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###
# Copyright (c) 2004, Jeremiah Fincher
# Copyright (c) 2010-2021, Valentin Lorentz
# 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 supybot.utils as utils
import supybot.ircdb as ircdb
import supybot.ircmsgs as ircmsgs
import supybot.ircutils as ircutils
import supybot.callbacks as callbacks
from supybot.i18n import PluginInternationalization, internationalizeDocstring
_ = PluginInternationalization('Protector')
class Protector(callbacks.Plugin):
"""Prevents users from doing things they are not supposed to do on a channel,
even if they have +o or +h."""
def isImmune(self, irc, msg):
if not ircutils.isUserHostmask(msg.prefix):
self.log.debug('%q is immune, it\'s a server.', msg)
return True # It's a server prefix.
if ircutils.strEqual(msg.nick, irc.nick):
self.log.debug('%q is immune, it\'s me.', msg)
return True # It's the bot itself.
if msg.nick in self.registryValue('immune', msg.channel, irc.network):
self.log.debug('%q is immune, it\'s configured to be immune.', msg)
return True
return False
def isOp(self, irc, channel, hostmask):
cap = ircdb.makeChannelCapability(channel, 'op')
if ircdb.checkCapability(hostmask, cap):
self.log.debug('%s is an op on %s, it has %s.',
hostmask, channel, cap)
return True
if ircutils.strEqual(hostmask, irc.prefix):
return True
return False
def isProtected(self, irc, channel, hostmask):
cap = ircdb.makeChannelCapability(channel, 'protected')
if ircdb.checkCapability(hostmask, cap):
self.log.debug('%s is protected on %s, it has %s.',
hostmask, channel, cap)
return True
if ircutils.strEqual(hostmask, irc.prefix):
return True
return False
def demote(self, irc, channel, nick):
irc.queueMsg(ircmsgs.deop(channel, nick))
def __call__(self, irc, msg):
def ignore(reason):
self.log.debug('Ignoring %q, %s.', msg, reason)
if not msg.args:
ignore('no msg.args')
elif not msg.channel:
ignore('not on a channel')
elif not self.registryValue('enable', msg.channel, irc.network):
ignore('supybot.plugins.Protector.enable is False.')
elif msg.channel not in irc.state.channels:
# One has to wonder how this would happen, but just in case...
ignore('bot isn\'t in channel')
elif irc.nick not in irc.state.channels[msg.channel].ops:
ignore('bot is not opped')
elif msg.nick not in irc.state.channels[msg.channel].users:
ignore('sender is not in channel (ChanServ, maybe?)')
elif msg.nick not in irc.state.channels[msg.channel].ops:
ignore('sender is not an op in channel (IRCOP, maybe?)')
elif self.isImmune(irc, msg):
ignore('sender is immune')
else:
super(Protector, self).__call__(irc, msg)
def doMode(self, irc, msg):
channel = msg.channel
chanOp = ircdb.makeChannelCapability(channel, 'op')
chanVoice = ircdb.makeChannelCapability(channel, 'voice')
chanHalfOp = ircdb.makeChannelCapability(channel, 'halfop')
if not ircdb.checkCapability(msg.prefix, chanOp):
irc.sendMsg(ircmsgs.deop(channel, msg.nick))
for (mode, value) in ircutils.separateModes(msg.args[1:]):
if not value:
continue
if ircutils.strEqual(value, msg.nick):
# We allow someone to mode themselves to oblivion.
continue
if irc.isNick(value):
hostmask = irc.state.nickToHostmask(value)
if mode == '+o':
if not self.isOp(irc, channel, hostmask):
irc.queueMsg(ircmsgs.deop(channel, value))
elif mode == '+h':
if not ircdb.checkCapability(hostmask, chanHalfOp):
irc.queueMsg(ircmsgs.dehalfop(channel, value))
elif mode == '+v':
if not ircdb.checkCapability(hostmask, chanVoice):
irc.queueMsg(ircmsgs.devoice(channel, value))
elif mode == '-o':
if ircdb.checkCapability(hostmask, chanOp):
irc.queueMsg(ircmsgs.op(channel, value))
elif mode == '-h':
if ircdb.checkCapability(hostmask, chanOp):
irc.queueMsg(ircmsgs.halfop(channel, value))
elif mode == '-v':
if ircdb.checkCapability(hostmask, chanOp):
irc.queueMsg(ircmsgs.voice(channel, value))
else:
assert ircutils.isUserHostmask(value)
# Handle bans.
def doKick(self, irc, msg):
channel = msg.channel
kicked = msg.args[1].split(',')
protected = []
for nick in kicked:
if ircutils.strEqual(nick, irc.nick):
return # Channel will handle the rejoin.
for nick in kicked:
hostmask = irc.state.nickToHostmask(nick)
if self.isProtected(irc, channel, hostmask):
self.log.info('%s was kicked from %s and is protected; '
'inviting back.', hostmask, channel)
hostmask = '%s!%s' % (nick, irc.state.nickToHostmask(nick))
protected.append(nick)
bans = []
for banmask in irc.state.channels[channel].bans:
if ircutils.hostmaskPatternEqual(banmask, hostmask):
bans.append(banmask)
irc.queueMsg(ircmsgs.unbans(channel, bans))
irc.queueMsg(ircmsgs.invite(nick, channel))
if not self.isOp(irc, channel, msg.prefix):
self.demote(irc, channel, msg.nick)
Class = Protector
# vim:set shiftwidth=4 softtabstop=4 expandtab textwidth=79:
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