGINE *e)
70{
71 engine_table_unregister(&pkey_meth_table, e);
72}
73
74static void
75engine_unregister_all_pkey_meths(void)
76{
77 engine_table_cleanup(&pkey_meth_table);
78}
79
80int
81ENGINE_register_pkey_meths(ENGINE *e)
82{
83 if (e->pkey_meths) {
84 const int *nids;
85 int num_nids = e->pkey_meths(e, NULL, &nids, 0);
86 if (num_nids > 0)
87 return engine_table_register(&pkey_meth_table,
88 engine_unregister_all_pkey_meths, e, nids,
89 num_nids, 0);
90 }
91 return 1;
92}
93
94void
95ENGINE_register_all_pkey_meths(void)
96{
97 ENGINE *e;
98
99 for (e = ENGINE_get_first(); e; e = ENGINE_get_next(e))
100 ENGINE_register_pkey_meths(e);
101}
102
103int
104ENGINE_set_default_pkey_meths(ENGINE *e)
105{
106 if (e->pkey_meths) {
107 const int *nids;
108 int num_nids = e->pkey_meths(e, NULL, &nids, 0);
109 if (num_nids > 0)
110 return engine_table_register(&pkey_meth_table,
111 engine_unregister_all_pkey_meths, e, nids,
112 num_nids, 1);
113 }
114 return 1;
115}
116
117/* Exposed API function to get a functional reference from the implementation
118 * table (ie. try to get a functional reference from the tabled structural
119 * references) for a given pkey_meth 'nid' */
120ENGINE *
121ENGINE_get_pkey_meth_engine(int nid)
122{
123 return engine_table_select(&pkey_meth_table, nid);
124}
125
126/* Obtains a pkey_meth implementation from an ENGINE functional reference */
127const EVP_PKEY_METHOD *
128ENGINE_get_pkey_meth(ENGINE *e, int nid)
129{
130 EVP_PKEY_METHOD *ret;
131 ENGINE_PKEY_METHS_PTR fn = ENGINE_get_pkey_meths(e);
132
133 if (!fn || !fn(e, &ret, NULL, nid)) {
134 ENGINEerror(ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD);
135 return NULL;
136 }
137 return ret;
138}
139
140/* Gets the pkey_meth callback from an ENGINE structure */
141ENGINE_PKEY_METHS_PTR
142ENGINE_get_pkey_meths(const ENGINE *e)
143{
144 return e->pkey_meths;
145}
146
147/* Sets the pkey_meth callback in an ENGINE structure */
148int
149ENGINE_set_pkey_meths(ENGINE *e, ENGINE_PKEY_METHS_PTR f)
150{
151 e->pkey_meths = f;
152 return 1;
153}
154
155/* Internal function to free up EVP_PKEY_METHOD structures before an
156 * ENGINE is destroyed
157 */
158
159void
160engine_pkey_meths_free(ENGINE *e)
161{
162 int i;
163 EVP_PKEY_METHOD *pkm;
164
165 if (e->pkey_meths) {
166 const int *pknids;
167 int npknids;
168 npknids = e->pkey_meths(e, NULL, &pknids, 0);
169 for (i = 0; i < npknids; i++) {
170 if (e->pkey_meths(e, &pkm, NULL, pknids[i])) {
171 EVP_PKEY_meth_free(pkm);
172 }
173 }
174 }
175}
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