https://github.com/ProgVal/Limnoria
Tip revision: f85395d8b1b078b97b0f6b232a4e41a83d12fc1d authored by Valentin Lorentz on 23 May 2015, 23:08:54 UTC
Revert ban description-related commits.
Revert ban description-related commits.
Tip revision: f85395d
irclib.py
###
# 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
try:
from ecdsa import SigningKey, BadDigestError
ecdsa = True
except ImportError:
ecdsa = False
from . import conf, ircdb, ircmsgs, ircutils, log, utils, world
from .utils.str import rsplit
from .utils.iter import chain
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,
capabilities_ack=None, capabilities_nak=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.capabilities_ack = capabilities_ack or set()
self.capabilities_nak = capabilities_nak or set()
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:
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()
self.monitoring = 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.sasl_ecdsa_key = \
conf.supybot.networks.get(self.network).sasl.ecdsa_key()
# TODO Find a better way to fix this
if hasattr(self.sasl_ecdsa_key, 'decode'):
self.sasl_ecdsa_key = self.sasl_ecdsa_key.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
if self.password:
log.info('%s: Queuing PASS command, not logging the password.',
self.network)
self.sendMsg(ircmsgs.password(self.password))
log.debug('%s: Sending NICK command, nick is %s.',
self.network, self.nick)
self.sendMsg(ircmsgs.nick(self.nick))
log.debug('%s: Sending USER command, ident is %s, user is %s.',
self.network, self.ident, self.user)
self.sendMsg(ircmsgs.user(self.ident, self.user))
self.sasl = None
if ecdsa and self.sasl_username and self.sasl_ecdsa_key:
self.sasl = 'ecdsa-nist256p-challenge'
elif (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'
# Notes:
# * not sending caps at once, because the server has no granularity
# in telling between ACK and NAK
# * using sendMsg instead of queueMsg because these messages cannot
# be throttled.
for cap in ('account-notify', 'extended-join', 'multi-prefix',
'metadata-notify', 'account-tag'):
self.sendMsg(ircmsgs.IrcMsg(command='CAP', args=('REQ', cap)))
if self.sasl:
self.sendMsg(ircmsgs.IrcMsg(command='CAP', args=('REQ', 'sasl')))
else:
self.sendMsg(ircmsgs.IrcMsg(command='CAP', args=('END',)))
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 == 'ecdsa-nist256p-challenge':
authstring = base64.b64encode(
self.sasl_username.encode('utf-8')).decode('utf-8')
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.sendMsg(ircmsgs.IrcMsg(command='AUTHENTICATE', args=(authstring,)))
elif (len(msg.args) == 1 and msg.args[0] != '+' and
self.sasl == 'ecdsa-nist256p-challenge'):
try:
private_key = SigningKey.from_pem(open(self.sasl_ecdsa_key).
read())
authstring = base64.b64encode(
private_key.sign(base64.b64decode(msg.args[0].encode()))).decode('utf-8')
except (BadDigestError, OSError, ValueError) as e:
authstring = "*"
self.sendMsg(ircmsgs.IrcMsg(command='AUTHENTICATE', args=(authstring,)))
def doCap(self, msg):
if len(msg.args) != 3:
return
for cap in msg.args[2].split(' '):
if msg.args[1] == 'ACK':
log.info('%s: Server acknowledged capability %r',
self.network, cap)
self.state.capabilities_ack.add(cap)
if cap == 'sasl':
self.sendMsg(ircmsgs.IrcMsg(
command='AUTHENTICATE',
args=(self.sasl.upper(),)))
elif msg.args[1] == 'NAK':
self.state.capabilities_nak.add(cap)
log.warning('%s: Server refused capability %r',
self.network, cap)
if cap == 'sasl':
self.sendMsg(ircmsgs.IrcMsg(
command='CAP',
args=('END',)))
def monitor(self, targets):
"""Increment a counter of how many callbacks monitor each target;
and send a MONITOR + to the server if the target is not yet
monitored."""
if isinstance(targets, str):
targets = [targets]
not_yet_monitored = set()
for target in targets:
if target in self.monitoring:
self.monitoring[target] += 1
else:
not_yet_monitored.add(target)
self.monitoring[target] = 1
if not_yet_monitored:
self.queueMsg(ircmsgs.monitor('+', not_yet_monitored))
return not_yet_monitored
def unmonitor(self, targets):
"""Decrements a counter of how many callbacks monitor each target;
and send a MONITOR - to the server if the counter drops to 0."""
if isinstance(targets, str):
targets = [targets]
should_be_unmonitored = set()
for target in targets:
self.monitoring[target] -= 1
if self.monitoring[target] == 0:
del self.monitoring[target]
should_be_unmonitored.add(target)
if should_be_unmonitored:
self.queueMsg(ircmsgs.monitor('-', should_be_unmonitored))
return should_be_unmonitored
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 != 'plain' and self.sasl_username and
self.sasl_password):
log.info('%s: SASL %s failed, trying PLAIN.', self.network,
self.sasl.upper())
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 %s: %s %s. Trying %s.',
msg.command, self.nick, problem, newNick)
self.sendMsg(ircmsgs.nick(newNick))
def do437(self, msg):
self.do43x(msg, 'is temporarily unavailable')
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 '<irclib.Irc object for %s>' % self.network
# vim:set shiftwidth=4 softtabstop=4 expandtab textwidth=79:
