# -*- coding: utf8 -*- ### # Copyright (c) 2002-2005, Jeremiah Fincher # Copyright (c) 2014, James McCoy # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: # # * Redistributions of source code must retain the above copyright notice, # this list of conditions, and the following disclaimer. # * Redistributions in binary form must reproduce the above copyright notice, # this list of conditions, and the following disclaimer in the # documentation and/or other materials provided with the distribution. # * Neither the name of the author of this software nor the name of # contributors to this software may be used to endorse or promote products # derived from this software without specific prior written consent. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. ### """ This module contains the basic callbacks for handling PRIVMSGs. """ import re import copy import time from . import shlex import codecs import getopt import inspect from . import (conf, ircdb, irclib, ircmsgs, ircutils, log, registry, utils, world) from .utils import minisix from .utils.iter import any, all from .i18n import PluginInternationalization _ = PluginInternationalization() def _addressed(nick, msg, prefixChars=None, nicks=None, prefixStrings=None, whenAddressedByNick=None, whenAddressedByNickAtEnd=None): def get(group): if ircutils.isChannel(target): group = group.get(target) return group() def stripPrefixStrings(payload): for prefixString in prefixStrings: if payload.startswith(prefixString): payload = payload[len(prefixString):].lstrip() return payload assert msg.command == 'PRIVMSG' (target, payload) = msg.args if not payload: return '' if prefixChars is None: prefixChars = get(conf.supybot.reply.whenAddressedBy.chars) if whenAddressedByNick is None: whenAddressedByNick = get(conf.supybot.reply.whenAddressedBy.nick) if whenAddressedByNickAtEnd is None: r = conf.supybot.reply.whenAddressedBy.nick.atEnd whenAddressedByNickAtEnd = get(r) if prefixStrings is None: prefixStrings = get(conf.supybot.reply.whenAddressedBy.strings) # We have to check this before nicks -- try "@google supybot" with supybot # and whenAddressedBy.nick.atEnd on to see why. if any(payload.startswith, prefixStrings): return stripPrefixStrings(payload) elif payload[0] in prefixChars: return payload[1:].strip() if nicks is None: nicks = get(conf.supybot.reply.whenAddressedBy.nicks) nicks = list(map(ircutils.toLower, nicks)) else: nicks = list(nicks) # Just in case. nicks.insert(0, ircutils.toLower(nick)) # Ok, let's see if it's a private message. if ircutils.nickEqual(target, nick): payload = stripPrefixStrings(payload) while payload and payload[0] in prefixChars: payload = payload[1:].lstrip() return payload # Ok, not private. Does it start with our nick? elif whenAddressedByNick: for nick in nicks: lowered = ircutils.toLower(payload) if lowered.startswith(nick): try: (maybeNick, rest) = payload.split(None, 1) toContinue = False while not ircutils.isNick(maybeNick, strictRfc=True): if maybeNick[-1].isalnum(): toContinue = True break maybeNick = maybeNick[:-1] if toContinue: continue if ircutils.nickEqual(maybeNick, nick): return rest else: continue except ValueError: # split didn't work. continue elif whenAddressedByNickAtEnd and lowered.endswith(nick): rest = payload[:-len(nick)] possiblePayload = rest.rstrip(' \t,;') if possiblePayload != rest: # There should be some separator between the nick and the # previous alphanumeric character. return possiblePayload if get(conf.supybot.reply.whenNotAddressed): return payload else: return '' def addressed(nick, msg, **kwargs): """If msg is addressed to 'name', returns the portion after the address. Otherwise returns the empty string. """ payload = msg.addressed if payload is not None: return payload else: payload = _addressed(nick, msg, **kwargs) msg.tag('addressed', payload) return payload def canonicalName(command, preserve_spaces=False): """Turn a command into its canonical form. Currently, this makes everything lowercase and removes all dashes and underscores. """ if minisix.PY2 and isinstance(command, unicode): command = command.encode('utf-8') elif minisix.PY3 and isinstance(command, bytes): command = command.decode() special = '\t-_' if not preserve_spaces: special += ' ' reAppend = '' while command and command[-1] in special: reAppend = command[-1] + reAppend command = command[:-1] return ''.join([x for x in command if x not in special]).lower() + reAppend def reply(*args, **kwargs): warnings.warn('callbacks.reply is deprecated. Use irc.reply instead.', DeprecationWarning) return _makeReply(dynamic.irc, *args, **kwargs) def _makeReply(irc, msg, s, prefixNick=None, private=None, notice=None, to=None, action=None, error=False, stripCtcp=True): msg.tag('repliedTo') # Ok, let's make the target: # XXX This isn't entirely right. Consider to=#foo, private=True. target = ircutils.replyTo(msg) def isPublic(s): return irc.isChannel(irc.stripChannelPrefix(s)) if to is not None and isPublic(to): target = to if isPublic(target): channel = irc.stripChannelPrefix(target) else: channel = None if notice is None: notice = conf.get(conf.supybot.reply.withNotice, channel=channel, network=irc.network) if private is None: private = conf.get(conf.supybot.reply.inPrivate, channel=channel, network=irc.network) if prefixNick is None: prefixNick = conf.get(conf.supybot.reply.withNickPrefix, channel=channel, network=irc.network) if error: notice =conf.get(conf.supybot.reply.error.withNotice, channel=channel, network=irc.network) or notice private=conf.get(conf.supybot.reply.error.inPrivate, channel=channel, network=irc.network) or private s = _('Error: ') + s if private: prefixNick = False if to is None: target = msg.nick else: target = to if action: prefixNick = False if to is None: to = msg.nick if stripCtcp: s = s.strip('\x01') # Ok, now let's make the payload: s = ircutils.safeArgument(s) if not s and not action: s = _('Error: I tried to send you an empty message.') if prefixNick and isPublic(target): # Let's may sure we don't do, "#channel: foo.". if not isPublic(to): s = '%s: %s' % (to, s) if not isPublic(target): if conf.supybot.reply.withNoticeWhenPrivate(): notice = True # And now, let's decide whether it's a PRIVMSG or a NOTICE. msgmaker = ircmsgs.privmsg if notice: msgmaker = ircmsgs.notice # We don't use elif here because actions can't be sent as NOTICEs. if action: msgmaker = ircmsgs.action # Finally, we'll return the actual message. ret = msgmaker(target, s) ret.tag('inReplyTo', msg) return ret def error(*args, **kwargs): warnings.warn('callbacks.error is deprecated. Use irc.error instead.', DeprecationWarning) return _makeErrorReply(dynamic.irc, *args, **kwargs) def _makeErrorReply(irc, msg, s, **kwargs): """Makes an error reply to msg with the appropriate error payload.""" kwargs['error'] = True msg.tag('isError') return _makeReply(irc, msg, s, **kwargs) def getHelp(method, name=None, doc=None): if name is None: name = method.__name__ if doc is None: if method.__doc__ is None: doclines = ['This command has no help. Complain to the author.'] else: doclines = method.__doc__.splitlines() else: doclines = doc.splitlines() s = '%s %s' % (name, doclines.pop(0)) if doclines: help = ' '.join(doclines) s = '(%s) -- %s' % (ircutils.bold(s), help) return utils.str.normalizeWhitespace(s) def getSyntax(method, name=None, doc=None): if name is None: name = method.__name__ if doc is None: doclines = method.__doc__.splitlines() else: doclines = doc.splitlines() return '%s %s' % (name, doclines[0]) class Error(Exception): """Generic class for errors in Privmsg callbacks.""" pass class ArgumentError(Error): """The bot replies with a help message when this is raised.""" pass class SilentError(Error): """An error that we should not notify the user.""" pass class Tokenizer(object): # This will be used as a global environment to evaluate strings in. # Evaluation is, of course, necessary in order to allow escaped # characters to be properly handled. # # These are the characters valid in a token. Everything printable except # double-quote, left-bracket, and right-bracket. separators = '\x00\r\n \t' def __init__(self, brackets='', pipe=False, quotes='"'): if brackets: self.separators += brackets self.left = brackets[0] self.right = brackets[1] else: self.left = '' self.right = '' self.pipe = pipe if self.pipe: self.separators += '|' self.quotes = quotes self.separators += quotes def _handleToken(self, token): if token[0] == token[-1] and token[0] in self.quotes: token = token[1:-1] # FIXME: No need to tell you this is a hack. # It has to handle both IRC commands and serialized configuration. # # Whoever you are, if you make a single modification to this # code, TEST the code with Python 2 & 3, both with the unit # tests and on IRC with this: @echo "好" if minisix.PY2: try: token = token.encode('utf8').decode('string_escape') token = token.decode('utf8') except: token = token.decode('string_escape') else: token = codecs.getencoder('utf8')(token)[0] token = codecs.getdecoder('unicode_escape')(token)[0] try: token = token.encode('iso-8859-1').decode() except: # Prevent issue with tokens like '"\\x80"'. pass return token def _insideBrackets(self, lexer): ret = [] while True: token = lexer.get_token() if not token: raise SyntaxError(_('Missing "%s". You may want to ' 'quote your arguments with double ' 'quotes in order to prevent extra ' 'brackets from being evaluated ' 'as nested commands.') % self.right) elif token == self.right: return ret elif token == self.left: ret.append(self._insideBrackets(lexer)) else: ret.append(self._handleToken(token)) return ret def tokenize(self, s): lexer = shlex.shlex(minisix.io.StringIO(s)) lexer.commenters = '' lexer.quotes = self.quotes lexer.separators = self.separators args = [] ends = [] while True: token = lexer.get_token() if not token: break elif token == '|' and self.pipe: # The "and self.pipe" might seem redundant here, but it's there # for strings like 'foo | bar', where a pipe stands alone as a # token, but shouldn't be treated specially. if not args: raise SyntaxError(_('"|" with nothing preceding. I ' 'obviously can\'t do a pipe with ' 'nothing before the |.')) ends.append(args) args = [] elif token == self.left: args.append(self._insideBrackets(lexer)) elif token == self.right: raise SyntaxError(_('Spurious "%s". You may want to ' 'quote your arguments with double ' 'quotes in order to prevent extra ' 'brackets from being evaluated ' 'as nested commands.') % self.right) else: args.append(self._handleToken(token)) if ends: if not args: raise SyntaxError(_('"|" with nothing following. I ' 'obviously can\'t do a pipe with ' 'nothing after the |.')) args.append(ends.pop()) while ends: args[-1].append(ends.pop()) return args def tokenize(s, channel=None, network=None): """A utility function to create a Tokenizer and tokenize a string.""" pipe = False brackets = '' nested = conf.supybot.commands.nested if nested(): brackets = nested.brackets.getSpecific(network, channel)() if conf.get(nested.pipeSyntax, channel=channel, network=network): # No nesting, no pipe. pipe = True quotes = conf.supybot.commands.quotes.getSpecific(network, channel)() try: ret = Tokenizer(brackets=brackets,pipe=pipe,quotes=quotes).tokenize(s) return ret except ValueError as e: raise SyntaxError(str(e)) def formatCommand(command): return ' '.join(command) def checkCommandCapability(msg, cb, commandName): plugin = cb.name().lower() if not isinstance(commandName, minisix.string_types): assert commandName[0] == plugin, ('checkCommandCapability no longer ' 'accepts command names that do not start with the callback\'s ' 'name (%s): %s') % (plugin, commandName) commandName = '.'.join(commandName) def checkCapability(capability): assert ircdb.isAntiCapability(capability) if ircdb.checkCapability(msg.prefix, capability): log.info('Preventing %s from calling %s because of %s.', msg.prefix, commandName, capability) raise RuntimeError(capability) try: antiCommand = ircdb.makeAntiCapability(commandName) checkCapability(antiCommand) checkAtEnd = [commandName] default = conf.supybot.capabilities.default() if msg.channel: channel = msg.channel checkCapability(ircdb.makeChannelCapability(channel, antiCommand)) chanCommand = ircdb.makeChannelCapability(channel, commandName) checkAtEnd += [chanCommand] default &= ircdb.channels.getChannel(channel).defaultAllow return not (default or \ any(lambda x: ircdb.checkCapability(msg.prefix, x), checkAtEnd)) except RuntimeError as e: s = ircdb.unAntiCapability(str(e)) return s class RichReplyMethods(object): """This is a mixin so these replies need only be defined once. It operates under several assumptions, including the fact that 'self' is an Irc object of some sort and there is a self.msg that is an IrcMsg.""" def __makeReply(self, prefix, s): if s: s = '%s %s' % (prefix, s) else: s = prefix return ircutils.standardSubstitute(self, self.msg, s) def _getConfig(self, wrapper): return conf.get(wrapper, channel=self.msg.channel, network=self.irc.network) def replySuccess(self, s='', **kwargs): v = self._getConfig(conf.supybot.replies.success) if v: s = self.__makeReply(v, s) return self.reply(s, **kwargs) else: self.noReply() def replyError(self, s='', **kwargs): v = self._getConfig(conf.supybot.replies.error) if 'msg' in kwargs: msg = kwargs['msg'] if ircdb.checkCapability(msg.prefix, 'owner'): v = self._getConfig(conf.supybot.replies.errorOwner) s = self.__makeReply(v, s) return self.reply(s, **kwargs) def _getTarget(self, to=None): """Compute the target according to self.to, the provided to, and self.private, and return it. Mainly used by reply methods.""" # FIXME: Don't set self.to. # I still set it to be sure I don't introduce a regression, # but it does not make sense for .reply() and .replies() to # change the state of this Irc object. if to is not None: self.to = self.to or to target = self.private and self.to or self.msg.args[0] return target def replies(self, L, prefixer=None, joiner=None, onlyPrefixFirst=False, oneToOne=None, **kwargs): if prefixer is None: prefixer = '' if joiner is None: joiner = utils.str.commaAndify if isinstance(prefixer, minisix.string_types): prefixer = prefixer.__add__ if isinstance(joiner, minisix.string_types): joiner = joiner.join to = self._getTarget(kwargs.get('to')) if oneToOne is None: # Can be True, False, or None if self.irc.isChannel(to): oneToOne = conf.get(conf.supybot.reply.oneToOne, channel=to, network=self.irc.network) else: oneToOne = conf.supybot.reply.oneToOne() if oneToOne: return self.reply(prefixer(joiner(L)), **kwargs) else: msg = None first = True for s in L: if onlyPrefixFirst: if first: first = False msg = self.reply(prefixer(s), **kwargs) else: msg = self.reply(s, **kwargs) else: msg = self.reply(prefixer(s), **kwargs) return msg def noReply(self, msg=None): self.repliedTo = True def _error(self, s, Raise=False, **kwargs): if Raise: raise Error(s) else: return self.error(s, **kwargs) def errorNoCapability(self, capability, s='', **kwargs): if 'Raise' not in kwargs: kwargs['Raise'] = True log.warning('Denying %s for lacking %q capability.', self.msg.prefix, capability) # noCapability means "don't send a specific capability error # message" not "don't send a capability error message at all", like # one would think if self._getConfig(conf.supybot.reply.error.noCapability) or \ capability in conf.supybot.capabilities.private(): v = self._getConfig(conf.supybot.replies.genericNoCapability) else: v = self._getConfig(conf.supybot.replies.noCapability) try: v %= capability except TypeError: # No %s in string pass s = self.__makeReply(v, s) if s: return self._error(s, **kwargs) elif kwargs['Raise']: raise Error() def errorPossibleBug(self, s='', **kwargs): v = self._getConfig(conf.supybot.replies.possibleBug) if s: s += ' (%s)' % v else: s = v return self._error(s, **kwargs) def errorNotRegistered(self, s='', **kwargs): v = self._getConfig(conf.supybot.replies.notRegistered) return self._error(self.__makeReply(v, s), **kwargs) def errorNoUser(self, s='', name='that user', **kwargs): if 'Raise' not in kwargs: kwargs['Raise'] = True v = self._getConfig(conf.supybot.replies.noUser) try: v = v % name except TypeError: log.warning('supybot.replies.noUser should have one "%s" in it.') return self._error(self.__makeReply(v, s), **kwargs) def errorRequiresPrivacy(self, s='', **kwargs): v = self._getConfig(conf.supybot.replies.requiresPrivacy) return self._error(self.__makeReply(v, s), **kwargs) def errorInvalid(self, what, given=None, s='', repr=True, **kwargs): if given is not None: if repr: given = _repr(given) else: given = '"%s"' % given v = _('%s is not a valid %s.') % (given, what) else: v = _('That\'s not a valid %s.') % what if 'Raise' not in kwargs: kwargs['Raise'] = True if s: v += ' ' + s return self._error(v, **kwargs) _repr = repr class ReplyIrcProxy(RichReplyMethods): """This class is a thin wrapper around an irclib.Irc object that gives it the reply() and error() methods (as well as everything in RichReplyMethods, based on those two).""" def __init__(self, irc, msg): self.irc = irc self.msg = msg self.getRealIrc()._setMsgChannel(self.msg) def getRealIrc(self): """Returns the real irclib.Irc object underlying this proxy chain.""" if isinstance(self.irc, irclib.Irc): return self.irc else: return self.irc.getRealIrc() # This should make us be considered equal to our irclib.Irc object for # hashing; an important thing (no more "too many open files" exceptions :)) def __hash__(self): return hash(self.getRealIrc()) def __eq__(self, other): return self.getRealIrc() == other __req__ = __eq__ def __ne__(self, other): return not (self == other) __rne__ = __ne__ def error(self, s, msg=None, **kwargs): if 'Raise' in kwargs and kwargs['Raise']: if s: raise Error(s) else: raise ArgumentError if msg is None: msg = self.msg m = _makeErrorReply(self, msg, s, **kwargs) self.irc.queueMsg(m) return m def reply(self, s, msg=None, **kwargs): if msg is None: msg = self.msg assert not isinstance(s, ircmsgs.IrcMsg), \ 'Old code alert: there is no longer a "msg" argument to reply.' kwargs.pop('noLengthCheck', None) m = _makeReply(self, msg, s, **kwargs) self.irc.queueMsg(m) return m def __getattr__(self, attr): return getattr(self.irc, attr) SimpleProxy = ReplyIrcProxy # Backwards-compatibility class NestedCommandsIrcProxy(ReplyIrcProxy): "A proxy object to allow proper nesting of commands (even threaded ones)." _mores = ircutils.IrcDict() def __init__(self, irc, msg, args, nested=0): assert isinstance(args, list), 'Args should be a list, not a string.' super(NestedCommandsIrcProxy, self).__init__(irc, msg) self.nested = nested self.repliedTo = False if not self.nested and isinstance(irc, self.__class__): # This means we were given an NestedCommandsIrcProxy instead of an # irclib.Irc, and so we're obviously nested. But nested wasn't # set! So we take our given Irc's nested value. self.nested += irc.nested maxNesting = conf.supybot.commands.nested.maximum() if maxNesting and self.nested > maxNesting: log.warning('%s attempted more than %s levels of nesting.', self.msg.prefix, maxNesting) self.error(_('You\'ve attempted more nesting than is ' 'currently allowed on this bot.')) return # The deepcopy here is necessary for Scheduler; it re-runs already # tokenized commands. There's a possibility a simple copy[:] would # work, but we're being careful. self.args = copy.deepcopy(args) self.counter = 0 self._resetReplyAttributes() if not args: self.finalEvaled = True self._callInvalidCommands() else: self.finalEvaled = False world.commandsProcessed += 1 self.evalArgs() def __eq__(self, other): return other == self.getRealIrc() def __hash__(self): return hash(self.getRealIrc()) def _resetReplyAttributes(self): self.to = None self.action = None self.notice = None self.private = None self.noLengthCheck = None if self.msg.channel: self.prefixNick = conf.get(conf.supybot.reply.withNickPrefix, channel=self.msg.channel, network=self.irc.network) else: self.prefixNick = conf.supybot.reply.withNickPrefix() def evalArgs(self, withClass=None): while self.counter < len(self.args): self.repliedTo = False if isinstance(self.args[self.counter], minisix.string_types): # If it's a string, just go to the next arg. There is no # evaluation to be done for strings. If, at some point, # we decided to, say, convert every string using # ircutils.standardSubstitute, this would be where we would # probably put it. self.counter += 1 else: assert isinstance(self.args[self.counter], list) # It's a list. So we spawn another NestedCommandsIrcProxy # to evaluate its args. When that class has finished # evaluating its args, it will call our reply method, which # will subsequently call this function again, and we'll # pick up where we left off via self.counter. cls = withClass or self.__class__ cls(self, self.msg, self.args[self.counter], nested=self.nested+1) # We have to return here because the new NestedCommandsIrcProxy # might not have called our reply method instantly, since # its command might be threaded. So (obviously) we can't # just fall through to self.finalEval. return # Once all the list args are evaluated, we then evaluate our own # list of args, since we're assured that they're all strings now. assert all(lambda x: isinstance(x, minisix.string_types), self.args) self.finalEval() def _callInvalidCommands(self): log.debug('Calling invalidCommands.') threaded = False cbs = [] for cb in self.irc.callbacks: if hasattr(cb, 'invalidCommand'): cbs.append(cb) threaded = threaded or cb.threaded def callInvalidCommands(): self.repliedTo = False for cb in cbs: log.debug('Calling %s.invalidCommand.', cb.name()) try: cb.invalidCommand(self, self.msg, self.args) except Error as e: self.error(str(e)) except Exception as e: log.exception('Uncaught exception in %s.invalidCommand.', cb.name()) log.debug('Finished calling %s.invalidCommand.', cb.name()) if self.repliedTo: log.debug('Done calling invalidCommands: %s.',cb.name()) return if threaded: name = 'Thread #%s (for invalidCommands)' % world.threadsSpawned t = world.SupyThread(target=callInvalidCommands, name=name) t.setDaemon(True) t.start() else: callInvalidCommands() def findCallbacksForArgs(self, args): """Returns a two-tuple of (command, plugins) that has the command (a list of strings) and the plugins for which it was a command.""" assert isinstance(args, list) args = list(map(canonicalName, args)) cbs = [] maxL = [] for cb in self.irc.callbacks: if not hasattr(cb, 'getCommand'): continue L = cb.getCommand(args) #log.debug('%s.getCommand(%r) returned %r', cb.name(), args, L) if L and L >= maxL: maxL = L cbs.append((cb, L)) assert isinstance(L, list), \ 'getCommand now returns a list, not a method.' assert utils.iter.startswith(L, args), \ 'getCommand must return a prefix of the args given. ' \ '(args given: %r, returned: %r)' % (args, L) log.debug('findCallbacksForArgs: %r', cbs) cbs = [cb for (cb, L) in cbs if L == maxL] if len(maxL) == 1: # Special case: one arg determines the callback. In this case, we # have to check, in order: # 1. Whether the arg is the same as the name of a callback. This # callback would then win. for cb in cbs: if cb.canonicalName() == maxL[0]: return (maxL, [cb]) # 2. Whether a defaultplugin is defined. defaultPlugins = conf.supybot.commands.defaultPlugins try: defaultPlugin = defaultPlugins.get(maxL[0])() log.debug('defaultPlugin: %r', defaultPlugin) if defaultPlugin: cb = self.irc.getCallback(defaultPlugin) if cb in cbs: # This is just a sanity check, but there's a small # possibility that a default plugin for a command # is configured to point to a plugin that doesn't # actually have that command. return (maxL, [cb]) except registry.NonExistentRegistryEntry: pass # 3. Whether an importantPlugin is one of the responses. important = defaultPlugins.importantPlugins() important = list(map(canonicalName, important)) importants = [] for cb in cbs: if cb.canonicalName() in important: importants.append(cb) if len(importants) == 1: return (maxL, importants) return (maxL, cbs) def finalEval(self): # Now that we've already iterated through our args and made sure # that any list of args was evaluated (by spawning another # NestedCommandsIrcProxy to evaluated it into a string), we can finally # evaluated our own list of arguments. assert not self.finalEvaled, 'finalEval called twice.' self.finalEvaled = True # Now, the way we call a command is we iterate over the loaded pluings, # asking each one if the list of args we have interests it. The # way we do that is by calling getCommand on the plugin. # The plugin will return a list of args which it considers to be # "interesting." We will then give our args to the plugin which # has the *longest* list. The reason we pick the longest list is # that it seems reasonable that the longest the list, the more # specific the command is. That is, given a list of length X, a list # of length X+1 would be even more specific (assuming that both lists # used the same prefix. Of course, if two plugins return a list of the # same length, we'll just error out with a message about ambiguity. (command, cbs) = self.findCallbacksForArgs(self.args) if not cbs: # We used to handle addressedRegexps here, but I think we'll let # them handle themselves in getCommand. They can always just # return the full list of args as their "command". self._callInvalidCommands() elif len(cbs) > 1: names = sorted([cb.name() for cb in cbs]) command = formatCommand(command) self.error(format(_('The command %q is available in the %L ' 'plugins. Please specify the plugin ' 'whose command you wish to call by using ' 'its name as a command before %q.'), command, names, command)) else: cb = cbs[0] args = self.args[len(command):] if world.isMainThread() and \ (cb.threaded or conf.supybot.debug.threadAllCommands()): t = CommandThread(target=cb._callCommand, args=(command, self, self.msg, args)) t.start() else: cb._callCommand(command, self, self.msg, args) def reply(self, s, noLengthCheck=False, prefixNick=None, action=None, private=None, notice=None, to=None, msg=None, sendImmediately=False, stripCtcp=True): """ Keyword arguments: * `noLengthCheck=False`: True if the length shouldn't be checked (used for 'more' handling) * `prefixNick=True`: False if the nick shouldn't be prefixed to the reply. * `action=False`: True if the reply should be an action. * `private=False`: True if the reply should be in private. * `notice=False`: True if the reply should be noticed when the bot is configured to do so. * `to=`: The nick or channel the reply should go to. Defaults to msg.args[0] (or msg.nick if private) * `sendImmediately=False`: True if the reply should use sendMsg() which bypasses conf.supybot.protocols.irc.throttleTime and gets sent before any queued messages """ # These use and or or based on whether or not they default to True or # False. Those that default to True use and; those that default to # False use or. assert not isinstance(s, ircmsgs.IrcMsg), \ 'Old code alert: there is no longer a "msg" argument to reply.' self.repliedTo = True if sendImmediately: sendMsg = self.irc.sendMsg else: sendMsg = self.irc.queueMsg if msg is None: msg = self.msg if prefixNick is not None: self.prefixNick = prefixNick if action is not None: self.action = self.action or action if action: self.prefixNick = False if notice is not None: self.notice = self.notice or notice if private is not None: self.private = self.private or private target = self._getTarget(to) # action=True implies noLengthCheck=True and prefixNick=False self.noLengthCheck=noLengthCheck or self.noLengthCheck or self.action if not isinstance(s, minisix.string_types): # avoid trying to str() unicode s = str(s) # Allow non-string esses. if self.finalEvaled: try: if isinstance(self.irc, self.__class__): s = s[:conf.supybot.reply.maximumLength()] return self.irc.reply(s, to=self.to, notice=self.notice, action=self.action, private=self.private, prefixNick=self.prefixNick, noLengthCheck=self.noLengthCheck, stripCtcp=stripCtcp) elif self.noLengthCheck: # noLengthCheck only matters to NestedCommandsIrcProxy, so # it's not used here. Just in case you were wondering. m = _makeReply(self, msg, s, to=self.to, notice=self.notice, action=self.action, private=self.private, prefixNick=self.prefixNick, stripCtcp=stripCtcp) sendMsg(m) return m else: s = ircutils.safeArgument(s) allowedLength = conf.get(conf.supybot.reply.mores.length, channel=target, network=self.irc.network) if not allowedLength: # 0 indicates this. allowedLength = (512 - len(':') - len(self.irc.prefix) - len(' PRIVMSG ') - len(target) - len(' :') - len('\r\n') ) if self.prefixNick: allowedLength -= len(msg.nick) + len(': ') maximumMores = conf.get(conf.supybot.reply.mores.maximum, channel=target, network=self.irc.network) maximumLength = allowedLength * maximumMores if len(s) > maximumLength: log.warning('Truncating to %s bytes from %s bytes.', maximumLength, len(s)) s = s[:maximumLength] s_size = len(s.encode()) if minisix.PY3 else len(s) if s_size <= allowedLength or \ not conf.get(conf.supybot.reply.mores, channel=target, network=self.irc.network): # There's no need for action=self.action here because # action implies noLengthCheck, which has already been # handled. Let's stick an assert in here just in case. assert not self.action m = _makeReply(self, msg, s, to=self.to, notice=self.notice, private=self.private, prefixNick=self.prefixNick, stripCtcp=stripCtcp) sendMsg(m) return m # The '(XX more messages)' may have not the same # length in the current locale allowedLength -= len(_('(XX more messages)')) + 1 # bold msgs = ircutils.wrap(s, allowedLength) msgs.reverse() instant = conf.get(conf.supybot.reply.mores.instant, channel=target, network=self.irc.network) while instant > 1 and msgs: instant -= 1 response = msgs.pop() m = _makeReply(self, msg, response, to=self.to, notice=self.notice, private=self.private, prefixNick=self.prefixNick, stripCtcp=stripCtcp) sendMsg(m) # XXX We should somehow allow these to be returned, but # until someone complains, we'll be fine :) We # can't return from here, though, for obvious # reasons. # return m if not msgs: return response = msgs.pop() if msgs: if len(msgs) == 1: more = _('more message') else: more = _('more messages') n = ircutils.bold('(%i %s)' % (len(msgs), more)) response = '%s %s' % (response, n) prefix = msg.prefix if self.to and ircutils.isNick(self.to): try: state = self.getRealIrc().state prefix = state.nickToHostmask(self.to) except KeyError: pass # We'll leave it as it is. mask = prefix.split('!', 1)[1] self._mores[mask] = msgs public = bool(self.msg.channel) private = self.private or not public self._mores[msg.nick] = (private, msgs) m = _makeReply(self, msg, response, to=self.to, action=self.action, notice=self.notice, private=self.private, prefixNick=self.prefixNick, stripCtcp=stripCtcp) sendMsg(m) return m finally: self._resetReplyAttributes() else: if msg.ignored: # Since the final reply string is constructed via # ' '.join(self.args), the args index for ignored commands # needs to be popped to avoid extra spaces in the final reply. self.args.pop(self.counter) msg.tag('ignored', False) else: self.args[self.counter] = s self.evalArgs() def noReply(self, msg=None): if msg is None: msg = self.msg super(NestedCommandsIrcProxy, self).noReply(msg=msg) if self.finalEvaled: if isinstance(self.irc, NestedCommandsIrcProxy): self.irc.noReply(msg=msg) else: msg.tag('ignored', True) else: self.args.pop(self.counter) msg.tag('ignored', False) self.evalArgs() def replies(self, L, prefixer=None, joiner=None, onlyPrefixFirst=False, to=None, oneToOne=None, **kwargs): if not self.finalEvaled and oneToOne is None: oneToOne = True return super(NestedCommandsIrcProxy, self).replies(L, prefixer=prefixer, joiner=joiner, onlyPrefixFirst=onlyPrefixFirst, to=to, oneToOne=oneToOne, **kwargs) def error(self, s='', Raise=False, **kwargs): self.repliedTo = True if Raise: if s: raise Error(s) else: raise ArgumentError if s: if not isinstance(self.irc, irclib.Irc): return self.irc.error(s, **kwargs) else: m = _makeErrorReply(self, self.msg, s, **kwargs) self.irc.queueMsg(m) return m else: raise ArgumentError def __getattr__(self, attr): return getattr(self.irc, attr) IrcObjectProxy = NestedCommandsIrcProxy class CommandThread(world.SupyThread): """Just does some extra logging and error-recovery for commands that need to run in threads. """ def __init__(self, target=None, args=(), kwargs={}): self.command = args[0] self.cb = target.__self__ threadName = 'Thread #%s (for %s.%s)' % (world.threadsSpawned, self.cb.name(), self.command) log.debug('Spawning thread %s (args: %r)', threadName, args) self.__parent = super(CommandThread, self) self.__parent.__init__(target=target, name=threadName, args=args, kwargs=kwargs) self.setDaemon(True) self.originalThreaded = self.cb.threaded self.cb.threaded = True def run(self): try: self.__parent.run() finally: self.cb.threaded = self.originalThreaded class CommandProcess(world.SupyProcess): """Just does some extra logging and error-recovery for commands that need to run in processes. """ def __init__(self, target=None, args=(), kwargs={}): pn = kwargs.pop('pn', 'Unknown') cn = kwargs.pop('cn', 'unknown') procName = 'Process #%s (for %s.%s)' % (world.processesSpawned, pn, cn) log.debug('Spawning process %s (args: %r)', procName, args) self.__parent = super(CommandProcess, self) self.__parent.__init__(target=target, name=procName, args=args, kwargs=kwargs) def run(self): self.__parent.run() class CanonicalString(registry.NormalizedString): def normalize(self, s): return canonicalName(s) class CanonicalNameSet(utils.NormalizingSet): def normalize(self, s): return canonicalName(s) class CanonicalNameDict(utils.InsensitivePreservingDict): def key(self, s): return canonicalName(s) class Disabled(registry.SpaceSeparatedListOf): sorted = True Value = CanonicalString List = CanonicalNameSet conf.registerGlobalValue(conf.supybot.commands, 'disabled', Disabled([], _("""Determines what commands are currently disabled. Such commands will not appear in command lists, etc. They will appear not even to exist."""))) class DisabledCommands(object): def __init__(self): self.d = CanonicalNameDict() for name in conf.supybot.commands.disabled(): if '.' in name: (plugin, command) = name.split('.', 1) if command in self.d: if self.d[command] is not None: self.d[command].add(plugin) else: self.d[command] = CanonicalNameSet([plugin]) else: self.d[name] = None def disabled(self, command, plugin=None): if command in self.d: if self.d[command] is None: return True elif plugin in self.d[command]: return True return False def add(self, command, plugin=None): if plugin is None: self.d[command] = None else: if command in self.d: if self.d[command] is not None: self.d[command].add(plugin) else: self.d[command] = CanonicalNameSet([plugin]) def remove(self, command, plugin=None): if plugin is None: del self.d[command] else: if self.d[command] is not None: self.d[command].remove(plugin) class BasePlugin(object): def __init__(self, *args, **kwargs): self.cbs = [] for attr in dir(self): if attr != canonicalName(attr): continue obj = getattr(self, attr) if isinstance(obj, type) and issubclass(obj, BasePlugin): cb = obj(*args, **kwargs) setattr(self, attr, cb) self.cbs.append(cb) cb.log = log.getPluginLogger('%s.%s' % (self.name(),cb.name())) super(BasePlugin, self).__init__() class MetaSynchronizedAndFirewalled(log.MetaFirewall, utils.python.MetaSynchronized): pass SynchronizedAndFirewalled = MetaSynchronizedAndFirewalled( 'SynchronizedAndFirewalled', (), {}) class Commands(BasePlugin, SynchronizedAndFirewalled): __synchronized__ = ( '__call__', 'callCommand', 'invalidCommand', ) # For a while, a comment stood here to say, "Eventually callCommand." But # that's wrong, because we can't do generic error handling in this # callCommand -- plugins need to be able to override callCommand and do # error handling there (see the Web plugin for an example). __firewalled__ = {'isCommand': None, '_callCommand': None} commandArgs = ['self', 'irc', 'msg', 'args'] # These must be class-scope, so all plugins use the same one. _disabled = DisabledCommands() pre_command_callbacks = [] def name(self): return self.__class__.__name__ def canonicalName(self): return canonicalName(self.name()) def isDisabled(self, command): return self._disabled.disabled(command, self.name()) def isCommandMethod(self, name): """Returns whether a given method name is a command in this plugin.""" # This function is ugly, but I don't want users to call methods like # doPrivmsg or __init__ or whatever, and this is good to stop them. # Don't normalize this name: consider outFilter(self, irc, msg). # name = canonicalName(name) if self.isDisabled(name): return False if name != canonicalName(name): return False if hasattr(self, name): method = getattr(self, name) if inspect.ismethod(method): code = method.__func__.__code__ return inspect.getargs(code)[0] == self.commandArgs else: return False else: return False def isCommand(self, command): """Convenience, backwards-compatibility, semi-deprecated.""" if isinstance(command, minisix.string_types): return self.isCommandMethod(command) else: # Since we're doing a little type dispatching here, let's not be # too liberal. assert isinstance(command, list) return self.getCommand(command) == command def getCommand(self, args, stripOwnName=True): assert args == list(map(canonicalName, args)) first = args[0] for cb in self.cbs: if first == cb.canonicalName(): return cb.getCommand(args) if first == self.canonicalName() and len(args) > 1 and \ stripOwnName: ret = self.getCommand(args[1:], stripOwnName=False) if ret: return [first] + ret if self.isCommandMethod(first): return [first] return [] def getCommandMethod(self, command): """Gets the given command from this plugin.""" #print '*** %s.getCommandMethod(%r)' % (self.name(), command) assert not isinstance(command, minisix.string_types) assert command == list(map(canonicalName, command)) assert self.getCommand(command) == command for cb in self.cbs: if command[0] == cb.canonicalName(): return cb.getCommandMethod(command) if len(command) > 1: assert command[0] == self.canonicalName() return self.getCommandMethod(command[1:]) else: method = getattr(self, command[0]) if inspect.ismethod(method): code = method.__func__.__code__ if inspect.getargs(code)[0] == self.commandArgs: return method else: raise AttributeError def listCommands(self, pluginCommands=[]): commands = set(pluginCommands) for s in dir(self): if self.isCommandMethod(s): commands.add(s) for cb in self.cbs: name = cb.canonicalName() for command in cb.listCommands(): if command == name: commands.add(command) else: commands.add(' '.join([name, command])) L = list(commands) L.sort() return L def callCommand(self, command, irc, msg, *args, **kwargs): # We run all callbacks before checking if one of them returned True if any(bool, list(cb(self, command, irc, msg, *args, **kwargs) for cb in self.pre_command_callbacks)): return method = self.getCommandMethod(command) method(irc, msg, *args, **kwargs) def _callCommand(self, command, irc, msg, *args, **kwargs): if irc.nick == msg.args[0]: self.log.info('%s called in private by %q.', formatCommand(command), msg.prefix) else: self.log.info('%s called on %s by %q.', formatCommand(command), msg.args[0], msg.prefix) try: if len(command) == 1 or command[0] != self.canonicalName(): fullCommandName = [self.canonicalName()] + command else: fullCommandName = command # Let "P" be the plugin and "X Y" the command name. The # fullCommandName is "P X Y" # check "Y" cap = checkCommandCapability(msg, self, command[-1]) if cap: irc.errorNoCapability(cap) return # check "P", "P.X", and "P.X.Y" prefix = [] for name in fullCommandName: prefix.append(name) cap = checkCommandCapability(msg, self, prefix) if cap: irc.errorNoCapability(cap) return try: self.callingCommand = command self.callCommand(command, irc, msg, *args, **kwargs) finally: self.callingCommand = None except SilentError: pass except (getopt.GetoptError, ArgumentError) as e: self.log.debug('Got %s, giving argument error.', utils.exnToString(e)) help = self.getCommandHelp(command) if 'command has no help.' in help: # Note: this case will never happen, unless 'checkDoc' is set # to False. irc.error(_('Invalid arguments for %s.') % formatCommand(command)) else: irc.reply(help) except (SyntaxError, Error) as e: self.log.debug('Error return: %s', utils.exnToString(e)) irc.error(str(e)) except Exception as e: self.log.exception('Uncaught exception in %s.', command) if conf.supybot.reply.error.detailed(): irc.error(utils.exnToString(e)) else: irc.replyError(msg=msg) def getCommandHelp(self, command, simpleSyntax=None): method = self.getCommandMethod(command) help = getHelp chan = None net = None if dynamic.msg is not None: chan = dynamic.msg.channel if dynamic.irc is not None: net = dynamic.irc.network if simpleSyntax is None: simpleSyntax = conf.get(conf.supybot.reply.showSimpleSyntax, channel=chan, network=net) if simpleSyntax: help = getSyntax if hasattr(method, '__doc__'): return help(method, name=formatCommand(command)) else: return format(_('The %q command has no help.'), formatCommand(command)) class PluginMixin(BasePlugin, irclib.IrcCallback): public = True alwaysCall = () threaded = False noIgnore = False classModule = None Proxy = NestedCommandsIrcProxy def __init__(self, irc): myName = self.name() self.log = log.getPluginLogger(myName) self.__parent = super(PluginMixin, self) self.__parent.__init__(irc) # We can't do this because of the specialness that Owner and Misc do. # I guess plugin authors will have to get the capitalization right. # self.callAfter = map(str.lower, self.callAfter) # self.callBefore = map(str.lower, self.callBefore) def canonicalName(self): return canonicalName(self.name()) def __call__(self, irc, msg): irc = SimpleProxy(irc, msg) if msg.command == 'PRIVMSG': if hasattr(self.noIgnore, '__call__'): noIgnore = self.noIgnore(irc, msg) else: noIgnore = self.noIgnore if noIgnore or \ not ircdb.checkIgnored(msg.prefix, msg.channel) or \ not ircutils.isUserHostmask(msg.prefix): # Some services impl. self.__parent.__call__(irc, msg) else: self.__parent.__call__(irc, msg) def registryValue(self, name, channel=None, network=None, value=True): if isinstance(network, bool): # Network-unaware plugin that uses 'value' as a positional # argument. (network, value) = (value, network) plugin = self.name() group = conf.supybot.plugins.get(plugin) names = registry.split(name) for name in names: group = group.get(name) if channel or network: group = group.getSpecific(network=network, channel=channel) if value: return group() else: return group def setRegistryValue(self, name, value, channel=None, network=None): plugin = self.name() group = conf.supybot.plugins.get(plugin) names = registry.split(name) for name in names: group = group.get(name) if network: group = group.get(':' + network) if channel: group = group.get(channel) group.setValue(value) def userValue(self, name, prefixOrName, default=None): try: id = str(ircdb.users.getUserId(prefixOrName)) except KeyError: return None plugin = self.name() group = conf.users.plugins.get(plugin) names = registry.split(name) for name in names: group = group.get(name) return group.get(id)() def setUserValue(self, name, prefixOrName, value, ignoreNoUser=True, setValue=True): try: id = str(ircdb.users.getUserId(prefixOrName)) except KeyError: if ignoreNoUser: return else: raise plugin = self.name() group = conf.users.plugins.get(plugin) names = registry.split(name) for name in names: group = group.get(name) group = group.get(id) if setValue: group.setValue(value) else: group.set(value) def getPluginHelp(self): if hasattr(self, '__doc__'): return self.__doc__ else: return None class Plugin(PluginMixin, Commands): pass Privmsg = Plugin # Backwards compatibility. class PluginRegexp(Plugin): """Same as Plugin, except allows the user to also include regexp-based callbacks. All regexp-based callbacks must be specified in the set (or list) attribute "regexps", "addressedRegexps", or "unaddressedRegexps" depending on whether they should always be triggered, triggered only when the bot is addressed, or triggered only when the bot isn't addressed. """ flags = re.I regexps = () """'regexps' methods are called whether the message is addressed or not.""" addressedRegexps = () """'addressedRegexps' methods are called only when the message is addressed, and then, only with the payload (i.e., what is returned from the 'addressed' function.""" unaddressedRegexps = () """'unaddressedRegexps' methods are called only when the message is *not* addressed.""" Proxy = SimpleProxy def __init__(self, irc): self.__parent = super(PluginRegexp, self) self.__parent.__init__(irc) self.res = [] self.addressedRes = [] self.unaddressedRes = [] for name in self.regexps: method = getattr(self, name) r = re.compile(method.__doc__, self.flags) self.res.append((r, name)) for name in self.addressedRegexps: method = getattr(self, name) r = re.compile(method.__doc__, self.flags) self.addressedRes.append((r, name)) for name in self.unaddressedRegexps: method = getattr(self, name) r = re.compile(method.__doc__, self.flags) self.unaddressedRes.append((r, name)) def _callRegexp(self, name, irc, msg, m): method = getattr(self, name) try: method(irc, msg, m) except Error as e: irc.error(str(e)) except Exception as e: self.log.exception('Uncaught exception in _callRegexp:') def invalidCommand(self, irc, msg, tokens): s = ' '.join(tokens) for (r, name) in self.addressedRes: for m in r.finditer(s): self._callRegexp(name, irc, msg, m) def doPrivmsg(self, irc, msg): if msg.isError: return proxy = self.Proxy(irc, msg) if not msg.addressed: for (r, name) in self.unaddressedRes: for m in r.finditer(msg.args[1]): self._callRegexp(name, proxy, msg, m) for (r, name) in self.res: for m in r.finditer(msg.args[1]): self._callRegexp(name, proxy, msg, m) PrivmsgCommandAndRegexp = PluginRegexp # vim:set shiftwidth=4 softtabstop=4 expandtab textwidth=79: