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diff --git a/src/lib/libcrypto/engine/tb_rand.c b/src/lib/libcrypto/engine/tb_rand.c
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1/* $OpenBSD: tb_rand.c,v 1.6 2014/06/12 15:49:29 deraadt Exp $ */
2/* ====================================================================
3 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * licensing@OpenSSL.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55
56#include "eng_int.h"
57
58/* If this symbol is defined then ENGINE_get_default_RAND(), the function that is
59 * used by RAND to hook in implementation code and cache defaults (etc), will
60 * display brief debugging summaries to stderr with the 'nid'. */
61/* #define ENGINE_RAND_DEBUG */
62
63static ENGINE_TABLE *rand_table = NULL;
64static const int dummy_nid = 1;
65
66void
67ENGINE_unregister_RAND(ENGINE *e)
68{
69 engine_table_unregister(&rand_table, e);
70}
71
72static void
73engine_unregister_all_RAND(void)
74{
75 engine_table_cleanup(&rand_table);
76}
77
78int
79ENGINE_register_RAND(ENGINE *e)
80{
81 if (e->rand_meth)
82 return engine_table_register(&rand_table,
83 engine_unregister_all_RAND, e, &dummy_nid, 1, 0);
84 return 1;
85}
86
87void
88ENGINE_register_all_RAND(void)
89{
90 ENGINE *e;
91
92 for (e = ENGINE_get_first(); e; e = ENGINE_get_next(e))
93 ENGINE_register_RAND(e);
94}
95
96int
97ENGINE_set_default_RAND(ENGINE *e)
98{
99 if (e->rand_meth)
100 return engine_table_register(&rand_table,
101 engine_unregister_all_RAND, e, &dummy_nid, 1, 1);
102 return 1;
103}
104
105/* Exposed API function to get a functional reference from the implementation
106 * table (ie. try to get a functional reference from the tabled structural
107 * references). */
108ENGINE *
109ENGINE_get_default_RAND(void)
110{
111 return engine_table_select(&rand_table, dummy_nid);
112}
113
114/* Obtains an RAND implementation from an ENGINE functional reference */
115const RAND_METHOD *
116ENGINE_get_RAND(const ENGINE *e)
117{
118 return e->rand_meth;
119}
120
121/* Sets an RAND implementation in an ENGINE structure */
122int
123ENGINE_set_RAND(ENGINE *e, const RAND_METHOD *rand_meth)
124{
125 e->rand_meth = rand_meth;
126 return 1;
127}