File: //home/django/libpff/pypff/pypff_integer.c
/*
* Integer functions
*
* Copyright (C) 2008-2024, Joachim Metz <joachim.metz@gmail.com>
*
* Refer to AUTHORS for acknowledgements.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <common.h>
#include <types.h>
#include "pypff_error.h"
#include "pypff_libcerror.h"
#include "pypff_integer.h"
#include "pypff_python.h"
/* Creates a new signed integer object from a 64-bit value
* Returns a Python object if successful or NULL on error
*/
PyObject *pypff_integer_signed_new_from_64bit(
int64_t value_64bit )
{
PyObject *integer_object = NULL;
static char *function = "pypff_integer_signed_new_from_64bit";
#if defined( HAVE_LONG_LONG )
if( ( value_64bit < (int64_t) LLONG_MIN )
|| ( value_64bit > (int64_t) LLONG_MAX ) )
{
PyErr_Format(
PyExc_OverflowError,
"%s: 64-bit value out of bounds.",
function );
return( NULL );
}
integer_object = PyLong_FromLongLong(
(long long) value_64bit );
#else
if( current_offset > (off64_t) LONG_MAX )
{
PyErr_Format(
PyExc_OverflowError,
"%s: 64-bit value out of bounds.",
function );
return( NULL );
}
integer_object = PyLong_FromLong(
(long) value_64bit );
#endif
return( integer_object );
}
/* Creates a new unsigned integer object from a 64-bit value
* Returns a Python object if successful or NULL on error
*/
PyObject *pypff_integer_unsigned_new_from_64bit(
uint64_t value_64bit )
{
PyObject *integer_object = NULL;
static char *function = "pypff_integer_unsigned_new_from_64bit";
#if defined( HAVE_LONG_LONG )
if( value_64bit > (uint64_t) ULLONG_MAX )
{
PyErr_Format(
PyExc_OverflowError,
"%s: 64-bit value exceeds maximum.",
function );
return( NULL );
}
integer_object = PyLong_FromUnsignedLongLong(
(long long) value_64bit );
#else
if( value_64bit > (uint64_t) ULONG_MAX )
{
PyErr_Format(
PyExc_OverflowError,
"%s: 64-bit value exceeds maximum.",
function );
return( NULL );
}
integer_object = PyLong_FromUnsignedLong(
(long) value_64bit );
#endif
return( integer_object );
}
/* Copies a Python int or long object to a signed 64-bit value
* Returns 1 if successful or -1 on error
*/
int pypff_integer_signed_copy_to_64bit(
PyObject *integer_object,
int64_t *value_64bit,
libcerror_error_t **error )
{
static char *function = "pypff_integer_signed_copy_to_64bit";
int result = 0;
#if defined( HAVE_LONG_LONG )
PY_LONG_LONG long_value = 0;
#else
long long_value = 0;
#endif
if( integer_object == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid integer object.",
function );
return( -1 );
}
PyErr_Clear();
result = PyObject_IsInstance(
integer_object,
(PyObject *) &PyLong_Type );
if( result == -1 )
{
pypff_error_fetch(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to determine if integer object is of type long.",
function );
return( -1 );
}
else if( result != 0 )
{
PyErr_Clear();
#if defined( HAVE_LONG_LONG )
long_value = PyLong_AsLongLong(
integer_object );
#else
long_value = PyLong_AsLong(
integer_object );
#endif
}
#if PY_MAJOR_VERSION < 3
if( result == 0 )
{
PyErr_Clear();
result = PyObject_IsInstance(
integer_object,
(PyObject *) &PyInt_Type );
if( result == -1 )
{
pypff_error_fetch(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to determine if integer object is of type int.",
function );
return( -1 );
}
else if( result != 0 )
{
PyErr_Clear();
long_value = PyInt_AsLong(
integer_object );
}
}
#endif /* PY_MAJOR_VERSION < 3 */
if( result == 0 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unsupported integer object type.",
function );
return( -1 );
}
if( PyErr_Occurred() )
{
pypff_error_fetch(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to convert integer object to long.",
function );
return( -1 );
}
#if defined( HAVE_LONG_LONG ) && ( SIZEOF_LONG_LONG > 8 )
if( ( long_value < (PY_LONG_LONG) INT64_MIN )
|| ( long_value > (PY_LONG_LONG) INT64_MAX ) )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
"%s: invalid long value out of bounds.",
function );
return( -1 );
}
#elif ( SIZEOF_LONG > 8 )
if( ( long_value > (long) INT64_MIN )
|| ( long_value > (long) INT64_MAX ) )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
"%s: invalid long value out of bounds.",
function );
return( -1 );
}
#endif
*value_64bit = (int64_t) long_value;
return( 1 );
}
/* Copies a Python int or long object to an unsigned 64-bit value
* Returns 1 if successful or -1 on error
*/
int pypff_integer_unsigned_copy_to_64bit(
PyObject *integer_object,
uint64_t *value_64bit,
libcerror_error_t **error )
{
static char *function = "pypff_integer_unsigned_copy_to_64bit";
int result = 0;
#if defined( HAVE_LONG_LONG )
PY_LONG_LONG long_value = 0;
#else
long long_value = 0;
#endif
if( integer_object == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid integer object.",
function );
return( -1 );
}
PyErr_Clear();
result = PyObject_IsInstance(
integer_object,
(PyObject *) &PyLong_Type );
if( result == -1 )
{
pypff_error_fetch(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to determine if integer object is of type long.",
function );
return( -1 );
}
else if( result != 0 )
{
PyErr_Clear();
#if defined( HAVE_LONG_LONG )
long_value = PyLong_AsUnsignedLongLong(
integer_object );
#else
long_value = PyLong_AsUnsignedLong(
integer_object );
#endif
}
#if PY_MAJOR_VERSION < 3
if( result == 0 )
{
PyErr_Clear();
result = PyObject_IsInstance(
integer_object,
(PyObject *) &PyInt_Type );
if( result == -1 )
{
pypff_error_fetch(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to determine if integer object is of type int.",
function );
return( -1 );
}
else if( result != 0 )
{
PyErr_Clear();
#if defined( HAVE_LONG_LONG )
long_value = PyInt_AsUnsignedLongLongMask(
integer_object );
#else
long_value = PyInt_AsUnsignedLongMask(
integer_object );
#endif
}
}
#endif /* PY_MAJOR_VERSION < 3 */
if( result == 0 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unsupported integer object type.",
function );
return( -1 );
}
if( PyErr_Occurred() )
{
pypff_error_fetch(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to convert integer object to long.",
function );
return( -1 );
}
#if defined( HAVE_LONG_LONG )
#if ( SIZEOF_LONG_LONG > 8 )
if( ( long_value < (PY_LONG_LONG) 0 )
|| ( long_value > (PY_LONG_LONG) UINT64_MAX ) )
#else
if( long_value < (PY_LONG_LONG) 0 )
#endif
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
"%s: invalid long value out of bounds.",
function );
return( -1 );
}
#else
#if ( SIZEOF_LONG > 8 )
if( ( long_value < (long) 0 )
|| ( long_value > (long) UINT64_MAX ) )
#else
if( long_value < (PY_LONG_LONG) 0 )
#endif
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
"%s: invalid long value out of bounds.",
function );
return( -1 );
}
#endif
*value_64bit = (uint64_t) long_value;
return( 1 );
}