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relay: always enforce modedelta modes, and prevent them from being unset

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This commit is contained in:
James Lu 2017-12-14 12:42:43 -08:00
parent b2270ca3eb
commit 57a2132d5d
1 changed files with 34 additions and 7 deletions
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41
plugins/relay.py
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@ -1590,7 +1590,7 @@ def handle_mode(irc, numeric, command, args):
target = args['target']
modes = args['modes']
def _handle_mode_loop(irc, remoteirc, numeric, command, args):
def _handle_mode_loop(irc, remoteirc, numeric, command, target, modes):
if irc.is_channel(target):
remotechan = get_remote_channel(irc, remoteirc, target)
if not remotechan:
@ -1646,10 +1646,20 @@ def handle_mode(irc, numeric, command, args):
if remoteuser and modes:
remoteirc.mode(remoteuser, remoteuser, modes)
reversed_modes = []
if irc.is_channel(target):
# Use the old state of the channel to check for CLAIM access.
oldchan = args.get('channeldata')
# Block modedelta modes from being unset by leaf networks
relay_entry = get_relay(irc, target)
if not relay_entry:
modedelta_modes = []
else:
modedelta_modes = db[relay_entry].get('modedelta', [])
modedelta_modes = list(filter(None, [irc.cmodes.get(named_modepair[0])
for named_modepair in modedelta_modes]))
if not check_claim(irc, target, numeric, chanobj=oldchan):
# Mode change blocked by CLAIM.
reversed_modes = irc.reverse_modes(target, modes, oldobj=oldchan)
@ -1667,14 +1677,31 @@ def handle_mode(irc, numeric, command, args):
# Tried to set a list mode, revert
or modepair[0][-1] in irc.cmodes['*A'])
]
modes.clear() # Clear the mode list so nothing is relayed below
if reversed_modes:
log.debug('(%s) relay.handle_mode: Reversing mode changes of %r with %r (CLAIM).',
irc.name, modes, reversed_modes)
irc.mode(irc.sid, target, reversed_modes)
return
for modepair in modes.copy():
log.debug('(%s) relay.handle_mode: checking if modepair %s is in %s',
irc.name, str(modepair), str(modedelta_modes))
if modepair[0][-1] in modedelta_modes:
modes.remove(modepair)
iterate_all(irc, _handle_mode_loop, extra_args=(numeric, command, args))
if relay_entry[0] != irc.name:
# On leaf nets, enforce the modedelta.
reversed_modes += irc.reverse_modes(target, [modepair], oldobj=oldchan)
log.debug('(%s) relay.handle_mode: Reverting change of modedelta mode %s on %s',
irc.name, str(modepair), target)
else:
# On the home net, just don't propagate the mode change.
log.debug('(%s) relay.handle_mode: Not propagating change of modedelta mode %s on %s',
irc.name, str(modepair), target)
if reversed_modes:
log.debug('(%s) relay.handle_mode: Reversing mode changes of %r with %r.',
irc.name, args['modes'], reversed_modes)
irc.mode(irc.sid, target, reversed_modes)
if modes:
iterate_all(irc, _handle_mode_loop, extra_args=(numeric, command, target, modes))
utils.add_hook(handle_mode, 'MODE')