Branch data Line data Source code
1 : : /* ====================================================================
2 : : * Copyright (c) 2000 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 : :
57 : : /* If this symbol is defined then ENGINE_get_cipher_engine(), the function that
58 : : * is used by EVP to hook in cipher code and cache defaults (etc), will display
59 : : * brief debugging summaries to stderr with the 'nid'. */
60 : : /* #define ENGINE_CIPHER_DEBUG */
61 : :
62 : : static ENGINE_TABLE *cipher_table = NULL;
63 : :
64 : 0 : void ENGINE_unregister_ciphers(ENGINE *e)
65 : : {
66 : 0 : engine_table_unregister(&cipher_table, e);
67 : 0 : }
68 : :
69 : 727 : static void engine_unregister_all_ciphers(void)
70 : : {
71 : 727 : engine_table_cleanup(&cipher_table);
72 : 727 : }
73 : :
74 : 8748 : int ENGINE_register_ciphers(ENGINE *e)
75 : : {
76 [ + + ]: 8748 : if(e->ciphers)
77 : : {
78 : : const int *nids;
79 : 1457 : int num_nids = e->ciphers(e, NULL, &nids, 0);
80 [ + - ]: 1457 : if(num_nids > 0)
81 : 1457 : return engine_table_register(&cipher_table,
82 : : engine_unregister_all_ciphers, e, nids,
83 : : num_nids, 0);
84 : : }
85 : : return 1;
86 : : }
87 : :
88 : 1 : void ENGINE_register_all_ciphers()
89 : : {
90 : : ENGINE *e;
91 : :
92 [ + + ]: 13 : for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))
93 : 12 : ENGINE_register_ciphers(e);
94 : 1 : }
95 : :
96 : 1 : int ENGINE_set_default_ciphers(ENGINE *e)
97 : : {
98 [ + - ]: 1 : if(e->ciphers)
99 : : {
100 : : const int *nids;
101 : 1 : int num_nids = e->ciphers(e, NULL, &nids, 0);
102 [ + - ]: 1 : if(num_nids > 0)
103 : 1 : return engine_table_register(&cipher_table,
104 : : engine_unregister_all_ciphers, e, nids,
105 : : num_nids, 1);
106 : : }
107 : : return 1;
108 : : }
109 : :
110 : : /* Exposed API function to get a functional reference from the implementation
111 : : * table (ie. try to get a functional reference from the tabled structural
112 : : * references) for a given cipher 'nid' */
113 : 6230 : ENGINE *ENGINE_get_cipher_engine(int nid)
114 : : {
115 : 6230 : return engine_table_select(&cipher_table, nid);
116 : : }
117 : :
118 : : /* Obtains a cipher implementation from an ENGINE functional reference */
119 : 8 : const EVP_CIPHER *ENGINE_get_cipher(ENGINE *e, int nid)
120 : : {
121 : : const EVP_CIPHER *ret;
122 : 8 : ENGINE_CIPHERS_PTR fn = ENGINE_get_ciphers(e);
123 [ + - ][ - + ]: 8 : if(!fn || !fn(e, &ret, NULL, nid))
124 : : {
125 : 0 : ENGINEerr(ENGINE_F_ENGINE_GET_CIPHER,
126 : : ENGINE_R_UNIMPLEMENTED_CIPHER);
127 : 0 : return NULL;
128 : : }
129 : 8 : return ret;
130 : : }
131 : :
132 : : /* Gets the cipher callback from an ENGINE structure */
133 : 8 : ENGINE_CIPHERS_PTR ENGINE_get_ciphers(const ENGINE *e)
134 : : {
135 : 8 : return e->ciphers;
136 : : }
137 : :
138 : : /* Sets the cipher callback in an ENGINE structure */
139 : 728 : int ENGINE_set_ciphers(ENGINE *e, ENGINE_CIPHERS_PTR f)
140 : : {
141 : 728 : e->ciphers = f;
142 : 728 : return 1;
143 : : }
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