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https://github.com/jlu5/PyLink.git
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Merge branch 'mode-rework' into devel
This commit is contained in:
James Lu
commit
9f39e484da
173
classes.py
173
classes.py
@ -558,39 +558,27 @@ class PyLinkNetworkCoreWithUtils(PyLinkNetworkCore):
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# Band-aid patch here to prevent bad bans set by Janus forwarding people into invalid channels.
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return bool(cls._HOSTMASK_RE.match(text) and '#' not in text)
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def parse_modes(self, target, args):
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"""Parses a modestring list into a list of (mode, argument) tuples.
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['+mitl-o', '3', 'person'] => [('+m', None), ('+i', None), ('+t', None), ('+l', '3'), ('-o', 'person')]
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def _parse_modes(self, args, existing, supported_modes, is_channel=False, prefixmodes=None):
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"""
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# http://www.irc.org/tech_docs/005.html
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# A = Mode that adds or removes a nick or address to a list. Always has a parameter.
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# B = Mode that changes a setting and always has a parameter.
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# C = Mode that changes a setting and only has a parameter when set.
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# D = Mode that changes a setting and never has a parameter.
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parse_modes() core.
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args: A mode string or a mode string split by space (type list)
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existing: A set or iterable of existing modes
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supported_modes: a dict of PyLink supported modes (mode names mapping
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to mode chars, with *ABCD keys)
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prefixmodes: a dict of prefix modes (irc.prefixmodes style)
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"""
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prefix = ''
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if isinstance(args, str):
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# If the modestring was given as a string, split it into a list.
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args = args.split()
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assert args, 'No valid modes were supplied!'
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usermodes = not self.is_channel(target)
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prefix = ''
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modestring = args[0]
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args = args[1:]
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if usermodes:
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log.debug('(%s) Using self.umodes for this query: %s', self.name, self.umodes)
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if target not in self.users:
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log.debug('(%s) Possible desync! Mode target %s is not in the users index.', self.name, target)
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return [] # Return an empty mode list
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existing = set(existing)
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supported_modes = self.umodes
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oldmodes = self.users[target].modes
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else:
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log.debug('(%s) Using self.cmodes for this query: %s', self.name, self.cmodes)
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supported_modes = self.cmodes
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oldmodes = self._channels[target].modes
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res = []
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for mode in modestring:
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if mode in '+-':
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@ -601,7 +589,7 @@ class PyLinkNetworkCoreWithUtils(PyLinkNetworkCore):
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arg = None
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log.debug('Current mode: %s%s; args left: %s', prefix, mode, args)
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try:
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if mode in self.prefixmodes and not usermodes:
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if prefixmodes and mode in self.prefixmodes:
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# We're setting a prefix mode on someone (e.g. +o user1)
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log.debug('Mode %s: This mode is a prefix mode.', mode)
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arg = args.pop(0)
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@ -623,15 +611,15 @@ class PyLinkNetworkCoreWithUtils(PyLinkNetworkCore):
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# as a single "*".
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# We'd need to know the real argument of +k for us to
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# be able to unset the mode.
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oldarg = dict(oldmodes).get(mode)
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oldarg = dict(existing).get(mode)
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if oldarg:
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# Set the arg to the old one on the channel.
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arg = oldarg
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log.debug("Mode %s: coersing argument of '*' to %r.", mode, arg)
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log.debug('(%s) parse_modes: checking if +%s %s is in old modes list: %s', self.name, mode, arg, oldmodes)
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log.debug('(%s) parse_modes: checking if +%s %s is in old modes list: %s', self.name, mode, arg, existing)
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if (mode, arg) not in oldmodes:
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if (mode, arg) not in existing:
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# Ignore attempts to unset bans that don't exist.
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log.debug("(%s) parse_modes(): ignoring removal of non-existent list mode +%s %s", self.name, mode, arg)
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continue
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@ -641,32 +629,61 @@ class PyLinkNetworkCoreWithUtils(PyLinkNetworkCore):
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log.debug('Mode %s: Only has parameter when setting.', mode)
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arg = args.pop(0)
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except IndexError:
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log.warning('(%s/%s) Error while parsing mode %r: mode requires an '
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log.warning('(%s) Error while parsing mode %r: mode requires an '
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'argument but none was found. (modestring: %r)',
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self.name, target, mode, modestring)
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self.name, mode, modestring)
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continue # Skip this mode; don't error out completely.
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res.append((prefix + mode, arg))
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newmode = (prefix + mode, arg)
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res.append(newmode)
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# Tentatively apply the new mode to the "existing" mode list.
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existing = self._apply_modes(existing, [newmode], is_channel=is_channel)
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return res
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def apply_modes(self, target, changedmodes):
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"""Takes a list of parsed IRC modes, and applies them on the given target.
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def parse_modes(self, target, args):
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"""Parses a modestring list into a list of (mode, argument) tuples.
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['+mitl-o', '3', 'person'] => [('+m', None), ('+i', None), ('+t', None), ('+l', '3'), ('-o', 'person')]
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"""
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# http://www.irc.org/tech_docs/005.html
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# A = Mode that adds or removes a nick or address to a list. Always has a parameter.
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# B = Mode that changes a setting and always has a parameter.
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# C = Mode that changes a setting and only has a parameter when set.
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# D = Mode that changes a setting and never has a parameter.
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The target can be either a channel or a user; this is handled automatically."""
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usermodes = not self.is_channel(target)
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is_channel = self.is_channel(target)
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if not is_channel:
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log.debug('(%s) Using self.umodes for this query: %s', self.name, self.umodes)
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try:
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if usermodes:
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old_modelist = self.users[target].modes
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supported_modes = self.umodes
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else:
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old_modelist = self._channels[target].modes
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supported_modes = self.cmodes
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except KeyError:
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log.warning('(%s) Possible desync? Mode target %s is unknown.', self.name, target)
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return
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if target not in self.users:
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log.debug('(%s) Possible desync! Mode target %s is not in the users index.', self.name, target)
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return [] # Return an empty mode list
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supported_modes = self.umodes
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oldmodes = self.users[target].modes
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prefixmodes = None
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else:
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log.debug('(%s) Using self.cmodes for this query: %s', self.name, self.cmodes)
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supported_modes = self.cmodes
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oldmodes = self._channels[target].modes
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prefixmodes = self._channels[target].prefixmodes
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return self._parse_modes(args, oldmodes, supported_modes, is_channel=is_channel,
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prefixmodes=prefixmodes)
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def _apply_modes(self, old_modelist, changedmodes, is_channel=False,
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prefixmodes=None):
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"""
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Takes a list of parsed IRC modes, and applies them onto the given target mode list.
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"""
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modelist = set(old_modelist)
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log.debug('(%s) Applying modes %r on %s (initial modelist: %s)', self.name, changedmodes, target, modelist)
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if is_channel:
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supported_modes = self.cmodes
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else:
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supported_modes = self.umodes
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for mode in changedmodes:
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# Chop off the +/- part that parse_modes gives; it's meaningless for a mode list.
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try:
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@ -674,20 +691,21 @@ class PyLinkNetworkCoreWithUtils(PyLinkNetworkCore):
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except IndexError:
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real_mode = mode
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if not usermodes:
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# We only handle +qaohv for now. Iterate over every supported mode:
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# if the IRCd supports this mode and it is the one being set, add/remove
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# the person from the corresponding prefix mode list (e.g. c.prefixmodes['op']
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# for ops).
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for pmode, pmodelist in self._channels[target].prefixmodes.items():
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if pmode in self.cmodes and real_mode[0] == self.cmodes[pmode]:
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log.debug('(%s) Initial prefixmodes list: %s', self.name, pmodelist)
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if mode[0][0] == '+':
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pmodelist.add(mode[1])
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else:
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pmodelist.discard(mode[1])
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if is_channel:
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if prefixmodes is not None:
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# We only handle +qaohv for now. Iterate over every supported mode:
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# if the IRCd supports this mode and it is the one being set, add/remove
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# the person from the corresponding prefix mode list (e.g. c.prefixmodes['op']
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# for ops).
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for pmode, pmodelist in prefixmodes.items():
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if pmode in supported_modes and real_mode[0] == supported_modes[pmode]:
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log.debug('(%s) Initial prefixmodes list (%s): %s', self.name, pmode, pmodelist)
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if mode[0][0] == '+':
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pmodelist.add(mode[1])
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else:
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pmodelist.discard(mode[1])
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log.debug('(%s) Final prefixmodes list: %s', self.name, pmodelist)
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log.debug('(%s) Final prefixmodes list (%s): %s', self.name, pmode, pmodelist)
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if real_mode[0] in self.prefixmodes:
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# Don't add prefix modes to Channel.modes; they belong in the
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@ -697,20 +715,20 @@ class PyLinkNetworkCoreWithUtils(PyLinkNetworkCore):
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continue
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if mode[0][0] != '-':
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log.debug('(%s) Adding mode %r on %s', self.name, real_mode, modelist)
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# We're adding a mode
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existing = [m for m in modelist if m[0] == real_mode[0] and m[1] != real_mode[1]]
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if existing and real_mode[1] and real_mode[0] not in self.cmodes['*A']:
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if existing and real_mode[1] and real_mode[0] not in supported_modes['*A']:
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# The mode we're setting takes a parameter, but is not a list mode (like +beI).
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# Therefore, only one version of it can exist at a time, and we must remove
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# any old modepairs using the same letter. Otherwise, we'll get duplicates when,
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# for example, someone sets mode "+l 30" on a channel already set "+l 25".
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log.debug('(%s) Old modes for mode %r exist on %s, removing them: %s',
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self.name, real_mode, target, str(existing))
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log.debug('(%s) Old modes for mode %r exist in %s, removing them: %s',
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self.name, real_mode, modelist, str(existing))
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[modelist.discard(oldmode) for oldmode in existing]
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modelist.add(real_mode)
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log.debug('(%s) Adding mode %r on %s', self.name, real_mode, target)
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else:
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log.debug('(%s) Removing mode %r on %s', self.name, real_mode, target)
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log.debug('(%s) Removing mode %r from %s', self.name, real_mode, modelist)
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# We're removing a mode
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if real_mode[1] is None:
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# We're removing a mode that only takes arguments when setting.
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@ -722,13 +740,36 @@ class PyLinkNetworkCoreWithUtils(PyLinkNetworkCore):
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else:
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modelist.discard(real_mode)
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log.debug('(%s) Final modelist: %s', self.name, modelist)
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return modelist
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def apply_modes(self, target, changedmodes):
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"""Takes a list of parsed IRC modes, and applies them on the given target.
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The target can be either a channel or a user; this is handled automatically."""
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is_channel = self.is_channel(target)
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prefixmodes = None
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try:
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if usermodes:
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self.users[target].modes = modelist
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if is_channel:
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c = self._channels[target]
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old_modelist = c.modes
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prefixmodes = c.prefixmodes
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else:
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self._channels[target].modes = modelist
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old_modelist = self.users[target].modes
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except KeyError:
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log.warning("(%s) Invalid MODE target %s (usermodes=%s)", self.name, target, usermodes)
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log.warning('(%s) Possible desync? Mode target %s is unknown.', self.name, target)
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return
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modelist = self._apply_modes(old_modelist, changedmodes, is_channel=is_channel,
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prefixmodes=prefixmodes)
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try:
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if is_channel:
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self._channels[target].modes = modelist
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else:
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self.users[target].modes = modelist
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except KeyError:
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log.warning("(%s) Invalid MODE target %s (is_channel=%s)", self.name, target, is_channel)
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@staticmethod
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def _flip(mode):
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