Apply hostapd WPS commands to all interfaces on concurrent APs

When the same hostapd process is controlling multiple interfaces,
apply WPS commands (push button, add PIN, change AP PIN) to all
interfaces that are configured to use WPS.

src/ap/wps_hostapd.c

@@ -45,6 +45,45 @@ static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr,
 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
 
 
+struct wps_for_each_data {
+	int (*func)(struct hostapd_data *h, void *ctx);
+	void *ctx;
+};
+
+
+static int wps_for_each(struct hostapd_iface *iface, void *ctx)
+{
+	struct wps_for_each_data *data = ctx;
+	size_t j;
+
+	if (iface == NULL)
+		return 0;
+	for (j = 0; j < iface->num_bss; j++) {
+		struct hostapd_data *hapd = iface->bss[j];
+		int ret = data->func(hapd, data->ctx);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+
+static int hostapd_wps_for_each(struct hostapd_data *hapd,
+				int (*func)(struct hostapd_data *h, void *ctx),
+				void *ctx)
+{
+	struct hostapd_iface *iface = hapd->iface;
+	struct wps_for_each_data data;
+	if (iface->for_each_interface == NULL)
+		return -1;
+	data.func = func;
+	data.ctx = ctx;
+	return iface->for_each_interface(iface->interfaces, wps_for_each,
+					 &data);
+}
+
+
 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
 				  size_t psk_len)
 {
@@ -802,30 +841,69 @@ void hostapd_update_wps(struct hostapd_data *hapd)
 }
 
 
+struct wps_add_pin_data {
+	const u8 *addr;
+	const u8 *uuid;
+	const u8 *pin;
+	size_t pin_len;
+	int timeout;
+	int added;
+};
+
+
+static int wps_add_pin(struct hostapd_data *hapd, void *ctx)
+{
+	struct wps_add_pin_data *data = ctx;
+	int ret;
+
+	if (hapd->wps == NULL)
+		return 0;
+	ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr,
+				    data->uuid, data->pin, data->pin_len,
+				    data->timeout);
+	if (ret == 0)
+		data->added++;
+	return ret;
+}
+
+
 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr,
 			const char *uuid, const char *pin, int timeout)
 {
 	u8 u[UUID_LEN];
-	int any = 0;
+	struct wps_add_pin_data data;
+
+	data.addr = addr;
+	data.uuid = u;
+	data.pin = (const u8 *) pin;
+	data.pin_len = os_strlen(pin);
+	data.timeout = timeout;
+	data.added = 0;
 
-	if (hapd->wps == NULL)
-		return -1;
 	if (os_strcmp(uuid, "any") == 0)
-		any = 1;
-	else if (uuid_str2bin(uuid, u))
+		data.uuid = NULL;
+	else {
+		if (uuid_str2bin(uuid, u))
+			return -1;
+		data.uuid = u;
+	}
+	if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0)
 		return -1;
-	return wps_registrar_add_pin(hapd->wps->registrar, addr,
-				     any ? NULL : u,
-				     (const u8 *) pin, os_strlen(pin),
-				     timeout);
+	return data.added ? 0 : -1;
+}
+
+
+static int wps_button_pushed(struct hostapd_data *hapd, void *ctx)
+{
+	if (hapd->wps == NULL)
+		return 0;
+	return wps_registrar_button_pushed(hapd->wps->registrar);
 }
 
 
 int hostapd_wps_button_pushed(struct hostapd_data *hapd)
 {
-	if (hapd->wps == NULL)
-		return -1;
-	return wps_registrar_button_pushed(hapd->wps->registrar);
+	return hostapd_wps_for_each(hapd, wps_button_pushed, NULL);
 }
 
 
@@ -1074,31 +1152,53 @@ static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout)
 }
 
 
-void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd)
+static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx)
 {
-	wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
 	os_free(hapd->conf->ap_pin);
 	hapd->conf->ap_pin = NULL;
 #ifdef CONFIG_WPS_UPNP
 	upnp_wps_set_ap_pin(hapd->wps_upnp, NULL);
 #endif /* CONFIG_WPS_UPNP */
 	eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
+	return 0;
+}
+
+
+void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd)
+{
+	wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
+	hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL);
+}
+
+
+struct wps_ap_pin_data {
+	char pin_txt[9];
+	int timeout;
+};
+
+
+static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx)
+{
+	struct wps_ap_pin_data *data = ctx;
+	os_free(hapd->conf->ap_pin);
+	hapd->conf->ap_pin = os_strdup(data->pin_txt);
+#ifdef CONFIG_WPS_UPNP
+	upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt);
+#endif /* CONFIG_WPS_UPNP */
+	hostapd_wps_ap_pin_enable(hapd, data->timeout);
+	return 0;
 }
 
 
 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout)
 {
 	unsigned int pin;
-	char pin_txt[9];
+	struct wps_ap_pin_data data;
 
 	pin = wps_generate_pin();
-	os_snprintf(pin_txt, sizeof(pin_txt), "%u", pin);
-	os_free(hapd->conf->ap_pin);
-	hapd->conf->ap_pin = os_strdup(pin_txt);
-#ifdef CONFIG_WPS_UPNP
-	upnp_wps_set_ap_pin(hapd->wps_upnp, pin_txt);
-#endif /* CONFIG_WPS_UPNP */
-	hostapd_wps_ap_pin_enable(hapd, timeout);
+	os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%u", pin);
+	data.timeout = timeout;
+	hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
 	return hapd->conf->ap_pin;
 }
 
@@ -1112,13 +1212,12 @@ const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd)
 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin,
 			   int timeout)
 {
-	os_free(hapd->conf->ap_pin);
-	hapd->conf->ap_pin = os_strdup(pin);
-	if (hapd->conf->ap_pin == NULL)
+	struct wps_ap_pin_data data;
+	int ret;
+
+	ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin);
+	if (ret < 0 || ret >= (int) sizeof(data.pin_txt))
 		return -1;
-#ifdef CONFIG_WPS_UPNP
-	upnp_wps_set_ap_pin(hapd->wps_upnp, hapd->conf->ap_pin);
-#endif /* CONFIG_WPS_UPNP */
-	hostapd_wps_ap_pin_enable(hapd, timeout);
-	return 0;
+	data.timeout = timeout;
+	return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
 }