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- /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
- /* ====================================================================
- * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com). */
-
- #include <openssl/ex_data.h>
-
- #include <openssl/err.h>
- #include <openssl/thread.h>
-
- #include "crypto_error.h"
- #include "internal.h"
-
-
- /* global_impl is the implementation that we use at runtime. */
- static const CRYPTO_EX_DATA_IMPL *global_impl = NULL;
-
- /* ex_data_default_impl is a the default implementation, defined in
- * ex_data_impl.c. */
- extern const CRYPTO_EX_DATA_IMPL ex_data_default_impl;
-
- /* get_impl returns the current ex_data implementatation. */
- static const CRYPTO_EX_DATA_IMPL *get_impl(void) {
- const CRYPTO_EX_DATA_IMPL *impl;
-
- CRYPTO_r_lock(CRYPTO_LOCK_EX_DATA);
- impl = global_impl;
- CRYPTO_r_unlock(CRYPTO_LOCK_EX_DATA);
-
- if (impl != NULL) {
- return impl;
- }
-
- CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA);
- if (global_impl == NULL) {
- global_impl = &ex_data_default_impl;
- }
- impl = global_impl;
- CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA);
- return impl;
- }
-
- int CRYPTO_get_ex_new_index(int class_value, long argl, void *argp,
- CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func,
- CRYPTO_EX_free *free_func) {
- const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
- return impl->get_new_index(class_value, argl, argp, new_func, dup_func,
- free_func);
- }
-
- int CRYPTO_set_ex_data(CRYPTO_EX_DATA *ad, int index, void *val) {
- int n, i;
-
- if (ad->sk == NULL) {
- ad->sk = sk_void_new_null();
- if (ad->sk == NULL) {
- OPENSSL_PUT_ERROR(CRYPTO, CRYPTO_set_ex_data, ERR_R_MALLOC_FAILURE);
- return 0;
- }
- }
-
- n = sk_void_num(ad->sk);
-
- /* Add NULL values until the stack is long enough. */
- for (i = n; i <= index; i++) {
- if (!sk_void_push(ad->sk, NULL)) {
- OPENSSL_PUT_ERROR(CRYPTO, CRYPTO_set_ex_data, ERR_R_MALLOC_FAILURE);
- return 0;
- }
- }
-
- sk_void_set(ad->sk, index, val);
- return 1;
- }
-
- void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx) {
- if (ad->sk == NULL || idx < 0 || (size_t)idx >= sk_void_num(ad->sk)) {
- return NULL;
- }
- return sk_void_value(ad->sk, idx);
- }
-
- int CRYPTO_ex_data_new_class(void) {
- const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
- return impl->new_class();
- }
-
- int CRYPTO_new_ex_data(int class_value, void *obj, CRYPTO_EX_DATA *ad) {
- const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
- return impl->new_ex_data(class_value, obj, ad);
- }
-
- int CRYPTO_dup_ex_data(int class_value, CRYPTO_EX_DATA *to,
- const CRYPTO_EX_DATA *from) {
- const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
- return impl->dup_ex_data(class_value, to, from);
- }
-
- void CRYPTO_free_ex_data(int class_value, void *obj, CRYPTO_EX_DATA *ad) {
- const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
- impl->free_ex_data(class_value, obj, ad);
- }
-
- const CRYPTO_EX_DATA_IMPL *CRYPTO_get_ex_data_implementation(void) {
- return get_impl();
- }
-
- int CRYPTO_set_ex_data_implementation(const CRYPTO_EX_DATA_IMPL *impl) {
- int ret = 0;
-
- CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA);
- if (global_impl == NULL) {
- ret = 1;
- global_impl = impl;
- }
- CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA);
-
- return ret;
- }
-
- void CRYPTO_cleanup_all_ex_data(void) {
- const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
- impl->cleanup();
- }
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