/* crypto/mem.c */
/* 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.]
*/
#include <stdio.h>
#include <stdlib.h>
#include <openssl/crypto.h>
#include "cryptlib.h"
static int allow_customize = 1; /* we provide flexible functions for */
static int allow_customize_debug = 1; /* exchanging memory-related functions
* at run-time, but this must be done
* before any blocks are actually
* allocated; or we'll run into huge
* problems when malloc/free pairs
* don't match etc. */
/*
* the following pointers may be changed as long as 'allow_customize' is set
*/
static void *(*malloc_func) (size_t) = malloc;
static void *default_malloc_ex(size_t num, const char *file, int line)
{
return malloc_func(num);
}
static void *(*malloc_ex_func) (size_t, const char *file, int line)
= default_malloc_ex;
#ifdef OPENSSL_SYS_VMS
# if __INITIAL_POINTER_SIZE == 64
# define realloc _realloc64
# elif __INITIAL_POINTER_SIZE == 32
# define realloc _realloc32
# endif
#endif
static void *(*realloc_func) (void *, size_t) = realloc;
static void *default_realloc_ex(void *str, size_t num,
const char *file, int line)
{
return realloc_func(str, num);
}
static void *(*realloc_ex_func) (void *, size_t, const char *file, int line)
= default_realloc_ex;
#ifdef OPENSSL_SYS_VMS
static void (*free_func) (__void_ptr64) = free;
#else
static void (*free_func) (void *) = free;
#endif
static void *(*malloc_locked_func) (size_t) = malloc;
static void *default_malloc_locked_ex(size_t num, const char *file, int line)
{
return malloc_locked_func(num);
}
static void *(*malloc_locked_ex_func) (size_t, const char *file, int line)
= default_malloc_locked_ex;
#ifdef OPENSSL_SYS_VMS
static void (*free_locked_func) (__void_ptr64) = free;
#else
static void (*free_locked_func) (void *) = free;
#endif
/* may be changed as long as 'allow_customize_debug' is set */
/* XXX use correct function pointer types */
#ifdef CRYPTO_MDEBUG
/* use default functions from mem_dbg.c */
static void (*malloc_debug_func) (void *, int, const char *, int, int)
= CRYPTO_dbg_malloc;
static void (*realloc_debug_func) (void *, void *, int, const char *, int,
int)
= CRYPTO_dbg_realloc;
static void (*free_debug_func) (void *, int) = CRYPTO_dbg_free;
static void (*set_debug_options_func) (long) = CRYPTO_dbg_set_options;
static long (*get_debug_options_func) (void) = CRYPTO_dbg_get_options;
#else
/*
* applications can use CRYPTO_malloc_debug_init() to select above case at
* run-time
*/
static void (*malloc_debug_func) (void *, int, const char *, int, int) = NULL;
static void (*realloc_debug_func) (void *, void *, int, const char *, int,
int)
= NULL;
static void (*free_debug_func) (void *, int) = NULL;
static void (*set_debug_options_func) (long) = NULL;
static long (*get_debug_options_func) (void) = NULL;
#endif
int CRYPTO_set_mem_functions(void *(*m) (size_t), void *(*r) (void *, size_t),
void (*f) (void *))
{
if (!allow_customize)
return 0;
if ((m == 0) || (r == 0) || (f == 0))
return 0;
/* Dummy call just to ensure OPENSSL_init() gets linked in */
OPENSSL_init();
malloc_func = m;
malloc_ex_func = default_malloc_ex;
realloc_func = r;
realloc_ex_func = default_realloc_ex;
free_func = f;
malloc_locked_func = m;
malloc_locked_ex_func = default_malloc_locked_ex;
free_locked_func = f;
return 1;
}
int CRYPTO_set_mem_ex_functions(void *(*m) (size_t, const char *, int),
void *(*r) (void *, size_t, const char *,
int), void (*f) (void *))
{
if (!allow_customize)
return 0;
if ((m == 0) || (r == 0) || (f == 0))
return 0;
malloc_func = 0;
malloc_ex_func = m;
realloc_func = 0;
realloc_ex_func = r;
free_func = f;
malloc_locked_func = 0;
malloc_locked_ex_func = m;
free_locked_func = f;
return 1;
}
int CRYPTO_set_locked_mem_functions(void *(*m) (size_t), void (*f) (void *))
{
if (!allow_customize)
return 0;
if ((m == NULL) || (f == NULL))
return 0;
malloc_locked_func = m;
malloc_locked_ex_func = default_malloc_locked_ex;
free_locked_func = f;
return 1;
}
int CRYPTO_set_locked_mem_ex_functions(void *(*m) (size_t, const char *, int),
void (*f) (void *))
{
if (!allow_customize)
return 0;
if ((m == NULL) || (f == NULL))
return 0;
malloc_locked_func = 0;
malloc_locked_ex_func = m;
free_func = f;
return 1;
}
int CRYPTO_set_mem_debug_functions(void (*m)
(void *, int, const char *, int, int),
void (*r) (void *, void *, int,
const char *, int, int),
void (*f) (void *, int), void (*so) (lo