]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/m_spanningtree.cpp
Updated copyrights in headers etc using perl inplace edit
[user/henk/code/inspircd.git] / src / modules / m_spanningtree.cpp
index e067bcdfd91a986a74314adaaf4ca56c28753277..b0530442b4e90cf08483ab5d0baa5ed93da7f913 100644 (file)
@@ -2,7 +2,7 @@
  *       | Inspire Internet Relay Chat Daemon |
  *       +------------------------------------+
  *
- *  Inspire is copyright (C) 2002-2005 ChatSpike-Dev.
+ *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
  *                       E-mail:
  *                <brain@chatspike.net>
  *               <Craig@chatspike.net>
@@ -39,6 +39,9 @@ using namespace std;
 #include "hashcomp.h"
 #include "message.h"
 #include "xline.h"
+#include "typedefs.h"
+#include "cull_list.h"
+#include "aes.h"
 
 #ifdef GCC3
 #define nspace __gnu_cxx
@@ -70,6 +73,8 @@ using namespace std;
 class ModuleSpanningTree;
 static ModuleSpanningTree* TreeProtocolModule;
 
+extern ServerConfig* Config;
+
 extern std::vector<Module*> modules;
 extern std::vector<ircd_module*> factory;
 extern int MODCOUNT;
@@ -92,8 +97,6 @@ extern int MODCOUNT;
 enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED };
 
 /* We need to import these from the core for use in netbursts */
-typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, irc::StrHashComp> user_hash;
-typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, irc::StrHashComp> chan_hash;
 extern user_hash clientlist;
 extern chan_hash chanlist;
 
@@ -106,6 +109,8 @@ class TreeSocket;
  */
 TreeServer *TreeRoot;
 
+Server* Srv;
+
 /* This hash_map holds the hash equivalent of the server
  * tree, used for rapid linear lookups.
  */
@@ -125,7 +130,11 @@ extern std::vector<GLine> glines;
 extern std::vector<ZLine> zlines;
 extern std::vector<QLine> qlines;
 extern std::vector<ELine> elines;
-
+extern std::vector<KLine> pklines;
+extern std::vector<GLine> pglines;
+extern std::vector<ZLine> pzlines;
+extern std::vector<QLine> pqlines;
+extern std::vector<ELine> pelines;
 
 /* Each server in the tree is represented by one class of
  * type TreeServer. A locally connected TreeServer can
@@ -168,7 +177,7 @@ class TreeServer
                ServerDesc = "";
                VersionString = "";
                UserCount = OperCount = 0;
-               VersionString = GetVersionString();
+               VersionString = Srv->GetVersion();
        }
 
        /* We use this constructor only to create the 'root' item, TreeRoot, which
@@ -180,8 +189,9 @@ class TreeServer
                Parent = NULL;
                VersionString = "";
                UserCount = OperCount = 0;
-               VersionString = GetVersionString();
+               VersionString = Srv->GetVersion();
                Route = NULL;
+               Socket = NULL; /* Fix by brain */
                AddHashEntry();
        }
 
@@ -193,7 +203,7 @@ class TreeServer
        {
                VersionString = "";
                UserCount = OperCount = 0;
-               this->SetNextPingTime(time(NULL) + 60);
+               this->SetNextPingTime(time(NULL) + 120);
                this->SetPingFlag();
 
                /* find the 'route' for this server (e.g. the one directly connected
@@ -285,17 +295,17 @@ class TreeServer
 
        std::string GetName()
        {
-               return this->ServerName;
+               return ServerName;
        }
 
        std::string GetDesc()
        {
-               return this->ServerDesc;
+               return ServerDesc;
        }
 
        std::string GetVersion()
        {
-               return this->VersionString;
+               return VersionString;
        }
 
        void SetNextPingTime(time_t t)
@@ -306,7 +316,7 @@ class TreeServer
 
        time_t NextPingTime()
        {
-               return this->NextPing;
+               return NextPing;
        }
 
        bool AnsweredLastPing()
@@ -321,22 +331,32 @@ class TreeServer
 
        int GetUserCount()
        {
-               return this->UserCount;
+               return UserCount;
+       }
+
+       void AddUserCount()
+       {
+               UserCount++;
+       }
+
+       void DelUserCount()
+       {
+               UserCount--;
        }
 
        int GetOperCount()
        {
-               return this->OperCount;
+               return OperCount;
        }
 
        TreeSocket* GetSocket()
        {
-               return this->Socket;
+               return Socket;
        }
 
        TreeServer* GetParent()
        {
-               return this->Parent;
+               return Parent;
        }
 
        void SetVersion(std::string Version)
@@ -431,6 +451,7 @@ class Link
         std::string RecvPass;
         unsigned long AutoConnect;
         time_t NextConnectTime;
+        std::string EncryptionKey;
 };
 
 /* The usual stuff for inspircd modules,
@@ -438,7 +459,6 @@ class Link
  * use to store the <link> tags from the config
  * file.
  */
-Server *Srv;
 ConfigReader *Conf;
 std::vector<Link> LinkBlocks;
 
@@ -529,6 +549,9 @@ class TreeSocket : public InspSocket
        time_t NextPing;
        bool LastPingWasGood;
        bool bursting;
+       AES* ctx_in;
+       AES* ctx_out;
+       unsigned int keylength;
        
  public:
 
@@ -542,6 +565,8 @@ class TreeSocket : public InspSocket
        {
                myhost = host;
                this->LinkState = LISTENER;
+               this->ctx_in = NULL;
+               this->ctx_out = NULL;
        }
 
        TreeSocket(std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName)
@@ -549,6 +574,8 @@ class TreeSocket : public InspSocket
        {
                myhost = ServerName;
                this->LinkState = CONNECTING;
+               this->ctx_in = NULL;
+               this->ctx_out = NULL;
        }
 
        /* When a listening socket gives us a new file descriptor,
@@ -559,6 +586,42 @@ class TreeSocket : public InspSocket
                : InspSocket(newfd, ip)
        {
                this->LinkState = WAIT_AUTH_1;
+               this->ctx_in = NULL;
+               this->ctx_out = NULL;
+               this->SendCapabilities();
+       }
+
+       ~TreeSocket()
+       {
+               if (ctx_in)
+                       delete ctx_in;
+               if (ctx_out)
+                       delete ctx_out;
+       }
+
+       void InitAES(std::string key,std::string SName)
+       {
+               if (key == "")
+                       return;
+
+               ctx_in = new AES();
+               ctx_out = new AES();
+               log(DEBUG,"Initialized AES key %s",key.c_str());
+               // key must be 16, 24, 32 etc bytes (multiple of 8)
+               keylength = key.length();
+               if (!(keylength == 16 || keylength == 24 || keylength == 32))
+               {
+                       WriteOpers("*** \2ERROR\2: Key length for encryptionkey is not 16, 24 or 32 bytes in length!");
+                       log(DEBUG,"Key length not 16, 24 or 32 characters!");
+               }
+               else
+               {
+                       WriteOpers("*** \2AES\2: Initialized %d bit encryption to server %s",keylength*8,SName.c_str());
+                       ctx_in->MakeKey(key.c_str(), "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
+                               \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", keylength, keylength);
+                       ctx_out->MakeKey(key.c_str(), "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
+                               \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", keylength, keylength);
+               }
        }
        
        /* When an outbound connection finishes connecting, we receive
@@ -577,6 +640,19 @@ class TreeSocket : public InspSocket
                        {
                                if (x->Name == this->myhost)
                                {
+                                       this->SendCapabilities();
+                                       if (x->EncryptionKey != "")
+                                       {
+                                               if (!(x->EncryptionKey.length() == 16 || x->EncryptionKey.length() == 24 || x->EncryptionKey.length() == 32))
+                                               {
+                                                       WriteOpers("\2WARNING\2: Your encryption key is NOT 16, 24 or 32 characters in length, encryption will \2NOT\2 be enabled.");
+                                               }
+                                               else
+                                               {
+                                                       this->WriteLine("AES "+Srv->GetServerName());
+                                                       this->InitAES(x->EncryptionKey,x->Name);
+                                               }
+                                       }
                                        /* found who we're supposed to be connecting to, send the neccessary gubbins. */
                                        this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
                                        return true;
@@ -633,13 +709,63 @@ class TreeSocket : public InspSocket
                }
        }
 
+       std::string MyCapabilities()
+       {
+               ServerConfig* Config = Srv->GetConfig();
+               std::vector<std::string> modlist;
+               std::string capabilities = "";
+
+                for (int i = 0; i <= MODCOUNT; i++)
+                {
+                       if ((modules[i]->GetVersion().Flags & VF_STATIC) || (modules[i]->GetVersion().Flags & VF_COMMON))
+                               modlist.push_back(Config->module_names[i]);
+                }
+               sort(modlist.begin(),modlist.end());
+               for (unsigned int i = 0; i < modlist.size(); i++)
+               {
+                       if (i)
+                               capabilities = capabilities + ",";
+                       capabilities = capabilities + modlist[i];
+               }
+               return capabilities;
+       }
+       
+       void SendCapabilities()
+       {
+               this->WriteLine("CAPAB "+MyCapabilities());
+       }
+
+       bool Capab(std::deque<std::string> params)
+       {
+               if (params.size() != 1)
+               {
+                       this->WriteLine("ERROR :Invalid number of parameters for CAPAB");
+                       return false;
+               }
+               if (params[0] != this->MyCapabilities())
+               {
+                       std::string quitserver = this->myhost;
+                       if (this->InboundServerName != "")
+                       {
+                               quitserver = this->InboundServerName;
+                       }
+                       WriteOpers("*** \2ERROR\2: Server '%s' does not have the same set of modules loaded, cannot link!",quitserver.c_str());
+                       WriteOpers("*** Our networked module set is: '%s'",this->MyCapabilities().c_str());
+                       WriteOpers("*** Other server's networked module set is: '%s'",params[0].c_str());
+                       WriteOpers("*** These lists must match exactly on both servers. Please correct these errors, and try again.");
+                       this->WriteLine("ERROR :CAPAB mismatch; My capabilities: '"+this->MyCapabilities()+"'");
+                       return false;
+               }
+               return true;
+       }
+
        /* This function forces this server to quit, removing this server
         * and any users on it (and servers and users below that, etc etc).
         * It's very slow and pretty clunky, but luckily unless your network
         * is having a REAL bad hair day, this function shouldnt be called
         * too many times a month ;-)
         */
-       void SquitServer(TreeServer* Current)
+       void SquitServer(TreeServer* Current, CullList* Goners)
        {
                /* recursively squit the servers attached to 'Current'.
                 * We're going backwards so we don't remove users
@@ -648,29 +774,17 @@ class TreeSocket : public InspSocket
                for (unsigned int q = 0; q < Current->ChildCount(); q++)
                {
                        TreeServer* recursive_server = Current->GetChild(q);
-                       this->SquitServer(recursive_server);
+                       this->SquitServer(recursive_server,Goners);
                }
                /* Now we've whacked the kids, whack self */
                num_lost_servers++;
-               bool quittingpeople = true;
-               while (quittingpeople)
-               {
-                       /* Yup i know, "ew". We cant continue to loop through the
-                        * iterator if we modify it, so whenever we modify it with a
-                        * QUIT we have to start alllll over again. If anyone knows
-                        * a better faster way of *safely* doing this, please let me
-                        * know!
-                        */
-                       quittingpeople = false;
-                       for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
+               for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
+               {
+                       if (!strcasecmp(u->second->server,Current->GetName().c_str()))
                        {
-                               if (!strcasecmp(u->second->server,Current->GetName().c_str()))
-                               {
-                                       Srv->QuitUser(u->second,Current->GetName()+" "+std::string(Srv->GetServerName()));
-                                       num_lost_users++;
-                                       quittingpeople = true;
-                                       break;
-                               }
+                               std::string qreason = Current->GetName()+" "+std::string(Srv->GetServerName());
+                               Goners->AddItem(u->second,qreason);
+                               num_lost_users++;
                        }
                }
        }
@@ -681,7 +795,7 @@ class TreeSocket : public InspSocket
         */
        void Squit(TreeServer* Current,std::string reason)
        {
-               if (Current)
+               if ((Current) && (Current != TreeRoot))
                {
                        std::deque<std::string> params;
                        params.push_back(Current->GetName());
@@ -697,10 +811,13 @@ class TreeSocket : public InspSocket
                        }
                        num_lost_servers = 0;
                        num_lost_users = 0;
-                       SquitServer(Current);
+                       CullList* Goners = new CullList();
+                       SquitServer(Current, Goners);
+                       Goners->Apply();
                        Current->Tidy();
                        Current->GetParent()->DelChild(Current);
                        delete Current;
+                       delete Goners;
                        WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
                }
                else
@@ -810,56 +927,61 @@ class TreeSocket : public InspSocket
                {
                        /* process one channel at a time, applying modes. */
                        char* usr = (char*)params[usernum].c_str();
-                       char permissions = *usr;
-                       switch (permissions)
+                       /* Safety check just to make sure someones not sent us an FJOIN full of spaces
+                        * (is this even possible?) */
+                       if (usr && *usr)
                        {
-                               case '@':
-                                       usr++;
-                                       mode_users[modectr++] = usr;
-                                       strlcat(modestring,"o",MAXBUF);
-                               break;
-                               case '%':
-                                       usr++;
-                                       mode_users[modectr++] = usr;
-                                       strlcat(modestring,"h",MAXBUF);
-                               break;
-                               case '+':
-                                       usr++;
-                                       mode_users[modectr++] = usr;
-                                       strlcat(modestring,"v",MAXBUF);
-                               break;
-                       }
-                       who = Srv->FindNick(usr);
-                       if (who)
-                       {
-                               Srv->JoinUserToChannel(who,channel,key);
-                               if (modectr >= (MAXMODES-1))
+                               char permissions = *usr;
+                               switch (permissions)
                                {
-                                       /* theres a mode for this user. push them onto the mode queue, and flush it
-                                        * if there are more than MAXMODES to go.
-                                        */
-                                       if ((ourTS >= TS) || (Srv->IsUlined(who->server)))
-                                       {
-                                               /* We also always let u-lined clients win, no matter what the TS value */
-                                               log(DEBUG,"Our our channel newer than theirs, accepting their modes");
-                                               Srv->SendMode(mode_users,modectr,who);
-                                       }
-                                       else
+                                       case '@':
+                                               usr++;
+                                               mode_users[modectr++] = usr;
+                                               strlcat(modestring,"o",MAXBUF);
+                                       break;
+                                       case '%':
+                                               usr++;
+                                               mode_users[modectr++] = usr;
+                                               strlcat(modestring,"h",MAXBUF);
+                                       break;
+                                       case '+':
+                                               usr++;
+                                               mode_users[modectr++] = usr;
+                                               strlcat(modestring,"v",MAXBUF);
+                                       break;
+                               }
+                               who = Srv->FindNick(usr);
+                               if (who)
+                               {
+                                       Srv->JoinUserToChannel(who,channel,key);
+                                       if (modectr >= (MAXMODES-1))
                                        {
-                                               log(DEBUG,"Their channel newer than ours, bouncing their modes");
-                                               /* bouncy bouncy! */
-                                               std::deque<std::string> params;
-                                               /* modes are now being UNSET... */
-                                               *mode_users[1] = '-';
-                                               for (unsigned int x = 0; x < modectr; x++)
+                                               /* theres a mode for this user. push them onto the mode queue, and flush it
+                                                * if there are more than MAXMODES to go.
+                                                */
+                                               if ((ourTS >= TS) || (Srv->IsUlined(who->server)))
+                                               {
+                                                       /* We also always let u-lined clients win, no matter what the TS value */
+                                                       log(DEBUG,"Our our channel newer than theirs, accepting their modes");
+                                                       Srv->SendMode(mode_users,modectr,who);
+                                               }
+                                               else
                                                {
-                                                       params.push_back(mode_users[x]);
+                                                       log(DEBUG,"Their channel newer than ours, bouncing their modes");
+                                                       /* bouncy bouncy! */
+                                                       std::deque<std::string> params;
+                                                       /* modes are now being UNSET... */
+                                                       *mode_users[1] = '-';
+                                                       for (unsigned int x = 0; x < modectr; x++)
+                                                       {
+                                                               params.push_back(mode_users[x]);
+                                                       }
+                                                       // tell everyone to bounce the modes. bad modes, bad!
+                                                       DoOneToMany(Srv->GetServerName(),"FMODE",params);
                                                }
-                                               // tell everyone to bounce the modes. bad modes, bad!
-                                               DoOneToMany(Srv->GetServerName(),"FMODE",params);
+                                               strcpy(mode_users[1],"+");
+                                               modectr = 2;
                                        }
-                                       strcpy(mode_users[1],"+");
-                                       modectr = 2;
                                }
                        }
                }
@@ -934,17 +1056,26 @@ class TreeSocket : public InspSocket
                clientlist[tempnick]->signon = age;
                strlcpy(clientlist[tempnick]->modes, modes.c_str(),53);
                strlcpy(clientlist[tempnick]->ip,ip.c_str(),16);
+
+               ucrec a;
+               a.channel = NULL;
+               a.uc_modes = 0;
                for (int i = 0; i < MAXCHANS; i++)
-               {
-                       clientlist[tempnick]->chans[i].channel = NULL;
-                       clientlist[tempnick]->chans[i].uc_modes = 0;
-               }
+                       clientlist[tempnick]->chans.push_back(a);
+
                if (!this->bursting)
                {
                        WriteOpers("*** Client connecting at %s: %s!%s@%s [%s]",clientlist[tempnick]->server,clientlist[tempnick]->nick,clientlist[tempnick]->ident,clientlist[tempnick]->host,clientlist[tempnick]->ip);
                }
                params[7] = ":" + params[7];
                DoOneToAllButSender(source,"NICK",params,source);
+
+               // Increment the Source Servers User Count..
+               TreeServer* SourceServer = FindServer(source);
+               if (SourceServer) {
+                       SourceServer->AddUserCount();
+               }
+
                return true;
        }
 
@@ -954,24 +1085,27 @@ class TreeSocket : public InspSocket
         */
        void SendFJoins(TreeServer* Current, chanrec* c)
        {
+               log(DEBUG,"Sending FJOINs to other server for %s",c->name);
                char list[MAXBUF];
                snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
-               std::vector<char*> *ulist = c->GetUsers();
-               for (unsigned int i = 0; i < ulist->size(); i++)
+               std::map<char*,char*> *ulist = c->GetUsers();
+               for (std::map<char*,char*>::iterator i = ulist->begin(); i != ulist->end(); i++)
                {
-                       char* o = (*ulist)[i];
+                       char* o = i->second;
                        userrec* otheruser = (userrec*)o;
                        strlcat(list," ",MAXBUF);
                        strlcat(list,cmode(otheruser,c),MAXBUF);
                        strlcat(list,otheruser->nick,MAXBUF);
                        if (strlen(list)>(480-NICKMAX))
                        {
+                               log(DEBUG,"FJOIN line wrapped");
                                this->WriteLine(list);
                                snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
                        }
                }
                if (list[strlen(list)-1] != ':')
                {
+                       log(DEBUG,"Final FJOIN line");
                        this->WriteLine(list);
                }
        }
@@ -1001,6 +1135,26 @@ class TreeSocket : public InspSocket
                        snprintf(data,MAXBUF,":%s ADDLINE E %s %s %lu %lu :%s",Srv->GetServerName().c_str(),i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
                        this->WriteLine(data);
                }
+               for (std::vector<ZLine>::iterator i = pzlines.begin(); i != pzlines.end(); i++)
+               {
+                       snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s",Srv->GetServerName().c_str(),i->ipaddr,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
+                       this->WriteLine(data);
+               }
+               for (std::vector<QLine>::iterator i = pqlines.begin(); i != pqlines.end(); i++)
+               {
+                       snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s",Srv->GetServerName().c_str(),i->nick,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
+                       this->WriteLine(data);
+               }
+               for (std::vector<GLine>::iterator i = pglines.begin(); i != pglines.end(); i++)
+               {
+                       snprintf(data,MAXBUF,":%s ADDLINE G %s %s %lu %lu :%s",Srv->GetServerName().c_str(),i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
+                       this->WriteLine(data);
+               }
+               for (std::vector<ELine>::iterator i = pelines.begin(); i != pelines.end(); i++)
+               {
+                       snprintf(data,MAXBUF,":%s ADDLINE E %s %s %lu %lu :%s",Srv->GetServerName().c_str(),i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
+                       this->WriteLine(data);
+               }
        }
 
        /* Send channel modes and topics */
@@ -1023,12 +1177,12 @@ class TreeSocket : public InspSocket
                                snprintf(data,MAXBUF,":%s FMODE %s +b %s",Srv->GetServerName().c_str(),c->second->name,b->data);
                                this->WriteLine(data);
                        }
-                       FOREACH_MOD OnSyncChannel(c->second,(Module*)TreeProtocolModule,(void*)this);
+                       FOREACH_MOD(I_OnSyncChannel,OnSyncChannel(c->second,(Module*)TreeProtocolModule,(void*)this));
                        list.clear();
                        c->second->GetExtList(list);
                        for (unsigned int j = 0; j < list.size(); j++)
                        {
-                               FOREACH_MOD OnSyncChannelMetaData(c->second,(Module*)TreeProtocolModule,(void*)this,list[j]);
+                               FOREACH_MOD(I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
                        }
                }
        }
@@ -1048,12 +1202,12 @@ class TreeSocket : public InspSocket
                                {
                                        this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
                                }
-                               FOREACH_MOD OnSyncUser(u->second,(Module*)TreeProtocolModule,(void*)this);
+                               FOREACH_MOD(I_OnSyncUser,OnSyncUser(u->second,(Module*)TreeProtocolModule,(void*)this));
                                list.clear();
                                u->second->GetExtList(list);
                                for (unsigned int j = 0; j < list.size(); j++)
                                {
-                                       FOREACH_MOD OnSyncUserMetaData(u->second,(Module*)TreeProtocolModule,(void*)this,list[j]);
+                                       FOREACH_MOD(I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
                                }
                        }
                }
@@ -1069,7 +1223,7 @@ class TreeSocket : public InspSocket
                Srv->SendOpers("*** Bursting to \2"+s->GetName()+"\2.");
                this->WriteLine("BURST");
                /* send our version string */
-               this->WriteLine(":"+Srv->GetServerName()+" VERSION :"+GetVersionString());
+               this->WriteLine(":"+Srv->GetServerName()+" VERSION :"+Srv->GetVersion());
                /* Send server tree */
                this->SendServers(TreeRoot,s,1);
                /* Send users and their oper status */
@@ -1092,7 +1246,8 @@ class TreeSocket : public InspSocket
         virtual bool OnDataReady()
        {
                char* data = this->Read();
-               if (data)
+               /* Check that the data read is a valid pointer and it has some content */
+               if (data && *data)
                {
                        this->in_buffer += data;
                        /* While there is at least one new line in the buffer,
@@ -1104,7 +1259,8 @@ class TreeSocket : public InspSocket
                                std::string ret = "";
                                while ((*line != '\n') && (strlen(line)))
                                {
-                                       ret = ret + *line;
+                                       if ((*line != '\r') && (*line != '\n'))
+                                               ret = ret + *line;
                                        line++;
                                }
                                if ((*line == '\n') || (*line == '\r'))
@@ -1113,17 +1269,64 @@ class TreeSocket : public InspSocket
                                /* Process this one, abort if it
                                 * didnt return true.
                                 */
+                               if (this->ctx_in)
+                               {
+                                       char out[1024];
+                                       char result[1024];
+                                       memset(result,0,1024);
+                                       memset(out,0,1024);
+                                       log(DEBUG,"Original string '%s'",ret.c_str());
+                                       /* ERROR + CAPAB is still allowed unencryped */
+                                       if ((ret.substr(0,7) != "ERROR :") && (ret.substr(0,6) != "CAPAB "))
+                                       {
+                                               int nbytes = from64tobits(out, ret.c_str(), 1024);
+                                               if ((nbytes > 0) && (nbytes < 1024))
+                                               {
+                                                       log(DEBUG,"m_spanningtree: decrypt %d bytes",nbytes);
+                                                       ctx_in->Decrypt(out, result, nbytes, 1);
+                                                       for (int t = 0; t < nbytes; t++)
+                                                               if (result[t] == '\7') result[t] = 0;
+                                                       ret = result;
+                                               }
+                                       }
+                               }
                                if (!this->ProcessLine(ret))
                                {
                                        return false;
                                }
                        }
                }
+               /* EAGAIN returns an empty but non-NULL string, so this
+                * evaluates to TRUE for EAGAIN but to FALSE for EOF.
+                */
                return (data != NULL);
        }
 
        int WriteLine(std::string line)
        {
+               log(DEBUG,"OUT: %s",line.c_str());
+               if (this->ctx_out)
+               {
+                       log(DEBUG,"AES context");
+                       char result[10240];
+                       char result64[10240];
+                       if (this->keylength)
+                       {
+                               while (line.length() % this->keylength != 0)
+                               {
+                                       // pad it to be a multiple of the key length
+                                       line = line + "\7";
+                               }
+                       }
+                       unsigned int ll = line.length();
+                       log(DEBUG,"Plaintext line with padding = %d chars",ll);
+                       ctx_out->Encrypt(line.c_str(), result, ll, 1);
+                       log(DEBUG,"Encrypted.");
+                       to64frombits((unsigned char*)result64,(unsigned char*)result,ll);
+                       line = result64;
+                       log(DEBUG,"Encrypted: %s",line.c_str());
+                       //int from64tobits(char *out, const char *in, int maxlen);
+               }
                return this->Write(line + "\r\n");
        }
 
@@ -1261,7 +1464,7 @@ class TreeSocket : public InspSocket
                                chanrec* c = Srv->FindChannel(params[0]);
                                if (c)
                                {
-                                       FOREACH_MOD OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]);
+                                       FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
                                }
                        }
                        else
@@ -1269,7 +1472,7 @@ class TreeSocket : public InspSocket
                                userrec* u = Srv->FindNick(params[0]);
                                if (u)
                                {
-                                       FOREACH_MOD OnDecodeMetaData(TYPE_USER,u,params[1],params[2]);
+                                       FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
                                }
                        }
                }
@@ -1374,50 +1577,47 @@ class TreeSocket : public InspSocket
                        // an incoming request
                        if (params.size() == 1)
                        {
-                               if (std::string(u->server) != Srv->GetServerName())
+                               userrec* x = Srv->FindNick(params[0]);
+                               if ((x) && (x->fd > -1))
                                {
                                        userrec* x = Srv->FindNick(params[0]);
-                                       log(DEBUG,"Got IDLE, sending back IDLE");
+                                       log(DEBUG,"Got IDLE");
                                        char signon[MAXBUF];
                                        char idle[MAXBUF];
-                                       if ((x) && (std::string(x->server) == Srv->GetServerName()))
-                                       {
-                                               snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon);
-                                               snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-time(NULL)));
-                                               std::deque<std::string> par;
-                                               par.push_back(prefix);
-                                               par.push_back(signon);
-                                               par.push_back(idle);
-                                               DoOneToOne(params[0],"IDLE",par,u->server);
-                                       }
-                                       else
-                                       {
-                                               // not for us, pass it on
-                                               DoOneToOne(prefix,"IDLE",params,u->server);
-                                       }
+                                       log(DEBUG,"Sending back IDLE 3");
+                                       snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon);
+                                       snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-time(NULL)));
+                                       std::deque<std::string> par;
+                                       par.push_back(prefix);
+                                       par.push_back(signon);
+                                       par.push_back(idle);
+                                       // ours, we're done, pass it BACK
+                                       DoOneToOne(params[0],"IDLE",par,u->server);
                                }
                                else
                                {
-                                       DoOneToOne(prefix,"IDLE",params,u->server);
+                                       // not ours pass it on
+                                       DoOneToOne(prefix,"IDLE",params,x->server);
                                }
                        }
                        else if (params.size() == 3)
                        {
-                               if (std::string(u->server) != Srv->GetServerName())
+                               std::string who_did_the_whois = params[0];
+                               userrec* who_to_send_to = Srv->FindNick(who_did_the_whois);
+                               if ((who_to_send_to) && (who_to_send_to->fd > -1))
                                {
                                        log(DEBUG,"Got final IDLE");
                                        // an incoming reply to a whois we sent out
                                        std::string nick_whoised = prefix;
-                                       std::string who_did_the_whois = params[0];
                                        unsigned long signon = atoi(params[1].c_str());
                                        unsigned long idle = atoi(params[2].c_str());
-                                       userrec* who_to_send_to = Srv->FindNick(who_did_the_whois);
-                                       if ((who_to_send_to) && (std::string(who_to_send_to->server) == Srv->GetServerName()))
+                                       if ((who_to_send_to) && (who_to_send_to->fd > -1))
                                                do_whois(who_to_send_to,u,signon,idle,(char*)nick_whoised.c_str());
                                }
                                else
                                {
-                                       DoOneToOne(prefix,"IDLE",params,u->server);
+                                       // not ours, pass it on
+                                       DoOneToOne(prefix,"IDLE",params,who_to_send_to->server);
                                }
                        }
                }
@@ -1451,6 +1651,7 @@ class TreeSocket : public InspSocket
                if (CheckDupe)
                {
                        this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
+                       Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
                        return false;
                }
                TreeServer* Node = new TreeServer(servername,description,ParentOfThis,NULL);
@@ -1471,6 +1672,7 @@ class TreeSocket : public InspSocket
                if (hops)
                {
                        this->WriteLine("ERROR :Server too far away for authentication");
+                       Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, server is too far away for authentication");
                        return false;
                }
                std::string description = params[3];
@@ -1482,6 +1684,7 @@ class TreeSocket : public InspSocket
                                if (CheckDupe)
                                {
                                        this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
+                                       Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
                                        return false;
                                }
                                // Begin the sync here. this kickstarts the
@@ -1502,6 +1705,7 @@ class TreeSocket : public InspSocket
                        }
                }
                this->WriteLine("ERROR :Invalid credentials");
+               Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, invalid link credentials");
                return false;
        }
 
@@ -1515,6 +1719,7 @@ class TreeSocket : public InspSocket
                if (hops)
                {
                        this->WriteLine("ERROR :Server too far away for authentication");
+                       Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, server is too far away for authentication");
                        return false;
                }
                std::string description = params[3];
@@ -1526,6 +1731,17 @@ class TreeSocket : public InspSocket
                                if (CheckDupe)
                                {
                                        this->WriteLine("ERROR :Server "+servername+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
+                                       Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
+                                       return false;
+                               }
+                               /* If the config says this link is encrypted, but the remote side
+                                * hasnt bothered to send the AES command before SERVER, then we
+                                * boot them off as we MUST have this connection encrypted.
+                                */
+                               if ((x->EncryptionKey != "") && (!this->ctx_in))
+                               {
+                                       this->WriteLine("ERROR :This link requires AES encryption to be enabled. Plaintext connection refused.");
+                                       Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, remote server did not enable AES.");
                                        return false;
                                }
                                Srv->SendOpers("*** Verified incoming server connection from \002"+servername+"\002["+this->GetIP()+"] ("+description+")");
@@ -1540,6 +1756,7 @@ class TreeSocket : public InspSocket
                        }
                }
                this->WriteLine("ERROR :Invalid credentials");
+               Srv->SendOpers("*** Server connection from \2"+servername+"\2 denied, invalid link credentials");
                return false;
        }
 
@@ -1601,7 +1818,8 @@ class TreeSocket : public InspSocket
                line = l;
                if (line == "")
                        return true;
-               Srv->Log(DEBUG,"IN: '"+line+"'");
+               Srv->Log(DEBUG,"IN: "+line);
+               
                std::deque<std::string> params;
                this->Split(line,true,params);
                std::string command = "";
@@ -1621,7 +1839,24 @@ class TreeSocket : public InspSocket
                        command = params[0];
                        params.pop_front();
                }
-               
+
+               if ((!this->ctx_in) && (command == "AES"))
+               {
+                        std::string sserv = params[0];
+                        for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
+                        {
+                                if ((x->EncryptionKey != "") && (x->Name == sserv))
+                                {
+                                        this->InitAES(x->EncryptionKey,sserv);
+                                }
+                        }
+                        return true;
+               }
+               else if ((this->ctx_in) && (command == "AES"))
+               {
+                       WriteOpers("*** \2AES\2: Encryption already enabled on this connection yet %s is trying to enable it twice!",params[0].c_str());
+               }
+
                switch (this->LinkState)
                {
                        TreeServer* Node;
@@ -1632,7 +1867,11 @@ class TreeSocket : public InspSocket
                                // replies with theirs if its happy, then if the initiator is happy,
                                // it starts to send its net sync, which starts the merge, otherwise
                                // it sends an ERROR.
-                               if (command == "SERVER")
+                               if (command == "PASS")
+                               {
+                                       /* Silently ignored */
+                               }
+                               else if (command == "SERVER")
                                {
                                        return this->Inbound_Server(params);
                                }
@@ -1640,6 +1879,25 @@ class TreeSocket : public InspSocket
                                {
                                        return this->Error(params);
                                }
+                               else if (command == "USER")
+                               {
+                                       this->WriteLine("ERROR :Client connections to this port are prohibited.");
+                                       return false;
+                               }
+                               else if (command == "CAPAB")
+                               {
+                                       return this->Capab(params);
+                               }
+                               else if ((command == "U") || (command == "S"))
+                               {
+                                       this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
+                                       return false;
+                               }
+                               else
+                               {
+                                       this->WriteLine("ERROR :Invalid command in negotiation phase.");
+                                       return false;
+                               }
                        break;
                        case WAIT_AUTH_2:
                                // Waiting for start of other side's netmerge to say they liked our
@@ -1650,6 +1908,11 @@ class TreeSocket : public InspSocket
                                        // silently ignore.
                                        return true;
                                }
+                               else if ((command == "U") || (command == "S"))
+                               {
+                                       this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
+                                       return false;
+                               }
                                else if (command == "BURST")
                                {
                                        this->LinkState = CONNECTED;
@@ -1668,6 +1931,10 @@ class TreeSocket : public InspSocket
                                {
                                        return this->Error(params);
                                }
+                               else if (command == "CAPAB")
+                               {
+                                       return this->Capab(params);
+                               }
                                
                        break;
                        case LISTENER:
@@ -1705,9 +1972,17 @@ class TreeSocket : public InspSocket
                                        TreeServer* route_back_again = BestRouteTo(direction);
                                        if ((!route_back_again) || (route_back_again->GetSocket() != this))
                                        {
-                                               WriteOpers("*** \2WARNING\2! Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
+                                               if (route_back_again)
+                                                       log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
                                                return true;
                                        }
+
+                                       /* Fix by brain:
+                                        * When there is activity on the socket, reset the ping counter so
+                                        * that we're not wasting bandwidth pinging an active server.
+                                        */                     
+                                       route_back_again->SetNextPingTime(time(NULL) + 120);
+                                       route_back_again->SetPingFlag();
                                }
                                
                                if (command == "SVSMODE")
@@ -1896,6 +2171,7 @@ class TreeSocket : public InspSocket
                {
                        Squit(s,"Remote host closed the connection");
                }
+               WriteOpers("Server '\2%s\2[%s]' closed the connection.",quitserver.c_str(),this->GetIP().c_str());
        }
 
        virtual int OnIncomingConnection(int newsock, char* ip)
@@ -1921,13 +2197,12 @@ void AddThisServer(TreeServer* server, std::deque<TreeServer*> &list)
 // returns a list of DIRECT servernames for a specific channel
 void GetListOfServersForChannel(chanrec* c, std::deque<TreeServer*> &list)
 {
-       std::vector<char*> *ulist = c->GetUsers();
-       unsigned int ucount = ulist->size();
-       for (unsigned int i = 0; i < ucount; i++)
+       std::map<char*,char*> *ulist = c->GetUsers();
+       for (std::map<char*,char*>::iterator i = ulist->begin(); i != ulist->end(); i++)
        {
-               char* o = (*ulist)[i];
+               char* o = i->second;
                userrec* otheruser = (userrec*)o;
-               if (std::string(otheruser->server) != Srv->GetServerName())
+               if (otheruser->fd < 0)
                {
                        TreeServer* best = BestRouteTo(otheruser->server);
                        if (best)
@@ -2108,9 +2383,33 @@ void ReadConfiguration(bool rebind)
                L.SendPass = Conf->ReadValue("link","sendpass",j);
                L.RecvPass = Conf->ReadValue("link","recvpass",j);
                L.AutoConnect = Conf->ReadInteger("link","autoconnect",j,true);
+               L.EncryptionKey =  Conf->ReadValue("link","encryptionkey",j);
                L.NextConnectTime = time(NULL) + L.AutoConnect;
-               LinkBlocks.push_back(L);
-               log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
+               /* Bugfix by brain, do not allow people to enter bad configurations */
+               if ((L.RecvPass != "") && (L.SendPass != "") && (L.Name != "") && (L.Port))
+               {
+                       LinkBlocks.push_back(L);
+                       log(DEBUG,"m_spanningtree: Read server %s with host %s:%d",L.Name.c_str(),L.IPAddr.c_str(),L.Port);
+               }
+               else
+               {
+                       if (L.RecvPass == "")
+                       {
+                               log(DEFAULT,"Invalid configuration for server '%s', recvpass not defined!",L.Name.c_str());
+                       }
+                       else if (L.SendPass == "")
+                       {
+                               log(DEFAULT,"Invalid configuration for server '%s', sendpass not defined!",L.Name.c_str());
+                       }
+                       else if (L.Name == "")
+                       {
+                               log(DEFAULT,"Invalid configuration, link tag without a name!");
+                       }
+                       else if (!L.Port)
+                       {
+                               log(DEFAULT,"Invalid configuration for server '%s', no port specified!",L.Name.c_str());
+                       }
+               }
        }
        delete Conf;
 }
@@ -2187,7 +2486,32 @@ class ModuleSpanningTree : public Module
                        {
                                matrix[line][t] = ' ';
                        }
-                       strlcpy(&matrix[line][depth],Current->GetName().c_str(),80);
+
+                       // For Aligning, we need to work out exactly how deep this thing is, and produce
+                       // a 'Spacer' String to compensate.
+                       char spacer[40];
+
+                       memset(spacer,' ',40);
+                       if ((40 - Current->GetName().length() - depth) > 1) {
+                               spacer[40 - Current->GetName().length() - depth] = '\0';
+                       }
+                       else
+                       {
+                               spacer[5] = '\0';
+                       }
+
+                       float percent;
+                       char text[80];
+                       if (clientlist.size() == 0) {
+                               // If there are no users, WHO THE HELL DID THE /MAP?!?!?!
+                               percent = 0;
+                       }
+                       else
+                       {
+                               percent = ((float)Current->GetUserCount() / (float)clientlist.size()) * 100;
+                       }
+                       snprintf(text, 80, "%s %s%5d [%5.2f%%]", Current->GetName().c_str(), spacer, Current->GetUserCount(), percent);
+                       strlcpy(&matrix[line][depth],text,80);
                        line++;
                        for (unsigned int q = 0; q < Current->ChildCount(); q++)
                        {
@@ -2262,12 +2586,18 @@ class ModuleSpanningTree : public Module
                TreeServer* s = FindServerMask(parameters[0]);
                if (s)
                {
+                       if (s == TreeRoot)
+                       {
+                                WriteServ(user->fd,"NOTICE %s :*** SQUIT: Foolish mortal, you cannot make a server SQUIT itself! (%s matches local server name)",user->nick,parameters[0]);
+                               return 1;
+                       }
                        TreeSocket* sock = s->GetSocket();
                        if (sock)
                        {
+                               log(DEBUG,"Splitting server %s",s->GetName().c_str());
                                WriteOpers("*** SQUIT: Server \002%s\002 removed from network by %s",parameters[0],user->nick);
                                sock->Squit(s,"Server quit by "+std::string(user->nick)+"!"+std::string(user->ident)+"@"+std::string(user->host));
-                               sock->Close();
+                               Srv->RemoveSocket(sock);
                        }
                        else
                        {
@@ -2283,10 +2613,10 @@ class ModuleSpanningTree : public Module
 
        int HandleRemoteWhois(char** parameters, int pcnt, userrec* user)
        {
-               if ((std::string(user->server) == Srv->GetServerName()) && (pcnt > 1))
+               if ((user->fd > -1) && (pcnt > 1))
                {
                        userrec* remote = Srv->FindNick(parameters[1]);
-                       if ((remote) && (std::string(remote->server) != Srv->GetServerName()))
+                       if ((remote) && (remote->fd < 0))
                        {
                                std::deque<std::string> params;
                                params.push_back(parameters[1]);
@@ -2311,22 +2641,23 @@ class ModuleSpanningTree : public Module
                        TreeSocket* sock = serv->GetSocket();
                        if (sock)
                        {
-                               if (curtime >= serv->NextPingTime())
-                               {
-                                       if (serv->AnsweredLastPing())
-                                       {
-                                               sock->WriteLine(":"+Srv->GetServerName()+" PING "+serv->GetName());
-                                               serv->SetNextPingTime(curtime + 60);
-                                       }
-                                       else
-                                       {
-                                               // they didnt answer, boot them
-                                               WriteOpers("*** Server \002%s\002 pinged out",serv->GetName().c_str());
-                                               sock->Squit(serv,"Ping timeout");
-                                               sock->Close();
-                                               return;
-                                       }
-                               }
+                                if (curtime >= serv->NextPingTime())
+                                {               
+                                        if (serv->AnsweredLastPing())
+                                        {               
+                                                sock->WriteLine(":"+Srv->GetServerName()+" PING "+serv->GetName());
+                                                serv->SetNextPingTime(curtime + 120);
+                                        }                       
+                                        else            
+                                        {       
+                                                // they didnt answer, boot them
+                                                WriteOpers("*** Server \002%s\002 pinged out",serv->GetName().c_str());
+                                                sock->Squit(serv,"Ping timeout");
+                                               Srv->RemoveSocket(sock);
+                                                return;
+                                        }
+                                }
+
                        }
                }
        }
@@ -2359,6 +2690,25 @@ class ModuleSpanningTree : public Module
                {
                        std::string Version = found->GetVersion();
                        WriteServ(user->fd,"351 %s :%s",user->nick,Version.c_str());
+                       if (found == TreeRoot)
+                       {
+                               std::stringstream out(Config->data005);
+                               std::string token = "";
+                               std::string line5 = "";
+                               int token_counter = 0;
+                               while (!out.eof())
+                               {
+                                       out >> token;
+                                       line5 = line5 + token + " ";   
+                                       token_counter++;
+                                       if ((token_counter >= 13) || (out.eof() == true))
+                                       {
+                                               WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
+                                               line5 = "";
+                                               token_counter = 0;
+                                       }
+                               }
+                       }
                }
                else
                {
@@ -2392,24 +2742,28 @@ class ModuleSpanningTree : public Module
                return 1;
        }
 
-       virtual bool HandleStats(char ** parameters, int pcnt, userrec* user)
+       virtual int OnStats(char statschar, userrec* user)
        {
-               if (*parameters[0] == 'c')
+               if (statschar == 'c')
                {
                        for (unsigned int i = 0; i < LinkBlocks.size(); i++)
                        {
-                               WriteServ(user->fd,"213 %s C *@%s * %s %d 0 M",user->nick,LinkBlocks[i].IPAddr.c_str(),LinkBlocks[i].Name.c_str(),LinkBlocks[i].Port);
+                               WriteServ(user->fd,"213 %s C *@%s * %s %d 0 %c%c%c",user->nick,LinkBlocks[i].IPAddr.c_str(),LinkBlocks[i].Name.c_str(),LinkBlocks[i].Port,(LinkBlocks[i].EncryptionKey != "" ? 'e' : '-'),(LinkBlocks[i].AutoConnect ? 'a' : '-'),'s');
                                WriteServ(user->fd,"244 %s H * * %s",user->nick,LinkBlocks[i].Name.c_str());
                        }
-                       WriteServ(user->fd,"219 %s %s :End of /STATS report",user->nick,parameters[0]);
-                       WriteOpers("*** Notice: Stats '%s' requested by %s (%s@%s)",parameters[0],user->nick,user->ident,user->host);
-                       return true;
+                       WriteServ(user->fd,"219 %s %c :End of /STATS report",user->nick,statschar);
+                       WriteOpers("*** Notice: Stats '%c' requested by %s (%s@%s)",statschar,user->nick,user->ident,user->host);
+                       return 1;
                }
-               return false;
+               return 0;
        }
 
-       virtual int OnPreCommand(std::string command, char **parameters, int pcnt, userrec *user)
+       virtual int OnPreCommand(std::string command, char **parameters, int pcnt, userrec *user, bool validated)
        {
+               /* If the command doesnt appear to be valid, we dont want to mess with it. */
+               if (!validated)
+                       return 0;
+
                if (command == "CONNECT")
                {
                        return this->HandleConnect(parameters,pcnt,user);
@@ -2418,10 +2772,6 @@ class ModuleSpanningTree : public Module
                {
                        return this->HandleSquit(parameters,pcnt,user);
                }
-               else if (command == "STATS")
-               {
-                       return this->HandleStats(parameters,pcnt,user);
-               }
                else if (command == "MAP")
                {
                        this->HandleMap(parameters,pcnt,user);
@@ -2486,7 +2836,7 @@ class ModuleSpanningTree : public Module
 
        virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
        {
-               if (std::string(source->server) == Srv->GetServerName())
+               if (source->fd > -1)
                {
                        std::deque<std::string> params;
                        params.push_back(dest->nick);
@@ -2505,7 +2855,7 @@ class ModuleSpanningTree : public Module
 
        virtual void OnWallops(userrec* user, std::string text)
        {
-               if (std::string(user->server) == Srv->GetServerName())
+               if (user->fd > -1)
                {
                        std::deque<std::string> params;
                        params.push_back(":"+text);
@@ -2518,7 +2868,7 @@ class ModuleSpanningTree : public Module
                if (target_type == TYPE_USER)
                {
                        userrec* d = (userrec*)dest;
-                       if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
+                       if ((d->fd < 0) && (user->fd > -1))
                        {
                                std::deque<std::string> params;
                                params.clear();
@@ -2529,7 +2879,7 @@ class ModuleSpanningTree : public Module
                }
                else
                {
-                       if (std::string(user->server) == Srv->GetServerName())
+                       if (user->fd > -1)
                        {
                                chanrec *c = (chanrec*)dest;
                                std::deque<TreeServer*> list;
@@ -2552,7 +2902,7 @@ class ModuleSpanningTree : public Module
                        // route private messages which are targetted at clients only to the server
                        // which needs to receive them
                        userrec* d = (userrec*)dest;
-                       if ((std::string(d->server) != Srv->GetServerName()) && (std::string(user->server) == Srv->GetServerName()))
+                       if ((d->fd < 0) && (user->fd > -1))
                        {
                                std::deque<std::string> params;
                                params.clear();
@@ -2563,7 +2913,7 @@ class ModuleSpanningTree : public Module
                }
                else
                {
-                       if (std::string(user->server) == Srv->GetServerName())
+                       if (user->fd > -1)
                        {
                                chanrec *c = (chanrec*)dest;
                                std::deque<TreeServer*> list;
@@ -2588,7 +2938,7 @@ class ModuleSpanningTree : public Module
        virtual void OnUserJoin(userrec* user, chanrec* channel)
        {
                // Only do this for local users
-               if (std::string(user->server) == Srv->GetServerName())
+               if (user->fd > -1)
                {
                        std::deque<std::string> params;
                        params.clear();
@@ -2640,7 +2990,7 @@ class ModuleSpanningTree : public Module
 
        virtual void OnUserPart(userrec* user, chanrec* channel)
        {
-               if (std::string(user->server) == Srv->GetServerName())
+               if (user->fd > -1)
                {
                        std::deque<std::string> params;
                        params.push_back(channel->name);
@@ -2651,7 +3001,7 @@ class ModuleSpanningTree : public Module
        virtual void OnUserConnect(userrec* user)
        {
                char agestr[MAXBUF];
-               if (std::string(user->server) == Srv->GetServerName())
+               if (user->fd > -1)
                {
                        std::deque<std::string> params;
                        snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
@@ -2664,22 +3014,35 @@ class ModuleSpanningTree : public Module
                        params.push_back(user->ip);
                        params.push_back(":"+std::string(user->fullname));
                        DoOneToMany(Srv->GetServerName(),"NICK",params);
+
+                       // User is Local, change needs to be reflected!
+                       TreeServer* SourceServer = FindServer(user->server);
+                       if (SourceServer) {
+                               SourceServer->AddUserCount();
+                       }
+
                }
        }
 
        virtual void OnUserQuit(userrec* user, std::string reason)
        {
-               if ((std::string(user->server) == Srv->GetServerName()) && (user->registered == 7))
+               if ((user->fd > -1) && (user->registered == 7))
                {
                        std::deque<std::string> params;
                        params.push_back(":"+reason);
                        DoOneToMany(user->nick,"QUIT",params);
                }
+               // Regardless, We need to modify the user Counts..
+               TreeServer* SourceServer = FindServer(user->server);
+               if (SourceServer) {
+                       SourceServer->DelUserCount();
+               }
+
        }
 
        virtual void OnUserPostNick(userrec* user, std::string oldnick)
        {
-               if (std::string(user->server) == Srv->GetServerName())
+               if (user->fd > -1)
                {
                        std::deque<std::string> params;
                        params.push_back(user->nick);
@@ -2689,7 +3052,7 @@ class ModuleSpanningTree : public Module
 
        virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, std::string reason)
        {
-               if (std::string(source->server) == Srv->GetServerName())
+               if (source->fd > -1)
                {
                        std::deque<std::string> params;
                        params.push_back(chan->name);
@@ -2729,7 +3092,7 @@ class ModuleSpanningTree : public Module
        // locally.
        virtual void OnOper(userrec* user, std::string opertype)
        {
-               if (std::string(user->server) == Srv->GetServerName())
+               if (user->fd > -1)
                {
                        std::deque<std::string> params;
                        params.push_back(opertype);
@@ -2739,7 +3102,7 @@ class ModuleSpanningTree : public Module
 
        void OnLine(userrec* source, std::string host, bool adding, char linetype, long duration, std::string reason)
        {
-               if (std::string(source->server) == Srv->GetServerName())
+               if (source->fd > -1)
                {
                        char type[8];
                        snprintf(type,8,"%cLINE",linetype);
@@ -2805,7 +3168,7 @@ class ModuleSpanningTree : public Module
 
        virtual void OnMode(userrec* user, void* dest, int target_type, std::string text)
        {
-               if ((std::string(user->server) == Srv->GetServerName()) && (user->registered == 7))
+               if ((user->fd > -1) && (user->registered == 7))
                {
                        if (target_type == TYPE_USER)
                        {
@@ -2870,6 +3233,29 @@ class ModuleSpanningTree : public Module
        {
                return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
        }
+
+       void Implements(char* List)
+       {
+               List[I_OnPreCommand] = List[I_OnGetServerDescription] = List[I_OnUserInvite] = List[I_OnPostLocalTopicChange] = 1;
+               List[I_OnWallops] = List[I_OnUserNotice] = List[I_OnUserMessage] = List[I_OnBackgroundTimer] = 1;
+               List[I_OnUserJoin] = List[I_OnChangeHost] = List[I_OnChangeName] = List[I_OnUserPart] = List[I_OnUserConnect] = 1;
+               List[I_OnUserQuit] = List[I_OnUserPostNick] = List[I_OnUserKick] = List[I_OnRemoteKill] = List[I_OnRehash] = 1;
+               List[I_OnOper] = List[I_OnAddGLine] = List[I_OnAddZLine] = List[I_OnAddQLine] = List[I_OnAddELine] = 1;
+               List[I_OnDelGLine] = List[I_OnDelZLine] = List[I_OnDelQLine] = List[I_OnDelELine] = List[I_ProtoSendMode] = List[I_OnMode] = 1;
+               List[I_OnStats] = List[I_ProtoSendMetaData] = 1;
+       }
+
+       /* It is IMPORTANT that m_spanningtree is the last module in the chain
+        * 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
+        * the module call queue.
+        */
+       Priority Prioritize()
+       {
+               return PRIORITY_LAST;
+       }
 };