### # Copyright (c) 2002-2005 Jeremiah Fincher # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: # # * Redistributions of source code must retain the above copyright notice, # this list of conditions, and the following disclaimer. # * Redistributions in binary form must reproduce the above copyright notice, # this list of conditions, and the following disclaimer in the # documentation and/or other materials provided with the distribution. # * Neither the name of the author of this software nor the name of # contributors to this software may be used to endorse or promote products # derived from this software without specific prior written consent. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. ### import re import copy import time import random import base64 from . import conf, ircdb, ircmsgs, ircutils, log, utils, world from .utils.str import rsplit from .utils.iter import imap, chain, cycle from .utils.structures import queue, smallqueue, RingBuffer ### # The base class for a callback to be registered with an Irc object. Shows # the required interface for callbacks -- name(), # inFilter(irc, msg), outFilter(irc, msg), and __call__(irc, msg) [used so as # to make functions used as callbacks conceivable, and so if refactoring ever # changes the nature of the callbacks from classes to functions, syntactical # changes elsewhere won't be required.] ### class IrcCommandDispatcher(object): """Base class for classes that must dispatch on a command.""" def dispatchCommand(self, command): """Given a string 'command', dispatches to doCommand.""" return getattr(self, 'do' + command.capitalize(), None) class IrcCallback(IrcCommandDispatcher): """Base class for standard callbacks. Callbacks derived from this class should have methods of the form "doCommand" -- doPrivmsg, doNick, do433, etc. These will be called on matching messages. """ callAfter = () callBefore = () __metaclass__ = log.MetaFirewall __firewalled__ = {'die': None, 'reset': None, '__call__': None, 'inFilter': lambda self, irc, msg: msg, 'outFilter': lambda self, irc, msg: msg, 'name': lambda self: self.__class__.__name__, 'callPrecedence': lambda self, irc: ([], []), } def __init__(self, *args, **kwargs): #object doesn't take any args, so the buck stops here. #super(IrcCallback, self).__init__(*args, **kwargs) pass def __repr__(self): return '<%s %s %s>' % \ (self.__class__.__name__, self.name(), object.__repr__(self)) def name(self): """Returns the name of the callback.""" return self.__class__.__name__ def callPrecedence(self, irc): """Returns a pair of (callbacks to call before me, callbacks to call after me)""" after = [] before = [] for name in self.callBefore: cb = irc.getCallback(name) if cb is not None: after.append(cb) for name in self.callAfter: cb = irc.getCallback(name) if cb is not None: before.append(cb) assert self not in after, '%s was in its own after.' % self.name() assert self not in before, '%s was in its own before.' % self.name() return (before, after) def inFilter(self, irc, msg): """Used for filtering/modifying messages as they're entering. ircmsgs.IrcMsg objects are immutable, so this method is expected to return another ircmsgs.IrcMsg object. Obviously the same IrcMsg can be returned. """ return msg def outFilter(self, irc, msg): """Used for filtering/modifying messages as they're leaving. As with inFilter, an IrcMsg is returned. """ return msg def __call__(self, irc, msg): """Used for handling each message.""" method = self.dispatchCommand(msg.command) if method is not None: method(irc, msg) def reset(self): """Resets the callback. Called when reconnecting to the server.""" pass def die(self): """Makes the callback die. Called when the parent Irc object dies.""" pass ### # Basic queue for IRC messages. It doesn't presently (but should at some # later point) reorder messages based on priority or penalty calculations. ### _high = frozenset(['MODE', 'KICK', 'PONG', 'NICK', 'PASS', 'CAPAB']) _low = frozenset(['PRIVMSG', 'PING', 'WHO', 'NOTICE', 'JOIN']) class IrcMsgQueue(object): """Class for a queue of IrcMsgs. Eventually, it should be smart. Probably smarter than it is now, though it's gotten quite a bit smarter than it originally was. A method to "score" methods, and a heapq to maintain a priority queue of the messages would be the ideal way to do intelligent queuing. As it stands, however, we simply keep track of 'high priority' messages, 'low priority' messages, and normal messages, and just make sure to return the 'high priority' ones before the normal ones before the 'low priority' ones. """ __slots__ = ('msgs', 'highpriority', 'normal', 'lowpriority', 'lastJoin') def __init__(self, iterable=()): self.reset() for msg in iterable: self.enqueue(msg) def reset(self): """Clears the queue.""" self.lastJoin = 0 self.highpriority = smallqueue() self.normal = smallqueue() self.lowpriority = smallqueue() def enqueue(self, msg): """Enqueues a given message.""" if msg in self and \ conf.supybot.protocols.irc.queuing.duplicates(): s = str(msg).strip() log.info('Not adding message %q to queue, already added.', s) return False else: if msg.command in _high: self.highpriority.enqueue(msg) elif msg.command in _low: self.lowpriority.enqueue(msg) else: self.normal.enqueue(msg) return True def dequeue(self): """Dequeues a given message.""" msg = None if self.highpriority: msg = self.highpriority.dequeue() elif self.normal: msg = self.normal.dequeue() elif self.lowpriority: msg = self.lowpriority.dequeue() if msg.command == 'JOIN': limit = conf.supybot.protocols.irc.queuing.rateLimit.join() now = time.time() if self.lastJoin + limit <= now: self.lastJoin = now else: self.lowpriority.enqueue(msg) msg = None return msg def __contains__(self, msg): return msg in self.normal or \ msg in self.lowpriority or \ msg in self.highpriority def __bool__(self): return bool(self.highpriority or self.normal or self.lowpriority) __nonzero__ = __bool__ def __len__(self): return len(self.highpriority)+len(self.lowpriority)+len(self.normal) def __repr__(self): name = self.__class__.__name__ return '%s(%r)' % (name, list(chain(self.highpriority, self.normal, self.lowpriority))) __str__ = __repr__ ### # Maintains the state of IRC connection -- the most recent messages, the # status of various modes (especially ops/halfops/voices) in channels, etc. ### class ChannelState(utils.python.Object): __slots__ = ('users', 'ops', 'halfops', 'bans', 'voices', 'topic', 'modes', 'created') def __init__(self): self.topic = '' self.created = 0 self.ops = ircutils.IrcSet() self.bans = ircutils.IrcSet() self.users = ircutils.IrcSet() self.voices = ircutils.IrcSet() self.halfops = ircutils.IrcSet() self.modes = {} def isOp(self, nick): return nick in self.ops def isOpPlus(self, nick): return nick in self.ops def isVoice(self, nick): return nick in self.voices def isVoicePlus(self, nick): return nick in self.voices or nick in self.halfops or nick in self.ops def isHalfop(self, nick): return nick in self.halfops def isHalfopPlus(self, nick): return nick in self.halfops or nick in self.ops def addUser(self, user): "Adds a given user to the ChannelState. Power prefixes are handled." nick = user.lstrip('@%+&~!') if not nick: return # & is used to denote protected users in UnrealIRCd # ~ is used to denote channel owner in UnrealIRCd # ! is used to denote protected users in UltimateIRCd while user and user[0] in '@%+&~!': (marker, user) = (user[0], user[1:]) assert user, 'Looks like my caller is passing chars, not nicks.' if marker in '@&~!': self.ops.add(nick) elif marker == '%': self.halfops.add(nick) elif marker == '+': self.voices.add(nick) self.users.add(nick) def replaceUser(self, oldNick, newNick): """Changes the user oldNick to newNick; used for NICK changes.""" # Note that this doesn't have to have the sigil (@%+) that users # have to have for addUser; it just changes the name of the user # without changing any of their categories. for s in (self.users, self.ops, self.halfops, self.voices): if oldNick in s: s.remove(oldNick) s.add(newNick) def removeUser(self, user): """Removes a given user from the channel.""" self.users.discard(user) self.ops.discard(user) self.halfops.discard(user) self.voices.discard(user) def setMode(self, mode, value=None): assert mode not in 'ovhbeq' self.modes[mode] = value def unsetMode(self, mode): assert mode not in 'ovhbeq' if mode in self.modes: del self.modes[mode] def doMode(self, msg): def getSet(c): if c == 'o': Set = self.ops elif c == 'v': Set = self.voices elif c == 'h': Set = self.halfops elif c == 'b': Set = self.bans else: # We don't care yet, so we'll just return an empty set. Set = set() return Set for (mode, value) in ircutils.separateModes(msg.args[1:]): (action, modeChar) = mode if modeChar in 'ovhbeq': # We don't handle e or q yet. Set = getSet(modeChar) if action == '-': Set.discard(value) elif action == '+': Set.add(value) else: if action == '+': self.setMode(modeChar, value) else: assert action == '-' self.unsetMode(modeChar) def __getstate__(self): return [getattr(self, name) for name in self.__slots__] def __setstate__(self, t): for (name, value) in zip(self.__slots__, t): setattr(self, name, value) def __eq__(self, other): ret = True for name in self.__slots__: ret = ret and getattr(self, name) == getattr(other, name) return ret class IrcState(IrcCommandDispatcher): """Maintains state of the Irc connection. Should also become smarter. """ __metaclass__ = log.MetaFirewall __firewalled__ = {'addMsg': None} def __init__(self, history=None, supported=None, nicksToHostmasks=None, channels=None): if history is None: history = RingBuffer(conf.supybot.protocols.irc.maxHistoryLength()) if supported is None: supported = utils.InsensitivePreservingDict() if nicksToHostmasks is None: nicksToHostmasks = ircutils.IrcDict() if channels is None: channels = ircutils.IrcDict() self.ircd = None self.supported = supported self.history = history self.channels = channels self.nicksToHostmasks = nicksToHostmasks def reset(self): """Resets the state to normal, unconnected state.""" self.history.reset() self.channels.clear() self.supported.clear() self.nicksToHostmasks.clear() self.history.resize(conf.supybot.protocols.irc.maxHistoryLength()) def __reduce__(self): return (self.__class__, (self.history, self.supported, self.nicksToHostmasks, self.channels)) def __eq__(self, other): return self.history == other.history and \ self.channels == other.channels and \ self.supported == other.supported and \ self.nicksToHostmasks == other.nicksToHostmasks def __ne__(self, other): return not self == other def copy(self): ret = self.__class__() ret.history = copy.deepcopy(self.history) ret.nicksToHostmasks = copy.deepcopy(self.nicksToHostmasks) ret.channels = copy.deepcopy(self.channels) return ret def addMsg(self, irc, msg): """Updates the state based on the irc object and the message.""" self.history.append(msg) if ircutils.isUserHostmask(msg.prefix) and not msg.command == 'NICK': self.nicksToHostmasks[msg.nick] = msg.prefix method = self.dispatchCommand(msg.command) if method is not None: method(irc, msg) def getTopic(self, channel): """Returns the topic for a given channel.""" return self.channels[channel].topic def nickToHostmask(self, nick): """Returns the hostmask for a given nick.""" return self.nicksToHostmasks[nick] def do004(self, irc, msg): """Handles parsing the 004 reply Supported user and channel modes are cached""" # msg.args = [nick, server, ircd-version, umodes, modes, # modes that require arguments? (non-standard)] self.ircd = msg.args[2] self.supported['umodes'] = frozenset(msg.args[3]) self.supported['chanmodes'] = frozenset(msg.args[4]) _005converters = utils.InsensitivePreservingDict({ 'modes': int, 'keylen': int, 'nicklen': int, 'userlen': int, 'hostlen': int, 'kicklen': int, 'awaylen': int, 'silence': int, 'topiclen': int, 'channellen': int, 'maxtargets': int, 'maxnicklen': int, 'maxchannels': int, 'watch': int, # DynastyNet, EnterTheGame }) def _prefixParser(s): if ')' in s: (left, right) = s.split(')') assert left[0] == '(', 'Odd PREFIX in 005: %s' % s left = left[1:] assert len(left) == len(right), 'Odd PREFIX in 005: %s' % s return dict(list(zip(left, right))) else: return dict(list(zip('ovh', s))) _005converters['prefix'] = _prefixParser del _prefixParser def _maxlistParser(s): modes = '' limits = [] pairs = s.split(',') for pair in pairs: (mode, limit) = pair.split(':', 1) modes += mode limits += (int(limit),) * len(mode) return dict(list(zip(modes, limits))) _005converters['maxlist'] = _maxlistParser del _maxlistParser def _maxbansParser(s): # IRCd using a MAXLIST style string (IRCNet) if ':' in s: modes = '' limits = [] pairs = s.split(',') for pair in pairs: (mode, limit) = pair.split(':', 1) modes += mode limits += (int(limit),) * len(mode) d = dict(list(zip(modes, limits))) assert 'b' in d return d['b'] else: return int(s) _005converters['maxbans'] = _maxbansParser del _maxbansParser def do005(self, irc, msg): for arg in msg.args[1:-1]: # 0 is nick, -1 is "are supported" if '=' in arg: (name, value) = arg.split('=', 1) converter = self._005converters.get(name, lambda x: x) try: self.supported[name] = converter(value) except Exception as e: log.exception('Uncaught exception in 005 converter:') log.error('Name: %s, Converter: %s', name, converter) else: self.supported[arg] = None def do352(self, irc, msg): # WHO reply. (nick, user, host) = (msg.args[5], msg.args[2], msg.args[3]) hostmask = '%s!%s@%s' % (nick, user, host) self.nicksToHostmasks[nick] = hostmask def do354(self, irc, msg): # WHOX reply. if len(msg.args) != 6 or msg.args[1] != '1': return (__, ___, user, host, nick, ___) = msg.args hostmask = '%s!%s@%s' % (nick, user, host) self.nicksToHostmasks[nick] = hostmask def do353(self, irc, msg): # NAMES reply. (__, type, channel, names) = msg.args if channel not in self.channels: self.channels[channel] = ChannelState() c = self.channels[channel] for name in names.split(): c.addUser(name) if type == '@': c.modes['s'] = None def doJoin(self, irc, msg): for channel in msg.args[0].split(','): if channel in self.channels: self.channels[channel].addUser(msg.nick) elif msg.nick: # It must be us. chan = ChannelState() chan.addUser(msg.nick) self.channels[channel] = chan # I don't know why this assert was here. #assert msg.nick == irc.nick, msg def do367(self, irc, msg): # Example: # :server 367 user #chan some!random@user evil!channel@op 1356276459 try: state = self.channels[msg.args[1]] except KeyError: # We have been kicked of the channel before the server replied to # the MODE +b command. pass else: state.bans.add(msg.args[2]) def doMode(self, irc, msg): channel = msg.args[0] if ircutils.isChannel(channel): # There can be user modes, as well. try: chan = self.channels[channel] except KeyError: chan = ChannelState() self.channels[channel] = chan chan.doMode(msg) def do324(self, irc, msg): channel = msg.args[1] try: chan = self.channels[channel] except KeyError: chan = ChannelState() self.channels[channel] = chan for (mode, value) in ircutils.separateModes(msg.args[2:]): modeChar = mode[1] if mode[0] == '+' and mode[1] not in 'ovh': chan.setMode(modeChar, value) elif mode[0] == '-' and mode[1] not in 'ovh': chan.unsetMode(modeChar) def do329(self, irc, msg): # This is the last part of an empty mode. channel = msg.args[1] try: chan = self.channels[channel] except KeyError: chan = ChannelState() self.channels[channel] = chan chan.created = int(msg.args[2]) def doPart(self, irc, msg): for channel in msg.args[0].split(','): try: chan = self.channels[channel] except KeyError: continue if ircutils.strEqual(msg.nick, irc.nick): del self.channels[channel] else: chan.removeUser(msg.nick) def doKick(self, irc, msg): (channel, users) = msg.args[:2] chan = self.channels[channel] for user in users.split(','): if ircutils.strEqual(user, irc.nick): del self.channels[channel] return else: chan.removeUser(user) def doQuit(self, irc, msg): for channel in self.channels.itervalues(): channel.removeUser(msg.nick) if msg.nick in self.nicksToHostmasks: # If we're quitting, it may not be. del self.nicksToHostmasks[msg.nick] def doTopic(self, irc, msg): if len(msg.args) == 1: return # Empty TOPIC for information. Does not affect state. try: chan = self.channels[msg.args[0]] chan.topic = msg.args[1] except KeyError: pass # We don't have to be in a channel to send a TOPIC. def do332(self, irc, msg): chan = self.channels[msg.args[1]] chan.topic = msg.args[2] def doNick(self, irc, msg): newNick = msg.args[0] oldNick = msg.nick try: if msg.user and msg.host: # Nick messages being handed out from the bot itself won't # have the necessary prefix to make a hostmask. newHostmask = ircutils.joinHostmask(newNick,msg.user,msg.host) self.nicksToHostmasks[newNick] = newHostmask del self.nicksToHostmasks[oldNick] except KeyError: pass for channel in self.channels.itervalues(): channel.replaceUser(oldNick, newNick) ### # The basic class for handling a connection to an IRC server. Accepts # callbacks of the IrcCallback interface. Public attributes include 'driver', # 'queue', and 'state', in addition to the standard nick/user/ident attributes. ### _callbacks = [] class Irc(IrcCommandDispatcher): """The base class for an IRC connection. Handles PING commands already. """ __metaclass__ = log.MetaFirewall __firewalled__ = {'die': None, 'feedMsg': None, 'takeMsg': None,} _nickSetters = set(['001', '002', '003', '004', '250', '251', '252', '254', '255', '265', '266', '372', '375', '376', '333', '353', '332', '366', '005']) # We specifically want these callbacks to be common between all Ircs, # that's why we don't do the normal None default with a check. def __init__(self, network, callbacks=_callbacks): self.zombie = False world.ircs.append(self) self.network = network self.startedAt = time.time() self.callbacks = callbacks self.state = IrcState() self.queue = IrcMsgQueue() self.fastqueue = smallqueue() self.driver = None # The driver should set this later. self._setNonResettingVariables() self._queueConnectMessages() self.startedSync = ircutils.IrcDict() def isChannel(self, s): """Helper function to check whether a given string is a channel on the network this Irc object is connected to.""" kw = {} if 'chantypes' in self.state.supported: kw['chantypes'] = self.state.supported['chantypes'] if 'channellen' in self.state.supported: kw['channellen'] = self.state.supported['channellen'] return ircutils.isChannel(s, **kw) def isNick(self, s): kw = {} if 'nicklen' in self.state.supported: kw['nicklen'] = self.state.supported['nicklen'] return ircutils.isNick(s, **kw) # This *isn't* threadsafe! def addCallback(self, callback): """Adds a callback to the callbacks list. :param callback: A callback object :type callback: supybot.irclib.IrcCallback """ assert not self.getCallback(callback.name()) self.callbacks.append(callback) # This is the new list we're building, which will be tsorted. cbs = [] # The vertices are self.callbacks itself. Now we make the edges. edges = set() for cb in self.callbacks: (before, after) = cb.callPrecedence(self) assert cb not in after, 'cb was in its own after.' assert cb not in before, 'cb was in its own before.' for otherCb in before: edges.add((otherCb, cb)) for otherCb in after: edges.add((cb, otherCb)) def getFirsts(): firsts = set(self.callbacks) - set(cbs) for (before, after) in edges: firsts.discard(after) return firsts firsts = getFirsts() while firsts: # Then we add these to our list of cbs, and remove all edges that # originate with these cbs. for cb in firsts: cbs.append(cb) edgesToRemove = [] for edge in edges: if edge[0] is cb: edgesToRemove.append(edge) for edge in edgesToRemove: edges.remove(edge) firsts = getFirsts() assert len(cbs) == len(self.callbacks), \ 'cbs: %s, self.callbacks: %s' % (cbs, self.callbacks) self.callbacks[:] = cbs def getCallback(self, name): """Gets a given callback by name.""" name = name.lower() for callback in self.callbacks: if callback.name().lower() == name: return callback else: return None def removeCallback(self, name): """Removes a callback from the callback list.""" name = name.lower() def nameMatches(cb): return cb.name().lower() == name (bad, good) = utils.iter.partition(nameMatches, self.callbacks) self.callbacks[:] = good return bad def queueMsg(self, msg): """Queues a message to be sent to the server.""" if not self.zombie: return self.queue.enqueue(msg) else: log.warning('Refusing to queue %r; %s is a zombie.', msg, self) return False def sendMsg(self, msg): """Queues a message to be sent to the server *immediately*""" if not self.zombie: self.fastqueue.enqueue(msg) else: log.warning('Refusing to send %r; %s is a zombie.', msg, self) def takeMsg(self): """Called by the IrcDriver; takes a message to be sent.""" if not self.callbacks: log.critical('No callbacks in %s.', self) now = time.time() msg = None if self.fastqueue: msg = self.fastqueue.dequeue() elif self.queue: if now-self.lastTake <= conf.supybot.protocols.irc.throttleTime(): log.debug('Irc.takeMsg throttling.') else: self.lastTake = now msg = self.queue.dequeue() elif self.afterConnect and \ conf.supybot.protocols.irc.ping() and \ now > self.lastping + conf.supybot.protocols.irc.ping.interval(): if self.outstandingPing: s = 'Ping sent at %s not replied to.' % \ log.timestamp(self.lastping) log.warning(s) self.feedMsg(ircmsgs.error(s)) self.driver.reconnect() elif not self.zombie: self.lastping = now now = str(int(now)) self.outstandingPing = True self.queueMsg(ircmsgs.ping(now)) if msg: for callback in reversed(self.callbacks): msg = callback.outFilter(self, msg) if msg is None: log.debug('%s.outFilter returned None.', callback.name()) return self.takeMsg() world.debugFlush() if len(str(msg)) > 512: # Yes, this violates the contract, but at this point it doesn't # matter. That's why we gotta go munging in private attributes # # I'm changing this to a log.debug to fix a possible loop in # the LogToIrc plugin. Since users can't do anything about # this issue, there's no fundamental reason to make it a # warning. log.debug('Truncating %r, message is too long.', msg) msg._str = msg._str[:500] + '\r\n' msg._len = len(str(msg)) # I don't think we should do this. Why should it matter? If it's # something important, then the server will send it back to us, # and if it's just a privmsg/notice/etc., we don't care. # On second thought, we need this for testing. if world.testing: self.state.addMsg(self, msg) log.debug('Outgoing message (%s): %s', self.network, str(msg).rstrip('\r\n')) return msg elif self.zombie: # We kill the driver here so it doesn't continue to try to # take messages from us. self.driver.die() self._reallyDie() else: return None _numericErrorCommandRe = re.compile(r'^[45][0-9][0-9]$') def feedMsg(self, msg): """Called by the IrcDriver; feeds a message received.""" msg.tag('receivedBy', self) msg.tag('receivedOn', self.network) msg.tag('receivedAt', time.time()) if msg.args and self.isChannel(msg.args[0]): channel = msg.args[0] else: channel = None preInFilter = str(msg).rstrip('\r\n') log.debug('Incoming message (%s): %s', self.network, preInFilter) # Yeah, so this is odd. Some networks (oftc) seem to give us certain # messages with our nick instead of our prefix. We'll fix that here. if msg.prefix == self.nick: log.debug('Got one of those odd nick-instead-of-prefix msgs.') msg = ircmsgs.IrcMsg(prefix=self.prefix, msg=msg) # This catches cases where we know our own nick (from sending it to the # server) but we don't yet know our prefix. if msg.nick == self.nick and self.prefix != msg.prefix: self.prefix = msg.prefix # This keeps our nick and server attributes updated. if msg.command in self._nickSetters: if msg.args[0] != self.nick: self.nick = msg.args[0] log.debug('Updating nick attribute to %s.', self.nick) if msg.prefix != self.server: self.server = msg.prefix log.debug('Updating server attribute to %s.', self.server) # Dispatch to specific handlers for commands. method = self.dispatchCommand(msg.command) if method is not None: method(msg) elif self._numericErrorCommandRe.search(msg.command): log.error('Unhandled error message from server: %r' % msg) # Now update the IrcState object. try: self.state.addMsg(self, msg) except: log.exception('Exception in update of IrcState object:') # Now call the callbacks. world.debugFlush() for callback in self.callbacks: try: m = callback.inFilter(self, msg) if not m: log.debug('%s.inFilter returned None', callback.name()) return msg = m except: log.exception('Uncaught exception in inFilter:') world.debugFlush() postInFilter = str(msg).rstrip('\r\n') if postInFilter != preInFilter: log.debug('Incoming message (post-inFilter): %s', postInFilter) for callback in self.callbacks: try: if callback is not None: callback(self, msg) except: log.exception('Uncaught exception in callback:') world.debugFlush() def die(self): """Makes the Irc object *promise* to die -- but it won't die (of its own volition) until all its queues are clear. Isn't that cool?""" self.zombie = True if not self.afterConnect: self._reallyDie() # This is useless because it's in world.ircs, so it won't be deleted until # the program exits. Just figured you might want to know. #def __del__(self): # self._reallyDie() def reset(self): """Resets the Irc object. Called when the driver reconnects.""" self._setNonResettingVariables() self.state.reset() self.queue.reset() self.fastqueue.reset() self.startedSync.clear() for callback in self.callbacks: callback.reset() self._queueConnectMessages() def _setNonResettingVariables(self): # Configuration stuff. def get_value(name): return getattr(conf.supybot.networks.get(self.network), name)() or \ getattr(conf.supybot, name)() self.nick = get_value('nick') self.user = get_value('user') self.ident = get_value('ident') self.alternateNicks = conf.supybot.nick.alternates()[:] self.password = conf.supybot.networks.get(self.network).password() self.sasl_username = \ conf.supybot.networks.get(self.network).sasl.username() # TODO Find a better way to fix this if hasattr(self.sasl_username, 'decode'): self.sasl_username = self.sasl_username.decode('utf-8') self.sasl_password = \ conf.supybot.networks.get(self.network).sasl.password() # TODO Find a better way to fix this if hasattr(self.sasl_password, 'decode'): self.sasl_password = self.sasl_password.decode('utf-8') self.prefix = '%s!%s@%s' % (self.nick, self.ident, 'unset.domain') # The rest. self.lastTake = 0 self.server = 'unset' self.afterConnect = False self.startedAt = time.time() self.lastping = time.time() self.outstandingPing = False def _queueConnectMessages(self): if self.zombie: self.driver.die() self._reallyDie() return self.sasl = None if (conf.supybot.networks.get(self.network).certfile() or conf.supybot.protocols.irc.certfile()): self.sasl = 'external' elif self.sasl_username and self.sasl_password: self.sasl = 'plain' if self.sasl: self.queueMsg(ircmsgs.IrcMsg(command='CAP', args=('REQ', 'sasl'))) self.queueMsg(ircmsgs.IrcMsg(command='CAP', args=('REQ', 'account-notify'))) self.queueMsg(ircmsgs.IrcMsg(command='CAP', args=('REQ', 'extended-join'))) if not self.sasl: self.queueMsg(ircmsgs.IrcMsg(command='CAP', args=('END',))) if self.password: log.info('%s: Queuing PASS command, not logging the password.', self.network) self.queueMsg(ircmsgs.password(self.password)) log.debug('%s: Queuing NICK command, nick is %s.', self.network, self.nick) self.queueMsg(ircmsgs.nick(self.nick)) log.debug('%s: Queuing USER command, ident is %s, user is %s.', self.network, self.ident, self.user) self.queueMsg(ircmsgs.user(self.ident, self.user)) def doAuthenticate(self, msg): if len(msg.args) == 1 and msg.args[0] == '+': log.info('%s: Authenticating using SASL.', self.network) if self.sasl == 'external': authstring = '+' elif self.sasl == 'plain': authstring = base64.b64encode('\0'.join([ self.sasl_username, self.sasl_username, self.sasl_password ]).encode('utf-8')).decode('utf-8') self.queueMsg(ircmsgs.IrcMsg(command='AUTHENTICATE', args=(authstring,))) def doCap(self, msg): if len(msg.args) == 3: for cap in msg.args[2].split(' '): if msg.args[1] == 'ACK': log.info('%s: Server acknowledged capability %r', self.network, cap) if cap == 'sasl': self.queueMsg(ircmsgs.IrcMsg( command='AUTHENTICATE', args=(self.sasl.upper(),))) elif msg.args[1] == 'NAK': log.warning('%s: Server refused capability %r', self.network, cap) def do903(self, msg): log.info('%s: SASL authentication successful', self.network) self.queueMsg(ircmsgs.IrcMsg(command='CAP', args=('END',))) def do904(self, msg): if (self.sasl == 'external' and self.sasl_username and self.sasl_password): log.info('%s: SASL EXTERNAL failed, trying PLAIN.', self.network) self.sasl = 'plain' self.queueMsg(ircmsgs.IrcMsg( command='AUTHENTICATE', args=(self.sasl.upper(),))) else: log.warning('%s: SASL authentication failed', self.network) self.queueMsg(ircmsgs.IrcMsg(command='CAP', args=('END',))) def do905(self, msg): log.warning('%s: SASL authentication failed because the username or ' 'password is too long.', self.network) self.queueMsg(ircmsgs.IrcMsg(command='CAP', args=('END',))) def do906(self, msg): log.warning('%s: SASL authentication aborted', self.network) self.queueMsg(ircmsgs.IrcMsg(command='CAP', args=('END',))) def do907(self, msg): log.warning('%s: Attempted SASL authentication when we were already ' 'authenticated.', self.network) self.queueMsg(ircmsgs.IrcMsg(command='CAP', args=('END',))) def do908(self, msg): log.info('%s: Supported SASL mechanisms: %s', self.network, msg.args[1]) def _getNextNick(self): if self.alternateNicks: nick = self.alternateNicks.pop(0) if '%s' in nick: network_nick = conf.supybot.networks.get(self.network).nick() if network_nick == '': nick %= conf.supybot.nick() else: nick %= network_nick return nick else: nick = conf.supybot.nick() network_nick = conf.supybot.networks.get(self.network).nick() if network_nick != '': nick = network_nick ret = nick L = list(nick) while len(L) <= 3: L.append('`') while ircutils.strEqual(ret, nick): L[random.randrange(len(L))] = utils.iter.choice('0123456789') ret = ''.join(L) return ret def do002(self, msg): """Logs the ircd version.""" (beginning, version) = rsplit(msg.args[-1], maxsplit=1) log.info('Server %s has version %s', self.server, version) def doPing(self, msg): """Handles PING messages.""" self.sendMsg(ircmsgs.pong(msg.args[0])) def doPong(self, msg): """Handles PONG messages.""" self.outstandingPing = False def do376(self, msg): log.info('Got end of MOTD from %s', self.server) self.afterConnect = True # Let's reset nicks in case we had to use a weird one. self.alternateNicks = conf.supybot.nick.alternates()[:] umodes = conf.supybot.networks.get(self.network).umodes() if umodes == '': umodes = conf.supybot.protocols.irc.umodes() supported = self.state.supported.get('umodes') if supported: acceptedchars = supported.union('+-') umodes = ''.join([m for m in umodes if m in acceptedchars]) if umodes: log.info('Sending user modes to %s: %s', self.network, umodes) self.sendMsg(ircmsgs.mode(self.nick, umodes)) do377 = do422 = do376 def do43x(self, msg, problem): if not self.afterConnect: newNick = self._getNextNick() assert newNick != self.nick log.info('Got 433: %s %s. Trying %s.',self.nick, problem, newNick) self.sendMsg(ircmsgs.nick(newNick)) def do433(self, msg): self.do43x(msg, 'is in use') def do432(self, msg): self.do43x(msg, 'is not a valid nickname') def doJoin(self, msg): if msg.nick == self.nick: channel = msg.args[0] self.queueMsg(ircmsgs.who(channel, args=('%tuhna,1',))) # Ends with 315. self.queueMsg(ircmsgs.mode(channel)) # Ends with 329. for channel in msg.args[0].split(','): self.queueMsg(ircmsgs.mode(channel, '+b')) self.startedSync[channel] = time.time() def do315(self, msg): channel = msg.args[1] if channel in self.startedSync: now = time.time() started = self.startedSync.pop(channel) elapsed = now - started log.info('Join to %s on %s synced in %.2f seconds.', channel, self.network, elapsed) def doError(self, msg): """Handles ERROR messages.""" log.warning('Error message from %s: %s', self.network, msg.args[0]) if not self.zombie: if msg.args[0].startswith('Closing Link'): self.driver.reconnect() elif 'too fast' in msg.args[0]: # Connecting too fast. self.driver.reconnect(wait=True) def doNick(self, msg): """Handles NICK messages.""" if msg.nick == self.nick: newNick = msg.args[0] self.nick = newNick (nick, user, domain) = ircutils.splitHostmask(msg.prefix) self.prefix = ircutils.joinHostmask(self.nick, user, domain) elif conf.supybot.followIdentificationThroughNickChanges(): # We use elif here because this means it's someone else's nick # change, not our own. try: id = ircdb.users.getUserId(msg.prefix) u = ircdb.users.getUser(id) except KeyError: return if u.auth: (_, user, host) = ircutils.splitHostmask(msg.prefix) newhostmask = ircutils.joinHostmask(msg.args[0], user, host) for (i, (when, authmask)) in enumerate(u.auth[:]): if ircutils.strEqual(msg.prefix, authmask): log.info('Following identification for %s: %s -> %s', u.name, authmask, newhostmask) u.auth[i] = (u.auth[i][0], newhostmask) ircdb.users.setUser(u) def _reallyDie(self): """Makes the Irc object die. Dead.""" log.info('Irc object for %s dying.', self.network) # XXX This hasattr should be removed, I'm just putting it here because # we're so close to a release. After 0.80.0 we should remove this # and fix whatever AttributeErrors arise in the drivers themselves. if self.driver is not None and hasattr(self.driver, 'die'): self.driver.die() if self in world.ircs: world.ircs.remove(self) # Only kill the callbacks if we're the last Irc. if not world.ircs: for cb in self.callbacks: cb.die() # If we shared our list of callbacks, this ensures that # cb.die() is only called once for each callback. It's # not really necessary since we already check to make sure # we're the only Irc object, but a little robustitude never # hurt anybody. log.debug('Last Irc, clearing callbacks.') self.callbacks[:] = [] else: log.warning('Irc object killed twice: %s', utils.stackTrace()) def __hash__(self): return id(self) def __eq__(self, other): # We check isinstance here, so that if some proxy object (like those # defined in callbacks.py) has overridden __eq__, it takes precedence. if isinstance(other, self.__class__): return id(self) == id(other) else: return other.__eq__(self) def __ne__(self, other): return not (self == other) def __str__(self): return 'Irc object for %s' % self.network def __repr__(self): return '' % self.network # vim:set shiftwidth=4 softtabstop=4 expandtab textwidth=79: