From da8a87fcf5b116b120569ffa3d9d93ebc4851232 Mon Sep 17 00:00:00 2001
From: James Prestwood <prestwoj@gmail.com>
Date: Thu, 7 Jul 2022 10:55:03 -0700
Subject: [PATCH] client: check NULL return for DPP cmd_show

If the DPP interface goes away this could return NULL which was
unchecked. Caught by static analysis.
---
 client/dpp.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/client/dpp.c b/client/dpp.c
index cd05a33b..a659f545 100644
--- a/client/dpp.c
+++ b/client/dpp.c
@@ -284,6 +284,11 @@ static enum cmd_status cmd_show(const char *device_name,
 			device_proxy_find(device_name, IWD_DPP_INTERFACE);
 	char *caption = l_strdup_printf("%s: %s", "DPP", device_name);
 
+	if (!proxy) {
+		display("No DPP interface on device: '%s'\n", device_name);
+		return CMD_STATUS_INVALID_VALUE;
+	}
+
 	proxy_properties_display(proxy, caption, MARGIN, 20, 47);
 	l_free(caption);