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unreal: stricter protocol negotiation (check needed capabilities)

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This commit is contained in:
James Lu 2015-09-05 11:40:54 -07:00
parent a96826273f
commit cae4c60b56
2 changed files with 26 additions and 2 deletions
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4
classes.py
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@ -58,6 +58,10 @@ class Irc():
# UID generators, for servers that need it
self.uidgen = {}
# Local data for the IRC object, which protocol modules may use for
# initialization, etc.
self.protodata = {}
def __init__(self, netname, proto):
# Initialize some variables
self.name = netname.lower()

24
protocols/unreal.py
View File

@ -124,10 +124,18 @@ def handle_pong(irc, source, command, args):
irc.lastping = time.time()
def handle_server(irc, numeric, command, args):
# <- SERVER unreal.midnight.vpn 1 :U2351-Fhin6OoEM UnrealIRCd test server
# <- SERVER unreal.midnight.vpn 1 :UnrealIRCd test server
sname = args[0]
# TODO: handle server introductions from other servers
# TODO: handle introductions for other servers
if numeric == irc.uplink:
for cap in _neededCaps:
if cap not in irc.protodata:
raise ProtocolError("Not all required capabilities were met "
"by the remote server. Your version of UnrealIRCd "
"is probably too old! (Got: %s, needed: %s)" %
(sorted(irc.protodata.keys()),
sorted(_neededCaps)))
irc.servers[numeric] = IrcServer(None, sname)
else:
raise NotImplementedError
@ -141,6 +149,7 @@ _unrealCmodes = {'l': 'limit', 'c': 'blockcolor', 'G': 'censor',
'C': 'noctcp', 'O': 'operonly', 'S': 'stripcolor',
'm': 'moderated', 'K': 'noknock', 'o': 'op', 'v': 'voice',
'I': 'invex', 't': 'topiclock'}
_neededCaps = ["VL", "SID", "CHANMODES", "NOQUIT", "SJ3"]
def handle_protoctl(irc, numeric, command, args):
# <- PROTOCTL NOQUIT NICKv2 SJOIN SJOIN2 UMODE2 VL SJ3 TKLEXT TKLEXT2 NICKIP ESVID
# <- PROTOCTL CHANMODES=beI,k,l,psmntirzMQNRTOVKDdGPZSCc NICKCHARS= SID=001 MLOCK TS=1441314501 EXTSWHOIS
@ -148,12 +157,23 @@ def handle_protoctl(irc, numeric, command, args):
for cap in args:
if cap.startswith('SID'):
irc.uplink = cap.split('=', 1)[1]
irc.protodata['SID'] = True
elif cap.startswith('CHANMODES'):
cmodes = cap.split('=', 1)[1]
irc.cmodes['*A'], irc.cmodes['*B'], irc.cmodes['*C'], irc.cmodes['*D'] = cmodes.split(',')
for m in cmodes:
if m in _unrealCmodes:
irc.cmodes[_unrealCmodes[m]] = m
irc.protodata['CHANMODES'] = True
# Because more than one PROTOCTL line is sent, we have to delay the
# check to see whether our needed capabilities are all there...
# That's done by handle_server(), which comes right after PROTOCTL.
elif cap == 'VL':
irc.protodata['VL'] = True
elif cap == 'NOQUIT':
irc.protodata['NOQUIT'] = True
elif cap == 'SJ3':
irc.protodata['SJ3'] = True
def _sidToServer(irc, sname):
"""<irc object> <server name>
@ -185,7 +205,7 @@ def handle_events(irc, data):
numeric = _sidToServer(irc, sender) or utils.nickToUid(irc, sender) or \
sender
else:
# Raw command w/o explicit sender, assume it's being sent by our uplink.
# Raw command without an explicit sender; assume it's being sent by our uplink.
numeric = irc.uplink
command = args[0]
args = args[1:]