- fork off spanningtree module for UUID stuffs :o

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@3843 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 3907 insertions, 0 deletions

diff --git a/src/modules/m_spanningtree_ng.cpp b/src/modules/m_spanningtree_ng.cpp
new file mode 100644
index 000000000..0005f0683
--- /dev/null
+++ b/src/modules/m_spanningtree_ng.cpp
@@ -0,0 +1,3907 @@
+/*   +------------------------------------+
+ *   | Inspire Internet Relay Chat Daemon |
+ *   +------------------------------------+
+ *
+ *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
+ *                     E-mail:
+ *                <brain@chatspike.net>
+ *           	  <Craig@chatspike.net>
+ *     
+ * Written by Craig Edwards, Craig McLure, and others.
+ * This program is free but copyrighted software; see
+ *            the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+/* $ModDesc: Povides a spanning tree server link protocol */
+
+using namespace std;
+
+#include <stdio.h>
+#include <vector>
+#include <deque>
+#include "globals.h"
+#include "inspircd_config.h"
+#ifdef GCC3
+#include <ext/hash_map>
+#else
+#include <hash_map>
+#endif
+#include "users.h"
+#include "channels.h"
+#include "modules.h"
+#include "commands.h"
+#include "cmd_whois.h"
+#include "socket.h"
+#include "helperfuncs.h"
+#include "inspircd.h"
+#include "inspstring.h"
+#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
+#else
+#define nspace std
+#endif
+
+/*
+ * The server list in InspIRCd is maintained as two structures
+ * which hold the data in different ways. Most of the time, we
+ * want to very quicky obtain three pieces of information:
+ *
+ * (1) The information on a server
+ * (2) The information on the server we must send data through
+ *     to actually REACH the server we're after
+ * (3) Potentially, the child/parent objects of this server
+ *
+ * The InspIRCd spanning protocol provides easy access to these
+ * by storing the data firstly in a recursive structure, where
+ * each item references its parent item, and a dynamic list
+ * of child items, and another structure which stores the items
+ * hashed, linearly. This means that if we want to find a server
+ * by name quickly, we can look it up in the hash, avoiding
+ * any O(n) lookups. If however, during a split or sync, we want
+ * to apply an operation to a server, and any of its child objects
+ * we can resort to recursion to walk the tree structure.
+ */
+
+class ModuleSpanningTree;
+static ModuleSpanningTree* TreeProtocolModule;
+
+extern ServerConfig* Config;
+extern InspIRCd* ServerInstance;
+extern std::vector<Module*> modules;
+extern std::vector<ircd_module*> factory;
+extern int MODCOUNT;
+
+/* Any socket can have one of five states at any one time.
+ * The LISTENER state indicates a socket which is listening
+ * for connections. It cannot receive data itself, only incoming
+ * sockets.
+ * The CONNECTING state indicates an outbound socket which is
+ * waiting to be writeable.
+ * The WAIT_AUTH_1 state indicates the socket is outbound and
+ * has successfully connected, but has not yet sent and received
+ * SERVER strings.
+ * The WAIT_AUTH_2 state indicates that the socket is inbound
+ * (allocated by a LISTENER) but has not yet sent and received
+ * SERVER strings.
+ * The CONNECTED state represents a fully authorized, fully
+ * connected server.
+ */
+enum ServerState { LISTENER, CONNECTING, WAIT_AUTH_1, WAIT_AUTH_2, CONNECTED };
+
+/* We need to import these from the core for use in netbursts */
+extern user_hash clientlist;
+extern chan_hash chanlist;
+
+/* Foward declarations */
+class TreeServer;
+class TreeSocket;
+
+/* This variable represents the root of the server tree
+ * (for all intents and purposes, it's us)
+ */
+TreeServer *TreeRoot;
+
+static Server* Srv;
+
+/* This hash_map holds the hash equivalent of the server
+ * tree, used for rapid linear lookups.
+ */
+typedef nspace::hash_map<std::string, TreeServer*, nspace::hash<string>, irc::StrHashComp> server_hash;
+server_hash serverlist;
+
+/* More forward declarations */
+bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> &params, std::string target);
+bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> &params, std::string omit);
+bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> &params);
+bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, irc::string command, std::deque<std::string> &params);
+void ReadConfiguration(bool rebind);
+
+/* Flatten links and /MAP for non-opers */
+bool FlatLinks;
+/* Hide U-Lined servers in /MAP and /LINKS */
+bool HideULines;
+
+/* Imported from xline.cpp for use during netburst */
+extern std::vector<KLine> klines;
+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
+ * have a class of type TreeSocket associated with it, for
+ * remote servers, the TreeSocket entry will be NULL.
+ * Each server also maintains a pointer to its parent
+ * (NULL if this server is ours, at the top of the tree)
+ * and a pointer to its "Route" (see the comments in the
+ * constructors below), and also a dynamic list of pointers
+ * to its children which can be iterated recursively
+ * if required. Creating or deleting objects of type
+ i* TreeServer automatically maintains the hash_map of
+ * TreeServer items, deleting and inserting them as they
+ * are created and destroyed.
+ */
+
+class TreeServer
+{
+	TreeServer* Parent;			/* Parent entry */
+	TreeServer* Route;			/* Route entry */
+	std::vector<TreeServer*> Children;	/* List of child objects */
+	irc::string ServerName;			/* Server's name */
+	std::string ServerDesc;			/* Server's description */
+	std::string VersionString;		/* Version string or empty string */
+	int UserCount;				/* Not used in this version */
+	int OperCount;				/* Not used in this version */
+	TreeSocket* Socket;			/* For directly connected servers this points at the socket object */
+	time_t NextPing;			/* After this time, the server should be PINGed*/
+	bool LastPingWasGood;			/* True if the server responded to the last PING with a PONG */
+	std::map<userrec*,userrec*> Users;	/* Users on this server */
+	
+ public:
+
+	/* We don't use this constructor. Its a dummy, and won't cause any insertion
+	 * of the TreeServer into the hash_map. See below for the two we DO use.
+	 */
+	TreeServer()
+	{
+		Parent = NULL;
+		ServerName = "";
+		ServerDesc = "";
+		VersionString = "";
+		UserCount = OperCount = 0;
+		VersionString = Srv->GetVersion();
+	}
+
+	/* We use this constructor only to create the 'root' item, TreeRoot, which
+	 * represents our own server. Therefore, it has no route, no parent, and
+	 * no socket associated with it. Its version string is our own local version.
+	 */
+	TreeServer(std::string Name, std::string Desc) : ServerName(Name.c_str()), ServerDesc(Desc)
+	{
+		Parent = NULL;
+		VersionString = "";
+		UserCount = OperCount = 0;
+		VersionString = Srv->GetVersion();
+		Route = NULL;
+		Socket = NULL; /* Fix by brain */
+		AddHashEntry();
+	}
+
+	/* When we create a new server, we call this constructor to initialize it.
+	 * This constructor initializes the server's Route and Parent, and sets up
+	 * its ping counters so that it will be pinged one minute from now.
+	 */
+	TreeServer(std::string Name, std::string Desc, TreeServer* Above, TreeSocket* Sock) : Parent(Above), ServerName(Name.c_str()), ServerDesc(Desc), Socket(Sock)
+	{
+		VersionString = "";
+		UserCount = OperCount = 0;
+		this->SetNextPingTime(time(NULL) + 120);
+		this->SetPingFlag();
+
+		/* find the 'route' for this server (e.g. the one directly connected
+		 * to the local server, which we can use to reach it)
+		 *
+		 * In the following example, consider we have just added a TreeServer
+		 * class for server G on our network, of which we are server A.
+		 * To route traffic to G (marked with a *) we must send the data to
+		 * B (marked with a +) so this algorithm initializes the 'Route'
+		 * value to point at whichever server traffic must be routed through
+		 * to get here. If we were to try this algorithm with server B,
+		 * the Route pointer would point at its own object ('this').
+		 *
+		 *              A
+		 *             / \
+		 *          + B   C
+		 *           / \   \
+		 *          D   E   F
+		 *         /         \
+		 *      * G           H
+		 *
+		 * We only run this algorithm when a server is created, as
+		 * the routes remain constant while ever the server exists, and
+		 * do not need to be re-calculated.
+		 */
+
+		Route = Above;
+		if (Route == TreeRoot)
+		{
+			Route = this;
+		}
+		else
+		{
+			while (this->Route->GetParent() != TreeRoot)
+			{
+				this->Route = Route->GetParent();
+			}
+		}
+
+		/* Because recursive code is slow and takes a lot of resources,
+		 * we store two representations of the server tree. The first
+		 * is a recursive structure where each server references its
+		 * children and its parent, which is used for netbursts and
+		 * netsplits to dump the whole dataset to the other server,
+		 * and the second is used for very fast lookups when routing
+		 * messages and is instead a hash_map, where each item can
+		 * be referenced by its server name. The AddHashEntry()
+		 * call below automatically inserts each TreeServer class
+		 * into the hash_map as it is created. There is a similar
+		 * maintainance call in the destructor to tidy up deleted
+		 * servers.
+		 */
+
+		this->AddHashEntry();
+	}
+
+	void AddUser(userrec* user)
+	{
+		log(DEBUG,"Add user %s to server %s",user->nick,this->ServerName.c_str());
+		std::map<userrec*,userrec*>::iterator iter;
+		iter = Users.find(user);
+		if (iter == Users.end())
+			Users[user] = user;
+	}
+
+	void DelUser(userrec* user)
+	{
+		log(DEBUG,"Remove user %s from server %s",user->nick,this->ServerName.c_str());
+		std::map<userrec*,userrec*>::iterator iter;
+		iter = Users.find(user);
+		if (iter != Users.end())
+			Users.erase(iter);
+	}
+
+	int QuitUsers(const std::string &reason)
+	{
+		int x = Users.size();
+		log(DEBUG,"Removing all users from server %s",this->ServerName.c_str());
+		const char* reason_s = reason.c_str();
+		for (std::map<userrec*,userrec*>::iterator n = Users.begin(); n != Users.end(); n++)
+		{
+			log(DEBUG,"Kill %s",n->second->nick);
+			kill_link(n->second,reason_s);
+		}
+		Users.clear();
+		return x;
+	}
+
+	/* This method is used to add the structure to the
+	 * hash_map for linear searches. It is only called
+	 * by the constructors.
+	 */
+	void AddHashEntry()
+	{
+		server_hash::iterator iter;
+		iter = serverlist.find(this->ServerName.c_str());
+		if (iter == serverlist.end())
+			serverlist[this->ServerName.c_str()] = this;
+	}
+
+	/* This method removes the reference to this object
+	 * from the hash_map which is used for linear searches.
+	 * It is only called by the default destructor.
+	 */
+	void DelHashEntry()
+	{
+		server_hash::iterator iter;
+		iter = serverlist.find(this->ServerName.c_str());
+		if (iter != serverlist.end())
+			serverlist.erase(iter);
+	}
+
+	/* These accessors etc should be pretty self-
+	 * explanitory.
+	 */
+
+	TreeServer* GetRoute()
+	{
+		return Route;
+	}
+
+	std::string GetName()
+	{
+		return ServerName.c_str();
+	}
+
+	std::string GetDesc()
+	{
+		return ServerDesc;
+	}
+
+	std::string GetVersion()
+	{
+		return VersionString;
+	}
+
+	void SetNextPingTime(time_t t)
+	{
+		this->NextPing = t;
+		LastPingWasGood = false;
+	}
+
+	time_t NextPingTime()
+	{
+		return NextPing;
+	}
+
+	bool AnsweredLastPing()
+	{
+		return LastPingWasGood;
+	}
+
+	void SetPingFlag()
+	{
+		LastPingWasGood = true;
+	}
+
+	int GetUserCount()
+	{
+		return UserCount;
+	}
+
+	void AddUserCount()
+	{
+		UserCount++;
+	}
+
+	void DelUserCount()
+	{
+		UserCount--;
+	}
+
+	int GetOperCount()
+	{
+		return OperCount;
+	}
+
+	TreeSocket* GetSocket()
+	{
+		return Socket;
+	}
+
+	TreeServer* GetParent()
+	{
+		return Parent;
+	}
+
+	void SetVersion(std::string Version)
+	{
+		VersionString = Version;
+	}
+
+	unsigned int ChildCount()
+	{
+		return Children.size();
+	}
+
+	TreeServer* GetChild(unsigned int n)
+	{
+		if (n < Children.size())
+		{
+			/* Make sure they  cant request
+			 * an out-of-range object. After
+			 * all we know what these programmer
+			 * types are like *grin*.
+			 */
+			return Children[n];
+		}
+		else
+		{
+			return NULL;
+		}
+	}
+
+	void AddChild(TreeServer* Child)
+	{
+		Children.push_back(Child);
+	}
+
+	bool DelChild(TreeServer* Child)
+	{
+		for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
+		{
+			if (*a == Child)
+			{
+				Children.erase(a);
+				return true;
+			}
+		}
+		return false;
+	}
+
+	/* Removes child nodes of this node, and of that node, etc etc.
+	 * This is used during netsplits to automatically tidy up the
+	 * server tree. It is slow, we don't use it for much else.
+	 */
+	bool Tidy()
+	{
+		bool stillchildren = true;
+		while (stillchildren)
+		{
+			stillchildren = false;
+			for (std::vector<TreeServer*>::iterator a = Children.begin(); a < Children.end(); a++)
+			{
+				TreeServer* s = (TreeServer*)*a;
+				s->Tidy();
+				Children.erase(a);
+				delete s;
+				stillchildren = true;
+				break;
+			}
+		}
+		return true;
+	}
+
+	~TreeServer()
+	{
+		/* We'd better tidy up after ourselves, eh? */
+		this->DelHashEntry();
+	}
+};
+
+/* The Link class might as well be a struct,
+ * but this is C++ and we don't believe in structs (!).
+ * It holds the entire information of one <link>
+ * tag from the main config file. We maintain a list
+ * of them, and populate the list on rehash/load.
+ */
+
+class Link
+{
+ public:
+	 irc::string Name;
+	 std::string IPAddr;
+	 int Port;
+	 std::string SendPass;
+	 std::string RecvPass;
+	 unsigned long AutoConnect;
+	 time_t NextConnectTime;
+	 std::string EncryptionKey;
+	 bool HiddenFromStats;
+};
+
+/* The usual stuff for inspircd modules,
+ * plus the vector of Link classes which we
+ * use to store the <link> tags from the config
+ * file.
+ */
+ConfigReader *Conf;
+std::vector<Link> LinkBlocks;
+
+/* Yay for fast searches!
+ * This is hundreds of times faster than recursion
+ * or even scanning a linked list, especially when
+ * there are more than a few servers to deal with.
+ * (read as: lots).
+ */
+TreeServer* FindServer(std::string ServerName)
+{
+	server_hash::iterator iter;
+	iter = serverlist.find(ServerName.c_str());
+	if (iter != serverlist.end())
+	{
+		return iter->second;
+	}
+	else
+	{
+		return NULL;
+	}
+}
+
+/* Returns the locally connected server we must route a
+ * message through to reach server 'ServerName'. This
+ * only applies to one-to-one and not one-to-many routing.
+ * See the comments for the constructor of TreeServer
+ * for more details.
+ */
+TreeServer* BestRouteTo(std::string ServerName)
+{
+	if (ServerName.c_str() == TreeRoot->GetName())
+		return NULL;
+	TreeServer* Found = FindServer(ServerName);
+	if (Found)
+	{
+		return Found->GetRoute();
+	}
+	else
+	{
+		return NULL;
+	}
+}
+
+/* Find the first server matching a given glob mask.
+ * Theres no find-using-glob method of hash_map [awwww :-(]
+ * so instead, we iterate over the list using an iterator
+ * and match each one until we get a hit. Yes its slow,
+ * deal with it.
+ */
+TreeServer* FindServerMask(std::string ServerName)
+{
+	for (server_hash::iterator i = serverlist.begin(); i != serverlist.end(); i++)
+	{
+		if (Srv->MatchText(i->first.c_str(),ServerName))
+			return i->second;
+	}
+	return NULL;
+}
+
+/* A convenient wrapper that returns true if a server exists */
+bool IsServer(std::string ServerName)
+{
+	return (FindServer(ServerName) != NULL);
+}
+
+
+class cmd_rconnect : public command_t
+{
+	Module* Creator;
+ public:
+	cmd_rconnect (Module* Callback) : command_t("RCONNECT", 'o', 2), Creator(Callback)
+	{
+		this->source = "m_spanningtree.so";
+	}                
+
+	void Handle (char **parameters, int pcnt, userrec *user)
+	{
+		WriteServ(user->fd,"NOTICE %s :*** RCONNECT: Sending remote connect to \002%s\002 to connect server \002%s\002.",user->nick,parameters[0],parameters[1]);
+		/* Is this aimed at our server? */
+		if (Srv->MatchText(Srv->GetServerName(),parameters[0]))
+		{
+			/* Yes, initiate the given connect */
+			WriteOpers("*** Remote CONNECT from %s matching \002%s\002, connecting server \002%s\002",user->nick,parameters[0],parameters[1]);
+			char* para[1];
+			para[0] = parameters[1];
+			Creator->OnPreCommand("CONNECT", para, 1, user, true);
+		}
+	}
+};
+ 
+
+
+/* Every SERVER connection inbound or outbound is represented by
+ * an object of type TreeSocket.
+ * TreeSockets, being inherited from InspSocket, can be tied into
+ * the core socket engine, and we cn therefore receive activity events
+ * for them, just like activex objects on speed. (yes really, that
+ * is a technical term!) Each of these which relates to a locally
+ * connected server is assocated with it, by hooking it onto a
+ * TreeSocket class using its constructor. In this way, we can
+ * maintain a list of servers, some of which are directly connected,
+ * some of which are not.
+ */
+
+class TreeSocket : public InspSocket
+{
+	std::string myhost;
+	std::string in_buffer;
+	ServerState LinkState;
+	std::string InboundServerName;
+	std::string InboundDescription;
+	int num_lost_users;
+	int num_lost_servers;
+	time_t NextPing;
+	bool LastPingWasGood;
+	bool bursting;
+	AES* ctx_in;
+	AES* ctx_out;
+	unsigned int keylength;
+	
+ public:
+
+	/* Because most of the I/O gubbins are encapsulated within
+	 * InspSocket, we just call the superclass constructor for
+	 * most of the action, and append a few of our own values
+	 * to it.
+	 */
+	TreeSocket(std::string host, int port, bool listening, unsigned long maxtime)
+		: InspSocket(host, port, listening, maxtime)
+	{
+		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)
+		: InspSocket(host, port, listening, maxtime)
+	{
+		myhost = ServerName;
+		this->LinkState = CONNECTING;
+		this->ctx_in = NULL;
+		this->ctx_out = NULL;
+	}
+
+	/* When a listening socket gives us a new file descriptor,
+	 * we must associate it with a socket without creating a new
+	 * connection. This constructor is used for this purpose.
+	 */
+	TreeSocket(int newfd, char* ip)
+		: 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
+	 * this event, and must send our SERVER string to the other
+	 * side. If the other side is happy, as outlined in the server
+	 * to server docs on the inspircd.org site, the other side
+	 * will then send back its own server string.
+	 */
+	virtual bool OnConnected()
+	{
+		if (this->LinkState == CONNECTING)
+		{
+			/* we do not need to change state here. */
+			for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
+			{
+				if (x->Name == this->myhost)
+				{
+					Srv->SendOpers("*** Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] established.");
+					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.c_str());
+						}
+					}
+					/* 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;
+				}
+			}
+		}
+		/* There is a (remote) chance that between the /CONNECT and the connection
+		 * being accepted, some muppet has removed the <link> block and rehashed.
+		 * If that happens the connection hangs here until it's closed. Unlikely
+		 * and rather harmless.
+		 */
+		Srv->SendOpers("*** Connection to \2"+myhost+"\2 lost link tag(!)");
+		return true;
+	}
+	
+	virtual void OnError(InspSocketError e)
+	{
+		/* We don't handle this method, because all our
+		 * dirty work is done in OnClose() (see below)
+		 * which is still called on error conditions too.
+		 */
+		if (e == I_ERR_CONNECT)
+		{
+			Srv->SendOpers("*** Connection failed: Connection refused");
+		}
+	}
+
+	virtual int OnDisconnect()
+	{
+		/* For the same reason as above, we don't
+		 * handle OnDisconnect()
+		 */
+		return true;
+	}
+
+	/* Recursively send the server tree with distances as hops.
+	 * This is used during network burst to inform the other server
+	 * (and any of ITS servers too) of what servers we know about.
+	 * If at any point any of these servers already exist on the other
+	 * end, our connection may be terminated. The hopcounts given
+	 * by this function are relative, this doesn't matter so long as
+	 * they are all >1, as all the remote servers re-calculate them
+	 * to be relative too, with themselves as hop 0.
+	 */
+	void SendServers(TreeServer* Current, TreeServer* s, int hops)
+	{
+		char command[1024];
+		for (unsigned int q = 0; q < Current->ChildCount(); q++)
+		{
+			TreeServer* recursive_server = Current->GetChild(q);
+			if (recursive_server != s)
+			{
+				snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
+				this->WriteLine(command);
+				this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion());
+				/* down to next level */
+				this->SendServers(recursive_server, s, hops+1);
+			}
+		}
+	}
+
+	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(std::string &from, TreeServer* Current)
+	{
+		/* recursively squit the servers attached to 'Current'.
+		 * We're going backwards so we don't remove users
+		 * while we still need them ;)
+		 */
+		for (unsigned int q = 0; q < Current->ChildCount(); q++)
+		{
+			TreeServer* recursive_server = Current->GetChild(q);
+			this->SquitServer(from,recursive_server);
+		}
+		/* Now we've whacked the kids, whack self */
+		num_lost_servers++;
+		num_lost_users += Current->QuitUsers(from);
+		/*for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
+		{
+			if (!strcasecmp(u->second->server,Current->GetName().c_str()))
+			{
+				Goners->AddItem(u->second,from);
+				num_lost_users++;
+			}
+		}*/
+	}
+
+	/* This is a wrapper function for SquitServer above, which
+	 * does some validation first and passes on the SQUIT to all
+	 * other remaining servers.
+	 */
+	void Squit(TreeServer* Current,std::string reason)
+	{
+		if ((Current) && (Current != TreeRoot))
+		{
+			std::deque<std::string> params;
+			params.push_back(Current->GetName());
+			params.push_back(":"+reason);
+			DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
+			if (Current->GetParent() == TreeRoot)
+			{
+				Srv->SendOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
+			}
+			else
+			{
+				Srv->SendOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
+			}
+			num_lost_servers = 0;
+			num_lost_users = 0;
+			std::string from = Current->GetParent()->GetName()+" "+Current->GetName();
+			SquitServer(from, Current);
+			Current->Tidy();
+			Current->GetParent()->DelChild(Current);
+			delete Current;
+			WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
+		}
+		else
+		{
+			log(DEFAULT,"Squit from unknown server");
+		}
+	}
+
+	/* FMODE command */
+	bool ForceMode(std::string source, std::deque<std::string> &params)
+	{
+		if (params.size() < 2)
+			return true;
+		userrec* who = new userrec();
+		who->fd = FD_MAGIC_NUMBER;
+		char* modelist[64];
+		memset(&modelist,0,sizeof(modelist));
+		for (unsigned int q = 0; q < params.size(); q++)
+		{
+			modelist[q] = (char*)params[q].c_str();
+		}
+		Srv->SendMode(modelist,params.size(),who);
+		DoOneToAllButSender(source,"FMODE",params,source);
+		delete who;
+		return true;
+	}
+
+	/* FTOPIC command */
+	bool ForceTopic(std::string source, std::deque<std::string> &params)
+	{
+		if (params.size() != 4)
+			return true;
+		time_t ts = atoi(params[1].c_str());
+		std::string nsource = source;
+
+		chanrec* c = Srv->FindChannel(params[0]);
+		if (c)
+		{
+			if ((ts >= c->topicset) || (!*c->topic))
+			{
+				std::string oldtopic = c->topic;
+				strlcpy(c->topic,params[3].c_str(),MAXTOPIC);
+				strlcpy(c->setby,params[2].c_str(),NICKMAX-1);
+				c->topicset = ts;
+				/* if the topic text is the same as the current topic,
+				 * dont bother to send the TOPIC command out, just silently
+				 * update the set time and set nick.
+				 */
+				if (oldtopic != params[3])
+				{
+					userrec* user = Srv->FindNick(source);
+					if (!user)
+					{
+						WriteChannelWithServ((char*)source.c_str(), c, "TOPIC %s :%s", c->name, c->topic);
+					}
+					else
+					{
+						WriteChannel(c, user, "TOPIC %s :%s", c->name, c->topic);
+						nsource = user->server;
+					}
+					/* all done, send it on its way */
+					params[3] = ":" + params[3];
+					DoOneToAllButSender(source,"FTOPIC",params,nsource);
+				}
+			}
+			
+		}
+
+		return true;
+	}
+
+	/* FJOIN, similar to unreal SJOIN */
+	bool ForceJoin(std::string source, std::deque<std::string> &params)
+	{
+		if (params.size() < 3)
+			return true;
+
+		char first[MAXBUF];
+		char modestring[MAXBUF];
+		char* mode_users[127];
+		memset(&mode_users,0,sizeof(mode_users));
+		mode_users[0] = first;
+		mode_users[1] = modestring;
+		strcpy(mode_users[1],"+");
+		unsigned int modectr = 2;
+		
+		userrec* who = NULL;
+		std::string channel = params[0];
+		time_t TS = atoi(params[1].c_str());
+		char* key = "";
+		
+		chanrec* chan = Srv->FindChannel(channel);
+		if (chan)
+		{
+			key = chan->key;
+		}
+		strlcpy(mode_users[0],channel.c_str(),MAXBUF);
+
+		/* default is a high value, which if we dont have this
+		 * channel will let the other side apply their modes.
+		 */
+		time_t ourTS = time(NULL)+600;
+		chanrec* us = Srv->FindChannel(channel);
+		if (us)
+		{
+			ourTS = us->age;
+		}
+
+		log(DEBUG,"FJOIN detected, our TS=%lu, their TS=%lu",ourTS,TS);
+
+		/* do this first, so our mode reversals are correctly received by other servers
+		 * if there is a TS collision.
+		 */
+		DoOneToAllButSender(source,"FJOIN",params,source);
+		
+		for (unsigned int usernum = 2; usernum < params.size(); usernum++)
+		{
+			/* process one channel at a time, applying modes. */
+			char* usr = (char*)params[usernum].c_str();
+			/* Safety check just to make sure someones not sent us an FJOIN full of spaces
+			 * (is this even possible?) */
+			if (usr && *usr)
+			{
+				char permissions = *usr;
+				switch (permissions)
+				{
+					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))
+					{
+						/* 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
+						{
+							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);
+						}
+						strcpy(mode_users[1],"+");
+						modectr = 2;
+					}
+				}
+			}
+		}
+		/* there werent enough modes built up to flush it during FJOIN,
+		 * or, there are a number left over. flush them out.
+		 */
+		if ((modectr > 2) && (who))
+		{
+			if (ourTS >= TS)
+			{
+				log(DEBUG,"Our our channel newer than theirs, accepting their modes");
+				Srv->SendMode(mode_users,modectr,who);
+			}
+			else
+			{
+				log(DEBUG,"Their channel newer than ours, bouncing their modes");
+				std::deque<std::string> params;
+				*mode_users[1] = '-';
+				for (unsigned int x = 0; x < modectr; x++)
+				{
+					params.push_back(mode_users[x]);
+				}
+				DoOneToMany(Srv->GetServerName(),"FMODE",params);
+			}
+		}
+		return true;
+	}
+
+	/* NICK command */
+	bool IntroduceClient(std::string source, std::deque<std::string> &params)
+	{
+		if (params.size() < 8)
+			return true;
+		if (params.size() > 8)
+		{
+			this->WriteLine(":"+Srv->GetServerName()+" KILL "+params[1]+" :Invalid client introduction ("+params[1]+"?)");
+			return true;
+		}
+		// NICK age nick host dhost ident +modes ip :gecos
+		//   0   123  4 56   7
+		time_t age = atoi(params[0].c_str());
+		std::string modes = params[5];
+		while (*(modes.c_str()) == '+')
+		{
+			char* m = (char*)modes.c_str();
+			m++;
+			modes = m;
+		}
+		char* tempnick = (char*)params[1].c_str();
+		log(DEBUG,"Introduce client %s!%s@%s",tempnick,params[4].c_str(),params[2].c_str());
+		
+		user_hash::iterator iter;
+		iter = clientlist.find(tempnick);
+		if (iter != clientlist.end())
+		{
+			// nick collision
+			log(DEBUG,"Nick collision on %s!%s@%s: %lu %lu",tempnick,params[4].c_str(),params[2].c_str(),(unsigned long)age,(unsigned long)iter->second->age);
+			this->WriteLine(":"+Srv->GetServerName()+" KILL "+tempnick+" :Nickname collision");
+			return true;
+		}
+
+		clientlist[tempnick] = new userrec();
+		clientlist[tempnick]->fd = FD_MAGIC_NUMBER;
+		strlcpy(clientlist[tempnick]->nick, tempnick,NICKMAX-1);
+		strlcpy(clientlist[tempnick]->host, params[2].c_str(),63);
+		strlcpy(clientlist[tempnick]->dhost, params[3].c_str(),63);
+		clientlist[tempnick]->server = (char*)FindServerNamePtr(source.c_str());
+		strlcpy(clientlist[tempnick]->ident, params[4].c_str(),IDENTMAX);
+		strlcpy(clientlist[tempnick]->fullname, params[7].c_str(),MAXGECOS);
+		clientlist[tempnick]->registered = 7;
+		clientlist[tempnick]->signon = age;
+		strlcpy(clientlist[tempnick]->modes, modes.c_str(),53);
+		for (char *v = clientlist[tempnick]->modes; *v; v++)
+		{
+			switch (*v)
+			{
+				case 'i':
+					clientlist[tempnick]->modebits |= UM_INVISIBLE;
+				break;
+				case 'w':
+					clientlist[tempnick]->modebits |= UM_WALLOPS;
+				break;
+				case 's':
+					clientlist[tempnick]->modebits |= UM_SERVERNOTICE;
+				break;
+				default:
+				break;
+			}
+		}
+		inet_aton(params[6].c_str(),&clientlist[tempnick]->ip4);
+
+		WriteOpers("*** Client connecting at %s: %s!%s@%s [%s]",clientlist[tempnick]->server,clientlist[tempnick]->nick,clientlist[tempnick]->ident,clientlist[tempnick]->host,(char*)inet_ntoa(clientlist[tempnick]->ip4));
+
+		params[7] = ":" + params[7];
+		DoOneToAllButSender(source,"NICK",params,source);
+
+		// Increment the Source Servers User Count..
+		TreeServer* SourceServer = FindServer(source);
+		if (SourceServer)
+		{
+			SourceServer->AddUser(clientlist[tempnick]);
+			SourceServer->AddUserCount();
+		}
+
+		return true;
+	}
+
+	/* Send one or more FJOINs for a channel of users.
+	 * If the length of a single line is more than 480-NICKMAX
+	 * in length, it is split over multiple lines.
+	 */
+	void SendFJoins(TreeServer* Current, chanrec* c)
+	{
+		log(DEBUG,"Sending FJOINs to other server for %s",c->name);
+		char list[MAXBUF];
+		std::string individual_halfops = ":"+Srv->GetServerName()+" FMODE "+c->name;
+		
+		size_t dlen, curlen;
+		dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
+		int numusers = 0;
+		char* ptr = list + dlen;
+
+		CUList *ulist = c->GetUsers();
+		std::vector<userrec*> specific_halfop;
+		std::vector<userrec*> specific_voice;
+
+		for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
+		{
+			int x = cflags(i->second,c);
+			if ((x & UCMODE_HOP) && (x & UCMODE_OP))
+			{
+				specific_halfop.push_back(i->second);
+			}
+			if (((x & UCMODE_HOP) || (x & UCMODE_OP)) && (x & UCMODE_VOICE))
+			{
+				specific_voice.push_back(i->second);
+			}
+
+			const char* n = "";
+			if (x & UCMODE_OP)
+			{
+				n = "@";
+			}
+			else if (x & UCMODE_HOP)
+			{
+				n = "%";
+			}
+			else if (x & UCMODE_VOICE)
+			{
+				n = "+";
+			}
+
+			size_t ptrlen = snprintf(ptr, MAXBUF, " %s%s", n, i->second->nick);
+
+			curlen += ptrlen;
+			ptr += ptrlen;
+
+			numusers++;
+
+			if (curlen > (480-NICKMAX))
+			{
+				this->WriteLine(list);
+				dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",Srv->GetServerName().c_str(),c->name,(unsigned long)c->age);
+				ptr = list + dlen;
+				ptrlen = 0;
+				numusers = 0;
+				for (unsigned int y = 0; y < specific_voice.size(); y++)
+				{
+					this->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" +v "+specific_voice[y]->nick);
+				}
+				for (unsigned int y = 0; y < specific_halfop.size(); y++)
+				{
+					this->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" +h "+specific_halfop[y]->nick);
+				}
+			}
+		}
+		if (numusers)
+		{
+			this->WriteLine(list);
+			for (unsigned int y = 0; y < specific_voice.size(); y++)
+			{
+				this->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" +v "+specific_voice[y]->nick);
+			}
+			for (unsigned int y = 0; y < specific_halfop.size(); y++)
+			{
+				this->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" +h "+specific_halfop[y]->nick);
+			}
+		}
+	}
+
+	/* Send G, Q, Z and E lines */
+	void SendXLines(TreeServer* Current)
+	{
+		char data[MAXBUF];
+		std::string n = Srv->GetServerName();
+		const char* sn = n.c_str();
+		int iterations = 0;
+		/* Yes, these arent too nice looking, but they get the job done */
+		for (std::vector<ZLine>::iterator i = zlines.begin(); i != zlines.end(); i++, iterations++)
+		{
+			snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s",sn,i->ipaddr,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
+			this->WriteLine(data);
+		}
+		for (std::vector<QLine>::iterator i = qlines.begin(); i != qlines.end(); i++, iterations++)
+		{
+			snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s",sn,i->nick,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
+			this->WriteLine(data);
+		}
+		for (std::vector<GLine>::iterator i = glines.begin(); i != glines.end(); i++, iterations++)
+		{
+			snprintf(data,MAXBUF,":%s ADDLINE G %s %s %lu %lu :%s",sn,i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
+			this->WriteLine(data);
+		}
+		for (std::vector<ELine>::iterator i = elines.begin(); i != elines.end(); i++, iterations++)
+		{
+			snprintf(data,MAXBUF,":%s ADDLINE E %s %s %lu %lu :%s",sn,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++, iterations++)
+		{
+			snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s",sn,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++, iterations++)
+		{
+			snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s",sn,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++, iterations++)
+		{
+			snprintf(data,MAXBUF,":%s ADDLINE G %s %s %lu %lu :%s",sn,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++, iterations++)
+		{
+			snprintf(data,MAXBUF,":%s ADDLINE E %s %s %lu %lu :%s",sn,i->hostmask,i->source,(unsigned long)i->set_time,(unsigned long)i->duration,i->reason);
+			this->WriteLine(data);
+		}
+	}
+
+	/* Send channel modes and topics */
+	void SendChannelModes(TreeServer* Current)
+	{
+		char data[MAXBUF];
+		std::deque<std::string> list;
+		int iterations = 0;
+		std::string n = Srv->GetServerName();
+		const char* sn = n.c_str();
+		for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++, iterations++)
+		{
+			SendFJoins(Current, c->second);
+			snprintf(data,MAXBUF,":%s FMODE %s +%s",sn,c->second->name,chanmodes(c->second,true));
+			this->WriteLine(data);
+			if (*c->second->topic)
+			{
+				snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",sn,c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic);
+				this->WriteLine(data);
+			}
+			for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
+			{
+				snprintf(data,MAXBUF,":%s FMODE %s +b %s",sn,c->second->name,b->data);
+				this->WriteLine(data);
+			}
+			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(I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
+			}
+		}
+	}
+
+	/* send all users and their oper state/modes */
+	void SendUsers(TreeServer* Current)
+	{
+		char data[MAXBUF];
+		std::deque<std::string> list;
+		int iterations = 0;
+		for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++, iterations++)
+		{
+			if (u->second->registered == 7)
+			{
+				snprintf(data,MAXBUF,":%s NICK %lu %s %s %s %s +%s %s :%s",u->second->server,(unsigned long)u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->modes,(char*)inet_ntoa(u->second->ip4),u->second->fullname);
+				this->WriteLine(data);
+				if (*u->second->oper)
+				{
+					this->WriteLine(":"+std::string(u->second->nick)+" OPERTYPE "+std::string(u->second->oper));
+				}
+				if (*u->second->awaymsg)
+				{
+					this->WriteLine(":"+std::string(u->second->nick)+" AWAY :"+std::string(u->second->awaymsg));
+				}
+				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(I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)TreeProtocolModule,(void*)this,list[j]));
+				}
+			}
+		}
+	}
+
+	/* This function is called when we want to send a netburst to a local
+	 * server. There is a set order we must do this, because for example
+	 * users require their servers to exist, and channels require their
+	 * users to exist. You get the idea.
+	 */
+	void DoBurst(TreeServer* s)
+	{
+		/* The calls here to ServerInstance-> yield the processing
+		 * back to the core so that a large burst is split into at least 6 sections
+		 * (possibly more)
+		 */
+		std::string burst = "BURST "+ConvToStr(time(NULL));
+		std::string endburst = "ENDBURST";
+		// Because by the end of the netburst, it  could be gone!
+		std::string name = s->GetName();
+		Srv->SendOpers("*** Bursting to \2"+name+"\2.");
+		this->WriteLine(burst);
+		/* send our version string */
+		this->WriteLine(":"+Srv->GetServerName()+" VERSION :"+Srv->GetVersion());
+		/* Send server tree */
+		this->SendServers(TreeRoot,s,1);
+		/* Send users and their oper status */
+		this->SendUsers(s);
+		/* Send everything else (channel modes, xlines etc) */
+		this->SendChannelModes(s);
+		this->SendXLines(s);		
+		FOREACH_MOD(I_OnSyncOtherMetaData,OnSyncOtherMetaData((Module*)TreeProtocolModule,(void*)this));
+		this->WriteLine(endburst);
+		Srv->SendOpers("*** Finished bursting to \2"+name+"\2.");
+	}
+
+	/* This function is called when we receive data from a remote
+	 * server. We buffer the data in a std::string (it doesnt stay
+	 * there for long), reading using InspSocket::Read() which can
+	 * read up to 16 kilobytes in one operation.
+	 *
+	 * IF THIS FUNCTION RETURNS FALSE, THE CORE CLOSES AND DELETES
+	 * THE SOCKET OBJECT FOR US.
+	 */
+	virtual bool OnDataReady()
+	{
+		char* data = this->Read();
+		/* Check that the data read is a valid pointer and it has some content */
+		if (data && *data)
+		{
+			this->in_buffer.append(data);
+			/* While there is at least one new line in the buffer,
+			 * do something useful (we hope!) with it.
+			 */
+			while (in_buffer.find("\n") != std::string::npos)
+			{
+				std::string ret = in_buffer.substr(0,in_buffer.find("\n")-1);
+				in_buffer = in_buffer.substr(in_buffer.find("\n")+1,in_buffer.length()-in_buffer.find("\n"));
+				if (ret.find("\r") != std::string::npos)
+					ret = in_buffer.substr(0,in_buffer.find("\r")-1);
+				/* 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, 0);
+							for (int t = 0; t < nbytes; t++)
+								if (result[t] == '\7') result[t] = 0;
+							ret = result;
+						}
+					}
+				}
+				if (!this->ProcessLine(ret))
+				{
+					log(DEBUG,"ProcessLine says no!");
+					return false;
+				}
+			}
+			return true;
+		}
+		/* EAGAIN returns an empty but non-NULL string, so this
+		 * evaluates to TRUE for EAGAIN but to FALSE for EOF.
+		 */
+		return (data && !*data);
+	}
+
+	int WriteLine(std::string line)
+	{
+		log(DEBUG,"OUT: %s",line.c_str());
+		if (this->ctx_out)
+		{
+			char result[10240];
+			char result64[10240];
+			if (this->keylength)
+			{
+				// pad it to the key length
+				int n = this->keylength - (line.length() % this->keylength);
+				if (n)
+				{
+					log(DEBUG,"Append %d chars to line to make it %d long from %d, key length %d",n,n+line.length(),line.length(),this->keylength);
+					line.append(n,'\7');
+				}
+			}
+			unsigned int ll = line.length();
+			ctx_out->Encrypt(line.c_str(), result, ll, 0);
+			to64frombits((unsigned char*)result64,(unsigned char*)result,ll);
+			line = result64;
+			//int from64tobits(char *out, const char *in, int maxlen);
+		}
+		return this->Write(line + "\r\n");
+	}
+
+	/* Handle ERROR command */
+	bool Error(std::deque<std::string> &params)
+	{
+		if (params.size() < 1)
+			return false;
+		WriteOpers("*** ERROR from %s: %s",(InboundServerName != "" ? InboundServerName.c_str() : myhost.c_str()),params[0].c_str());
+		/* we will return false to cause the socket to close. */
+		return false;
+	}
+
+	/* Because the core won't let users or even SERVERS set +o,
+	 * we use the OPERTYPE command to do this.
+	 */
+	bool OperType(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() != 1)
+		{
+			log(DEBUG,"Received invalid oper type from %s",prefix.c_str());
+			return true;
+		}
+		std::string opertype = params[0];
+		userrec* u = Srv->FindNick(prefix);
+		if (u)
+		{
+			strlcpy(u->oper,opertype.c_str(),NICKMAX-1);
+			if (!strchr(u->modes,'o'))
+			{
+				strcat(u->modes,"o");
+			}
+			DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
+		}
+		return true;
+	}
+
+	/* Because Andy insists that services-compatible servers must
+	 * implement SVSNICK and SVSJOIN, that's exactly what we do :p
+	 */
+	bool ForceNick(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() < 3)
+			return true;
+
+		userrec* u = Srv->FindNick(params[0]);
+
+		if (u)
+		{
+			DoOneToAllButSender(prefix,"SVSNICK",params,prefix);
+			if (IS_LOCAL(u))
+			{
+				std::deque<std::string> par;
+				par.push_back(params[1]);
+				DoOneToMany(u->nick,"NICK",par);
+				Srv->ChangeUserNick(u,params[1]);
+				u->age = atoi(params[2].c_str());
+			}
+		}
+		return true;
+	}
+
+	bool ServiceJoin(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() < 2)
+			return true;
+
+		userrec* u = Srv->FindNick(params[0]);
+
+		if (u)
+		{
+			Srv->JoinUserToChannel(u,params[1],"");
+			DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
+		}
+		return true;
+	}
+
+	bool RemoteRehash(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() < 1)
+			return false;
+
+		std::string servermask = params[0];
+
+		if (Srv->MatchText(Srv->GetServerName(),servermask))
+		{
+			Srv->SendOpers("*** Remote rehash initiated from server \002"+prefix+"\002.");
+			Srv->RehashServer();
+			ReadConfiguration(false);
+		}
+		DoOneToAllButSender(prefix,"REHASH",params,prefix);
+		return true;
+	}
+
+	bool RemoteKill(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() != 2)
+			return true;
+
+		std::string nick = params[0];
+		userrec* u = Srv->FindNick(prefix);
+		userrec* who = Srv->FindNick(nick);
+
+		if (who)
+		{
+			/* Prepend kill source, if we don't have one */
+			std::string sourceserv = prefix;
+			if (u)
+			{
+				sourceserv = u->server;
+			}
+			if (*(params[1].c_str()) != '[')
+			{
+				params[1] = "[" + sourceserv + "] Killed (" + params[1] +")";
+			}
+			std::string reason = params[1];
+			params[1] = ":" + params[1];
+			DoOneToAllButSender(prefix,"KILL",params,sourceserv);
+			Srv->QuitUser(who,reason);
+		}
+		return true;
+	}
+
+	bool LocalPong(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() < 1)
+			return true;
+
+		if (params.size() == 1)
+		{
+			TreeServer* ServerSource = FindServer(prefix);
+			if (ServerSource)
+			{
+				ServerSource->SetPingFlag();
+			}
+		}
+		else
+		{
+			std::string forwardto = params[1];
+			if (forwardto == Srv->GetServerName())
+			{
+				/*
+				 * this is a PONG for us
+				 * if the prefix is a user, check theyre local, and if they are,
+				 * dump the PONG reply back to their fd. If its a server, do nowt.
+				 * Services might want to send these s->s, but we dont need to yet.
+				 */
+				userrec* u = Srv->FindNick(prefix);
+
+				if (u)
+				{
+					WriteServ(u->fd,"PONG %s %s",params[0].c_str(),params[1].c_str());
+				}
+			}
+			else
+			{
+				// not for us, pass it on :)
+				DoOneToOne(prefix,"PONG",params,forwardto);
+			}
+		}
+
+		return true;
+	}
+	
+	bool MetaData(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() < 3)
+			return true;
+
+		TreeServer* ServerSource = FindServer(prefix);
+
+		if (ServerSource)
+		{
+			if (params[0] == "*")
+			{
+				FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
+			}
+			else if (*(params[0].c_str()) == '#')
+			{
+				chanrec* c = Srv->FindChannel(params[0]);
+				if (c)
+				{
+					FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
+				}
+			}
+			else if (*(params[0].c_str()) != '#')
+			{
+				userrec* u = Srv->FindNick(params[0]);
+				if (u)
+				{
+					FOREACH_MOD(I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
+				}
+			}
+		}
+
+		params[2] = ":" + params[2];
+		DoOneToAllButSender(prefix,"METADATA",params,prefix);
+		return true;
+	}
+
+	bool ServerVersion(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() < 1)
+			return true;
+
+		TreeServer* ServerSource = FindServer(prefix);
+
+		if (ServerSource)
+		{
+			ServerSource->SetVersion(params[0]);
+		}
+		params[0] = ":" + params[0];
+		DoOneToAllButSender(prefix,"VERSION",params,prefix);
+		return true;
+	}
+
+	bool ChangeHost(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() < 1)
+			return true;
+
+		userrec* u = Srv->FindNick(prefix);
+
+		if (u)
+		{
+			Srv->ChangeHost(u,params[0]);
+			DoOneToAllButSender(prefix,"FHOST",params,u->server);
+		}
+		return true;
+	}
+
+	bool AddLine(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() < 6)
+			return true;
+
+		bool propogate = false;
+
+		switch (*(params[0].c_str()))
+		{
+			case 'Z':
+				propogate = add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
+				zline_set_creation_time((char*)params[1].c_str(), atoi(params[3].c_str()));
+			break;
+			case 'Q':
+				propogate = add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
+				qline_set_creation_time((char*)params[1].c_str(), atoi(params[3].c_str()));
+			break;
+			case 'E':
+				propogate = add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
+				eline_set_creation_time((char*)params[1].c_str(), atoi(params[3].c_str()));
+			break;
+			case 'G':
+				propogate = add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
+				gline_set_creation_time((char*)params[1].c_str(), atoi(params[3].c_str()));
+			break;
+			case 'K':
+				propogate = add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
+			break;
+			default:
+				/* Just in case... */
+				Srv->SendOpers("*** \2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
+				propogate = false;
+			break;
+		}
+
+		/* Send it on its way */
+		if (propogate)
+		{
+			if (atoi(params[4].c_str()))
+			{
+				WriteOpers("*** %s Added %cLINE on %s to expire in %lu seconds (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),atoi(params[4].c_str()),params[5].c_str());
+			}
+			else
+			{
+				WriteOpers("*** %s Added permenant %cLINE on %s (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),params[5].c_str());
+			}
+			params[5] = ":" + params[5];
+			DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
+		}
+		if (!this->bursting)
+		{
+			log(DEBUG,"Applying lines...");
+			apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
+		}
+		return true;
+	}
+
+	bool ChangeName(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() < 1)
+			return true;
+
+		userrec* u = Srv->FindNick(prefix);
+
+		if (u)
+		{
+			Srv->ChangeGECOS(u,params[0]);
+			params[0] = ":" + params[0];
+			DoOneToAllButSender(prefix,"FNAME",params,u->server);
+		}
+		return true;
+	}
+
+	bool Whois(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() < 1)
+			return true;
+
+		log(DEBUG,"In IDLE command");
+		userrec* u = Srv->FindNick(prefix);
+
+		if (u)
+		{
+			log(DEBUG,"USER EXISTS: %s",u->nick);
+			// an incoming request
+			if (params.size() == 1)
+			{
+				userrec* x = Srv->FindNick(params[0]);
+				if ((x) && (x->fd > -1))
+				{
+					userrec* x = Srv->FindNick(params[0]);
+					log(DEBUG,"Got IDLE");
+					char signon[MAXBUF];
+					char idle[MAXBUF];
+					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
+				{
+					// not ours pass it on
+					DoOneToOne(prefix,"IDLE",params,x->server);
+				}
+			}
+			else if (params.size() == 3)
+			{
+				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;
+					unsigned long signon = atoi(params[1].c_str());
+					unsigned long idle = atoi(params[2].c_str());
+					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
+				{
+					// not ours, pass it on
+					DoOneToOne(prefix,"IDLE",params,who_to_send_to->server);
+				}
+			}
+		}
+		return true;
+	}
+
+	bool Push(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() < 2)
+			return true;
+
+		userrec* u = Srv->FindNick(params[0]);
+
+		if (IS_LOCAL(u))
+		{
+			// push the raw to the user
+			if (Srv->IsUlined(prefix))
+			{
+				::Write(u->fd,"%s",params[1].c_str());
+			}
+			else
+			{
+				log(DEBUG,"PUSH from non-ulined server dropped into the bit-bucket:  :%s PUSH %s :%s",prefix.c_str(),params[0].c_str(),params[1].c_str());
+			}
+		}
+		else
+		{
+			// continue the raw onwards
+			params[1] = ":" + params[1];
+			DoOneToOne(prefix,"PUSH",params,u->server);
+		}
+		return true;
+	}
+
+	bool Time(std::string prefix, std::deque<std::string> &params)
+	{
+		// :source.server TIME remote.server sendernick
+		// :remote.server TIME source.server sendernick TS
+		if (params.size() == 2)
+		{
+			// someone querying our time?
+			if (Srv->GetServerName() == params[0])
+			{
+				userrec* u = Srv->FindNick(params[1]);
+				if (u)
+				{
+					char curtime[256];
+					snprintf(curtime,256,"%lu",(unsigned long)time(NULL));
+					params.push_back(curtime);
+					params[0] = prefix;
+					DoOneToOne(Srv->GetServerName(),"TIME",params,params[0]);
+				}
+			}
+			else
+			{
+				// not us, pass it on
+				userrec* u = Srv->FindNick(params[1]);
+				if (u)
+					DoOneToOne(prefix,"TIME",params,params[0]);
+			}
+		}
+		else if (params.size() == 3)
+		{
+			// a response to a previous TIME
+			userrec* u = Srv->FindNick(params[1]);
+			if ((u) && (IS_LOCAL(u)))
+			{
+			time_t rawtime = atol(params[2].c_str());
+			struct tm * timeinfo;
+			timeinfo = localtime(&rawtime);
+				char tms[26];
+				snprintf(tms,26,"%s",asctime(timeinfo));
+				tms[24] = 0;
+			WriteServ(u->fd,"391 %s %s :%s",u->nick,prefix.c_str(),tms);
+			}
+			else
+			{
+				if (u)
+					DoOneToOne(prefix,"TIME",params,u->server);
+			}
+		}
+		return true;
+	}
+	
+	bool LocalPing(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() < 1)
+			return true;
+
+		if (params.size() == 1)
+		{
+			std::string stufftobounce = params[0];
+			this->WriteLine(":"+Srv->GetServerName()+" PONG "+stufftobounce);
+			return true;
+		}
+		else
+		{
+			std::string forwardto = params[1];
+			if (forwardto == Srv->GetServerName())
+			{
+				// this is a ping for us, send back PONG to the requesting server
+				params[1] = params[0];
+				params[0] = forwardto;
+				DoOneToOne(forwardto,"PONG",params,params[1]);
+			}
+			else
+			{
+				// not for us, pass it on :)
+				DoOneToOne(prefix,"PING",params,forwardto);
+			}
+			return true;
+		}
+	}
+
+	bool RemoteServer(std::string prefix, std::deque<std::string> &params)
+	{
+		if (params.size() < 4)
+			return false;
+
+		std::string servername = params[0];
+		std::string password = params[1];
+		// hopcount is not used for a remote server, we calculate this ourselves
+		std::string description = params[3];
+		TreeServer* ParentOfThis = FindServer(prefix);
+
+		if (!ParentOfThis)
+		{
+			this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
+			return false;
+		}
+		TreeServer* CheckDupe = FindServer(servername);
+		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);
+		ParentOfThis->AddChild(Node);
+		params[3] = ":" + params[3];
+		DoOneToAllButSender(prefix,"SERVER",params,prefix);
+		Srv->SendOpers("*** Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
+		return true;
+	}
+
+	bool Outbound_Reply_Server(std::deque<std::string> &params)
+	{
+		if (params.size() < 4)
+			return false;
+
+		irc::string servername = params[0].c_str();
+		std::string sname = params[0];
+		std::string password = params[1];
+		int hops = atoi(params[2].c_str());
+
+		if (hops)
+		{
+			this->WriteLine("ERROR :Server too far away for authentication");
+			Srv->SendOpers("*** Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
+			return false;
+		}
+		std::string description = params[3];
+		for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
+		{
+			if ((x->Name == servername) && (x->RecvPass == password))
+			{
+				TreeServer* CheckDupe = FindServer(sname);
+				if (CheckDupe)
+				{
+					this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
+					Srv->SendOpers("*** Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
+					return false;
+				}
+				// Begin the sync here. this kickstarts the
+				// other side, waiting in WAIT_AUTH_2 state,
+				// into starting their burst, as it shows
+				// that we're happy.
+				this->LinkState = CONNECTED;
+				// we should add the details of this server now
+				// to the servers tree, as a child of the root
+				// node.
+				TreeServer* Node = new TreeServer(sname,description,TreeRoot,this);
+				TreeRoot->AddChild(Node);
+				params[3] = ":" + params[3];
+				DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,sname);
+				this->bursting = true;
+				this->DoBurst(Node);
+				return true;
+			}
+		}
+		this->WriteLine("ERROR :Invalid credentials");
+		Srv->SendOpers("*** Server connection from \2"+sname+"\2 denied, invalid link credentials");
+		return false;
+	}
+
+	bool Inbound_Server(std::deque<std::string> &params)
+	{
+		if (params.size() < 4)
+			return false;
+
+		irc::string servername = params[0].c_str();
+		std::string sname = params[0];
+		std::string password = params[1];
+		int hops = atoi(params[2].c_str());
+
+		if (hops)
+		{
+			this->WriteLine("ERROR :Server too far away for authentication");
+			Srv->SendOpers("*** Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
+			return false;
+		}
+		std::string description = params[3];
+		for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
+		{
+			if ((x->Name == servername) && (x->RecvPass == password))
+			{
+				TreeServer* CheckDupe = FindServer(sname);
+				if (CheckDupe)
+				{
+					this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
+					Srv->SendOpers("*** Server connection from \2"+sname+"\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"+sname+"\2 denied, remote server did not enable AES.");
+					return false;
+				}
+				Srv->SendOpers("*** Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] ("+description+")");
+				this->InboundServerName = sname;
+				this->InboundDescription = description;
+				// this is good. Send our details: Our server name and description and hopcount of 0,
+				// along with the sendpass from this block.
+				this->WriteLine("SERVER "+Srv->GetServerName()+" "+x->SendPass+" 0 :"+Srv->GetServerDescription());
+				// move to the next state, we are now waiting for THEM.
+				this->LinkState = WAIT_AUTH_2;
+				return true;
+			}
+		}
+		this->WriteLine("ERROR :Invalid credentials");
+		Srv->SendOpers("*** Server connection from \2"+sname+"\2 denied, invalid link credentials");
+		return false;
+	}
+
+	void Split(std::string line, bool stripcolon, std::deque<std::string> &n)
+	{
+		// we don't do anything with a line > 2048
+		if (line.length() > 2048)
+		{
+			log(DEBUG,"Line too long!");
+			return;
+		}
+		if (!strchr(line.c_str(),' '))
+		{
+			n.push_back(line);
+			return;
+		}
+		std::stringstream s(line);
+		int count = 0;
+		char param[1024];
+		char* pptr = param;
+
+		n.clear();
+		int item = 0;
+		while (!s.eof())
+		{
+			char c = 0;
+			s.get(c);
+			if (c == ' ')
+			{
+				*pptr = 0;
+				if (*param)
+					n.push_back(param);
+				*param = count = 0;
+				pptr = param;
+				item++;
+			}
+			else
+			{
+				if (!s.eof())
+				{
+					*pptr++ = c;
+					count++;
+				}
+				if ((*param == ':') && (count == 1) && (item > 0))
+				{
+					*param = count = 0;
+					pptr = param;
+					while (!s.eof())
+					{
+						s.get(c);
+						if (!s.eof())
+						{
+							*pptr++ = c;
+							count++;
+						}
+					}
+					*pptr = 0;
+					n.push_back(param);
+					*param = count = 0;
+					pptr = param;
+				}
+			}
+		}
+		*pptr = 0;
+		if (*param)
+		{
+			n.push_back(param);
+		}
+
+		return;
+	}
+
+	bool ProcessLine(std::string line)
+	{
+		char* l = (char*)line.c_str();
+		for (char* x = l; *x; x++)
+		{
+			if ((*x == '\r') || (*x == '\n'))
+				*x = 0;
+		}
+		if (!*l)
+			return true;
+
+		log(DEBUG,"IN: %s",l);
+
+		std::deque<std::string> params;
+		this->Split(l,true,params);
+		irc::string command = "";
+		std::string prefix = "";
+		if (((params[0].c_str())[0] == ':') && (params.size() > 1))
+		{
+			prefix = params[0];
+			command = params[1].c_str();
+			char* pref = (char*)prefix.c_str();
+			prefix = ++pref;
+			params.pop_front();
+			params.pop_front();
+		}
+		else
+		{
+			prefix = "";
+			command = params[0].c_str();
+			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;
+			
+			case WAIT_AUTH_1:
+				// Waiting for SERVER command from remote server. Server initiating
+				// the connection sends the first SERVER command, listening server
+				// 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 == "PASS")
+				{
+					/* Silently ignored */
+				}
+				else if (command == "SERVER")
+				{
+					return this->Inbound_Server(params);
+				}
+				else if (command == "ERROR")
+				{
+					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
+				// password.
+				if (command == "SERVER")
+				{
+					// cant do this, they sent it to us in the WAIT_AUTH_1 state!
+					// 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")
+				{
+					if (params.size())
+					{
+						/* If a time stamp is provided, try and check syncronization */
+						time_t THEM = atoi(params[0].c_str());
+						long delta = THEM-time(NULL);
+						if ((delta < -600) || (delta > 600))
+						{
+							WriteOpers("*** \2ERROR\2: Your clocks are out by %d seconds (this is more than ten minutes). Link aborted, \2PLEASE SYNC YOUR CLOCKS!\2",abs(delta));
+							this->WriteLine("ERROR :Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than ten minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
+							return false;
+						}
+						else if ((delta < -60) || (delta > 60))
+						{
+							WriteOpers("*** \2WARNING\2: Your clocks are out by %d seconds, please consider synching your clocks.",abs(delta));
+						}
+					}
+					this->LinkState = CONNECTED;
+					Node = new TreeServer(InboundServerName,InboundDescription,TreeRoot,this);
+					TreeRoot->AddChild(Node);
+					params.clear();
+					params.push_back(InboundServerName);
+					params.push_back("*");
+					params.push_back("1");
+					params.push_back(":"+InboundDescription);
+					DoOneToAllButSender(TreeRoot->GetName(),"SERVER",params,InboundServerName);
+					this->bursting = true;
+					this->DoBurst(Node);
+				}
+				else if (command == "ERROR")
+				{
+					return this->Error(params);
+				}
+				else if (command == "CAPAB")
+				{
+					return this->Capab(params);
+				}
+				
+			break;
+			case LISTENER:
+				this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
+				return false;
+			break;
+			case CONNECTING:
+				if (command == "SERVER")
+				{
+					// another server we connected to, which was in WAIT_AUTH_1 state,
+					// has just sent us their credentials. If we get this far, theyre
+					// happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
+					// if we're happy with this, we should send our netburst which
+					// kickstarts the merge.
+					return this->Outbound_Reply_Server(params);
+				}
+				else if (command == "ERROR")
+				{
+					return this->Error(params);
+				}
+			break;
+			case CONNECTED:
+				// This is the 'authenticated' state, when all passwords
+				// have been exchanged and anything past this point is taken
+				// as gospel.
+				
+				if (prefix != "")
+				{
+					std::string direction = prefix;
+					userrec* t = Srv->FindNick(prefix);
+					if (t)
+					{
+						direction = t->server;
+					}
+					TreeServer* route_back_again = BestRouteTo(direction);
+					if ((!route_back_again) || (route_back_again->GetSocket() != this))
+					{
+						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")
+				{
+					/* Services expects us to implement
+					 * SVSMODE. In inspircd its the same as
+					 * MODE anyway.
+					 */
+					command = "MODE";
+				}
+				std::string target = "";
+				/* Yes, know, this is a mess. Its reasonably fast though as we're
+				 * working with std::string here.
+				 */
+				if ((command == "NICK") && (params.size() > 1))
+				{
+					return this->IntroduceClient(prefix,params);
+				}
+				else if (command == "FJOIN")
+				{
+					return this->ForceJoin(prefix,params);
+				}
+				else if (command == "SERVER")
+				{
+					return this->RemoteServer(prefix,params);
+				}
+				else if (command == "ERROR")
+				{
+					return this->Error(params);
+				}
+				else if (command == "OPERTYPE")
+				{
+					return this->OperType(prefix,params);
+				}
+				else if (command == "FMODE")
+				{
+					return this->ForceMode(prefix,params);
+				}
+				else if (command == "KILL")
+				{
+					return this->RemoteKill(prefix,params);
+				}
+				else if (command == "FTOPIC")
+				{
+					return this->ForceTopic(prefix,params);
+				}
+				else if (command == "REHASH")
+				{
+					return this->RemoteRehash(prefix,params);
+				}
+				else if (command == "METADATA")
+				{
+					return this->MetaData(prefix,params);
+				}
+				else if (command == "PING")
+				{
+					/*
+					 * We just got a ping from a server that's bursting.
+					 * This can't be right, so set them to not bursting, and
+					 * apply their lines.
+					 */
+					if (this->bursting)
+					{
+						this->bursting = false;
+						apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
+					}
+					if (prefix == "")
+					{
+						prefix = this->GetName();
+					}
+					return this->LocalPing(prefix,params);
+				}
+				else if (command == "PONG")
+				{
+					/*
+					 * We just got a pong from a server that's bursting.
+					 * This can't be right, so set them to not bursting, and
+					 * apply their lines.
+					 */
+					if (this->bursting)
+					{
+						this->bursting = false;
+						apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
+					}
+					if (prefix == "")
+					{
+						prefix = this->GetName();
+					}
+					return this->LocalPong(prefix,params);
+				}
+				else if (command == "VERSION")
+				{
+					return this->ServerVersion(prefix,params);
+				}
+				else if (command == "FHOST")
+				{
+					return this->ChangeHost(prefix,params);
+				}
+				else if (command == "FNAME")
+				{
+					return this->ChangeName(prefix,params);
+				}
+				else if (command == "ADDLINE")
+				{
+					return this->AddLine(prefix,params);
+				}
+				else if (command == "SVSNICK")
+				{
+					if (prefix == "")
+					{
+						prefix = this->GetName();
+					}
+					return this->ForceNick(prefix,params);
+				}
+				else if (command == "IDLE")
+				{
+					return this->Whois(prefix,params);
+				}
+				else if (command == "PUSH")
+				{
+					return this->Push(prefix,params);
+				}
+				else if (command == "TIME")
+				{
+					return this->Time(prefix,params);
+				}
+				else if ((command == "KICK") && (IsServer(prefix)))
+				{
+					std::string sourceserv = this->myhost;
+					if (params.size() == 3)
+					{
+						userrec* user = Srv->FindNick(params[1]);
+						chanrec* chan = Srv->FindChannel(params[0]);
+						if (user && chan)
+						{
+							server_kick_channel(user,chan,(char*)params[2].c_str(),false);
+						}
+					}
+					if (this->InboundServerName != "")
+					{
+						sourceserv = this->InboundServerName;
+					}
+					return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
+				}
+				else if (command == "SVSJOIN")
+				{
+					if (prefix == "")
+					{
+						prefix = this->GetName();
+					}
+					return this->ServiceJoin(prefix,params);
+				}
+				else if (command == "SQUIT")
+				{
+					if (params.size() == 2)
+					{
+						this->Squit(FindServer(params[0]),params[1]);
+					}
+					return true;
+				}
+				else if (command == "ENDBURST")
+				{
+					this->bursting = false;
+					apply_lines(APPLY_ZLINES|APPLY_GLINES|APPLY_QLINES);
+					std::string sourceserv = this->myhost;
+					if (this->InboundServerName != "")
+					{
+						sourceserv = this->InboundServerName;
+					}
+					WriteOpers("*** Received end of netburst from \2%s\2",sourceserv.c_str());
+					return true;
+				}
+				else
+				{
+					// not a special inter-server command.
+					// Emulate the actual user doing the command,
+					// this saves us having a huge ugly parser.
+					userrec* who = Srv->FindNick(prefix);
+					std::string sourceserv = this->myhost;
+					if (this->InboundServerName != "")
+					{
+						sourceserv = this->InboundServerName;
+					}
+					if (who)
+					{
+						if (command == "QUIT")
+						{
+							TreeServer* s = FindServer(who->server);
+							if (s)
+							{
+								s->DelUser(who);
+							}
+						}
+						else if ((command == "NICK") && (params.size() > 0))
+						{
+							/* On nick messages, check that the nick doesnt
+							 * already exist here. If it does, kill their copy,
+							 * and our copy.
+							 */
+							userrec* x = Srv->FindNick(params[0]);
+							if (x)
+							{
+								std::deque<std::string> p;
+								p.push_back(params[0]);
+								p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
+								DoOneToMany(Srv->GetServerName(),"KILL",p);
+								p.clear();
+								p.push_back(prefix);
+								p.push_back("Nickname collision");
+								DoOneToMany(Srv->GetServerName(),"KILL",p);
+								Srv->QuitUser(x,"Nickname collision ("+prefix+" -> "+params[0]+")");
+								userrec* y = Srv->FindNick(prefix);
+								if (y)
+								{
+									Srv->QuitUser(y,"Nickname collision");
+								}
+								return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
+							}
+						}
+						// its a user
+						target = who->server;
+						char* strparams[127];
+						for (unsigned int q = 0; q < params.size(); q++)
+						{
+							strparams[q] = (char*)params[q].c_str();
+						}
+						if (!Srv->CallCommandHandler(command.c_str(), strparams, params.size(), who))
+						{
+							this->WriteLine("ERROR :Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
+							return false;
+						}
+					}
+					else
+					{
+						// its not a user. Its either a server, or somethings screwed up.
+						if (IsServer(prefix))
+						{
+							target = Srv->GetServerName();
+						}
+						else
+						{
+							log(DEBUG,"Command with unknown origin '%s'",prefix.c_str());
+							return true;
+						}
+					}
+					return DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
+
+				}
+				return true;
+			break;
+		}
+		return true;
+	}
+
+	virtual std::string GetName()
+	{
+		std::string sourceserv = this->myhost;
+		if (this->InboundServerName != "")
+		{
+			sourceserv = this->InboundServerName;
+		}
+		return sourceserv;
+	}
+
+	virtual void OnTimeout()
+	{
+		if (this->LinkState == CONNECTING)
+		{
+			Srv->SendOpers("*** CONNECT: Connection to \002"+myhost+"\002 timed out.");
+		}
+	}
+
+	virtual void OnClose()
+	{
+		// Connection closed.
+		// If the connection is fully up (state CONNECTED)
+		// then propogate a netsplit to all peers.
+		std::string quitserver = this->myhost;
+		if (this->InboundServerName != "")
+		{
+			quitserver = this->InboundServerName;
+		}
+		TreeServer* s = FindServer(quitserver);
+		if (s)
+		{
+			Squit(s,"Remote host closed the connection");
+		}
+		WriteOpers("Server '\2%s\2' closed the connection.",quitserver.c_str());
+	}
+
+	virtual int OnIncomingConnection(int newsock, char* ip)
+	{
+		TreeSocket* s = new TreeSocket(newsock, ip);
+		Srv->AddSocket(s);
+		return true;
+	}
+};
+
+void AddThisServer(TreeServer* server, std::deque<TreeServer*> &list)
+{
+	for (unsigned int c = 0; c < list.size(); c++)
+	{
+		if (list[c] == server)
+		{
+			return;
+		}
+	}
+	list.push_back(server);
+}
+
+// returns a list of DIRECT servernames for a specific channel
+void GetListOfServersForChannel(chanrec* c, std::deque<TreeServer*> &list)
+{
+	CUList *ulist = c->GetUsers();
+	for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
+	{
+		if (i->second->fd < 0)
+		{
+			TreeServer* best = BestRouteTo(i->second->server);
+			if (best)
+				AddThisServer(best,list);
+		}
+	}
+	return;
+}
+
+bool DoOneToAllButSenderRaw(std::string data, std::string omit, std::string prefix, irc::string command, std::deque<std::string> &params)
+{
+	TreeServer* omitroute = BestRouteTo(omit);
+	if ((command == "NOTICE") || (command == "PRIVMSG"))
+	{
+		if ((params.size() >= 2) && (*(params[0].c_str()) != '$'))
+		{
+			/* Prefixes */
+			if ((*(params[0].c_str()) == '@') || (*(params[0].c_str()) == '%') || (*(params[0].c_str()) == '+'))
+			{
+				params[0] = params[0].substr(1, params[0].length()-1);
+			}
+			if (*(params[0].c_str()) != '#')
+			{
+				// special routing for private messages/notices
+				userrec* d = Srv->FindNick(params[0]);
+				if (d)
+				{
+					std::deque<std::string> par;
+					par.push_back(params[0]);
+					par.push_back(":"+params[1]);
+					DoOneToOne(prefix,command.c_str(),par,d->server);
+					return true;
+				}
+			}
+			else
+			{
+				log(DEBUG,"Channel privmsg going to chan %s",params[0].c_str());
+				chanrec* c = Srv->FindChannel(params[0]);
+				if (c)
+				{
+					std::deque<TreeServer*> list;
+					GetListOfServersForChannel(c,list);
+					log(DEBUG,"Got a list of %d servers",list.size());
+					unsigned int lsize = list.size();
+					for (unsigned int i = 0; i < lsize; i++)
+					{
+						TreeSocket* Sock = list[i]->GetSocket();
+						if ((Sock) && (list[i]->GetName() != omit) && (omitroute != list[i]))
+						{
+							log(DEBUG,"Writing privmsg to server %s",list[i]->GetName().c_str());
+							Sock->WriteLine(data);
+						}
+					}
+					return true;
+				}
+			}
+		}
+	}
+	unsigned int items = TreeRoot->ChildCount();
+	for (unsigned int x = 0; x < items; x++)
+	{
+		TreeServer* Route = TreeRoot->GetChild(x);
+		if ((Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
+		{
+			TreeSocket* Sock = Route->GetSocket();
+			Sock->WriteLine(data);
+		}
+	}
+	return true;
+}
+
+bool DoOneToAllButSender(std::string prefix, std::string command, std::deque<std::string> &params, std::string omit)
+{
+	TreeServer* omitroute = BestRouteTo(omit);
+	std::string FullLine = ":" + prefix + " " + command;
+	unsigned int words = params.size();
+	for (unsigned int x = 0; x < words; x++)
+	{
+		FullLine = FullLine + " " + params[x];
+	}
+	unsigned int items = TreeRoot->ChildCount();
+	for (unsigned int x = 0; x < items; x++)
+	{
+		TreeServer* Route = TreeRoot->GetChild(x);
+		// Send the line IF:
+		// The route has a socket (its a direct connection)
+		// The route isnt the one to be omitted
+		// The route isnt the path to the one to be omitted
+		if ((Route->GetSocket()) && (Route->GetName() != omit) && (omitroute != Route))
+		{
+			TreeSocket* Sock = Route->GetSocket();
+			Sock->WriteLine(FullLine);
+		}
+	}
+	return true;
+}
+
+bool DoOneToMany(std::string prefix, std::string command, std::deque<std::string> &params)
+{
+	std::string FullLine = ":" + prefix + " " + command;
+	unsigned int words = params.size();
+	for (unsigned int x = 0; x < words; x++)
+	{
+		FullLine = FullLine + " " + params[x];
+	}
+	unsigned int items = TreeRoot->ChildCount();
+	for (unsigned int x = 0; x < items; x++)
+	{
+		TreeServer* Route = TreeRoot->GetChild(x);
+		if (Route->GetSocket())
+		{
+			TreeSocket* Sock = Route->GetSocket();
+			Sock->WriteLine(FullLine);
+		}
+	}
+	return true;
+}
+
+bool DoOneToOne(std::string prefix, std::string command, std::deque<std::string> &params, std::string target)
+{
+	TreeServer* Route = BestRouteTo(target);
+	if (Route)
+	{
+		std::string FullLine = ":" + prefix + " " + command;
+		unsigned int words = params.size();
+		for (unsigned int x = 0; x < words; x++)
+		{
+			FullLine = FullLine + " " + params[x];
+		}
+		if (Route->GetSocket())
+		{
+			TreeSocket* Sock = Route->GetSocket();
+			Sock->WriteLine(FullLine);
+		}
+		return true;
+	}
+	else
+	{
+		return true;
+	}
+}
+
+std::vector<TreeSocket*> Bindings;
+
+void ReadConfiguration(bool rebind)
+{
+	Conf = new ConfigReader;
+	if (rebind)
+	{
+		for (int j =0; j < Conf->Enumerate("bind"); j++)
+		{
+			std::string Type = Conf->ReadValue("bind","type",j);
+			std::string IP = Conf->ReadValue("bind","address",j);
+			long Port = Conf->ReadInteger("bind","port",j,true);
+			if (Type == "servers")
+			{
+				if (IP == "*")
+				{
+					IP = "";
+				}
+				TreeSocket* listener = new TreeSocket(IP.c_str(),Port,true,10);
+				if (listener->GetState() == I_LISTENING)
+				{
+					Srv->AddSocket(listener);
+					Bindings.push_back(listener);
+				}
+				else
+				{
+					log(DEFAULT,"m_spanningtree: Warning: Failed to bind server port %d",Port);
+					listener->Close();
+					delete listener;
+				}
+			}
+		}
+	}
+	FlatLinks = Conf->ReadFlag("options","flatlinks",0);
+	HideULines = Conf->ReadFlag("options","hideulines",0);
+	LinkBlocks.clear();
+	for (int j =0; j < Conf->Enumerate("link"); j++)
+	{
+		Link L;
+		L.Name = (Conf->ReadValue("link","name",j)).c_str();
+		L.IPAddr = Conf->ReadValue("link","ipaddr",j);
+		L.Port = Conf->ReadInteger("link","port",j,true);
+		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.HiddenFromStats = Conf->ReadFlag("link","hidden",j);
+		L.NextConnectTime = time(NULL) + L.AutoConnect;
+		/* Bugfix by brain, do not allow people to enter bad configurations */
+		if ((L.IPAddr != "") && (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.IPAddr == "")
+			{
+				log(DEFAULT,"Invalid configuration for server '%s', IP address not defined!",L.Name.c_str());
+			}
+			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;
+}
+
+
+class ModuleSpanningTree : public Module
+{
+	std::vector<TreeSocket*> Bindings;
+	int line;
+	int NumServers;
+	unsigned int max_local;
+	unsigned int max_global;
+	cmd_rconnect* command_rconnect;
+
+ public:
+
+	ModuleSpanningTree(Server* Me)
+		: Module::Module(Me), max_local(0), max_global(0)
+	{
+		Srv = Me;
+		Bindings.clear();
+
+		// Create the root of the tree
+		TreeRoot = new TreeServer(Srv->GetServerName(),Srv->GetServerDescription());
+
+		ReadConfiguration(true);
+
+		command_rconnect = new cmd_rconnect(this);
+		Srv->AddCommand(command_rconnect);
+	}
+
+	void ShowLinks(TreeServer* Current, userrec* user, int hops)
+	{
+		std::string Parent = TreeRoot->GetName();
+		if (Current->GetParent())
+		{
+			Parent = Current->GetParent()->GetName();
+		}
+		for (unsigned int q = 0; q < Current->ChildCount(); q++)
+		{
+			if ((HideULines) && (Srv->IsUlined(Current->GetChild(q)->GetName())))
+			{
+				if (*user->oper)
+				{
+					 ShowLinks(Current->GetChild(q),user,hops+1);
+				}
+			}
+			else
+			{
+				ShowLinks(Current->GetChild(q),user,hops+1);
+			}
+		}
+		/* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
+		if ((HideULines) && (Srv->IsUlined(Current->GetName())) && (!*user->oper))
+			return;
+		WriteServ(user->fd,"364 %s %s %s :%d %s",user->nick,Current->GetName().c_str(),(FlatLinks && (!*user->oper)) ? Srv->GetServerName().c_str() : Parent.c_str(),(FlatLinks && (!*user->oper)) ? 0 : hops,Current->GetDesc().c_str());
+	}
+
+	int CountLocalServs()
+	{
+		return TreeRoot->ChildCount();
+	}
+
+	int CountServs()
+	{
+		return serverlist.size();
+	}
+
+	void HandleLinks(char** parameters, int pcnt, userrec* user)
+	{
+		ShowLinks(TreeRoot,user,0);
+		WriteServ(user->fd,"365 %s * :End of /LINKS list.",user->nick);
+		return;
+	}
+
+	void HandleLusers(char** parameters, int pcnt, userrec* user)
+	{
+		unsigned int n_users = usercnt();
+
+		/* Only update these when someone wants to see them, more efficient */
+		if ((unsigned int)local_count() > max_local)
+			max_local = local_count();
+		if (n_users > max_global)
+			max_global = n_users;
+
+		WriteServ(user->fd,"251 %s :There are %d users and %d invisible on %d servers",user->nick,n_users-usercount_invisible(),usercount_invisible(),this->CountServs());
+		WriteServ(user->fd,"252 %s %d :operator(s) online",user->nick,usercount_opers());
+		WriteServ(user->fd,"253 %s %d :unknown connections",user->nick,usercount_unknown());
+		WriteServ(user->fd,"254 %s %d :channels formed",user->nick,chancount());
+		WriteServ(user->fd,"254 %s :I have %d clients and %d servers",user->nick,local_count(),this->CountLocalServs());
+		WriteServ(user->fd,"265 %s :Current Local Users: %d  Max: %d",user->nick,local_count(),max_local);
+		WriteServ(user->fd,"266 %s :Current Global Users: %d  Max: %d",user->nick,n_users,max_global);
+		return;
+	}
+
+	// WARNING: NOT THREAD SAFE - DONT GET ANY SMART IDEAS.
+
+	void ShowMap(TreeServer* Current, userrec* user, int depth, char matrix[128][80], float &totusers, float &totservers)
+	{
+		if (line < 128)
+		{
+			for (int t = 0; t < depth; t++)
+			{
+				matrix[line][t] = ' ';
+			}
+
+			// 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);
+			totusers += Current->GetUserCount();
+			totservers++;
+			strlcpy(&matrix[line][depth],text,80);
+			line++;
+			for (unsigned int q = 0; q < Current->ChildCount(); q++)
+			{
+				if ((HideULines) && (Srv->IsUlined(Current->GetChild(q)->GetName())))
+				{
+					if (*user->oper)
+					{
+						ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
+					}
+				}
+				else
+				{
+					ShowMap(Current->GetChild(q),user,(FlatLinks && (!*user->oper)) ? depth : depth+2,matrix,totusers,totservers);
+				}
+			}
+		}
+	}
+
+	// Ok, prepare to be confused.
+	// After much mulling over how to approach this, it struck me that
+	// the 'usual' way of doing a /MAP isnt the best way. Instead of
+	// keeping track of a ton of ascii characters, and line by line
+	// under recursion working out where to place them using multiplications
+	// and divisons, we instead render the map onto a backplane of characters
+	// (a character matrix), then draw the branches as a series of "L" shapes
+	// from the nodes. This is not only friendlier on CPU it uses less stack.
+
+	void HandleMap(char** parameters, int pcnt, userrec* user)
+	{
+		// This array represents a virtual screen which we will
+		// "scratch" draw to, as the console device of an irc
+		// client does not provide for a proper terminal.
+		float totusers = 0;
+		float totservers = 0;
+		char matrix[128][80];
+		for (unsigned int t = 0; t < 128; t++)
+		{
+			matrix[t][0] = '\0';
+		}
+		line = 0;
+		// The only recursive bit is called here.
+		ShowMap(TreeRoot,user,0,matrix,totusers,totservers);
+		// Process each line one by one. The algorithm has a limit of
+		// 128 servers (which is far more than a spanning tree should have
+		// anyway, so we're ok). This limit can be raised simply by making
+		// the character matrix deeper, 128 rows taking 10k of memory.
+		for (int l = 1; l < line; l++)
+		{
+			// scan across the line looking for the start of the
+			// servername (the recursive part of the algorithm has placed
+			// the servers at indented positions depending on what they
+			// are related to)
+			int first_nonspace = 0;
+			while (matrix[l][first_nonspace] == ' ')
+			{
+				first_nonspace++;
+			}
+			first_nonspace--;
+			// Draw the `- (corner) section: this may be overwritten by
+			// another L shape passing along the same vertical pane, becoming
+			// a |- (branch) section instead.
+			matrix[l][first_nonspace] = '-';
+			matrix[l][first_nonspace-1] = '`';
+			int l2 = l - 1;
+			// Draw upwards until we hit the parent server, causing possibly
+			// other corners (`-) to become branches (|-)
+			while ((matrix[l2][first_nonspace-1] == ' ') || (matrix[l2][first_nonspace-1] == '`'))
+			{
+				matrix[l2][first_nonspace-1] = '|';
+				l2--;
+			}
+		}
+		// dump the whole lot to the user. This is the easy bit, honest.
+		for (int t = 0; t < line; t++)
+		{
+			WriteServ(user->fd,"006 %s :%s",user->nick,&matrix[t][0]);
+		}
+		float avg_users = totusers / totservers;
+		WriteServ(user->fd,"270 %s :%.0f server%s and %.0f user%s, average %.2f users per server",user->nick,totservers,(totservers > 1 ? "s" : ""),totusers,(totusers > 1 ? "s" : ""),avg_users);
+	WriteServ(user->fd,"007 %s :End of /MAP",user->nick);
+		return;
+	}
+
+	int HandleSquit(char** parameters, int pcnt, userrec* user)
+	{
+		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));
+				Srv->RemoveSocket(sock);
+			}
+			else
+			{
+				WriteServ(user->fd,"NOTICE %s :*** SQUIT: The server \002%s\002 is not directly connected.",user->nick,parameters[0]);
+			}
+		}
+		else
+		{
+			 WriteServ(user->fd,"NOTICE %s :*** SQUIT: The server \002%s\002 does not exist on the network.",user->nick,parameters[0]);
+		}
+		return 1;
+	}
+
+	int HandleTime(char** parameters, int pcnt, userrec* user)
+	{
+		if ((user->fd > -1) && (pcnt))
+		{
+			TreeServer* found = FindServerMask(parameters[0]);
+			if (found)
+			{
+				// we dont' override for local server
+				if (found == TreeRoot)
+					return 0;
+				
+				std::deque<std::string> params;
+				params.push_back(found->GetName());
+				params.push_back(user->nick);
+				DoOneToOne(Srv->GetServerName(),"TIME",params,found->GetName());
+			}
+			else
+			{
+				WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
+			}
+		}
+		return 1;
+	}
+
+	int HandleRemoteWhois(char** parameters, int pcnt, userrec* user)
+	{
+		if ((user->fd > -1) && (pcnt > 1))
+		{
+			userrec* remote = Srv->FindNick(parameters[1]);
+			if ((remote) && (remote->fd < 0))
+			{
+				std::deque<std::string> params;
+				params.push_back(parameters[1]);
+				DoOneToOne(user->nick,"IDLE",params,remote->server);
+				return 1;
+			}
+			else if (!remote)
+			{
+				WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[1]);
+				WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, parameters[1]);
+				return 1;
+			}
+		}
+		return 0;
+	}
+
+	void DoPingChecks(time_t curtime)
+	{
+		for (unsigned int j = 0; j < TreeRoot->ChildCount(); j++)
+		{
+			TreeServer* serv = TreeRoot->GetChild(j);
+			TreeSocket* sock = serv->GetSocket();
+			if (sock)
+			{
+				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;
+					}
+				}
+			}
+		}
+	}
+
+	void AutoConnectServers(time_t curtime)
+	{
+		for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
+		{
+			if ((x->AutoConnect) && (curtime >= x->NextConnectTime))
+			{
+				log(DEBUG,"Auto-Connecting %s",x->Name.c_str());
+				x->NextConnectTime = curtime + x->AutoConnect;
+				TreeServer* CheckDupe = FindServer(x->Name.c_str());
+				if (!CheckDupe)
+				{
+					// an autoconnected server is not connected. Check if its time to connect it
+					WriteOpers("*** AUTOCONNECT: Auto-connecting server \002%s\002 (%lu seconds until next attempt)",x->Name.c_str(),x->AutoConnect);
+					TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name.c_str());
+					if (newsocket->GetFd() > -1)
+					{
+						Srv->AddSocket(newsocket);
+					}
+					else
+					{
+						WriteOpers("*** AUTOCONNECT: Error autoconnecting \002%s\002: %s.",x->Name.c_str(),strerror(errno));
+						delete newsocket;
+					}
+				}
+			}
+		}
+	}
+
+	int HandleVersion(char** parameters, int pcnt, userrec* user)
+	{
+		// we've already checked if pcnt > 0, so this is safe
+		TreeServer* found = FindServerMask(parameters[0]);
+		if (found)
+		{
+			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
+		{
+			WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
+		}
+		return 1;
+	}
+	
+	int HandleConnect(char** parameters, int pcnt, userrec* user)
+	{
+		for (std::vector<Link>::iterator x = LinkBlocks.begin(); x < LinkBlocks.end(); x++)
+		{
+			if (Srv->MatchText(x->Name.c_str(),parameters[0]))
+			{
+				TreeServer* CheckDupe = FindServer(x->Name.c_str());
+				if (!CheckDupe)
+				{
+					WriteServ(user->fd,"NOTICE %s :*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",user->nick,x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
+					TreeSocket* newsocket = new TreeSocket(x->IPAddr,x->Port,false,10,x->Name.c_str());
+					if (newsocket->GetFd() > -1)
+					{
+						Srv->AddSocket(newsocket);
+					}
+					else
+					{
+						WriteServ(user->fd,"NOTICE %s :*** CONNECT: Error connecting \002%s\002: %s.",user->nick,x->Name.c_str(),strerror(errno));
+						delete newsocket;
+					}
+					return 1;
+				}
+				else
+				{
+					WriteServ(user->fd,"NOTICE %s :*** CONNECT: Server \002%s\002 already exists on the network and is connected via \002%s\002",user->nick,x->Name.c_str(),CheckDupe->GetParent()->GetName().c_str());
+					return 1;
+				}
+			}
+		}
+		WriteServ(user->fd,"NOTICE %s :*** CONNECT: No server matching \002%s\002 could be found in the config file.",user->nick,parameters[0]);
+		return 1;
+	}
+
+	virtual int OnStats(char statschar, userrec* user)
+	{
+		if (statschar == 'c')
+		{
+			for (unsigned int i = 0; i < LinkBlocks.size(); i++)
+			{
+				WriteServ(user->fd,"213 %s C *@%s * %s %d 0 %c%c%c",user->nick,(LinkBlocks[i].HiddenFromStats ? "<hidden>" : 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 %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 0;
+	}
+
+	virtual int OnPreCommand(const 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);
+		}
+		else if (command == "SQUIT")
+		{
+			return this->HandleSquit(parameters,pcnt,user);
+		}
+		else if (command == "MAP")
+		{
+			this->HandleMap(parameters,pcnt,user);
+			return 1;
+		}
+		else if ((command == "TIME") && (pcnt > 0))
+		{
+			return this->HandleTime(parameters,pcnt,user);
+		}
+		else if (command == "LUSERS")
+		{
+			this->HandleLusers(parameters,pcnt,user);
+			return 1;
+		}
+		else if (command == "LINKS")
+		{
+			this->HandleLinks(parameters,pcnt,user);
+			return 1;
+		}
+		else if (command == "WHOIS")
+		{
+			if (pcnt > 1)
+			{
+				// remote whois
+				return this->HandleRemoteWhois(parameters,pcnt,user);
+			}
+		}
+		else if ((command == "VERSION") && (pcnt > 0))
+		{
+			this->HandleVersion(parameters,pcnt,user);
+			return 1;
+		}
+		else if (Srv->IsValidModuleCommand(command, pcnt, user))
+		{
+			// this bit of code cleverly routes all module commands
+			// to all remote severs *automatically* so that modules
+			// can just handle commands locally, without having
+			// to have any special provision in place for remote
+			// commands and linking protocols.
+			std::deque<std::string> params;
+			params.clear();
+			for (int j = 0; j < pcnt; j++)
+			{
+				if (strchr(parameters[j],' '))
+				{
+					params.push_back(":" + std::string(parameters[j]));
+				}
+				else
+				{
+					params.push_back(std::string(parameters[j]));
+				}
+			}
+			log(DEBUG,"Globally route '%s'",command.c_str());
+			DoOneToMany(user->nick,command,params);
+		}
+		return 0;
+	}
+
+	virtual void OnGetServerDescription(const std::string &servername,std::string &description)
+	{
+		TreeServer* s = FindServer(servername);
+		if (s)
+		{
+			description = s->GetDesc();
+		}
+	}
+
+	virtual void OnUserInvite(userrec* source,userrec* dest,chanrec* channel)
+	{
+		if (source->fd > -1)
+		{
+			std::deque<std::string> params;
+			params.push_back(dest->nick);
+			params.push_back(channel->name);
+			DoOneToMany(source->nick,"INVITE",params);
+		}
+	}
+
+	virtual void OnPostLocalTopicChange(userrec* user, chanrec* chan, const std::string &topic)
+	{
+		std::deque<std::string> params;
+		params.push_back(chan->name);
+		params.push_back(":"+topic);
+		DoOneToMany(user->nick,"TOPIC",params);
+	}
+
+	virtual void OnWallops(userrec* user, const std::string &text)
+	{
+		if (user->fd > -1)
+		{
+			std::deque<std::string> params;
+			params.push_back(":"+text);
+			DoOneToMany(user->nick,"WALLOPS",params);
+		}
+	}
+
+	virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status)
+	{
+		if (target_type == TYPE_USER)
+		{
+			userrec* d = (userrec*)dest;
+			if ((d->fd < 0) && (user->fd > -1))
+			{
+				std::deque<std::string> params;
+				params.clear();
+				params.push_back(d->nick);
+				params.push_back(":"+text);
+				DoOneToOne(user->nick,"NOTICE",params,d->server);
+			}
+		}
+		else
+		{
+			if (user->fd > -1)
+			{
+				chanrec *c = (chanrec*)dest;
+				std::string cname = c->name;
+				if (status)
+					cname = status + cname;
+				std::deque<TreeServer*> list;
+				GetListOfServersForChannel(c,list);
+				unsigned int ucount = list.size();
+				for (unsigned int i = 0; i < ucount; i++)
+				{
+					TreeSocket* Sock = list[i]->GetSocket();
+					if (Sock)
+						Sock->WriteLine(":"+std::string(user->nick)+" NOTICE "+cname+" :"+text);
+				}
+			}
+		}
+	}
+
+	virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status)
+	{
+		if (target_type == TYPE_USER)
+		{
+			// route private messages which are targetted at clients only to the server
+			// which needs to receive them
+			userrec* d = (userrec*)dest;
+			if ((d->fd < 0) && (user->fd > -1))
+			{
+				std::deque<std::string> params;
+				params.clear();
+				params.push_back(d->nick);
+				params.push_back(":"+text);
+				DoOneToOne(user->nick,"PRIVMSG",params,d->server);
+			}
+		}
+		else
+		{
+			if (user->fd > -1)
+			{
+				chanrec *c = (chanrec*)dest;
+				std::string cname = c->name;
+				if (status)
+					cname = status + cname;
+				std::deque<TreeServer*> list;
+				GetListOfServersForChannel(c,list);
+				unsigned int ucount = list.size();
+				for (unsigned int i = 0; i < ucount; i++)
+				{
+					TreeSocket* Sock = list[i]->GetSocket();
+					if (Sock)
+						Sock->WriteLine(":"+std::string(user->nick)+" PRIVMSG "+cname+" :"+text);
+				}
+			}
+		}
+	}
+
+	virtual void OnBackgroundTimer(time_t curtime)
+	{
+		AutoConnectServers(curtime);
+		DoPingChecks(curtime);
+	}
+
+	virtual void OnUserJoin(userrec* user, chanrec* channel)
+	{
+		// Only do this for local users
+		if (user->fd > -1)
+		{
+			std::deque<std::string> params;
+			params.clear();
+			params.push_back(channel->name);
+
+			if (channel->GetUserCounter() > 1)
+			{
+				// not the first in the channel
+				DoOneToMany(user->nick,"JOIN",params);
+			}
+			else
+			{
+				// first in the channel, set up their permissions
+				// and the channel TS with FJOIN.
+				char ts[24];
+				snprintf(ts,24,"%lu",(unsigned long)channel->age);
+				params.clear();
+				params.push_back(channel->name);
+				params.push_back(ts);
+				params.push_back("@"+std::string(user->nick));
+				DoOneToMany(Srv->GetServerName(),"FJOIN",params);
+			}
+		}
+	}
+
+	virtual void OnChangeHost(userrec* user, const std::string &newhost)
+	{
+		// only occurs for local clients
+		if (user->registered != 7)
+			return;
+		std::deque<std::string> params;
+		params.push_back(newhost);
+		DoOneToMany(user->nick,"FHOST",params);
+	}
+
+	virtual void OnChangeName(userrec* user, const std::string &gecos)
+	{
+		// only occurs for local clients
+		if (user->registered != 7)
+			return;
+		std::deque<std::string> params;
+		params.push_back(gecos);
+		DoOneToMany(user->nick,"FNAME",params);
+	}
+
+	virtual void OnUserPart(userrec* user, chanrec* channel, const std::string &partmessage)
+	{
+		if (user->fd > -1)
+		{
+			std::deque<std::string> params;
+			params.push_back(channel->name);
+			if (partmessage != "")
+				params.push_back(":"+partmessage);
+			DoOneToMany(user->nick,"PART",params);
+		}
+	}
+
+	virtual void OnUserConnect(userrec* user)
+	{
+		char agestr[MAXBUF];
+		if (user->fd > -1)
+		{
+			std::deque<std::string> params;
+			snprintf(agestr,MAXBUF,"%lu",(unsigned long)user->age);
+			params.push_back(agestr);
+			params.push_back(user->nick);
+			params.push_back(user->host);
+			params.push_back(user->dhost);
+			params.push_back(user->ident);
+			params.push_back("+"+std::string(user->modes));
+			params.push_back((char*)inet_ntoa(user->ip4));
+			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, const std::string &reason)
+	{
+		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, const std::string &oldnick)
+	{
+		if (user->fd > -1)
+		{
+			std::deque<std::string> params;
+			params.push_back(user->nick);
+			DoOneToMany(oldnick,"NICK",params);
+		}
+	}
+
+	virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
+	{
+		if ((source) && (source->fd > -1))
+		{
+			std::deque<std::string> params;
+			params.push_back(chan->name);
+			params.push_back(user->nick);
+			params.push_back(":"+reason);
+			DoOneToMany(source->nick,"KICK",params);
+		}
+		else if (!source)
+		{
+			std::deque<std::string> params;
+			params.push_back(chan->name);
+			params.push_back(user->nick);
+			params.push_back(":"+reason);
+			DoOneToMany(Srv->GetServerName(),"KICK",params);
+		}
+	}
+
+	virtual void OnRemoteKill(userrec* source, userrec* dest, const std::string &reason)
+	{
+		std::deque<std::string> params;
+		params.push_back(dest->nick);
+		params.push_back(":"+reason);
+		DoOneToMany(source->nick,"KILL",params);
+	}
+
+	virtual void OnRehash(const std::string &parameter)
+	{
+		if (parameter != "")
+		{
+			std::deque<std::string> params;
+			params.push_back(parameter);
+			DoOneToMany(Srv->GetServerName(),"REHASH",params);
+			// check for self
+			if (Srv->MatchText(Srv->GetServerName(),parameter))
+			{
+				Srv->SendOpers("*** Remote rehash initiated from server \002"+Srv->GetServerName()+"\002.");
+				Srv->RehashServer();
+			}
+		}
+		ReadConfiguration(false);
+	}
+
+	// note: the protocol does not allow direct umode +o except
+	// via NICK with 8 params. sending OPERTYPE infers +o modechange
+	// locally.
+	virtual void OnOper(userrec* user, const std::string &opertype)
+	{
+		if (user->fd > -1)
+		{
+			std::deque<std::string> params;
+			params.push_back(opertype);
+			DoOneToMany(user->nick,"OPERTYPE",params);
+		}
+	}
+
+	void OnLine(userrec* source, const std::string &host, bool adding, char linetype, long duration, const std::string &reason)
+	{
+		if (source->fd > -1)
+		{
+			char type[8];
+			snprintf(type,8,"%cLINE",linetype);
+			std::string stype = type;
+			if (adding)
+			{
+				char sduration[MAXBUF];
+				snprintf(sduration,MAXBUF,"%ld",duration);
+				std::deque<std::string> params;
+				params.push_back(host);
+				params.push_back(sduration);
+				params.push_back(":"+reason);
+				DoOneToMany(source->nick,stype,params);
+			}
+			else
+			{
+				std::deque<std::string> params;
+				params.push_back(host);
+				DoOneToMany(source->nick,stype,params);
+			}
+		}
+	}
+
+	virtual void OnAddGLine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
+	{
+		OnLine(source,hostmask,true,'G',duration,reason);
+	}
+	
+	virtual void OnAddZLine(long duration, userrec* source, const std::string &reason, const std::string &ipmask)
+	{
+		OnLine(source,ipmask,true,'Z',duration,reason);
+	}
+
+	virtual void OnAddQLine(long duration, userrec* source, const std::string &reason, const std::string &nickmask)
+	{
+		OnLine(source,nickmask,true,'Q',duration,reason);
+	}
+
+	virtual void OnAddELine(long duration, userrec* source, const std::string &reason, const std::string &hostmask)
+	{
+		OnLine(source,hostmask,true,'E',duration,reason);
+	}
+
+	virtual void OnDelGLine(userrec* source, const std::string &hostmask)
+	{
+		OnLine(source,hostmask,false,'G',0,"");
+	}
+
+	virtual void OnDelZLine(userrec* source, const std::string &ipmask)
+	{
+		OnLine(source,ipmask,false,'Z',0,"");
+	}
+
+	virtual void OnDelQLine(userrec* source, const std::string &nickmask)
+	{
+		OnLine(source,nickmask,false,'Q',0,"");
+	}
+
+	virtual void OnDelELine(userrec* source, const std::string &hostmask)
+	{
+		OnLine(source,hostmask,false,'E',0,"");
+	}
+
+	virtual void OnMode(userrec* user, void* dest, int target_type, const std::string &text)
+	{
+		if ((user->fd > -1) && (user->registered == 7))
+		{
+			if (target_type == TYPE_USER)
+			{
+				userrec* u = (userrec*)dest;
+				std::deque<std::string> params;
+				params.push_back(u->nick);
+				params.push_back(text);
+				DoOneToMany(user->nick,"MODE",params);
+			}
+			else
+			{
+				chanrec* c = (chanrec*)dest;
+				std::deque<std::string> params;
+				params.push_back(c->name);
+				params.push_back(text);
+				DoOneToMany(user->nick,"MODE",params);
+			}
+		}
+	}
+
+	virtual void OnSetAway(userrec* user)
+	{
+		if (IS_LOCAL(user))
+		{
+			std::deque<std::string> params;
+			params.push_back(":"+std::string(user->awaymsg));
+			DoOneToMany(user->nick,"AWAY",params);
+		}
+	}
+
+	virtual void OnCancelAway(userrec* user)
+	{
+		if (IS_LOCAL(user))
+		{
+			std::deque<std::string> params;
+			params.clear();
+			DoOneToMany(user->nick,"AWAY",params);
+		}
+	}
+
+	virtual void ProtoSendMode(void* opaque, int target_type, void* target, const std::string &modeline)
+	{
+		TreeSocket* s = (TreeSocket*)opaque;
+		if (target)
+		{
+			if (target_type == TYPE_USER)
+			{
+				userrec* u = (userrec*)target;
+				s->WriteLine(":"+Srv->GetServerName()+" FMODE "+u->nick+" "+modeline);
+			}
+			else
+			{
+				chanrec* c = (chanrec*)target;
+				s->WriteLine(":"+Srv->GetServerName()+" FMODE "+c->name+" "+modeline);
+			}
+		}
+	}
+
+	virtual void ProtoSendMetaData(void* opaque, int target_type, void* target, const std::string &extname, const std::string &extdata)
+	{
+		TreeSocket* s = (TreeSocket*)opaque;
+		if (target)
+		{
+			if (target_type == TYPE_USER)
+			{
+				userrec* u = (userrec*)target;
+				s->WriteLine(":"+Srv->GetServerName()+" METADATA "+u->nick+" "+extname+" :"+extdata);
+			}
+			else if (target_type == TYPE_OTHER)
+			{
+				s->WriteLine(":"+Srv->GetServerName()+" METADATA * "+extname+" :"+extdata);
+			}
+			else if (target_type == TYPE_CHANNEL)
+			{
+				chanrec* c = (chanrec*)target;
+				s->WriteLine(":"+Srv->GetServerName()+" METADATA "+c->name+" "+extname+" :"+extdata);
+			}
+		}
+	}
+
+	virtual void OnEvent(Event* event)
+	{
+		if (event->GetEventID() == "send_metadata")
+		{
+			std::deque<std::string>* params = (std::deque<std::string>*)event->GetData();
+			if (params->size() < 3)
+				return;
+			(*params)[2] = ":" + (*params)[2];
+			DoOneToMany(Srv->GetServerName(),"METADATA",*params);
+		}
+	}
+
+	virtual ~ModuleSpanningTree()
+	{
+	}
+
+	virtual Version GetVersion()
+	{
+		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] = List[I_OnEvent] = List[I_OnSetAway] = List[I_OnCancelAway] = 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;
+	}
+};
+
+
+class ModuleSpanningTreeFactory : public ModuleFactory
+{
+ public:
+	ModuleSpanningTreeFactory()
+	{
+	}
+	
+	~ModuleSpanningTreeFactory()
+	{
+	}
+	
+	virtual Module * CreateModule(Server* Me)
+	{
+		TreeProtocolModule = new ModuleSpanningTree(Me);
+		return TreeProtocolModule;
+	}
+	
+};
+
+
+extern "C" void * init_module( void )
+{
+	return new ModuleSpanningTreeFactory;
+}