| /* 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). */ | |
| #ifndef OPENSSL_HEADER_EX_DATA_H | |
| #define OPENSSL_HEADER_EX_DATA_H | |
| #include <openssl/base.h> | |
| #include <openssl/stack.h> | |
| #if defined(__cplusplus) | |
| extern "C" { | |
| #endif | |
| // ex_data is a mechanism for associating arbitrary extra data with objects. | |
| // For each type of object that supports ex_data, different users can be | |
| // assigned indexes in which to store their data. Each index has callback | |
| // functions that are called when an object of that type is freed or | |
| // duplicated. | |
| typedef struct crypto_ex_data_st CRYPTO_EX_DATA; | |
| // Type-specific functions. | |
| // | |
| // Each type that supports ex_data provides three functions: | |
| #if 0 // Sample | |
| // TYPE_get_ex_new_index allocates a new index for |TYPE|. An optional | |
| // |free_func| argument may be provided which is called when the owning object | |
| // is destroyed. See |CRYPTO_EX_free| for details. The |argl| and |argp| | |
| // arguments are opaque values that are passed to the callback. It returns the | |
| // new index or a negative number on error. | |
| OPENSSL_EXPORT int TYPE_get_ex_new_index(long argl, void *argp, | |
| CRYPTO_EX_unused *unused, | |
| CRYPTO_EX_dup *dup_unused, | |
| CRYPTO_EX_free *free_func); | |
| // TYPE_set_ex_data sets an extra data pointer on |t|. The |index| argument | |
| // should have been returned from a previous call to |TYPE_get_ex_new_index|. | |
| OPENSSL_EXPORT int TYPE_set_ex_data(TYPE *t, int index, void *arg); | |
| // TYPE_get_ex_data returns an extra data pointer for |t|, or NULL if no such | |
| // pointer exists. The |index| argument should have been returned from a | |
| // previous call to |TYPE_get_ex_new_index|. | |
| OPENSSL_EXPORT void *TYPE_get_ex_data(const TYPE *t, int index); | |
| #endif // Sample | |
| // Callback types. | |
| // CRYPTO_EX_free is a callback function that is called when an object of the | |
| // class with extra data pointers is being destroyed. For example, if this | |
| // callback has been passed to |SSL_get_ex_new_index| then it may be called each | |
| // time an |SSL*| is destroyed. | |
| // | |
| // The callback is passed the new object (i.e. the |SSL*|) in |parent|. The | |
| // arguments |argl| and |argp| contain opaque values that were given to | |
| // |CRYPTO_get_ex_new_index|. The callback should return one on success, but | |
| // the value is ignored. | |
| // | |
| // This callback may be called with a NULL value for |ptr| if |parent| has no | |
| // value set for this index. However, the callbacks may also be skipped entirely | |
| // if no extra data pointers are set on |parent| at all. | |
| typedef void CRYPTO_EX_free(void *parent, void *ptr, CRYPTO_EX_DATA *ad, | |
| int index, long argl, void *argp); | |
| // Deprecated functions. | |
| // CRYPTO_cleanup_all_ex_data does nothing. | |
| OPENSSL_EXPORT void CRYPTO_cleanup_all_ex_data(void); | |
| // CRYPTO_EX_dup is a legacy callback function type which is ignored. | |
| typedef int CRYPTO_EX_dup(CRYPTO_EX_DATA *to, const CRYPTO_EX_DATA *from, | |
| void **from_d, int index, long argl, void *argp); | |
| // Private structures. | |
| // CRYPTO_EX_unused is a placeholder for an unused callback. It is aliased to | |
| // int to ensure non-NULL callers fail to compile rather than fail silently. | |
| typedef int CRYPTO_EX_unused; | |
| struct crypto_ex_data_st { | |
| STACK_OF(void) *sk; | |
| }; | |
| #if defined(__cplusplus) | |
| } // extern C | |
| #endif | |
| #endif // OPENSSL_HEADER_EX_DATA_H |