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#Copyright ReportLab Europe Ltd. 2000-2017
#see license.txt for license details
"""Tests for reportlab.lib.rl_safe_eval
"""
__version__='3.5.33'
from reportlab.lib.testutils import setOutDir,makeSuiteForClasses, printLocation
setOutDir(__name__)
import os, time, sys
import reportlab
from reportlab import rl_config
import unittest
from reportlab.lib import colors
from reportlab.lib.utils import rl_safe_eval, rl_safe_exec, annotateException, rl_extended_literal_eval
from reportlab.lib.rl_safe_eval import BadCode
testObj = [1,('a','b',2),{'A':1,'B':2.0},"32"]
class TestClass:
a = 1
format = 3
testInst = TestClass()
def testFunc(bad=False):
return open('/tmp/myfile','r') if bad else testObj
class SafeEvalTestSequenceMeta(type):
def __new__(cls, name, bases, cdict):
def genTest(kind, expr,**kwds):
def test(self):
getattr(self,kind+'s')(expr,**kwds)
return test
for kind, _data in (
(
'work',
(
'[i for i in range(10)]',
'3**4',
'3*"A"',
'3+4',
'(3,4)',
'SafeEvalTestCase',
("testObj",dict(g=dict(testObj=testObj))),
"(lambda x,y:[x,y])('a',2)",
"(lambda x:[x])(2)",
"(lambda *args:[args])(2)",
"(lambda y: (lambda f:f(y))(lambda x: x+1))(2)",
"(lambda f: lambda n: (1,(1,(1,(1,f(n-1))))) if n else 1)(lambda x:x)(5)",
"((lambda f: (lambda x: x(x))(lambda y: f(lambda *args: y(y)(*args)))) (lambda f: lambda n: (1,(1,(1,(1,f(n-1))))) if n else 1)(30))",
'list(range(1000))[1:1000:100]',
'tuple(range(1000))[1:1000:100]',
'dict(a=1)["a"]',
'dict(a=1).setdefault("a",2)',
'dict(a=1).get("a",2)',
'dict(a=1).pop("a",2)',
'{"_":1+_ for _ in (1,2)}.pop(1,None)',
'1 if True else "a"',
'1 if False else "a"',
'testFunc(bad=False)',
'(min([1]),min(1,2),max([1]),max(1,2))',
'(sum((1,2,3)),sum((1,2,3),-1))',
'list(enumerate((1,2,3)))',
'list(zip((1,2,3),("a","b","c")))',
'(hasattr(testInst,"b"),hasattr(testInst,"a"))',
'list(map(lambda x: (x+13,chr(x)),(1,2,3,4)))',
'(any([1]),any([]),all([]),all([1,None]),all([1,2]))',
'(getattr(testInst,"a"),getattr(testInst,"a",12),getattr(testInst,"xxx",13))',
'list(sorted([3,4,1,2,0],reverse=True))',
'list(reversed([3,4,1,2,0]))',
'list(range(1,10,3))',
'({1,2,3},set([4,5,6]),frozenset([7,8,9]),{i for i in range(1,10,3)})',
'"%s%s" % (1,2)',
)
),
(
'fail',
(
'vars()',
'(type(1),type(str),type(testObj),type(TestClass))',
'open("/tmp/myfile")',
'SafeEvalTestCase.__module__',
("testInst.__class__.__bases__[0].__subclasses__()",dict(g=dict(testInst=testInst))),
"10**200**200",
"pow(10,200)",
'__import__("reportlab")',
('(lambda i: [i for i in ((i, 1) for j in range(1000000))][-1])(1)',dict(timeout=0.1)),
('[i for i in ((j, 1) for j in range(1000000))][-1]',dict(timeout=0.1)),
('''((lambda f: (lambda x: x(x))(lambda y: f(lambda *args: y(y)(*args)))) (lambda f: lambda n: (1,(1,(1,(1,f(n-1))))) if n else 1)(300))''',
dict(timeout=0.1,exception=RuntimeError)),
'dict(__class__=1)["__class__"]',
'dict(a=1).setdefault("__class__",2)',
'dict(a=1).get("__class__",2)',
'dict(a=1).pop("__class__",2)',
'{"__class__":1}["__class__"]',
'{"__class__":1}.setdefault("__class__",2)',
'{"__class__":1}.get("__class__",2)',
'{"__class__":1}.pop("__class__",2)',
'{"_":1 for _ in (1,2)}.pop("__class__",2)',
'type("Devil",[dict],{__init__:lambda self:self.__class__})',
'testFunc(bad=True)',
'getattr(testInst,"__class__",14)',
'"{1}{2}".format(1,2)',
'builtins',
'[ [ [ [ ftype(ctype(0, 0, 0, 0, 3, 67, b"t\\x00d\\x01\\x83\\x01\\xa0\\x01d\\x02\\xa1\\x01\\x01\\x00d\\x00S\\x00", (None, "os", "touch /tmp/exploited"), ("__import__", "system"), (), "<stdin>", "", 1, b"\\x12\\x01"), {})() for ftype in [type(lambda: None)] ] for ctype in [type(getattr(lambda: {None}, Word("__code__")))] ] for Word in [orgTypeFun("Word", (str,), { "mutated": 1, "startswith": lambda self, x: False, "__eq__": lambda self,x: self.mutate() and self.mutated < 0 and str(self) == x, "mutate": lambda self: {setattr(self, "mutated", self.mutated - 1)}, "__hash__": lambda self: hash(str(self)) })] ] for orgTypeFun in [type(type(1))]] and "red"',
)
),
):
tfmt = 'test_ExpectedTo%s_%%02d' % kind.capitalize()
for i, expr in enumerate(_data):
if expr is None:
continue #test = genTest('skip','')
else:
expr, kwds = expr if isinstance(expr,tuple) else (expr,{})
test = genTest(kind, expr,**kwds)
cdict[tfmt%i] = test
return type.__new__(cls, name, bases, cdict)
def addMeta(mcs):
def wrap(cls):
ov = cls.__dict__.copy()
sl = ov.get('__slots__')
if sl is not None:
if isinstance(sl, str):
sl = [sl]
for slv in sl:
ov.pop(slv)
ov.pop('__dict__', None)
ov.pop('__weakref__', None)
if hasattr(cls, '__qualname__'):
ov['__qualname__'] = cls.__qualname__
return mcs(cls.__name__, cls.__bases__, ov)
return wrap
@addMeta(SafeEvalTestSequenceMeta)
class SafeEvalTestCase(unittest.TestCase):
def works(self, expr, g=None, l=None):
try:
answer = eval(expr,g,l)
result = rl_safe_eval(expr,g,l)
except:
print('expr=%r' % expr)
annotateException('\nexpr=%r\n' % expr)
self.assertEqual(answer,result,"rl_safe_eval(%r) = %r not expected %r" % (expr,result,answer))
def skips(self,*args,**kwds):
raise unittest.SkipTest
def fails(self, expr, g=None, l=None, timeout=None, exception=BadCode):
try:
result = rl_safe_eval(expr,g,l,timeout=timeout)
self.assertEqual(True,False,"rl_safe_eval(%r)=%r did not raise %s" % (expr,result,exception.__name__))
except exception:
return
except:
self.assertEqual(True,False,"rl_safe_eval(%r) raised %s: %s instead of %s" % (expr,sys.exc_info()[0].__name__,str(sys.exc_info()[1]),exception.__name__))
GA = 'ga'
class SafeEvalTestBasics(unittest.TestCase):
def test_001(self):
A=3
self.assertTrue(rl_safe_eval("A==3"))
def test_002(self):
self.assertTrue(rl_safe_eval("GA=='ga'"))
class ExtendedLiteralEval(unittest.TestCase):
def test_001(self):
S = colors.getAllNamedColors().copy()
C = {s:getattr(colors,s) for s in '''Blacker CMYKColor CMYKColorSep Color ColorType HexColor PCMYKColor PCMYKColorSep Whiter
_chooseEnforceColorSpace _enforceCMYK _enforceError _enforceRGB _enforceSEP _enforceSEP_BLACK
_enforceSEP_CMYK _namedColors _re_css asNative cmyk2rgb cmykDistance color2bw colorDistance
cssParse describe fade fp_str getAllNamedColors hsl2rgb hue2rgb linearlyInterpolatedColor
obj_R_G_B opaqueColor rgb2cmyk setColors toColor toColorOrNone'''.split()
if callable(getattr(colors,s,None))}
def showVal(s):
try:
r = rl_extended_literal_eval(s,C,S)
except:
r = str(sys.exc_info()[1])
return r
for expr, expected in (
('1.0', 1.0),
('1', 1),
('red', colors.red),
('True', True),
('False', False),
('None', None),
('Blacker(red,0.5)', colors.Color(.5,0,0,1)),
('PCMYKColor(21,10,30,5,spotName="ABCD")', colors.PCMYKColor(21,10,30,5,spotName='ABCD',alpha=100)),
('HexColor("#ffffff")', colors.Color(1,1,1,1)),
('linearlyInterpolatedColor(red, blue, 0, 1, 0.5)', colors.Color(.5,0,.5,1)),
('red.rgb()', 'Bad expression'),
('__import__("sys")', 'Bad expression'),
('globals()', 'Bad expression'),
('locals()', 'Bad expression'),
('vars()', 'Bad expression'),
('builtins', 'Bad expression'),
('__file__', 'Bad expression'),
('__name__', 'Bad expression'),
):
self.assertEqual(showVal(expr),expected,f"rl_extended_literal_eval({expr!r}) is not equal to expected {expected}")
def makeSuite():
return makeSuiteForClasses(SafeEvalTestCase,SafeEvalTestBasics,ExtendedLiteralEval)
if __name__ == "__main__": #noruntests
unittest.TextTestRunner().run(makeSuite())
printLocation()
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