mbedtls/programs/util/strerror.c

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/*
* Translate error code to error string
*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
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* http://www.apache.org/licenses/LICENSE-2.0
*
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
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* This file is part of mbed TLS (https://tls.mbed.org)
*/
#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
#else
#include <stdio.h>
#define mbedtls_printf printf
#endif
#if defined(MBEDTLS_ERROR_C) || defined(MBEDTLS_ERROR_STRERROR_DUMMY)
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#include "mbedtls/error.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#endif
#define USAGE \
"\n usage: strerror <errorcode>\n" \
"\n where <errorcode> can be a decimal or hexadecimal (starts with 0x or -0x)\n"
#if !defined(MBEDTLS_ERROR_C) && !defined(MBEDTLS_ERROR_STRERROR_DUMMY)
int main( void )
{
mbedtls_printf("MBEDTLS_ERROR_C and/or MBEDTLS_ERROR_STRERROR_DUMMY not defined.\n");
return( 0 );
}
#else
int main( int argc, char *argv[] )
{
long int val;
char *end = argv[1];
if( argc != 2 )
{
mbedtls_printf( USAGE );
return( 0 );
}
val = strtol( argv[1], &end, 10 );
if( *end != '\0' )
{
val = strtol( argv[1], &end, 16 );
if( *end != '\0' )
{
mbedtls_printf( USAGE );
return( 0 );
}
}
if( val > 0 )
val = -val;
if( val != 0 )
{
char error_buf[200];
mbedtls_strerror( val, error_buf, 200 );
mbedtls_printf("Last error was: -0x%04x - %s\n\n", (int) -val, error_buf );
}
#if defined(_WIN32)
mbedtls_printf( " + Press Enter to exit this program.\n" );
fflush( stdout ); getchar();
#endif
return( val );
}
#endif /* MBEDTLS_ERROR_C */