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// Copyright 2020 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Package wpasupplicant provides utilities to interact with wpa_supplicant
// via dbus.
package wpasupplicant
import (
const (
dbusBasePath = "/fi/w1/wpa_supplicant1"
dbusBaseInterface = "fi.w1.wpa_supplicant1"
dbusBaseGetIfaceMethod = "GetInterface"
// Supplicant is the object to interact with wpa_supplicant's
// fi.w1.wpa_supplicant1 interface.
type Supplicant struct {
dbus *dbusutil.DBusObject
// NewSupplicant creates a Supplicant object.
func NewSupplicant(ctx context.Context) (*Supplicant, error) {
d, err := dbusutil.NewDBusObject(ctx, dbusBaseInterface, dbusBaseInterface, dbusBasePath)
if err != nil {
return nil, err
return &Supplicant{dbus: d}, nil
// GetInterface calls fi.w1.wpa_supplicant1.GetInterface to get the object path of the
// interface with name and return the Interface object with the object path.
func (s *Supplicant) GetInterface(ctx context.Context, name string) (*Interface, error) {
var path dbus.ObjectPath
if err := s.dbus.Call(ctx, dbusBaseGetIfaceMethod, name).Store(&path); err != nil {
return nil, err
return NewInterface(ctx, path)