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/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0
*
* 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.
*/
#include <test/helpers.h>
#include <test/macros.h>
#include <string.h>
#if defined(MBEDTLS_CHECK_PARAMS)
#include <setjmp.h>
#endif
/*----------------------------------------------------------------------------*/
/* Static global variables */
#if defined(MBEDTLS_CHECK_PARAMS)
typedef struct
{
uint8_t expected_call;
uint8_t expected_call_happened;
jmp_buf state;
mbedtls_test_param_failed_location_record_t location_record;
}
param_failed_ctx_t;
static param_failed_ctx_t param_failed_ctx;
#endif
#if defined(MBEDTLS_PLATFORM_C)
static mbedtls_platform_context platform_ctx;
#endif
mbedtls_test_info_t mbedtls_test_info;
/*----------------------------------------------------------------------------*/
/* Helper Functions */
int mbedtls_test_platform_setup( void )
{
int ret = 0;
#if defined(MBEDTLS_PLATFORM_C)
ret = mbedtls_platform_setup( &platform_ctx );
#endif /* MBEDTLS_PLATFORM_C */
return( ret );
}
void mbedtls_test_platform_teardown( void )
{
#if defined(MBEDTLS_PLATFORM_C)
mbedtls_platform_teardown( &platform_ctx );
#endif /* MBEDTLS_PLATFORM_C */
}
static int ascii2uc(const char c, unsigned char *uc)
{
if( ( c >= '0' ) && ( c <= '9' ) )
*uc = c - '0';
else if( ( c >= 'a' ) && ( c <= 'f' ) )
*uc = c - 'a' + 10;
else if( ( c >= 'A' ) && ( c <= 'F' ) )
*uc = c - 'A' + 10;
else
return( -1 );
return( 0 );
}
void mbedtls_test_fail( const char *test, int line_no, const char* filename )
{
if( mbedtls_test_info.result == MBEDTLS_TEST_RESULT_FAILED )
{
/* We've already recorded the test as having failed. Don't
* overwrite any previous information about the failure. */
return;
}
mbedtls_test_info.result = MBEDTLS_TEST_RESULT_FAILED;
mbedtls_test_info.test = test;
mbedtls_test_info.line_no = line_no;
mbedtls_test_info.filename = filename;
}
void mbedtls_test_skip( const char *test, int line_no, const char* filename )
{
mbedtls_test_info.result = MBEDTLS_TEST_RESULT_SKIPPED;
mbedtls_test_info.test = test;
mbedtls_test_info.line_no = line_no;
mbedtls_test_info.filename = filename;
}
void mbedtls_test_set_step( unsigned long step )
{
mbedtls_test_info.step = step;
}
void mbedtls_test_info_reset( void )
{
mbedtls_test_info.result = MBEDTLS_TEST_RESULT_SUCCESS;
mbedtls_test_info.step = (unsigned long)( -1 );
mbedtls_test_info.test = 0;
mbedtls_test_info.line_no = 0;
mbedtls_test_info.filename = 0;
}
int mbedtls_test_unhexify( unsigned char *obuf,
size_t obufmax,
const char *ibuf,
size_t *len )
{
unsigned char uc, uc2;
*len = strlen( ibuf );
/* Must be even number of bytes. */
if ( ( *len ) & 1 )
return( -1 );
*len /= 2;
if ( (*len) > obufmax )
return( -1 );
while( *ibuf != 0 )
{
if ( ascii2uc( *(ibuf++), &uc ) != 0 )
return( -1 );
if ( ascii2uc( *(ibuf++), &uc2 ) != 0 )
return( -1 );
*(obuf++) = ( uc << 4 ) | uc2;
}
return( 0 );
}
void mbedtls_test_hexify( unsigned char *obuf,
const unsigned char *ibuf,
int len )
{
unsigned char l, h;
while( len != 0 )
{
h = *ibuf / 16;
l = *ibuf % 16;
if( h < 10 )
*obuf++ = '0' + h;
else
*obuf++ = 'a' + h - 10;
if( l < 10 )
*obuf++ = '0' + l;
else
*obuf++ = 'a' + l - 10;
++ibuf;
len--;
}
}
unsigned char *mbedtls_test_zero_alloc( size_t len )
{
void *p;
size_t actual_len = ( len != 0 ) ? len : 1;
p = mbedtls_calloc( 1, actual_len );
TEST_HELPER_ASSERT( p != NULL );
memset( p, 0x00, actual_len );
return( p );
}
unsigned char *mbedtls_test_unhexify_alloc( const char *ibuf, size_t *olen )
{
unsigned char *obuf;
size_t len;
*olen = strlen( ibuf ) / 2;
if( *olen == 0 )
return( mbedtls_test_zero_alloc( *olen ) );
obuf = mbedtls_calloc( 1, *olen );
TEST_HELPER_ASSERT( obuf != NULL );
TEST_HELPER_ASSERT( mbedtls_test_unhexify( obuf, *olen, ibuf, &len ) == 0 );
return( obuf );
}
int mbedtls_test_hexcmp( uint8_t * a, uint8_t * b,
uint32_t a_len, uint32_t b_len )
{
int ret = 0;
uint32_t i = 0;
if( a_len != b_len )
return( -1 );
for( i = 0; i < a_len; i++ )
{
if( a[i] != b[i] )
{
ret = -1;
break;
}
}
return ret;
}
#if defined(MBEDTLS_CHECK_PARAMS)
void mbedtls_test_param_failed_get_location_record(
mbedtls_test_param_failed_location_record_t *location_record )
{
*location_record = param_failed_ctx.location_record;
}
void mbedtls_test_param_failed_expect_call( void )
{
param_failed_ctx.expected_call_happened = 0;
param_failed_ctx.expected_call = 1;
}
int mbedtls_test_param_failed_check_expected_call( void )
{
param_failed_ctx.expected_call = 0;
if( param_failed_ctx.expected_call_happened != 0 )
return( 0 );
return( -1 );
}
void* mbedtls_test_param_failed_get_state_buf( void )
{
return &param_failed_ctx.state;
}
void mbedtls_test_param_failed_reset_state( void )
{
memset( param_failed_ctx.state, 0, sizeof( param_failed_ctx.state ) );
}
void mbedtls_param_failed( const char *failure_condition,
const char *file,
int line )
{
/* Record the location of the failure */
param_failed_ctx.location_record.failure_condition = failure_condition;
param_failed_ctx.location_record.file = file;
param_failed_ctx.location_record.line = line;
/* If we are testing the callback function... */
if( param_failed_ctx.expected_call != 0 )
{
param_failed_ctx.expected_call = 0;
param_failed_ctx.expected_call_happened = 1;
}
else
{
/* ...else try a long jump. If the execution state has not been set-up
* or reset then the long jump buffer is all zero's and the call will
* with high probability fault, emphasizing there is something to look
* at.
*/
longjmp( param_failed_ctx.state, 1 );
}
}
#endif /* MBEDTLS_CHECK_PARAMS */
#if defined(MBEDTLS_TEST_HOOKS)
void mbedtls_test_err_add_check( int high, int low,
const char *file, int line )
{
/* Error codes are always negative (a value of zero is a success) however
* their positive opposites can be easier to understand. The following
* examples given in comments have been made positive for ease of
* understanding. The structure of an error code is such:
*
* shhhhhhhhlllllll
*
* s = sign bit.
* h = high level error code (includes high level module ID (bits 12..14)
* and module-dependent error code (bits 7..11)).
* l = low level error code.
*/
if ( high > -0x1000 && high != 0 )
/* high < 0001000000000000
* No high level module ID bits are set.
*/
{
mbedtls_test_fail( "'high' is not a high-level error code",
line, file );
}
else if ( high < -0x7F80 )
/* high > 0111111110000000
* Error code is greater than the largest allowed high level module ID.
*/
{
mbedtls_test_fail( "'high' error code is greater than 15 bits",
line, file );
}
else if ( ( high & 0x7F ) != 0 )
/* high & 0000000001111111
* Error code contains low level error code bits.
*/
{
mbedtls_test_fail( "'high' contains a low-level error code",
line, file );
}
else if ( low < -0x007F )
/* low > 0000000001111111
* Error code contains high or module level error code bits.
*/
{
mbedtls_test_fail( "'low' error code is greater than 7 bits",
line, file );
}
else if ( low > 0 )
{
mbedtls_test_fail( "'low' error code is greater than zero",
line, file );
}
}
#endif /* MBEDTLS_TEST_HOOKS */