]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/channels.cpp
Change the syntax of FOREACH macros to be less dumb.
[user/henk/code/inspircd.git] / src / channels.cpp
index 7f2cefd2bb8059d4fb505f2ebc6e15bfb4d35674..d82ad6c233b4345d838d61b41113df96c72c503d 100644 (file)
@@ -1,49 +1,67 @@
-/*       +------------------------------------+
- *       | Inspire Internet Relay Chat Daemon |
- *       +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2006-2008 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2006, 2008 Oliver Lupton <oliverlupton@gmail.com>
+ *   Copyright (C) 2008 Pippijn van Steenhoven <pip88nl@gmail.com>
+ *   Copyright (C) 2003-2008 Craig Edwards <craigedwards@brainbox.cc>
+ *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
  *
- *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
- * See: http://wiki.inspircd.org/Credits
+ * This file is part of InspIRCd.  InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
  *
- * This program is free but copyrighted software; see
- *            the file COPYING for details.
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
  *
- * ---------------------------------------------------
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/* $Core */
 
 #include "inspircd.h"
+#include "listmode.h"
 #include <cstdarg>
 #include "mode.h"
 
-Channel::Channel(InspIRCd* Instance, const std::string &cname, time_t ts)
+namespace
+{
+       ChanModeReference ban(NULL, "ban");
+       ChanModeReference inviteonlymode(NULL, "inviteonly");
+       ChanModeReference keymode(NULL, "key");
+       ChanModeReference limitmode(NULL, "limit");
+       ChanModeReference secretmode(NULL, "secret");
+       ChanModeReference privatemode(NULL, "private");
+       UserModeReference invisiblemode(NULL, "invisible");
+}
+
+Channel::Channel(const std::string &cname, time_t ts)
 {
-       chan_hash::iterator findchan = ServerInstance->chanlist->find(cname);
-       if (findchan != Instance->chanlist->end())
+       if (!ServerInstance->chanlist->insert(std::make_pair(cname, this)).second)
                throw CoreException("Cannot create duplicate channel " + cname);
 
-       (*(ServerInstance->chanlist))[cname.c_str()] = this;
-       this->name.assign(cname, 0, ServerInstance->Config->Limits.ChanMax);
+       this->name = cname;
        this->age = ts ? ts : ServerInstance->Time();
 
-       maxbans = topicset = 0;
+       topicset = 0;
        modes.reset();
 }
 
-void Channel::SetMode(char mode,bool mode_on)
+void Channel::SetMode(ModeHandler* mh, bool on)
 {
-       modes[mode-65] = mode_on;
+       modes[mh->GetModeChar() - 65] = on;
 }
 
-void Channel::SetModeParam(char mode, std::string parameter)
+void Channel::SetModeParam(ModeHandler* mh, const std::string& parameter)
 {
-       CustomModeList::iterator n = custom_mode_params.find(mode);
-       // always erase, even if changing, so that the map gets the new value
-       if (n != custom_mode_params.end())
-               custom_mode_params.erase(n);
+       char mode = mh->GetModeChar();
        if (parameter.empty())
        {
+               custom_mode_params.erase(mode);
                modes[mode-65] = false;
        }
        else
@@ -53,94 +71,72 @@ void Channel::SetModeParam(char mode, std::string parameter)
        }
 }
 
-std::string Channel::GetModeParameter(char mode)
+std::string Channel::GetModeParameter(ModeHandler* mode)
 {
-       CustomModeList::iterator n = custom_mode_params.find(mode);
+       CustomModeList::iterator n = custom_mode_params.find(mode->GetModeChar());
        if (n != custom_mode_params.end())
                return n->second;
        return "";
 }
 
-int Channel::SetTopic(User *u, std::string &ntopic, bool forceset)
+void Channel::SetTopic(User* u, const std::string& ntopic)
 {
-       if (u)
-       {
-               if(!forceset)
-               {
-                       ModResult res;
-                       /* 0: check status, 1: don't, -1: disallow change silently */
-
-                       FIRST_MOD_RESULT(ServerInstance, OnPreTopicChange, res, (u,this,ntopic));
-
-                       if (res == MOD_RES_DENY)
-                               return CMD_FAILURE;
-                       if (res != MOD_RES_ALLOW)
-                       {
-                               if (!this->HasUser(u))
-                               {
-                                       u->WriteNumeric(442, "%s %s :You're not on that channel!",u->nick.c_str(), this->name.c_str());
-                                       return CMD_FAILURE;
-                               }
-                               if ((this->IsModeSet('t')) && (this->GetPrefixValue(u) < HALFOP_VALUE))
-                               {
-                                       u->WriteNumeric(482, "%s %s :You must be at least a half-operator to change the topic on this channel", u->nick.c_str(), this->name.c_str());
-                                       return CMD_FAILURE;
-                               }
-                       }
-               }
-       }
-
        this->topic.assign(ntopic, 0, ServerInstance->Config->Limits.MaxTopic);
-       if (u)
-       {
-               this->setby.assign(ServerInstance->Config->FullHostInTopic ? u->GetFullHost() : u->nick, 0, 128);
-               this->WriteChannel(u, "TOPIC %s :%s", this->name.c_str(), this->topic.c_str());
-       }
-       else
-       {
-               this->setby.assign(ServerInstance->Config->ServerName);
-               this->WriteChannelWithServ(ServerInstance->Config->ServerName, "TOPIC %s :%s", this->name.c_str(), this->topic.c_str());
-       }
-
+       this->setby.assign(ServerInstance->Config->FullHostInTopic ? u->GetFullHost() : u->nick, 0, 128);
+       this->WriteChannel(u, "TOPIC %s :%s", this->name.c_str(), this->topic.c_str());
        this->topicset = ServerInstance->Time();
 
-       // XXX: this check for 'u' is probably pre-fake-user, and it fucking sucks anyway. we need to change this.
-       if (u)
-       {
-               FOREACH_MOD(I_OnPostTopicChange,OnPostTopicChange(u, this, this->topic));
-       }
-
-       return CMD_SUCCESS;
+       FOREACH_MOD(OnPostTopicChange, (u, this, this->topic));
 }
 
-long Channel::GetUserCounter()
+Membership* Channel::AddUser(User* user)
 {
-       return userlist.size();
+       Membership*& memb = userlist[user];
+       if (memb)
+               return NULL;
+
+       memb = new Membership(user, this);
+       return memb;
 }
 
-Membership* Channel::AddUser(User* user)
+void Channel::DelUser(User* user)
 {
-       Membership* memb = new Membership(user, this);
-       userlist[user] = memb;
-       return memb;
+       UserMembIter it = userlist.find(user);
+       if (it != userlist.end())
+               DelUser(it);
 }
 
-unsigned long Channel::DelUser(User* user)
+void Channel::CheckDestroy()
 {
-       UserMembIter a = userlist.find(user);
+       if (!userlist.empty())
+               return;
 
-       if (a != userlist.end())
+       ModResult res;
+       FIRST_MOD_RESULT(OnChannelPreDelete, res, (this));
+       if (res == MOD_RES_DENY)
+               return;
+
+       chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
+       /* kill the record */
+       if (iter != ServerInstance->chanlist->end())
        {
-               delete a->second;
-               userlist.erase(a);
+               FOREACH_MOD(OnChannelDelete, (this));
+               ServerInstance->chanlist->erase(iter);
        }
 
-       return userlist.size();
+       ClearInvites();
+       ServerInstance->GlobalCulls.AddItem(this);
 }
 
-bool Channel::HasUser(User* user)
+void Channel::DelUser(const UserMembIter& membiter)
 {
-       return (userlist.find(user) != userlist.end());
+       Membership* memb = membiter->second;
+       memb->cull();
+       delete memb;
+       userlist.erase(membiter);
+
+       // If this channel became empty then it should be removed
+       CheckDestroy();
 }
 
 Membership* Channel::GetUser(User* user)
@@ -151,14 +147,10 @@ Membership* Channel::GetUser(User* user)
        return i->second;
 }
 
-const UserMembList* Channel::GetUsers()
-{
-       return &userlist;
-}
-
 void Channel::SetDefaultModes()
 {
-       ServerInstance->Logs->Log("CHANNELS", DEBUG, "SetDefaultModes %s", ServerInstance->Config->DefaultModes);
+       ServerInstance->Logs->Log("CHANNELS", LOG_DEBUG, "SetDefaultModes %s",
+               ServerInstance->Config->DefaultModes.c_str());
        irc::spacesepstream list(ServerInstance->Config->DefaultModes);
        std::string modeseq;
        std::string parameter;
@@ -184,15 +176,13 @@ void Channel::SetDefaultModes()
  * add a channel to a user, creating the record for it if needed and linking
  * it to the user record
  */
-Channel* Channel::JoinUser(InspIRCd* Instance, User *user, const char* cn, bool override, const char* key, bool bursting, time_t TS)
+Channel* Channel::JoinUser(LocalUser* user, std::string cname, bool override, const std::string& key)
 {
-       // Fix: unregistered users could be joined using /SAJOIN
-       if (!user || !cn || user->registered != REG_ALL)
+       if (user->registered != REG_ALL)
+       {
+               ServerInstance->Logs->Log("CHANNELS", LOG_DEBUG, "Attempted to join unregistered user " + user->uuid + " to channel " + cname);
                return NULL;
-
-       char cname[MAXBUF];
-       std::string privs;
-       Channel *Ptr;
+       }
 
        /*
         * We don't restrict the number of channels that remote users or users that are override-joining may be in.
@@ -200,119 +190,116 @@ Channel* Channel::JoinUser(InspIRCd* Instance, User *user, const char* cn, bool
         * We restrict local operators to OperMaxChans channels.
         * This is a lot more logical than how it was formerly. -- w00t
         */
-       if (IS_LOCAL(user) && !override)
+       if (!override)
        {
-               // Checking MyClass exists because we *may* get here with NULL, not 100% sure.
-               if (user->MyClass && user->MyClass->maxchans)
+               if (user->HasPrivPermission("channels/high-join-limit"))
                {
-                       if (user->HasPrivPermission("channels/high-join-limit"))
+                       if (user->chans.size() >= ServerInstance->Config->OperMaxChans)
                        {
-                               if (user->chans.size() >= Instance->Config->OperMaxChans)
-                               {
-                                       user->WriteNumeric(ERR_TOOMANYCHANNELS, "%s %s :You are on too many channels",user->nick.c_str(), cn);
-                                       return NULL;
-                               }
+                               user->WriteNumeric(ERR_TOOMANYCHANNELS, "%s %s :You are on too many channels",user->nick.c_str(), cname.c_str());
+                               return NULL;
                        }
-                       else
+               }
+               else
+               {
+                       unsigned int maxchans = user->GetClass()->maxchans;
+                       if (!maxchans)
+                               maxchans = ServerInstance->Config->MaxChans;
+                       if (user->chans.size() >= maxchans)
                        {
-                               if (user->chans.size() >= user->MyClass->maxchans)
-                               {
-                                       user->WriteNumeric(ERR_TOOMANYCHANNELS, "%s %s :You are on too many channels",user->nick.c_str(), cn);
-                                       return NULL;
-                               }
+                               user->WriteNumeric(ERR_TOOMANYCHANNELS, "%s %s :You are on too many channels",user->nick.c_str(), cname.c_str());
+                               return NULL;
                        }
                }
        }
 
-       strlcpy(cname, cn, Instance->Config->Limits.ChanMax);
-       Ptr = Instance->FindChan(cname);
-       bool created_by_local = false;
+       // Crop channel name if it's too long
+       if (cname.length() > ServerInstance->Config->Limits.ChanMax)
+               cname.resize(ServerInstance->Config->Limits.ChanMax);
+
+       Channel* chan = ServerInstance->FindChan(cname);
+       bool created_by_local = (chan == NULL); // Flag that will be passed to modules in the OnUserJoin() hook later
+       std::string privs; // Prefix mode(letter)s to give to the joining user
 
-       if (!Ptr)
+       if (!chan)
        {
-               /*
-                * Fix: desync bug was here, don't set @ on remote users - spanningtree handles their permissions. bug #358. -- w00t
-                */
-               if (!IS_LOCAL(user))
-               {
-                       if (!TS)
-                               Instance->Logs->Log("CHANNEL",DEBUG,"*** BUG *** Channel::JoinUser called for REMOTE user '%s' on channel '%s' but no TS given!", user->nick.c_str(), cn);
-               }
-               else
-               {
-                       privs = "o";
-                       created_by_local = true;
-               }
+               privs = "o";
 
-               if (IS_LOCAL(user) && override == false)
+               if (override == false)
                {
+                       // Ask the modules whether they're ok with the join, pass NULL as Channel* as the channel is yet to be created
                        ModResult MOD_RESULT;
-                       FIRST_MOD_RESULT(Instance, OnUserPreJoin, MOD_RESULT, (user, NULL, cname, privs, key ? key : ""));
+                       FIRST_MOD_RESULT(OnUserPreJoin, MOD_RESULT, (user, NULL, cname, privs, key));
                        if (MOD_RESULT == MOD_RES_DENY)
-                               return NULL;
+                               return NULL; // A module wasn't happy with the join, abort
                }
 
-               Ptr = new Channel(Instance, cname, TS);
+               chan = new Channel(cname, ServerInstance->Time());
+               // Set the default modes on the channel (<options:defaultmodes>)
+               chan->SetDefaultModes();
        }
        else
        {
                /* Already on the channel */
-               if (Ptr->HasUser(user))
+               if (chan->HasUser(user))
                        return NULL;
 
-               /*
-                * remote users are allowed us to bypass channel modes
-                * and bans (used by servers)
-                */
-               if (IS_LOCAL(user) && override == false)
+               if (override == false)
                {
                        ModResult MOD_RESULT;
-                       FIRST_MOD_RESULT(Instance, OnUserPreJoin, MOD_RESULT, (user, Ptr, cname, privs, key ? key : ""));
+                       FIRST_MOD_RESULT(OnUserPreJoin, MOD_RESULT, (user, chan, cname, privs, key));
+
+                       // A module explicitly denied the join and (hopefully) generated a message
+                       // describing the situation, so we may stop here without sending anything
                        if (MOD_RESULT == MOD_RES_DENY)
-                       {
                                return NULL;
-                       }
-                       else if (MOD_RESULT == MOD_RES_PASSTHRU)
+
+                       // If no module returned MOD_RES_DENY or MOD_RES_ALLOW (which is the case
+                       // most of the time) then proceed to check channel modes +k, +i, +l and bans,
+                       // in this order.
+                       // If a module explicitly allowed the join (by returning MOD_RES_ALLOW),
+                       // then this entire section is skipped
+                       if (MOD_RESULT == MOD_RES_PASSTHRU)
                        {
-                               std::string ckey = Ptr->GetModeParameter('k');
-                               bool invited = user->IsInvited(Ptr->name.c_str());
-                               bool can_bypass = Instance->Config->InvBypassModes && invited;
+                               std::string ckey = chan->GetModeParameter(keymode);
+                               bool invited = user->IsInvited(chan);
+                               bool can_bypass = ServerInstance->Config->InvBypassModes && invited;
 
                                if (!ckey.empty())
                                {
-                                       FIRST_MOD_RESULT(Instance, OnCheckKey, MOD_RESULT, (user, Ptr, key ? key : ""));
-                                       if (!MOD_RESULT.check((key && ckey == key) || can_bypass))
+                                       FIRST_MOD_RESULT(OnCheckKey, MOD_RESULT, (user, chan, key));
+                                       if (!MOD_RESULT.check((ckey == key) || can_bypass))
                                        {
                                                // If no key provided, or key is not the right one, and can't bypass +k (not invited or option not enabled)
-                                               user->WriteNumeric(ERR_BADCHANNELKEY, "%s %s :Cannot join channel (Incorrect channel key)",user->nick.c_str(), Ptr->name.c_str());
+                                               user->WriteNumeric(ERR_BADCHANNELKEY, "%s %s :Cannot join channel (Incorrect channel key)",user->nick.c_str(), chan->name.c_str());
                                                return NULL;
                                        }
                                }
 
-                               if (Ptr->IsModeSet('i'))
+                               if (chan->IsModeSet(inviteonlymode))
                                {
-                                       FIRST_MOD_RESULT(Instance, OnCheckInvite, MOD_RESULT, (user, Ptr));
+                                       FIRST_MOD_RESULT(OnCheckInvite, MOD_RESULT, (user, chan));
                                        if (!MOD_RESULT.check(invited))
                                        {
-                                               user->WriteNumeric(ERR_INVITEONLYCHAN, "%s %s :Cannot join channel (Invite only)",user->nick.c_str(), Ptr->name.c_str());
+                                               user->WriteNumeric(ERR_INVITEONLYCHAN, "%s %s :Cannot join channel (Invite only)",user->nick.c_str(), chan->name.c_str());
                                                return NULL;
                                        }
                                }
 
-                               std::string limit = Ptr->GetModeParameter('l');
+                               std::string limit = chan->GetModeParameter(limitmode);
                                if (!limit.empty())
                                {
-                                       FIRST_MOD_RESULT(Instance, OnCheckLimit, MOD_RESULT, (user, Ptr));
-                                       if (!MOD_RESULT.check((Ptr->GetUserCounter() < atol(limit.c_str()) || can_bypass)))
+                                       FIRST_MOD_RESULT(OnCheckLimit, MOD_RESULT, (user, chan));
+                                       if (!MOD_RESULT.check((chan->GetUserCounter() < atol(limit.c_str()) || can_bypass)))
                                        {
-                                               user->WriteNumeric(ERR_CHANNELISFULL, "%s %s :Cannot join channel (Channel is full)",user->nick.c_str(), Ptr->name.c_str());
+                                               user->WriteNumeric(ERR_CHANNELISFULL, "%s %s :Cannot join channel (Channel is full)",user->nick.c_str(), chan->name.c_str());
                                                return NULL;
                                        }
                                }
 
-                               if (Ptr->IsBanned(user) && !can_bypass)
+                               if (chan->IsBanned(user) && !can_bypass)
                                {
-                                       user->WriteNumeric(ERR_BANNEDFROMCHAN, "%s %s :Cannot join channel (You're banned)",user->nick.c_str(), Ptr->name.c_str());
+                                       user->WriteNumeric(ERR_BANNEDFROMCHAN, "%s %s :Cannot join channel (You're banned)",user->nick.c_str(), chan->name.c_str());
                                        return NULL;
                                }
 
@@ -322,319 +309,258 @@ Channel* Channel::JoinUser(InspIRCd* Instance, User *user, const char* cn, bool
                                 */
                                if (invited)
                                {
-                                       user->RemoveInvite(Ptr->name.c_str());
+                                       user->RemoveInvite(chan);
                                }
                        }
                }
        }
 
-       if (created_by_local)
-       {
-               /* As spotted by jilles, dont bother to set this on remote users */
-               Ptr->SetDefaultModes();
-       }
-
-       return Channel::ForceChan(Instance, Ptr, user, privs, bursting, created_by_local);
+       // We figured that this join is allowed and also created the
+       // channel if it didn't exist before, now do the actual join
+       chan->ForceJoin(user, &privs, false, created_by_local);
+       return chan;
 }
 
-Channel* Channel::ForceChan(InspIRCd* Instance, Channel* Ptr, User* user, const std::string &privs, bool bursting, bool created)
+void Channel::ForceJoin(User* user, const std::string* privs, bool bursting, bool created_by_local)
 {
-       std::string nick = user->nick;
+       if (IS_SERVER(user))
+       {
+               ServerInstance->Logs->Log("CHANNELS", LOG_DEBUG, "Attempted to join server user " + user->uuid + " to channel " + this->name);
+               return;
+       }
+
+       Membership* memb = this->AddUser(user);
+       if (!memb)
+               return; // Already on the channel
 
-       Membership* memb = Ptr->AddUser(user);
-       user->chans.insert(Ptr);
+       user->chans.insert(this);
 
-       for (std::string::const_iterator x = privs.begin(); x != privs.end(); x++)
+       if (privs)
        {
-               const char status = *x;
-               ModeHandler* mh = Instance->Modes->FindMode(status, MODETYPE_CHANNEL);
-               if (mh)
+               // If the user was granted prefix modes (in the OnUserPreJoin hook, or he's a
+               // remote user and his own server set the modes), then set them internally now
+               memb->modes = *privs;
+               for (std::string::const_iterator i = privs->begin(); i != privs->end(); ++i)
                {
-                       /* Set, and make sure that the mode handler knows this mode was now set */
-                       Ptr->SetPrefix(user, mh->GetModeChar(), true);
-                       mh->OnModeChange(Instance->FakeClient, Instance->FakeClient, Ptr, nick, true);
+                       ModeHandler* mh = ServerInstance->Modes->FindMode(*i, MODETYPE_CHANNEL);
+                       if (mh)
+                       {
+                               std::string nick = user->nick;
+                               /* Set, and make sure that the mode handler knows this mode was now set */
+                               this->SetPrefix(user, mh->GetModeChar(), true);
+                               mh->OnModeChange(ServerInstance->FakeClient, ServerInstance->FakeClient, this, nick, true);
+                       }
                }
        }
 
+       // Tell modules about this join, they have the chance now to populate except_list with users we won't send the JOIN (and possibly MODE) to
        CUList except_list;
-       FOREACH_MOD_I(Instance,I_OnUserJoin,OnUserJoin(memb, bursting, created, except_list));
+       FOREACH_MOD(OnUserJoin, (memb, bursting, created_by_local, except_list));
 
-       Ptr->WriteAllExcept(user, false, 0, except_list, "JOIN :%s", Ptr->name.c_str());
+       this->WriteAllExcept(user, false, 0, except_list, "JOIN :%s", this->name.c_str());
 
        /* Theyre not the first ones in here, make sure everyone else sees the modes we gave the user */
-       std::string ms = Instance->Modes->ModeString(user, Ptr);
-       if ((Ptr->GetUserCounter() > 1) && (ms.length()))
-               Ptr->WriteAllExceptSender(user, true, 0, "MODE %s +%s", Ptr->name.c_str(), ms.c_str());
+       if ((GetUserCounter() > 1) && (!memb->modes.empty()))
+       {
+               std::string ms = memb->modes;
+               for(unsigned int i=0; i < memb->modes.length(); i++)
+                       ms.append(" ").append(user->nick);
+
+               except_list.insert(user);
+               this->WriteAllExcept(user, !ServerInstance->Config->CycleHostsFromUser, 0, except_list, "MODE %s +%s", this->name.c_str(), ms.c_str());
+       }
 
-       /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
        if (IS_LOCAL(user))
        {
-               if (Ptr->topicset)
+               if (this->topicset)
                {
-                       user->WriteNumeric(RPL_TOPIC, "%s %s :%s", user->nick.c_str(), Ptr->name.c_str(), Ptr->topic.c_str());
-                       user->WriteNumeric(RPL_TOPICTIME, "%s %s %s %lu", user->nick.c_str(), Ptr->name.c_str(), Ptr->setby.c_str(), (unsigned long)Ptr->topicset);
+                       user->WriteNumeric(RPL_TOPIC, "%s %s :%s", user->nick.c_str(), this->name.c_str(), this->topic.c_str());
+                       user->WriteNumeric(RPL_TOPICTIME, "%s %s %s %lu", user->nick.c_str(), this->name.c_str(), this->setby.c_str(), (unsigned long)this->topicset);
                }
-               Ptr->UserList(user);
+               this->UserList(user);
        }
-       FOREACH_MOD_I(Instance,I_OnPostJoin,OnPostJoin(memb));
-       return Ptr;
+
+       FOREACH_MOD(OnPostJoin, (memb));
 }
 
 bool Channel::IsBanned(User* user)
 {
        ModResult result;
-       DO_EACH_HOOK(ServerInstance, OnCheckBan, ModResult modresult, (user, this))
-       {
-               result = result + modresult;
-       }
-       WHILE_EACH_HOOK(ServerInstance, OnCheckBan);
+       FIRST_MOD_RESULT(OnCheckChannelBan, result, (user, this));
 
        if (result != MOD_RES_PASSTHRU)
                return (result == MOD_RES_DENY);
 
-       char mask[MAXBUF];
-       snprintf(mask, MAXBUF, "%s!%s@%s", user->nick.c_str(), user->ident.c_str(), user->GetIPString());
-       for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
+       ListModeBase* banlm = static_cast<ListModeBase*>(*ban);
+       const ListModeBase::ModeList* bans = banlm->GetList(this);
+       if (bans)
        {
-               if ((InspIRCd::Match(user->GetFullHost(),i->data, NULL)) || // host
-                       (InspIRCd::Match(user->GetFullRealHost(),i->data, NULL)) || // uncloaked host
-                       (InspIRCd::MatchCIDR(mask, i->data, NULL))) // ip
+               for (ListModeBase::ModeList::const_iterator it = bans->begin(); it != bans->end(); it++)
                {
-                       return true;
+                       if (CheckBan(user, it->mask))
+                               return true;
                }
        }
        return false;
 }
 
-ModResult Channel::GetExtBanStatus(const std::string &str, char type)
+bool Channel::CheckBan(User* user, const std::string& mask)
 {
        ModResult result;
-       DO_EACH_HOOK(ServerInstance, OnCheckStringExtBan, ModResult modresult, (str, this, type))
-       {
-               result = result + modresult;
-       }
-       WHILE_EACH_HOOK(ServerInstance, OnCheckStringExtBan);
-
+       FIRST_MOD_RESULT(OnCheckBan, result, (user, this, mask));
        if (result != MOD_RES_PASSTHRU)
-               return result;
+               return (result == MOD_RES_DENY);
 
-       // nobody decided for us, check the ban list
-       for (BanList::iterator i = this->bans.begin(); i != this->bans.end(); i++)
-       {
-               if (i->data[0] != type || i->data[1] != ':')
-                       continue;
+       // extbans were handled above, if this is one it obviously didn't match
+       if ((mask.length() <= 2) || (mask[1] == ':'))
+               return false;
 
-               std::string maskptr = i->data.substr(2);
-               ServerInstance->Logs->Log("EXTBANS", DEBUG, "Checking %s against %s, type is %c", str.c_str(), maskptr.c_str(), type);
+       std::string::size_type at = mask.find('@');
+       if (at == std::string::npos)
+               return false;
 
-               if (InspIRCd::Match(str, maskptr, NULL))
-                       return MOD_RES_DENY;
+       const std::string nickIdent = user->nick + "!" + user->ident;
+       std::string prefix = mask.substr(0, at);
+       if (InspIRCd::Match(nickIdent, prefix, NULL))
+       {
+               std::string suffix = mask.substr(at + 1);
+               if (InspIRCd::Match(user->host, suffix, NULL) ||
+                       InspIRCd::Match(user->dhost, suffix, NULL) ||
+                       InspIRCd::MatchCIDR(user->GetIPString(), suffix, NULL))
+                       return true;
        }
-
-       return MOD_RES_PASSTHRU;
+       return false;
 }
 
 ModResult Channel::GetExtBanStatus(User *user, char type)
 {
        ModResult rv;
-       DO_EACH_HOOK(ServerInstance, OnCheckExtBan, ModResult modresult, (user, this, type))
-       {
-               rv = rv + modresult;
-       }
-       WHILE_EACH_HOOK(ServerInstance, OnCheckExtBan);
-
+       FIRST_MOD_RESULT(OnExtBanCheck, rv, (user, this, type));
        if (rv != MOD_RES_PASSTHRU)
                return rv;
 
-       char mask[MAXBUF];
-       snprintf(mask, MAXBUF, "%s!%s@%s", user->nick.c_str(), user->ident.c_str(), user->GetIPString());
+       ListModeBase* banlm = static_cast<ListModeBase*>(*ban);
+       const ListModeBase::ModeList* bans = banlm->GetList(this);
+       if (bans)
 
-       rv = rv + this->GetExtBanStatus(mask, type);
-       rv = rv + this->GetExtBanStatus(user->GetFullHost(), type);
-       rv = rv + this->GetExtBanStatus(user->GetFullRealHost(), type);
-       return rv;
+       {
+               for (ListModeBase::ModeList::const_iterator it = bans->begin(); it != bans->end(); ++it)
+               {
+                       if (CheckBan(user, it->mask))
+                               return MOD_RES_DENY;
+               }
+       }
+       return MOD_RES_PASSTHRU;
 }
 
 /* Channel::PartUser
- * remove a channel from a users record, and return the number of users left.
- * Therefore, if this function returns 0 the caller should delete the Channel.
+ * Remove a channel from a users record, remove the reference to the Membership object
+ * from the channel and destroy it.
  */
-long Channel::PartUser(User *user, std::string &reason)
+void Channel::PartUser(User *user, std::string &reason)
 {
-       if (!user)
-               return this->GetUserCounter();
+       UserMembIter membiter = userlist.find(user);
 
-       Membership* memb = GetUser(user);
-
-       if (memb)
+       if (membiter != userlist.end())
        {
+               Membership* memb = membiter->second;
                CUList except_list;
-               FOREACH_MOD(I_OnUserPart,OnUserPart(memb, reason, except_list));
+               FOREACH_MOD(OnUserPart, (memb, reason, except_list));
 
                WriteAllExcept(user, false, 0, except_list, "PART %s%s%s", this->name.c_str(), reason.empty() ? "" : " :", reason.c_str());
 
+               // Remove this channel from the user's chanlist
                user->chans.erase(this);
-               this->RemoveAllPrefixes(user);
+               // Remove the Membership from this channel's userlist and destroy it
+               this->DelUser(membiter);
        }
-
-       if (!this->DelUser(user)) /* if there are no users left on the channel... */
-       {
-               chan_hash::iterator iter = ServerInstance->chanlist->find(this->name);
-               /* kill the record */
-               if (iter != ServerInstance->chanlist->end())
-               {
-                       ModResult res;
-                       FIRST_MOD_RESULT(ServerInstance, OnChannelPreDelete, res, (this));
-                       if (res == MOD_RES_DENY)
-                               return 1; // delete halted by module
-                       FOREACH_MOD(I_OnChannelDelete, OnChannelDelete(this));
-                       ServerInstance->chanlist->erase(iter);
-               }
-               return 0;
-       }
-
-       return this->GetUserCounter();
 }
 
-long Channel::ServerKickUser(User* user, const char* reason, const char* servername)
+void Channel::KickUser(User* src, User* victim, const std::string& reason, Membership* srcmemb)
 {
-       if (servername == NULL || *ServerInstance->Config->HideWhoisServer)
-               servername = ServerInstance->Config->ServerName;
-
-       ServerInstance->FakeClient->server = servername;
-       return this->KickUser(ServerInstance->FakeClient, user, reason);
-}
+       UserMembIter victimiter = userlist.find(victim);
+       Membership* memb = ((victimiter != userlist.end()) ? victimiter->second : NULL);
 
-long Channel::KickUser(User *src, User *user, const char* reason)
-{
-       if (!src || !user || !reason)
-               return this->GetUserCounter();
+       if (!memb)
+       {
+               src->WriteNumeric(ERR_USERNOTINCHANNEL, "%s %s %s :They are not on that channel",src->nick.c_str(), victim->nick.c_str(), this->name.c_str());
+               return;
+       }
 
-       Membership* memb = GetUser(user);
+       // Do the following checks only if the KICK is done by a local user;
+       // each server enforces its own rules.
        if (IS_LOCAL(src))
        {
-               if (!memb)
-               {
-                       src->WriteNumeric(ERR_USERNOTINCHANNEL, "%s %s %s :They are not on that channel",src->nick.c_str(), user->nick.c_str(), this->name.c_str());
-                       return this->GetUserCounter();
-               }
-               if ((ServerInstance->ULine(user->server)) && (!ServerInstance->ULine(src->server)))
-               {
-                       src->WriteNumeric(ERR_CHANOPRIVSNEEDED, "%s %s :Only a u-line may kick a u-line from a channel.",src->nick.c_str(), this->name.c_str());
-                       return this->GetUserCounter();
-               }
-
+               // Modules are allowed to explicitly allow or deny kicks done by local users
                ModResult res;
-               if (ServerInstance->ULine(src->server))
-                       res = MOD_RES_ALLOW;
-               else
-                       FIRST_MOD_RESULT(ServerInstance, OnUserPreKick, res, (src,memb,reason));
-
+               FIRST_MOD_RESULT(OnUserPreKick, res, (src,memb,reason));
                if (res == MOD_RES_DENY)
-                       return this->GetUserCounter();
+                       return;
 
                if (res == MOD_RES_PASSTHRU)
                {
-                       int them = this->GetPrefixValue(src);
-                       int us = this->GetPrefixValue(user);
-                       if ((them < HALFOP_VALUE) || (them < us))
+                       if (!srcmemb)
+                               srcmemb = GetUser(src);
+                       unsigned int them = srcmemb ? srcmemb->getRank() : 0;
+                       unsigned int req = HALFOP_VALUE;
+                       for (std::string::size_type i = 0; i < memb->modes.length(); i++)
                        {
-                               src->WriteNumeric(ERR_CHANOPRIVSNEEDED, "%s %s :You must be a channel %soperator",src->nick.c_str(), this->name.c_str(), them >= HALFOP_VALUE ? "" : "half-");
-                               return this->GetUserCounter();
+                               ModeHandler* mh = ServerInstance->Modes->FindMode(memb->modes[i], MODETYPE_CHANNEL);
+                               if (mh && mh->GetLevelRequired() > req)
+                                       req = mh->GetLevelRequired();
                        }
-               }
-       }
-
-       if (memb)
-       {
-               CUList except_list;
-               FOREACH_MOD(I_OnUserKick,OnUserKick(src, memb, reason, except_list));
-
-               WriteAllExcept(src, false, 0, except_list, "KICK %s %s :%s", name.c_str(), user->nick.c_str(), reason);
 
-               user->chans.erase(this);
-               this->RemoveAllPrefixes(user);
+                       if (them < req)
+                       {
+                               src->WriteNumeric(ERR_CHANOPRIVSNEEDED, "%s %s :You must be a channel %soperator",
+                                       src->nick.c_str(), this->name.c_str(), req > HALFOP_VALUE ? "" : "half-");
+                               return;
+                       }
+               }
        }
 
-       if (!this->DelUser(user))
-       /* if there are no users left on the channel */
-       {
-               chan_hash::iterator iter = ServerInstance->chanlist->find(this->name.c_str());
+       CUList except_list;
+       FOREACH_MOD(OnUserKick, (src, memb, reason, except_list));
 
-               /* kill the record */
-               if (iter != ServerInstance->chanlist->end())
-               {
-                       ModResult res;
-                       FIRST_MOD_RESULT(ServerInstance, OnChannelPreDelete, res, (this));
-                       if (res == MOD_RES_DENY)
-                               return 1; // delete halted by module
-                       FOREACH_MOD(I_OnChannelDelete, OnChannelDelete(this));
-                       ServerInstance->chanlist->erase(iter);
-               }
-               return 0;
-       }
+       WriteAllExcept(src, false, 0, except_list, "KICK %s %s :%s", name.c_str(), victim->nick.c_str(), reason.c_str());
 
-       return this->GetUserCounter();
+       victim->chans.erase(this);
+       this->DelUser(victimiter);
 }
 
 void Channel::WriteChannel(User* user, const char* text, ...)
 {
-       char textbuffer[MAXBUF];
-       va_list argsPtr;
-
-       if (!user || !text)
-               return;
-
-       va_start(argsPtr, text);
-       vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-       va_end(argsPtr);
-
-       this->WriteChannel(user, std::string(textbuffer));
+       std::string textbuffer;
+       VAFORMAT(textbuffer, text, text);
+       this->WriteChannel(user, textbuffer);
 }
 
 void Channel::WriteChannel(User* user, const std::string &text)
 {
-       char tb[MAXBUF];
-
-       if (!user)
-               return;
-
-       snprintf(tb,MAXBUF,":%s %s", user->GetFullHost().c_str(), text.c_str());
-       std::string out = tb;
+       const std::string message = ":" + user->GetFullHost() + " " + text;
 
        for (UserMembIter i = userlist.begin(); i != userlist.end(); i++)
        {
                if (IS_LOCAL(i->first))
-                       i->first->Write(out);
+                       i->first->Write(message);
        }
 }
 
-void Channel::WriteChannelWithServ(const char* ServName, const char* text, ...)
+void Channel::WriteChannelWithServ(const std::string& ServName, const char* text, ...)
 {
-       char textbuffer[MAXBUF];
-       va_list argsPtr;
-
-       if (!text)
-               return;
-
-       va_start(argsPtr, text);
-       vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-       va_end(argsPtr);
-
-       this->WriteChannelWithServ(ServName, std::string(textbuffer));
+       std::string textbuffer;
+       VAFORMAT(textbuffer, text, text);
+       this->WriteChannelWithServ(ServName, textbuffer);
 }
 
-void Channel::WriteChannelWithServ(const char* ServName, const std::string &text)
+void Channel::WriteChannelWithServ(const std::string& ServName, const std::string &text)
 {
-       char tb[MAXBUF];
-
-       snprintf(tb,MAXBUF,":%s %s", ServName ? ServName : ServerInstance->Config->ServerName, text.c_str());
-       std::string out = tb;
+       const std::string message = ":" + (ServName.empty() ? ServerInstance->Config->ServerName : ServName) + " " + text;
 
        for (UserMembIter i = userlist.begin(); i != userlist.end(); i++)
        {
                if (IS_LOCAL(i->first))
-                       i->first->Write(out);
+                       i->first->Write(message);
        }
 }
 
@@ -642,61 +568,40 @@ void Channel::WriteChannelWithServ(const char* ServName, const std::string &text
  * for the sender (for privmsg etc) */
 void Channel::WriteAllExceptSender(User* user, bool serversource, char status, const char* text, ...)
 {
-       char textbuffer[MAXBUF];
-       va_list argsPtr;
-
-       if (!text)
-               return;
-
-       va_start(argsPtr, text);
-       vsnprintf(textbuffer, MAXBUF, text, argsPtr);
-       va_end(argsPtr);
-
-       this->WriteAllExceptSender(user, serversource, status, std::string(textbuffer));
+       std::string textbuffer;
+       VAFORMAT(textbuffer, text, text);
+       this->WriteAllExceptSender(user, serversource, status, textbuffer);
 }
 
 void Channel::WriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const char* text, ...)
 {
-       char textbuffer[MAXBUF];
-       va_list argsPtr;
-
-       if (!text)
-               return;
-
-       int offset = snprintf(textbuffer,MAXBUF,":%s ", user->GetFullHost().c_str());
-
-       va_start(argsPtr, text);
-       vsnprintf(textbuffer + offset, MAXBUF - offset, text, argsPtr);
-       va_end(argsPtr);
-
-       this->RawWriteAllExcept(user, serversource, status, except_list, std::string(textbuffer));
+       std::string textbuffer;
+       VAFORMAT(textbuffer, text, text);
+       textbuffer = ":" + (serversource ? ServerInstance->Config->ServerName : user->GetFullHost()) + " " + textbuffer;
+       this->RawWriteAllExcept(user, serversource, status, except_list, textbuffer);
 }
 
 void Channel::WriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const std::string &text)
 {
-       char tb[MAXBUF];
-
-       snprintf(tb,MAXBUF,":%s %s", serversource ? ServerInstance->Config->ServerName : user->GetFullHost().c_str(), text.c_str());
-       std::string out = tb;
-
-       this->RawWriteAllExcept(user, serversource, status, except_list, std::string(tb));
+       const std::string message = ":" + (serversource ? ServerInstance->Config->ServerName : user->GetFullHost()) + " " + text;
+       this->RawWriteAllExcept(user, serversource, status, except_list, message);
 }
 
 void Channel::RawWriteAllExcept(User* user, bool serversource, char status, CUList &except_list, const std::string &out)
 {
-       char statmode = 0;
+       unsigned int minrank = 0;
        if (status)
        {
                ModeHandler* mh = ServerInstance->Modes->FindPrefix(status);
                if (mh)
-                       statmode = mh->GetModeChar();
+                       minrank = mh->GetPrefixRank();
        }
        for (UserMembIter i = userlist.begin(); i != userlist.end(); i++)
        {
-               if ((IS_LOCAL(i->first)) && (except_list.find(i->first) == except_list.end()))
+               if (IS_LOCAL(i->first) && (except_list.find(i->first) == except_list.end()))
                {
-                       /* User doesnt have the status we're after */
-                       if (statmode && !i->second->hasMode(statmode))
+                       /* User doesn't have the status we're after */
+                       if (minrank && i->second->getRank() < minrank)
                                continue;
 
                        i->first->Write(out);
@@ -711,76 +616,41 @@ void Channel::WriteAllExceptSender(User* user, bool serversource, char status, c
        this->WriteAllExcept(user, serversource, status, except_list, std::string(text));
 }
 
-/*
- * return a count of the users on a specific channel accounting for
- * invisible users who won't increase the count. e.g. for /LIST
- */
-int Channel::CountInvisible()
+const char* Channel::ChanModes(bool showkey)
 {
-       int count = 0;
-       for (UserMembIter i = userlist.begin(); i != userlist.end(); i++)
-       {
-               if (!(i->first->IsModeSet('i')))
-                       count++;
-       }
-
-       return count;
-}
+       static std::string scratch;
+       std::string sparam;
 
-char* Channel::ChanModes(bool showkey)
-{
-       static char scratch[MAXBUF];
-       static char sparam[MAXBUF];
-       char* offset = scratch;
-       std::string extparam;
-
-       *scratch = '\0';
-       *sparam = '\0';
+       scratch.clear();
 
        /* This was still iterating up to 190, Channel::modes is only 64 elements -- Om */
        for(int n = 0; n < 64; n++)
        {
                if(this->modes[n])
                {
-                       *offset++ = n + 65;
-                       extparam.clear();
-                       switch (n)
+                       scratch.push_back(n + 65);
+                       ModeHandler* mh = ServerInstance->Modes->FindMode(n+'A', MODETYPE_CHANNEL);
+                       if (!mh)
+                               continue;
+
+                       if (n == 'k' - 65 && !showkey)
                        {
-                               case CM_KEY:
-                                       // Unfortunately this must be special-cased, as we definitely don't want to always display key.
-                                       if (showkey)
-                                       {
-                                               extparam = this->GetModeParameter('k');
-                                       }
-                                       else
-                                       {
-                                               extparam = "<key>";
-                                       }
-                                       break;
-                               case CM_NOEXTERNAL:
-                               case CM_TOPICLOCK:
-                               case CM_INVITEONLY:
-                               case CM_MODERATED:
-                               case CM_SECRET:
-                               case CM_PRIVATE:
-                                       /* We know these have no parameters */
-                               break;
-                               default:
-                                       extparam = this->GetModeParameter(n + 65);
-                               break;
+                               sparam += " <key>";
                        }
-                       if (!extparam.empty())
+                       else
                        {
-                               charlcat(sparam,' ',MAXBUF);
-                               strlcat(sparam,extparam.c_str(),MAXBUF);
+                               const std::string param = this->GetModeParameter(mh);
+                               if (!param.empty())
+                               {
+                                       sparam += ' ';
+                                       sparam += param;
+                               }
                        }
                }
        }
 
-       /* Null terminate scratch */
-       *offset = '\0';
-       strlcat(scratch,sparam,MAXBUF);
-       return scratch;
+       scratch += sparam;
+       return scratch.c_str();
 }
 
 /* compile a userlist of a channel into a string, each nick seperated by
@@ -788,37 +658,33 @@ char* Channel::ChanModes(bool showkey)
  */
 void Channel::UserList(User *user)
 {
-       char list[MAXBUF];
-       size_t dlen, curlen;
-       ModResult call_modules;
-
-       if (!IS_LOCAL(user))
-               return;
-
-       FIRST_MOD_RESULT(ServerInstance, OnUserList, call_modules, (user, this));
-
-       if (call_modules != MOD_RES_ALLOW)
+       if (this->IsModeSet(secretmode) && !this->HasUser(user) && !user->HasPrivPermission("channels/auspex"))
        {
-               if ((this->IsModeSet('s')) && (!this->HasUser(user)))
-               {
-                       user->WriteNumeric(ERR_NOSUCHNICK, "%s %s :No such nick/channel",user->nick.c_str(), this->name.c_str());
-                       return;
-               }
+               user->WriteNumeric(ERR_NOSUCHNICK, "%s %s :No such nick/channel",user->nick.c_str(), this->name.c_str());
+               return;
        }
 
-       dlen = curlen = snprintf(list,MAXBUF,"%s %c %s :", user->nick.c_str(), this->IsModeSet('s') ? '@' : this->IsModeSet('p') ? '*' : '=',  this->name.c_str());
+       std::string list = user->nick;
+       list.push_back(' ');
+       list.push_back(this->IsModeSet(secretmode) ? '@' : this->IsModeSet(privatemode) ? '*' : '=');
+       list.push_back(' ');
+       list.append(this->name).append(" :");
+       std::string::size_type pos = list.size();
 
-       int numusers = 0;
-       char* ptr = list + dlen;
+       bool has_one = false;
 
        /* Improvement by Brain - this doesnt change in value, so why was it inside
         * the loop?
         */
        bool has_user = this->HasUser(user);
 
-       for (UserMembIter i = userlist.begin(); i != userlist.end(); i++)
+       std::string prefixlist;
+       std::string nick;
+       for (UserMembIter i = userlist.begin(); i != userlist.end(); ++i)
        {
-               if ((!has_user) && (i->first->IsModeSet('i')))
+               if (i->first->quitting)
+                       continue;
+               if ((!has_user) && (i->first->IsModeSet(invisiblemode)))
                {
                        /*
                         * user is +i, and source not on the channel, does not show
@@ -827,76 +693,39 @@ void Channel::UserList(User *user)
                        continue;
                }
 
-               std::string prefixlist = this->GetPrefixChar(i->first);
-               std::string nick = i->first->nick;
-
-               if (call_modules != MOD_RES_DENY)
-               {
-                       FOREACH_MOD(I_OnNamesListItem, OnNamesListItem(user, i->second, prefixlist, nick));
+               prefixlist = this->GetPrefixChar(i->first);
+               nick = i->first->nick;
 
-                       /* Nick was nuked, a module wants us to skip it */
-                       if (nick.empty())
-                               continue;
-               }
+               FOREACH_MOD(OnNamesListItem, (user, i->second, prefixlist, nick));
 
-               size_t ptrlen = 0;
+               /* Nick was nuked, a module wants us to skip it */
+               if (nick.empty())
+                       continue;
 
-               if (curlen + prefixlist.length() + nick.length() + 1 > 480)
+               if (list.size() + prefixlist.length() + nick.length() + 1 > 480)
                {
                        /* list overflowed into multiple numerics */
-                       user->WriteNumeric(RPL_NAMREPLY, std::string(list));
+                       user->WriteNumeric(RPL_NAMREPLY, list);
 
-                       /* reset our lengths */
-                       dlen = curlen = snprintf(list,MAXBUF,"%s %c %s :", user->nick.c_str(), this->IsModeSet('s') ? '@' : this->IsModeSet('p') ? '*' : '=', this->name.c_str());
-                       ptr = list + dlen;
-
-                       ptrlen = 0;
-                       numusers = 0;
+                       // Erase all nicks, keep the constant part
+                       list.erase(pos);
+                       has_one = false;
                }
 
-               ptrlen = snprintf(ptr, MAXBUF, "%s%s ", prefixlist.c_str(), nick.c_str());
-
-               curlen += ptrlen;
-               ptr += ptrlen;
+               list.append(prefixlist).append(nick).push_back(' ');
 
-               numusers++;
+               has_one = true;
        }
 
        /* if whats left in the list isnt empty, send it */
-       if (numusers)
+       if (has_one)
        {
-               user->WriteNumeric(RPL_NAMREPLY, std::string(list));
+               user->WriteNumeric(RPL_NAMREPLY, list);
        }
 
        user->WriteNumeric(RPL_ENDOFNAMES, "%s %s :End of /NAMES list.", user->nick.c_str(), this->name.c_str());
 }
 
-long Channel::GetMaxBans()
-{
-       /* Return the cached value if there is one */
-       if (this->maxbans)
-               return this->maxbans;
-
-       /* If there isnt one, we have to do some O(n) hax to find it the first time. (ick) */
-       for (std::map<std::string,int>::iterator n = ServerInstance->Config->maxbans.begin(); n != ServerInstance->Config->maxbans.end(); n++)
-       {
-               if (InspIRCd::Match(this->name, n->first, NULL))
-               {
-                       this->maxbans = n->second;
-                       return n->second;
-               }
-       }
-
-       /* Screw it, just return the default of 64 */
-       this->maxbans = 64;
-       return this->maxbans;
-}
-
-void Channel::ResetMaxBans()
-{
-       this->maxbans = 0;
-}
-
 /* returns the status character for a given user on a channel, e.g. @ for op,
  * % for halfop etc. If the user has several modes set, the highest mode
  * the user has must be returned.
@@ -914,7 +743,7 @@ const char* Channel::GetPrefixChar(User *user)
                {
                        char mchar = m->second->modes[i];
                        ModeHandler* mh = ServerInstance->Modes->FindMode(mchar, MODETYPE_CHANNEL);
-                       if (mh && mh->GetPrefixRank() > bestrank)
+                       if (mh && mh->GetPrefixRank() > bestrank && mh->GetPrefix())
                        {
                                bestrank = mh->GetPrefixRank();
                                pf[0] = mh->GetPrefix();
@@ -960,30 +789,20 @@ const char* Channel::GetAllPrefixChars(User* user)
 
 unsigned int Channel::GetPrefixValue(User* user)
 {
-       unsigned int bestrank = 0;
-
        UserMembIter m = userlist.find(user);
-       if (m != userlist.end())
-       {
-               for(unsigned int i=0; i < m->second->modes.length(); i++)
-               {
-                       char mchar = m->second->modes[i];
-                       ModeHandler* mh = ServerInstance->Modes->FindMode(mchar, MODETYPE_CHANNEL);
-                       if (mh && mh->GetPrefixRank() > bestrank)
-                               bestrank = mh->GetPrefixRank();
-               }
-       }
-       return bestrank;
+       if (m == userlist.end())
+               return 0;
+       return m->second->getRank();
 }
 
-void Channel::SetPrefix(User* user, char prefix, bool adding)
+bool Channel::SetPrefix(User* user, char prefix, bool adding)
 {
        ModeHandler* delta_mh = ServerInstance->Modes->FindMode(prefix, MODETYPE_CHANNEL);
        if (!delta_mh)
-               return;
+               return false;
        UserMembIter m = userlist.find(user);
        if (m == userlist.end())
-               return;
+               return false;
        for(unsigned int i=0; i < m->second->modes.length(); i++)
        {
                char mchar = m->second->modes[i];
@@ -994,18 +813,97 @@ void Channel::SetPrefix(User* user, char prefix, bool adding)
                                m->second->modes.substr(0,i) +
                                (adding ? std::string(1, prefix) : "") +
                                m->second->modes.substr(mchar == prefix ? i+1 : i);
-                       return;
+                       return adding != (mchar == prefix);
                }
        }
        if (adding)
                m->second->modes += std::string(1, prefix);
+       return adding;
 }
 
-void Channel::RemoveAllPrefixes(User* user)
+void Invitation::Create(Channel* c, LocalUser* u, time_t timeout)
 {
-       UserMembIter m = userlist.find(user);
-       if (m != userlist.end())
+       if ((timeout != 0) && (ServerInstance->Time() >= timeout))
+               // Expired, don't bother
+               return;
+
+       ServerInstance->Logs->Log("INVITATION", LOG_DEBUG, "Invitation::Create chan=%s user=%s", c->name.c_str(), u->uuid.c_str());
+
+       Invitation* inv = Invitation::Find(c, u, false);
+       if (inv)
+       {
+                if ((inv->expiry == 0) || (inv->expiry > timeout))
+                       return;
+               inv->expiry = timeout;
+               ServerInstance->Logs->Log("INVITATION", LOG_DEBUG, "Invitation::Create changed expiry in existing invitation %p", (void*) inv);
+       }
+       else
+       {
+               inv = new Invitation(c, u, timeout);
+               c->invites.push_back(inv);
+               u->invites.push_back(inv);
+               ServerInstance->Logs->Log("INVITATION", LOG_DEBUG, "Invitation::Create created new invitation %p", (void*) inv);
+       }
+}
+
+Invitation* Invitation::Find(Channel* c, LocalUser* u, bool check_expired)
+{
+       ServerInstance->Logs->Log("INVITATION", LOG_DEBUG, "Invitation::Find chan=%s user=%s check_expired=%d", c ? c->name.c_str() : "NULL", u ? u->uuid.c_str() : "NULL", check_expired);
+       if (!u || u->invites.empty())
+               return NULL;
+
+       InviteList locallist;
+       locallist.swap(u->invites);
+
+       Invitation* result = NULL;
+       for (InviteList::iterator i = locallist.begin(); i != locallist.end(); )
+       {
+               Invitation* inv = *i;
+               if ((check_expired) && (inv->expiry != 0) && (inv->expiry <= ServerInstance->Time()))
+               {
+                       /* Expired invite, remove it. */
+                       std::string expiration = ServerInstance->TimeString(inv->expiry);
+                       ServerInstance->Logs->Log("INVITATION", LOG_DEBUG, "Invitation::Find ecountered expired entry: %p expired %s", (void*) inv, expiration.c_str());
+                       i = locallist.erase(i);
+                       inv->cull();
+                       delete inv;
+               }
+               else
+               {
+                       /* Is it what we're searching for? */
+                       if (inv->chan == c)
+                       {
+                               result = inv;
+                               break;
+                       }
+                       ++i;
+               }
+       }
+
+       locallist.swap(u->invites);
+       ServerInstance->Logs->Log("INVITATION", LOG_DEBUG, "Invitation::Find result=%p", (void*) result);
+       return result;
+}
+
+Invitation::~Invitation()
+{
+       // Remove this entry from both lists
+       InviteList::iterator it = std::find(chan->invites.begin(), chan->invites.end(), this);
+       if (it != chan->invites.end())
+               chan->invites.erase(it);
+       it = std::find(user->invites.begin(), user->invites.end(), this);
+       if (it != user->invites.end())
+               user->invites.erase(it);
+}
+
+void InviteBase::ClearInvites()
+{
+       ServerInstance->Logs->Log("INVITEBASE", LOG_DEBUG, "InviteBase::ClearInvites %p", (void*) this);
+       InviteList locallist;
+       locallist.swap(invites);
+       for (InviteList::const_iterator i = locallist.begin(); i != locallist.end(); ++i)
        {
-               m->second->modes.clear();
+               (*i)->cull();
+               delete *i;
        }
 }