1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
57 /* ====================================================================
58 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
67 * 2. Redistributions in binary form must reproduce the above copyright
68 * notice, this list of conditions and the following disclaimer in
69 * the documentation and/or other materials provided with the
72 * 3. All advertising materials mentioning features or use of this
73 * software must display the following acknowledgment:
74 * "This product includes software developed by the OpenSSL Project
75 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
78 * endorse or promote products derived from this software without
79 * prior written permission. For written permission, please contact
80 * openssl-core@openssl.org.
82 * 5. Products derived from this software may not be called "OpenSSL"
83 * nor may "OpenSSL" appear in their names without prior written
84 * permission of the OpenSSL Project.
86 * 6. Redistributions of any form whatsoever must retain the following
88 * "This product includes software developed by the OpenSSL Project
89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
102 * OF THE POSSIBILITY OF SUCH DAMAGE.
103 * ====================================================================
105 * This product includes cryptographic software written by Eric Young
106 * (eay@cryptsoft.com). This product includes software written by Tim
107 * Hudson (tjh@cryptsoft.com). */
109 #include <openssl/ex_data.h>
111 #include <openssl/err.h>
112 #include <openssl/thread.h>
114 #include "crypto_error.h"
115 #include "internal.h"
118 /* global_impl is the implementation that we use at runtime. */
119 static const CRYPTO_EX_DATA_IMPL *global_impl = NULL;
121 /* ex_data_default_impl is a the default implementation, defined in
123 extern const CRYPTO_EX_DATA_IMPL ex_data_default_impl;
125 /* get_impl returns the current ex_data implementatation. */
126 static const CRYPTO_EX_DATA_IMPL *get_impl() {
127 const CRYPTO_EX_DATA_IMPL *impl;
129 CRYPTO_r_lock(CRYPTO_LOCK_EX_DATA);
131 CRYPTO_r_unlock(CRYPTO_LOCK_EX_DATA);
137 CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA);
138 if (global_impl == NULL) {
139 global_impl = &ex_data_default_impl;
142 CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA);
146 int CRYPTO_get_ex_new_index(int class_value, long argl, void *argp,
147 CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func,
148 CRYPTO_EX_free *free_func) {
149 const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
150 return impl->get_new_index(class_value, argl, argp, new_func, dup_func,
154 int CRYPTO_set_ex_data(CRYPTO_EX_DATA *ad, int index, void *val) {
157 if (ad->sk == NULL) {
158 ad->sk = sk_void_new_null();
159 if (ad->sk == NULL) {
160 OPENSSL_PUT_ERROR(CRYPTO, CRYPTO_set_ex_data, ERR_R_MALLOC_FAILURE);
165 n = sk_void_num(ad->sk);
167 /* Add NULL values until the stack is long enough. */
168 for (i = n; i <= index; i++) {
169 if (!sk_void_push(ad->sk, NULL)) {
170 OPENSSL_PUT_ERROR(CRYPTO, CRYPTO_set_ex_data, ERR_R_MALLOC_FAILURE);
175 sk_void_set(ad->sk, index, val);
179 void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx) {
180 if (ad->sk == NULL || idx >= sk_void_num(ad->sk)) {
183 return sk_void_value(ad->sk, idx);
186 int CRYPTO_ex_data_new_class(void) {
187 const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
188 return impl->new_class();
191 int CRYPTO_new_ex_data(int class_value, void *obj, CRYPTO_EX_DATA *ad) {
192 const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
193 return impl->new_ex_data(class_value, obj, ad);
196 int CRYPTO_dup_ex_data(int class_value, CRYPTO_EX_DATA *to,
197 const CRYPTO_EX_DATA *from) {
198 const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
199 return impl->dup_ex_data(class_value, to, from);
202 void CRYPTO_free_ex_data(int class_value, void *obj, CRYPTO_EX_DATA *ad) {
203 const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
204 impl->free_ex_data(class_value, obj, ad);
207 const CRYPTO_EX_DATA_IMPL *CRYPTO_get_ex_data_implementation(void) {
211 int CRYPTO_set_ex_data_implementation(const CRYPTO_EX_DATA_IMPL *impl) {
214 CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA);
215 if (global_impl == NULL) {
219 CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA);
224 void CRYPTO_cleanup_all_ex_data(void) {
225 const CRYPTO_EX_DATA_IMPL *const impl = get_impl();