Apply WPS configuration changes to all interfaces that use WPS

When a single hostapd process is controlling multiple interfaces,
apply the received or auto-generated configuration changes to all
interfaces that have enabled WPS.

src/ap/wps_hostapd.c

@@ -239,9 +239,9 @@ static void wps_reload_config(void *eloop_data, void *user_ctx)
 }
 
 
-static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
+static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx)
 {
-	struct hostapd_data *hapd = ctx;
+	const struct wps_credential *cred = ctx;
 	FILE *oconf, *nconf;
 	size_t len, i;
 	char *tmp_fname;
@@ -249,6 +249,9 @@ static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 	int multi_bss;
 	int wpa;
 
+	if (hapd->wps == NULL)
+		return 0;
+
 	wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 			cred->cred_attr, cred->cred_attr_len);
 
@@ -453,14 +456,19 @@ static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 	eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 			       NULL);
 
-	/* TODO: dualband AP may need to update multiple configuration files */
-
 	wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 
 	return 0;
 }
 
 
+static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
+{
+	struct hostapd_data *hapd = ctx;
+	return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred);
+}
+
+
 static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx)
 {
 	struct hostapd_data *hapd = eloop_data;