コード例 #1
0
ファイル: channel.py プロジェクト: ivucica/jjigw
 def __init__(self, session, name):
     self.__logger = logging.getLogger("jjigw.Channel")
     if not channel_re.match(name):
         raise ValueError, "Bad channel name"
     self.name = name
     self.session = session
     self.state = None
     self.room_jid = None
     self.config = session.network.get_channel_config(name)
     if self.config and self.config.encoding:
         self.encoding = self.config.encoding
     else:
         self.encoding = session.default_encoding
     self.modes = {}
     self.users = [self.session.user]
     self.muc = 0
     self.requests = RequestQueue(10)
コード例 #2
0
ファイル: channel.py プロジェクト: AdamPrzybyla/jjigw
 def __init__(self,session,name):
     self.__logger=logging.getLogger("jjigw.Channel")
     if not channel_re.match(name):
         raise ValueError,"Bad channel name"
     self.name=name
     self.session=session
     self.state=None
     self.room_jid=None
     self.config=session.network.get_channel_config(name)
     if self.config and self.config.encoding:
         self.encoding=self.config.encoding
     else:
         self.encoding=session.default_encoding
     self.modes={}
     self.users=[self.session.user]
     self.muc=0
     self.requests=RequestQueue(10)
コード例 #3
0
ファイル: channel.py プロジェクト: AdamPrzybyla/jjigw
class Channel:
    toggle_modes="aimnqpsrt"
    arg_modes="kl"
    multiarg_modes="OovbeI"
    def __init__(self,session,name):
        self.__logger=logging.getLogger("jjigw.Channel")
        if not channel_re.match(name):
            raise ValueError,"Bad channel name"
        self.name=name
        self.session=session
        self.state=None
        self.room_jid=None
        self.config=session.network.get_channel_config(name)
        if self.config and self.config.encoding:
            self.encoding=self.config.encoding
        else:
            self.encoding=session.default_encoding
        self.modes={}
        self.users=[self.session.user]
        self.muc=0
        self.requests=RequestQueue(10)

    def sync_user(self,user,status=None):
        if user.channels.has_key(normalize(self.name)):
            if user not in self.users:
                self.users.append(user)
        else:
            for m in self.multiarg_modes:
                ul=self.modes.get(m,[])
                if user in ul:
                    ul.remove(user)
            if user in self.users:
                self.users.remove(user)
                self.send_notice_message(u"%s has quit"
                        % (unicode(user.nick,self.encoding,"replace"),))
        if self.state:
            p=self.get_user_presence(user,status=status)
            self.session.component.send(p)

    def send_notice_message(self,msg,not_in_muc=1):
        if not self.state or (self.muc and not_in_muc):
            return
        m=Message(from_jid=self.room_jid.bare(),to_jid=self.session.jid,stanza_type="groupchat",body=msg)
        self.session.component.send(m)

    def join(self,stanza):
        if self.state:
            self.__logger.debug("Channel %r not in the initial state, not joining!" % (self.name,))
            p=stanza.make_error_response(stanza,"bad-request")
            self.session.component.send(p)
            return
        self.room_jid=stanza.get_to()
        self.__logger.debug("Joining channel %r" % (self.name,))
        self.session.send("JOIN %s" % (self.name,))
        self.requests.add("JOIN",stanza)
        self.state="join"
        if stanza.get_join_info():
            self.muc=1

    def leave(self,stanza):
        status=stanza.get_status()
        if not self.state:
            self.__logger.debug("Channel %r in the initial state - nothing to do." % (self.name,))
        else:
            if not status:
                self.session.send("PART %s" % (self.name,))
            else:
                self.session.send("PART %s :%s" % (self.name,
                        status.encode(self.encoding,"replace")))
            self.state=None
        p=MucPresence(stanza_type="unavailable",from_jid=stanza.get_to(),to_jid=stanza.get_from(),status=status)
        self.session.component.send(p)
        for u in self.users:
            u.leave_channel(self)
        self.state=None

    def prefix_to_jid(self,prefix):
        if "!" in prefix:
            return self.nick_to_jid(prefix.split("!")[0])
        return self.nick_to_jid(prefix)

    def nick_to_jid(self,nick):
        return JID(self.room_jid.node,self.room_jid.domain,
                unicode(nick,self.encoding,"replace"))

    def get_user_presence(self,user,nick=None,actor=None,reason=None,status=None):
        if self.state and user in self.users:
            p=MucPresence(from_jid=self.nick_to_jid(user.nick),to_jid=self.session.jid)
        else:
            p=MucPresence(stanza_type="unavailable",from_jid=self.nick_to_jid(user.nick),to_jid=self.session.jid)
        if self.muc:
            if user in self.modes.get("o",[]):
                aff="admin"
                role="moderator"
            elif user in self.modes.get("v",[]):
                aff="member"
                role="participant"
            elif self.modes.get("m"):
                aff="none"
                role="visitor"
            elif user in self.users:
                aff="none"
                role="participant"
            else:
                aff="none"
                role="none"
            ui=p.make_muc_userinfo()
            if nick:
                nick=unicode(user.nick,self.encoding,"replace")
            it=MucItem(aff,role,user.jid(),nick=nick,actor=actor,reason=reason)
            ui.add_item(it)
            if status:
                ui.add_item(MucStatus(status))
        return p

    def nick_changed(self,oldnick,user):
        self.__logger.debug("Nick changed: %r -> %r" % (oldnick,user.nick))
        p_unaval=self.get_user_presence(user,nick=user.nick,status=303)
        p_unaval.set_type("unavailable")
        p_unaval.set_show(None)
        p_unaval.set_status(None)
        p_unaval.set_from(self.nick_to_jid(oldnick))
        p_aval=self.get_user_presence(user,status=303)
        self.session.component.send(p_unaval)
        self.session.component.send(p_aval)
        self.send_notice_message(u"%s is now known as %s"
                % (unicode(oldnick,self.encoding,"replace"),
                    unicode(user.nick,self.encoding,"replace")))

    def set_mode(self,mode,arg):
        if mode in self.toggle_modes:
            self.modes[mode]=1
        elif mode in self.arg_modes:
            self.modes[mode]=arg
        elif mode in self.multiarg_modes:
            if self.modes.has_key(mode):
                self.modes[mode].append(arg)
            else:
                self.modes[mode]=[arg]

    def reset_mode(self,mode,arg):
        try:
            if mode in self.toggle_modes:
                del self.modes[mode]
            elif mode in self.arg_modes:
                del self.modes[mode]
            elif mode in self.multiarg_modes:
                if self.modes.has_key(mode):
                    self.modes[mode].remove(arg)
                    if not self.modes[mode]:
                        del self.modes[mode]
        except (KeyError,ValueError):
            pass

    def irc_cmd_324(self,prefix,command,params): # RPL_CHANNELMODEIS
        for m in self.toggle_modes:
            try:
                del self.modes[m]
            except KeyError:
                pass
        self.irc_mode_changed(prefix,command,params)

    def irc_cmd_482(self,prefix,command,params): # ERR_CHANOPRIVSNEEDED
        self.irc_error_response(prefix,command,params,["TOPIC","KICK","MODE"],"forbidden")

    def irc_cmd_461(self,prefix,command,params): # ERR_NEEDMOREPARAMS
        self.irc_error_response(prefix,command,params,["TOPIC","KICK","MODE"],"bad-request")

    def irc_cmd_403(self,prefix,command,params): # ERR_NOSUCHCHANNEL
        self.irc_error_response(prefix,command,params,["KICK"],"recipient-unavailable")

    def irc_cmd_476(self,prefix,command,params): # ERR_BADCHANMASK
        self.irc_error_response(prefix,command,params,["KICK"],"bad-request")

    def irc_cmd_441(self,prefix,command,params): # ERR_USERNOTINCHANNEL
        self.irc_error_response(prefix,command,params,["KICK","MODE"],"item-not-found")

    def irc_cmd_442(self,prefix,command,params): # ERR_NOTONCHANNEL
        self.irc_error_response(prefix,command,params,["TOPIC","KICK"],"forbidden")

    def irc_cmd_472(self,prefix,command,params): # ERR_UNKNOWNMODE
        self.irc_error_response(prefix,command,params,["MODE"],"feature-not-implemented")

    def irc_cmd_477(self,prefix,command,params): # ERR_NOCHANMODES
        # this often is not an error
        pass
        #self.irc_error_response(prefix,command,params,["TOPIC","MODE"],"not-acceptable")

    def irc_error_response(self,prefix,command,params,requests,condition):
        r=self.requests.get(requests)
        if r:
            m=r.stanza.make_error_response(condition)
        else:
            m=Message(from_jid=self.room_jid.bare(),to_jid=self.session.jid,
                    stanza_type="error", error_cond=condition)
        self.session.component.send(m)

    def irc_cmd_331(self,prefix,command,params): # RPL_NOTOPIC
        m=Message(from_jid=self.room_jid.bare(),to_jid=self.session.jid, stanza_type="groupchat", subject=u"")
        self.session.component.send(m)

    def irc_cmd_332(self,prefix,command,params): # RPL_TOPIC
        topic=remove_evil_characters(params[1])
        m=Message(from_jid=self.room_jid.bare(),to_jid=self.session.jid,
                stanza_type="groupchat", subject=unicode(topic,self.encoding,"replace"))
        self.session.component.send(m)

    def irc_cmd_TOPIC(self,prefix,command,params):
        self.requests.get("TOPIC")
        topic=remove_evil_characters(params[1])
        m=Message(from_jid=self.prefix_to_jid(prefix),to_jid=self.session.jid,
                stanza_type="groupchat", subject=unicode(topic,self.encoding,"replace"))
        self.session.component.send(m)

    def irc_cmd_MODE(self,prefix,command,params):
        if len(params)<2:
            self.__logger.debug("No parameters in received MODE")
            return
        params_str=string.join(params[2:]," ").strip()
        if params_str:
            params_str=" "+params_str
        if "!" in prefix:
            nick,iuser=prefix.split("!",1)
            iuser="******" % (iuser,)
        else:
            nick,iuser=prefix,""
        self.send_notice_message(u"Mode change: [%s%s] by %s%s"
                % (unicode(params[1],self.encoding,"replace"),
                        unicode(params_str,self.encoding,"replace"),
                        unicode(nick,self.encoding,"replace"),
                        unicode(iuser,self.encoding,"replace")),
                0)
        if self.session.check_prefix(prefix) and len(params)>=3:
            r=self.requests.get("MODE",string.join(params[1:]," "))
            if r:
                reply=r.stanza.make_result_response()
                self.session.component.send(reply)
        self.irc_mode_changed(prefix,command,params)

    def irc_mode_changed(self,prefix,command,params):
        actor=self.session.get_user(prefix)
        modes=params[1]
        params=params[2:]
        pm=None
        for m in modes:
            if m in "+-":
                pm=m
                continue
            elif not pm:
                self.__logger.debug("Not '+' or '-' before '%s' in received MODE" % (m,))
                continue
            elif m in self.arg_modes or m in self.multiarg_modes:
                if not len(params):
                    self.__logger.debug("No argument for mode '%s' in received MODE" % (m,))
                    continue
                arg=params.pop(0)
            elif m in self.toggle_modes:
                arg=None
            else:
                self.__logger.debug("Unknown mode '%s' in received MODE" % (m,))
                continue
            if m in "oOv":
                arg=self.session.get_user(arg)
                if not arg:
                    continue
            if pm=="+":
                self.set_mode(m,arg)
            else:
                self.reset_mode(m,arg)
            if m in "oOv":
                self.user_mode_changed(arg,actor,m)
            elif m=="m":
                for u in self.users:
                    self.sync_user(u)

    def user_mode_changed(self,user,actor,mode):
        if actor:
            actor_jid=self.nick_to_jid(actor.nick)
        else:
            actor_jid=None
        self.__logger.debug("Mode changed: %r by %r" % (user.nick,actor_jid))
        p=self.get_user_presence(user,actor_jid)
        if actor:
            by=u" by %s" % (unicode(actor.nick,self.encoding,"replace"),)
        else:
            by=u""
        self.session.component.send(p)
        if mode=="v":
            self.send_notice_message(u"%s was granted voice%s"
                    % (unicode(user.nick,self.encoding,"replace"),by))
        elif mode=="o":
            self.send_notice_message(u"%s was granted operator status%s"
                    % (unicode(user.nick,self.encoding,"replace"),by))
        elif mode=="O":
            self.send_notice_message(u"%s was granted got owner status%s"
                    % (unicode(user.nick,self.encoding,"replace"),by))

    def irc_cmd_JOIN(self,prefix,command,params):
        nprefix=normalize(prefix)
        nnick=normalize(self.session.nick)
        if nprefix==nnick or nprefix.startswith(nnick+"!"):
            if self.state=="join":
                self.__logger.debug("Channel %r joined!" % (self.name,))
                self.session.user.sync_delay+=1
                try:
                    self.session.user.join_channel(self)
                finally:
                    self.session.user.sync_delay-=1
                self.state="joined"
                self.requests.get("JOIN")
                self.session.send("MODE %s" % (self.name,))
                self.session.send("WHO %s" % (self.name,))
        else:
            user=self.session.get_user(prefix)
            user.join_channel(self)
            self.send_notice_message(u"%s has joined"
                    % (unicode(user.nick,self.encoding,"replace"),))
            self.session.send("WHO %s" % (user.nick,))

    def irc_cmd_PART(self,prefix,command,params):
        user=self.session.get_user(prefix)
        try:
            self.users.remove(user)
        except ValueError:
            pass
        user.leave_channel(self)
        if self.session.check_prefix(prefix):
            self.session.channel_left(self)
        else:
            self.send_notice_message(u"%s has left"
                    % (unicode(user.nick,self.encoding,"replace"),))

    def irc_cmd_KICK(self,prefix,command,params):
        actor=self.session.get_user(prefix)
        user=self.session.get_user(params[1])
        try:
            self.users.remove(user)
        except ValueError:
            pass
        self.send_notice_message(u"%s was kicked by %s"
                % (unicode(user.descr(),self.encoding,"replace"),
                    unicode(actor.descr(),self.encoding,"replace")),
                0)
        user.leave_channel(self,status=307)
        if user and self.session.check_prefix(prefix):
            r=self.requests.get("KICK",user.nick)
            if r:
                iq=r.stanza.make_result_response()
                self.session.component.send(iq)
        if self.session.check_nick(params[1]):
            self.session.channel_left(self)

    def irc_cmd_PRIVMSG(self,prefix,command,params):
        self.irc_message(prefix,command,params)

    def irc_cmd_NOTICE(self,prefix,command,params):
        self.irc_message(prefix,command,params)

    def irc_message(self,prefix,command,params):
        if not self.state or len(params)<2:
            self.__logger.debug("ignoring it")
            return
        body=unicode(params[1],self.encoding,"replace")
        if body[0]=="\001" and body[-1]=="\001":
            self.CTCP(prefix,body[1:-1])
        else:
            m=Message(stanza_type="groupchat",from_jid=self.prefix_to_jid(prefix),to_jid=self.session.jid,
                    body=remove_evil_characters(strip_colors(body)))
            self.session.component.send(m)

    def CTCP(self,prefix,command):
        if " " in command:
            command,arg=command.split(" ",1)
        else:
            arg=None
        if command=="ACTION":
            m=Message(stanza_type="groupchat",from_jid=self.prefix_to_jid(prefix),to_jid=self.session.jid,
                    body="/me "+remove_evil_characters(strip_colors(arg)))
            self.session.component.send(m)
        else:
            self.__logger.debug("Unknown CTCP command: %r %r" % (command,arg))

    def change_topic(self,topic,stanza):
        topic=topic.encode(self.encoding,"replace")
        topic=topic.replace("\n"," ").replace("\r"," ")
        self.session.send("TOPIC %s :%s" % (self.name,topic))
        self.requests.add("TOPIC",stanza)

    def kick_user(self,nick,reason,stanza):
        nick=nick.encode(self.encoding,"strict")
        self.session.send("KICK %s %s :%s" % (self.name,nick,reason))
        self.requests.add("KICK",stanza,nick)

    def op_user(self,nick,stanza):
        nick=nick.encode(self.encoding,"strict")
        user=self.session.users.get(normalize(nick))
        if not user in self.users:
           r=stanza.make_error_response("item-not-found")
           self.session.component.send(r)
           return
        if user in self.modes.get("o",[]):
           r=stanza.make_result_response()
           self.session.component.send(r)
           return
        if user in self.modes.get("v",[]):
            change="-v+o %s %s" % (nick,nick)
        else:
            change="+o "+nick
        self.session.send("MODE %s %s" % (self.name,change))
        self.requests.add("MODE",stanza,change)

    def voice_user(self,nick,stanza):
        nick=nick.encode(self.encoding,"strict")
        user=self.session.users.get(normalize(nick))
        if not user in self.users:
           r=stanza.make_error_response("item-not-found")
           self.session.component.send(r)
           return
        if user in self.modes.get("v",[]):
           r=stanza.make_result_response()
           self.session.component.send(r)
           return
        if user in self.modes.get("o",[]):
            change="-o+v %s %s" % (nick,nick)
        else:
            change="+v "+nick
        self.session.send("MODE %s %s" % (self.name,change))
        self.requests.add("MODE",stanza,change)

    def devoice_user(self,nick,stanza):
        nick=nick.encode(self.encoding,"strict")
        user=self.session.users.get(normalize(nick))
        if not user in self.users:
           r=stanza.make_error_response("item-not-found")
           self.session.component.send(r)
           return
        if user in self.modes.get("v",[]) and user in self.modes.get("o",[]):
           change="-o-v %s %s" % (nick,nick)
        elif user in self.modes.get("o",[]):
            change="-o "+nick
        elif user in self.modes.get("v",[]):
            change="-v "+nick
        else:
           r=stanza.make_result_response()
           self.session.component.send(r)
           return
        self.session.send("MODE %s %s" % (self.name,change))
        self.requests.add("MODE",stanza,change)

    def __repr__(self):
        return "<IRCChannel %r>" % (self.name,)
コード例 #4
0
ファイル: channel.py プロジェクト: ivucica/jjigw
class Channel:
    toggle_modes = "aimnqpsrt"
    arg_modes = "kl"
    multiarg_modes = "OovbeI"

    def __init__(self, session, name):
        self.__logger = logging.getLogger("jjigw.Channel")
        if not channel_re.match(name):
            raise ValueError, "Bad channel name"
        self.name = name
        self.session = session
        self.state = None
        self.room_jid = None
        self.config = session.network.get_channel_config(name)
        if self.config and self.config.encoding:
            self.encoding = self.config.encoding
        else:
            self.encoding = session.default_encoding
        self.modes = {}
        self.users = [self.session.user]
        self.muc = 0
        self.requests = RequestQueue(10)

    def sync_user(self, user, status=None):
        if user.channels.has_key(normalize(self.name)):
            if user not in self.users:
                self.users.append(user)
        else:
            for m in self.multiarg_modes:
                ul = self.modes.get(m, [])
                if user in ul:
                    ul.remove(user)
            if user in self.users:
                self.users.remove(user)
                self.send_notice_message(
                    u"%s has quit" %
                    (unicode(user.nick, self.encoding, "replace"), ))
        if self.state:
            p = self.get_user_presence(user, status=status)
            self.session.component.send(p)

    def send_notice_message(self, msg, not_in_muc=1):
        if not self.state or (self.muc and not_in_muc):
            return
        m = Message(from_jid=self.room_jid.bare(),
                    to_jid=self.session.jid,
                    stanza_type="groupchat",
                    body=msg)
        self.session.component.send(m)

    def join(self, stanza):
        if self.state:
            self.__logger.debug(
                "Channel %r not in the initial state, not joining!" %
                (self.name, ))
            p = stanza.make_error_response(stanza, "bad-request")
            self.session.component.send(p)
            return
        self.room_jid = stanza.get_to()
        self.__logger.debug("Joining channel %r" % (self.name, ))
        self.session.send("JOIN %s" % (self.name, ))
        self.requests.add("JOIN", stanza)
        self.state = "join"
        if stanza.get_join_info():
            self.muc = 1

    def leave(self, stanza):
        status = stanza.get_status()
        if not self.state:
            self.__logger.debug(
                "Channel %r in the initial state - nothing to do." %
                (self.name, ))
        else:
            if not status:
                self.session.send("PART %s" % (self.name, ))
            else:
                self.session.send(
                    "PART %s :%s" %
                    (self.name, status.encode(self.encoding, "replace")))
            self.state = None
        p = MucPresence(stanza_type="unavailable",
                        from_jid=stanza.get_to(),
                        to_jid=stanza.get_from(),
                        status=status)
        self.session.component.send(p)
        for u in self.users:
            u.leave_channel(self)
        self.state = None

    def prefix_to_jid(self, prefix):
        if "!" in prefix:
            return self.nick_to_jid(prefix.split("!")[0])
        return self.nick_to_jid(prefix)

    def nick_to_jid(self, nick):
        return JID(self.room_jid.node, self.room_jid.domain,
                   unicode(nick, self.encoding, "replace"))

    def get_user_presence(self,
                          user,
                          nick=None,
                          actor=None,
                          reason=None,
                          status=None):
        if self.state and user in self.users:
            p = MucPresence(from_jid=self.nick_to_jid(user.nick),
                            to_jid=self.session.jid)
        else:
            p = MucPresence(stanza_type="unavailable",
                            from_jid=self.nick_to_jid(user.nick),
                            to_jid=self.session.jid)
        if self.muc:
            if user in self.modes.get("o", []):
                aff = "admin"
                role = "moderator"
            elif user in self.modes.get("v", []):
                aff = "member"
                role = "participant"
            elif self.modes.get("m"):
                aff = "none"
                role = "visitor"
            elif user in self.users:
                aff = "none"
                role = "participant"
            else:
                aff = "none"
                role = "none"
            ui = p.make_muc_userinfo()
            if nick:
                nick = unicode(user.nick, self.encoding, "replace")
            it = MucItem(aff,
                         role,
                         user.jid(),
                         nick=nick,
                         actor=actor,
                         reason=reason)
            ui.add_item(it)
            if status:
                ui.add_item(MucStatus(status))
        return p

    def nick_changed(self, oldnick, user):
        self.__logger.debug("Nick changed: %r -> %r" % (oldnick, user.nick))
        p_unaval = self.get_user_presence(user, nick=user.nick, status=303)
        p_unaval.set_type("unavailable")
        p_unaval.set_show(None)
        p_unaval.set_status(None)
        p_unaval.set_from(self.nick_to_jid(oldnick))
        p_aval = self.get_user_presence(user, status=303)
        self.session.component.send(p_unaval)
        self.session.component.send(p_aval)
        self.send_notice_message(
            u"%s is now known as %s" %
            (unicode(oldnick, self.encoding,
                     "replace"), unicode(user.nick, self.encoding, "replace")))

    def set_mode(self, mode, arg):
        if mode in self.toggle_modes:
            self.modes[mode] = 1
        elif mode in self.arg_modes:
            self.modes[mode] = arg
        elif mode in self.multiarg_modes:
            if self.modes.has_key(mode):
                self.modes[mode].append(arg)
            else:
                self.modes[mode] = [arg]

    def reset_mode(self, mode, arg):
        try:
            if mode in self.toggle_modes:
                del self.modes[mode]
            elif mode in self.arg_modes:
                del self.modes[mode]
            elif mode in self.multiarg_modes:
                if self.modes.has_key(mode):
                    self.modes[mode].remove(arg)
                    if not self.modes[mode]:
                        del self.modes[mode]
        except (KeyError, ValueError):
            pass

    def irc_cmd_324(self, prefix, command, params):  # RPL_CHANNELMODEIS
        for m in self.toggle_modes:
            try:
                del self.modes[m]
            except KeyError:
                pass
        self.irc_mode_changed(prefix, command, params)

    def irc_cmd_482(self, prefix, command, params):  # ERR_CHANOPRIVSNEEDED
        self.irc_error_response(prefix, command, params,
                                ["TOPIC", "KICK", "MODE"], "forbidden")

    def irc_cmd_461(self, prefix, command, params):  # ERR_NEEDMOREPARAMS
        self.irc_error_response(prefix, command, params,
                                ["TOPIC", "KICK", "MODE"], "bad-request")

    def irc_cmd_403(self, prefix, command, params):  # ERR_NOSUCHCHANNEL
        self.irc_error_response(prefix, command, params, ["KICK"],
                                "recipient-unavailable")

    def irc_cmd_476(self, prefix, command, params):  # ERR_BADCHANMASK
        self.irc_error_response(prefix, command, params, ["KICK"],
                                "bad-request")

    def irc_cmd_441(self, prefix, command, params):  # ERR_USERNOTINCHANNEL
        self.irc_error_response(prefix, command, params, ["KICK", "MODE"],
                                "item-not-found")

    def irc_cmd_442(self, prefix, command, params):  # ERR_NOTONCHANNEL
        self.irc_error_response(prefix, command, params, ["TOPIC", "KICK"],
                                "forbidden")

    def irc_cmd_472(self, prefix, command, params):  # ERR_UNKNOWNMODE
        self.irc_error_response(prefix, command, params, ["MODE"],
                                "feature-not-implemented")

    def irc_cmd_477(self, prefix, command, params):  # ERR_NOCHANMODES
        # this often is not an error
        pass
        #self.irc_error_response(prefix,command,params,["TOPIC","MODE"],"not-acceptable")

    def irc_error_response(self, prefix, command, params, requests, condition):
        r = self.requests.get(requests)
        if r:
            m = r.stanza.make_error_response(condition)
        else:
            m = Message(from_jid=self.room_jid.bare(),
                        to_jid=self.session.jid,
                        stanza_type="error",
                        error_cond=condition)
        self.session.component.send(m)

    def irc_cmd_331(self, prefix, command, params):  # RPL_NOTOPIC
        m = Message(from_jid=self.room_jid.bare(),
                    to_jid=self.session.jid,
                    stanza_type="groupchat",
                    subject=u"")
        self.session.component.send(m)

    def irc_cmd_332(self, prefix, command, params):  # RPL_TOPIC
        topic = remove_evil_characters(params[1])
        m = Message(from_jid=self.room_jid.bare(),
                    to_jid=self.session.jid,
                    stanza_type="groupchat",
                    subject=unicode(topic, self.encoding, "replace"))
        self.session.component.send(m)

    def irc_cmd_TOPIC(self, prefix, command, params):
        self.requests.get("TOPIC")
        topic = remove_evil_characters(params[1])
        m = Message(from_jid=self.prefix_to_jid(prefix),
                    to_jid=self.session.jid,
                    stanza_type="groupchat",
                    subject=unicode(topic, self.encoding, "replace"))
        self.session.component.send(m)

    def irc_cmd_MODE(self, prefix, command, params):
        if len(params) < 2:
            self.__logger.debug("No parameters in received MODE")
            return
        params_str = string.join(params[2:], " ").strip()
        if params_str:
            params_str = " " + params_str
        if "!" in prefix:
            nick, iuser = prefix.split("!", 1)
            iuser = "******" % (iuser, )
        else:
            nick, iuser = prefix, ""
        self.send_notice_message(
            u"Mode change: [%s%s] by %s%s" %
            (unicode(params[1], self.encoding,
                     "replace"), unicode(params_str, self.encoding, "replace"),
             unicode(nick, self.encoding,
                     "replace"), unicode(iuser, self.encoding, "replace")), 0)
        if self.session.check_prefix(prefix) and len(params) >= 3:
            r = self.requests.get("MODE", string.join(params[1:], " "))
            if r:
                reply = r.stanza.make_result_response()
                self.session.component.send(reply)
        self.irc_mode_changed(prefix, command, params)

    def irc_mode_changed(self, prefix, command, params):
        actor = self.session.get_user(prefix)
        modes = params[1]
        params = params[2:]
        pm = None
        for m in modes:
            if m in "+-":
                pm = m
                continue
            elif not pm:
                self.__logger.debug(
                    "Not '+' or '-' before '%s' in received MODE" % (m, ))
                continue
            elif m in self.arg_modes or m in self.multiarg_modes:
                if not len(params):
                    self.__logger.debug(
                        "No argument for mode '%s' in received MODE" % (m, ))
                    continue
                arg = params.pop(0)
            elif m in self.toggle_modes:
                arg = None
            else:
                self.__logger.debug("Unknown mode '%s' in received MODE" %
                                    (m, ))
                continue
            if m in "oOv":
                arg = self.session.get_user(arg)
                if not arg:
                    continue
            if pm == "+":
                self.set_mode(m, arg)
            else:
                self.reset_mode(m, arg)
            if m in "oOv":
                self.user_mode_changed(arg, actor, m)
            elif m == "m":
                for u in self.users:
                    self.sync_user(u)

    def user_mode_changed(self, user, actor, mode):
        if actor:
            actor_jid = self.nick_to_jid(actor.nick)
        else:
            actor_jid = None
        self.__logger.debug("Mode changed: %r by %r" % (user.nick, actor_jid))
        p = self.get_user_presence(user, actor_jid)
        if actor:
            by = u" by %s" % (unicode(actor.nick, self.encoding, "replace"), )
        else:
            by = u""
        self.session.component.send(p)
        if mode == "v":
            self.send_notice_message(
                u"%s was granted voice%s" %
                (unicode(user.nick, self.encoding, "replace"), by))
        elif mode == "o":
            self.send_notice_message(
                u"%s was granted operator status%s" %
                (unicode(user.nick, self.encoding, "replace"), by))
        elif mode == "O":
            self.send_notice_message(
                u"%s was granted got owner status%s" %
                (unicode(user.nick, self.encoding, "replace"), by))

    def irc_cmd_JOIN(self, prefix, command, params):
        nprefix = normalize(prefix)
        nnick = normalize(self.session.nick)
        if nprefix == nnick or nprefix.startswith(nnick + "!"):
            if self.state == "join":
                self.__logger.debug("Channel %r joined!" % (self.name, ))
                self.session.user.sync_delay += 1
                try:
                    self.session.user.join_channel(self)
                finally:
                    self.session.user.sync_delay -= 1
                self.state = "joined"
                self.requests.get("JOIN")
                self.session.send("MODE %s" % (self.name, ))
                self.session.send("WHO %s" % (self.name, ))
        else:
            user = self.session.get_user(prefix)
            user.join_channel(self)
            self.send_notice_message(
                u"%s has joined" %
                (unicode(user.nick, self.encoding, "replace"), ))
            self.session.send("WHO %s" % (user.nick, ))

    def irc_cmd_PART(self, prefix, command, params):
        user = self.session.get_user(prefix)
        try:
            self.users.remove(user)
        except ValueError:
            pass
        user.leave_channel(self)
        if self.session.check_prefix(prefix):
            self.session.channel_left(self)
        else:
            self.send_notice_message(
                u"%s has left" %
                (unicode(user.nick, self.encoding, "replace"), ))

    def irc_cmd_KICK(self, prefix, command, params):
        actor = self.session.get_user(prefix)
        user = self.session.get_user(params[1])
        try:
            self.users.remove(user)
        except ValueError:
            pass
        self.send_notice_message(
            u"%s was kicked by %s" %
            (unicode(user.descr(), self.encoding, "replace"),
             unicode(actor.descr(), self.encoding, "replace")), 0)
        user.leave_channel(self, status=307)
        if user and self.session.check_prefix(prefix):
            r = self.requests.get("KICK", user.nick)
            if r:
                iq = r.stanza.make_result_response()
                self.session.component.send(iq)
        if self.session.check_nick(params[1]):
            self.session.channel_left(self)

    def irc_cmd_PRIVMSG(self, prefix, command, params):
        self.irc_message(prefix, command, params)

    def irc_cmd_NOTICE(self, prefix, command, params):
        self.irc_message(prefix, command, params)

    def irc_message(self, prefix, command, params):
        if not self.state or len(params) < 2:
            self.__logger.debug("ignoring it")
            return
        body = unicode(params[1], self.encoding, "replace")
        if body[0] == "\001" and body[-1] == "\001":
            self.CTCP(prefix, body[1:-1])
        else:
            m = Message(stanza_type="groupchat",
                        from_jid=self.prefix_to_jid(prefix),
                        to_jid=self.session.jid,
                        body=remove_evil_characters(strip_colors(body)))
            self.session.component.send(m)

    def CTCP(self, prefix, command):
        if " " in command:
            command, arg = command.split(" ", 1)
        else:
            arg = None
        if command == "ACTION":
            m = Message(stanza_type="groupchat",
                        from_jid=self.prefix_to_jid(prefix),
                        to_jid=self.session.jid,
                        body="/me " +
                        remove_evil_characters(strip_colors(arg)))
            self.session.component.send(m)
        else:
            self.__logger.debug("Unknown CTCP command: %r %r" % (command, arg))

    def change_topic(self, topic, stanza):
        topic = topic.encode(self.encoding, "replace")
        topic = topic.replace("\n", " ").replace("\r", " ")
        self.session.send("TOPIC %s :%s" % (self.name, topic))
        self.requests.add("TOPIC", stanza)

    def kick_user(self, nick, reason, stanza):
        nick = nick.encode(self.encoding, "strict")
        self.session.send("KICK %s %s :%s" % (self.name, nick, reason))
        self.requests.add("KICK", stanza, nick)

    def op_user(self, nick, stanza):
        nick = nick.encode(self.encoding, "strict")
        user = self.session.users.get(normalize(nick))
        if not user in self.users:
            r = stanza.make_error_response("item-not-found")
            self.session.component.send(r)
            return
        if user in self.modes.get("o", []):
            r = stanza.make_result_response()
            self.session.component.send(r)
            return
        if user in self.modes.get("v", []):
            change = "-v+o %s %s" % (nick, nick)
        else:
            change = "+o " + nick
        self.session.send("MODE %s %s" % (self.name, change))
        self.requests.add("MODE", stanza, change)

    def voice_user(self, nick, stanza):
        nick = nick.encode(self.encoding, "strict")
        user = self.session.users.get(normalize(nick))
        if not user in self.users:
            r = stanza.make_error_response("item-not-found")
            self.session.component.send(r)
            return
        if user in self.modes.get("v", []):
            r = stanza.make_result_response()
            self.session.component.send(r)
            return
        if user in self.modes.get("o", []):
            change = "-o+v %s %s" % (nick, nick)
        else:
            change = "+v " + nick
        self.session.send("MODE %s %s" % (self.name, change))
        self.requests.add("MODE", stanza, change)

    def devoice_user(self, nick, stanza):
        nick = nick.encode(self.encoding, "strict")
        user = self.session.users.get(normalize(nick))
        if not user in self.users:
            r = stanza.make_error_response("item-not-found")
            self.session.component.send(r)
            return
        if user in self.modes.get("v", []) and user in self.modes.get("o", []):
            change = "-o-v %s %s" % (nick, nick)
        elif user in self.modes.get("o", []):
            change = "-o " + nick
        elif user in self.modes.get("v", []):
            change = "-v " + nick
        else:
            r = stanza.make_result_response()
            self.session.component.send(r)
            return
        self.session.send("MODE %s %s" % (self.name, change))
        self.requests.add("MODE", stanza, change)

    def __repr__(self):
        return "<IRCChannel %r>" % (self.name, )