From 49ed41142c2d166ced74e2e85de52eea414ee7c2 Mon Sep 17 00:00:00 2001
From: Luca Deri <deri@ntop.org>
Date: Sun, 22 Jul 2018 21:06:10 +0200
Subject: Fixed SEGV with undepcified protos

---
 src/lib/ndpi_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
index 5396187cd..d41e775b0 100644
--- a/src/lib/ndpi_main.c
+++ b/src/lib/ndpi_main.c
@@ -2503,7 +2503,7 @@ int ndpi_handle_rule(struct ndpi_detection_module_struct *ndpi_mod,
   }
 
   for(i=0, def = NULL; i<(int)ndpi_mod->ndpi_num_supported_protocols; i++) {
-    if(strcasecmp(ndpi_mod->proto_defaults[i].protoName, proto) == 0) {
+    if(ndpi_mod->proto_defaults[i].protoName && strcasecmp(ndpi_mod->proto_defaults[i].protoName, proto) == 0) {
       def = &ndpi_mod->proto_defaults[i];
       subprotocol_id = i;
       break;
-- 
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