mirror of
https://github.com/libyal/libexe
synced 2026-06-08 15:29:55 +00:00
Joachim Metz
400 lines
8.6 KiB
C
400 lines
8.6 KiB
C
/*
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* Integer functions
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*
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* Copyright (C) 2011-2026, Joachim Metz <joachim.metz@gmail.com>
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*
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* Refer to AUTHORS for acknowledgements.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <common.h>
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#include <types.h>
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#include "pyexe_error.h"
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#include "pyexe_libcerror.h"
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#include "pyexe_integer.h"
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#include "pyexe_python.h"
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/* Creates a new signed integer object from a 64-bit value
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* Returns a Python object if successful or NULL on error
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*/
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PyObject *pyexe_integer_signed_new_from_64bit(
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int64_t value_64bit )
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{
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PyObject *integer_object = NULL;
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static char *function = "pyexe_integer_signed_new_from_64bit";
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#if defined( HAVE_LONG_LONG )
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if( ( value_64bit < (int64_t) LLONG_MIN )
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|| ( value_64bit > (int64_t) LLONG_MAX ) )
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{
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PyErr_Format(
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PyExc_OverflowError,
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"%s: 64-bit value out of bounds.",
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function );
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return( NULL );
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}
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integer_object = PyLong_FromLongLong(
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(long long) value_64bit );
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#else
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if( current_offset > (off64_t) LONG_MAX )
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{
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PyErr_Format(
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PyExc_OverflowError,
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"%s: 64-bit value out of bounds.",
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function );
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return( NULL );
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}
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integer_object = PyLong_FromLong(
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(long) value_64bit );
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#endif
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return( integer_object );
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}
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/* Creates a new unsigned integer object from a 64-bit value
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* Returns a Python object if successful or NULL on error
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*/
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PyObject *pyexe_integer_unsigned_new_from_64bit(
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uint64_t value_64bit )
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{
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PyObject *integer_object = NULL;
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static char *function = "pyexe_integer_unsigned_new_from_64bit";
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#if defined( HAVE_LONG_LONG )
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if( value_64bit > (uint64_t) ULLONG_MAX )
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{
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PyErr_Format(
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PyExc_OverflowError,
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"%s: 64-bit value exceeds maximum.",
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function );
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return( NULL );
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}
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integer_object = PyLong_FromUnsignedLongLong(
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(long long) value_64bit );
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#else
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if( value_64bit > (uint64_t) ULONG_MAX )
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{
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PyErr_Format(
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PyExc_OverflowError,
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"%s: 64-bit value exceeds maximum.",
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function );
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return( NULL );
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}
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integer_object = PyLong_FromUnsignedLong(
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(long) value_64bit );
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#endif
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return( integer_object );
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}
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/* Copies a Python int or long object to a signed 64-bit value
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* Returns 1 if successful or -1 on error
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*/
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int pyexe_integer_signed_copy_to_64bit(
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PyObject *integer_object,
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int64_t *value_64bit,
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libcerror_error_t **error )
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{
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static char *function = "pyexe_integer_signed_copy_to_64bit";
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int result = 0;
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#if defined( HAVE_LONG_LONG )
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PY_LONG_LONG long_value = 0;
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#else
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long long_value = 0;
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#endif
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if( integer_object == NULL )
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{
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libcerror_error_set(
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error,
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LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
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LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
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"%s: invalid integer object.",
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function );
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return( -1 );
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}
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PyErr_Clear();
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result = PyObject_IsInstance(
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integer_object,
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(PyObject *) &PyLong_Type );
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if( result == -1 )
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{
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pyexe_error_fetch(
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error,
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LIBCERROR_ERROR_DOMAIN_RUNTIME,
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LIBCERROR_RUNTIME_ERROR_GET_FAILED,
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"%s: unable to determine if integer object is of type long.",
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function );
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return( -1 );
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}
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else if( result != 0 )
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{
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PyErr_Clear();
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#if defined( HAVE_LONG_LONG )
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long_value = PyLong_AsLongLong(
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integer_object );
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#else
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long_value = PyLong_AsLong(
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integer_object );
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#endif
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}
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#if PY_MAJOR_VERSION < 3
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if( result == 0 )
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{
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PyErr_Clear();
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result = PyObject_IsInstance(
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integer_object,
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(PyObject *) &PyInt_Type );
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if( result == -1 )
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{
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pyexe_error_fetch(
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error,
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LIBCERROR_ERROR_DOMAIN_RUNTIME,
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LIBCERROR_RUNTIME_ERROR_GET_FAILED,
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"%s: unable to determine if integer object is of type int.",
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function );
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return( -1 );
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}
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else if( result != 0 )
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{
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PyErr_Clear();
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long_value = PyInt_AsLong(
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integer_object );
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}
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}
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#endif /* PY_MAJOR_VERSION < 3 */
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if( result == 0 )
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{
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libcerror_error_set(
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error,
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LIBCERROR_ERROR_DOMAIN_RUNTIME,
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LIBCERROR_RUNTIME_ERROR_GET_FAILED,
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"%s: unsupported integer object type.",
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function );
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return( -1 );
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}
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if( PyErr_Occurred() )
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{
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pyexe_error_fetch(
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error,
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LIBCERROR_ERROR_DOMAIN_RUNTIME,
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LIBCERROR_RUNTIME_ERROR_GET_FAILED,
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"%s: unable to convert integer object to long.",
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function );
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return( -1 );
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}
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#if defined( HAVE_LONG_LONG ) && ( SIZEOF_LONG_LONG > 8 )
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if( ( long_value < (PY_LONG_LONG) INT64_MIN )
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|| ( long_value > (PY_LONG_LONG) INT64_MAX ) )
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{
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libcerror_error_set(
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error,
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LIBCERROR_ERROR_DOMAIN_RUNTIME,
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LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
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"%s: invalid long value out of bounds.",
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function );
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return( -1 );
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}
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#elif ( SIZEOF_LONG > 8 )
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if( ( long_value > (long) INT64_MIN )
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|| ( long_value > (long) INT64_MAX ) )
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{
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libcerror_error_set(
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error,
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LIBCERROR_ERROR_DOMAIN_RUNTIME,
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LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
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"%s: invalid long value out of bounds.",
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function );
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return( -1 );
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}
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#endif
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*value_64bit = (int64_t) long_value;
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return( 1 );
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}
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/* Copies a Python int or long object to an unsigned 64-bit value
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* Returns 1 if successful or -1 on error
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*/
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int pyexe_integer_unsigned_copy_to_64bit(
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PyObject *integer_object,
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uint64_t *value_64bit,
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libcerror_error_t **error )
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{
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static char *function = "pyexe_integer_unsigned_copy_to_64bit";
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int result = 0;
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#if defined( HAVE_LONG_LONG )
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PY_LONG_LONG long_value = 0;
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#else
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long long_value = 0;
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#endif
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if( integer_object == NULL )
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{
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libcerror_error_set(
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error,
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LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
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LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
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"%s: invalid integer object.",
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function );
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return( -1 );
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}
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PyErr_Clear();
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result = PyObject_IsInstance(
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integer_object,
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(PyObject *) &PyLong_Type );
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if( result == -1 )
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{
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pyexe_error_fetch(
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error,
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LIBCERROR_ERROR_DOMAIN_RUNTIME,
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LIBCERROR_RUNTIME_ERROR_GET_FAILED,
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"%s: unable to determine if integer object is of type long.",
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function );
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return( -1 );
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}
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else if( result != 0 )
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{
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PyErr_Clear();
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#if defined( HAVE_LONG_LONG )
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long_value = PyLong_AsUnsignedLongLong(
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integer_object );
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#else
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long_value = PyLong_AsUnsignedLong(
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integer_object );
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#endif
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}
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#if PY_MAJOR_VERSION < 3
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if( result == 0 )
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{
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PyErr_Clear();
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result = PyObject_IsInstance(
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integer_object,
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(PyObject *) &PyInt_Type );
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if( result == -1 )
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{
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pyexe_error_fetch(
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error,
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LIBCERROR_ERROR_DOMAIN_RUNTIME,
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LIBCERROR_RUNTIME_ERROR_GET_FAILED,
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"%s: unable to determine if integer object is of type int.",
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function );
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return( -1 );
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}
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else if( result != 0 )
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{
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PyErr_Clear();
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#if defined( HAVE_LONG_LONG )
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long_value = PyInt_AsUnsignedLongLongMask(
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integer_object );
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#else
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long_value = PyInt_AsUnsignedLongMask(
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integer_object );
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#endif
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}
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}
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#endif /* PY_MAJOR_VERSION < 3 */
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if( result == 0 )
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{
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libcerror_error_set(
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error,
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LIBCERROR_ERROR_DOMAIN_RUNTIME,
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LIBCERROR_RUNTIME_ERROR_GET_FAILED,
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"%s: unsupported integer object type.",
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function );
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return( -1 );
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}
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if( PyErr_Occurred() )
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{
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pyexe_error_fetch(
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error,
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LIBCERROR_ERROR_DOMAIN_RUNTIME,
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LIBCERROR_RUNTIME_ERROR_GET_FAILED,
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"%s: unable to convert integer object to long.",
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function );
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return( -1 );
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}
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#if defined( HAVE_LONG_LONG )
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#if ( SIZEOF_LONG_LONG > 8 )
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if( ( long_value < (PY_LONG_LONG) 0 )
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|| ( long_value > (PY_LONG_LONG) UINT64_MAX ) )
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#else
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if( long_value < (PY_LONG_LONG) 0 )
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#endif
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{
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libcerror_error_set(
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error,
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LIBCERROR_ERROR_DOMAIN_RUNTIME,
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LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
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"%s: invalid long value out of bounds.",
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function );
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return( -1 );
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}
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#else
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#if ( SIZEOF_LONG > 8 )
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if( ( long_value < (long) 0 )
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|| ( long_value > (long) UINT64_MAX ) )
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#else
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if( long_value < (PY_LONG_LONG) 0 )
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#endif
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{
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libcerror_error_set(
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error,
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LIBCERROR_ERROR_DOMAIN_RUNTIME,
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LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
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"%s: invalid long value out of bounds.",
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function );
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return( -1 );
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}
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#endif
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*value_64bit = (uint64_t) long_value;
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return( 1 );
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}
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