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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Tests for implementations of L{IReactorUNIX}.
"""
from __future__ import division, absolute_import
from stat import S_IMODE
from os import stat, close, urandom, unlink, fstat
from tempfile import mktemp, mkstemp
from socket import AF_INET, SOCK_STREAM, SOL_SOCKET, socket, error
from pprint import pformat
from hashlib import md5
from struct import pack
try:
from socket import AF_UNIX
except ImportError:
AF_UNIX = None
from zope.interface import implementer
from twisted.internet import interfaces, base
from twisted.internet.address import UNIXAddress
from twisted.internet.defer import Deferred, fail, gatherResults
from twisted.internet.endpoints import UNIXServerEndpoint, UNIXClientEndpoint
from twisted.internet.error import (ConnectionClosed, FileDescriptorOverrun,
CannotListenError)
from twisted.internet.interfaces import (IFileDescriptorReceiver, IReactorUNIX,
IReactorSocket, IReactorFDSet)
from twisted.internet.protocol import DatagramProtocol
from twisted.internet.protocol import ServerFactory, ClientFactory
from twisted.internet.task import LoopingCall
from twisted.internet.test.connectionmixins import EndpointCreator
from twisted.internet.test.reactormixins import ReactorBuilder
from twisted.internet.test.test_core import ObjectModelIntegrationMixin
from twisted.internet.test.test_tcp import (StreamTransportTestsMixin,
WriteSequenceTestsMixin, MyClientFactory, MyServerFactory,)
from twisted.internet.test.connectionmixins import ConnectableProtocol
from twisted.internet.test.connectionmixins import ConnectionTestsMixin
from twisted.internet.test.connectionmixins import StreamClientTestsMixin
from twisted.internet.test.connectionmixins import runProtocolsWithReactor
from twisted.python.compat import nativeString, _PY3, iteritems
from twisted.python.failure import Failure
from twisted.python.log import addObserver, removeObserver, err
from twisted.python.runtime import platform
from twisted.python.reflect import requireModule
from twisted.python.filepath import _coerceToFilesystemEncoding
if requireModule("twisted.python.sendmsg") is not None:
sendmsgSkip = None
else:
sendmsgSkip = (
"sendmsg extension unavailable, extended UNIX features disabled")
class UNIXFamilyMixin(object):
"""
Test-helper defining mixin for things related to AF_UNIX sockets.
"""
def _modeTest(self, methodName, path, factory):
"""
Assert that the mode of the created unix socket is set to the mode
specified to the reactor method.
"""
mode = 0o600
reactor = self.buildReactor()
unixPort = getattr(reactor, methodName)(path, factory, mode=mode)
unixPort.stopListening()
self.assertEqual(S_IMODE(stat(path).st_mode), mode)
def _abstractPath(case):
"""
Return a new, unique abstract namespace path to be listened on.
"""
return md5(urandom(100)).hexdigest()
class UNIXCreator(EndpointCreator):
"""
Create UNIX socket end points.
"""
requiredInterfaces = (interfaces.IReactorUNIX,)
def server(self, reactor):
"""
Construct a UNIX server endpoint.
"""
# self.mktemp() often returns a path which is too long to be used.
path = mktemp(suffix='.sock', dir='.')
return UNIXServerEndpoint(reactor, path)
def client(self, reactor, serverAddress):
"""
Construct a UNIX client endpoint.
"""
return UNIXClientEndpoint(reactor, serverAddress.name)
class SendFileDescriptor(ConnectableProtocol):
"""
L{SendFileDescriptorAndBytes} sends a file descriptor and optionally some
normal bytes and then closes its connection.
@ivar reason: The reason the connection was lost, after C{connectionLost}
is called.
"""
reason = None
def __init__(self, fd, data):
"""
@param fd: A C{int} giving a file descriptor to send over the
connection.
@param data: A C{str} giving data to send over the connection, or
L{None} if no data is to be sent.
"""
self.fd = fd
self.data = data
def connectionMade(self):
"""
Send C{self.fd} and, if it is not L{None}, C{self.data}. Then close the
connection.
"""
self.transport.sendFileDescriptor(self.fd)
if self.data:
self.transport.write(self.data)
self.transport.loseConnection()
def connectionLost(self, reason):
ConnectableProtocol.connectionLost(self, reason)
self.reason = reason
@implementer(IFileDescriptorReceiver)
class ReceiveFileDescriptor(ConnectableProtocol):
"""
L{ReceiveFileDescriptor} provides an API for waiting for file descriptors to
be received.
@ivar reason: The reason the connection was lost, after C{connectionLost}
is called.
@ivar waiting: A L{Deferred} which fires with a file descriptor once one is
received, or with a failure if the connection is lost with no descriptor
arriving.
"""
reason = None
waiting = None
def waitForDescriptor(self):
"""
Return a L{Deferred} which will fire with the next file descriptor
received, or with a failure if the connection is or has already been
lost.
"""
if self.reason is None:
self.waiting = Deferred()
return self.waiting
else:
return fail(self.reason)
def fileDescriptorReceived(self, descriptor):
"""
Fire the waiting Deferred, initialized by C{waitForDescriptor}, with the
file descriptor just received.
"""
self.waiting.callback(descriptor)
self.waiting = None
def dataReceived(self, data):
"""
Fail the waiting Deferred, if it has not already been fired by
C{fileDescriptorReceived}. The bytes sent along with a file descriptor
are guaranteed to be delivered to the protocol's C{dataReceived} method
only after the file descriptor has been delivered to the protocol's
C{fileDescriptorReceived}.
"""
if self.waiting is not None:
self.waiting.errback(Failure(Exception(
"Received bytes (%r) before descriptor." % (data,))))
self.waiting = None
def connectionLost(self, reason):
"""
Fail the waiting Deferred, initialized by C{waitForDescriptor}, if there
is one.
"""
ConnectableProtocol.connectionLost(self, reason)
if self.waiting is not None:
self.waiting.errback(reason)
self.waiting = None
self.reason = reason
class UNIXTestsBuilder(UNIXFamilyMixin, ReactorBuilder, ConnectionTestsMixin):
"""
Builder defining tests relating to L{IReactorUNIX}.
"""
requiredInterfaces = (IReactorUNIX,)
endpoints = UNIXCreator()
def test_mode(self):
"""
The UNIX socket created by L{IReactorUNIX.listenUNIX} is created with
the mode specified.
"""
self._modeTest('listenUNIX', self.mktemp(), ServerFactory())
def test_listenOnLinuxAbstractNamespace(self):
"""
On Linux, a UNIX socket path may begin with C{'\0'} to indicate a socket
in the abstract namespace. L{IReactorUNIX.listenUNIX} accepts such a
path.
"""
# Don't listen on a path longer than the maximum allowed.
path = _abstractPath(self)
reactor = self.buildReactor()
port = reactor.listenUNIX('\0' + path, ServerFactory())
self.assertEqual(port.getHost(), UNIXAddress('\0' + path))
if not platform.isLinux():
test_listenOnLinuxAbstractNamespace.skip = (
'Abstract namespace UNIX sockets only supported on Linux.')
def test_listenFailure(self):
"""
L{IReactorUNIX.listenUNIX} raises L{CannotListenError} if the
underlying port's createInternetSocket raises a socket error.
"""
def raiseSocketError(self):
raise error('FakeBasePort forced socket.error')
self.patch(base.BasePort, "createInternetSocket", raiseSocketError)
reactor = self.buildReactor()
with self.assertRaises(CannotListenError):
reactor.listenUNIX('not-used', ServerFactory())
def test_connectToLinuxAbstractNamespace(self):
"""
L{IReactorUNIX.connectUNIX} also accepts a Linux abstract namespace
path.
"""
path = _abstractPath(self)
reactor = self.buildReactor()
connector = reactor.connectUNIX('\0' + path, ClientFactory())
self.assertEqual(connector.getDestination(), UNIXAddress('\0' + path))
if not platform.isLinux():
test_connectToLinuxAbstractNamespace.skip = (
'Abstract namespace UNIX sockets only supported on Linux.')
def test_addresses(self):
"""
A client's transport's C{getHost} and C{getPeer} return L{UNIXAddress}
instances which have the filesystem path of the host and peer ends of
the connection.
"""
class SaveAddress(ConnectableProtocol):
def makeConnection(self, transport):
self.addresses = dict(
host=transport.getHost(), peer=transport.getPeer())
transport.loseConnection()
server = SaveAddress()
client = SaveAddress()
runProtocolsWithReactor(self, server, client, self.endpoints)
self.assertEqual(server.addresses['host'], client.addresses['peer'])
self.assertEqual(server.addresses['peer'], client.addresses['host'])
def test_sendFileDescriptor(self):
"""
L{IUNIXTransport.sendFileDescriptor} accepts an integer file descriptor
and sends a copy of it to the process reading from the connection.
"""
from socket import fromfd
s = socket()
s.bind(('', 0))
server = SendFileDescriptor(s.fileno(), b"junk")
client = ReceiveFileDescriptor()
d = client.waitForDescriptor()
def checkDescriptor(descriptor):
received = fromfd(descriptor, AF_INET, SOCK_STREAM)
# Thanks for the free dup, fromfd()
close(descriptor)
# If the sockets have the same local address, they're probably the
# same.
self.assertEqual(s.getsockname(), received.getsockname())
# But it would be cheating for them to be identified by the same
# file descriptor. The point was to get a copy, as we might get if
# there were two processes involved here.
self.assertNotEqual(s.fileno(), received.fileno())
d.addCallback(checkDescriptor)
d.addErrback(err, "Sending file descriptor encountered a problem")
d.addBoth(lambda ignored: server.transport.loseConnection())
runProtocolsWithReactor(self, server, client, self.endpoints)
if sendmsgSkip is not None:
test_sendFileDescriptor.skip = sendmsgSkip
def test_sendFileDescriptorTriggersPauseProducing(self):
"""
If a L{IUNIXTransport.sendFileDescriptor} call fills up the send buffer,
any registered producer is paused.
"""
class DoesNotRead(ConnectableProtocol):
def connectionMade(self):
self.transport.pauseProducing()
class SendsManyFileDescriptors(ConnectableProtocol):
paused = False
def connectionMade(self):
self.socket = socket()
self.transport.registerProducer(self, True)
def sender():
self.transport.sendFileDescriptor(self.socket.fileno())
self.transport.write(b"x")
self.task = LoopingCall(sender)
self.task.clock = self.transport.reactor
self.task.start(0).addErrback(err, "Send loop failure")
def stopProducing(self):
self._disconnect()
def resumeProducing(self):
self._disconnect()
def pauseProducing(self):
self.paused = True
self.transport.unregisterProducer()
self._disconnect()
def _disconnect(self):
self.task.stop()
self.transport.abortConnection()
self.other.transport.abortConnection()
server = SendsManyFileDescriptors()
client = DoesNotRead()
server.other = client
runProtocolsWithReactor(self, server, client, self.endpoints)
self.assertTrue(
server.paused, "sendFileDescriptor producer was not paused")
if sendmsgSkip is not None:
test_sendFileDescriptorTriggersPauseProducing.skip = sendmsgSkip
def test_fileDescriptorOverrun(self):
"""
If L{IUNIXTransport.sendFileDescriptor} is used to queue a greater
number of file descriptors than the number of bytes sent using
L{ITransport.write}, the connection is closed and the protocol connected
to the transport has its C{connectionLost} method called with a failure
wrapping L{FileDescriptorOverrun}.
"""
cargo = socket()
server = SendFileDescriptor(cargo.fileno(), None)
client = ReceiveFileDescriptor()
result = []
d = client.waitForDescriptor()
d.addBoth(result.append)
d.addBoth(lambda ignored: server.transport.loseConnection())
runProtocolsWithReactor(self, server, client, self.endpoints)
self.assertIsInstance(result[0], Failure)
result[0].trap(ConnectionClosed)
self.assertIsInstance(server.reason.value, FileDescriptorOverrun)
if sendmsgSkip is not None:
test_fileDescriptorOverrun.skip = sendmsgSkip
def _sendmsgMixinFileDescriptorReceivedDriver(self, ancillaryPacker):
"""
Drive _SendmsgMixin via sendmsg socket calls to check that
L{IFileDescriptorReceiver.fileDescriptorReceived} is called once
for each file descriptor received in the ancillary messages.
@param ancillaryPacker: A callable that will be given a list of
two file descriptors and should return a two-tuple where:
The first item is an iterable of zero or more (cmsg_level,
cmsg_type, cmsg_data) tuples in the same order as the given
list for actual sending via sendmsg; the second item is an
integer indicating the expected number of FDs to be received.
"""
# Strategy:
# - Create a UNIX socketpair.
# - Associate one end to a FakeReceiver and FakeProtocol.
# - Call sendmsg on the other end to send FDs as ancillary data.
# Ancillary data is obtained calling ancillaryPacker with
# the two FDs associated to two temp files (using the socket
# FDs for this fails the device/inode verification tests on
# macOS 10.10, so temp files are used instead).
# - Call doRead in the FakeReceiver.
# - Verify results on FakeProtocol.
# Using known device/inodes to verify correct order.
# TODO: replace FakeReceiver test approach with one based in
# IReactorSocket.adoptStreamConnection once AF_UNIX support is
# implemented; see https://twistedmatrix.com/trac/ticket/5573.
from socket import socketpair
from twisted.internet.unix import _SendmsgMixin
from twisted.python.sendmsg import sendmsg
def deviceInodeTuple(fd):
fs = fstat(fd)
return (fs.st_dev, fs.st_ino)
@implementer(IFileDescriptorReceiver)
class FakeProtocol(ConnectableProtocol):
def __init__(self):
self.fds = []
self.deviceInodesReceived = []
def fileDescriptorReceived(self, fd):
self.fds.append(fd)
self.deviceInodesReceived.append(deviceInodeTuple(fd))
close(fd)
class FakeReceiver(_SendmsgMixin):
bufferSize = 1024
def __init__(self, skt, proto):
self.socket = skt
self.protocol = proto
def _dataReceived(self, data):
pass
def getHost(self):
pass
def getPeer(self):
pass
def _getLogPrefix(self, o):
pass
sendSocket, recvSocket = socketpair(AF_UNIX, SOCK_STREAM)
self.addCleanup(sendSocket.close)
self.addCleanup(recvSocket.close)
proto = FakeProtocol()
receiver = FakeReceiver(recvSocket, proto)
# Temp files give us two FDs to send/receive/verify.
fileOneFD, fileOneName = mkstemp()
fileTwoFD, fileTwoName = mkstemp()
self.addCleanup(unlink, fileOneName)
self.addCleanup(unlink, fileTwoName)
dataToSend = b'some data needs to be sent'
fdsToSend = [fileOneFD, fileTwoFD]
ancillary, expectedCount = ancillaryPacker(fdsToSend)
sendmsg(sendSocket, dataToSend, ancillary)
receiver.doRead()
# Verify that fileDescriptorReceived was called twice.
self.assertEqual(len(proto.fds), expectedCount)
# Verify that received FDs are different from the sent ones.
self.assertFalse(set(fdsToSend).intersection(set(proto.fds)))
# Verify that FDs were received in the same order, if any.
if proto.fds:
deviceInodesSent = [deviceInodeTuple(fd) for fd in fdsToSend]
self.assertEqual(deviceInodesSent, proto.deviceInodesReceived)
def test_multiFileDescriptorReceivedPerRecvmsgOneCMSG(self):
"""
_SendmsgMixin handles multiple file descriptors per recvmsg, calling
L{IFileDescriptorReceiver.fileDescriptorReceived} once per received
file descriptor. Scenario: single CMSG with two FDs.
"""
from twisted.python.sendmsg import SCM_RIGHTS
def ancillaryPacker(fdsToSend):
ancillary = [(SOL_SOCKET, SCM_RIGHTS, pack('ii', *fdsToSend))]
expectedCount = 2
return ancillary, expectedCount
self._sendmsgMixinFileDescriptorReceivedDriver(ancillaryPacker)
if sendmsgSkip is not None:
test_multiFileDescriptorReceivedPerRecvmsgOneCMSG.skip = sendmsgSkip
def test_multiFileDescriptorReceivedPerRecvmsgTwoCMSGs(self):
"""
_SendmsgMixin handles multiple file descriptors per recvmsg, calling
L{IFileDescriptorReceiver.fileDescriptorReceived} once per received
file descriptor. Scenario: two CMSGs with one FD each.
"""
from twisted.python.sendmsg import SCM_RIGHTS
def ancillaryPacker(fdsToSend):
ancillary = [
(SOL_SOCKET, SCM_RIGHTS, pack('i', fd))
for fd in fdsToSend
]
expectedCount = 2
return ancillary, expectedCount
self._sendmsgMixinFileDescriptorReceivedDriver(ancillaryPacker)
if platform.isMacOSX():
test_multiFileDescriptorReceivedPerRecvmsgTwoCMSGs.skip = (
"Multi control message ancillary sendmsg not supported on Mac.")
elif sendmsgSkip is not None:
test_multiFileDescriptorReceivedPerRecvmsgTwoCMSGs.skip = sendmsgSkip
def test_multiFileDescriptorReceivedPerRecvmsgBadCMSG(self):
"""
_SendmsgMixin handles multiple file descriptors per recvmsg, calling
L{IFileDescriptorReceiver.fileDescriptorReceived} once per received
file descriptor. Scenario: unsupported CMSGs.
"""
# Given that we can't just send random/invalid ancillary data via the
# packer for it to be sent via sendmsg -- the kernel would not accept
# it -- we'll temporarily replace recvmsg with a fake one that produces
# a non-supported ancillary message level/type. This being said, from
# the perspective of the ancillaryPacker, all that is required is to
# let the test driver know that 0 file descriptors are expected.
from twisted.python import sendmsg
def ancillaryPacker(fdsToSend):
ancillary = []
expectedCount = 0
return ancillary, expectedCount
def fakeRecvmsgUnsupportedAncillary(skt, *args, **kwargs):
data = b'some data'
ancillary = [(None, None, b'')]
flags = 0
return sendmsg.RecievedMessage(data, ancillary, flags)
events = []
addObserver(events.append)
self.addCleanup(removeObserver, events.append)
self.patch(sendmsg, "recvmsg", fakeRecvmsgUnsupportedAncillary)
self._sendmsgMixinFileDescriptorReceivedDriver(ancillaryPacker)
# Verify the expected message was logged.
expectedMessage = 'received unsupported ancillary data'
found = any(expectedMessage in e['format'] for e in events)
self.assertTrue(found, 'Expected message not found in logged events')
if sendmsgSkip is not None:
test_multiFileDescriptorReceivedPerRecvmsgBadCMSG.skip = sendmsgSkip
def test_avoidLeakingFileDescriptors(self):
"""
If associated with a protocol which does not provide
L{IFileDescriptorReceiver}, file descriptors received by the
L{IUNIXTransport} implementation are closed and a warning is emitted.
"""
# To verify this, establish a connection. Send one end of the
# connection over the IUNIXTransport implementation. After the copy
# should no longer exist, close the original. If the opposite end of
# the connection decides the connection is closed, the copy does not
# exist.
from socket import socketpair
probeClient, probeServer = socketpair()
events = []
addObserver(events.append)
self.addCleanup(removeObserver, events.append)
class RecordEndpointAddresses(SendFileDescriptor):
def connectionMade(self):
self.hostAddress = self.transport.getHost()
self.peerAddress = self.transport.getPeer()
SendFileDescriptor.connectionMade(self)
server = RecordEndpointAddresses(probeClient.fileno(), b"junk")
client = ConnectableProtocol()
runProtocolsWithReactor(self, server, client, self.endpoints)
# Get rid of the original reference to the socket.
probeClient.close()
# A non-blocking recv will return "" if the connection is closed, as
# desired. If the connection has not been closed, because the
# duplicate file descriptor is still open, it will fail with EAGAIN
# instead.
probeServer.setblocking(False)
self.assertEqual(b"", probeServer.recv(1024))
# This is a surprising circumstance, so it should be logged.
format = (
"%(protocolName)s (on %(hostAddress)r) does not "
"provide IFileDescriptorReceiver; closing file "
"descriptor received (from %(peerAddress)r).")
clsName = "ConnectableProtocol"
# Reverse host and peer, since the log event is from the client
# perspective.
expectedEvent = dict(hostAddress=server.peerAddress,
peerAddress=server.hostAddress,
protocolName=clsName,
format=format)
for logEvent in events:
for k, v in iteritems(expectedEvent):
if v != logEvent.get(k):
break
else:
# No mismatches were found, stop looking at events
break
else:
# No fully matching events were found, fail the test.
self.fail(
"Expected event (%s) not found in logged events (%s)" % (
expectedEvent, pformat(events,)))
if sendmsgSkip is not None:
test_avoidLeakingFileDescriptors.skip = sendmsgSkip
def test_descriptorDeliveredBeforeBytes(self):
"""
L{IUNIXTransport.sendFileDescriptor} sends file descriptors before
L{ITransport.write} sends normal bytes.
"""
@implementer(IFileDescriptorReceiver)
class RecordEvents(ConnectableProtocol):
def connectionMade(self):
ConnectableProtocol.connectionMade(self)
self.events = []
def fileDescriptorReceived(innerSelf, descriptor):
self.addCleanup(close, descriptor)
innerSelf.events.append(type(descriptor))
def dataReceived(self, data):
self.events.extend(data)
cargo = socket()
server = SendFileDescriptor(cargo.fileno(), b"junk")
client = RecordEvents()
runProtocolsWithReactor(self, server, client, self.endpoints)
self.assertEqual(int, client.events[0])
if _PY3:
self.assertEqual(b"junk", bytes(client.events[1:]))
else:
self.assertEqual(b"junk", b"".join(client.events[1:]))
if sendmsgSkip is not None:
test_descriptorDeliveredBeforeBytes.skip = sendmsgSkip
class UNIXDatagramTestsBuilder(UNIXFamilyMixin, ReactorBuilder):
"""
Builder defining tests relating to L{IReactorUNIXDatagram}.
"""
requiredInterfaces = (interfaces.IReactorUNIXDatagram,)
# There's no corresponding test_connectMode because the mode parameter to
# connectUNIXDatagram has been completely ignored since that API was first
# introduced.
def test_listenMode(self):
"""
The UNIX socket created by L{IReactorUNIXDatagram.listenUNIXDatagram}
is created with the mode specified.
"""
self._modeTest('listenUNIXDatagram', self.mktemp(), DatagramProtocol())
def test_listenOnLinuxAbstractNamespace(self):
"""
On Linux, a UNIX socket path may begin with C{'\0'} to indicate a socket
in the abstract namespace. L{IReactorUNIX.listenUNIXDatagram} accepts
such a path.
"""
path = _abstractPath(self)
reactor = self.buildReactor()
port = reactor.listenUNIXDatagram('\0' + path, DatagramProtocol())
self.assertEqual(port.getHost(), UNIXAddress('\0' + path))
if not platform.isLinux():
test_listenOnLinuxAbstractNamespace.skip = (
'Abstract namespace UNIX sockets only supported on Linux.')
class SocketUNIXMixin(object):
"""
Mixin which uses L{IReactorSocket.adoptStreamPort} to hand out listening
UNIX ports.
"""
requiredInterfaces = (IReactorUNIX, IReactorSocket,)
def getListeningPort(self, reactor, factory):
"""
Get a UNIX port from a reactor, wrapping an already-initialized file
descriptor.
"""
portSock = socket(AF_UNIX)
# self.mktemp() often returns a path which is too long to be used.
path = mktemp(suffix='.sock', dir='.')
portSock.bind(path)
portSock.listen(3)
portSock.setblocking(False)
try:
return reactor.adoptStreamPort(
portSock.fileno(), portSock.family, factory)
finally:
portSock.close()
def connectToListener(self, reactor, address, factory):
"""
Connect to a listening UNIX socket.
@param reactor: The reactor under test.
@type reactor: L{IReactorUNIX}
@param address: The listening's address.
@type address: L{UNIXAddress}
@param factory: The client factory.
@type factory: L{ClientFactory}
@return: The connector
"""
return reactor.connectUNIX(address.name, factory)
class ListenUNIXMixin(object):
"""
Mixin which uses L{IReactorTCP.listenUNIX} to hand out listening UNIX
ports.
"""
def getListeningPort(self, reactor, factory):
"""
Get a UNIX port from a reactor
"""
# self.mktemp() often returns a path which is too long to be used.
path = mktemp(suffix='.sock', dir='.')
return reactor.listenUNIX(path, factory)
def connectToListener(self, reactor, address, factory):
"""
Connect to a listening UNIX socket.
@param reactor: The reactor under test.
@type reactor: L{IReactorUNIX}
@param address: The listening's address.
@type address: L{UNIXAddress}
@param factory: The client factory.
@type factory: L{ClientFactory}
@return: The connector
"""
return reactor.connectUNIX(address.name, factory)
class UNIXPortTestsMixin(object):
requiredInterfaces = (IReactorUNIX,)
def getExpectedStartListeningLogMessage(self, port, factory):
"""
Get the message expected to be logged when a UNIX port starts listening.
"""
return "%s starting on %r" % (factory,
nativeString(port.getHost().name))
def getExpectedConnectionLostLogMsg(self, port):
"""
Get the expected connection lost message for a UNIX port
"""
return "(UNIX Port %s Closed)" % (nativeString(port.getHost().name),)
class UNIXPortTestsBuilder(ListenUNIXMixin, UNIXPortTestsMixin,
ReactorBuilder, ObjectModelIntegrationMixin,
StreamTransportTestsMixin):
"""
Tests for L{IReactorUNIX.listenUnix}
"""
class UNIXFDPortTestsBuilder(SocketUNIXMixin, UNIXPortTestsMixin,
ReactorBuilder, ObjectModelIntegrationMixin,
StreamTransportTestsMixin):
"""
Tests for L{IReactorUNIX.adoptStreamPort}
"""
class UNIXAdoptStreamConnectionTestsBuilder(WriteSequenceTestsMixin, ReactorBuilder):
requiredInterfaces = (IReactorFDSet, IReactorSocket, IReactorUNIX,)
def test_buildProtocolReturnsNone(self):
"""
{IReactorSocket.adoptStreamConnection} returns None if the given
factory's buildProtocol returns None.
"""
# Build reactor before anything else: allow self.buildReactor()
# to skip the test if any of the self.requiredInterfaces isn't
# provided by the reactor (example: Windows), preventing later
# failures unrelated to the test itself.
reactor = self.buildReactor()
from socket import socketpair
class NoneFactory(ServerFactory):
def buildProtocol(self, address):
return None
s1, s2 = socketpair(AF_UNIX, SOCK_STREAM)
s1.setblocking(False)
self.addCleanup(s1.close)
self.addCleanup(s2.close)
s1FD = s1.fileno()
factory = NoneFactory()
result = reactor.adoptStreamConnection(s1FD, AF_UNIX, factory)
self.assertIsNone(result)
def test_ServerAddressUNIX(self):
"""
Helper method to test UNIX server addresses.
"""
def connected(protocols):
client, server, port = protocols
try:
portPath = _coerceToFilesystemEncoding('', port.getHost().name)
self.assertEqual(
"<AccumulatingProtocol #%s on %s>" %
(server.transport.sessionno, portPath),
str(server.transport))
self.assertEqual(
"AccumulatingProtocol,%s,%s" %
(server.transport.sessionno, portPath),
server.transport.logstr)
peerAddress = server.factory.peerAddresses[0]
self.assertIsInstance(peerAddress, UNIXAddress)
finally:
# Be certain to drop the connection so the test completes.
server.transport.loseConnection()
reactor = self.buildReactor()
d = self.getConnectedClientAndServer(reactor, interface=None, addressFamily=None)
d.addCallback(connected)
self.runReactor(reactor)
def getConnectedClientAndServer(self, reactor, interface, addressFamily):
"""
Return a L{Deferred} firing with a L{MyClientFactory} and
L{MyServerFactory} connected pair, and the listening C{Port}. The
particularity is that the server protocol has been obtained after doing
a C{adoptStreamConnection} against the original server connection.
"""
firstServer = MyServerFactory()
firstServer.protocolConnectionMade = Deferred()
server = MyServerFactory()
server.protocolConnectionMade = Deferred()
server.protocolConnectionLost = Deferred()
client = MyClientFactory()
client.protocolConnectionMade = Deferred()
client.protocolConnectionLost = Deferred()
# self.mktemp() often returns a path which is too long to be used.
path = mktemp(suffix='.sock', dir='.')
port = reactor.listenUNIX(path, firstServer)
def firstServerConnected(proto):
reactor.removeReader(proto.transport)
reactor.removeWriter(proto.transport)
reactor.adoptStreamConnection(
proto.transport.fileno(), AF_UNIX, server)
firstServer.protocolConnectionMade.addCallback(firstServerConnected)
lostDeferred = gatherResults([client.protocolConnectionLost,
server.protocolConnectionLost])
def stop(result):
if reactor.running:
reactor.stop()
return result
lostDeferred.addBoth(stop)
deferred = Deferred()
deferred.addErrback(stop)
startDeferred = gatherResults([client.protocolConnectionMade,
server.protocolConnectionMade])
def start(protocols):
client, server = protocols
deferred.callback((client, server, port))
startDeferred.addCallback(start)
reactor.connectUNIX(port.getHost().name, client)
return deferred
globals().update(UNIXTestsBuilder.makeTestCaseClasses())
globals().update(UNIXDatagramTestsBuilder.makeTestCaseClasses())
globals().update(UNIXPortTestsBuilder.makeTestCaseClasses())
globals().update(UNIXFDPortTestsBuilder.makeTestCaseClasses())
globals().update(UNIXAdoptStreamConnectionTestsBuilder.makeTestCaseClasses())
class UnixClientTestsBuilder(ReactorBuilder, StreamClientTestsMixin):
"""
Define tests for L{IReactorUNIX.connectUNIX}.
"""
requiredInterfaces = (IReactorUNIX,)
_path = None
@property
def path(self):
"""
Return a path usable by C{connectUNIX} and C{listenUNIX}.
@return: A path instance, built with C{_abstractPath}.
"""
if self._path is None:
self._path = _abstractPath(self)
return self._path
def listen(self, reactor, factory):
"""
Start an UNIX server with the given C{factory}.
@param reactor: The reactor to create the UNIX port in.
@param factory: The server factory.
@return: A UNIX port instance.
"""
return reactor.listenUNIX(self.path, factory)
def connect(self, reactor, factory):
"""
Start an UNIX client with the given C{factory}.
@param reactor: The reactor to create the connection in.
@param factory: The client factory.
@return: A UNIX connector instance.
"""
return reactor.connectUNIX(self.path, factory)
globals().update(UnixClientTestsBuilder.makeTestCaseClasses())