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/*
* Copyright 2025 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/*
* This file provides implementation of various array allocation routines that
* perform integer overflow checking for size calculation.
*/
#include "internal/mem_alloc_utils.h"
#include <openssl/crypto.h>
void *CRYPTO_malloc_array(size_t num, size_t size, const char *file, int line)
{
size_t bytes;
if (ossl_unlikely(!ossl_size_mul(num, size, &bytes, file, line)))
return NULL;
return CRYPTO_malloc(bytes, file, line);
}
void *CRYPTO_calloc(size_t num, size_t size, const char *file, int line)
{
size_t bytes;
if (ossl_unlikely(!ossl_size_mul(num, size, &bytes, file, line)))
return NULL;
return CRYPTO_zalloc(bytes, file, line);
}
void *CRYPTO_aligned_alloc_array(size_t num, size_t size, size_t align,
void **freeptr, const char *file, int line)
{
size_t bytes;
if (ossl_unlikely(!ossl_size_mul(num, size, &bytes, file, line))) {
*freeptr = NULL;
return NULL;
}
return CRYPTO_aligned_alloc(bytes, align, freeptr, file, line);
}
void *CRYPTO_realloc_array(void *addr, size_t num, size_t size,
const char *file, int line)
{
size_t bytes;
if (ossl_unlikely(!ossl_size_mul(num, size, &bytes, file, line)))
return NULL;
return CRYPTO_realloc(addr, bytes, file, line);
}
void *CRYPTO_clear_realloc_array(void *addr, size_t old_num, size_t num,
size_t size, const char *file, int line)
{
size_t old_bytes, bytes = 0;
if (ossl_unlikely(!ossl_size_mul(old_num, size, &old_bytes, file, line)
|| !ossl_size_mul(num, size, &bytes, file, line)))
return NULL;
return CRYPTO_clear_realloc(addr, old_bytes, bytes, file, line);
}
void *CRYPTO_secure_malloc_array(size_t num, size_t size,
const char *file, int line)
{
size_t bytes;
if (ossl_unlikely(!ossl_size_mul(num, size, &bytes, file, line)))
return NULL;
return CRYPTO_secure_malloc(bytes, file, line);
}
void *CRYPTO_secure_calloc(size_t num, size_t size, const char *file, int line)
{
size_t bytes;
if (ossl_unlikely(!ossl_size_mul(num, size, &bytes, file, line)))
return NULL;
return CRYPTO_secure_zalloc(bytes, file, line);
}
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