OLD | NEW |
| (Empty) |
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_digest_engine(), the function that | |
58 * is used by EVP to hook in digest code and cache defaults (etc), will display | |
59 * brief debugging summaries to stderr with the 'nid'. */ | |
60 /* #define ENGINE_DIGEST_DEBUG */ | |
61 | |
62 static ENGINE_TABLE *digest_table = NULL; | |
63 | |
64 void ENGINE_unregister_digests(ENGINE *e) | |
65 { | |
66 engine_table_unregister(&digest_table, e); | |
67 } | |
68 | |
69 static void engine_unregister_all_digests(void) | |
70 { | |
71 engine_table_cleanup(&digest_table); | |
72 } | |
73 | |
74 int ENGINE_register_digests(ENGINE *e) | |
75 { | |
76 if(e->digests) | |
77 { | |
78 const int *nids; | |
79 int num_nids = e->digests(e, NULL, &nids, 0); | |
80 if(num_nids > 0) | |
81 return engine_table_register(&digest_table, | |
82 engine_unregister_all_digests, e, nids, | |
83 num_nids, 0); | |
84 } | |
85 return 1; | |
86 } | |
87 | |
88 void ENGINE_register_all_digests() | |
89 { | |
90 ENGINE *e; | |
91 | |
92 for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e)) | |
93 ENGINE_register_digests(e); | |
94 } | |
95 | |
96 int ENGINE_set_default_digests(ENGINE *e) | |
97 { | |
98 if(e->digests) | |
99 { | |
100 const int *nids; | |
101 int num_nids = e->digests(e, NULL, &nids, 0); | |
102 if(num_nids > 0) | |
103 return engine_table_register(&digest_table, | |
104 engine_unregister_all_digests, 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 digest 'nid' */ | |
113 ENGINE *ENGINE_get_digest_engine(int nid) | |
114 { | |
115 return engine_table_select(&digest_table, nid); | |
116 } | |
117 | |
118 /* Obtains a digest implementation from an ENGINE functional reference */ | |
119 const EVP_MD *ENGINE_get_digest(ENGINE *e, int nid) | |
120 { | |
121 const EVP_MD *ret; | |
122 ENGINE_DIGESTS_PTR fn = ENGINE_get_digests(e); | |
123 if(!fn || !fn(e, &ret, NULL, nid)) | |
124 { | |
125 ENGINEerr(ENGINE_F_ENGINE_GET_DIGEST, | |
126 ENGINE_R_UNIMPLEMENTED_DIGEST); | |
127 return NULL; | |
128 } | |
129 return ret; | |
130 } | |
131 | |
132 /* Gets the digest callback from an ENGINE structure */ | |
133 ENGINE_DIGESTS_PTR ENGINE_get_digests(const ENGINE *e) | |
134 { | |
135 return e->digests; | |
136 } | |
137 | |
138 /* Sets the digest callback in an ENGINE structure */ | |
139 int ENGINE_set_digests(ENGINE *e, ENGINE_DIGESTS_PTR f) | |
140 { | |
141 e->digests = f; | |
142 return 1; | |
143 } | |
OLD | NEW |