From dc62c529ff4a3e9e876857d3eb357d2a5fa313aa Mon Sep 17 00:00:00 2001
From: w00t <w00t@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Mon, 27 Aug 2007 02:17:48 +0000
Subject: Paranoia: Check for UUID collision on UID reciept, remove both
 clients if a collision occurs.

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@7858 e03df62e-2008-0410-955e-edbf42e46eb7
---
 src/modules/m_spanningtree/treesocket1.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/modules/m_spanningtree/treesocket1.cpp b/src/modules/m_spanningtree/treesocket1.cpp
index 90f6152cd..7b2605254 100644
--- a/src/modules/m_spanningtree/treesocket1.cpp
+++ b/src/modules/m_spanningtree/treesocket1.cpp
@@ -932,6 +932,16 @@ bool TreeSocket::ParseUID(const std::string &source, std::deque<std::string> &pa
 		return true;
 	}
 
+	userrec *u = this->Instance->FindUUID(params[0]);
+
+	if (u)
+	{
+		/* barf! */
+		userrec::QuitUser(this->Instance, u, "UID collision (?!)");
+		this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[0]+" :Invalid client introduction (UID collision (?!))");
+		return true;
+	}
+
 	/* Check parameters for validity before introducing the client, discovered by dmb */
 	if (!age)
 	{
-- 
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