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 
17 package com.android.settingslib.deviceinfo;
18 
19 import android.annotation.SuppressLint;
20 import android.content.Context;
21 import android.net.ConnectivityManager;
22 import android.net.wifi.WifiInfo;
23 import android.net.wifi.WifiManager;
24 import android.provider.Settings;
25 import android.support.annotation.VisibleForTesting;
26 import android.support.v7.preference.Preference;
27 import android.support.v7.preference.PreferenceScreen;
28 import android.text.TextUtils;
29 
30 import com.android.settingslib.R;
31 import com.android.settingslib.core.lifecycle.Lifecycle;
32 
33 /**
34  * Preference controller for WIFI MAC address
35  */
36 public 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 
AbstractWifiMacAddressPreferenceController(Context context, Lifecycle lifecycle)51     public AbstractWifiMacAddressPreferenceController(Context context, Lifecycle lifecycle) {
52         super(context, lifecycle);
53         mWifiManager = context.getSystemService(WifiManager.class);
54     }
55 
56     @Override
isAvailable()57     public boolean isAvailable() {
58         return true;
59     }
60 
61     @Override
getPreferenceKey()62     public String getPreferenceKey() {
63         return KEY_WIFI_MAC_ADDRESS;
64     }
65 
66     @Override
displayPreference(PreferenceScreen screen)67     public void displayPreference(PreferenceScreen screen) {
68         super.displayPreference(screen);
69         mWifiMacAddress = screen.findPreference(KEY_WIFI_MAC_ADDRESS);
70         updateConnectivity();
71     }
72 
73     @Override
getConnectivityIntents()74     protected String[] getConnectivityIntents() {
75         return CONNECTIVITY_INTENTS;
76     }
77 
78     @SuppressLint("HardwareIds")
79     @Override
updateConnectivity()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