70 lines
2.5 KiB
C
70 lines
2.5 KiB
C
/*
|
|
* FreeRTOS-Cellular-Interface v1.1.0
|
|
* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
|
*
|
|
* 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
|
|
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
|
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* https://www.FreeRTOS.org
|
|
* https://github.com/FreeRTOS
|
|
*/
|
|
|
|
/**
|
|
* @file strtok.c
|
|
* @brief Creates a stub for strtok. This stub checks if, for the input copy
|
|
* length, the destination and source are valid accessible memory.
|
|
*/
|
|
|
|
#include <string.h>
|
|
|
|
/* This is a clang macro not available on linux */
|
|
#ifndef __has_builtin
|
|
#define __has_builtin( x ) 0
|
|
#endif
|
|
|
|
#if __has_builtin( __builtin___strtok )
|
|
char * __builtin___strtok( char * s,
|
|
const char * delim )
|
|
{
|
|
if( ( __CPROVER_w_ok( s, 1 ), "write" ) && ( __CPROVER_r_ok( s, 1 ), "read" ) )
|
|
{
|
|
while( *s != '\0' )
|
|
{
|
|
if( ( int ) *s == c )
|
|
{
|
|
return s;
|
|
}
|
|
|
|
if( ( __CPROVER_w_ok( s + 1, 1 ), "write" ) && ( __CPROVER_r_ok( s + 1, 1 ), "read" ) )
|
|
{
|
|
s++;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
}
|
|
#else /* if __has_builtin( __builtin___strtok ) */
|
|
char * strtok( char * s,
|
|
const char * delim )
|
|
{
|
|
__CPROVER_assert( __CPROVER_w_ok( s, strlen( s ) ), "write" );
|
|
__CPROVER_assert( __CPROVER_r_ok( s, strlen( s ) ), "read" );
|
|
return s;
|
|
}
|
|
#endif /* if __has_builtin( __builtin___strchr ) */
|