Line data Source code
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
9 : * notice, this list of conditions and the following disclaimer.
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"
56 : #include <openssl/evp.h>
57 :
58 : /*
59 : * If this symbol is defined then ENGINE_get_pkey_meth_engine(), the function
60 : * that is used by EVP to hook in pkey_meth code and cache defaults (etc),
61 : * will display brief debugging summaries to stderr with the 'nid'.
62 : */
63 : /* #define ENGINE_PKEY_METH_DEBUG */
64 :
65 : static ENGINE_TABLE *pkey_meth_table = NULL;
66 :
67 0 : void ENGINE_unregister_pkey_meths(ENGINE *e)
68 : {
69 0 : engine_table_unregister(&pkey_meth_table, e);
70 0 : }
71 :
72 0 : static void engine_unregister_all_pkey_meths(void)
73 : {
74 0 : engine_table_cleanup(&pkey_meth_table);
75 0 : }
76 :
77 0 : int ENGINE_register_pkey_meths(ENGINE *e)
78 : {
79 0 : if (e->pkey_meths) {
80 : const int *nids;
81 0 : int num_nids = e->pkey_meths(e, NULL, &nids, 0);
82 0 : if (num_nids > 0)
83 0 : return engine_table_register(&pkey_meth_table,
84 : engine_unregister_all_pkey_meths, e,
85 : nids, num_nids, 0);
86 : }
87 : return 1;
88 : }
89 :
90 0 : void ENGINE_register_all_pkey_meths()
91 : {
92 : ENGINE *e;
93 :
94 0 : for (e = ENGINE_get_first(); e; e = ENGINE_get_next(e))
95 0 : ENGINE_register_pkey_meths(e);
96 0 : }
97 :
98 0 : int ENGINE_set_default_pkey_meths(ENGINE *e)
99 : {
100 0 : if (e->pkey_meths) {
101 : const int *nids;
102 0 : int num_nids = e->pkey_meths(e, NULL, &nids, 0);
103 0 : if (num_nids > 0)
104 0 : return engine_table_register(&pkey_meth_table,
105 : engine_unregister_all_pkey_meths, e,
106 : nids, num_nids, 1);
107 : }
108 : return 1;
109 : }
110 :
111 : /*
112 : * Exposed API function to get a functional reference from the implementation
113 : * table (ie. try to get a functional reference from the tabled structural
114 : * references) for a given pkey_meth 'nid'
115 : */
116 8477 : ENGINE *ENGINE_get_pkey_meth_engine(int nid)
117 : {
118 8477 : return engine_table_select(&pkey_meth_table, nid);
119 : }
120 :
121 : /* Obtains a pkey_meth implementation from an ENGINE functional reference */
122 0 : const EVP_PKEY_METHOD *ENGINE_get_pkey_meth(ENGINE *e, int nid)
123 : {
124 : EVP_PKEY_METHOD *ret;
125 : ENGINE_PKEY_METHS_PTR fn = ENGINE_get_pkey_meths(e);
126 0 : if (!fn || !fn(e, &ret, NULL, nid)) {
127 0 : ENGINEerr(ENGINE_F_ENGINE_GET_PKEY_METH,
128 : ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD);
129 0 : return NULL;
130 : }
131 0 : return ret;
132 : }
133 :
134 : /* Gets the pkey_meth callback from an ENGINE structure */
135 0 : ENGINE_PKEY_METHS_PTR ENGINE_get_pkey_meths(const ENGINE *e)
136 : {
137 0 : return e->pkey_meths;
138 : }
139 :
140 : /* Sets the pkey_meth callback in an ENGINE structure */
141 0 : int ENGINE_set_pkey_meths(ENGINE *e, ENGINE_PKEY_METHS_PTR f)
142 : {
143 0 : e->pkey_meths = f;
144 0 : return 1;
145 : }
146 :
147 : /*
148 : * Internal function to free up EVP_PKEY_METHOD structures before an ENGINE
149 : * is destroyed
150 : */
151 :
152 0 : void engine_pkey_meths_free(ENGINE *e)
153 : {
154 : int i;
155 : EVP_PKEY_METHOD *pkm;
156 0 : if (e->pkey_meths) {
157 : const int *pknids;
158 : int npknids;
159 0 : npknids = e->pkey_meths(e, NULL, &pknids, 0);
160 0 : for (i = 0; i < npknids; i++) {
161 0 : if (e->pkey_meths(e, &pkm, NULL, pknids[i])) {
162 0 : EVP_PKEY_meth_free(pkm);
163 : }
164 : }
165 : }
166 0 : }
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