From 6b78b45b203d0a27767bcfd8752b2b6ee9430761 Mon Sep 17 00:00:00 2001
From: James Lu <james@overdrivenetworks.com>
Date: Sun, 18 Aug 2019 19:51:37 -0700
Subject: [PATCH] ngircd: make linking to non-ngIRCd servers a fatal error

---
 protocols/ngircd.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/protocols/ngircd.py b/protocols/ngircd.py
index 8e0f4c6..1c724e7 100644
--- a/protocols/ngircd.py
+++ b/protocols/ngircd.py
@@ -511,7 +511,8 @@ class NgIRCdProtocol(IRCS2SProtocol):
         if recvpass != self.serverdata['recvpass']:
             raise ProtocolError("RECVPASS from uplink does not match configuration!")
 
-        assert 'IRC+' in args[1], "Linking to non-ngIRCd server using this protocol module is not supported"
+        if 'IRC+' not in args[1]:
+            raise ProtocolError("Linking to non-ngIRCd server using this protocol module is not supported")
 
     def handle_ping(self, source, command, args):
         """