Check for empty prefixes, and close server connections attempting to use them

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@8788 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 8 insertions, 0 deletions

diff --git a/src/modules/m_spanningtree/treesocket2.cpp b/src/modules/m_spanningtree/treesocket2.cpp
index da8af22a0..7c2df1e2a 100644
--- a/src/modules/m_spanningtree/treesocket2.cpp
+++ b/src/modules/m_spanningtree/treesocket2.cpp
@@ -1070,9 +1070,17 @@ bool TreeSocket::ProcessLine(std::string &line)
 	{
 		prefix = params[0].substr(1);
 		params.pop_front();
+		
+		if (prefix.empty())
+		{
+			this->SendError("BUG (??) Empty prefix recieved.");
+			return false;
+		}
 	}
+
 	command = params[0].c_str();
 	params.pop_front();
+
 	switch (this->LinkState)
 	{
 		TreeServer* Node;