C++ (Cpp) pyewf_integer_signed_copy_to_64bit Beispiele

Beispiel #1

Datei: pyewf_file_object_io_handle.c Projekt: zhangway100/libewf

/* Retrieves the current offset within the file object
 * Make sure to hold the GIL state before calling this function
 * Returns 1 if successful or -1 on error
 */
int pyewf_file_object_get_offset(
     PyObject *file_object,
     off64_t *offset,
     libcerror_error_t **error )
{
	PyObject *method_name   = NULL;
	PyObject *method_result = NULL;
	static char *function   = "pyewf_file_object_get_offset";
	int result              = 0;

	if( file_object == NULL )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
		 LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
		 "%s: invalid file object.",
		 function );

		return( -1 );
	}
	if( offset == NULL )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
		 LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
		 "%s: invalid offset.",
		 function );

		return( -1 );
	}
#if PY_MAJOR_VERSION >= 3
	method_name = PyUnicode_FromString(
	               "get_offset" );
#else
	method_name = PyString_FromString(
	               "get_offset" );
#endif
	PyErr_Clear();

	/* Determine if the file object has the get_offset method
	 */
	result = PyObject_HasAttr(
	          file_object,
	          method_name );

	if( result == 0 )
	{
		Py_DecRef(
		 method_name );

		/* Fall back to the tell method
		 */
#if PY_MAJOR_VERSION >= 3
		method_name = PyUnicode_FromString(
		               "tell" );
#else
		method_name = PyString_FromString(
		               "tell" );
#endif
	}
	PyErr_Clear();

	method_result = PyObject_CallMethodObjArgs(
	                 file_object,
	                 method_name,
	                 NULL );

	if( PyErr_Occurred() )
	{
		pyewf_error_fetch(
		 error,
		 LIBCERROR_ERROR_DOMAIN_RUNTIME,
		 LIBCERROR_RUNTIME_ERROR_GET_FAILED,
		 "%s: unable to retrieve current offset in file object.",
		 function );

		goto on_error;
	}
	if( method_result == NULL )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_RUNTIME,
		 LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
		 "%s: missing method result.",
		 function );

		goto on_error;
	}
	if( pyewf_integer_signed_copy_to_64bit(
	     method_result,
	     offset,
	     error ) != 1 )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_RUNTIME,
		 LIBCERROR_RUNTIME_ERROR_GET_FAILED,
		 "%s: unable to convert method result into current offset of file object.",
		 function );

		goto on_error;
	}
	Py_DecRef(
	 method_result );

	Py_DecRef(
	 method_name );

	return( 1 );

on_error:
	if( method_result != NULL )
	{
		Py_DecRef(
		 method_result );
	}
	if( method_name != NULL )
	{
		Py_DecRef(
		 method_name );
	}
	return( -1 );
}

Beispiel #2

Datei: pyewf_file_object_io_handle.c Projekt: ArchAssault-Project/libewf

/* Retrieves the current offset within the file object
 * Make sure to hold the GIL state before calling this function
 * Returns 1 if successful or -1 on error
 */
int pyewf_file_object_get_offset(
     PyObject *file_object,
     off64_t *offset,
     libcerror_error_t **error )
{
	PyObject *exception_string    = NULL;
	PyObject *exception_traceback = NULL;
	PyObject *exception_type      = NULL;
	PyObject *exception_value     = NULL;
	PyObject *method_name         = NULL;
	PyObject *method_result       = NULL;
	char *error_string            = NULL;
	static char *function         = "pyewf_file_object_get_offset";
	int result                    = 0;

	if( file_object == NULL )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
		 LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
		 "%s: invalid file object.",
		 function );

		return( -1 );
	}
	if( offset == NULL )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
		 LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
		 "%s: invalid offset.",
		 function );

		return( -1 );
	}
	method_name = PyString_FromString(
	               "get_offset" );

	PyErr_Clear();

	/* Determine if the file object has the get_offset method
	 */
	result = PyObject_HasAttr(
	          file_object,
	          method_name );

	if( result == 0 )
	{
		Py_DecRef(
		 method_name );

		/* Fall back to the tell method
		 */
		method_name = PyString_FromString(
		               "tell" );
	}
	PyErr_Clear();

	method_result = PyObject_CallMethodObjArgs(
	                 file_object,
	                 method_name,
	                 NULL );

	if( PyErr_Occurred() )
	{
		PyErr_Fetch(
		 &exception_type,
		 &exception_value,
		 &exception_traceback );

		exception_string = PyObject_Repr(
		                    exception_value );

		error_string = PyString_AsString(
		                exception_string );

		if( error_string != NULL )
		{
			libcerror_error_set(
			 error,
			 LIBCERROR_ERROR_DOMAIN_RUNTIME,
			 LIBCERROR_RUNTIME_ERROR_GET_FAILED,
			 "%s: unable to retrieve current offset in file object with error: %s.",
			 function,
			 error_string );
		}
		else
		{
			libcerror_error_set(
			 error,
			 LIBCERROR_ERROR_DOMAIN_RUNTIME,
			 LIBCERROR_RUNTIME_ERROR_GET_FAILED,
			 "%s: unable to retrieve current offset in file object.",
			 function );
		}
		Py_DecRef(
		 exception_string );

		goto on_error;
	}
	if( pyewf_integer_signed_copy_to_64bit(
	     method_result,
	     offset,
	     error ) != 1 )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_RUNTIME,
		 LIBCERROR_RUNTIME_ERROR_GET_FAILED,
		 "%s: unable to convert method result into current offset of file object.",
		 function );

		goto on_error;
	}
	Py_DecRef(
	 method_result );

	Py_DecRef(
	 method_name );

	return( 1 );

on_error:
	if( method_result != NULL )
	{
		Py_DecRef(
		 method_result );
	}
	if( method_name != NULL )
	{
		Py_DecRef(
		 method_name );
	}
	return( -1 );
}