mirror of
https://github.com/Mikaela/Limnoria.git
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593 lines
19 KiB
Python
593 lines
19 KiB
Python
#!/usr/bin/env python
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###
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# Copyright (c) 2002, Jeremiah Fincher
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions, and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions, and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the author of this software nor the name of
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# contributors to this software may be used to endorse or promote products
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# derived from this software without specific prior written consent.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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###
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from fix import *
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import os
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import sets
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import time
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import atexit
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import string
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import conf
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import debug
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import world
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import ircutils
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def fromChannelCapability(capability):
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assert isChannelCapability(capability)
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return capability.split('.', 1)
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def isChannelCapability(capability):
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if '.' in capability:
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(channel, capability) = capability.split('.', 1)
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return ircutils.isChannel(channel)
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else:
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return False
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def makeChannelCapability(channel, capability):
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return '%s.%s' % (channel, capability)
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def isAntiCapability(capability):
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if isChannelCapability(capability):
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(_, capability) = fromChannelCapability(capability)
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return capability[0] == '!'
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def makeAntiCapability(capability):
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if '.' in capability:
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(channel, capability) = fromChannelCapability(capability)
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return '%s.!%s' % (channel, capability)
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else:
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return '!' + capability
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def unAntiCapability(capability):
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assert isAntiCapability(capability)
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if isChannelCapability(capability):
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(channel, capability) = fromChannelCapability(capability)
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return '.'.join((channel, capability[1:]))
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else:
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return capability[1:]
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def invertCapability(capability):
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if isAntiCapability(capability):
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return unAntiCapability(capability)
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else:
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return makeAntiCapability(capability)
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_normal = string.maketrans('\r\n', ' ')
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def normalize(s):
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return s.translate(_normal)
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class CapabilitySet(sets.Set):
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def __init__(self, capabilities=()):
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sets.Set.__init__(self)
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for capability in capabilities:
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self.add(capability)
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def add(self, capability):
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capability = ircutils.toLower(capability)
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inverted = invertCapability(capability)
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if sets.Set.__contains__(self, inverted):
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sets.Set.remove(self, inverted)
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sets.Set.add(self, capability)
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def remove(self, capability):
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capability = ircutils.toLower(capability)
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sets.Set.remove(self, capability)
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def __contains__(self, capability):
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capability = ircutils.toLower(capability)
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if sets.Set.__contains__(self, capability):
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return True
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if sets.Set.__contains__(self, invertCapability(capability)):
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return True
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else:
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return False
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def check(self, capability):
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capability = ircutils.toLower(capability)
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if sets.Set.__contains__(self, capability):
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return True
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elif sets.Set.__contains__(self, invertCapability(capability)):
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return False
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else:
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raise KeyError, capability
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def repr(self):
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return '%s([%r])' % (self.__class__.__name__, ', '.join(self))
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class UserCapabilitySet(CapabilitySet):
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def __contains__(self, capability):
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capability = ircutils.toLower(capability)
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if CapabilitySet.__contains__(self, 'owner'):
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return True
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else:
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return CapabilitySet.__contains__(self, capability)
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def check(self, capability):
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capability = ircutils.toLower(capability)
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if capability == 'owner':
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if CapabilitySet.__contains__(self, 'owner'):
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return True
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else:
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return False
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if 'owner' in self:
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if isAntiCapability(capability):
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return False
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else:
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return True
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else:
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return CapabilitySet.check(self, capability)
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def add(self, capability):
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capability = ircutils.toLower(capability)
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assert capability != '!owner', '"!owner" disallowed.'
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CapabilitySet.add(self, capability)
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class IrcUser(object):
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"""This class holds the capabilities and authentications for a user.
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"""
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def __init__(self, ignore=False, password='', auth=None,
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capabilities=(), hostmasks=None):
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self.auth = auth # The (time, hostmask) a user authenticated under.
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self.ignore = ignore # A boolean deciding if the person is ignored.
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self.password = password # password (plaintext? hashed?)
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self.capabilities = UserCapabilitySet()
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for capability in capabilities:
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self.capabilities.add(capability)
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if hostmasks is None:
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self.hostmasks = [] # A list of hostmasks used for recognition
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else:
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self.hostmasks = hostmasks
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def __repr__(self):
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return '%s(ignore=%s, auth=%r, password=%r, '\
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'capabilities=%r, hostmasks=%r)\n' %\
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(self.__class__.__name__, self.ignore, self.auth,
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self.password, self.capabilities, self.hostmasks)
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def addCapability(self, capability):
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self.capabilities.add(capability)
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def removeCapability(self, capability):
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if capability in self.capabilities:
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self.capabilities.remove(capability)
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def checkCapability(self, capability):
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if self.ignore:
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if isAntiCapability(capability):
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return True
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else:
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return False
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else:
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return self.capabilities.check(capability)
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def setPassword(self, password):
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self.password = password
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def checkPassword(self, password):
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return (self.password == password)
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def checkHostmask(self, hostmask):
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if self.auth and (hostmask == self.auth[1]):
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return True
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for pat in self.hostmasks:
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if ircutils.hostmaskPatternEqual(pat, hostmask):
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return True
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return False
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def addHostmask(self, hostmask):
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self.hostmasks.append(hostmask)
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def removeHostmask(self, hostmask):
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self.hostmasks = [s for s in self.hostmasks if s != hostmask]
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def hasHostmask(self, hostmask):
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return hostmask in self.hostmasks
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def setAuth(self, hostmask):
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self.auth = (time.time(), hostmask)
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def unsetAuth(self):
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self.auth = None
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def checkAuth(self, hostmask):
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if self.auth is not None:
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(timeSet, prefix) = self.auth
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if time.time() - timeSet < 3600:
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if hostmask == prefix:
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return True
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else:
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return False
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else:
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self.unsetAuth()
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return False
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else:
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return False
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class IrcChannel(object):
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"""This class holds the capabilities, bans, and ignores of a channel.
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"""
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defaultOff = ('op', 'halfop', 'voice', 'protected')
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def __init__(self, bans=None, ignores=None, capabilities=None,
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lobotomized=False, defaultAllow=True):
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self.defaultAllow = defaultAllow
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if bans is None:
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self.bans = []
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else:
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self.bans = bans
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if ignores is None:
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self.ignores = []
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else:
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self.ignores = ignores
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if capabilities is None:
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self.capabilities = CapabilitySet()
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else:
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self.capabilities = capabilities
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for capability in self.defaultOff:
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if capability not in self.capabilities:
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self.capabilities.add(makeAntiCapability(capability))
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self.lobotomized = lobotomized
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def __repr__(self):
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return '%s(bans=%r, ignores=%r, capabilities=%r, '\
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'lobotomized=%r, defaultAllow=%s)\n' %\
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(self.__class__.__name__, self.bans, self.ignores,
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self.capabilities, self.lobotomized,
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self.defaultAllow)
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def addBan(self, hostmask):
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self.bans.append(hostmask)
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def removeBan(self, hostmask):
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self.bans = [s for s in self.bans if s != hostmask]
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def checkBan(self, hostmask):
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for pat in self.bans:
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if ircutils.hostmaskPatternEqual(pat, hostmask):
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return True
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return False
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def addIgnore(self, hostmask):
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self.ignores.append(hostmask)
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def removeIgnore(self, hostmask):
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self.ignores = [s for s in self.ignores if s != hostmask]
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def addCapability(self, capability):
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self.capabilities.add(capability)
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def removeCapability(self, capability):
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self.capabilities.remove(capability)
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def setDefaultCapability(self, b):
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self.defaultAllow = b
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def checkCapability(self, capability):
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if capability in self.capabilities:
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return self.capabilities.check(capability)
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else:
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if isAntiCapability(capability):
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return not self.defaultAllow
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else:
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return self.defaultAllow
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def checkIgnored(self, hostmask):
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if self.lobotomized:
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return True
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for mask in self.bans:
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if ircutils.hostmaskPatternEqual(mask, hostmask):
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return True
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for mask in self.ignores:
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if ircutils.hostmaskPatternEqual(mask, hostmask):
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return True
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return False
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class UsersDictionary(object):
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def __init__(self, filename):
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self.filename = filename
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fd = file(filename, 'r')
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s = fd.read()
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fd.close()
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Set = sets.Set
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ignore(Set) # Make PyChecker happy.
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self.dict = eval(normalize(s))
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self.cache = {} # hostmasks to nicks.
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self.revcache = ircutils.IrcDict() # nicks to hostmasks.
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def resetCache(self, s):
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if s in self.cache:
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# it's a hostmask.
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name = self.cache[s]
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del self.cache[s]
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else:
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# it's already a name.
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name = s
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# name should always be in self.revcache, this should never KeyError.
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if name in self.revcache:
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for hostmask in self.revcache[name]:
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del self.cache[hostmask]
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del self.revcache[name]
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def setCache(self, hostmask, name):
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self.cache[hostmask] = name
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self.revcache.setdefault(name, []).append(hostmask)
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def getUser(self, s):
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if ircutils.isUserHostmask(s):
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name = self.getUserName(s)
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else:
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name = s
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return self.dict[name]
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def setUser(self, s, u):
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# First, invalidate the cache for this user.
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self.resetCache(s)
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if ircutils.isUserHostmask(s):
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name = self.getUserName(s)
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else:
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name = s
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for hostmask in u.hostmasks:
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try:
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username = self.getUserName(hostmask)
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if username != name:
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raise ValueError, 'User has hostmasks already matching ' \
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'another user\'s hostmasks.'
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except KeyError:
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pass
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self.dict[name] = u
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def hasUser(self, s):
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return (s in self.dict)
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def delUser(self, s):
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if ircutils.isUserHostmask(s):
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name = self.getUserName(s)
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else:
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name = s
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self.resetCache(name)
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try:
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del self.dict[name]
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except KeyError:
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pass
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def getUserName(self, s):
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assert ircutils.isUserHostmask(s), 'string must be a hostmask'
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if s in self.cache:
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return self.cache[s]
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else:
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for (name, user) in self.dict.iteritems():
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if user.checkHostmask(s):
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self.cache[s] = name
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self.revcache.setdefault(name,[]).append(s)
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return name
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raise KeyError, s
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def flush(self):
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fd = file(self.filename, 'w')
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fd.write(repr(self.dict))
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fd.close()
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def reload(self):
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self.__init__(self.filename)
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class ChannelsDictionary(object):
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def __init__(self, filename):
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self.filename = filename
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fd = file(filename, 'r')
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s = fd.read()
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fd.close()
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Set = sets.Set
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self.dict = eval(normalize(s))
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def getChannel(self, channel):
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channel = channel.lower()
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if channel in self.dict:
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return self.dict[channel]
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else:
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c = IrcChannel()
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self.dict[channel] = c
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return c
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def setChannel(self, channel, ircChannel):
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channel = channel.lower()
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self.dict[channel] = ircChannel
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def flush(self):
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fd = file(self.filename, 'w')
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fd.write(repr(self.dict))
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fd.close()
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def reload(self):
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self.__init__(self.filename)
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###
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# Later, I might add some special handling for botnet.
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###
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if not os.path.exists(conf.userfile):
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fd = open(conf.userfile, 'w')
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fd.write('{}')
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fd.close()
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users = UsersDictionary(conf.userfile)
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if not os.path.exists(conf.channelfile):
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fd = file(conf.channelfile, 'w')
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fd.write('{}')
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fd.close()
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channels = ChannelsDictionary(conf.channelfile)
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def flushUsers():
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for (name, u) in users.dict.iteritems():
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u.unsetAuth()
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users.flush()
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atexit.register(flushUsers)
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atexit.register(channels.flush)
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world.flushers.append(users.flush)
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world.flushers.append(channels.flush)
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###
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# Useful functions for checking credentials.
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###
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def checkIgnored(hostmask, recipient='', users=users, channels=channels):
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"""checkIgnored(hostmask, recipient='') -> True/False
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Checks if the user is ignored by the recipient of the message.
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"""
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for ignore in conf.ignores:
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if ircutils.hostmaskPatternEqual(ignore, hostmask):
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return True
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try:
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user = users.getUser(hostmask)
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except KeyError:
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# If there's no user...
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if ircutils.isChannel(recipient):
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channel = channels.getChannel(recipient)
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return channel.checkIgnored(hostmask)
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else:
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return conf.defaultIgnore
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if user.checkCapability('owner'):
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# Owners shouldn't ever be ignored.
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return False
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elif user.ignore:
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return True
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elif recipient:
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if ircutils.isChannel(recipient):
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channel = channels.getChannel(recipient)
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return channel.checkIgnored(hostmask)
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else:
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return False
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else:
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return False
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def _x(capability, ret):
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if isAntiCapability(capability):
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return not ret
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else:
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return ret
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def checkCapability(hostmask, capability, users=users, channels=channels):
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#debug.printf('*** checking %s for %s' % (hostmask, capability))
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if world.startup:
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#debug.printf('world.startup is active.')
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return _x(capability, True)
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try:
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u = users.getUser(hostmask)
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except KeyError:
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#debug.printf('user could not be found.')
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if isChannelCapability(capability):
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#debug.printf('isChannelCapability true.')
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(channel, capability) = fromChannelCapability(capability)
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try:
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c = channels.getChannel(channel)
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if capability in c.capabilities:
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#debug.printf('capability in c.capabilities')
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return c.checkCapability(capability)
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else:
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#debug.printf('capability not in c.capabilities')
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return _x(capability, c.defaultAllow)
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except KeyError:
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#debug.printf('no such channel %s' % channel)
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pass
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if capability in conf.defaultCapabilities:
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#debug.printf('capability in conf.defaultCapability')
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return True
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elif invertCapability(capability) in conf.defaultCapabilities:
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#debug.printf('inverse capability in conf.defaultCapability')
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return False
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else:
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#debug.printf('returning appropriate value given no good reason')
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return _x(capability, conf.defaultAllow)
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#debug.printf('user found.')
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if capability in u.capabilities:
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#debug.printf('found capability in u.capabilities.')
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return u.checkCapability(capability)
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else:
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if isChannelCapability(capability):
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#debug.printf('isChannelCapability true, user found too.')
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(channel, capability) = fromChannelCapability(capability)
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try:
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c = channels.getChannel(channel)
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#debug.printf('channel found')
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if capability in c.capabilities:
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#debug.printf('capability in c.capabilities')
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return c.checkCapability(capability)
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else:
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#debug.printf('capability not in c.capabilities')
|
|
return _x(capability, c.defaultAllow)
|
|
except KeyError:
|
|
#debug.printf('no such channel %s' % channel)
|
|
pass
|
|
if capability in conf.defaultCapabilities:
|
|
#debug.printf('capability in conf.defaultCapabilities')
|
|
return True
|
|
elif invertCapability(capability) in conf.defaultCapabilities:
|
|
#debug.printf('inverse capability in conf.defaultCapabilities')
|
|
return False
|
|
else:
|
|
#debug.printf('returning appropriate value given no good reason')
|
|
return _x(capability, conf.defaultAllow)
|
|
|
|
|
|
def checkCapabilities(hostmask, capabilities, requireAll=False):
|
|
"""Checks that a user has capabilities in a list.
|
|
|
|
requireAll is the True if *all* capabilities in the list must be had, False
|
|
if *any* of the capabilities in the list must be had.
|
|
"""
|
|
for capability in capabilities:
|
|
if requireAll:
|
|
if not checkCapability(hostmask, capability):
|
|
return False
|
|
else:
|
|
if checkCapability(hostmask, capability):
|
|
return True
|
|
if requireAll:
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
def getUser(irc, s):
|
|
if ircutils.isUserHostmask(s):
|
|
return users.getUserName(s)
|
|
else:
|
|
if users.hasUser(s):
|
|
return s
|
|
else:
|
|
return users.getUserName(irc.state.nickToHostmask(s))
|
|
|
|
# vim:set shiftwidth=4 tabstop=8 expandtab textwidth=78:
|