From 053b96458f9a759b44d7e9559db466e2970de8ba Mon Sep 17 00:00:00 2001
From: Victor Julien <victor@inliniac.net>
Date: Sat, 7 Nov 2015 23:50:17 +0100
Subject: [PATCH] commandline: add -i arg check

---
 src/suricata.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/suricata.c b/src/suricata.c
index f25c074d2d..9ca72a4ba6 100644
--- a/src/suricata.c
+++ b/src/suricata.c
@@ -1737,6 +1737,10 @@ static TmEcode ParseCommandLine(int argc, char** argv, SCInstance *suri)
             suri->run_mode = RUNMODE_PRINT_USAGE;
             return TM_ECODE_OK;
         case 'i':
+            if (optarg == NULL) {
+                SCLogError(SC_ERR_INITIALIZATION, "no option argument (optarg) for -i");
+                return TM_ECODE_FAILED;
+            }
 #ifdef HAVE_AF_PACKET
             if (ParseCommandLineAfpacket(suri, optarg) != TM_ECODE_OK) {
                 return TM_ECODE_FAILED;