Add a limit of 10 unidentified connections per IP

Everything which isn't a CClient with a successful login counts as an
unidentified connection in this context. Modules who don't want this kind of
limit on their listening sockets can override CSocket::ConnectionFrom(), but
their sockets will still count towards this limit.


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1561 726aef4b-f618-498e-8847-2d620e286838

znc.cpp

@@ -399,6 +399,12 @@ bool CZNC::IsHostAllowed(const CString& sHostMask) const {
 	return false;
 }
 
+bool CZNC::AllowConnectionFrom(const CString& sIP) const {
+	if (GetManager().GetAnonConnectionCount(sIP) >= 10)
+		return false;
+	return true;
+}
+
 void CZNC::InitDirs(const CString& sArgvPath, const CString& sDataDir) {
 	char *home;