shell bypass 403
import unittest
from email import _encoded_words as _ew
from email import errors
from test.test_email import TestEmailBase
class TestDecodeQ(TestEmailBase):
def _test(self, source, ex_result, ex_defects=[]):
result, defects = _ew.decode_q(source)
self.assertEqual(result, ex_result)
self.assertDefectsEqual(defects, ex_defects)
def test_no_encoded(self):
self._test(b'foobar', b'foobar')
def test_spaces(self):
self._test(b'foo=20bar=20', b'foo bar ')
self._test(b'foo_bar_', b'foo bar ')
def test_run_of_encoded(self):
self._test(b'foo=20=20=21=2Cbar', b'foo !,bar')
class TestDecodeB(TestEmailBase):
def _test(self, source, ex_result, ex_defects=[]):
result, defects = _ew.decode_b(source)
self.assertEqual(result, ex_result)
self.assertDefectsEqual(defects, ex_defects)
def test_simple(self):
self._test(b'Zm9v', b'foo')
def test_missing_padding(self):
self._test(b'dmk', b'vi', [errors.InvalidBase64PaddingDefect])
def test_invalid_character(self):
self._test(b'dm\x01k===', b'vi', [errors.InvalidBase64CharactersDefect])
def test_invalid_character_and_bad_padding(self):
self._test(b'dm\x01k', b'vi', [errors.InvalidBase64CharactersDefect,
errors.InvalidBase64PaddingDefect])
class TestDecode(TestEmailBase):
def test_wrong_format_input_raises(self):
with self.assertRaises(ValueError):
_ew.decode('=?badone?=')
with self.assertRaises(ValueError):
_ew.decode('=?')
with self.assertRaises(ValueError):
_ew.decode('')
def _test(self, source, result, charset='us-ascii', lang='', defects=[]):
res, char, l, d = _ew.decode(source)
self.assertEqual(res, result)
self.assertEqual(char, charset)
self.assertEqual(l, lang)
self.assertDefectsEqual(d, defects)
def test_simple_q(self):
self._test('=?us-ascii?q?foo?=', 'foo')
def test_simple_b(self):
self._test('=?us-ascii?b?dmk=?=', 'vi')
def test_q_case_ignored(self):
self._test('=?us-ascii?Q?foo?=', 'foo')
def test_b_case_ignored(self):
self._test('=?us-ascii?B?dmk=?=', 'vi')
def test_non_trivial_q(self):
self._test('=?latin-1?q?=20F=fcr=20Elise=20?=', ' Für Elise ', 'latin-1')
def test_q_escaped_bytes_preserved(self):
self._test(b'=?us-ascii?q?=20\xACfoo?='.decode('us-ascii',
'surrogateescape'),
' \uDCACfoo',
defects = [errors.UndecodableBytesDefect])
def test_b_undecodable_bytes_ignored_with_defect(self):
self._test(b'=?us-ascii?b?dm\xACk?='.decode('us-ascii',
'surrogateescape'),
'vi',
defects = [
errors.InvalidBase64CharactersDefect,
errors.InvalidBase64PaddingDefect])
def test_b_invalid_bytes_ignored_with_defect(self):
self._test('=?us-ascii?b?dm\x01k===?=',
'vi',
defects = [errors.InvalidBase64CharactersDefect])
def test_b_invalid_bytes_incorrect_padding(self):
self._test('=?us-ascii?b?dm\x01k?=',
'vi',
defects = [
errors.InvalidBase64CharactersDefect,
errors.InvalidBase64PaddingDefect])
def test_b_padding_defect(self):
self._test('=?us-ascii?b?dmk?=',
'vi',
defects = [errors.InvalidBase64PaddingDefect])
def test_nonnull_lang(self):
self._test('=?us-ascii*jive?q?test?=', 'test', lang='jive')
def test_unknown_8bit_charset(self):
self._test('=?unknown-8bit?q?foo=ACbar?=',
b'foo\xacbar'.decode('ascii', 'surrogateescape'),
charset = 'unknown-8bit',
defects = [])
def test_unknown_charset(self):
self._test('=?foobar?q?foo=ACbar?=',
b'foo\xacbar'.decode('ascii', 'surrogateescape'),
charset = 'foobar',
# XXX Should this be a new Defect instead?
defects = [errors.CharsetError])
def test_q_nonascii(self):
self._test('=?utf-8?q?=C3=89ric?=',
'Éric',
charset='utf-8')
class TestEncodeQ(TestEmailBase):
def _test(self, src, expected):
self.assertEqual(_ew.encode_q(src), expected)
def test_all_safe(self):
self._test(b'foobar', 'foobar')
def test_spaces(self):
self._test(b'foo bar ', 'foo_bar_')
def test_run_of_encodables(self):
self._test(b'foo ,,bar', 'foo__=2C=2Cbar')
class TestEncodeB(TestEmailBase):
def test_simple(self):
self.assertEqual(_ew.encode_b(b'foo'), 'Zm9v')
def test_padding(self):
self.assertEqual(_ew.encode_b(b'vi'), 'dmk=')
class TestEncode(TestEmailBase):
def test_q(self):
self.assertEqual(_ew.encode('foo', 'utf-8', 'q'), '=?utf-8?q?foo?=')
def test_b(self):
self.assertEqual(_ew.encode('foo', 'utf-8', 'b'), '=?utf-8?b?Zm9v?=')
def test_auto_q(self):
self.assertEqual(_ew.encode('foo', 'utf-8'), '=?utf-8?q?foo?=')
def test_auto_q_if_short_mostly_safe(self):
self.assertEqual(_ew.encode('vi.', 'utf-8'), '=?utf-8?q?vi=2E?=')
def test_auto_b_if_enough_unsafe(self):
self.assertEqual(_ew.encode('.....', 'utf-8'), '=?utf-8?b?Li4uLi4=?=')
def test_auto_b_if_long_unsafe(self):
self.assertEqual(_ew.encode('vi.vi.vi.vi.vi.', 'utf-8'),
'=?utf-8?b?dmkudmkudmkudmkudmku?=')
def test_auto_q_if_long_mostly_safe(self):
self.assertEqual(_ew.encode('vi vi vi.vi ', 'utf-8'),
'=?utf-8?q?vi_vi_vi=2Evi_?=')
def test_utf8_default(self):
self.assertEqual(_ew.encode('foo'), '=?utf-8?q?foo?=')
def test_lang(self):
self.assertEqual(_ew.encode('foo', lang='jive'), '=?utf-8*jive?q?foo?=')
def test_unknown_8bit(self):
self.assertEqual(_ew.encode('foo\uDCACbar', charset='unknown-8bit'),
'=?unknown-8bit?q?foo=ACbar?=')
if __name__ == '__main__':
unittest.main()