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inspircd: split protocol negotiation handlers into separate functions (#156)
Use the generic handle_events in ts6_common, which passes everything to event handlers appropriately.
This commit is contained in:
James Lu
parent
814ebc9fe0
commit
bb9d87bdca
@ -32,6 +32,8 @@ class InspIRCdProtocol(TS6BaseProtocol):
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self.sidgen = utils.TS6SIDGenerator(self.irc)
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self.uidgen = {}
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### Outgoing commands
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def spawnClient(self, nick, ident='null', host='null', realhost=None, modes=set(),
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server=None, ip='0.0.0.0', realname=None, ts=None, opertype=None,
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manipulatable=False):
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@ -323,6 +325,8 @@ class InspIRCdProtocol(TS6BaseProtocol):
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self._send(source, 'SQUIT %s :%s' % (target, text))
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self.handle_squit(source, 'SQUIT', [target, text])
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### Core / command handlers
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def connect(self):
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"""Initializes a connection to a server."""
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ts = self.irc.start_ts
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@ -337,91 +341,98 @@ class InspIRCdProtocol(TS6BaseProtocol):
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f(':%s BURST %s' % (self.irc.sid, ts))
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f(':%s ENDBURST' % (self.irc.sid))
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def handle_events(self, data):
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"""Event handler for the InspIRCd protocol.
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def handle_capab(self, source, command, args):
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"""
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Handles the CAPAB command, used for capability negotiation with our
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uplink.
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"""
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# 6 CAPAB commands are usually sent on connect: CAPAB START, MODULES,
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# MODSUPPORT, CHANMODES, USERMODES, and CAPABILITIES.
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# The only ones of interest to us are CHANMODES, USERMODES, and
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# CAPABILITIES.
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This passes most commands to the various handle_ABCD() functions
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elsewhere in this module, but also handles commands sent in the
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initial server linking phase."""
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# Each server message looks something like this:
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# :70M FJOIN #chat 1423790411 +AFPfjnt 6:5 7:5 9:5 :v,1SRAAESWE
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# :<sid> <command> <argument1> <argument2> ... :final multi word argument
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args = data.split(" ")
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if not args:
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# No data??
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return
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if args[0] == 'SERVER':
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# <- SERVER whatever.net abcdefgh 0 10X :something
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servername = args[1].lower()
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numeric = args[4]
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if args[2] != self.irc.serverdata['recvpass']:
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# Check if recvpass is correct
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raise ProtocolError('Error: recvpass from uplink server %s does not match configuration!' % servername)
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sdesc = ' '.join(args).split(':', 1)[1]
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self.irc.servers[numeric] = IrcServer(None, servername, desc=sdesc)
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self.irc.uplink = numeric
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return
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elif args[0] == 'CAPAB':
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# Capability negotiation with our uplink
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if args[1] == 'CHANMODES':
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# <- CAPAB CHANMODES :admin=&a allowinvite=A autoop=w ban=b banexception=e blockcolor=c c_registered=r exemptchanops=X filter=g flood=f halfop=%h history=H invex=I inviteonly=i joinflood=j key=k kicknorejoin=J limit=l moderated=m nickflood=F noctcp=C noextmsg=n nokick=Q noknock=K nonick=N nonotice=T official-join=!Y op=@o operonly=O opmoderated=U owner=~q permanent=P private=p redirect=L reginvite=R regmoderated=M secret=s sslonly=z stripcolor=S topiclock=t voice=+v
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if args[0] == 'CHANMODES':
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# <- CAPAB CHANMODES :admin=&a allowinvite=A autoop=w ban=b
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# banexception=e blockcolor=c c_registered=r exemptchanops=X
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# filter=g flood=f halfop=%h history=H invex=I inviteonly=i
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# joinflood=j key=k kicknorejoin=J limit=l moderated=m nickflood=F
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# noctcp=C noextmsg=n nokick=Q noknock=K nonick=N nonotice=T
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# official-join=!Y op=@o operonly=O opmoderated=U owner=~q
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# permanent=P private=p redirect=L reginvite=R regmoderated=M
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# secret=s sslonly=z stripcolor=S topiclock=t voice=+v
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# Named modes are essential for a cross-protocol IRC service. We
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# can use InspIRCd as a model here and assign a similar mode map to our cmodes list.
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for modepair in args[2:]:
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name, char = modepair.split('=')
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if name == 'reginvite': # Reginvite? That's a dumb name.
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name = 'regonly'
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if name == 'founder': # Channel mode +q
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# Founder, owner; same thing. m_customprefix allows you to name it anything you like
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# (the former is config default, but I personally prefer the latter.)
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name = 'owner'
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# We don't really care about mode prefixes; just the mode char
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self.irc.cmodes[name.lstrip(':')] = char[-1]
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elif args[1] == 'USERMODES':
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# <- CAPAB USERMODES :bot=B callerid=g cloak=x deaf_commonchan=c helpop=h hidechans=I hideoper=H invisible=i oper=o regdeaf=R servprotect=k showwhois=W snomask=s u_registered=r u_stripcolor=S wallops=w
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# Ditto above.
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for modepair in args[2:]:
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name, char = modepair.split('=')
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self.irc.umodes[name.lstrip(':')] = char
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elif args[1] == 'CAPABILITIES':
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# <- CAPAB CAPABILITIES :NICKMAX=21 CHANMAX=64 MAXMODES=20 IDENTMAX=11 MAXQUIT=255 MAXTOPIC=307 MAXKICK=255 MAXGECOS=128 MAXAWAY=200 IP6SUPPORT=1 PROTOCOL=1202 PREFIX=(Yqaohv)!~&@%+ CHANMODES=IXbegw,k,FHJLfjl,ACKMNOPQRSTUcimnprstz USERMODES=,,s,BHIRSWcghikorwx GLOBOPS=1 SVSPART=1
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caps = dict([x.lstrip(':').split('=') for x in args[2:]])
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protocol_version = int(caps['PROTOCOL'])
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if protocol_version < 1202:
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raise ProtocolError("Remote protocol version is too old! At least 1202 (InspIRCd 2.0.x) is needed. (got %s)" % protocol_version)
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self.irc.maxnicklen = int(caps['NICKMAX'])
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self.irc.maxchanlen = int(caps['CHANMAX'])
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# Modes are divided into A, B, C, and D classes
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# See http://www.irc.org/tech_docs/005.html
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# Named modes are essential for a cross-protocol IRC service. We
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# can use InspIRCd as a model here and assign a similar mode map to
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# our cmodes list.
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for modepair in args[-1].split():
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name, char = modepair.split('=')
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# FIXME: Find a better way to assign/store this.
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self.irc.cmodes['*A'], self.irc.cmodes['*B'], self.irc.cmodes['*C'], self.irc.cmodes['*D'] \
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= caps['CHANMODES'].split(',')
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self.irc.umodes['*A'], self.irc.umodes['*B'], self.irc.umodes['*C'], self.irc.umodes['*D'] \
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= caps['USERMODES'].split(',')
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prefixsearch = re.search(r'\(([A-Za-z]+)\)(.*)', caps['PREFIX'])
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self.irc.prefixmodes = dict(zip(prefixsearch.group(1), prefixsearch.group(2)))
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log.debug('(%s) self.irc.prefixmodes set to %r', self.irc.name, self.irc.prefixmodes)
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# Sanity check: set this AFTER we fetch the capabilities for the network!
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self.irc.connected.set()
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try:
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args = self.parseTS6Args(args)
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numeric = args[0]
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command = args[1]
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args = args[2:]
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except IndexError:
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return
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if name == 'reginvite': # Reginvite? That's a dumb name.
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name = 'regonly'
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# We will do wildcard event handling here. Unhandled events are just ignored.
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try:
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func = getattr(self, 'handle_'+command.lower())
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except AttributeError: # unhandled event
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pass
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else:
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parsed_args = func(numeric, command, args)
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if parsed_args is not None:
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return [numeric, command, parsed_args]
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if name == 'founder': # Channel mode +q
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# Founder, owner; same thing. m_customprefix allows you to
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# name it anything you like. The former is config default,
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# but I personally prefer the latter.
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name = 'owner'
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# We don't really care about mode prefixes; just the mode char
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self.irc.cmodes[name] = char[-1]
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elif args[0] == 'USERMODES':
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# <- CAPAB USERMODES :bot=B callerid=g cloak=x deaf_commonchan=c
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# helpop=h hidechans=I hideoper=H invisible=i oper=o regdeaf=R
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# servprotect=k showwhois=W snomask=s u_registered=r u_stripcolor=S
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# wallops=w
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# Ditto above.
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for modepair in args[-1].split():
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name, char = modepair.split('=')
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self.irc.umodes[name] = char
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elif args[0] == 'CAPABILITIES':
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# <- CAPAB CAPABILITIES :NICKMAX=21 CHANMAX=64 MAXMODES=20
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# IDENTMAX=11 MAXQUIT=255 MAXTOPIC=307 MAXKICK=255 MAXGECOS=128
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# MAXAWAY=200 IP6SUPPORT=1 PROTOCOL=1202 PREFIX=(Yqaohv)!~&@%+
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# CHANMODES=IXbegw,k,FHJLfjl,ACKMNOPQRSTUcimnprstz
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# USERMODES=,,s,BHIRSWcghikorwx GLOBOPS=1 SVSPART=1
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# First, turn the arguments into a dict
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caps = dict([x.split('=') for x in args[-1].split()])
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# Check the protocol version
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protocol_version = int(caps['PROTOCOL'])
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if protocol_version < 1202:
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raise ProtocolError("Remote protocol version is too old! "
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"At least 1202 (InspIRCd 2.0.x) is "
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"needed. (got %s)" % protocol_version)
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# Store the max nick and channel lengths
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self.irc.maxnicklen = int(caps['NICKMAX'])
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self.irc.maxchanlen = int(caps['CHANMAX'])
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# Modes are divided into A, B, C, and D classes
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# See http://www.irc.org/tech_docs/005.html
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# FIXME: Find a neater way to assign/store this.
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self.irc.cmodes['*A'], self.irc.cmodes['*B'], self.irc.cmodes['*C'], self.irc.cmodes['*D'] \
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= caps['CHANMODES'].split(',')
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self.irc.umodes['*A'], self.irc.umodes['*B'], self.irc.umodes['*C'], self.irc.umodes['*D'] \
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= caps['USERMODES'].split(',')
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# Separate the prefixes field (e.g. "(Yqaohv)!~&@%+") into a
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# dict mapping mode characters to mode prefixes.
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prefixsearch = re.search(r'\(([A-Za-z]+)\)(.*)', caps['PREFIX'])
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self.irc.prefixmodes = dict(zip(prefixsearch.group(1),
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prefixsearch.group(2)))
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log.debug('(%s) self.irc.prefixmodes set to %r', self.irc.name,
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self.irc.prefixmodes)
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# Finally, set the irc.connected (protocol negotiation complete)
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# state to True.
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self.irc.connected.set()
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def handle_ping(self, source, command, args):
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"""Handles incoming PING commands, so we don't time out."""
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@ -477,13 +488,29 @@ class InspIRCdProtocol(TS6BaseProtocol):
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def handle_server(self, numeric, command, args):
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"""Handles incoming SERVER commands (introduction of servers)."""
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# SERVER is sent by our uplink or any other server to introduce others.
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# Initial SERVER command on connect.
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if self.irc.uplink is None:
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# <- SERVER whatever.net abcdefgh 0 10X :some server description
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servername = args[0].lower()
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numeric = args[3]
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if args[1] != self.irc.serverdata['recvpass']:
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# Check if recvpass is correct
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raise ProtocolError('Error: recvpass from uplink server %s does not match configuration!' % servername)
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sdesc = args[-1]
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self.irc.servers[numeric] = IrcServer(None, servername, desc=sdesc)
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self.irc.uplink = numeric
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return
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# Other server introductions.
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# <- :00A SERVER test.server * 1 00C :testing raw message syntax
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# <- :70M SERVER millennium.overdrive.pw * 1 1ML :a relatively long period of time... (Fremont, California)
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servername = args[0].lower()
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sid = args[3]
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sdesc = args[-1]
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self.irc.servers[sid] = IrcServer(numeric, servername, desc=sdesc)
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return {'name': servername, 'sid': args[3], 'text': sdesc}
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def handle_fmode(self, numeric, command, args):
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