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reverse_modes: treat mode arguments case insensitively

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This commit is contained in:
James Lu 2019-08-26 14:46:06 -07:00
parent 0533827ddf
commit b685f416f6
2 changed files with 19 additions and 9 deletions
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23
classes.py
View File

@ -1157,12 +1157,18 @@ class PyLinkNetworkCoreWithUtils(PyLinkNetworkCore):
possible_modes['*A'] += ''.join(self.prefixmodes)
for name, userlist in c.prefixmodes.items():
try:
oldmodes.update([(self.cmodes[name], u) for u in userlist])
# Add prefix modes to the list of old modes
oldmodes |= {(self.cmodes[name], u) for u in userlist}
except KeyError:
continue
else:
oldmodes = self.users[target].modes
oldmodes = set(self.users[target].modes)
possible_modes = self.umodes
oldmodes_mapping = dict(oldmodes)
oldmodes_lower = {(modepair[0], self.to_lower(modepair[1]) if modepair[1] else modepair[1])
for modepair in oldmodes}
newmodes = []
log.debug('(%s) reverse_modes: old/current mode list for %s is: %s', self.name,
target, oldmodes)
@ -1177,24 +1183,29 @@ class PyLinkNetworkCoreWithUtils(PyLinkNetworkCore):
# We need to look at the current mode list to reset modes that take arguments
# For example, trying to bounce +l 30 on a channel that had +l 50 set should
# give "+l 50" and not "-l".
oldarg = [m for m in oldmodes if m[0] == mchar]
oldarg = oldmodes_mapping.get(mchar)
if oldarg: # Old mode argument for this mode existed, use that.
oldarg = oldarg[0]
mpair = ('+%s' % oldarg[0], oldarg[1])
mpair = ('+%s' % mchar, oldarg)
else: # Not found, flip the mode then.
# Mode takes no arguments when unsetting.
if mchar in possible_modes['*C'] and char[0] != '-':
arg = None
mpair = (self._flip(char), arg)
else:
mpair = (self._flip(char), arg)
if arg is not None:
arg = self.to_lower(arg)
if char[0] != '-' and (mchar, arg) in oldmodes:
# Mode is already set.
log.debug("(%s) reverse_modes: skipping reversing '%s %s' with %s since we're "
"setting a mode that's already set.", self.name, char, arg, mpair)
continue
elif char[0] == '-' and (mchar, arg) not in oldmodes and mchar in possible_modes['*A']:
# We're unsetting a prefix mode that was never set - don't set it in response!
# We're unsetting a list or prefix mode that was never set - don't set it in response!
# TS6 IRCds lacks server-side verification for this and can cause annoying mode floods.
log.debug("(%s) reverse_modes: skipping reversing '%s %s' with %s since it "
"wasn't previously set.", self.name, char, arg, mpair)

5
test/protocol_test_fixture.py
View File

@ -681,11 +681,10 @@ class BaseProtocolTest(unittest.TestCase):
c.modes = {('t', None), ('n', None), ('l', '50')}
out = self.p.reverse_modes('#foobar', [('+l', '100')])
self.assertEqual(out, [('+l', '50')], "Setting +l should reset original mode")
out = self.p.reverse_modes('#foobar', [('-l', None)])
self.assertEqual(out, [('+l', '50')], "Setting +l should reset original mode")
self.assertEqual(out, [('+l', '50')], "Unsetting +l should reset original mode")
out = self.p.reverse_modes('#foobar', [('+l', '50')])
self.assertEqual(out, [], "Setting +l with original value is no-op")
@ -700,7 +699,7 @@ class BaseProtocolTest(unittest.TestCase):
u = self._make_user('nick', uid='user')
u.channels.add(c)
c.users.add(u)
c.prefixmodes['op'].add(u)
c.prefixmodes['op'].add(u.uid)
out = self.p.reverse_modes('#foobar', '-o user')
self.assertEqual(out, '+o user')