httpHeaderStrncpy.c

/*
 * coreHTTP
 * Copyright (C) 2024 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * SPDX-License-Identifier: MIT
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

/**
 * @file httpHeaderStrncpy.c
 * @brief Creates a stub for httpHeaderStrncpy so that the proofs for
 * HTTPClient_AddHeader, HTTPClient_AddRangeHeader, and
 * HTTPClient_InitializeRequestHeaders run much faster. This stub checks if, for
 * the input copy length, the destination and source are valid accessible
 * memory.
 */

#include <string.h>
#include <stdint.h>

char * httpHeaderStrncpy( char * pDest,
                          const char * pSrc,
                          size_t len,
                          uint8_t isField )
{
    __CPROVER_assert( __CPROVER_w_ok( pDest, len ), "write" );
    __CPROVER_assert( __CPROVER_r_ok( pSrc, len ), "read" );
    return pDest;
}