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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# 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.
import base64
import unittest
from keystone.common import pemutils
# List of 2-tuples, (pem_type, pem_header)
headers = pemutils.PEM_TYPE_TO_HEADER.items()
def make_data(size, offset=0):
return ''.join([chr((x + offset) % 255) for x in xrange(0, size)])
def make_base64_from_data(data):
return base64.b64encode(data)
def wrap_base64(base64_text):
wrapped_text = '\n'.join([base64_text[x:x + 64]
for x in xrange(0, len(base64_text), 64)])
wrapped_text += '\n'
return wrapped_text
def make_pem(header, data):
base64_text = make_base64_from_data(data)
wrapped_text = wrap_base64(base64_text)
result = '-----BEGIN %s-----\n' % header
result += wrapped_text
result += '-----END %s-----\n' % header
return result
class PEM(object):
"""PEM text and it's associated data broken out, used for testing.
"""
def __init__(self, pem_header='CERTIFICATE', pem_type='cert',
data_size=70, data_offset=0):
self.pem_header = pem_header
self.pem_type = pem_type
self.data_size = data_size
self.data_offset = data_offset
self.data = make_data(self.data_size, self.data_offset)
self.base64_text = make_base64_from_data(self.data)
self.wrapped_base64 = wrap_base64(self.base64_text)
self.pem_text = make_pem(self.pem_header, self.data)
class TestPEMParseResult(unittest.TestCase):
def test_pem_types(self):
for pem_type in pemutils.pem_types:
pem_header = pemutils.PEM_TYPE_TO_HEADER[pem_type]
r = pemutils.PEMParseResult(pem_type=pem_type)
self.assertEqual(pem_type, r.pem_type)
self.assertEqual(pem_header, r.pem_header)
pem_type = 'xxx'
self.assertRaises(ValueError,
pemutils.PEMParseResult, pem_type=pem_type)
def test_pem_headers(self):
for pem_header in pemutils.pem_headers:
pem_type = pemutils.PEM_HEADER_TO_TYPE[pem_header]
r = pemutils.PEMParseResult(pem_header=pem_header)
self.assertEqual(pem_type, r.pem_type)
self.assertEqual(pem_header, r.pem_header)
pem_header = 'xxx'
self.assertRaises(ValueError,
pemutils.PEMParseResult, pem_header=pem_header)
class TestPEMParse(unittest.TestCase):
def test_parse_none(self):
text = ''
text += 'bla bla\n'
text += 'yada yada yada\n'
text += 'burfl blatz bingo\n'
parse_results = pemutils.parse_pem(text)
self.assertEqual(len(parse_results), 0)
self.assertEqual(pemutils.is_pem(text), False)
def test_parse_invalid(self):
p = PEM(pem_type='xxx',
pem_header='XXX')
text = p.pem_text
self.assertRaises(ValueError,
pemutils.parse_pem, text)
def test_parse_one(self):
data_size = 70
count = len(headers)
pems = []
for i in xrange(0, count):
pems.append(PEM(pem_type=headers[i][0],
pem_header=headers[i][1],
data_size=data_size + i,
data_offset=i))
for i in xrange(0, count):
p = pems[i]
text = p.pem_text
parse_results = pemutils.parse_pem(text)
self.assertEqual(len(parse_results), 1)
r = parse_results[0]
self.assertEqual(p.pem_type, r.pem_type)
self.assertEqual(p.pem_header, r.pem_header)
self.assertEqual(p.pem_text,
text[r.pem_start:r.pem_end])
self.assertEqual(p.wrapped_base64,
text[r.base64_start:r.base64_end])
self.assertEqual(p.data, r.binary_data)
def test_parse_one_embedded(self):
p = PEM(data_offset=0)
text = ''
text += 'bla bla\n'
text += 'yada yada yada\n'
text += p.pem_text
text += 'burfl blatz bingo\n'
parse_results = pemutils.parse_pem(text)
self.assertEqual(len(parse_results), 1)
r = parse_results[0]
self.assertEqual(p.pem_type, r.pem_type)
self.assertEqual(p.pem_header, r.pem_header)
self.assertEqual(p.pem_text,
text[r.pem_start:r.pem_end])
self.assertEqual(p.wrapped_base64,
text[r.base64_start: r.base64_end])
self.assertEqual(p.data, r.binary_data)
def test_parse_multple(self):
data_size = 70
count = len(headers)
pems = []
text = ''
for i in xrange(0, count):
pems.append(PEM(pem_type=headers[i][0],
pem_header=headers[i][1],
data_size=data_size + i,
data_offset=i))
for i in xrange(0, count):
text += pems[i].pem_text
parse_results = pemutils.parse_pem(text)
self.assertEqual(len(parse_results), count)
for i in xrange(0, count):
r = parse_results[i]
p = pems[i]
self.assertEqual(p.pem_type, r.pem_type)
self.assertEqual(p.pem_header, r.pem_header)
self.assertEqual(p.pem_text,
text[r.pem_start:r.pem_end])
self.assertEqual(p.wrapped_base64,
text[r.base64_start: r.base64_end])
self.assertEqual(p.data, r.binary_data)
def test_parse_multple_find_specific(self):
data_size = 70
count = len(headers)
pems = []
text = ''
for i in xrange(0, count):
pems.append(PEM(pem_type=headers[i][0],
pem_header=headers[i][1],
data_size=data_size + i,
data_offset=i))
for i in xrange(0, count):
text += pems[i].pem_text
for i in xrange(0, count):
parse_results = pemutils.parse_pem(text, pem_type=headers[i][0])
self.assertEqual(len(parse_results), 1)
r = parse_results[0]
p = pems[i]
self.assertEqual(p.pem_type, r.pem_type)
self.assertEqual(p.pem_header, r.pem_header)
self.assertEqual(p.pem_text,
text[r.pem_start:r.pem_end])
self.assertEqual(p.wrapped_base64,
text[r.base64_start:r.base64_end])
self.assertEqual(p.data, r.binary_data)
def test_parse_multple_embedded(self):
data_size = 75
count = len(headers)
pems = []
text = ''
for i in xrange(0, count):
pems.append(PEM(pem_type=headers[i][0],
pem_header=headers[i][1],
data_size=data_size + i,
data_offset=i))
for i in xrange(0, count):
text += 'bla bla\n'
text += 'yada yada yada\n'
text += pems[i].pem_text
text += 'burfl blatz bingo\n'
parse_results = pemutils.parse_pem(text)
self.assertEqual(len(parse_results), count)
for i in xrange(0, count):
r = parse_results[i]
p = pems[i]
self.assertEqual(p.pem_type, r.pem_type)
self.assertEqual(p.pem_header, r.pem_header)
self.assertEqual(p.pem_text,
text[r.pem_start:r.pem_end])
self.assertEqual(p.wrapped_base64,
text[r.base64_start:r.base64_end])
self.assertEqual(p.data, r.binary_data)
def test_get_pem_data_none(self):
text = ''
text += 'bla bla\n'
text += 'yada yada yada\n'
text += 'burfl blatz bingo\n'
data = pemutils.get_pem_data(text)
self.assertEqual(None, data)
def test_get_pem_data_invalid(self):
p = PEM(pem_type='xxx',
pem_header='XXX')
text = p.pem_text
self.assertRaises(ValueError,
pemutils.get_pem_data, text)
def test_get_pem_data(self):
data_size = 70
count = len(headers)
pems = []
for i in xrange(0, count):
pems.append(PEM(pem_type=headers[i][0],
pem_header=headers[i][1],
data_size=data_size + i,
data_offset=i))
for i in xrange(0, count):
p = pems[i]
text = p.pem_text
data = pemutils.get_pem_data(text, p.pem_type)
self.assertEqual(p.data, data)
def test_is_pem(self):
data_size = 70
count = len(headers)
pems = []
for i in xrange(0, count):
pems.append(PEM(pem_type=headers[i][0],
pem_header=headers[i][1],
data_size=data_size + i,
data_offset=i))
for i in xrange(0, count):
p = pems[i]
text = p.pem_text
self.assertTrue(pemutils.is_pem(text, pem_type=p.pem_type))
self.assertFalse(pemutils.is_pem(text,
pem_type=p.pem_type + 'xxx'))
def test_base64_to_pem(self):
data_size = 70
count = len(headers)
pems = []
for i in xrange(0, count):
pems.append(PEM(pem_type=headers[i][0],
pem_header=headers[i][1],
data_size=data_size + i,
data_offset=i))
for i in xrange(0, count):
p = pems[i]
pem = pemutils.base64_to_pem(p.base64_text, p.pem_type)
self.assertEqual(pemutils.get_pem_data(pem, p.pem_type), p.data)
def test_binary_to_pem(self):
data_size = 70
count = len(headers)
pems = []
for i in xrange(0, count):
pems.append(PEM(pem_type=headers[i][0],
pem_header=headers[i][1],
data_size=data_size + i,
data_offset=i))
for i in xrange(0, count):
p = pems[i]
pem = pemutils.binary_to_pem(p.data, p.pem_type)
self.assertEqual(pemutils.get_pem_data(pem, p.pem_type), p.data)
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