mirror of
https://github.com/jlu5/PyLink.git
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1705 lines
71 KiB
Python
1705 lines
71 KiB
Python
# relay.py: PyLink Relay plugin
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import pickle
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import time
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import threading
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import string
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from collections import defaultdict
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from pylinkirc import utils, world
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from pylinkirc.log import log
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### GLOBAL (statekeeping) VARIABLES
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relayusers = defaultdict(dict)
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relayservers = defaultdict(dict)
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spawnlocks = defaultdict(threading.RLock)
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spawnlocks_servers = defaultdict(threading.RLock)
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exportdb_timer = None
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db = {}
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dbname = utils.getDatabaseName('pylinkrelay')
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### INTERNAL FUNCTIONS
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def initializeAll(irc):
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"""Initializes all relay channels for the given IRC object."""
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# Wait for all IRC objects to be created first. This prevents
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# relay servers from being spawned too early (before server authentication),
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# which would break connections.
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world.started.wait(2)
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for chanpair, entrydata in db.items():
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# Iterate over all the channels stored in our relay links DB.
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network, channel = chanpair
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# Initialize each relay channel on their home network, and on every linked one too.
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initializeChannel(irc, channel)
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for link in entrydata['links']:
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network, channel = link
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initializeChannel(irc, channel)
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def main(irc=None):
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"""Main function, called during plugin loading at start."""
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# Load the relay links database.
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loadDB()
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log.debug('relay.main: loading links database')
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# Schedule periodic exports of the links database.
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scheduleExport(starting=True)
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log.debug('relay.main: scheduling export loop')
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if irc is not None:
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# irc is defined when the plugin is reloaded. Otherwise, it means that we've just started the
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# server. Iterate over all connected networks and initialize their relay users.
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for ircobj in world.networkobjects.values():
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if ircobj.connected.is_set():
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initializeAll(ircobj)
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log.debug('relay.main: finished initialization sequence')
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def die(sourceirc):
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"""Deinitialize PyLink Relay by quitting all relay clients and saving the
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relay DB."""
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# For every connected network:
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for irc in world.networkobjects.values():
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# 1) Find all the relay clients and quit them.
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for user in irc.users.copy():
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if isRelayClient(irc, user):
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irc.proto.quit(user, "Relay plugin unloaded.")
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# 2) SQUIT every relay subserver.
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for server, sobj in irc.servers.copy().items():
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if hasattr(sobj, 'remote'):
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irc.proto.squit(irc.sid, server, text="Relay plugin unloaded.")
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# 3) Clear our internal servers and users caches.
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relayservers.clear()
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relayusers.clear()
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# 4) Export the relay links database.
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exportDB()
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# 5) Kill the scheduling for any other exports.
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global exportdb_timer
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if exportdb_timer:
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log.debug("Relay: cancelling exportDB timer thread %s due to die()", threading.get_ident())
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exportdb_timer.cancel()
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def normalizeNick(irc, netname, nick, separator=None, uid=''):
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"""Creates a normalized nickname for the given nick suitable for
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introduction to a remote network (as a relay client)."""
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separator = separator or irc.serverdata.get('separator') or "/"
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log.debug('(%s) relay.normalizeNick: using %r as separator.', irc.name, separator)
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orig_nick = nick
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protoname = irc.protoname
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maxnicklen = irc.maxnicklen
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# Charybdis, IRCu, etc. don't allow / in nicks, and will SQUIT with a protocol
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# violation if it sees one. Or it might just ignore the client introduction and
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# cause bad desyncs.
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protocol_allows_slashes = protoname.startswith(('insp', 'unreal')) or \
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irc.serverdata.get('relay_force_slashes')
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if '/' not in separator or not protocol_allows_slashes:
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separator = separator.replace('/', '|')
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nick = nick.replace('/', '|')
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if nick.startswith(tuple(string.digits)):
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# On TS6 IRCds, nicks that start with 0-9 are only allowed if
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# they match the UID of the originating server. Otherwise, you'll
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# get nasty protocol violation SQUITs!
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nick = '_' + nick
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suffix = separator + netname
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nick = nick[:maxnicklen]
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# Maximum allowed length of a nickname, minus the obligatory /network tag.
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allowedlength = maxnicklen - len(suffix)
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# If a nick is too long, the real nick portion will be cut off, but the
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# /network suffix MUST remain the same.
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nick = nick[:allowedlength]
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nick += suffix
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# The nick we want exists? Darn, create another one then.
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# Increase the separator length by 1 if the user was already tagged,
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# but couldn't be created due to a nick conflict.
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# This can happen when someone steals a relay user's nick.
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# However, if the user is changing from, say, a long, cut-off nick to another long,
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# cut-off nick, we don't need to check for duplicates and tag the nick twice.
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# somecutoffnick/net would otherwise be erroneous NICK'ed to somecutoffnic//net,
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# even though there would be no collision because the old and new nicks are from
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# the same client.
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while irc.nickToUid(nick) and irc.nickToUid(nick) != uid:
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new_sep = separator + separator[-1]
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log.debug('(%s) relay.normalizeNick: nick %r is in use; using %r as new_sep.', irc.name, nick, new_sep)
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nick = normalizeNick(irc, netname, orig_nick, separator=new_sep)
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finalLength = len(nick)
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assert finalLength <= maxnicklen, "Normalized nick %r went over max " \
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"nick length (got: %s, allowed: %s!)" % (nick, finalLength, maxnicklen)
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return nick
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def normalizeHost(irc, host):
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"""Creates a normalized hostname for the given host suitable for
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introduction to a remote network (as a relay client)."""
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if irc.protoname == 'unreal':
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# UnrealIRCd doesn't allow slashes in hostnames
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host = host.replace('/', '.')
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return host[:64] # Limited to 64 chars
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def loadDB():
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"""Loads the relay database, creating a new one if this fails."""
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global db
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try:
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with open(dbname, "rb") as f:
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db = pickle.load(f)
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except (ValueError, IOError, OSError):
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log.info("Relay: failed to load links database %s"
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", creating a new one in memory...", dbname)
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db = {}
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def exportDB():
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"""Exports the relay database."""
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log.debug("Relay: exporting links database to %s", dbname)
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with open(dbname, 'wb') as f:
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pickle.dump(db, f, protocol=4)
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def scheduleExport(starting=False):
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"""
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Schedules exporting of the relay database in a repeated loop.
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"""
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global exportdb_timer
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if not starting:
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# Export the database, unless this is being called the first
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# thing after start (i.e. DB has just been loaded).
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exportDB()
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# TODO: possibly make delay between exports configurable
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exportdb_timer = threading.Timer(30, scheduleExport)
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exportdb_timer.name = 'PyLink Relay exportDB Loop'
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exportdb_timer.start()
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def getPrefixModes(irc, remoteirc, channel, user, mlist=None):
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"""
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Fetches all prefix modes for a user in a channel that are supported by the
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remote IRC network given.
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Optionally, an mlist argument can be given to look at an earlier state of
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the channel, e.g. for checking the op status of a mode setter before their
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modes are processed and added to the channel state.
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"""
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modes = ''
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if user in irc.channels[channel].users:
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# Iterate over the the prefix modes for relay supported by IRCd
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for pmode in irc.channels[channel].getPrefixModes(user, prefixmodes=mlist):
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if pmode in remoteirc.cmodes:
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modes += remoteirc.cmodes[pmode]
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return modes
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def spawnRelayServer(irc, remoteirc):
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irc.connected.wait()
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try:
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# ENDBURST is delayed by 3 secs on supported IRCds to prevent
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# triggering join-flood protection and the like.
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sid = irc.proto.spawnServer('%s.relay' % remoteirc.name,
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desc="PyLink Relay network - %s" %
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(remoteirc.serverdata.get('netname')\
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or remoteirc.name), endburst_delay=3)
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except ValueError: # Network not initialized yet, or a server name conflict.
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log.exception('(%s) Failed to spawn server for %r:',
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irc.name, remoteirc.name)
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# We will just bail here. Disconnect the bad network.
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handle_disconnect(irc, None, 'PYLINK_DISCONNECT_RELAY_FORCED', {})
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irc.disconnect()
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raise
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# Mark the server as a relay server
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irc.servers[sid].remote = remoteirc.name
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# Assign the newly spawned server as our relay server for the target net.
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relayservers[irc.name][remoteirc.name] = sid
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return sid
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def getRemoteSid(irc, remoteirc):
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"""Gets the remote server SID representing remoteirc on irc, spawning
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it if it doesn't exist."""
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log.debug('(%s) Grabbing spawnlocks_servers[%s]', irc.name, irc.name)
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with spawnlocks_servers[irc.name]:
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try:
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sid = relayservers[irc.name][remoteirc.name]
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except KeyError:
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log.debug('(%s) getRemoteSid: %s.relay doesn\'t have a known SID, spawning.', irc.name, remoteirc.name)
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sid = spawnRelayServer(irc, remoteirc)
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log.debug('(%s) getRemoteSid: got %s for %s.relay', irc.name, sid, remoteirc.name)
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if sid not in irc.servers:
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log.debug('(%s) getRemoteSid: SID %s for %s.relay doesn\'t exist, respawning', irc.name, sid, remoteirc.name)
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# Our stored server doesn't exist anymore. This state is probably a holdover from a netsplit,
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# so let's refresh it.
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sid = spawnRelayServer(irc, remoteirc)
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elif sid in irc.servers and irc.servers[sid].remote != remoteirc.name:
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log.debug('(%s) getRemoteSid: %s.relay != %s.relay, respawning', irc.name, irc.servers[sid].remote, remoteirc.name)
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sid = spawnRelayServer(irc, remoteirc)
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log.debug('(%s) getRemoteSid: got %s for %s.relay (round 2)', irc.name, sid, remoteirc.name)
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return sid
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def spawnRelayUser(irc, remoteirc, user):
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userobj = irc.users.get(user)
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if userobj is None:
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# The query wasn't actually a valid user, or the network hasn't
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# been connected yet... Oh well!
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return
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nick = normalizeNick(remoteirc, irc.name, userobj.nick)
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# Truncate idents at 10 characters, because TS6 won't like them otherwise!
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ident = userobj.ident[:10]
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# Normalize hostnames
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host = normalizeHost(remoteirc, userobj.host)
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realname = userobj.realname
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modes = set(getSupportedUmodes(irc, remoteirc, userobj.modes))
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opertype = ''
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if ('o', None) in userobj.modes:
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if hasattr(userobj, 'opertype'):
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# InspIRCd's special OPERTYPE command; this is mandatory
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# and setting of umode +/-o will fail unless this
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# is used instead. This also sets an oper type for
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# the user, which is used in WHOIS, etc.
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# If an opertype exists for the user, add " (remote)"
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# for the relayed clone, so that it shows in whois.
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# Janus does this too. :)
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log.debug('(%s) relay.getRemoteUser: setting OPERTYPE of client for %r to %s',
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irc.name, user, userobj.opertype)
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opertype = userobj.opertype + ' (remote)'
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else:
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opertype = 'IRC Operator (remote)'
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# Set hideoper on remote opers, to prevent inflating
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# /lusers and various /stats
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hideoper_mode = remoteirc.umodes.get('hideoper')
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try:
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use_hideoper = irc.conf['relay']['hideoper']
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except KeyError:
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use_hideoper = True
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if hideoper_mode and use_hideoper:
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modes.add((hideoper_mode, None))
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rsid = getRemoteSid(remoteirc, irc)
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try:
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showRealIP = irc.conf['relay']['show_ips'] and not \
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irc.serverdata.get('relay_no_ips') and not \
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remoteirc.serverdata.get('relay_no_ips')
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except KeyError:
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showRealIP = False
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if showRealIP:
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ip = userobj.ip
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realhost = userobj.realhost
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else:
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realhost = None
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ip = '0.0.0.0'
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u = remoteirc.proto.spawnClient(nick, ident=ident,
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host=host, realname=realname,
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modes=modes, ts=userobj.ts,
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opertype=opertype, server=rsid,
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ip=ip, realhost=realhost).uid
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remoteirc.users[u].remote = (irc.name, user)
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remoteirc.users[u].opertype = opertype
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away = userobj.away
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if away:
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remoteirc.proto.away(u, away)
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relayusers[(irc.name, user)][remoteirc.name] = u
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return u
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def getRemoteUser(irc, remoteirc, user, spawnIfMissing=True):
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"""
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Gets the UID of the relay client requested on the target network (remoteirc),
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spawning one if it doesn't exist and spawnIfMissing is True."""
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# Wait until the network is working before trying to spawn anything.
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log.debug('(%s) getRemoteUser: waiting for irc.connected', irc.name)
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irc.connected.wait()
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# Don't spawn clones for registered service bots.
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sbot = irc.isServiceBot(user)
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if sbot:
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return sbot.uids.get(remoteirc.name)
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log.debug('(%s) Grabbing spawnlocks[%s]', irc.name, irc.name)
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with spawnlocks[irc.name]:
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# Be sort-of thread safe: lock the user spawns for the current net first.
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u = None
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try:
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# Look up the existing user, stored here as dict entries in the format:
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# {('ournet', 'UID'): {'remotenet1': 'UID1', 'remotenet2': 'UID2'}}
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u = relayusers[(irc.name, user)][remoteirc.name]
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except KeyError:
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# User doesn't exist. Spawn a new one if requested.
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if spawnIfMissing:
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u = spawnRelayUser(irc, remoteirc, user)
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# This is a sanity check to make sure netsplits and other state resets
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# don't break the relayer. If it turns out there was a client in our relayusers
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# cache for the requested UID, but it doesn't match the request,
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# assume it was a leftover from the last split and replace it with a new one.
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if u and ((u not in remoteirc.users) or remoteirc.users[u].remote != (irc.name, user)):
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spawnRelayUser(irc, remoteirc, user)
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return u
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def getOrigUser(irc, user, targetirc=None):
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"""
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Given the UID of a relay client, returns a tuple of the home network name
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and original UID of the user it was spawned for.
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If targetirc is given, getRemoteUser() is called to get the relay client
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representing the original user on that target network."""
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# First, iterate over everyone!
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try:
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remoteuser = irc.users[user].remote
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except (AttributeError, KeyError):
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remoteuser = None
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log.debug('(%s) relay.getOrigUser: remoteuser set to %r (looking up %s/%s).',
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irc.name, remoteuser, user, irc.name)
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if remoteuser:
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# If targetirc is given, we'll return simply the UID of the user on the
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# target network, if it exists. Otherwise, we'll return a tuple
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# with the home network name and the original user's UID.
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sourceobj = world.networkobjects.get(remoteuser[0])
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if targetirc and sourceobj:
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if remoteuser[0] == targetirc.name:
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# The user we found's home network happens to be the one being
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# requested; just return the UID then.
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return remoteuser[1]
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# Otherwise, use getRemoteUser to find our UID.
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res = getRemoteUser(sourceobj, targetirc, remoteuser[1],
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spawnIfMissing=False)
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log.debug('(%s) relay.getOrigUser: targetirc found, getting %r as '
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'remoteuser for %r (looking up %s/%s).', irc.name, res,
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remoteuser[1], user, irc.name)
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return res
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else:
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return remoteuser
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def getRelay(chanpair):
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"""Finds the matching relay entry name for the given (network name, channel)
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pair, if one exists."""
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if chanpair in db: # This chanpair is a shared channel; others link to it
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return chanpair
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# This chanpair is linked *to* a remote channel
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for name, dbentry in db.items():
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if chanpair in dbentry['links']:
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return name
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def getRemoteChan(irc, remoteirc, channel):
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"""Returns the linked channel name for the given channel on remoteirc,
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if one exists."""
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query = (irc.name, channel)
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remotenetname = remoteirc.name
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chanpair = getRelay(query)
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if chanpair is None:
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return
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if chanpair[0] == remotenetname:
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return chanpair[1]
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else:
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for link in db[chanpair]['links']:
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if link[0] == remotenetname:
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return link[1]
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def initializeChannel(irc, channel):
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"""Initializes a relay channel (merge local/remote users, set modes, etc.)."""
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# We're initializing a relay that already exists. This can be done at
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# ENDBURST, or on the LINK command.
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relay = getRelay((irc.name, channel))
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log.debug('(%s) relay.initializeChannel being called on %s', irc.name, channel)
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log.debug('(%s) relay.initializeChannel: relay pair found to be %s', irc.name, relay)
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queued_users = []
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if relay:
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all_links = db[relay]['links'].copy()
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all_links.update((relay,))
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log.debug('(%s) relay.initializeChannel: all_links: %s', irc.name, all_links)
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# Iterate over all the remote channels linked in this relay.
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for link in all_links:
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remotenet, remotechan = link
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if remotenet == irc.name: # If the network is us, skip.
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continue
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remoteirc = world.networkobjects.get(remotenet)
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if remoteirc is None:
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# Remote network doesn't have an IRC object; e.g. it was removed
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# from the config. Skip this.
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continue
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rc = remoteirc.channels[remotechan]
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if not (remoteirc.connected.is_set() and getRemoteChan(remoteirc, irc, remotechan)):
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continue # Remote network isn't connected.
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# Join their (remote) users and set their modes.
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relayJoins(remoteirc, remotechan, rc.users, rc.ts)
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topic = remoteirc.channels[remotechan].topic
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# Only update the topic if it's different from what we already have,
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# and topic bursting is complete.
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if remoteirc.channels[remotechan].topicset and topic != irc.channels[channel].topic:
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irc.proto.topicBurst(irc.sid, channel, topic)
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# Send our users and channel modes to the other nets
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log.debug('(%s) relay.initializeChannel: joining our (%s) users: %s', irc.name, remotenet, irc.channels[channel].users)
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|
relayJoins(irc, channel, irc.channels[channel].users, irc.channels[channel].ts)
|
|
|
|
world.services['pylink'].extra_channels[irc.name].add(channel)
|
|
if irc.pseudoclient and irc.pseudoclient.uid not in irc.channels[channel].users:
|
|
irc.proto.join(irc.pseudoclient.uid, channel)
|
|
|
|
def removeChannel(irc, channel):
|
|
"""Destroys a relay channel by parting all of its users."""
|
|
if irc is None:
|
|
return
|
|
|
|
if channel not in map(str.lower, irc.serverdata.get('channels', [])):
|
|
world.services['pylink'].extra_channels[irc.name].discard(channel)
|
|
irc.proto.part(irc.pseudoclient.uid, channel, 'Channel delinked.')
|
|
|
|
relay = getRelay((irc.name, channel))
|
|
if relay:
|
|
for user in irc.channels[channel].users.copy():
|
|
if not isRelayClient(irc, user):
|
|
relayPart(irc, channel, user)
|
|
# Don't ever part the main client from any of its autojoin channels.
|
|
else:
|
|
if user == irc.pseudoclient.uid and channel in \
|
|
irc.serverdata.get('channels', []):
|
|
continue
|
|
irc.proto.part(user, channel, 'Channel delinked.')
|
|
# Don't ever quit it either...
|
|
if user != irc.pseudoclient.uid and not irc.users[user].channels:
|
|
remoteuser = getOrigUser(irc, user)
|
|
del relayusers[remoteuser][irc.name]
|
|
irc.proto.quit(user, 'Left all shared channels.')
|
|
|
|
def checkClaim(irc, channel, sender, chanobj=None):
|
|
"""
|
|
Checks whether the sender of a kick/mode change passes CLAIM checks for
|
|
a given channel. This returns True if any of the following criteria are met:
|
|
|
|
1) No relay exists for the channel in question.
|
|
2) The originating network is the one that created the relay.
|
|
3) The CLAIM list for the relay in question is empty.
|
|
4) The originating network is in the CLAIM list for the relay in question.
|
|
5) The sender is halfop or above in the channel.
|
|
6) The sender is a PyLink client/server (checks are suppressed in this case).
|
|
"""
|
|
relay = getRelay((irc.name, channel))
|
|
try:
|
|
mlist = chanobj.prefixmodes
|
|
except AttributeError:
|
|
mlist = None
|
|
|
|
sender_modes = getPrefixModes(irc, irc, channel, sender, mlist=mlist)
|
|
log.debug('(%s) relay.checkClaim: sender modes (%s/%s) are %s (mlist=%s)', irc.name,
|
|
sender, channel, sender_modes, mlist)
|
|
# XXX: stop hardcoding modes to check for and support mlist in isHalfopPlus and friends
|
|
return (not relay) or irc.name == relay[0] or not db[relay]['claim'] or \
|
|
irc.name in db[relay]['claim'] or \
|
|
any([mode in sender_modes for mode in ('y', 'q', 'a', 'o', 'h')]) \
|
|
or irc.isInternalClient(sender) or \
|
|
irc.isInternalServer(sender)
|
|
|
|
def getSupportedUmodes(irc, remoteirc, modes):
|
|
"""Given a list of user modes, filters out all of those not supported by the
|
|
remote network."""
|
|
supported_modes = []
|
|
|
|
# Iterate over all mode pairs.
|
|
for modepair in modes:
|
|
try:
|
|
# Get the prefix and the actual mode character (the prefix being + or -, or
|
|
# whether we're setting or unsetting a mode)
|
|
prefix, modechar = modepair[0]
|
|
except ValueError:
|
|
# If the prefix is missing, assume we're adding a mode.
|
|
modechar = modepair[0]
|
|
prefix = '+'
|
|
|
|
# Get the mode argument.
|
|
arg = modepair[1]
|
|
|
|
# Iterate over all supported user modes for the current network.
|
|
for name, m in irc.umodes.items():
|
|
supported_char = None
|
|
|
|
# Mode character matches one in our list, so set that named mode
|
|
# as the one we're trying to set. Then, look up that named mode
|
|
# in the supported modes list for the TARGET network, and set that
|
|
# mode character as the one we're setting, if it exists.
|
|
if modechar == m:
|
|
if name not in whitelisted_umodes:
|
|
log.debug("(%s) relay.getSupportedUmodes: skipping mode (%r, %r) because "
|
|
"it isn't a whitelisted (safe) mode for relay.",
|
|
irc.name, modechar, arg)
|
|
break
|
|
supported_char = remoteirc.umodes.get(name)
|
|
|
|
if supported_char:
|
|
supported_modes.append((prefix+supported_char, arg))
|
|
break
|
|
else:
|
|
log.debug("(%s) relay.getSupportedUmodes: skipping mode (%r, %r) because "
|
|
"the remote network (%s)'s IRCd (%s) doesn't support it.",
|
|
irc.name, modechar, arg, remoteirc.name,
|
|
remoteirc.protoname)
|
|
return supported_modes
|
|
|
|
def isRelayClient(irc, user):
|
|
"""Returns whether the given user is a relay client."""
|
|
try:
|
|
if irc.users[user].remote:
|
|
# Is the .remote attribute set? If so, don't relay already
|
|
# relayed clients; that'll trigger an endless loop!
|
|
return True
|
|
except AttributeError: # Nope, it isn't.
|
|
pass
|
|
except KeyError: # The user doesn't exist?!?
|
|
return True
|
|
return False
|
|
|
|
### EVENT HANDLER INTERNALS
|
|
|
|
def relayJoins(irc, channel, users, ts, burst=True):
|
|
"""
|
|
Relays one or more users' joins from a channel to its relay links.
|
|
"""
|
|
for name, remoteirc in world.networkobjects.copy().items():
|
|
queued_users = []
|
|
if name == irc.name or not remoteirc.connected.is_set():
|
|
# Don't relay things to their source network...
|
|
continue
|
|
|
|
remotechan = getRemoteChan(irc, remoteirc, channel)
|
|
if remotechan is None:
|
|
# If there is no link on the current network for the channel in question,
|
|
# just skip it
|
|
continue
|
|
|
|
log.debug('(%s) relay.relayJoins: got %r for users', irc.name, users)
|
|
|
|
for user in users.copy():
|
|
if isRelayClient(irc, user):
|
|
# Don't clone relay clients; that'll cause bad infinite loops.
|
|
continue
|
|
|
|
assert user in irc.users, "(%s) relay.relayJoins: How is this possible? %r isn't in our user database." % (irc.name, user)
|
|
u = getRemoteUser(irc, remoteirc, user)
|
|
|
|
if not u:
|
|
continue
|
|
|
|
if u not in remoteirc.channels[remotechan].users:
|
|
# Note: only join users if they aren't already joined. This prevents op floods
|
|
# on charybdis from repeated SJOINs sent for one user.
|
|
|
|
# Fetch the known channel TS and all the prefix modes for each user. This ensures
|
|
# the different sides of the relay are merged properly.
|
|
ts = irc.channels[channel].ts
|
|
prefixes = getPrefixModes(irc, remoteirc, channel, user)
|
|
|
|
# proto.sjoin() takes its users as a list of (prefix mode characters, UID) pairs.
|
|
userpair = (prefixes, u)
|
|
queued_users.append(userpair)
|
|
|
|
if queued_users:
|
|
# Look at whether we should relay this join as a regular JOIN, or a SJOIN.
|
|
# SJOIN will be used if either the amount of users to join is > 1, or there are modes
|
|
# to be set on the joining user.
|
|
if burst or len(queued_users) > 1 or queued_users[0][0]:
|
|
modes = getSupportedCmodes(irc, remoteirc, channel, irc.channels[channel].modes)
|
|
remoteirc.proto.sjoin(getRemoteSid(remoteirc, irc), remotechan, queued_users, ts=ts, modes=modes)
|
|
else:
|
|
# A regular JOIN only needs the user and the channel. TS, source SID, etc., can all be omitted.
|
|
remoteirc.proto.join(queued_users[0][1], remotechan)
|
|
|
|
def relayPart(irc, channel, user):
|
|
"""
|
|
Relays a user part from a channel to its relay links, as part of a channel delink.
|
|
"""
|
|
for name, remoteirc in world.networkobjects.copy().items():
|
|
if name == irc.name or not remoteirc.connected.is_set():
|
|
# Don't relay things to their source network...
|
|
continue
|
|
|
|
remotechan = getRemoteChan(irc, remoteirc, channel)
|
|
log.debug('(%s) relay.relayPart: looking for %s/%s on %s', irc.name, user, irc.name, remoteirc.name)
|
|
log.debug('(%s) relay.relayPart: remotechan found as %s', irc.name, remotechan)
|
|
|
|
remoteuser = getRemoteUser(irc, remoteirc, user, spawnIfMissing=False)
|
|
log.debug('(%s) relay.relayPart: remoteuser for %s/%s found as %s', irc.name, user, irc.name, remoteuser)
|
|
|
|
if remotechan is None or remoteuser is None:
|
|
# If there is no relay channel on the target network, or the relay
|
|
# user doesn't exist, just do nothing.
|
|
continue
|
|
|
|
# Part the relay client with the channel delinked message.
|
|
remoteirc.proto.part(remoteuser, remotechan, 'Channel delinked.')
|
|
|
|
# If the relay client no longer has any channels, quit them to prevent inflating /lusers.
|
|
if isRelayClient(remoteirc, remoteuser) and not remoteirc.users[remoteuser].channels:
|
|
remoteirc.proto.quit(remoteuser, 'Left all shared channels.')
|
|
del relayusers[(irc.name, user)][remoteirc.name]
|
|
|
|
|
|
whitelisted_cmodes = {'admin', 'allowinvite', 'autoop', 'ban', 'banexception',
|
|
'blockcolor', 'halfop', 'invex', 'inviteonly', 'key',
|
|
'limit', 'moderated', 'noctcp', 'noextmsg', 'nokick',
|
|
'noknock', 'nonick', 'nonotice', 'op', 'operonly',
|
|
'opmoderated', 'owner', 'private', 'regonly',
|
|
'regmoderated', 'secret', 'sslonly', 'adminonly',
|
|
'stripcolor', 'topiclock', 'voice', 'flood',
|
|
'flood_unreal', 'joinflood', 'freetarget',
|
|
'noforwards', 'noinvite'}
|
|
whitelisted_umodes = {'bot', 'hidechans', 'hideoper', 'invisible', 'oper',
|
|
'regdeaf', 'stripcolor', 'noctcp', 'wallops',
|
|
'hideidle'}
|
|
def getSupportedCmodes(irc, remoteirc, channel, modes):
|
|
"""
|
|
Filters a channel mode change to the modes supported by the target IRCd.
|
|
"""
|
|
remotechan = getRemoteChan(irc, remoteirc, channel)
|
|
if not remotechan: # Not a relay channel
|
|
return []
|
|
|
|
supported_modes = []
|
|
for modepair in modes:
|
|
try:
|
|
prefix, modechar = modepair[0]
|
|
except ValueError:
|
|
modechar = modepair[0]
|
|
prefix = '+'
|
|
arg = modepair[1]
|
|
|
|
# Iterate over every mode see whether the remote IRCd supports
|
|
# this mode, and what its mode char for it is (if it is different).
|
|
for name, m in irc.cmodes.items():
|
|
supported_char = None
|
|
if modechar == m:
|
|
supported_char = remoteirc.cmodes.get(name)
|
|
|
|
if supported_char is None:
|
|
break
|
|
|
|
if name not in whitelisted_cmodes:
|
|
log.debug("(%s) relay.getSupportedCmodes: skipping mode (%r, %r) because "
|
|
"it isn't a whitelisted (safe) mode for relay.",
|
|
irc.name, modechar, arg)
|
|
break
|
|
|
|
if modechar in irc.prefixmodes:
|
|
# This is a prefix mode (e.g. +o). We must coerse the argument
|
|
# so that the target exists on the remote relay network.
|
|
log.debug("(%s) relay.getSupportedCmodes: coersing argument of (%r, %r) "
|
|
"for network %r.",
|
|
irc.name, modechar, arg, remoteirc.name)
|
|
|
|
# If the target is a remote user, get the real target
|
|
# (original user).
|
|
arg = getOrigUser(irc, arg, targetirc=remoteirc) or \
|
|
getRemoteUser(irc, remoteirc, arg, spawnIfMissing=False)
|
|
|
|
log.debug("(%s) relay.getSupportedCmodes: argument found as (%r, %r) "
|
|
"for network %r.",
|
|
irc.name, modechar, arg, remoteirc.name)
|
|
oplist = remoteirc.channels[remotechan].prefixmodes[name]
|
|
|
|
log.debug("(%s) relay.getSupportedCmodes: list of %ss on %r is: %s",
|
|
irc.name, name, remotechan, oplist)
|
|
|
|
if prefix == '+' and arg in oplist:
|
|
# Don't set prefix modes that are already set.
|
|
log.debug("(%s) relay.getSupportedCmodes: skipping setting %s on %s/%s because it appears to be already set.",
|
|
irc.name, name, arg, remoteirc.name)
|
|
break
|
|
|
|
supported_char = remoteirc.cmodes.get(name)
|
|
|
|
if supported_char:
|
|
final_modepair = (prefix+supported_char, arg)
|
|
if name in ('ban', 'banexception', 'invex') and not utils.isHostmask(arg):
|
|
# Don't add bans that don't match n!u@h syntax!
|
|
log.debug("(%s) relay.getSupportedCmodes: skipping mode (%r, %r) because it doesn't match nick!user@host syntax.",
|
|
irc.name, modechar, arg)
|
|
break
|
|
|
|
# Don't set modes that are already set, to prevent floods on TS6
|
|
# where the same mode can be set infinite times.
|
|
if prefix == '+' and final_modepair in remoteirc.channels[remotechan].modes:
|
|
log.debug("(%s) relay.getSupportedCmodes: skipping setting mode (%r, %r) on %s%s because it appears to be already set.",
|
|
irc.name, supported_char, arg, remoteirc.name, remotechan)
|
|
break
|
|
|
|
supported_modes.append(final_modepair)
|
|
|
|
log.debug('(%s) relay.getSupportedCmodes: final modelist (sending to %s%s) is %s', irc.name, remoteirc.name, remotechan, supported_modes)
|
|
return supported_modes
|
|
|
|
### EVENT HANDLERS
|
|
|
|
def handle_relay_whois(irc, source, command, args):
|
|
"""
|
|
WHOIS handler for the relay plugin.
|
|
"""
|
|
target = args['target']
|
|
server = args['server']
|
|
targetuser = irc.users[target]
|
|
|
|
def wreply(num, text):
|
|
"""Convenience wrapper to return WHOIS replies."""
|
|
# WHOIS replies are by convention prefixed with the target user's nick.
|
|
text = '%s %s' % (targetuser.nick, text)
|
|
irc.proto.numeric(server, num, source, text)
|
|
|
|
def checkSendKey(infoline):
|
|
"""
|
|
Returns whether we should send the given info line in WHOIS. This validates the
|
|
corresponding configuration option for being either "all" or "opers"."""
|
|
setting = irc.conf.get('relay', {}).get(infoline, '').lower()
|
|
if setting == 'all':
|
|
return True
|
|
elif setting == 'opers' and irc.isOper(source, allowAuthed=False):
|
|
return True
|
|
return False
|
|
|
|
# Get the real user for the WHOIS target.
|
|
origuser = getOrigUser(irc, target)
|
|
if origuser:
|
|
homenet, uid = origuser
|
|
realirc = world.networkobjects[homenet]
|
|
realuser = realirc.users[uid]
|
|
netname = realirc.serverdata.get('netname', homenet)
|
|
|
|
wreply(320, ":is a remote user connected via PyLink Relay. Home network: %s; "
|
|
"Home nick: %s" % (netname, realuser.nick))
|
|
|
|
if checkSendKey('whois_show_accounts') and realuser.services_account:
|
|
# Send account information if told to and the target is logged in.
|
|
wreply(330, "%s :is logged in (on %s) as" % (realuser.services_account, netname))
|
|
|
|
if checkSendKey('whois_show_server'):
|
|
wreply(320, ":is actually connected via the following server:")
|
|
realserver = realirc.getServer(uid)
|
|
realserver = realirc.servers[realserver]
|
|
wreply(312, "%s :%s" % (realserver.name, realserver.desc))
|
|
|
|
utils.add_hook(handle_relay_whois, 'PYLINK_CUSTOM_WHOIS')
|
|
|
|
def handle_operup(irc, numeric, command, args):
|
|
newtype = args['text'] + '_(remote)'
|
|
for netname, user in relayusers[(irc.name, numeric)].items():
|
|
log.debug('(%s) relay.handle_opertype: setting OPERTYPE of %s/%s to %s',
|
|
irc.name, user, netname, newtype)
|
|
remoteirc = world.networkobjects[netname]
|
|
remoteirc.users[user].opertype = newtype
|
|
utils.add_hook(handle_operup, 'CLIENT_OPERED')
|
|
|
|
def handle_join(irc, numeric, command, args):
|
|
channel = args['channel']
|
|
if not getRelay((irc.name, channel)):
|
|
# No relay here, return.
|
|
return
|
|
ts = args['ts']
|
|
users = set(args['users'])
|
|
relayJoins(irc, channel, users, ts, burst=False)
|
|
utils.add_hook(handle_join, 'JOIN')
|
|
|
|
def handle_quit(irc, numeric, command, args):
|
|
# Lock the user spawning mechanism before proceeding, since we're going to be
|
|
# deleting client from the relayusers cache.
|
|
log.debug('(%s) Grabbing spawnlocks[%s]', irc.name, irc.name)
|
|
with spawnlocks[irc.name]:
|
|
for netname, user in relayusers[(irc.name, numeric)].copy().items():
|
|
remoteirc = world.networkobjects[netname]
|
|
try: # Try to quit the client. If this fails because they're missing, bail.
|
|
remoteirc.proto.quit(user, args['text'])
|
|
except LookupError:
|
|
pass
|
|
del relayusers[(irc.name, numeric)]
|
|
|
|
utils.add_hook(handle_quit, 'QUIT')
|
|
|
|
def handle_squit(irc, numeric, command, args):
|
|
"""
|
|
Handles SQUITs over relay.
|
|
"""
|
|
users = args['users']
|
|
target = args['target']
|
|
|
|
# Someone /SQUIT one of our relay subservers. Bad! Rejoin them!
|
|
if target in relayservers[irc.name].values():
|
|
sname = args['name']
|
|
remotenet = sname.split('.', 1)[0]
|
|
del relayservers[irc.name][remotenet]
|
|
|
|
for userpair in relayusers:
|
|
if userpair[0] == remotenet and irc.name in relayusers[userpair]:
|
|
del relayusers[userpair][irc.name]
|
|
|
|
remoteirc = world.networkobjects[remotenet]
|
|
initializeAll(remoteirc)
|
|
|
|
else:
|
|
# Some other netsplit happened on the network, we'll have to fake
|
|
# some *.net *.split quits for that.
|
|
for user in users:
|
|
log.debug('(%s) relay.handle_squit: sending handle_quit on %s', irc.name, user)
|
|
|
|
try: # Allow netsplit hiding to be toggled
|
|
show_splits = irc.conf['relay']['show_netsplits']
|
|
except KeyError:
|
|
show_splits = False
|
|
|
|
text = '*.net *.split'
|
|
if show_splits:
|
|
uplink = args['uplink']
|
|
try:
|
|
text = '%s %s' % (irc.servers[uplink].name, args['name'])
|
|
except (KeyError, AttributeError):
|
|
log.warning("(%s) relay.handle_squit: Failed to get server name for %s",
|
|
irc.name, uplink)
|
|
|
|
handle_quit(irc, user, command, {'text': text})
|
|
|
|
utils.add_hook(handle_squit, 'SQUIT')
|
|
|
|
def handle_nick(irc, numeric, command, args):
|
|
for netname, user in relayusers[(irc.name, numeric)].items():
|
|
remoteirc = world.networkobjects[netname]
|
|
newnick = normalizeNick(remoteirc, irc.name, args['newnick'], uid=user)
|
|
if remoteirc.users[user].nick != newnick:
|
|
remoteirc.proto.nick(user, newnick)
|
|
utils.add_hook(handle_nick, 'NICK')
|
|
|
|
def handle_part(irc, numeric, command, args):
|
|
channels = args['channels']
|
|
text = args['text']
|
|
# Don't allow the PyLink client PARTing to be relayed.
|
|
if numeric == irc.pseudoclient.uid:
|
|
return
|
|
for channel in channels:
|
|
for netname, user in relayusers[(irc.name, numeric)].copy().items():
|
|
remoteirc = world.networkobjects[netname]
|
|
remotechan = getRemoteChan(irc, remoteirc, channel)
|
|
if remotechan is None:
|
|
continue
|
|
remoteirc.proto.part(user, remotechan, text)
|
|
if not remoteirc.users[user].channels:
|
|
remoteirc.proto.quit(user, 'Left all shared channels.')
|
|
del relayusers[(irc.name, numeric)][remoteirc.name]
|
|
utils.add_hook(handle_part, 'PART')
|
|
|
|
def handle_messages(irc, numeric, command, args):
|
|
notice = (command in ('NOTICE', 'PYLINK_SELF_NOTICE'))
|
|
target = args['target']
|
|
text = args['text']
|
|
if irc.isInternalClient(numeric) and irc.isInternalClient(target):
|
|
# Drop attempted PMs between internal clients (this shouldn't happen,
|
|
# but whatever).
|
|
return
|
|
|
|
relay = getRelay((irc.name, target))
|
|
remoteusers = relayusers[(irc.name, numeric)]
|
|
|
|
# HACK: Don't break on sending to @#channel or similar. TODO: This should really
|
|
# be handled more neatly in core.
|
|
try:
|
|
prefix, target = target.split('#', 1)
|
|
except ValueError:
|
|
prefix = ''
|
|
else:
|
|
target = '#' + target
|
|
|
|
if utils.isChannel(target):
|
|
for name, remoteirc in world.networkobjects.copy().items():
|
|
real_target = getRemoteChan(irc, remoteirc, target)
|
|
|
|
# Don't relay anything back to the source net, or to disconnected networks
|
|
# and networks without a relay for this channel.
|
|
if irc.name == name or (not remoteirc.connected.is_set()) or (not real_target) \
|
|
or (not irc.connected.is_set()):
|
|
continue
|
|
|
|
user = getRemoteUser(irc, remoteirc, numeric, spawnIfMissing=False)
|
|
|
|
if not user:
|
|
# No relay clone exists for the sender; route the message through our
|
|
# main client.
|
|
if numeric in irc.servers:
|
|
displayedname = irc.servers[numeric].name
|
|
else:
|
|
displayedname = irc.users[numeric].nick
|
|
|
|
real_text = '[from %s/%s] %s' % (displayedname, irc.name, text)
|
|
try:
|
|
user = remoteirc.pseudoclient.uid
|
|
except AttributeError:
|
|
# Remote main client hasn't spawned yet. Drop the message.
|
|
continue
|
|
else:
|
|
real_text = text
|
|
|
|
real_target = prefix + real_target
|
|
log.debug('(%s) relay.handle_messages: sending message to %s from %s on behalf of %s',
|
|
irc.name, real_target, user, numeric)
|
|
if notice:
|
|
remoteirc.proto.notice(user, real_target, real_text)
|
|
else:
|
|
remoteirc.proto.message(user, real_target, real_text)
|
|
|
|
else:
|
|
# Get the real user that the PM was meant for
|
|
origuser = getOrigUser(irc, target)
|
|
if origuser is None: # Not a relay client, return
|
|
return
|
|
homenet, real_target = origuser
|
|
|
|
# For PMs, we must be on a common channel with the target.
|
|
# Otherwise, the sender doesn't have a client representing them
|
|
# on the remote network, and we won't have anything to send our
|
|
# messages from.
|
|
if homenet not in remoteusers.keys():
|
|
irc.msg(numeric, 'Error: You must be in a common channel '
|
|
'with %r in order to send messages.' % \
|
|
irc.users[target].nick, notice=True)
|
|
return
|
|
remoteirc = world.networkobjects[homenet]
|
|
user = getRemoteUser(irc, remoteirc, numeric, spawnIfMissing=False)
|
|
|
|
if notice:
|
|
remoteirc.proto.notice(user, real_target, text)
|
|
else:
|
|
remoteirc.proto.message(user, real_target, text)
|
|
|
|
for cmd in ('PRIVMSG', 'NOTICE', 'PYLINK_SELF_NOTICE', 'PYLINK_SELF_PRIVMSG'):
|
|
utils.add_hook(handle_messages, cmd)
|
|
|
|
def handle_kick(irc, source, command, args):
|
|
channel = args['channel']
|
|
target = args['target']
|
|
text = args['text']
|
|
kicker = source
|
|
relay = getRelay((irc.name, channel))
|
|
|
|
# Don't relay kicks to protected service bots.
|
|
if relay is None or irc.isServiceBot(target):
|
|
return
|
|
|
|
origuser = getOrigUser(irc, target)
|
|
for name, remoteirc in world.networkobjects.copy().items():
|
|
if irc.name == name or not remoteirc.connected.is_set():
|
|
continue
|
|
remotechan = getRemoteChan(irc, remoteirc, channel)
|
|
log.debug('(%s) relay.handle_kick: remotechan for %s on %s is %s', irc.name, channel, name, remotechan)
|
|
if remotechan is None:
|
|
continue
|
|
real_kicker = getRemoteUser(irc, remoteirc, kicker, spawnIfMissing=False)
|
|
log.debug('(%s) relay.handle_kick: real kicker for %s on %s is %s', irc.name, kicker, name, real_kicker)
|
|
if not isRelayClient(irc, target):
|
|
log.debug('(%s) relay.handle_kick: target %s is NOT an internal client', irc.name, target)
|
|
# Both the target and kicker are external clients; i.e.
|
|
# they originate from the same network. We won't have
|
|
# to filter this; the uplink IRCd will handle it appropriately,
|
|
# and we'll just follow.
|
|
real_target = getRemoteUser(irc, remoteirc, target, spawnIfMissing=False)
|
|
log.debug('(%s) relay.handle_kick: real target for %s is %s', irc.name, target, real_target)
|
|
else:
|
|
log.debug('(%s) relay.handle_kick: target %s is an internal client, going to look up the real user', irc.name, target)
|
|
real_target = getOrigUser(irc, target, targetirc=remoteirc)
|
|
if not checkClaim(irc, channel, kicker):
|
|
log.debug('(%s) relay.handle_kick: kicker %s is not opped... We should rejoin the target user %s', irc.name, kicker, real_target)
|
|
# Home network is not in the channel's claim AND the kicker is not
|
|
# opped. We won't propograte the kick then.
|
|
# TODO: make the check slightly more advanced: i.e. halfops can't
|
|
# kick ops, admins can't kick owners, etc.
|
|
modes = getPrefixModes(remoteirc, irc, remotechan, real_target)
|
|
# Join the kicked client back with its respective modes.
|
|
irc.proto.sjoin(irc.sid, channel, [(modes, target)])
|
|
if kicker in irc.users:
|
|
log.info('(%s) relay: Blocked KICK (reason %r) from %s/%s to relay client %s/%s on %s.',
|
|
irc.name, args['text'], irc.users[source].nick, irc.name,
|
|
remoteirc.users[real_target].nick, remoteirc.name, channel)
|
|
irc.msg(kicker, "This channel is claimed; your kick to "
|
|
"%s has been blocked because you are not "
|
|
"(half)opped." % channel, notice=True)
|
|
else:
|
|
log.info('(%s) relay: Blocked KICK (reason %r) from server %s to relay client %s/%s on %s.',
|
|
irc.name, args['text'], irc.servers[source].name,
|
|
remoteirc.users[real_target].nick, remoteirc.name, channel)
|
|
return
|
|
|
|
if not real_target:
|
|
continue
|
|
# Propogate the kick!
|
|
if real_kicker:
|
|
log.debug('(%s) relay.handle_kick: Kicking %s from channel %s via %s on behalf of %s/%s', irc.name, real_target, remotechan,real_kicker, kicker, irc.name)
|
|
remoteirc.proto.kick(real_kicker, remotechan, real_target, args['text'])
|
|
else:
|
|
# Kick originated from a server, or the kicker isn't in any
|
|
# common channels with the target relay network.
|
|
rsid = getRemoteSid(remoteirc, irc)
|
|
log.debug('(%s) relay.handle_kick: Kicking %s from channel %s via %s on behalf of %s/%s', irc.name, real_target, remotechan, rsid, kicker, irc.name)
|
|
try:
|
|
if kicker in irc.servers:
|
|
kname = irc.servers[kicker].name
|
|
else:
|
|
kname = irc.users.get(kicker).nick
|
|
text = "(%s/%s) %s" % (kname, irc.name, args['text'])
|
|
except AttributeError:
|
|
text = "(<unknown kicker>@%s) %s" % (irc.name, args['text'])
|
|
remoteirc.proto.kick(rsid, remotechan, real_target, text)
|
|
|
|
# If the target isn't on any channels, quit them.
|
|
if remoteirc != irc and (not remoteirc.users[real_target].channels) and not origuser:
|
|
del relayusers[(irc.name, target)][remoteirc.name]
|
|
remoteirc.proto.quit(real_target, 'Left all shared channels.')
|
|
|
|
if origuser and not irc.users[target].channels:
|
|
del relayusers[origuser][irc.name]
|
|
irc.proto.quit(target, 'Left all shared channels.')
|
|
|
|
utils.add_hook(handle_kick, 'KICK')
|
|
|
|
def handle_chgclient(irc, source, command, args):
|
|
target = args['target']
|
|
if args.get('newhost'):
|
|
field = 'HOST'
|
|
text = args['newhost']
|
|
elif args.get('newident'):
|
|
field = 'IDENT'
|
|
text = args['newident']
|
|
elif args.get('newgecos'):
|
|
field = 'GECOS'
|
|
text = args['newgecos']
|
|
if field:
|
|
for netname, user in relayusers[(irc.name, target)].items():
|
|
remoteirc = world.networkobjects[netname]
|
|
try:
|
|
if field == 'HOST':
|
|
text = normalizeHost(remoteirc, text)
|
|
remoteirc.proto.updateClient(user, field, text)
|
|
except NotImplementedError: # IRCd doesn't support changing the field we want
|
|
log.debug('(%s) relay.handle_chgclient: Ignoring changing field %r of %s on %s (for %s/%s);'
|
|
' remote IRCd doesn\'t support it', irc.name, field,
|
|
user, netname, target, irc.name)
|
|
continue
|
|
|
|
for c in ('CHGHOST', 'CHGNAME', 'CHGIDENT'):
|
|
utils.add_hook(handle_chgclient, c)
|
|
|
|
def handle_mode(irc, numeric, command, args):
|
|
target = args['target']
|
|
modes = args['modes']
|
|
for name, remoteirc in world.networkobjects.copy().items():
|
|
if irc.name == name or not remoteirc.connected.is_set():
|
|
continue
|
|
|
|
if utils.isChannel(target):
|
|
# Use the old state of the channel to check for CLAIM access.
|
|
oldchan = args.get('oldchan')
|
|
|
|
if checkClaim(irc, target, numeric, chanobj=oldchan):
|
|
remotechan = getRemoteChan(irc, remoteirc, target)
|
|
supported_modes = getSupportedCmodes(irc, remoteirc, target, modes)
|
|
if supported_modes:
|
|
# Check if the sender is a user with a relay client; otherwise relay the mode
|
|
# from the corresponding server.
|
|
u = getRemoteUser(irc, remoteirc, numeric, spawnIfMissing=False)
|
|
if u:
|
|
remoteirc.proto.mode(u, remotechan, supported_modes)
|
|
else:
|
|
rsid = getRemoteSid(remoteirc, irc)
|
|
remoteirc.proto.mode(rsid, remotechan, supported_modes)
|
|
else: # Mode change blocked by CLAIM.
|
|
reversed_modes = irc.reverseModes(target, modes, oldobj=oldchan)
|
|
log.debug('(%s) relay.handle_mode: Reversing mode changes of %r with %r (CLAIM).',
|
|
irc.name, modes, reversed_modes)
|
|
if reversed_modes:
|
|
irc.proto.mode(irc.sid, target, reversed_modes)
|
|
break
|
|
|
|
else:
|
|
# Set hideoper on remote opers, to prevent inflating
|
|
# /lusers and various /stats
|
|
hideoper_mode = remoteirc.umodes.get('hideoper')
|
|
modes = getSupportedUmodes(irc, remoteirc, modes)
|
|
|
|
if hideoper_mode:
|
|
if ('+o', None) in modes:
|
|
modes.append(('+%s' % hideoper_mode, None))
|
|
elif ('-o', None) in modes:
|
|
modes.append(('-%s' % hideoper_mode, None))
|
|
|
|
remoteuser = getRemoteUser(irc, remoteirc, target, spawnIfMissing=False)
|
|
|
|
if remoteuser and modes:
|
|
remoteirc.proto.mode(remoteuser, remoteuser, modes)
|
|
|
|
utils.add_hook(handle_mode, 'MODE')
|
|
|
|
def handle_topic(irc, numeric, command, args):
|
|
channel = args['channel']
|
|
oldtopic = args.get('oldtopic')
|
|
topic = args['text']
|
|
if checkClaim(irc, channel, numeric):
|
|
for name, remoteirc in world.networkobjects.copy().items():
|
|
if irc.name == name or not remoteirc.connected.is_set():
|
|
continue
|
|
|
|
remotechan = getRemoteChan(irc, remoteirc, channel)
|
|
# Don't send if the remote topic is the same as ours.
|
|
if remotechan is None or topic == remoteirc.channels[remotechan].topic:
|
|
continue
|
|
# This might originate from a server too.
|
|
remoteuser = getRemoteUser(irc, remoteirc, numeric, spawnIfMissing=False)
|
|
if remoteuser:
|
|
remoteirc.proto.topic(remoteuser, remotechan, topic)
|
|
else:
|
|
rsid = getRemoteSid(remoteirc, irc)
|
|
remoteirc.proto.topicBurst(rsid, remotechan, topic)
|
|
elif oldtopic: # Topic change blocked by claim.
|
|
irc.proto.topicBurst(irc.sid, channel, oldtopic)
|
|
|
|
utils.add_hook(handle_topic, 'TOPIC')
|
|
|
|
def handle_kill(irc, numeric, command, args):
|
|
target = args['target']
|
|
userdata = args['userdata']
|
|
|
|
# Try to find the original client of the target being killed
|
|
if userdata and hasattr(userdata, 'remote'):
|
|
realuser = userdata.remote
|
|
else:
|
|
realuser = getOrigUser(irc, target)
|
|
|
|
log.debug('(%s) relay.handle_kill: realuser is %r', irc.name, realuser)
|
|
|
|
# Target user was remote:
|
|
if realuser and realuser[0] != irc.name:
|
|
# We don't allow killing over the relay, so we must respawn the affected
|
|
# client and rejoin it to its channels.
|
|
del relayusers[realuser][irc.name]
|
|
remoteirc = world.networkobjects[realuser[0]]
|
|
for remotechan in remoteirc.users[realuser[1]].channels:
|
|
localchan = getRemoteChan(remoteirc, irc, remotechan)
|
|
if localchan:
|
|
modes = getPrefixModes(remoteirc, irc, remotechan, realuser[1])
|
|
log.debug('(%s) relay.handle_kill: userpair: %s, %s', irc.name, modes, realuser)
|
|
client = getRemoteUser(remoteirc, irc, realuser[1])
|
|
irc.proto.sjoin(getRemoteSid(irc, remoteirc), localchan, [(modes, client)])
|
|
|
|
if userdata and numeric in irc.users:
|
|
log.info('(%s) relay.handle_kill: Blocked KILL (reason %r) from %s to relay client %s/%s.',
|
|
irc.name, args['text'], irc.users[numeric].nick,
|
|
remoteirc.users[realuser[1]].nick, realuser[0])
|
|
irc.msg(numeric, "Your kill to %s has been blocked "
|
|
"because PyLink does not allow killing"
|
|
" users over the relay at this time." % \
|
|
userdata.nick, notice=True)
|
|
else:
|
|
log.info('(%s) relay.handle_kill: Blocked KILL (reason %r) from server %s to relay client %s/%s.',
|
|
irc.name, args['text'], irc.servers[numeric].name,
|
|
remoteirc.users[realuser[1]].nick, realuser[0])
|
|
|
|
# Target user was local.
|
|
else:
|
|
# IMPORTANT: some IRCds (charybdis) don't send explicit QUIT messages
|
|
# for locally killed clients, while others (inspircd) do!
|
|
# If we receive a user object in 'userdata' instead of None, it means
|
|
# that the KILL hasn't been handled by a preceding QUIT message.
|
|
if userdata:
|
|
handle_quit(irc, target, 'KILL', {'text': args['text']})
|
|
|
|
utils.add_hook(handle_kill, 'KILL')
|
|
|
|
def handle_away(irc, numeric, command, args):
|
|
for netname, user in relayusers[(irc.name, numeric)].items():
|
|
remoteirc = world.networkobjects[netname]
|
|
remoteirc.proto.away(user, args['text'])
|
|
utils.add_hook(handle_away, 'AWAY')
|
|
|
|
def handle_invite(irc, source, command, args):
|
|
target = args['target']
|
|
channel = args['channel']
|
|
if isRelayClient(irc, target):
|
|
remotenet, remoteuser = getOrigUser(irc, target)
|
|
remoteirc = world.networkobjects[remotenet]
|
|
remotechan = getRemoteChan(irc, remoteirc, channel)
|
|
remotesource = getRemoteUser(irc, remoteirc, source, spawnIfMissing=False)
|
|
if remotesource is None:
|
|
irc.msg(source, 'Error: You must be in a common channel '
|
|
'with %s to invite them to channels.' % \
|
|
irc.users[target].nick,
|
|
notice=True)
|
|
elif remotechan is None:
|
|
irc.msg(source, 'Error: You cannot invite someone to a '
|
|
'channel not on their network!',
|
|
notice=True)
|
|
else:
|
|
remoteirc.proto.invite(remotesource, remoteuser,
|
|
remotechan)
|
|
utils.add_hook(handle_invite, 'INVITE')
|
|
|
|
def handle_endburst(irc, numeric, command, args):
|
|
if numeric == irc.uplink:
|
|
initializeAll(irc)
|
|
utils.add_hook(handle_endburst, "ENDBURST")
|
|
|
|
def handle_disconnect(irc, numeric, command, args):
|
|
"""Handles IRC network disconnections (internal hook)."""
|
|
# Quit all of our users' representations on other nets, and remove
|
|
# them from our relay clients index.
|
|
log.debug('(%s) Grabbing spawnlocks[%s]', irc.name, irc.name)
|
|
with spawnlocks[irc.name]:
|
|
for k, v in relayusers.copy().items():
|
|
if irc.name in v:
|
|
del relayusers[k][irc.name]
|
|
if k[0] == irc.name:
|
|
del relayusers[k]
|
|
|
|
# SQUIT all relay pseudoservers spawned for us, and remove them
|
|
# from our relay subservers index.
|
|
log.debug('(%s) Grabbing spawnlocks_servers[%s]', irc.name, irc.name)
|
|
with spawnlocks_servers[irc.name]:
|
|
for name, ircobj in world.networkobjects.copy().items():
|
|
if name != irc.name:
|
|
try:
|
|
rsid = relayservers[name][irc.name]
|
|
except KeyError:
|
|
continue
|
|
else:
|
|
ircobj.proto.squit(ircobj.sid, rsid, text='Relay network lost connection.')
|
|
|
|
if irc.name in relayservers[name]:
|
|
del relayservers[name][irc.name]
|
|
|
|
del relayservers[irc.name]
|
|
|
|
utils.add_hook(handle_disconnect, "PYLINK_DISCONNECT")
|
|
|
|
def handle_save(irc, numeric, command, args):
|
|
target = args['target']
|
|
realuser = getOrigUser(irc, target)
|
|
log.debug('(%s) relay.handle_save: %r got in a nick collision! Real user: %r',
|
|
irc.name, target, realuser)
|
|
if isRelayClient(irc, target) and realuser:
|
|
# Nick collision!
|
|
# It's one of our relay clients; try to fix our nick to the next
|
|
# available normalized nick.
|
|
remotenet, remoteuser = realuser
|
|
remoteirc = world.networkobjects[remotenet]
|
|
nick = remoteirc.users[remoteuser].nick
|
|
|
|
newnick = normalizeNick(irc, remotenet, nick)
|
|
log.info('(%s) relay.handle_save: SAVE received for relay client %r (%s), fixing nick to %s',
|
|
irc.name, target, nick, newnick)
|
|
irc.proto.nick(target, newnick)
|
|
else:
|
|
# Somebody else on the network (not a PyLink client) had a nick collision;
|
|
# relay this as a nick change appropriately.
|
|
handle_nick(irc, target, 'SAVE', {'oldnick': None, 'newnick': target})
|
|
|
|
utils.add_hook(handle_save, "SAVE")
|
|
|
|
### PUBLIC COMMANDS
|
|
|
|
@utils.add_cmd
|
|
def create(irc, source, args):
|
|
"""<channel>
|
|
|
|
Creates the channel <channel> over the relay."""
|
|
try:
|
|
channel = irc.toLower(args[0])
|
|
except IndexError:
|
|
irc.reply("Error: Not enough arguments. Needs 1: channel.")
|
|
return
|
|
if not utils.isChannel(channel):
|
|
irc.reply('Error: Invalid channel %r.' % channel)
|
|
return
|
|
if source not in irc.channels[channel].users:
|
|
irc.reply('Error: You must be in %r to complete this operation.' % channel)
|
|
return
|
|
irc.checkAuthenticated(source)
|
|
|
|
# Check to see whether the channel requested is already part of a different
|
|
# relay.
|
|
localentry = getRelay((irc.name, channel))
|
|
if localentry:
|
|
irc.reply('Error: Channel %r is already part of a relay.' % channel)
|
|
return
|
|
|
|
creator = irc.getHostmask(source)
|
|
# Create the relay database entry with the (network name, channel name)
|
|
# pair - this is just a dict with various keys.
|
|
db[(irc.name, channel)] = {'claim': [irc.name], 'links': set(),
|
|
'blocked_nets': set(), 'creator': creator,
|
|
'ts': time.time()}
|
|
log.info('(%s) relay: Channel %s created by %s.', irc.name, channel, creator)
|
|
initializeChannel(irc, channel)
|
|
irc.reply('Done.')
|
|
|
|
@utils.add_cmd
|
|
def destroy(irc, source, args):
|
|
"""[<home network>] <channel>
|
|
|
|
Removes <channel> from the relay, delinking all networks linked to it. If <home network> is given and you are logged in as admin, this can also remove relay channels from other networks."""
|
|
try: # Two args were given: first one is network name, second is channel.
|
|
channel = irc.toLower(args[1])
|
|
network = args[0]
|
|
except IndexError:
|
|
try: # One argument was given; assume it's just the channel.
|
|
channel = irc.toLower(args[0])
|
|
network = irc.name
|
|
except IndexError:
|
|
irc.reply("Error: Not enough arguments. Needs 1-2: channel, network (optional).")
|
|
return
|
|
|
|
if not utils.isChannel(channel):
|
|
irc.reply('Error: Invalid channel %r.' % channel)
|
|
return
|
|
|
|
if network == irc.name:
|
|
# If we're destroying a channel on the current network, only oper is needed.
|
|
irc.checkAuthenticated(source)
|
|
else:
|
|
# Otherwise, we'll need to be logged in as admin.
|
|
irc.checkAuthenticated(source, allowOper=False)
|
|
|
|
entry = (network, channel)
|
|
|
|
if entry in db:
|
|
# Iterate over all the channel links and deinitialize them.
|
|
for link in db[entry]['links']:
|
|
removeChannel(world.networkobjects.get(link[0]), link[1])
|
|
removeChannel(world.networkobjects.get(network), channel)
|
|
|
|
del db[entry]
|
|
log.info('(%s) relay: Channel %s destroyed by %s.', irc.name,
|
|
channel, irc.getHostmask(source))
|
|
irc.reply('Done.')
|
|
else:
|
|
irc.reply("Error: No such channel %r exists. If you're trying to delink a channel from "
|
|
"another network, use the DESTROY command." % channel)
|
|
return
|
|
|
|
@utils.add_cmd
|
|
def link(irc, source, args):
|
|
"""<remotenet> <channel> <local channel>
|
|
|
|
Links channel <channel> on <remotenet> over the relay to <local channel>.
|
|
If <local channel> is not specified, it defaults to the same name as <channel>."""
|
|
try:
|
|
channel = irc.toLower(args[1])
|
|
remotenet = args[0]
|
|
except IndexError:
|
|
irc.reply("Error: Not enough arguments. Needs 2-3: remote netname, channel, local channel name (optional).")
|
|
return
|
|
|
|
try:
|
|
localchan = irc.toLower(args[2])
|
|
except IndexError:
|
|
localchan = channel
|
|
|
|
for c in (channel, localchan):
|
|
if not utils.isChannel(c):
|
|
irc.reply('Error: Invalid channel %r.' % c)
|
|
return
|
|
|
|
if remotenet == irc.name:
|
|
irc.reply('Error: Cannot link two channels on the same network.')
|
|
return
|
|
|
|
if source not in irc.channels[localchan].users:
|
|
irc.reply('Error: You must be in %r to complete this operation.' % localchan)
|
|
return
|
|
|
|
irc.checkAuthenticated(source)
|
|
|
|
if remotenet not in world.networkobjects:
|
|
irc.reply('Error: No network named %r exists.' % remotenet)
|
|
return
|
|
localentry = getRelay((irc.name, localchan))
|
|
|
|
if localentry:
|
|
irc.reply('Error: Channel %r is already part of a relay.' % localchan)
|
|
return
|
|
|
|
try:
|
|
entry = db[(remotenet, channel)]
|
|
except KeyError:
|
|
irc.reply('Error: No such relay %r exists.' % channel)
|
|
return
|
|
else:
|
|
if irc.name in entry['blocked_nets']:
|
|
irc.reply('Error: Access denied (target channel is not open to links).')
|
|
return
|
|
for link in entry['links']:
|
|
if link[0] == irc.name:
|
|
irc.reply("Error: Remote channel '%s%s' is already linked here "
|
|
"as %r." % (remotenet, channel, link[1]))
|
|
return
|
|
entry['links'].add((irc.name, localchan))
|
|
log.info('(%s) relay: Channel %s linked to %s%s by %s.', irc.name,
|
|
localchan, remotenet, channel, irc.getHostmask(source))
|
|
initializeChannel(irc, localchan)
|
|
irc.reply('Done.')
|
|
|
|
@utils.add_cmd
|
|
def delink(irc, source, args):
|
|
"""<local channel> [<network>]
|
|
|
|
Delinks channel <local channel>. <network> must and can only be specified if you are on the host network for <local channel>, and allows you to pick which network to delink.
|
|
To remove a relay entirely, use the 'destroy' command instead."""
|
|
try:
|
|
channel = irc.toLower(args[0])
|
|
except IndexError:
|
|
irc.reply("Error: Not enough arguments. Needs 1-2: channel, remote netname (optional).")
|
|
return
|
|
try:
|
|
remotenet = args[1]
|
|
except IndexError:
|
|
remotenet = None
|
|
irc.checkAuthenticated(source)
|
|
if not utils.isChannel(channel):
|
|
irc.reply('Error: Invalid channel %r.' % channel)
|
|
return
|
|
entry = getRelay((irc.name, channel))
|
|
if entry:
|
|
if entry[0] == irc.name: # We own this channel.
|
|
if not remotenet:
|
|
irc.reply("Error: You must select a network to "
|
|
"delink, or use the 'destroy' command to remove "
|
|
"this relay entirely (it was created on the current "
|
|
"network).")
|
|
return
|
|
else:
|
|
for link in db[entry]['links'].copy():
|
|
if link[0] == remotenet:
|
|
removeChannel(world.networkobjects.get(remotenet), link[1])
|
|
db[entry]['links'].remove(link)
|
|
else:
|
|
removeChannel(irc, channel)
|
|
db[entry]['links'].remove((irc.name, channel))
|
|
irc.reply('Done.')
|
|
log.info('(%s) relay: Channel %s delinked from %s%s by %s.', irc.name,
|
|
channel, entry[0], entry[1], irc.getHostmask(source))
|
|
else:
|
|
irc.reply('Error: No such relay %r.' % channel)
|
|
|
|
@utils.add_cmd
|
|
def linked(irc, source, args):
|
|
"""[<network>]
|
|
|
|
Returns a list of channels shared across the relay. If <network> is given, filters output to channels linked to the given network."""
|
|
|
|
# Only show remote networks that are marked as connected.
|
|
remote_networks = [netname for netname, ircobj in world.networkobjects.copy().items()
|
|
if ircobj.connected.is_set()]
|
|
|
|
# But remove the current network from the list, so that it isn't shown twice.
|
|
remote_networks.remove(irc.name)
|
|
|
|
remote_networks.sort()
|
|
|
|
s = 'Connected networks: \x02%s\x02 %s' % (irc.name, ' '.join(remote_networks))
|
|
irc.msg(source, s)
|
|
|
|
net = ''
|
|
try:
|
|
net = args[0]
|
|
except:
|
|
pass
|
|
else:
|
|
irc.msg(source, "Showing channels linked to %s:" % net)
|
|
|
|
# Sort the list of shared channels when displaying
|
|
for k, v in sorted(db.items()):
|
|
|
|
# Skip if we're filtering by network and the network given isn't relayed
|
|
# to the channel.
|
|
if net and not (net == k[0] or net in [link[0] for link in v['links']]):
|
|
continue
|
|
|
|
# Bold each network/channel name pair
|
|
s = '\x02%s%s\x02 ' % k
|
|
remoteirc = world.networkobjects.get(k[0])
|
|
channel = k[1] # Get the channel name from the network/channel pair
|
|
|
|
if remoteirc and channel in remoteirc.channels:
|
|
c = remoteirc.channels[channel]
|
|
if ('s', None) in c.modes or ('p', None) in c.modes:
|
|
# Only show secret channels to opers, and tag them with
|
|
# [secret].
|
|
if irc.isOper(source):
|
|
s += '\x02[secret]\x02 '
|
|
else:
|
|
continue
|
|
|
|
if v['links']: # Join up and output all the linked channel names.
|
|
s += ' '.join([''.join(link) for link in sorted(v['links'])])
|
|
|
|
else: # Unless it's empty; then, well... just say no relays yet.
|
|
s += '(no relays yet)'
|
|
|
|
irc.msg(source, s)
|
|
|
|
if irc.isOper(source):
|
|
s = ''
|
|
|
|
# If the caller is an oper, we can show the hostmasks of people
|
|
# that created all the available channels (Janus does this too!!)
|
|
creator = v.get('creator')
|
|
if creator:
|
|
# But only if the value actually exists (old DBs will have it
|
|
# missing).
|
|
s += ' by \x02%s\x02' % creator
|
|
|
|
# Ditto for creation date
|
|
ts = v.get('ts')
|
|
if ts:
|
|
s += ' on %s' % time.ctime(ts)
|
|
|
|
if s: # Indent to make the list look nicer
|
|
irc.msg(source, ' Channel created%s.' % s)
|
|
|
|
@utils.add_cmd
|
|
def linkacl(irc, source, args):
|
|
"""ALLOW|DENY|LIST <channel> <remotenet>
|
|
|
|
Allows blocking / unblocking certain networks from linking to a relay, based on a blacklist.
|
|
LINKACL LIST returns a list of blocked networks for a channel, while the ALLOW and DENY subcommands allow manipulating this blacklist."""
|
|
missingargs = "Error: Not enough arguments. Needs 2-3: subcommand (ALLOW/DENY/LIST), channel, remote network (for ALLOW/DENY)."
|
|
irc.checkAuthenticated(source)
|
|
try:
|
|
cmd = args[0].lower()
|
|
channel = irc.toLower(args[1])
|
|
except IndexError:
|
|
irc.reply(missingargs)
|
|
return
|
|
if not utils.isChannel(channel):
|
|
irc.reply('Error: Invalid channel %r.' % channel)
|
|
return
|
|
relay = getRelay((irc.name, channel))
|
|
if not relay:
|
|
irc.reply('Error: No such relay %r exists.' % channel)
|
|
return
|
|
if cmd == 'list':
|
|
s = 'Blocked networks for \x02%s\x02: \x02%s\x02' % (channel, ', '.join(db[relay]['blocked_nets']) or '(empty)')
|
|
irc.reply(s)
|
|
return
|
|
|
|
try:
|
|
remotenet = args[2]
|
|
except IndexError:
|
|
irc.reply(missingargs)
|
|
return
|
|
if cmd == 'deny':
|
|
db[relay]['blocked_nets'].add(remotenet)
|
|
irc.reply('Done.')
|
|
elif cmd == 'allow':
|
|
try:
|
|
db[relay]['blocked_nets'].remove(remotenet)
|
|
except KeyError:
|
|
irc.reply('Error: Network %r is not on the blacklist for %r.' % (remotenet, channel))
|
|
else:
|
|
irc.reply('Done.')
|
|
else:
|
|
irc.reply('Error: Unknown subcommand %r: valid ones are ALLOW, DENY, and LIST.' % cmd)
|
|
|
|
@utils.add_cmd
|
|
def showuser(irc, source, args):
|
|
"""<user>
|
|
|
|
Shows relay data about user <user>. This supplements the 'showuser' command in the 'commands' plugin, which provides more general information."""
|
|
try:
|
|
target = args[0]
|
|
except IndexError:
|
|
# No errors here; showuser from the commands plugin already does this
|
|
# for us.
|
|
return
|
|
u = irc.nickToUid(target)
|
|
if u:
|
|
irc.msg(source, "Showing relay information on user \x02%s\x02:" % irc.users[u].nick)
|
|
try:
|
|
userpair = getOrigUser(irc, u) or (irc.name, u)
|
|
remoteusers = relayusers[userpair].items()
|
|
except KeyError:
|
|
pass
|
|
else:
|
|
nicks = []
|
|
if remoteusers:
|
|
nicks.append('%s:\x02%s\x02' % (userpair[0],
|
|
world.networkobjects[userpair[0]].users[userpair[1]].nick))
|
|
for r in remoteusers:
|
|
remotenet, remoteuser = r
|
|
remoteirc = world.networkobjects[remotenet]
|
|
nicks.append('%s:\x02%s\x02' % (remotenet, remoteirc.users[remoteuser].nick))
|
|
irc.msg(source, "\x02Relay nicks\x02: %s" % ', '.join(nicks))
|
|
relaychannels = []
|
|
for ch in irc.users[u].channels:
|
|
relay = getRelay((irc.name, ch))
|
|
if relay:
|
|
relaychannels.append(''.join(relay))
|
|
if relaychannels and (irc.isOper(source) or u == source):
|
|
irc.msg(source, "\x02Relay channels\x02: %s" % ' '.join(relaychannels))
|
|
|
|
@utils.add_cmd
|
|
def save(irc, source, args):
|
|
"""takes no arguments.
|
|
|
|
Saves the relay database to disk."""
|
|
irc.checkAuthenticated(source)
|
|
exportDB()
|
|
irc.reply('Done.')
|
|
|
|
@utils.add_cmd
|
|
def claim(irc, source, args):
|
|
"""<channel> [<comma separated list of networks>]
|
|
|
|
Sets the CLAIM for a channel to a case-sensitive list of networks. If no list of networks is given, shows which networks have claim over the channel. A single hyphen (-) can also be given as a list of networks to remove claim from the channel entirely.
|
|
|
|
CLAIM is a way of enforcing network ownership for a channel, similarly to Janus. Unless the list is empty, only networks on the CLAIM list for a channel (plus the creating network) are allowed to override kicks, mode changes, and topic changes in it - attempts from other networks' opers to do this are simply blocked or reverted."""
|
|
irc.checkAuthenticated(source)
|
|
try:
|
|
channel = irc.toLower(args[0])
|
|
except IndexError:
|
|
irc.reply("Error: Not enough arguments. Needs 1-2: channel, list of networks (optional).")
|
|
return
|
|
|
|
# We override getRelay() here to limit the search to the current network.
|
|
relay = (irc.name, channel)
|
|
if relay not in db:
|
|
irc.reply('Error: No such relay %r exists.' % channel)
|
|
return
|
|
claimed = db[relay]["claim"]
|
|
try:
|
|
nets = args[1].strip()
|
|
except IndexError: # No networks given.
|
|
irc.reply('Channel \x02%s\x02 is claimed by: %s' %
|
|
(channel, ', '.join(claimed) or '\x1D(none)\x1D'))
|
|
else:
|
|
if nets == '-' or not nets:
|
|
claimed = set()
|
|
else:
|
|
claimed = set(nets.split(','))
|
|
db[relay]["claim"] = claimed
|
|
irc.reply('CLAIM for channel \x02%s\x02 set to: %s' %
|
|
(channel, ', '.join(claimed) or '\x1D(none)\x1D'))
|