AP: Add callback for STA authorized transitions

Add a callback for station's authorized transitions
to allow wpa_supplicant to emit events in DBus.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

src/ap/hostapd.h

@@ -141,6 +141,10 @@ struct hostapd_data {
 			     union wps_event_data *data);
 	void *wps_event_cb_ctx;
 
+	void (*sta_authorized_cb)(void *ctx, const u8 *mac_addr,
+				  int authorized);
+	void *sta_authorized_cb_ctx;
+
 #ifdef CONFIG_P2P
 	struct p2p_data *p2p;
 	struct p2p_group *p2p_group;

src/ap/sta_info.c

@@ -763,6 +763,10 @@ void ap_sta_set_authorized(struct hostapd_data *hapd, struct sta_info *sta,
 		sta->flags |= WLAN_STA_AUTHORIZED;
 	else
 		sta->flags &= ~WLAN_STA_AUTHORIZED;
+
+	if (hapd->sta_authorized_cb)
+		hapd->sta_authorized_cb(hapd->sta_authorized_cb_ctx,
+					sta->addr, authorized);
 }