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# -*- test-case-name: twisted.words.test.test_service -*-
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
A module that needs a better name.
Implements new cred things for words.
How does this thing work?
- Network connection on some port expecting to speak some protocol
- Protocol-specific authentication, resulting in some kind of credentials object
- twisted.cred.portal login using those credentials for the interface
IUser and with something implementing IChatClient as the mind
- successful login results in an IUser avatar the protocol can call
methods on, and state added to the realm such that the mind will have
methods called on it as is necessary
- protocol specific actions lead to calls onto the avatar; remote events
lead to calls onto the mind
- protocol specific hangup, realm is notified, user is removed from active
play, the end.
"""
from time import time, ctime
from zope.interface import implements
from twisted.words import iwords, ewords
from twisted.python.components import registerAdapter
from twisted.cred import portal, credentials, error as ecred
from twisted.spread import pb
from twisted.words.protocols import irc
from twisted.internet import defer, protocol
from twisted.python import log, failure, reflect
from twisted import copyright
class Group(object):
implements(iwords.IGroup)
def __init__(self, name):
self.name = name
self.users = {}
self.meta = {
"topic": "",
"topic_author": "",
}
def _ebUserCall(self, err, p):
return failure.Failure(Exception(p, err))
def _cbUserCall(self, results):
for (success, result) in results:
if not success:
user, err = result.value # XXX
self.remove(user, err.getErrorMessage())
def add(self, user):
assert iwords.IChatClient.providedBy(user), "%r is not a chat client" % (user,)
if user.name not in self.users:
additions = []
self.users[user.name] = user
for p in self.users.itervalues():
if p is not user:
d = defer.maybeDeferred(p.userJoined, self, user)
d.addErrback(self._ebUserCall, p=p)
additions.append(d)
defer.DeferredList(additions).addCallback(self._cbUserCall)
return defer.succeed(None)
def remove(self, user, reason=None):
assert reason is None or isinstance(reason, unicode)
try:
del self.users[user.name]
except KeyError:
pass
else:
removals = []
for p in self.users.itervalues():
if p is not user:
d = defer.maybeDeferred(p.userLeft, self, user, reason)
d.addErrback(self._ebUserCall, p=p)
removals.append(d)
defer.DeferredList(removals).addCallback(self._cbUserCall)
return defer.succeed(None)
def size(self):
return defer.succeed(len(self.users))
def receive(self, sender, recipient, message):
assert recipient is self
receives = []
for p in self.users.itervalues():
if p is not sender:
d = defer.maybeDeferred(p.receive, sender, self, message)
d.addErrback(self._ebUserCall, p=p)
receives.append(d)
defer.DeferredList(receives).addCallback(self._cbUserCall)
return defer.succeed(None)
def setMetadata(self, meta):
self.meta = meta
sets = []
for p in self.users.itervalues():
d = defer.maybeDeferred(p.groupMetaUpdate, self, meta)
d.addErrback(self._ebUserCall, p=p)
sets.append(d)
defer.DeferredList(sets).addCallback(self._cbUserCall)
return defer.succeed(None)
def iterusers(self):
# XXX Deferred?
return iter(self.users.values())
class User(object):
implements(iwords.IUser)
realm = None
mind = None
def __init__(self, name):
self.name = name
self.groups = []
self.lastMessage = time()
def loggedIn(self, realm, mind):
self.realm = realm
self.mind = mind
self.signOn = time()
def join(self, group):
def cbJoin(result):
self.groups.append(group)
return result
return group.add(self.mind).addCallback(cbJoin)
def leave(self, group, reason=None):
def cbLeave(result):
self.groups.remove(group)
return result
return group.remove(self.mind, reason).addCallback(cbLeave)
def send(self, recipient, message):
self.lastMessage = time()
return recipient.receive(self.mind, recipient, message)
def itergroups(self):
return iter(self.groups)
def logout(self):
for g in self.groups[:]:
self.leave(g)
NICKSERV = 'NickServ!NickServ@services'
class IRCUser(irc.IRC):
"""
Protocol instance representing an IRC user connected to the server.
"""
implements(iwords.IChatClient)
# A list of IGroups in which I am participating
groups = None
# A no-argument callable I should invoke when I go away
logout = None
# An IUser we use to interact with the chat service
avatar = None
# To whence I belong
realm = None
# How to handle unicode (TODO: Make this customizable on a per-user basis)
encoding = 'utf-8'
# Twisted callbacks
def connectionMade(self):
self.irc_PRIVMSG = self.irc_NICKSERV_PRIVMSG
self.realm = self.factory.realm
self.hostname = self.realm.name
def connectionLost(self, reason):
if self.logout is not None:
self.logout()
self.avatar = None
# Make sendMessage a bit more useful to us
def sendMessage(self, command, *parameter_list, **kw):
if 'prefix' not in kw:
kw['prefix'] = self.hostname
if 'to' not in kw:
kw['to'] = self.name.encode(self.encoding)
arglist = [self, command, kw['to']] + list(parameter_list)
irc.IRC.sendMessage(*arglist, **kw)
# IChatClient implementation
def userJoined(self, group, user):
self.join(
"%s!%s@%s" % (user.name, user.name, self.hostname),
'#' + group.name)
def userLeft(self, group, user, reason=None):
assert reason is None or isinstance(reason, unicode)
self.part(
"%s!%s@%s" % (user.name, user.name, self.hostname),
'#' + group.name,
(reason or u"leaving").encode(self.encoding, 'replace'))
def receive(self, sender, recipient, message):
#>> :[email protected] PRIVMSG glyph_ :hello
# omg???????????
if iwords.IGroup.providedBy(recipient):
recipientName = '#' + recipient.name
else:
recipientName = recipient.name
text = message.get('text', '')
for L in text.splitlines():
self.privmsg(
'%s!%s@%s' % (sender.name, sender.name, self.hostname),
recipientName,
L)
def groupMetaUpdate(self, group, meta):
if 'topic' in meta:
topic = meta['topic']
author = meta.get('topic_author', '')
self.topic(
self.name,
'#' + group.name,
topic,
'%s!%s@%s' % (author, author, self.hostname)
)
# irc.IRC callbacks - starting with login related stuff.
nickname = None
password = None
def irc_PASS(self, prefix, params):
"""Password message -- Register a password.
Parameters:
[REQUIRED]
Note that IRC requires the client send this *before* NICK
and USER.
"""
self.password = params[-1]
def irc_NICK(self, prefix, params):
"""Nick message -- Set your nickname.
Parameters:
[REQUIRED]
"""
try:
nickname = params[0].decode(self.encoding)
except UnicodeDecodeError:
self.privmsg(
NICKSERV,
nickname,
'Your nickname is cannot be decoded. Please use ASCII or UTF-8.')
self.transport.loseConnection()
return
self.nickname = nickname
self.name = nickname
for code, text in self._motdMessages:
self.sendMessage(code, text % self.factory._serverInfo)
if self.password is None:
self.privmsg(
NICKSERV,
nickname,
'Password?')
else:
password = self.password
self.password = None
self.logInAs(nickname, password)
def irc_USER(self, prefix, params):
"""User message -- Set your realname.
Parameters:
"""
# Note: who gives a crap about this? The IUser has the real
# information we care about. Save it anyway, I guess, just
# for fun.
self.realname = params[-1]
def irc_NICKSERV_PRIVMSG(self, prefix, params):
"""Send a (private) message.
Parameters:
"""
target = params[0]
password = params[-1]
if self.nickname is None:
# XXX Send an error response here
self.transport.loseConnection()
elif target.lower() != "nickserv":
self.privmsg(
NICKSERV,
self.nickname,
"Denied. Please send me (NickServ) your password.")
else:
nickname = self.nickname
self.nickname = None
self.logInAs(nickname, password)
def logInAs(self, nickname, password):
d = self.factory.portal.login(
credentials.UsernamePassword(nickname, password),
self,
iwords.IUser)
d.addCallbacks(self._cbLogin, self._ebLogin, errbackArgs=(nickname,))
_welcomeMessages = [
(irc.RPL_WELCOME,
":connected to Twisted IRC"),
(irc.RPL_YOURHOST,
":Your host is %(serviceName)s, running version %(serviceVersion)s"),
(irc.RPL_CREATED,
":This server was created on %(creationDate)s"),
# "Bummer. This server returned a worthless 004 numeric.
# I'll have to guess at all the values"
# -- epic
(irc.RPL_MYINFO,
# w and n are the currently supported channel and user modes
# -- specify this better
"%(serviceName)s %(serviceVersion)s w n")
]
_motdMessages = [
(irc.RPL_MOTDSTART,
":- %(serviceName)s Message of the Day - "),
(irc.RPL_ENDOFMOTD,
":End of /MOTD command.")
]
def _cbLogin(self, (iface, avatar, logout)):
assert iface is iwords.IUser, "Realm is buggy, got %r" % (iface,)
# Let them send messages to the world
del self.irc_PRIVMSG
self.avatar = avatar
self.logout = logout
for code, text in self._welcomeMessages:
self.sendMessage(code, text % self.factory._serverInfo)
def _ebLogin(self, err, nickname):
if err.check(ewords.AlreadyLoggedIn):
self.privmsg(
NICKSERV,
nickname,
"Already logged in. No pod people allowed!")
elif err.check(ecred.UnauthorizedLogin):
self.privmsg(
NICKSERV,
nickname,
"Login failed. Goodbye.")
else:
log.msg("Unhandled error during login:")
log.err(err)
self.privmsg(
NICKSERV,
nickname,
"Server error during login. Sorry.")
self.transport.loseConnection()
# Great, now that's out of the way, here's some of the interesting
# bits
def irc_PING(self, prefix, params):
"""Ping message
Parameters: [ ]
"""
if self.realm is not None:
self.sendMessage('PONG', self.hostname)
def irc_QUIT(self, prefix, params):
"""Quit
Parameters: [ ]
"""
self.transport.loseConnection()
def _channelMode(self, group, modes=None, *args):
if modes:
self.sendMessage(
irc.ERR_UNKNOWNMODE,
":Unknown MODE flag.")
else:
self.channelMode(self.name, '#' + group.name, '+')
def _userMode(self, user, modes=None):
if modes:
self.sendMessage(
irc.ERR_UNKNOWNMODE,
":Unknown MODE flag.")
elif user is self.avatar:
self.sendMessage(
irc.RPL_UMODEIS,
"+")
else:
self.sendMessage(
irc.ERR_USERSDONTMATCH,
":You can't look at someone else's modes.")
def irc_MODE(self, prefix, params):
"""User mode message
Parameters:
*( ( "+" / "-" ) *( "i" / "w" / "o" / "O" / "r" ) )
"""
try:
channelOrUser = params[0].decode(self.encoding)
except UnicodeDecodeError:
self.sendMessage(
irc.ERR_NOSUCHNICK, params[0],
":No such nickname (could not decode your unicode!)")
return
if channelOrUser.startswith('#'):
def ebGroup(err):
err.trap(ewords.NoSuchGroup)
self.sendMessage(
irc.ERR_NOSUCHCHANNEL, params[0],
":That channel doesn't exist.")
d = self.realm.lookupGroup(channelOrUser[1:])
d.addCallbacks(
self._channelMode,
ebGroup,
callbackArgs=tuple(params[1:]))
else:
def ebUser(err):
self.sendMessage(
irc.ERR_NOSUCHNICK,
":No such nickname.")
d = self.realm.lookupUser(channelOrUser)
d.addCallbacks(
self._userMode,
ebUser,
callbackArgs=tuple(params[1:]))
def irc_USERHOST(self, prefix, params):
"""Userhost message
Parameters: *( SPACE )
[Optional]
"""
pass
def irc_PRIVMSG(self, prefix, params):
"""Send a (private) message.
Parameters:
"""
try:
targetName = params[0].decode(self.encoding)
except UnicodeDecodeError:
self.sendMessage(
irc.ERR_NOSUCHNICK, params[0],
":No such nick/channel (could not decode your unicode!)")
return
messageText = params[-1]
if targetName.startswith('#'):
target = self.realm.lookupGroup(targetName[1:])
else:
target = self.realm.lookupUser(targetName).addCallback(lambda user: user.mind)
def cbTarget(targ):
if targ is not None:
return self.avatar.send(targ, {"text": messageText})
def ebTarget(err):
self.sendMessage(
irc.ERR_NOSUCHNICK, targetName,
":No such nick/channel.")
target.addCallbacks(cbTarget, ebTarget)
def irc_JOIN(self, prefix, params):
"""Join message
Parameters: ( *( "," ) [ *( "," ) ] )
"""
try:
groupName = params[0].decode(self.encoding)
except UnicodeDecodeError:
self.sendMessage(
irc.ERR_NOSUCHCHANNEL, params[0],
":No such channel (could not decode your unicode!)")
return
if groupName.startswith('#'):
groupName = groupName[1:]
def cbGroup(group):
def cbJoin(ign):
self.userJoined(group, self)
self.names(
self.name,
'#' + group.name,
[user.name for user in group.iterusers()])
self._sendTopic(group)
return self.avatar.join(group).addCallback(cbJoin)
def ebGroup(err):
self.sendMessage(
irc.ERR_NOSUCHCHANNEL, '#' + groupName,
":No such channel.")
self.realm.getGroup(groupName).addCallbacks(cbGroup, ebGroup)
def irc_PART(self, prefix, params):
"""Part message
Parameters: *( "," ) [ ]
"""
try:
groupName = params[0].decode(self.encoding)
except UnicodeDecodeError:
self.sendMessage(
irc.ERR_NOTONCHANNEL, params[0],
":Could not decode your unicode!")
return
if groupName.startswith('#'):
groupName = groupName[1:]
if len(params) > 1:
reason = params[1].decode('utf-8')
else:
reason = None
def cbGroup(group):
def cbLeave(result):
self.userLeft(group, self, reason)
return self.avatar.leave(group, reason).addCallback(cbLeave)
def ebGroup(err):
err.trap(ewords.NoSuchGroup)
self.sendMessage(
irc.ERR_NOTONCHANNEL,
'#' + groupName,
":" + err.getErrorMessage())
self.realm.lookupGroup(groupName).addCallbacks(cbGroup, ebGroup)
def irc_NAMES(self, prefix, params):
"""Names message
Parameters: [ *( "," ) [ ] ]
"""
#<< NAMES #python
#>> :benford.openprojects.net 353 glyph = #python :Orban ... @glyph ... Zymurgy skreech
#>> :benford.openprojects.net 366 glyph #python :End of /NAMES list.
try:
channel = params[-1].decode(self.encoding)
except UnicodeDecodeError:
self.sendMessage(
irc.ERR_NOSUCHCHANNEL, params[-1],
":No such channel (could not decode your unicode!)")
return
if channel.startswith('#'):
channel = channel[1:]
def cbGroup(group):
self.names(
self.name,
'#' + group.name,
[user.name for user in group.iterusers()])
def ebGroup(err):
err.trap(ewords.NoSuchGroup)
# No group? Fine, no names!
self.names(
self.name,
'#' + channel,
[])
self.realm.lookupGroup(channel).addCallbacks(cbGroup, ebGroup)
def irc_TOPIC(self, prefix, params):
"""Topic message
Parameters: [ ]
"""
try:
channel = params[0].decode(self.encoding)
except UnicodeDecodeError:
self.sendMessage(
irc.ERR_NOSUCHCHANNEL,
":That channel doesn't exist (could not decode your unicode!)")
return
if channel.startswith('#'):
channel = channel[1:]
if len(params) > 1:
self._setTopic(channel, params[1])
else:
self._getTopic(channel)
def _sendTopic(self, group):
"""
Send the topic of the given group to this user, if it has one.
"""
topic = group.meta.get("topic")
if topic:
author = group.meta.get("topic_author") or ""
date = group.meta.get("topic_date", 0)
self.topic(self.name, '#' + group.name, topic)
self.topicAuthor(self.name, '#' + group.name, author, date)
def _getTopic(self, channel):
#<< TOPIC #python
#>> :benford.openprojects.net 332 glyph #python : I really did. I sprained all my toes.
#>> :benford.openprojects.net 333 glyph #python itamar|nyc 994713482
def ebGroup(err):
err.trap(ewords.NoSuchGroup)
self.sendMessage(
irc.ERR_NOSUCHCHANNEL, '=', channel,
":That channel doesn't exist.")
self.realm.lookupGroup(channel).addCallbacks(self._sendTopic, ebGroup)
def _setTopic(self, channel, topic):
#<< TOPIC #divunal :foo
#>> :[email protected] TOPIC #divunal :foo
def cbGroup(group):
newMeta = group.meta.copy()
newMeta['topic'] = topic
newMeta['topic_author'] = self.name
newMeta['topic_date'] = int(time())
def ebSet(err):
self.sendMessage(
irc.ERR_CHANOPRIVSNEEDED,
"#" + group.name,
":You need to be a channel operator to do that.")
return group.setMetadata(newMeta).addErrback(ebSet)
def ebGroup(err):
err.trap(ewords.NoSuchGroup)
self.sendMessage(
irc.ERR_NOSUCHCHANNEL, '=', channel,
":That channel doesn't exist.")
self.realm.lookupGroup(channel).addCallbacks(cbGroup, ebGroup)
def list(self, channels):
"""Send a group of LIST response lines
@type channel: C{list} of C{(str, int, str)}
@param channel: Information about the channels being sent:
their name, the number of participants, and their topic.
"""
for (name, size, topic) in channels:
self.sendMessage(irc.RPL_LIST, name, str(size), ":" + topic)
self.sendMessage(irc.RPL_LISTEND, ":End of /LIST")
def irc_LIST(self, prefix, params):
"""List query
Return information about the indicated channels, or about all
channels if none are specified.
Parameters: [ *( "," ) [ ] ]
"""
#<< list #python
#>> :orwell.freenode.net 321 exarkun Channel :Users Name
#>> :orwell.freenode.net 322 exarkun #python 358 :The Python programming language
#>> :orwell.freenode.net 323 exarkun :End of /LIST
if params:
# Return information about indicated channels
try:
channels = params[0].decode(self.encoding).split(',')
except UnicodeDecodeError:
self.sendMessage(
irc.ERR_NOSUCHCHANNEL, params[0],
":No such channel (could not decode your unicode!)")
return
groups = []
for ch in channels:
if ch.startswith('#'):
ch = ch[1:]
groups.append(self.realm.lookupGroup(ch))
groups = defer.DeferredList(groups, consumeErrors=True)
groups.addCallback(lambda gs: [r for (s, r) in gs if s])
else:
# Return information about all channels
groups = self.realm.itergroups()
def cbGroups(groups):
def gotSize(size, group):
return group.name, size, group.meta.get('topic')
d = defer.DeferredList([
group.size().addCallback(gotSize, group) for group in groups])
d.addCallback(lambda results: self.list([r for (s, r) in results if s]))
return d
groups.addCallback(cbGroups)
def _channelWho(self, group):
self.who(self.name, '#' + group.name,
[(m.name, self.hostname, self.realm.name, m.name, "H", 0, m.name) for m in group.iterusers()])
def _userWho(self, user):
self.sendMessage(irc.RPL_ENDOFWHO,
":User /WHO not implemented")
def irc_WHO(self, prefix, params):
"""Who query
Parameters: [ [ "o" ] ]
"""
#<< who #python
#>> :x.opn 352 glyph #python aquarius pc-62-31-193-114-du.blueyonder.co.uk y.opn Aquarius H :3 Aquarius
# ...
#>> :x.opn 352 glyph #python foobar europa.tranquility.net z.opn skreech H :0 skreech
#>> :x.opn 315 glyph #python :End of /WHO list.
### also
#<< who glyph
#>> :x.opn 352 glyph #python glyph adsl-64-123-27-108.dsl.austtx.swbell.net x.opn glyph H :0 glyph
#>> :x.opn 315 glyph glyph :End of /WHO list.
if not params:
self.sendMessage(irc.RPL_ENDOFWHO, ":/WHO not supported.")
return
try:
channelOrUser = params[0].decode(self.encoding)
except UnicodeDecodeError:
self.sendMessage(
irc.RPL_ENDOFWHO, params[0],
":End of /WHO list (could not decode your unicode!)")
return
if channelOrUser.startswith('#'):
def ebGroup(err):
err.trap(ewords.NoSuchGroup)
self.sendMessage(
irc.RPL_ENDOFWHO, channelOrUser,
":End of /WHO list.")
d = self.realm.lookupGroup(channelOrUser[1:])
d.addCallbacks(self._channelWho, ebGroup)
else:
def ebUser(err):
err.trap(ewords.NoSuchUser)
self.sendMessage(
irc.RPL_ENDOFWHO, channelOrUser,
":End of /WHO list.")
d = self.realm.lookupUser(channelOrUser)
d.addCallbacks(self._userWho, ebUser)
def irc_WHOIS(self, prefix, params):
"""Whois query
Parameters: [ ] *( "," )
"""
def cbUser(user):
self.whois(
self.name,
user.name, user.name, self.realm.name,
user.name, self.realm.name, 'Hi mom!', False,
int(time() - user.lastMessage), user.signOn,
['#' + group.name for group in user.itergroups()])
def ebUser(err):
err.trap(ewords.NoSuchUser)
self.sendMessage(
irc.ERR_NOSUCHNICK,
params[0],
":No such nick/channel")
try:
user = params[0].decode(self.encoding)
except UnicodeDecodeError:
self.sendMessage(
irc.ERR_NOSUCHNICK,
params[0],
":No such nick/channel")
return
self.realm.lookupUser(user).addCallbacks(cbUser, ebUser)
# Unsupported commands, here for legacy compatibility
def irc_OPER(self, prefix, params):
"""Oper message
Parameters:
"""
self.sendMessage(irc.ERR_NOOPERHOST, ":O-lines not applicable")
class IRCFactory(protocol.ServerFactory):
"""
IRC server that creates instances of the L{IRCUser} protocol.
@ivar _serverInfo: A dictionary mapping:
"serviceName" to the name of the server,
"serviceVersion" to the copyright version,
"creationDate" to the time that the server was started.
"""
protocol = IRCUser
def __init__(self, realm, portal):
self.realm = realm
self.portal = portal
self._serverInfo = {
"serviceName": self.realm.name,
"serviceVersion": copyright.version,
"creationDate": ctime()
}
class PBMind(pb.Referenceable):
def __init__(self):
pass
def jellyFor(self, jellier):
return reflect.qual(PBMind), jellier.invoker.registerReference(self)
def remote_userJoined(self, user, group):
pass
def remote_userLeft(self, user, group, reason):
pass
def remote_receive(self, sender, recipient, message):
pass
def remote_groupMetaUpdate(self, group, meta):
pass
class PBMindReference(pb.RemoteReference):
implements(iwords.IChatClient)
def receive(self, sender, recipient, message):
if iwords.IGroup.providedBy(recipient):
rec = PBGroup(self.realm, self.avatar, recipient)
else:
rec = PBUser(self.realm, self.avatar, recipient)
return self.callRemote(
'receive',
PBUser(self.realm, self.avatar, sender),
rec,
message)
def groupMetaUpdate(self, group, meta):
return self.callRemote(
'groupMetaUpdate',
PBGroup(self.realm, self.avatar, group),
meta)
def userJoined(self, group, user):
return self.callRemote(
'userJoined',
PBGroup(self.realm, self.avatar, group),
PBUser(self.realm, self.avatar, user))
def userLeft(self, group, user, reason=None):
assert reason is None or isinstance(reason, unicode)
return self.callRemote(
'userLeft',
PBGroup(self.realm, self.avatar, group),
PBUser(self.realm, self.avatar, user),
reason)
pb.setUnjellyableForClass(PBMind, PBMindReference)
class PBGroup(pb.Referenceable):
def __init__(self, realm, avatar, group):
self.realm = realm
self.avatar = avatar
self.group = group
def processUniqueID(self):
return hash((self.realm.name, self.avatar.name, self.group.name))
def jellyFor(self, jellier):
return reflect.qual(self.__class__), self.group.name.encode('utf-8'), jellier.invoker.registerReference(self)
def remote_leave(self, reason=None):
return self.avatar.leave(self.group, reason)
def remote_send(self, message):
return self.avatar.send(self.group, message)
class PBGroupReference(pb.RemoteReference):
implements(iwords.IGroup)
def unjellyFor(self, unjellier, unjellyList):
clsName, name, ref = unjellyList
self.name = name.decode('utf-8')
return pb.RemoteReference.unjellyFor(self, unjellier, [clsName, ref])
def leave(self, reason=None):
return self.callRemote("leave", reason)
def send(self, message):
return self.callRemote("send", message)
pb.setUnjellyableForClass(PBGroup, PBGroupReference)
class PBUser(pb.Referenceable):
def __init__(self, realm, avatar, user):
self.realm = realm
self.avatar = avatar
self.user = user
def processUniqueID(self):
return hash((self.realm.name, self.avatar.name, self.user.name))
class ChatAvatar(pb.Referenceable):
implements(iwords.IChatClient)
def __init__(self, avatar):
self.avatar = avatar
def jellyFor(self, jellier):
return reflect.qual(self.__class__), jellier.invoker.registerReference(self)
def remote_join(self, groupName):
assert isinstance(groupName, unicode)
def cbGroup(group):
def cbJoin(ignored):
return PBGroup(self.avatar.realm, self.avatar, group)
d = self.avatar.join(group)
d.addCallback(cbJoin)
return d
d = self.avatar.realm.getGroup(groupName)
d.addCallback(cbGroup)
return d
registerAdapter(ChatAvatar, iwords.IUser, pb.IPerspective)
class AvatarReference(pb.RemoteReference):
def join(self, groupName):
return self.callRemote('join', groupName)
def quit(self):
d = defer.Deferred()
self.broker.notifyOnDisconnect(lambda: d.callback(None))
self.broker.transport.loseConnection()
return d
pb.setUnjellyableForClass(ChatAvatar, AvatarReference)
class WordsRealm(object):
implements(portal.IRealm, iwords.IChatService)
_encoding = 'utf-8'
def __init__(self, name):
self.name = name
def userFactory(self, name):
return User(name)
def groupFactory(self, name):
return Group(name)
def logoutFactory(self, avatar, facet):
def logout():
# XXX Deferred support here
getattr(facet, 'logout', lambda: None)()
avatar.realm = avatar.mind = None
return logout
def requestAvatar(self, avatarId, mind, *interfaces):
if isinstance(avatarId, str):
avatarId = avatarId.decode(self._encoding)
def gotAvatar(avatar):
if avatar.realm is not None:
raise ewords.AlreadyLoggedIn()
for iface in interfaces:
facet = iface(avatar, None)
if facet is not None:
avatar.loggedIn(self, mind)
mind.name = avatarId
mind.realm = self
mind.avatar = avatar
return iface, facet, self.logoutFactory(avatar, facet)
raise NotImplementedError(self, interfaces)
return self.getUser(avatarId).addCallback(gotAvatar)
# IChatService, mostly.
createGroupOnRequest = False
createUserOnRequest = True
def lookupUser(self, name):
raise NotImplementedError
def lookupGroup(self, group):
raise NotImplementedError
def addUser(self, user):
"""Add the given user to this service.
This is an internal method intented to be overridden by
L{WordsRealm} subclasses, not called by external code.
@type user: L{IUser}
@rtype: L{twisted.internet.defer.Deferred}
@return: A Deferred which fires with C{None} when the user is
added, or which fails with
L{twisted.words.ewords.DuplicateUser} if a user with the
same name exists already.
"""
raise NotImplementedError
def addGroup(self, group):
"""Add the given group to this service.
@type group: L{IGroup}
@rtype: L{twisted.internet.defer.Deferred}
@return: A Deferred which fires with C{None} when the group is
added, or which fails with
L{twisted.words.ewords.DuplicateGroup} if a group with the
same name exists already.
"""
raise NotImplementedError
def getGroup(self, name):
assert isinstance(name, unicode)
if self.createGroupOnRequest:
def ebGroup(err):
err.trap(ewords.DuplicateGroup)
return self.lookupGroup(name)
return self.createGroup(name).addErrback(ebGroup)
return self.lookupGroup(name)
def getUser(self, name):
assert isinstance(name, unicode)
if self.createUserOnRequest:
def ebUser(err):
err.trap(ewords.DuplicateUser)
return self.lookupUser(name)
return self.createUser(name).addErrback(ebUser)
return self.lookupUser(name)
def createUser(self, name):
assert isinstance(name, unicode)
def cbLookup(user):
return failure.Failure(ewords.DuplicateUser(name))
def ebLookup(err):
err.trap(ewords.NoSuchUser)
return self.userFactory(name)
name = name.lower()
d = self.lookupUser(name)
d.addCallbacks(cbLookup, ebLookup)
d.addCallback(self.addUser)
return d
def createGroup(self, name):
assert isinstance(name, unicode)
def cbLookup(group):
return failure.Failure(ewords.DuplicateGroup(name))
def ebLookup(err):
err.trap(ewords.NoSuchGroup)
return self.groupFactory(name)
name = name.lower()
d = self.lookupGroup(name)
d.addCallbacks(cbLookup, ebLookup)
d.addCallback(self.addGroup)
return d
class InMemoryWordsRealm(WordsRealm):
def __init__(self, *a, **kw):
super(InMemoryWordsRealm, self).__init__(*a, **kw)
self.users = {}
self.groups = {}
def itergroups(self):
return defer.succeed(self.groups.itervalues())
def addUser(self, user):
if user.name in self.users:
return defer.fail(failure.Failure(ewords.DuplicateUser()))
self.users[user.name] = user
return defer.succeed(user)
def addGroup(self, group):
if group.name in self.groups:
return defer.fail(failure.Failure(ewords.DuplicateGroup()))
self.groups[group.name] = group
return defer.succeed(group)
def lookupUser(self, name):
assert isinstance(name, unicode)
name = name.lower()
try:
user = self.users[name]
except KeyError:
return defer.fail(failure.Failure(ewords.NoSuchUser(name)))
else:
return defer.succeed(user)
def lookupGroup(self, name):
assert isinstance(name, unicode)
name = name.lower()
try:
group = self.groups[name]
except KeyError:
return defer.fail(failure.Failure(ewords.NoSuchGroup(name)))
else:
return defer.succeed(group)
__all__ = [
'Group', 'User',
'WordsRealm', 'InMemoryWordsRealm',
]