1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.settingslib.deviceinfo;
18
19import android.annotation.SuppressLint;
20import android.content.Context;
21import android.net.ConnectivityManager;
22import android.net.wifi.WifiInfo;
23import android.net.wifi.WifiManager;
24import android.provider.Settings;
25import android.support.annotation.VisibleForTesting;
26import android.support.v7.preference.Preference;
27import android.support.v7.preference.PreferenceScreen;
28import android.text.TextUtils;
29
30import com.android.settingslib.R;
31import com.android.settingslib.core.lifecycle.Lifecycle;
32
33/**
34 * Preference controller for WIFI MAC address
35 */
36public abstract class AbstractWifiMacAddressPreferenceController
37        extends AbstractConnectivityPreferenceController {
38
39    @VisibleForTesting
40    static final String KEY_WIFI_MAC_ADDRESS = "wifi_mac_address";
41
42    private static final String[] CONNECTIVITY_INTENTS = {
43            ConnectivityManager.CONNECTIVITY_ACTION,
44            WifiManager.LINK_CONFIGURATION_CHANGED_ACTION,
45            WifiManager.NETWORK_STATE_CHANGED_ACTION,
46    };
47
48    private Preference mWifiMacAddress;
49    private final WifiManager mWifiManager;
50
51    public AbstractWifiMacAddressPreferenceController(Context context, Lifecycle lifecycle) {
52        super(context, lifecycle);
53        mWifiManager = context.getSystemService(WifiManager.class);
54    }
55
56    @Override
57    public boolean isAvailable() {
58        return true;
59    }
60
61    @Override
62    public String getPreferenceKey() {
63        return KEY_WIFI_MAC_ADDRESS;
64    }
65
66    @Override
67    public void displayPreference(PreferenceScreen screen) {
68        super.displayPreference(screen);
69        mWifiMacAddress = screen.findPreference(KEY_WIFI_MAC_ADDRESS);
70        updateConnectivity();
71    }
72
73    @Override
74    protected String[] getConnectivityIntents() {
75        return CONNECTIVITY_INTENTS;
76    }
77
78    @SuppressLint("HardwareIds")
79    @Override
80    protected void updateConnectivity() {
81        WifiInfo wifiInfo = mWifiManager.getConnectionInfo();
82        final int macRandomizationMode = Settings.Global.getInt(mContext.getContentResolver(),
83                Settings.Global.WIFI_CONNECTED_MAC_RANDOMIZATION_ENABLED, 0);
84        final String macAddress = wifiInfo == null ? null : wifiInfo.getMacAddress();
85
86        if (TextUtils.isEmpty(macAddress)) {
87            mWifiMacAddress.setSummary(R.string.status_unavailable);
88        } else if (macRandomizationMode == 1 && WifiInfo.DEFAULT_MAC_ADDRESS.equals(macAddress)) {
89            mWifiMacAddress.setSummary(R.string.wifi_status_mac_randomized);
90        } else {
91            mWifiMacAddress.setSummary(macAddress);
92        }
93    }
94}
95