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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() {
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 >= 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();
}