From 2f72f5e0cccdc4838c9e9dad7adacc1fddac397c Mon Sep 17 00:00:00 2001
From: Pierre Pronchery <khorben@defora.org>
Date: Sun, 1 Dec 2013 18:23:30 +0100
Subject: [PATCH] Detect one more potential error case

---
 src/applets/wpa_supplicant.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/applets/wpa_supplicant.c b/src/applets/wpa_supplicant.c
index 5a8f9b7..ea01a9d 100644
--- a/src/applets/wpa_supplicant.c
+++ b/src/applets/wpa_supplicant.c
@@ -329,11 +329,17 @@ static gboolean _start_timeout(gpointer data)
 		return wpa->helper->error(NULL, path, TRUE);
 	}
 	/* create the local socket */
+	memset(&lu, 0, sizeof(lu));
+	if(snprintf(lu.sun_path, sizeof(lu.sun_path), "%s", wpa->path)
+			>= sizeof(lu.sun_path))
+	{
+		unlink(wpa->path);
+		/* XXX make sure this error is explicit enough */
+		return _wpa_error(wpa, wpa->path, TRUE);
+	}
+	lu.sun_family = AF_LOCAL;
 	if((wpa->fd = socket(AF_LOCAL, SOCK_DGRAM, 0)) == -1)
 		return _wpa_error(wpa, "socket", TRUE);
-	memset(&lu, 0, sizeof(lu));
-	snprintf(lu.sun_path, sizeof(lu.sun_path), "%s", wpa->path);
-	lu.sun_family = AF_LOCAL;
 	if(bind(wpa->fd, (struct sockaddr *)&lu, SUN_LEN(&lu)) != 0)
 	{
 		close(wpa->fd);