From: Benjamin Aschenbrenner <benjamin.aschenbrenner@gmail.com>
Date: Sat, 10 Apr 2021 11:19:37 +0000 (+0200)
Subject: iw: fix ftm_request missing arguments segfault
X-Git-Tag: v5.16~23
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8fab0c9ee9db217587a58efcc37421c86edcb638;p=thirdparty%2Fiw.git

iw: fix ftm_request missing arguments segfault

When expected argument <config-file> is not passed to arguemts iw
segfaults.

Example: iw wlp2s0 measurement ftm_request

This fixes it.

Signed-off-by: Benjamin Aschenbrenner <benjamin.aschenbrenner@gmail.com>
Link: https://lore.kernel.org/r/20210410111937.32813-2-benjamin.aschenbrenner@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

diff --git a/measurements.c b/measurements.c
index 635d942..80fe785 100644
--- a/measurements.c
+++ b/measurements.c
@@ -282,6 +282,9 @@ static int handle_ftm_req_send(struct nl80211_state *state, struct nl_msg *msg,
 	const char *file;
 	int err;
 
+	if (argc < 1)
+		return HANDLER_RET_USAGE;
+
 	file = argv[0];
 	argc--;
 	argv++;