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/***************************************************************************
* pythonsecurity.cpp
* This file is part of the KDE project
* copyright (C)2004-2005 by Sebastian Sauer (mail@dipe.org)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
* You should have received a copy of the GNU Library General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
***************************************************************************/
#include "pythonsecurity.h"
#include "pythoninterpreter.h"
#include "pythonmodule.h"
using namespace Kross::Python;
PythonSecurity::PythonSecurity(PythonInterpreter* interpreter)
: Py::ExtensionModule<PythonSecurity>("PythonSecurity")
, m_interpreter(interpreter)
, m_pymodule(0)
{
add_varargs_method("_getattr_", &PythonSecurity::_getattr_, "Secure wapper around the getattr method.");
initialize("The PythonSecurity module used to wrap the RestrictedPython functionality.");
/* TESTCASE
initRestrictedPython();
compile_restricted(
"a = 2 + 5\n"
"import os\n"
"import sys\n"
"b = sys.path\n"
"print \"######### >>>testcase<<< #########\" \n"
,
"mytestcase", // filename
"exec" // 'exec' or 'eval' or 'single'
);
*/
}
PythonSecurity::~PythonSecurity()
{
delete m_pymodule;
}
void PythonSecurity::initRestrictedPython()
{
try {
Py::Dict mainmoduledict = ((PythonInterpreter*)m_interpreter)->mainModule()->getDict();
PyObject* pymodule = PyImport_ImportModuleEx(
"RestrictedPython", // name of the module being imported (may be a dotted name)
mainmoduledict.ptr(), // reference to the current global namespace
mainmoduledict.ptr(), // reference to the local namespace
0 // PyObject *fromlist
);
if(! pymodule)
throw Py::Exception();
m_pymodule = new Py::Module(pymodule, true);
PyObject* pyrun = PyRun_String(
//"import os\n"
//"import sys\n"
"import __main__\n"
"import PythonSecurity\n"
"from RestrictedPython import compile_restricted, PrintCollector\n"
"from RestrictedPython.Eval import RestrictionCapableEval\n"
"from RestrictedPython.RCompile import RModule\n"
"setattr(__main__, '_getattr_', PythonSecurity._getattr_)\n"
"setattr(__main__, '_print_', PrintCollector)\n"
,
Py_file_input,
m_pymodule->getDict().ptr(),
m_pymodule->getDict().ptr()
);
if(! pyrun)
throw Py::Exception();
krossdebug("PythonSecurity::PythonSecurity SUCCESSFULLY LOADED");
}
catch(Py::Exception& e) {
TQString err = Py::value(e).as_string().c_str();
e.clear();
throw Kross::Api::Exception::Ptr( new Kross::Api::Exception(TQString("Failed to initialize PythonSecurity module: %1").tqarg(err) ) );
}
}
Py::Object PythonSecurity::_getattr_(const Py::Tuple& args)
{
krossdebug("PythonSecurity::_getattr_");
for(uint i = 0; i < args.size(); i++) {
Py::Object o = args[i];
krossdebug( o.as_string().c_str() );
}
return Py::None();
}
PyObject* PythonSecurity::compile_restricted(const TQString& source, const TQString& filename, const TQString& mode)
{
krossdebug("PythonSecurity::compile_restricted");
if(! m_pymodule)
initRestrictedPython(); // throws exception if failed
try {
Py::Dict mainmoduledict = ((PythonInterpreter*)m_interpreter)->mainModule()->getDict();
PyObject* func = PyDict_GetItemString(m_pymodule->getDict().ptr(), "compile_restricted");
if(! func)
throw Kross::Api::Exception::Ptr( new Kross::Api::Exception(TQString("No such function '%1'.").tqarg("compile_restricted")) );
Py::Callable funcobject(func, true); // the funcobject takes care of freeing our func pyobject.
if(! funcobject.isCallable())
throw Kross::Api::Exception::Ptr( new Kross::Api::Exception(TQString("Function '%1' is not callable.").tqarg("compile_restricted")) );
Py::Tuple args(3);
args[0] = Py::String(source.utf8());
args[1] = Py::String(filename.utf8());
args[2] = Py::String(mode.utf8());
Py::Object result = funcobject.apply(args);
PyObject* pycode = PyEval_EvalCode(
(PyCodeObject*)result.ptr(),
mainmoduledict.ptr(),
mainmoduledict.ptr()
);
if(! pycode)
throw Py::Exception();
/*
Py::List ml = mainmoduledict;
for(Py::List::size_type mi = 0; mi < ml.length(); ++mi) {
krossdebug( TQString("dir() = %1").tqarg( ml[mi].str().as_string().c_str() ) );
//krossdebug( TQString("dir().dir() = %1").tqarg( Py::Object(ml[mi]).dir().as_string().c_str() ) );
}
*/
Py::Object code(pycode);
krossdebug( TQString("%1 callable=%2").tqarg(code.as_string().c_str()).tqarg(PyCallable_Check(code.ptr())) );
Py::List l = code.dir();
for(Py::List::size_type i = 0; i < l.length(); ++i) {
krossdebug( TQString("dir() = %1").tqarg( l[i].str().as_string().c_str() ) );
//krossdebug( TQString("dir().dir() = %1").tqarg( Py::Object(l[i]).dir().as_string().c_str() ) );
}
return pycode;
}
catch(Py::Exception& e) {
TQString err = Py::value(e).as_string().c_str();
e.clear();
throw Kross::Api::Exception::Ptr( new Kross::Api::Exception(TQString("Function '%1' failed with python exception: %2").tqarg("compile_restricted").tqarg(err) ) );
}
}
#if 0
void PythonSecurity::compile_restricted_function(const Py::Tuple& /*args*/, const TQString& /*body*/, const TQString& /*name*/, const TQString& /*filename*/, const Py::Object& /*globalize*/)
{
//TODO
}
void PythonSecurity::compile_restricted_exec(const TQString& /*source*/, const TQString& /*filename*/)
{
//TODO
}
void PythonSecurity::compile_restricted_eval(const TQString& /*source*/, const TQString& /*filename*/)
{
//TODO
}
#endif
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