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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). */
#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 a new object of that type is created, freed
* and 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|. See the
* descriptions of the callback typedefs for details of when they are
* called. Any of the callback arguments may be NULL. The |argl| and |argp|
* arguments are opaque values that are passed to the callbacks. It returns the
* new index or a negative number on error.
*
* TODO(fork): this should follow the standard calling convention. */
OPENSSL_EXPORT int TYPE_get_ex_new_index(long argl, void *argp,
CRYPTO_EX_new *new_func,
CRYPTO_EX_dup *dup_func,
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_new is the type of a callback function that is called whenever a
* new object of a given class is created. For example, if this callback has
* been passed to |SSL_get_ex_new_index| then it'll be called each time an SSL*
* is created.
*
* 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.
*
* TODO(fork): the |ptr| argument is always NULL, no? */
typedef int CRYPTO_EX_new(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
int index, long argl, void *argp);
/* CRYPTO_EX_free is a callback function that is called when an object of the
* class is being destroyed. See |CRYPTO_EX_new| for a discussion of the
* arguments.
*
* If |CRYPTO_get_ex_new_index| was called after the creation of objects of the
* class that this applies to then, when those those objects are destroyed,
* this callback will be called with a NULL value for |ptr|. */
typedef void CRYPTO_EX_free(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
int index, long argl, void *argp);
/* CRYPTO_EX_dup is a callback function that is called when an object of the
* class is being copied and thus the ex_data linked to it also needs to be
* copied. On entry, |*from_d| points to the data for this index from the
* original object. When the callback returns, |*from_d| will be set as the
* data for this index in |to|.
*
* If |CRYPTO_get_ex_new_index| was called after the creation of objects of the
* class that this applies to then, when those those objects are copies, this
* callback will be called with a NULL value for |*from_d|. */
typedef int CRYPTO_EX_dup(CRYPTO_EX_DATA *to, const CRYPTO_EX_DATA *from,
void **from_d, int index, long argl, void *argp);
/* Deprecated functions. */
/* CRYPTO_cleanup_all_ex_data does nothing. */
OPENSSL_EXPORT void CRYPTO_cleanup_all_ex_data(void);
struct crypto_ex_data_st {
STACK_OF(void) *sk;
};
#if defined(__cplusplus)
} /* extern C */
#endif
#endif /* OPENSSL_HEADER_EX_DATA_H */
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