/* * Integer functions * * Copyright (C) 2010-2019, Joachim Metz * * Refer to AUTHORS for acknowledgements. * * This software 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 software 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 software. If not, see . */ #include #include #include "pyfsntfs_error.h" #include "pyfsntfs_libcerror.h" #include "pyfsntfs_integer.h" #include "pyfsntfs_python.h" /* Creates a new signed integer object from a 64-bit value * Returns a Python object if successful or NULL on error */ PyObject *pyfsntfs_integer_signed_new_from_64bit( int64_t value_64bit ) { PyObject *integer_object = NULL; static char *function = "pyfsntfs_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 *pyfsntfs_integer_unsigned_new_from_64bit( uint64_t value_64bit ) { PyObject *integer_object = NULL; static char *function = "pyfsntfs_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 pyfsntfs_integer_signed_copy_to_64bit( PyObject *integer_object, int64_t *value_64bit, libcerror_error_t **error ) { static char *function = "pyfsntfs_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 ) { pyfsntfs_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 ) { pyfsntfs_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() ) { pyfsntfs_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 pyfsntfs_integer_unsigned_copy_to_64bit( PyObject *integer_object, uint64_t *value_64bit, libcerror_error_t **error ) { static char *function = "pyfsntfs_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 ) { pyfsntfs_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 ) { pyfsntfs_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() ) { pyfsntfs_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 ); }