client: WSC cancel command

client/device.c

@@ -645,6 +645,20 @@ static const struct command device_commands[] = {
 	{ }
 };
 
+const struct proxy_interface *device_wsc_get(const char *device_name)
+{
+	const struct device *device;
+	const struct proxy_interface *proxy =
+					get_device_proxy_by_name(device_name);
+
+	if (!proxy)
+		return NULL;
+
+	device = proxy_interface_get_data(proxy);
+
+	return device->wsc;
+}
+
 char *device_wsc_family_arg_completion(const char *text, int state)
 {
 	return proxy_property_str_completion(&device_interface_type,

client/device.h

@@ -20,4 +20,6 @@
  *
  */
 
+const struct proxy_interface *device_wsc_get(const char *device_name);
+
 char *device_wsc_family_arg_completion(const char *text, int state);

client/wsc.c

@@ -29,11 +29,18 @@
 #include "command.h"
 #include "dbus-proxy.h"
 #include "device.h"
+#include "display.h"
 
 static struct proxy_interface_type wsc_interface_type = {
 	.interface = IWD_WSC_INTERFACE,
 };
 
+static void check_errors_method_callback(struct l_dbus_message *message,
+								void *user_data)
+{
+	dbus_message_has_error(message);
+}
+
 static enum cmd_status cmd_push_button(const char *device_name, char *args)
 {
 	return CMD_STATUS_UNSUPPORTED;
@@ -51,7 +58,18 @@ static enum cmd_status cmd_start_pin(const char *device_name, char *args)
 
 static enum cmd_status cmd_cancel(const char *device_name, char *args)
 {
-	return CMD_STATUS_UNSUPPORTED;
+	const struct proxy_interface *proxy = device_wsc_get(device_name);
+
+	if (!proxy) {
+		display("Invalid device name '%s'\n", device_name);
+
+		return CMD_STATUS_INVALID_VALUE;
+	}
+
+	proxy_interface_method_call(proxy, "Cancel", "",
+						check_errors_method_callback);
+
+	return CMD_STATUS_OK;
 }
 
 static const struct command wsc_commands[] = {