Branch data 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 : : /* If this symbol is defined then ENGINE_get_pkey_meth_engine(), the function
59 : : * that is used by EVP to hook in pkey_meth code and cache defaults (etc), will
60 : : * display brief debugging summaries to stderr with the 'nid'. */
61 : : /* #define ENGINE_PKEY_METH_DEBUG */
62 : :
63 : : static ENGINE_TABLE *pkey_meth_table = NULL;
64 : :
65 : 0 : void ENGINE_unregister_pkey_meths(ENGINE *e)
66 : : {
67 : 0 : engine_table_unregister(&pkey_meth_table, e);
68 : 0 : }
69 : :
70 : 727 : static void engine_unregister_all_pkey_meths(void)
71 : : {
72 : 727 : engine_table_cleanup(&pkey_meth_table);
73 : 727 : }
74 : :
75 : 8736 : int ENGINE_register_pkey_meths(ENGINE *e)
76 : : {
77 [ + + ]: 8736 : if(e->pkey_meths)
78 : : {
79 : : const int *nids;
80 : 1456 : int num_nids = e->pkey_meths(e, NULL, &nids, 0);
81 [ + - ]: 1456 : if(num_nids > 0)
82 : 1456 : return engine_table_register(&pkey_meth_table,
83 : : engine_unregister_all_pkey_meths, e, nids,
84 : : num_nids, 0);
85 : : }
86 : : return 1;
87 : : }
88 : :
89 : 0 : void ENGINE_register_all_pkey_meths()
90 : : {
91 : : ENGINE *e;
92 : :
93 [ # # ]: 0 : for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))
94 : 0 : ENGINE_register_pkey_meths(e);
95 : 0 : }
96 : :
97 : 1 : int ENGINE_set_default_pkey_meths(ENGINE *e)
98 : : {
99 [ + - ]: 1 : if(e->pkey_meths)
100 : : {
101 : : const int *nids;
102 : 1 : int num_nids = e->pkey_meths(e, NULL, &nids, 0);
103 [ + - ]: 1 : if(num_nids > 0)
104 : 1 : return engine_table_register(&pkey_meth_table,
105 : : engine_unregister_all_pkey_meths, e, nids,
106 : : num_nids, 1);
107 : : }
108 : : return 1;
109 : : }
110 : :
111 : : /* Exposed API function to get a functional reference from the implementation
112 : : * table (ie. try to get a functional reference from the tabled structural
113 : : * references) for a given pkey_meth 'nid' */
114 : 35506 : ENGINE *ENGINE_get_pkey_meth_engine(int nid)
115 : : {
116 : 35506 : return engine_table_select(&pkey_meth_table, nid);
117 : : }
118 : :
119 : : /* Obtains a pkey_meth implementation from an ENGINE functional reference */
120 : 14 : const EVP_PKEY_METHOD *ENGINE_get_pkey_meth(ENGINE *e, int nid)
121 : : {
122 : : EVP_PKEY_METHOD *ret;
123 : 14 : ENGINE_PKEY_METHS_PTR fn = ENGINE_get_pkey_meths(e);
124 [ + - ][ - + ]: 14 : if(!fn || !fn(e, &ret, NULL, nid))
125 : : {
126 : 0 : ENGINEerr(ENGINE_F_ENGINE_GET_PKEY_METH,
127 : : ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD);
128 : 0 : return NULL;
129 : : }
130 : 14 : return ret;
131 : : }
132 : :
133 : : /* Gets the pkey_meth callback from an ENGINE structure */
134 : 14 : ENGINE_PKEY_METHS_PTR ENGINE_get_pkey_meths(const ENGINE *e)
135 : : {
136 : 14 : return e->pkey_meths;
137 : : }
138 : :
139 : : /* Sets the pkey_meth callback in an ENGINE structure */
140 : 728 : int ENGINE_set_pkey_meths(ENGINE *e, ENGINE_PKEY_METHS_PTR f)
141 : : {
142 : 728 : e->pkey_meths = f;
143 : 728 : return 1;
144 : : }
145 : :
146 : : /* Internal function to free up EVP_PKEY_METHOD structures before an
147 : : * ENGINE is destroyed
148 : : */
149 : :
150 : 9240 : void engine_pkey_meths_free(ENGINE *e)
151 : : {
152 : : int i;
153 : : EVP_PKEY_METHOD *pkm;
154 [ + + ]: 9240 : if (e->pkey_meths)
155 : : {
156 : : const int *pknids;
157 : : int npknids;
158 : 727 : npknids = e->pkey_meths(e, NULL, &pknids, 0);
159 [ + + ]: 2908 : for (i = 0; i < npknids; i++)
160 : : {
161 [ + - ]: 2181 : if (e->pkey_meths(e, &pkm, NULL, pknids[i]))
162 : : {
163 : 2181 : EVP_PKEY_meth_free(pkm);
164 : : }
165 : : }
166 : : }
167 : 9240 : }
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