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Skip param validation tests if custom macro used

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The test framework for validation of parameters depends on the macro
MBEDTLS_PARAM_FAILED() being set to its default value when building the
library. So far the test framework attempted to define this macro but this was
the wrong place - this definition wouldn't be picked by the library.

Instead, a different approach is taken: skip those tests when the macro is
defined in config.h, as in that case we have no way to know if it will indeed
end up calling mbedtls_param_failed() as we need it to.

This commit was tested by manually ensuring that aes_invalid_params:

- passes (and is not skipped) in the default configuration
- is skipped when MBEDTLS_PARAM_FAILED() is defined in config.h
This commit is contained in:
Manuel Pégourié-Gonnard 2018-12-10 15:23:58 +01:00
parent 3ef6a6dc5c
commit a2b0e27378
4 changed files with 24 additions and 31 deletions
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14
include/mbedtls/platform_util.h
View File

@ -41,7 +41,16 @@
extern "C" {
#endif
#if defined( MBEDTLS_CHECK_PARAMS ) && !defined(MBEDTLS_PARAM_FAILED)
#if defined( MBEDTLS_CHECK_PARAMS )
#if defined(MBEDTLS_PARAM_FAILED)
/** An alternative definition of MBEDTLS_PARAM_FAILED has been set in config.h.
*
* This flag can be used to check whether it is safe to assume that
* MBEDTLS_PARAM_FAILED() will expand to a call to mbedtls_param_failed().
*/
#define MBEDTLS_PARAM_FAILED_ALT
#else
#define MBEDTLS_PARAM_FAILED( cond ) \
mbedtls_param_failed( cond, __FILE__, __LINE__ )
@ -67,7 +76,8 @@ extern "C" {
void mbedtls_param_failed( const char* failure_condition,
const char* file,
int line );
#endif /* MBEDTLS_CHECK_PARAMS && !MBEDTLS_PARAM_FAILED */
#endif /* MBEDTLS_PARAM_FAILED */
#endif /* MBEDTLS_CHECK_PARAMS */
/**
* \brief Securely zeroize a buffer

38
tests/suites/helpers.function
View File

@ -24,10 +24,9 @@
#endif
#if defined(MBEDTLS_CHECK_PARAMS)
#include "mbedtls/platform_util.h"
#include <setjmp.h>
#define MBEDTLS_PARAM_FAILED(x) mbedtls_param_failed( #x, __FILE__, __LINE__ )
#endif /* MBEDTLS_CHECK_PARAMS */
#endif
#ifdef _MSC_VER
#include <basetsd.h>
@ -92,7 +91,8 @@ typedef enum
* code that can be tested.
*
* When MBEDTLS_CHECK_PARAMS is enabled, calls to the parameter failure
* callback, MBEDTLS_PARAM_FAIL, will be assumed to be a test failure.
* callback, MBEDTLS_PARAM_FAILED(), will be assumed to be a test
* failure.
*
* This macro is not suitable for negative parameter validation tests,
* as it assumes the test step will not create an error.
@ -109,7 +109,7 @@ typedef enum
} \
} while( 0 )
#if defined(MBEDTLS_CHECK_PARAMS)
#if defined(MBEDTLS_CHECK_PARAMS) && !defined(MBEDTLS_PARAM_FAILED_ALT)
/**
* \brief This macro tests the statement passed to it as a test step or
* individual test in a test case. The macro assumes the test will fail
@ -119,12 +119,12 @@ typedef enum
* code on return to confirm the given error code was returned.
*
* When MBEDTLS_CHECK_PARAMS is enabled, calls to the parameter failure
* callback, MBEDTLS_PARAM_FAIL, are assumed to indicate the
* callback, MBEDTLS_PARAM_FAILED(), are assumed to indicate the
* expected failure, and the test will pass.
*
* This macro is intended for negative parameter validation tests,
* where the failing function may return an error value or call
* MBEDTLS_PARAM_FAIL to indicate the error.
* MBEDTLS_PARAM_FAILED() to indicate the error.
*
* \param PARAM_ERROR_VALUE The expected error code.
*
@ -148,16 +148,16 @@ typedef enum
*
* It assumes the library function under test cannot return a value and
* assumes errors can only be indicated byt calls to
* MBEDTLS_PARAM_FAIL.
* MBEDTLS_PARAM_FAILED().
*
* When MBEDTLS_CHECK_PARAMS is enabled, calls to the parameter failure
* callback, MBEDTLS_PARAM_FAIL, are assumed to indicate the
* callback, MBEDTLS_PARAM_FAILED(), are assumed to indicate the
* expected failure. If MBEDTLS_CHECK_PARAMS is not enabled, no test
* can be made.
*
* This macro is intended for negative parameter validation tests,
* where the failing function can only return an error by calling
* MBEDTLS_PARAM_FAIL to indicate the error.
* MBEDTLS_PARAM_FAILED() to indicate the error.
*
* \param TEST The test expression to be tested.
*/
@ -173,23 +173,7 @@ typedef enum
memcpy(param_fail_jmp, jmp_tmp, sizeof(jmp_buf)); \
} while( 0 )
#else
#define TEST_INVALID_PARAM_RET( PARAM_ERR_VALUE, TEST ) \
do { \
if( (TEST) != (PARAM_ERR_VALUE) ) \
{ \
test_fail( #TEST, __LINE__, __FILE__ ); \
goto exit; \
} \
} while( 0 )
#define TEST_INVALID_PARAM( TEST ) \
do { \
TEST; \
} while( 0 )
#endif /* !defined( MBEDTLS_CHECK_PARAMS ) */
#endif /* MBEDTLS_CHECK_PARAMS && !MBEDTLS_PARAM_FAILED_ALT */
#define assert(a) if( !( a ) ) \
{ \

2
tests/suites/test_suite_aes.function
View File

@ -371,7 +371,7 @@ exit:
}
/* END_CASE */
/* BEGIN_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_CHECK_PARAMS:!MBEDTLS_PARAM_FAILED_ALT */
void aes_invalid_param( )
{
mbedtls_aes_context dummy_ctx;

1
tests/suites/test_suite_aes.rest.data
View File

@ -11,7 +11,6 @@ AES-256-CBC Decrypt (Invalid input length)
aes_decrypt_cbc:"0000000000000000000000000000000000000000000000000000000000000000":"00000000000000000000000000000000":"623a52fcea5d443e48d9181ab32c74":"":MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH
AES - Invalid parameters
depends_on:MBEDTLS_CHECK_PARAMS
aes_invalid_param:
AES Selftest