| /* 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 >= 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(); |
| } |