95c29f3cd1
Initial fork from f2d678e6e89b6508147086610e985d4e8416e867 (1.0.2 beta). (This change contains substantial changes from the original and effectively starts a new history.)
228 lines
8.8 KiB
C
228 lines
8.8 KiB
C
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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/* ====================================================================
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* Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com). */
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#include <openssl/ex_data.h>
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#include <openssl/err.h>
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#include <openssl/thread.h>
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#include "crypto_error.h"
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#include "internal.h"
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/* global_impl is the implementation that we use at runtime. */
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static const CRYPTO_EX_DATA_IMPL *global_impl = NULL;
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/* ex_data_default_impl is a the default implementation, defined in
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* ex_data_impl.c. */
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extern const CRYPTO_EX_DATA_IMPL ex_data_default_impl;
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/* get_impl returns the current ex_data implementatation. */
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static const CRYPTO_EX_DATA_IMPL *get_impl() {
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const CRYPTO_EX_DATA_IMPL *impl;
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CRYPTO_r_lock(CRYPTO_LOCK_EX_DATA);
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impl = global_impl;
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CRYPTO_r_unlock(CRYPTO_LOCK_EX_DATA);
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if (impl != NULL) {
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return impl;
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}
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CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA);
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if (global_impl == NULL) {
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global_impl = &ex_data_default_impl;
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}
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impl = global_impl;
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CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA);
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return impl;
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}
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int CRYPTO_get_ex_new_index(int class_value, long argl, void *argp,
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CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func,
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CRYPTO_EX_free *free_func) {
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const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
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return impl->get_new_index(class_value, argl, argp, new_func, dup_func,
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free_func);
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}
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int CRYPTO_set_ex_data(CRYPTO_EX_DATA *ad, int index, void *val) {
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int n, i;
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if (ad->sk == NULL) {
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ad->sk = sk_void_new_null();
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if (ad->sk == NULL) {
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OPENSSL_PUT_ERROR(CRYPTO, CRYPTO_set_ex_data, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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n = sk_void_num(ad->sk);
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/* Add NULL values until the stack is long enough. */
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for (i = n; i <= index; i++) {
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if (!sk_void_push(ad->sk, NULL)) {
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OPENSSL_PUT_ERROR(CRYPTO, CRYPTO_set_ex_data, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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sk_void_set(ad->sk, index, val);
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return 1;
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}
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void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx) {
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if (ad->sk == NULL || idx >= sk_void_num(ad->sk)) {
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return NULL;
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}
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return sk_void_value(ad->sk, idx);
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}
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int CRYPTO_ex_data_new_class(void) {
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const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
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return impl->new_class();
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}
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int CRYPTO_new_ex_data(int class_value, void *obj, CRYPTO_EX_DATA *ad) {
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const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
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return impl->new_ex_data(class_value, obj, ad);
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}
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int CRYPTO_dup_ex_data(int class_value, CRYPTO_EX_DATA *to,
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const CRYPTO_EX_DATA *from) {
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const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
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return impl->dup_ex_data(class_value, to, from);
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}
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void CRYPTO_free_ex_data(int class_value, void *obj, CRYPTO_EX_DATA *ad) {
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const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
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impl->free_ex_data(class_value, obj, ad);
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}
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const CRYPTO_EX_DATA_IMPL *CRYPTO_get_ex_data_implementation(void) {
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return get_impl();
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}
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int CRYPTO_set_ex_data_implementation(const CRYPTO_EX_DATA_IMPL *impl) {
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int ret = 0;
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CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA);
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if (global_impl == NULL) {
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ret = 1;
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global_impl = impl;
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}
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CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA);
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return ret;
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}
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void CRYPTO_cleanup_all_ex_data(void) {
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const CRYPTO_EX_DATA_IMPL *const impl = get_impl();
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impl->cleanup();
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}
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