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# Copyright (C) 2011,2012 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""Tests for the SSL support in the urllib HTTP transport.
"""
import os
import ssl
from bzrlib import (
config,
trace,
)
from bzrlib.errors import (
CertificateError,
ConfigOptionValueError,
)
from bzrlib.tests import (
TestCase,
TestCaseInTempDir,
)
from bzrlib.transport.http import _urllib2_wrappers
class CaCertsConfigTests(TestCaseInTempDir):
def get_stack(self, content):
return config.MemoryStack(content.encode('utf-8'))
def test_default_exists(self):
"""Check that the default we provide exists for the tested platform."""
stack = self.get_stack("")
self.assertPathExists(stack.get('ssl.ca_certs'))
def test_specified(self):
self.build_tree(['cacerts.pem'])
path = os.path.join(self.test_dir, "cacerts.pem")
stack = self.get_stack("ssl.ca_certs = %s\n" % path)
self.assertEquals(path, stack.get('ssl.ca_certs'))
def test_specified_doesnt_exist(self):
stack = self.get_stack('')
# Disable the default value mechanism to force the behavior we want
self.overrideAttr(_urllib2_wrappers.opt_ssl_ca_certs, 'default',
os.path.join(self.test_dir, u"nonexisting.pem"))
self.warnings = []
def warning(*args):
self.warnings.append(args[0] % args[1:])
self.overrideAttr(trace, 'warning', warning)
self.assertEquals(None, stack.get('ssl.ca_certs'))
self.assertLength(1, self.warnings)
self.assertContainsRe(self.warnings[0],
"is not valid for \"ssl.ca_certs\"")
class CertReqsConfigTests(TestCaseInTempDir):
def test_default(self):
stack = config.MemoryStack("")
self.assertEquals(ssl.CERT_REQUIRED, stack.get("ssl.cert_reqs"))
def test_from_string(self):
stack = config.MemoryStack("ssl.cert_reqs = none\n")
self.assertEquals(ssl.CERT_NONE, stack.get("ssl.cert_reqs"))
stack = config.MemoryStack("ssl.cert_reqs = required\n")
self.assertEquals(ssl.CERT_REQUIRED, stack.get("ssl.cert_reqs"))
stack = config.MemoryStack("ssl.cert_reqs = invalid\n")
self.assertRaises(ConfigOptionValueError, stack.get, "ssl.cert_reqs")
class MatchHostnameTests(TestCase):
def test_no_certificate(self):
self.assertRaises(ValueError,
_urllib2_wrappers.match_hostname, {}, "example.com")
def test_wildcards_in_cert(self):
def ok(cert, hostname):
_urllib2_wrappers.match_hostname(cert, hostname)
# Python Issue #17980: avoid denials of service by refusing more than
# one wildcard per fragment.
cert = {'subject': ((('commonName', 'a*b.com'),),)}
ok(cert, 'axxb.com')
cert = {'subject': ((('commonName', 'a*b.co*'),),)}
ok(cert, 'axxb.com')
cert = {'subject': ((('commonName', 'a*b*.com'),),)}
try:
_urllib2_wrappers.match_hostname(cert, 'axxbxxc.com')
except ValueError as e:
self.assertIn("too many wildcards", str(e))
def test_no_valid_attributes(self):
self.assertRaises(CertificateError, _urllib2_wrappers.match_hostname,
{"Problem": "Solved"}, "example.com")
def test_common_name(self):
cert = {'subject': ((('commonName', 'example.com'),),)}
self.assertIs(None,
_urllib2_wrappers.match_hostname(cert, "example.com"))
self.assertRaises(CertificateError, _urllib2_wrappers.match_hostname,
cert, "example.org")
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