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.settings.development;
18
19import android.content.Context;
20import android.hardware.usb.IUsbManager;
21import android.os.RemoteException;
22import android.os.ServiceManager;
23import android.os.SystemProperties;
24import android.os.UserManager;
25import android.support.annotation.VisibleForTesting;
26import android.support.v7.preference.Preference;
27import android.support.v7.preference.PreferenceScreen;
28import android.text.TextUtils;
29import android.util.Log;
30
31import com.android.settings.Utils;
32import com.android.settings.core.PreferenceControllerMixin;
33import com.android.settingslib.development.DeveloperOptionsPreferenceController;
34
35public class ClearAdbKeysPreferenceController extends DeveloperOptionsPreferenceController
36        implements PreferenceControllerMixin {
37
38    private static final String TAG = "ClearAdbPrefCtrl";
39    private static final String CLEAR_ADB_KEYS = "clear_adb_keys";
40
41    @VisibleForTesting
42    static final String RO_ADB_SECURE_PROPERTY_KEY = "ro.adb.secure";
43
44    private final IUsbManager mUsbManager;
45    private final DevelopmentSettingsDashboardFragment mFragment;
46
47    public ClearAdbKeysPreferenceController(Context context,
48            DevelopmentSettingsDashboardFragment fragment) {
49        super(context);
50
51        mFragment = fragment;
52        mUsbManager = IUsbManager.Stub.asInterface(ServiceManager.getService(Context.USB_SERVICE));
53    }
54
55    @Override
56    public boolean isAvailable() {
57        return SystemProperties.getBoolean(RO_ADB_SECURE_PROPERTY_KEY, false /* default */);
58    }
59
60    @Override
61    public String getPreferenceKey() {
62        return CLEAR_ADB_KEYS;
63    }
64
65    @Override
66    public void displayPreference(PreferenceScreen screen) {
67        super.displayPreference(screen);
68
69        if (mPreference != null && !isAdminUser()) {
70            mPreference.setEnabled(false);
71        }
72    }
73
74    @Override
75    public boolean handlePreferenceTreeClick(Preference preference) {
76        if (Utils.isMonkeyRunning()) {
77            return false;
78        }
79
80        if (TextUtils.equals(preference.getKey(), getPreferenceKey())) {
81            ClearAdbKeysWarningDialog.show(mFragment);
82            return true;
83        }
84        return false;
85    }
86
87    @Override
88    protected void onDeveloperOptionsSwitchEnabled() {
89        if (isAdminUser()) {
90            mPreference.setEnabled(true);
91        }
92    }
93
94    public void onClearAdbKeysConfirmed() {
95        try {
96            mUsbManager.clearUsbDebuggingKeys();
97        } catch (RemoteException e) {
98            Log.e(TAG, "Unable to clear adb keys", e);
99        }
100    }
101
102    @VisibleForTesting
103    boolean isAdminUser() {
104        return ((UserManager) mContext.getSystemService(Context.USER_SERVICE)).isAdminUser();
105    }
106}
107