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# Copyright 2013 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from keystone.common import base64utils
from keystone.tests import unit as tests
base64_alphabet = ('ABCDEFGHIJKLMNOPQRSTUVWXYZ'
'abcdefghijklmnopqrstuvwxyz'
'0123456789'
'+/=') # includes pad char
base64url_alphabet = ('ABCDEFGHIJKLMNOPQRSTUVWXYZ'
'abcdefghijklmnopqrstuvwxyz'
'0123456789'
'-_=') # includes pad char
class TestValid(tests.BaseTestCase):
def test_valid_base64(self):
self.assertTrue(base64utils.is_valid_base64('+/=='))
self.assertTrue(base64utils.is_valid_base64('+/+='))
self.assertTrue(base64utils.is_valid_base64('+/+/'))
self.assertFalse(base64utils.is_valid_base64('-_=='))
self.assertFalse(base64utils.is_valid_base64('-_-='))
self.assertFalse(base64utils.is_valid_base64('-_-_'))
self.assertTrue(base64utils.is_valid_base64('abcd'))
self.assertFalse(base64utils.is_valid_base64('abcde'))
self.assertFalse(base64utils.is_valid_base64('abcde=='))
self.assertFalse(base64utils.is_valid_base64('abcdef'))
self.assertTrue(base64utils.is_valid_base64('abcdef=='))
self.assertFalse(base64utils.is_valid_base64('abcdefg'))
self.assertTrue(base64utils.is_valid_base64('abcdefg='))
self.assertTrue(base64utils.is_valid_base64('abcdefgh'))
self.assertFalse(base64utils.is_valid_base64('-_=='))
def test_valid_base64url(self):
self.assertFalse(base64utils.is_valid_base64url('+/=='))
self.assertFalse(base64utils.is_valid_base64url('+/+='))
self.assertFalse(base64utils.is_valid_base64url('+/+/'))
self.assertTrue(base64utils.is_valid_base64url('-_=='))
self.assertTrue(base64utils.is_valid_base64url('-_-='))
self.assertTrue(base64utils.is_valid_base64url('-_-_'))
self.assertTrue(base64utils.is_valid_base64url('abcd'))
self.assertFalse(base64utils.is_valid_base64url('abcde'))
self.assertFalse(base64utils.is_valid_base64url('abcde=='))
self.assertFalse(base64utils.is_valid_base64url('abcdef'))
self.assertTrue(base64utils.is_valid_base64url('abcdef=='))
self.assertFalse(base64utils.is_valid_base64url('abcdefg'))
self.assertTrue(base64utils.is_valid_base64url('abcdefg='))
self.assertTrue(base64utils.is_valid_base64url('abcdefgh'))
self.assertTrue(base64utils.is_valid_base64url('-_=='))
class TestBase64Padding(tests.BaseTestCase):
def test_filter(self):
self.assertEqual('', base64utils.filter_formatting(''))
self.assertEqual('', base64utils.filter_formatting(' '))
self.assertEqual('a', base64utils.filter_formatting('a'))
self.assertEqual('a', base64utils.filter_formatting(' a'))
self.assertEqual('a', base64utils.filter_formatting('a '))
self.assertEqual('ab', base64utils.filter_formatting('ab'))
self.assertEqual('ab', base64utils.filter_formatting(' ab'))
self.assertEqual('ab', base64utils.filter_formatting('ab '))
self.assertEqual('ab', base64utils.filter_formatting('a b'))
self.assertEqual('ab', base64utils.filter_formatting(' a b'))
self.assertEqual('ab', base64utils.filter_formatting('a b '))
self.assertEqual('ab', base64utils.filter_formatting('a\nb\n '))
text = ('ABCDEFGHIJKLMNOPQRSTUVWXYZ'
'abcdefghijklmnopqrstuvwxyz'
'0123456789'
'+/=')
self.assertEqual(base64_alphabet,
base64utils.filter_formatting(text))
text = (' ABCDEFGHIJKLMNOPQRSTUVWXYZ\n'
' abcdefghijklmnopqrstuvwxyz\n'
'\t\f\r'
' 0123456789\n'
' +/=')
self.assertEqual(base64_alphabet,
base64utils.filter_formatting(text))
self.assertEqual(base64url_alphabet,
base64utils.base64_to_base64url(base64_alphabet))
text = ('ABCDEFGHIJKLMNOPQRSTUVWXYZ'
'abcdefghijklmnopqrstuvwxyz'
'0123456789'
'-_=')
self.assertEqual(base64url_alphabet,
base64utils.filter_formatting(text))
text = (' ABCDEFGHIJKLMNOPQRSTUVWXYZ\n'
' abcdefghijklmnopqrstuvwxyz\n'
'\t\f\r'
' 0123456789\n'
'-_=')
self.assertEqual(base64url_alphabet,
base64utils.filter_formatting(text))
def test_alphabet_conversion(self):
self.assertEqual(base64url_alphabet,
base64utils.base64_to_base64url(base64_alphabet))
self.assertEqual(base64_alphabet,
base64utils.base64url_to_base64(base64url_alphabet))
def test_is_padded(self):
self.assertTrue(base64utils.base64_is_padded('ABCD'))
self.assertTrue(base64utils.base64_is_padded('ABC='))
self.assertTrue(base64utils.base64_is_padded('AB=='))
self.assertTrue(base64utils.base64_is_padded('1234ABCD'))
self.assertTrue(base64utils.base64_is_padded('1234ABC='))
self.assertTrue(base64utils.base64_is_padded('1234AB=='))
self.assertFalse(base64utils.base64_is_padded('ABC'))
self.assertFalse(base64utils.base64_is_padded('AB'))
self.assertFalse(base64utils.base64_is_padded('A'))
self.assertFalse(base64utils.base64_is_padded(''))
self.assertRaises(base64utils.InvalidBase64Error,
base64utils.base64_is_padded, '=')
self.assertRaises(base64utils.InvalidBase64Error,
base64utils.base64_is_padded, 'AB=C')
self.assertRaises(base64utils.InvalidBase64Error,
base64utils.base64_is_padded, 'AB=')
self.assertRaises(base64utils.InvalidBase64Error,
base64utils.base64_is_padded, 'ABCD=')
self.assertRaises(ValueError, base64utils.base64_is_padded,
'ABC', pad='==')
self.assertRaises(base64utils.InvalidBase64Error,
base64utils.base64_is_padded, 'A=BC')
def test_strip_padding(self):
self.assertEqual('ABCD', base64utils.base64_strip_padding('ABCD'))
self.assertEqual('ABC', base64utils.base64_strip_padding('ABC='))
self.assertEqual('AB', base64utils.base64_strip_padding('AB=='))
self.assertRaises(ValueError, base64utils.base64_strip_padding,
'ABC=', pad='==')
self.assertEqual('ABC', base64utils.base64_strip_padding('ABC'))
def test_assure_padding(self):
self.assertEqual('ABCD', base64utils.base64_assure_padding('ABCD'))
self.assertEqual('ABC=', base64utils.base64_assure_padding('ABC'))
self.assertEqual('ABC=', base64utils.base64_assure_padding('ABC='))
self.assertEqual('AB==', base64utils.base64_assure_padding('AB'))
self.assertEqual('AB==', base64utils.base64_assure_padding('AB=='))
self.assertRaises(ValueError, base64utils.base64_assure_padding,
'ABC', pad='==')
def test_base64_percent_encoding(self):
self.assertEqual('ABCD', base64utils.base64url_percent_encode('ABCD'))
self.assertEqual('ABC%3D',
base64utils.base64url_percent_encode('ABC='))
self.assertEqual('AB%3D%3D',
base64utils.base64url_percent_encode('AB=='))
self.assertEqual('ABCD', base64utils.base64url_percent_decode('ABCD'))
self.assertEqual('ABC=',
base64utils.base64url_percent_decode('ABC%3D'))
self.assertEqual('AB==',
base64utils.base64url_percent_decode('AB%3D%3D'))
self.assertRaises(base64utils.InvalidBase64Error,
base64utils.base64url_percent_encode, 'chars')
self.assertRaises(base64utils.InvalidBase64Error,
base64utils.base64url_percent_decode, 'AB%3D%3')
class TestTextWrap(tests.BaseTestCase):
def test_wrapping(self):
raw_text = 'abcdefgh'
wrapped_text = 'abc\ndef\ngh\n'
self.assertEqual(wrapped_text,
base64utils.base64_wrap(raw_text, width=3))
t = '\n'.join(base64utils.base64_wrap_iter(raw_text, width=3)) + '\n'
self.assertEqual(wrapped_text, t)
raw_text = 'abcdefgh'
wrapped_text = 'abcd\nefgh\n'
self.assertEqual(wrapped_text,
base64utils.base64_wrap(raw_text, width=4))
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