]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/m_spanningtree/main.cpp
Purge code for Windows XP and MSVC pre-2015.
[user/henk/code/inspircd.git] / src / modules / m_spanningtree / main.cpp
index 5f06cad586a4eee63e2e4061c4ee7c4cb9af047f..321ed99b839552b50c1d392c899227bf0c081031 100644 (file)
  */
 
 
-/* $ModDesc: Provides a spanning tree server link protocol */
-
 #include "inspircd.h"
 #include "socket.h"
 #include "xline.h"
+#include "iohook.h"
+#include "modules/spanningtree.h"
 
-#include "cachetimer.h"
 #include "resolvers.h"
 #include "main.h"
 #include "utils.h"
 #include "link.h"
 #include "treesocket.h"
 #include "commands.h"
-#include "protocolinterface.h"
+#include "translate.h"
 
 ModuleSpanningTree::ModuleSpanningTree()
-       : KeepNickTS(false)
+       : rconnect(this), rsquit(this), map(this)
+       , commands(this)
+       , currmembid(0)
+       , eventprov(this, "event/spanningtree")
+       , DNS(this, "DNS")
+       , loopCall(false)
 {
-       Utils = new SpanningTreeUtilities(this);
-       commands = new SpanningTreeCommands(this);
-       RefreshTimer = NULL;
 }
 
 SpanningTreeCommands::SpanningTreeCommands(ModuleSpanningTree* module)
-       : rconnect(module, module->Utils), rsquit(module, module->Utils),
-       svsjoin(module), svspart(module), svsnick(module), metadata(module),
-       uid(module), opertype(module), fjoin(module), fmode(module), ftopic(module),
-       fhost(module), fident(module), fname(module)
+       : svsjoin(module), svspart(module), svsnick(module), metadata(module),
+       uid(module), opertype(module), fjoin(module), ijoin(module), resync(module),
+       fmode(module), ftopic(module), fhost(module), fident(module), fname(module),
+       away(module), addline(module), delline(module), encap(module), idle(module),
+       nick(module), ping(module), pong(module), save(module),
+       server(module), squit(module), snonotice(module),
+       endburst(module), sinfo(module), num(module)
 {
 }
 
+namespace
+{
+       void SetLocalUsersServer(Server* newserver)
+       {
+               // Does not change the server of quitting users because those are not in the list
+
+               ServerInstance->FakeClient->server = newserver;
+               const UserManager::LocalList& list = ServerInstance->Users.GetLocalUsers();
+               for (UserManager::LocalList::const_iterator i = list.begin(); i != list.end(); ++i)
+                       (*i)->server = newserver;
+       }
+
+       void ResetMembershipIds()
+       {
+               // Set all membership ids to 0
+               const UserManager::LocalList& list = ServerInstance->Users.GetLocalUsers();
+               for (UserManager::LocalList::iterator i = list.begin(); i != list.end(); ++i)
+               {
+                       LocalUser* user = *i;
+                       for (User::ChanList::iterator j = user->chans.begin(); j != user->chans.end(); ++j)
+                               (*j)->id = 0;
+               }
+       }
+}
+
 void ModuleSpanningTree::init()
 {
-       ServerInstance->Modules->AddService(commands->rconnect);
-       ServerInstance->Modules->AddService(commands->rsquit);
-       ServerInstance->Modules->AddService(commands->svsjoin);
-       ServerInstance->Modules->AddService(commands->svspart);
-       ServerInstance->Modules->AddService(commands->svsnick);
-       ServerInstance->Modules->AddService(commands->metadata);
-       ServerInstance->Modules->AddService(commands->uid);
-       ServerInstance->Modules->AddService(commands->opertype);
-       ServerInstance->Modules->AddService(commands->fjoin);
-       ServerInstance->Modules->AddService(commands->fmode);
-       ServerInstance->Modules->AddService(commands->ftopic);
-       ServerInstance->Modules->AddService(commands->fhost);
-       ServerInstance->Modules->AddService(commands->fident);
-       ServerInstance->Modules->AddService(commands->fname);
-       RefreshTimer = new CacheRefreshTimer(Utils);
-       ServerInstance->Timers->AddTimer(RefreshTimer);
-
-       Implementation eventlist[] =
-       {
-               I_OnPreCommand, I_OnGetServerDescription, I_OnUserInvite, I_OnPostTopicChange,
-               I_OnWallops, I_OnUserNotice, I_OnUserMessage, I_OnBackgroundTimer, I_OnUserJoin,
-               I_OnChangeHost, I_OnChangeName, I_OnChangeIdent, I_OnUserPart, I_OnUnloadModule,
-               I_OnUserQuit, I_OnUserPostNick, I_OnUserKick, I_OnRemoteKill, I_OnRehash, I_OnPreRehash,
-               I_OnOper, I_OnAddLine, I_OnDelLine, I_OnMode, I_OnLoadModule, I_OnStats,
-               I_OnSetAway, I_OnPostCommand, I_OnUserConnect, I_OnAcceptConnection
-       };
-       ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
-
-       delete ServerInstance->PI;
-       ServerInstance->PI = new SpanningTreeProtocolInterface(Utils);
-       loopCall = false;
-
-       // update our local user count
-       Utils->TreeRoot->SetUserCount(ServerInstance->Users->local_users.size());
+       ServerInstance->SNO->EnableSnomask('l', "LINK");
+
+       ResetMembershipIds();
+
+       Utils = new SpanningTreeUtilities(this);
+       Utils->TreeRoot = new TreeServer;
+
+       ServerInstance->PI = &protocolinterface;
+
+       delete ServerInstance->FakeClient->server;
+       SetLocalUsersServer(Utils->TreeRoot);
 }
 
 void ModuleSpanningTree::ShowLinks(TreeServer* Current, User* user, int hops)
@@ -98,44 +104,39 @@ void ModuleSpanningTree::ShowLinks(TreeServer* Current, User* user, int hops)
        {
                Parent = Current->GetParent()->GetName();
        }
-       for (unsigned int q = 0; q < Current->ChildCount(); q++)
+
+       const TreeServer::ChildServers& children = Current->GetChildren();
+       for (TreeServer::ChildServers::const_iterator i = children.begin(); i != children.end(); ++i)
        {
-               if ((Current->GetChild(q)->Hidden) || ((Utils->HideULines) && (ServerInstance->ULine(Current->GetChild(q)->GetName()))))
+               TreeServer* server = *i;
+               if ((server->Hidden) || ((Utils->HideULines) && (server->IsULine())))
                {
-                       if (IS_OPER(user))
+                       if (user->IsOper())
                        {
-                                ShowLinks(Current->GetChild(q),user,hops+1);
+                                ShowLinks(server, user, hops+1);
                        }
                }
                else
                {
-                       ShowLinks(Current->GetChild(q),user,hops+1);
+                       ShowLinks(server, user, hops+1);
                }
        }
        /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
-       if ((Utils->HideULines) && (ServerInstance->ULine(Current->GetName())) && (!IS_OPER(user)))
+       if ((Utils->HideULines) && (Current->IsULine()) && (!user->IsOper()))
                return;
        /* Or if the server is hidden and they're not an oper */
-       else if ((Current->Hidden) && (!IS_OPER(user)))
+       else if ((Current->Hidden) && (!user->IsOper()))
                return;
 
-       std::string servername = Current->GetName();
-       user->WriteNumeric(364, "%s %s %s :%d %s",      user->nick.c_str(), servername.c_str(),
-                       (Utils->FlatLinks && (!IS_OPER(user))) ? ServerInstance->Config->ServerName.c_str() : Parent.c_str(),
-                       (Utils->FlatLinks && (!IS_OPER(user))) ? 0 : hops,
-                       Current->GetDesc().c_str());
-}
-
-int ModuleSpanningTree::CountServs()
-{
-       return Utils->serverlist.size();
+       user->WriteNumeric(RPL_LINKS, Current->GetName(),
+                       (((Utils->FlatLinks) && (!user->IsOper())) ? ServerInstance->Config->ServerName : Parent),
+                       InspIRCd::Format("%d %s", (((Utils->FlatLinks) && (!user->IsOper())) ? 0 : hops), Current->GetDesc().c_str()));
 }
 
 void ModuleSpanningTree::HandleLinks(const std::vector<std::string>& parameters, User* user)
 {
        ShowLinks(Utils->TreeRoot,user,0);
-       user->WriteNumeric(365, "%s * :End of /LINKS list.",user->nick.c_str());
-       return;
+       user->WriteNumeric(RPL_ENDOFLINKS, '*', "End of /LINKS list.");
 }
 
 std::string ModuleSpanningTree::TimeToStr(time_t secs)
@@ -152,79 +153,6 @@ std::string ModuleSpanningTree::TimeToStr(time_t secs)
                        + ConvToStr(secs) + "s");
 }
 
-void ModuleSpanningTree::DoPingChecks(time_t curtime)
-{
-       /*
-        * Cancel remote burst mode on any servers which still have it enabled due to latency/lack of data.
-        * This prevents lost REMOTECONNECT notices
-        */
-       long ts = ServerInstance->Time() * 1000 + (ServerInstance->Time_ns() / 1000000);
-
-restart:
-       for (server_hash::iterator i = Utils->serverlist.begin(); i != Utils->serverlist.end(); i++)
-       {
-               TreeServer *s = i->second;
-
-               if (s->GetSocket() && s->GetSocket()->GetLinkState() == DYING)
-               {
-                       s->GetSocket()->Close();
-                       goto restart;
-               }
-
-               // Fix for bug #792, do not ping servers that are not connected yet!
-               // Remote servers have Socket == NULL and local connected servers have
-               // Socket->LinkState == CONNECTED
-               if (s->GetSocket() && s->GetSocket()->GetLinkState() != CONNECTED)
-                       continue;
-
-               // Now do PING checks on all servers
-               TreeServer *mts = Utils->BestRouteTo(s->GetID());
-
-               if (mts)
-               {
-                       // Only ping if this server needs one
-                       if (curtime >= s->NextPingTime())
-                       {
-                               // And if they answered the last
-                               if (s->AnsweredLastPing())
-                               {
-                                       // They did, send a ping to them
-                                       s->SetNextPingTime(curtime + Utils->PingFreq);
-                                       TreeSocket *tsock = mts->GetSocket();
-
-                                       // ... if we can find a proper route to them
-                                       if (tsock)
-                                       {
-                                               tsock->WriteLine(":" + ServerInstance->Config->GetSID() + " PING " +
-                                                               ServerInstance->Config->GetSID() + " " + s->GetID());
-                                               s->LastPingMsec = ts;
-                                       }
-                               }
-                               else
-                               {
-                                       // They didn't answer the last ping, if they are locally connected, get rid of them.
-                                       TreeSocket *sock = s->GetSocket();
-                                       if (sock)
-                                       {
-                                               sock->SendError("Ping timeout");
-                                               sock->Close();
-                                               goto restart;
-                                       }
-                               }
-                       }
-
-                       // If warn on ping enabled and not warned and the difference is sufficient and they didn't answer the last ping...
-                       if ((Utils->PingWarnTime) && (!s->Warned) && (curtime >= s->NextPingTime() - (Utils->PingFreq - Utils->PingWarnTime)) && (!s->AnsweredLastPing()))
-                       {
-                               /* The server hasnt responded, send a warning to opers */
-                               std::string servername = s->GetName();
-                               ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 has not responded to PING for %d seconds, high latency.", servername.c_str(), Utils->PingWarnTime);
-                               s->Warned = true;
-                       }
-               }
-       }
-}
-
 void ModuleSpanningTree::ConnectServer(Autoconnect* a, bool on_timer)
 {
        if (!a)
@@ -266,13 +194,12 @@ void ModuleSpanningTree::ConnectServer(Link* x, Autoconnect* y)
 {
        bool ipvalid = true;
 
-       if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name), rfc_case_insensitive_map))
+       if (InspIRCd::Match(ServerInstance->Config->ServerName, x->Name, ascii_case_insensitive_map))
        {
                ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Not connecting to myself.");
                return;
        }
 
-       QueryType start_type = DNS_QUERY_AAAA;
        if (strchr(x->IPAddr.c_str(),':'))
        {
                in6_addr n;
@@ -282,15 +209,15 @@ void ModuleSpanningTree::ConnectServer(Link* x, Autoconnect* y)
        else
        {
                in_addr n;
-               if (inet_aton(x->IPAddr.c_str(),&n) < 1)
+               if (inet_pton(AF_INET, x->IPAddr.c_str(),&n) < 1)
                        ipvalid = false;
        }
 
        /* Do we already have an IP? If so, no need to resolve it. */
        if (ipvalid)
        {
-               /* Gave a hook, but it wasnt one we know */
-               TreeSocket* newsocket = new TreeSocket(Utils, x, y, x->IPAddr);
+               // Create a TreeServer object that will start connecting immediately in the background
+               TreeSocket* newsocket = new TreeSocket(x, y, x->IPAddr);
                if (newsocket->GetFd() > -1)
                {
                        /* Handled automatically on success */
@@ -302,17 +229,30 @@ void ModuleSpanningTree::ConnectServer(Link* x, Autoconnect* y)
                        ServerInstance->GlobalCulls.AddItem(newsocket);
                }
        }
+       else if (!DNS)
+       {
+               ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: Hostname given and m_dns.so is not loaded, unable to resolve.", x->Name.c_str());
+       }
        else
        {
+               // Guess start_type from bindip aftype
+               DNS::QueryType start_type = DNS::QUERY_AAAA;
+               irc::sockets::sockaddrs bind;
+               if ((!x->Bind.empty()) && (irc::sockets::aptosa(x->Bind, 0, bind)))
+               {
+                       if (bind.sa.sa_family == AF_INET)
+                               start_type = DNS::QUERY_A;
+               }
+
+               ServernameResolver* snr = new ServernameResolver(*DNS, x->IPAddr, x, start_type, y);
                try
                {
-                       bool cached = false;
-                       ServernameResolver* snr = new ServernameResolver(Utils, x->IPAddr, x, cached, start_type, y);
-                       ServerInstance->AddResolver(snr, cached);
+                       DNS->Process(snr);
                }
-               catch (ModuleException& e)
+               catch (DNS::Exception& e)
                {
-                       ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason());
+                       delete snr;
+                       ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason().c_str());
                        ConnectServer(y, false);
                }
        }
@@ -356,224 +296,130 @@ void ModuleSpanningTree::DoConnectTimeout(time_t curtime)
 
 ModResult ModuleSpanningTree::HandleVersion(const std::vector<std::string>& parameters, User* user)
 {
-       // we've already checked if pcnt > 0, so this is safe
+       // We've already confirmed that !parameters.empty(), so this is safe
        TreeServer* found = Utils->FindServerMask(parameters[0]);
        if (found)
        {
-               std::string Version = found->GetVersion();
-               user->WriteNumeric(351, "%s :%s",user->nick.c_str(),Version.c_str());
                if (found == Utils->TreeRoot)
                {
-                       ServerInstance->Config->Send005(user);
+                       // Pass to default VERSION handler.
+                       return MOD_RES_PASSTHRU;
                }
+
+               // If an oper wants to see the version then show the full version string instead of the normal,
+               // but only if it is non-empty.
+               // If it's empty it might be that the server is still syncing (full version hasn't arrived yet)
+               // or the server is a 2.0 server and does not send a full version.
+               bool showfull = ((user->IsOper()) && (!found->GetFullVersion().empty()));
+               const std::string& Version = (showfull ? found->GetFullVersion() : found->GetVersion());
+               user->WriteNumeric(RPL_VERSION, Version);
        }
        else
        {
-               user->WriteNumeric(402, "%s %s :No such server",user->nick.c_str(),parameters[0].c_str());
+               user->WriteNumeric(ERR_NOSUCHSERVER, parameters[0], "No such server");
        }
        return MOD_RES_DENY;
 }
 
-/* This method will attempt to get a message to a remote user.
- */
-void ModuleSpanningTree::RemoteMessage(User* user, const char* format, ...)
-{
-       char text[MAXBUF];
-       va_list argsPtr;
-
-       va_start(argsPtr, format);
-       vsnprintf(text, MAXBUF, format, argsPtr);
-       va_end(argsPtr);
-
-       if (IS_LOCAL(user))
-               user->WriteServ("NOTICE %s :%s", user->nick.c_str(), text);
-       else
-               ServerInstance->PI->SendUserNotice(user, text);
-}
-
 ModResult ModuleSpanningTree::HandleConnect(const std::vector<std::string>& parameters, User* user)
 {
        for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
        {
                Link* x = *i;
-               if (InspIRCd::Match(x->Name.c_str(),parameters[0], rfc_case_insensitive_map))
+               if (InspIRCd::Match(x->Name, parameters[0], ascii_case_insensitive_map))
                {
-                       if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name), rfc_case_insensitive_map))
+                       if (InspIRCd::Match(ServerInstance->Config->ServerName, x->Name, ascii_case_insensitive_map))
                        {
-                               RemoteMessage(user, "*** CONNECT: Server \002%s\002 is ME, not connecting.",x->Name.c_str());
+                               user->WriteRemoteNotice(InspIRCd::Format("*** CONNECT: Server \002%s\002 is ME, not connecting.", x->Name.c_str()));
                                return MOD_RES_DENY;
                        }
 
-                       TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
+                       TreeServer* CheckDupe = Utils->FindServer(x->Name);
                        if (!CheckDupe)
                        {
-                               RemoteMessage(user, "*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
+                               user->WriteRemoteNotice(InspIRCd::Format("*** CONNECT: Connecting to server: \002%s\002 (%s:%d)", x->Name.c_str(), (x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()), x->Port));
                                ConnectServer(x);
                                return MOD_RES_DENY;
                        }
                        else
                        {
-                               std::string servername = CheckDupe->GetParent()->GetName();
-                               RemoteMessage(user, "*** CONNECT: Server \002%s\002 already exists on the network and is connected via \002%s\002", x->Name.c_str(), servername.c_str());
+                               user->WriteRemoteNotice(InspIRCd::Format("*** CONNECT: Server \002%s\002 already exists on the network and is connected via \002%s\002", x->Name.c_str(), CheckDupe->GetParent()->GetName().c_str()));
                                return MOD_RES_DENY;
                        }
                }
        }
-       RemoteMessage(user, "*** CONNECT: No server matching \002%s\002 could be found in the config file.",parameters[0].c_str());
+       user->WriteRemoteNotice(InspIRCd::Format("*** CONNECT: No server matching \002%s\002 could be found in the config file.", parameters[0].c_str()));
        return MOD_RES_DENY;
 }
 
-void ModuleSpanningTree::OnGetServerDescription(const std::string &servername,std::string &description)
-{
-       TreeServer* s = Utils->FindServer(servername);
-       if (s)
-       {
-               description = s->GetDesc();
-       }
-}
-
-void ModuleSpanningTree::OnUserInvite(User* source,User* dest,Channel* channel, time_t expiry)
+void ModuleSpanningTree::OnUserInvite(User* source, User* dest, Channel* channel, time_t expiry, unsigned int notifyrank, CUList& notifyexcepts)
 {
        if (IS_LOCAL(source))
        {
-               parameterlist params;
+               CmdBuilder params(source, "INVITE");
                params.push_back(dest->uuid);
                params.push_back(channel->name);
+               params.push_int(channel->age);
                params.push_back(ConvToStr(expiry));
-               Utils->DoOneToMany(source->uuid,"INVITE",params);
+               params.Broadcast();
        }
 }
 
-void ModuleSpanningTree::OnPostTopicChange(User* user, Channel* chan, const std::string &topic)
-{
-       // Drop remote events on the floor.
-       if (!IS_LOCAL(user))
-               return;
-
-       parameterlist params;
-       params.push_back(chan->name);
-       params.push_back(":"+topic);
-       Utils->DoOneToMany(user->uuid,"TOPIC",params);
-}
-
-void ModuleSpanningTree::OnWallops(User* user, const std::string &text)
+ModResult ModuleSpanningTree::OnPreTopicChange(User* user, Channel* chan, const std::string& topic)
 {
-       if (IS_LOCAL(user))
+       // XXX: Deny topic changes if the current topic set time is the current time or is in the future because
+       // other servers will drop our FTOPIC. This restriction will be removed when the protocol is updated.
+       if ((chan->topicset >= ServerInstance->Time()) && (Utils->serverlist.size() > 1))
        {
-               parameterlist params;
-               params.push_back(":"+text);
-               Utils->DoOneToMany(user->uuid,"WALLOPS",params);
+               user->WriteNumeric(ERR_CHANOPRIVSNEEDED, chan->name, "Retry topic change later");
+               return MOD_RES_DENY;
        }
+       return MOD_RES_PASSTHRU;
 }
 
-void ModuleSpanningTree::OnUserNotice(User* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list)
+void ModuleSpanningTree::OnPostTopicChange(User* user, Channel* chan, const std::string &topic)
 {
-       /* Server origin */
-       if (user == NULL)
+       // Drop remote events on the floor.
+       if (!IS_LOCAL(user))
                return;
 
-       if (target_type == TYPE_USER)
-       {
-               User* d = (User*)dest;
-               if (!IS_LOCAL(d) && IS_LOCAL(user))
-               {
-                       parameterlist params;
-                       params.push_back(d->uuid);
-                       params.push_back(":"+text);
-                       Utils->DoOneToOne(user->uuid,"NOTICE",params,d->server);
-               }
-       }
-       else if (target_type == TYPE_CHANNEL)
-       {
-               if (IS_LOCAL(user))
-               {
-                       Channel *c = (Channel*)dest;
-                       if (c)
-                       {
-                               std::string cname = c->name;
-                               if (status)
-                                       cname = status + cname;
-                               TreeServerList list;
-                               Utils->GetListOfServersForChannel(c,list,status,exempt_list);
-                               for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
-                               {
-                                       TreeSocket* Sock = i->second->GetSocket();
-                                       if (Sock)
-                                               Sock->WriteLine(":"+std::string(user->uuid)+" NOTICE "+cname+" :"+text);
-                               }
-                       }
-               }
-       }
-       else if (target_type == TYPE_SERVER)
-       {
-               if (IS_LOCAL(user))
-               {
-                       char* target = (char*)dest;
-                       parameterlist par;
-                       par.push_back(target);
-                       par.push_back(":"+text);
-                       Utils->DoOneToMany(user->uuid,"NOTICE",par);
-               }
-       }
+       CommandFTopic::Builder(user, chan).Broadcast();
 }
 
-void ModuleSpanningTree::OnUserMessage(User* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list)
+void ModuleSpanningTree::OnUserMessage(User* user, void* dest, int target_type, const std::string& text, char status, const CUList& exempt_list, MessageType msgtype)
 {
-       /* Server origin */
-       if (user == NULL)
+       if (!IS_LOCAL(user))
                return;
 
+       const char* message_type = (msgtype == MSG_PRIVMSG ? "PRIVMSG" : "NOTICE");
        if (target_type == TYPE_USER)
        {
-               // route private messages which are targetted at clients only to the server
-               // which needs to receive them
-               User* d = (User*)dest;
-               if (!IS_LOCAL(d) && (IS_LOCAL(user)))
+               User* d = (User*) dest;
+               if (!IS_LOCAL(d))
                {
-                       parameterlist params;
+                       CmdBuilder params(user, message_type);
                        params.push_back(d->uuid);
-                       params.push_back(":"+text);
-                       Utils->DoOneToOne(user->uuid,"PRIVMSG",params,d->server);
+                       params.push_last(text);
+                       params.Unicast(d);
                }
        }
        else if (target_type == TYPE_CHANNEL)
        {
-               if (IS_LOCAL(user))
-               {
-                       Channel *c = (Channel*)dest;
-                       if (c)
-                       {
-                               std::string cname = c->name;
-                               if (status)
-                                       cname = status + cname;
-                               TreeServerList list;
-                               Utils->GetListOfServersForChannel(c,list,status,exempt_list);
-                               for (TreeServerList::iterator i = list.begin(); i != list.end(); i++)
-                               {
-                                       TreeSocket* Sock = i->second->GetSocket();
-                                       if (Sock)
-                                               Sock->WriteLine(":"+std::string(user->uuid)+" PRIVMSG "+cname+" :"+text);
-                               }
-                       }
-               }
+               Utils->SendChannelMessage(user->uuid, (Channel*)dest, text, status, exempt_list, message_type);
        }
        else if (target_type == TYPE_SERVER)
        {
-               if (IS_LOCAL(user))
-               {
-                       char* target = (char*)dest;
-                       parameterlist par;
-                       par.push_back(target);
-                       par.push_back(":"+text);
-                       Utils->DoOneToMany(user->uuid,"PRIVMSG",par);
-               }
+               char* target = (char*) dest;
+               CmdBuilder par(user, message_type);
+               par.push_back(target);
+               par.push_last(text);
+               par.Broadcast();
        }
 }
 
 void ModuleSpanningTree::OnBackgroundTimer(time_t curtime)
 {
        AutoConnectServers(curtime);
-       DoPingChecks(curtime);
        DoConnectTimeout(curtime);
 }
 
@@ -582,25 +428,10 @@ void ModuleSpanningTree::OnUserConnect(LocalUser* user)
        if (user->quitting)
                return;
 
-       parameterlist params;
-       params.push_back(user->uuid);
-       params.push_back(ConvToStr(user->age));
-       params.push_back(user->nick);
-       params.push_back(user->host);
-       params.push_back(user->dhost);
-       params.push_back(user->ident);
-       params.push_back(user->GetIPString());
-       params.push_back(ConvToStr(user->signon));
-       params.push_back("+"+std::string(user->FormatModes(true)));
-       params.push_back(":"+user->fullname);
-       Utils->DoOneToMany(ServerInstance->Config->GetSID(), "UID", params);
+       CommandUID::Builder(user).Broadcast();
 
-       if (IS_OPER(user))
-       {
-               params.clear();
-               params.push_back(user->oper->name);
-               Utils->DoOneToMany(user->uuid,"OPERTYPE",params);
-       }
+       if (user->IsOper())
+               CommandOpertype::Builder(user).Broadcast();
 
        for(Extensible::ExtensibleStore::const_iterator i = user->GetExtList().begin(); i != user->GetExtList().end(); i++)
        {
@@ -610,23 +441,36 @@ void ModuleSpanningTree::OnUserConnect(LocalUser* user)
                        ServerInstance->PI->SendMetaData(user, item->name, value);
        }
 
-       Utils->TreeRoot->SetUserCount(1); // increment by 1
+       Utils->TreeRoot->UserCount++;
 }
 
-void ModuleSpanningTree::OnUserJoin(Membership* memb, bool sync, bool created, CUList& excepts)
+void ModuleSpanningTree::OnUserJoin(Membership* memb, bool sync, bool created_by_local, CUList& excepts)
 {
        // Only do this for local users
-       if (IS_LOCAL(memb->user))
+       if (!IS_LOCAL(memb->user))
+               return;
+
+       // Assign the current membership id to the new Membership and increase it
+       memb->id = currmembid++;
+
+       if (created_by_local)
+       {
+               CommandFJoin::Builder params(memb->chan);
+               params.add(memb);
+               params.finalize();
+               params.Broadcast();
+       }
+       else
        {
-               parameterlist params;
-               // set up their permissions and the channel TS with FJOIN.
-               // All users are FJOINed now, because a module may specify
-               // new joining permissions for the user.
+               CmdBuilder params(memb->user, "IJOIN");
                params.push_back(memb->chan->name);
-               params.push_back(ConvToStr(memb->chan->age));
-               params.push_back(std::string("+") + memb->chan->ChanModes(true));
-               params.push_back(memb->modes+","+memb->user->uuid);
-               Utils->DoOneToMany(ServerInstance->Config->GetSID(),"FJOIN",params);
+               params.push_int(memb->id);
+               if (!memb->modes.empty())
+               {
+                       params.push_back(ConvToStr(memb->chan->age));
+                       params.push_back(memb->modes);
+               }
+               params.Broadcast();
        }
 }
 
@@ -635,9 +479,7 @@ void ModuleSpanningTree::OnChangeHost(User* user, const std::string &newhost)
        if (user->registered != REG_ALL || !IS_LOCAL(user))
                return;
 
-       parameterlist params;
-       params.push_back(newhost);
-       Utils->DoOneToMany(user->uuid,"FHOST",params);
+       CmdBuilder(user, "FHOST").push(newhost).Broadcast();
 }
 
 void ModuleSpanningTree::OnChangeName(User* user, const std::string &gecos)
@@ -645,9 +487,7 @@ void ModuleSpanningTree::OnChangeName(User* user, const std::string &gecos)
        if (user->registered != REG_ALL || !IS_LOCAL(user))
                return;
 
-       parameterlist params;
-       params.push_back(":" + gecos);
-       Utils->DoOneToMany(user->uuid,"FNAME",params);
+       CmdBuilder(user, "FNAME").push_last(gecos).Broadcast();
 }
 
 void ModuleSpanningTree::OnChangeIdent(User* user, const std::string &ident)
@@ -655,101 +495,77 @@ void ModuleSpanningTree::OnChangeIdent(User* user, const std::string &ident)
        if ((user->registered != REG_ALL) || (!IS_LOCAL(user)))
                return;
 
-       parameterlist params;
-       params.push_back(ident);
-       Utils->DoOneToMany(user->uuid,"FIDENT",params);
+       CmdBuilder(user, "FIDENT").push(ident).Broadcast();
 }
 
 void ModuleSpanningTree::OnUserPart(Membership* memb, std::string &partmessage, CUList& excepts)
 {
        if (IS_LOCAL(memb->user))
        {
-               parameterlist params;
+               CmdBuilder params(memb->user, "PART");
                params.push_back(memb->chan->name);
                if (!partmessage.empty())
-                       params.push_back(":"+partmessage);
-               Utils->DoOneToMany(memb->user->uuid,"PART",params);
+                       params.push_last(partmessage);
+               params.Broadcast();
        }
 }
 
 void ModuleSpanningTree::OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
 {
-       if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
+       if (IS_LOCAL(user))
        {
-               parameterlist params;
-
                if (oper_message != reason)
+                       ServerInstance->PI->SendMetaData(user, "operquit", oper_message);
+
+               CmdBuilder(user, "QUIT").push_last(reason).Broadcast();
+       }
+       else
+       {
+               // Hide the message if one of the following is true:
+               // - User is being quit due to a netsplit and quietbursts is on
+               // - Server is a silent uline
+               TreeServer* server = TreeServer::Get(user);
+               bool hide = (((server->IsDead()) && (Utils->quiet_bursts)) || (server->IsSilentULine()));
+               if (!hide)
                {
-                       params.push_back(":"+oper_message);
-                       Utils->DoOneToMany(user->uuid,"OPERQUIT",params);
+                       ServerInstance->SNO->WriteToSnoMask('Q', "Client exiting on server %s: %s (%s) [%s]",
+                               user->server->GetName().c_str(), user->GetFullRealHost().c_str(), user->GetIPString().c_str(), oper_message.c_str());
                }
-               params.clear();
-               params.push_back(":"+reason);
-               Utils->DoOneToMany(user->uuid,"QUIT",params);
        }
 
-       // Regardless, We need to modify the user Counts..
-       TreeServer* SourceServer = Utils->FindServer(user->server);
-       if (SourceServer)
-       {
-               SourceServer->SetUserCount(-1); // decrement by 1
-       }
+       // Regardless, update the UserCount
+       TreeServer::Get(user)->UserCount--;
 }
 
 void ModuleSpanningTree::OnUserPostNick(User* user, const std::string &oldnick)
 {
        if (IS_LOCAL(user))
        {
-               parameterlist params;
+               // The nick TS is updated by the core, we don't do it
+               CmdBuilder params(user, "NICK");
                params.push_back(user->nick);
-
-               /** IMPORTANT: We don't update the TS if the oldnick is just a case change of the newnick!
-                */
-               if ((irc::string(user->nick.c_str()) != assign(oldnick)) && (!this->KeepNickTS))
-                       user->age = ServerInstance->Time();
-
                params.push_back(ConvToStr(user->age));
-               Utils->DoOneToMany(user->uuid,"NICK",params);
-               this->KeepNickTS = false;
+               params.Broadcast();
        }
-       else if (!loopCall && user->nick == user->uuid)
+       else if (!loopCall)
        {
-               parameterlist params;
-               params.push_back(user->uuid);
-               params.push_back(ConvToStr(user->age));
-               Utils->DoOneToMany(ServerInstance->Config->GetSID(),"SAVE",params);
+               ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "WARNING: Changed nick of remote user %s from %s to %s TS %lu by ourselves!", user->uuid.c_str(), oldnick.c_str(), user->nick.c_str(), (unsigned long) user->age);
        }
 }
 
 void ModuleSpanningTree::OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& excepts)
 {
-       parameterlist params;
+       if ((!IS_LOCAL(source)) && (source != ServerInstance->FakeClient))
+               return;
+
+       CmdBuilder params(source, "KICK");
        params.push_back(memb->chan->name);
        params.push_back(memb->user->uuid);
-       params.push_back(":"+reason);
-       if (IS_LOCAL(source))
-       {
-               Utils->DoOneToMany(source->uuid,"KICK",params);
-       }
-       else if (source == ServerInstance->FakeClient)
-       {
-               Utils->DoOneToMany(ServerInstance->Config->GetSID(),"KICK",params);
-       }
-}
-
-void ModuleSpanningTree::OnRemoteKill(User* source, User* dest, const std::string &reason, const std::string &operreason)
-{
-       if (!IS_LOCAL(source))
-               return; // Only start routing if we're origin.
-
-       ServerInstance->OperQuit.set(dest, operreason);
-       parameterlist params;
-       params.push_back(":"+operreason);
-       Utils->DoOneToMany(dest->uuid,"OPERQUIT",params);
-       params.clear();
-       params.push_back(dest->uuid);
-       params.push_back(":"+reason);
-       Utils->DoOneToMany(source->uuid,"KILL",params);
+       // If a remote user is being kicked by us then send the membership id in the kick too
+       if (!IS_LOCAL(memb->user))
+               params.push_int(memb->id);
+       params.push_last(reason);
+       params.Broadcast();
 }
 
 void ModuleSpanningTree::OnPreRehash(User* user, const std::string &parameter)
@@ -757,19 +573,29 @@ void ModuleSpanningTree::OnPreRehash(User* user, const std::string &parameter)
        if (loopCall)
                return; // Don't generate a REHASH here if we're in the middle of processing a message that generated this one
 
-       ServerInstance->Logs->Log("remoterehash", DEBUG, "called with param %s", parameter.c_str());
+       ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "OnPreRehash called with param %s", parameter.c_str());
 
        // Send out to other servers
        if (!parameter.empty() && parameter[0] != '-')
        {
-               parameterlist params;
+               CmdBuilder params((user ? user->uuid : ServerInstance->Config->GetSID()), "REHASH");
                params.push_back(parameter);
-               Utils->DoOneToAllButSender(user ? user->uuid : ServerInstance->Config->GetSID(), "REHASH", params, user ? user->server : ServerInstance->Config->ServerName);
+               params.Forward(user ? TreeServer::Get(user)->GetRoute() : NULL);
        }
 }
 
-void ModuleSpanningTree::OnRehash(User* user)
+void ModuleSpanningTree::ReadConfig(ConfigStatus& status)
 {
+       // Did this rehash change the description of this server?
+       const std::string& newdesc = ServerInstance->Config->ServerDesc;
+       if (newdesc != Utils->TreeRoot->GetDesc())
+       {
+               // Broadcast a SINFO desc message to let the network know about the new description. This is the description
+               // string that is sent in the SERVER message initially and shown for example in WHOIS.
+               // We don't need to update the field itself in the Server object - the core does that.
+               CommandSInfo::Builder(Utils->TreeRoot, "desc", newdesc).Broadcast();
+       }
+
        // Re-read config stuff
        try
        {
@@ -783,8 +609,8 @@ void ModuleSpanningTree::OnRehash(User* user)
                std::string msg = "Error in configuration: ";
                msg.append(e.GetReason());
                ServerInstance->SNO->WriteToSnoMask('l', msg);
-               if (user && !IS_LOCAL(user))
-                       ServerInstance->PI->SendSNONotice("L", msg);
+               if (status.srcuser && !IS_LOCAL(status.srcuser))
+                       ServerInstance->PI->SendSNONotice('L', msg);
        }
 }
 
@@ -799,24 +625,41 @@ void ModuleSpanningTree::OnLoadModule(Module* mod)
                data.push_back('=');
                data.append(v.link_data);
        }
-       ServerInstance->PI->SendMetaData(NULL, "modules", data);
+       ServerInstance->PI->SendMetaData("modules", data);
 }
 
 void ModuleSpanningTree::OnUnloadModule(Module* mod)
 {
-       ServerInstance->PI->SendMetaData(NULL, "modules", "-" + mod->ModuleSourceFile);
+       if (!Utils)
+               return;
+       ServerInstance->PI->SendMetaData("modules", "-" + mod->ModuleSourceFile);
+
+       if (mod == this)
+       {
+               // We are being unloaded, inform modules about all servers splitting which cannot be done later when the servers are actually disconnected
+               const server_hash& servers = Utils->serverlist;
+               for (server_hash::const_iterator i = servers.begin(); i != servers.end(); ++i)
+               {
+                       TreeServer* server = i->second;
+                       if (!server->IsRoot())
+                               FOREACH_MOD_CUSTOM(GetEventProvider(), SpanningTreeEventListener, OnServerSplit, (server));
+               }
+               return;
+       }
+
+       // Some other module is being unloaded. If it provides an IOHook we use, we must close that server connection now.
 
 restart:
-       unsigned int items = Utils->TreeRoot->ChildCount();
-       for(unsigned int x = 0; x < items; x++)
+       // Close all connections which use an IO hook provided by this module
+       const TreeServer::ChildServers& list = Utils->TreeRoot->GetChildren();
+       for (TreeServer::ChildServers::const_iterator i = list.begin(); i != list.end(); ++i)
        {
-               TreeServer* srv = Utils->TreeRoot->GetChild(x);
-               TreeSocket* sock = srv->GetSocket();
-               if (sock && sock->GetIOHook() == mod)
+               TreeSocket* sock = (*i)->GetSocket();
+               if (sock->GetModHook(mod))
                {
                        sock->SendError("SSL module unloaded");
                        sock->Close();
-                       // XXX: The list we're iterating is modified by TreeSocket::Squit() which is called by Close()
+                       // XXX: The list we're iterating is modified by TreeServer::SQuit() which is called by Close()
                        goto restart;
                }
        }
@@ -824,169 +667,96 @@ restart:
        for (SpanningTreeUtilities::TimeoutList::const_iterator i = Utils->timeoutlist.begin(); i != Utils->timeoutlist.end(); ++i)
        {
                TreeSocket* sock = i->first;
-               if (sock->GetIOHook() == mod)
+               if (sock->GetModHook(mod))
                        sock->Close();
        }
 }
 
-// note: the protocol does not allow direct umode +o except
-// via NICK with 8 params. sending OPERTYPE infers +o modechange
-// locally.
 void ModuleSpanningTree::OnOper(User* user, const std::string &opertype)
 {
        if (user->registered != REG_ALL || !IS_LOCAL(user))
                return;
-       parameterlist params;
-       params.push_back(opertype);
-       Utils->DoOneToMany(user->uuid,"OPERTYPE",params);
+
+       // Note: The protocol does not allow direct umode +o;
+       // sending OPERTYPE infers +o modechange locally.
+       CommandOpertype::Builder(user).Broadcast();
 }
 
 void ModuleSpanningTree::OnAddLine(User* user, XLine *x)
 {
-       if (!x->IsBurstable() || loopCall)
+       if (!x->IsBurstable() || loopCall || (user && !IS_LOCAL(user)))
                return;
 
-       parameterlist params;
-       params.push_back(x->type);
-       params.push_back(x->Displayable());
-       params.push_back(ServerInstance->Config->ServerName);
-       params.push_back(ConvToStr(x->set_time));
-       params.push_back(ConvToStr(x->duration));
-       params.push_back(":" + x->reason);
-
        if (!user)
-       {
-               /* Server-set lines */
-               Utils->DoOneToMany(ServerInstance->Config->GetSID(), "ADDLINE", params);
-       }
-       else if (IS_LOCAL(user))
-       {
-               /* User-set lines */
-               Utils->DoOneToMany(user->uuid, "ADDLINE", params);
-       }
+               user = ServerInstance->FakeClient;
+
+       CommandAddLine::Builder(x, user).Broadcast();
 }
 
 void ModuleSpanningTree::OnDelLine(User* user, XLine *x)
 {
-       if (!x->IsBurstable() || loopCall)
+       if (!x->IsBurstable() || loopCall || (user && !IS_LOCAL(user)))
                return;
 
-       parameterlist params;
-       params.push_back(x->type);
-       params.push_back(x->Displayable());
-
        if (!user)
-       {
-               /* Server-unset lines */
-               Utils->DoOneToMany(ServerInstance->Config->GetSID(), "DELLINE", params);
-       }
-       else if (IS_LOCAL(user))
-       {
-               /* User-unset lines */
-               Utils->DoOneToMany(user->uuid, "DELLINE", params);
-       }
-}
-
-void ModuleSpanningTree::OnMode(User* user, void* dest, int target_type, const parameterlist &text, const std::vector<TranslateType> &translate)
-{
-       if ((IS_LOCAL(user)) && (user->registered == REG_ALL))
-       {
-               parameterlist params;
-               std::string output_text;
-
-               ServerInstance->Parser->TranslateUIDs(translate, text, output_text);
+               user = ServerInstance->FakeClient;
 
-               if (target_type == TYPE_USER)
-               {
-                       User* u = (User*)dest;
-                       params.push_back(u->uuid);
-                       params.push_back(output_text);
-                       Utils->DoOneToMany(user->uuid, "MODE", params);
-               }
-               else
-               {
-                       Channel* c = (Channel*)dest;
-                       params.push_back(c->name);
-                       params.push_back(ConvToStr(c->age));
-                       params.push_back(output_text);
-                       Utils->DoOneToMany(user->uuid, "FMODE", params);
-               }
-       }
+       CmdBuilder params(user, "DELLINE");
+       params.push_back(x->type);
+       params.push_back(x->Displayable());
+       params.Broadcast();
 }
 
 ModResult ModuleSpanningTree::OnSetAway(User* user, const std::string &awaymsg)
 {
        if (IS_LOCAL(user))
-       {
-               parameterlist params;
-               if (!awaymsg.empty())
-               {
-                       params.push_back(ConvToStr(ServerInstance->Time()));
-                       params.push_back(":" + awaymsg);
-               }
-               Utils->DoOneToMany(user->uuid, "AWAY", params);
-       }
+               CommandAway::Builder(user, awaymsg).Broadcast();
 
        return MOD_RES_PASSTHRU;
 }
 
-void ModuleSpanningTree::OnRequest(Request& request)
-{
-       if (!strcmp(request.id, "rehash"))
-               Utils->Rehash();
-}
-
-void ModuleSpanningTree::ProtoSendMode(void* opaque, TargetTypeFlags target_type, void* target, const parameterlist &modeline, const std::vector<TranslateType> &translate)
+void ModuleSpanningTree::OnMode(User* source, User* u, Channel* c, const Modes::ChangeList& modes, ModeParser::ModeProcessFlag processflags, const std::string& output_mode)
 {
-       TreeSocket* s = (TreeSocket*)opaque;
-       std::string output_text;
+       if (processflags & ModeParser::MODE_LOCALONLY)
+               return;
 
-       ServerInstance->Parser->TranslateUIDs(translate, modeline, output_text);
+       if (u)
+       {
+               if (u->registered != REG_ALL)
+                       return;
 
-       if (target)
+               CmdBuilder params(source, "MODE");
+               params.push(u->uuid);
+               params.push(output_mode);
+               params.push_raw(Translate::ModeChangeListToParams(modes.getlist()));
+               params.Broadcast();
+       }
+       else
        {
-               if (target_type == TYPE_USER)
-               {
-                       User* u = (User*)target;
-                       s->WriteLine(":"+ServerInstance->Config->GetSID()+" MODE "+u->uuid+" "+output_text);
-               }
-               else if (target_type == TYPE_CHANNEL)
-               {
-                       Channel* c = (Channel*)target;
-                       s->WriteLine(":"+ServerInstance->Config->GetSID()+" FMODE "+c->name+" "+ConvToStr(c->age)+" "+output_text);
-               }
+               CmdBuilder params(source, "FMODE");
+               params.push(c->name);
+               params.push_int(c->age);
+               params.push(output_mode);
+               params.push_raw(Translate::ModeChangeListToParams(modes.getlist()));
+               params.Broadcast();
        }
 }
 
-void ModuleSpanningTree::ProtoSendMetaData(void* opaque, Extensible* target, const std::string &extname, const std::string &extdata)
-{
-       TreeSocket* s = static_cast<TreeSocket*>(opaque);
-       User* u = dynamic_cast<User*>(target);
-       Channel* c = dynamic_cast<Channel*>(target);
-       if (u)
-               s->WriteLine(":"+ServerInstance->Config->GetSID()+" METADATA "+u->uuid+" "+extname+" :"+extdata);
-       else if (c)
-               s->WriteLine(":"+ServerInstance->Config->GetSID()+" METADATA "+c->name+" "+extname+" :"+extdata);
-       else if (!target)
-               s->WriteLine(":"+ServerInstance->Config->GetSID()+" METADATA * "+extname+" :"+extdata);
-}
-
 CullResult ModuleSpanningTree::cull()
 {
-       Utils->cull();
-       ServerInstance->Timers->DelTimer(RefreshTimer);
+       if (Utils)
+               Utils->cull();
        return this->Module::cull();
 }
 
 ModuleSpanningTree::~ModuleSpanningTree()
 {
-       delete ServerInstance->PI;
-       ServerInstance->PI = new ProtocolInterface;
+       ServerInstance->PI = &ServerInstance->DefaultProtocolInterface;
 
-       /* This will also free the listeners */
-       delete Utils;
+       Server* newsrv = new Server(ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc);
+       SetLocalUsersServer(newsrv);
 
-       delete commands;
+       delete Utils;
 }
 
 Version ModuleSpanningTree::GetVersion()
@@ -998,12 +768,13 @@ Version ModuleSpanningTree::GetVersion()
  * so that any activity it sees is FINAL, e.g. we arent going to send out
  * a NICK message before m_cloaking has finished putting the +x on the user,
  * etc etc.
- * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
+ * Therefore, we set our priority to PRIORITY_LAST to make sure we end up at the END of
  * the module call queue.
  */
 void ModuleSpanningTree::Prioritize()
 {
        ServerInstance->Modules->SetPriority(this, PRIORITY_LAST);
+       ServerInstance->Modules.SetPriority(this, I_OnPreTopicChange, PRIORITY_FIRST);
 }
 
 MODULE_INIT(ModuleSpanningTree)