X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_spanningtree%2Fuid.cpp;h=a3b80457927b5aacd6bce3e416328d34f4a9e5c0;hb=0b63ccd0b5cb26883d6becb196fb98e4f95d0397;hp=79bd6936f625062ba12b34bd18633c66dc95c1de;hpb=f71e6bf9cb41811f18864f5d4eecb26e29d03f25;p=user%2Fhenk%2Fcode%2Finspircd.git

diff --git a/src/modules/m_spanningtree/uid.cpp b/src/modules/m_spanningtree/uid.cpp
index 79bd6936f..a3b804579 100644
--- a/src/modules/m_spanningtree/uid.cpp
+++ b/src/modules/m_spanningtree/uid.cpp
@@ -27,62 +27,59 @@
 
 CmdResult CommandUID::HandleServer(TreeServer* remoteserver, std::vector<std::string>& params)
 {
-	/** Do we have enough parameters:
+	/**
 	 *      0    1    2    3    4    5        6        7     8        9       (n-1)
 	 * UID uuid age nick host dhost ident ip.string signon +modes (modepara) :gecos
 	 */
-	time_t age_t = ConvToInt(params[1]);
-	time_t signon = ConvToInt(params[7]);
+	time_t age_t = ServerCommand::ExtractTS(params[1]);
+	time_t signon = ServerCommand::ExtractTS(params[7]);
 	std::string empty;
 	const std::string& modestr = params[8];
 
-	/* Is this a valid UID, and not misrouted? */
-	if (params[0].length() != UIDGenerator::UUID_LENGTH || params[0].substr(0, 3) != remoteserver->GetID())
-		return CMD_INVALID;
-	/* Check parameters for validity before introducing the client, discovered by dmb */
-	if (!age_t)
-		return CMD_INVALID;
-	if (!signon)
-		return CMD_INVALID;
+	// Check if the length of the uuid is correct and confirm the sid portion of the uuid matches the sid of the server introducing the user
+	if (params[0].length() != UIDGenerator::UUID_LENGTH || params[0].compare(0, 3, remoteserver->GetID()))
+		throw ProtocolException("Bogus UUID");
+	// Sanity check on mode string: must begin with '+'
 	if (modestr[0] != '+')
-		return CMD_INVALID;
+		throw ProtocolException("Invalid mode string");
 
-	/* check for collision */
+	// See if there is a nick collision
 	User* collideswith = ServerInstance->FindNickOnly(params[2]);
-	if (collideswith)
+	if ((collideswith) && (collideswith->registered != REG_ALL))
 	{
-		/*
-		 * Nick collision.
-		 */
-		int collide = Utils->DoCollision(collideswith, remoteserver, age_t, params[5], params[6], params[0]);
-		ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "*** Collision on %s, collide=%d", params[2].c_str(), collide);
-
-		if (collide != 1)
+		// User that the incoming user is colliding with is not fully registered, we force nick change the
+		// unregistered user to their uuid and tell them what happened
+		collideswith->WriteFrom(collideswith, "NICK %s", collideswith->uuid.c_str());
+		collideswith->WriteNumeric(ERR_NICKNAMEINUSE, "%s :Nickname overruled.", collideswith->nick.c_str());
+
+		// Clear the bit before calling User::ChangeNick() to make it NOT run the OnUserPostNick() hook
+		collideswith->registered &= ~REG_NICK;
+		collideswith->ChangeNick(collideswith->uuid);
+	}
+	else if (collideswith)
+	{
+		// The user on this side is registered, handle the collision
+		bool they_change = Utils->DoCollision(collideswith, remoteserver, age_t, params[5], params[6], params[0], "UID");
+		if (they_change)
 		{
-			// Remote client lost, make sure we change their nick for the hash too
+			// The client being introduced needs to change nick to uuid, change the nick in the message before
+			// processing/forwarding it. Also change the nick TS to CommandSave::SavedTimestamp.
+			age_t = CommandSave::SavedTimestamp;
+			params[1] = ConvToStr(CommandSave::SavedTimestamp);
 			params[2] = params[0];
 		}
 	}
 
-	/* IMPORTANT NOTE: For remote users, we pass the UUID in the constructor. This automatically
-	 * sets it up in the UUID hash for us.
+	/* For remote users, we pass the UUID they sent to the constructor.
+	 * If the UUID already exists User::User() throws an exception which causes this connection to be closed.
 	 */
-	User* _new = NULL;
-	try
-	{
-		_new = new RemoteUser(params[0], remoteserver);
-	}
-	catch (...)
-	{
-		ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Duplicate UUID %s in client introduction", params[0].c_str());
-		return CMD_INVALID;
-	}
+	RemoteUser* _new = new RemoteUser(params[0], remoteserver);
 	ServerInstance->Users->clientlist[params[2]] = _new;
 	_new->nick = params[2];
 	_new->host = params[3];
 	_new->dhost = params[4];
 	_new->ident = params[5];
-	_new->fullname = params[params.size() - 1];
+	_new->fullname = params.back();
 	_new->registered = REG_ALL;
 	_new->signon = signon;
 	_new->age = age_t;
@@ -98,15 +95,12 @@ CmdResult CommandUID::HandleServer(TreeServer* remoteserver, std::vector<std::st
 		/* For each mode thats set, find the mode handler and set it on the new user */
 		ModeHandler* mh = ServerInstance->Modes->FindMode(*v, MODETYPE_USER);
 		if (!mh)
-		{
-			ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Unrecognised mode '%c' for a user in UID, dropping link", *v);
-			return CMD_INVALID;
-		}
+			throw ProtocolException("Unrecognised mode '" + std::string(1, *v) + "'");
 
 		if (mh->GetNumParams(true))
 		{
 			if (paramptr >= params.size() - 1)
-				return CMD_INVALID;
+				throw ProtocolException("Out of parameters while processing modes");
 			std::string mp = params[paramptr++];
 			/* IMPORTANT NOTE:
 			 * All modes are assumed to succeed here as they are being set by a remote server.
@@ -131,7 +125,7 @@ CmdResult CommandUID::HandleServer(TreeServer* remoteserver, std::vector<std::st
 
 	bool dosend = true;
 
-	if ((Utils->quiet_bursts && remoteserver->bursting) || _new->server->IsSilentULine())
+	if ((Utils->quiet_bursts && remoteserver->IsBehindBursting()) || _new->server->IsSilentULine())
 		dosend = false;
 
 	if (dosend)