/usr/share/caldavtester/src/httpshandler.py is in caldav-tester 7.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (c) 2010-2015 Apple Inc. All rights reserved.
#
# 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 httplib
import socket
import ssl as sslmodule
class HTTPSVersionConnection(httplib.HTTPSConnection):
"""
An L{httplib.HTTPSConnection} class that allows the TLS protocol version to be set.
"""
def __init__(self, host, port, ssl_version=sslmodule.PROTOCOL_TLSv1):
httplib.HTTPSConnection.__init__(self, host, port)
self._ssl_version = ssl_version
def connect(self):
"Connect to a host on a given (SSL) port."
sock = socket.create_connection((self.host, self.port), self.timeout)
self.sock = sslmodule.wrap_socket(sock, self.key_file, self.cert_file, ssl_version=self._ssl_version)
cached_types = (
(set(), sslmodule.PROTOCOL_TLSv1),
# (set(), sslmodule.PROTOCOL_SSLv3),
(set(), sslmodule.PROTOCOL_SSLv23),
)
class UnixSocketHTTPConnection(httplib.HTTPConnection):
"""
An L{httplib.HTTPConnection} class that uses a unix socket rather than TCP.
"""
def __init__(self, path, host, port):
httplib.HTTPConnection.__init__(self, host, port)
self.path = path
def connect(self):
"""
Connect using the supplied unix socket file path
"""
self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
self.sock.connect(self.path)
def SmartHTTPConnection(host, port, ssl, afunix):
"""
Create the appropriate L{httplib.HTTPConnection} derived class for the supplied arguments.
@param host: TCP host name
@type host: L{str}
@param port: TCP port number
@type port: L{int}
@param ssl: indicates if SSL is to be used
@type ssl: L{bool}
@param afunix: unix socket to use or L{None}
@type afunix: L{str}
"""
def trySSL(version):
connect = HTTPSVersionConnection(host, port, ssl_version=version)
connect.connect()
return connect
if afunix:
connect = UnixSocketHTTPConnection(afunix, host, port)
elif ssl:
# Iterate over the TL:S versions and find one that works and cache it for future use.
for cached, connection_type in cached_types:
if (host, port) in cached:
try:
return trySSL(connection_type)
except:
cached.remove((host, port))
for cached, connection_type in cached_types:
try:
cached.add((host, port))
return trySSL(connection_type)
except:
cached.remove((host, port))
raise RuntimeError("Cannot connect via with TLSv1, SSLv3 or SSLv23")
else:
connect = httplib.HTTPConnection(host, port)
connect.connect()
return connect
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