From: Jouni Malinen <jouni.malinen@atheros.com>
Date: Wed, 6 Oct 2010 13:46:43 +0000 (+0300)
Subject: Fix wpa_supplicant AP mode with WPS not to crash
X-Git-Url: http://www.project-moonshot.org/gitweb/?p=libeap.git;a=commitdiff_plain;h=0314e26a61bcc18702479119d7568dcda2666167

Fix wpa_supplicant AP mode with WPS not to crash

Commit 3379a3a795803335b3f464f34a15f06843369fb1 added a direct
iface->for_each_interface use without verification whether the
function is available. This works with hostapd, but not
wpa_supplicant (which crashes on segfault).
---

diff --git a/src/ap/wps_hostapd.c b/src/ap/wps_hostapd.c
index 7963d60..0b9c2af 100644
--- a/src/ap/wps_hostapd.c
+++ b/src/ap/wps_hostapd.c
@@ -540,6 +540,8 @@ static int count_interface_cb(struct hostapd_iface *iface, void *ctx)
 static int interface_count(struct hostapd_iface *iface)
 {
 	int count = 0;
+	if (iface->for_each_interface == NULL)
+		return 0;
 	iface->for_each_interface(iface->interfaces, count_interface_cb,
 				  &count);
 	return count;