1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/***************************************************************************
* 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) {
QString err = Py::value(e).as_string().c_str();
e.clear();
throw Kross::Api::Exception::Ptr( new Kross::Api::Exception(QString("Failed to initialize PythonSecurity module: %1").arg(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 QString& source, const QString& filename, const QString& 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(QString("No such function '%1'.").arg("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(QString("Function '%1' is not callable.").arg("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( QString("dir() = %1").arg( ml[mi].str().as_string().c_str() ) );
//krossdebug( QString("dir().dir() = %1").arg( Py::Object(ml[mi]).dir().as_string().c_str() ) );
}
*/
Py::Object code(pycode);
krossdebug( QString("%1 callable=%2").arg(code.as_string().c_str()).arg(PyCallable_Check(code.ptr())) );
Py::List l = code.dir();
for(Py::List::size_type i = 0; i < l.length(); ++i) {
krossdebug( QString("dir() = %1").arg( l[i].str().as_string().c_str() ) );
//krossdebug( QString("dir().dir() = %1").arg( Py::Object(l[i]).dir().as_string().c_str() ) );
}
return pycode;
}
catch(Py::Exception& e) {
QString err = Py::value(e).as_string().c_str();
e.clear();
throw Kross::Api::Exception::Ptr( new Kross::Api::Exception(QString("Function '%1' failed with python exception: %2").arg("compile_restricted").arg(err) ) );
}
}
#if 0
void PythonSecurity::compile_restricted_function(const Py::Tuple& /*args*/, const QString& /*body*/, const QString& /*name*/, const QString& /*filename*/, const Py::Object& /*globalize*/)
{
//TODO
}
void PythonSecurity::compile_restricted_exec(const QString& /*source*/, const QString& /*filename*/)
{
//TODO
}
void PythonSecurity::compile_restricted_eval(const QString& /*source*/, const QString& /*filename*/)
{
//TODO
}
#endif
|
