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58aa573a DSH |
1 | /* ==================================================================== |
2 | * Copyright (c) 2006 The OpenSSL Project. All rights reserved. | |
3 | * | |
4 | * Redistribution and use in source and binary forms, with or without | |
5 | * modification, are permitted provided that the following conditions | |
6 | * are met: | |
7 | * | |
8 | * 1. Redistributions of source code must retain the above copyright | |
0f113f3e | 9 | * notice, this list of conditions and the following disclaimer. |
58aa573a DSH |
10 | * |
11 | * 2. Redistributions in binary form must reproduce the above copyright | |
12 | * notice, this list of conditions and the following disclaimer in | |
13 | * the documentation and/or other materials provided with the | |
14 | * distribution. | |
15 | * | |
16 | * 3. All advertising materials mentioning features or use of this | |
17 | * software must display the following acknowledgment: | |
18 | * "This product includes software developed by the OpenSSL Project | |
19 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
20 | * | |
21 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
22 | * endorse or promote products derived from this software without | |
23 | * prior written permission. For written permission, please contact | |
24 | * licensing@OpenSSL.org. | |
25 | * | |
26 | * 5. Products derived from this software may not be called "OpenSSL" | |
27 | * nor may "OpenSSL" appear in their names without prior written | |
28 | * permission of the OpenSSL Project. | |
29 | * | |
30 | * 6. Redistributions of any form whatsoever must retain the following | |
31 | * acknowledgment: | |
32 | * "This product includes software developed by the OpenSSL Project | |
33 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
34 | * | |
35 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
36 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
37 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
38 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
39 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
40 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
41 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
42 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
43 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
44 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
45 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
46 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
47 | * ==================================================================== | |
48 | * | |
49 | * This product includes cryptographic software written by Eric Young | |
50 | * (eay@cryptsoft.com). This product includes software written by Tim | |
51 | * Hudson (tjh@cryptsoft.com). | |
52 | * | |
53 | */ | |
54 | ||
55 | #include "eng_int.h" | |
1e26a8ba | 56 | #include <openssl/evp.h> |
58aa573a | 57 | |
58aa573a DSH |
58 | static ENGINE_TABLE *pkey_meth_table = NULL; |
59 | ||
60 | void ENGINE_unregister_pkey_meths(ENGINE *e) | |
0f113f3e MC |
61 | { |
62 | engine_table_unregister(&pkey_meth_table, e); | |
63 | } | |
58aa573a DSH |
64 | |
65 | static void engine_unregister_all_pkey_meths(void) | |
0f113f3e MC |
66 | { |
67 | engine_table_cleanup(&pkey_meth_table); | |
68 | } | |
58aa573a DSH |
69 | |
70 | int ENGINE_register_pkey_meths(ENGINE *e) | |
0f113f3e MC |
71 | { |
72 | if (e->pkey_meths) { | |
73 | const int *nids; | |
74 | int num_nids = e->pkey_meths(e, NULL, &nids, 0); | |
75 | if (num_nids > 0) | |
76 | return engine_table_register(&pkey_meth_table, | |
77 | engine_unregister_all_pkey_meths, e, | |
78 | nids, num_nids, 0); | |
79 | } | |
80 | return 1; | |
81 | } | |
58aa573a DSH |
82 | |
83 | void ENGINE_register_all_pkey_meths() | |
0f113f3e MC |
84 | { |
85 | ENGINE *e; | |
58aa573a | 86 | |
0f113f3e MC |
87 | for (e = ENGINE_get_first(); e; e = ENGINE_get_next(e)) |
88 | ENGINE_register_pkey_meths(e); | |
89 | } | |
58aa573a DSH |
90 | |
91 | int ENGINE_set_default_pkey_meths(ENGINE *e) | |
0f113f3e MC |
92 | { |
93 | if (e->pkey_meths) { | |
94 | const int *nids; | |
95 | int num_nids = e->pkey_meths(e, NULL, &nids, 0); | |
96 | if (num_nids > 0) | |
97 | return engine_table_register(&pkey_meth_table, | |
98 | engine_unregister_all_pkey_meths, e, | |
99 | nids, num_nids, 1); | |
100 | } | |
101 | return 1; | |
102 | } | |
58aa573a | 103 | |
0f113f3e MC |
104 | /* |
105 | * Exposed API function to get a functional reference from the implementation | |
58aa573a | 106 | * table (ie. try to get a functional reference from the tabled structural |
0f113f3e MC |
107 | * references) for a given pkey_meth 'nid' |
108 | */ | |
58aa573a | 109 | ENGINE *ENGINE_get_pkey_meth_engine(int nid) |
0f113f3e MC |
110 | { |
111 | return engine_table_select(&pkey_meth_table, nid); | |
112 | } | |
58aa573a DSH |
113 | |
114 | /* Obtains a pkey_meth implementation from an ENGINE functional reference */ | |
115 | const EVP_PKEY_METHOD *ENGINE_get_pkey_meth(ENGINE *e, int nid) | |
0f113f3e MC |
116 | { |
117 | EVP_PKEY_METHOD *ret; | |
118 | ENGINE_PKEY_METHS_PTR fn = ENGINE_get_pkey_meths(e); | |
119 | if (!fn || !fn(e, &ret, NULL, nid)) { | |
120 | ENGINEerr(ENGINE_F_ENGINE_GET_PKEY_METH, | |
121 | ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD); | |
122 | return NULL; | |
123 | } | |
124 | return ret; | |
125 | } | |
58aa573a DSH |
126 | |
127 | /* Gets the pkey_meth callback from an ENGINE structure */ | |
128 | ENGINE_PKEY_METHS_PTR ENGINE_get_pkey_meths(const ENGINE *e) | |
0f113f3e MC |
129 | { |
130 | return e->pkey_meths; | |
131 | } | |
58aa573a DSH |
132 | |
133 | /* Sets the pkey_meth callback in an ENGINE structure */ | |
134 | int ENGINE_set_pkey_meths(ENGINE *e, ENGINE_PKEY_METHS_PTR f) | |
0f113f3e MC |
135 | { |
136 | e->pkey_meths = f; | |
137 | return 1; | |
138 | } | |
7e5b0681 | 139 | |
0f113f3e MC |
140 | /* |
141 | * Internal function to free up EVP_PKEY_METHOD structures before an ENGINE | |
142 | * is destroyed | |
7e5b0681 DSH |
143 | */ |
144 | ||
145 | void engine_pkey_meths_free(ENGINE *e) | |
0f113f3e MC |
146 | { |
147 | int i; | |
148 | EVP_PKEY_METHOD *pkm; | |
149 | if (e->pkey_meths) { | |
150 | const int *pknids; | |
151 | int npknids; | |
152 | npknids = e->pkey_meths(e, NULL, &pknids, 0); | |
153 | for (i = 0; i < npknids; i++) { | |
154 | if (e->pkey_meths(e, &pkm, NULL, pknids[i])) { | |
155 | EVP_PKEY_meth_free(pkm); | |
156 | } | |
157 | } | |
158 | } | |
159 | } |