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/* memory.c
*
* Copyright (C) 2006-2015 wolfSSL Inc.
*
* This file is part of wolfSSL. (formerly known as CyaSSL)
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <wolfssl/wolfcrypt/settings.h>
/* check old macros @wc_fips */
#if defined(USE_CYASSL_MEMORY) && !defined(USE_WOLFSSL_MEMORY)
#define USE_WOLFSSL_MEMORY
#endif
#if defined(CYASSL_MALLOC_CHECK) && !defined(WOLFSSL_MALLOC_CHECK)
#define WOLFSSL_MALLOC_CHECK
#endif
#ifdef USE_WOLFSSL_MEMORY
#include <wolfssl/wolfcrypt/memory.h>
#include <wolfssl/wolfcrypt/error-crypt.h>
#ifdef WOLFSSL_MALLOC_CHECK
#include <stdio.h>
#endif
/* Set these to default values initially. */
static wolfSSL_Malloc_cb malloc_function = 0;
static wolfSSL_Free_cb free_function = 0;
static wolfSSL_Realloc_cb realloc_function = 0;
int wolfSSL_SetAllocators(wolfSSL_Malloc_cb mf,
wolfSSL_Free_cb ff,
wolfSSL_Realloc_cb rf)
{
int res = 0;
if (mf)
malloc_function = mf;
else
res = BAD_FUNC_ARG;
if (ff)
free_function = ff;
else
res = BAD_FUNC_ARG;
if (rf)
realloc_function = rf;
else
res = BAD_FUNC_ARG;
return res;
}
void* wolfSSL_Malloc(size_t size)
{
void* res = 0;
if (malloc_function)
res = malloc_function(size);
else
res = malloc(size);
#ifdef WOLFSSL_MALLOC_CHECK
if (res == NULL)
puts("wolfSSL_malloc failed");
#endif
return res;
}
void wolfSSL_Free(void *ptr)
{
if (free_function)
free_function(ptr);
else
free(ptr);
}
void* wolfSSL_Realloc(void *ptr, size_t size)
{
void* res = 0;
if (realloc_function)
res = realloc_function(ptr, size);
else
res = realloc(ptr, size);
return res;
}
#endif /* USE_WOLFSSL_MEMORY */
#ifdef HAVE_IO_POOL
/* Example for user io pool, shared build may need definitions in lib proper */
#include <wolfssl/wolfcrypt/types.h>
#include <stdlib.h>
#ifndef HAVE_THREAD_LS
#error "Oops, simple I/O pool example needs thread local storage"
#endif
/* allow simple per thread in and out pools */
/* use 17k size sense max record size is 16k plus overhead */
static THREAD_LS_T byte pool_in[17*1024];
static THREAD_LS_T byte pool_out[17*1024];
void* XMALLOC(size_t n, void* heap, int type)
{
(void)heap;
if (type == DYNAMIC_TYPE_IN_BUFFER) {
if (n < sizeof(pool_in))
return pool_in;
else
return NULL;
}
if (type == DYNAMIC_TYPE_OUT_BUFFER) {
if (n < sizeof(pool_out))
return pool_out;
else
return NULL;
}
return malloc(n);
}
void* XREALLOC(void *p, size_t n, void* heap, int type)
{
(void)heap;
if (type == DYNAMIC_TYPE_IN_BUFFER) {
if (n < sizeof(pool_in))
return pool_in;
else
return NULL;
}
if (type == DYNAMIC_TYPE_OUT_BUFFER) {
if (n < sizeof(pool_out))
return pool_out;
else
return NULL;
}
return realloc(p, n);
}
/* unit api calls, let's make sure visible with WOLFSSL_API */
WOLFSSL_API void XFREE(void *p, void* heap, int type)
{
(void)heap;
if (type == DYNAMIC_TYPE_IN_BUFFER)
return; /* do nothing, static pool */
if (type == DYNAMIC_TYPE_OUT_BUFFER)
return; /* do nothing, static pool */
free(p);
}
#endif /* HAVE_IO_POOL */
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