Svet Ganov | ae0e03a | 2016-02-25 18:22:10 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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 android.permissionpresenterservice; |
| 18 | |
| 19 | import android.annotation.SystemApi; |
| 20 | import android.app.Service; |
| 21 | import android.content.Context; |
| 22 | import android.content.Intent; |
| 23 | import android.content.pm.ApplicationInfo; |
| 24 | import android.content.pm.permission.IRuntimePermissionPresenter; |
| 25 | import android.content.pm.permission.RuntimePermissionPresentationInfo; |
| 26 | import android.content.pm.permission.RuntimePermissionPresenter; |
| 27 | import android.os.Bundle; |
| 28 | import android.os.Handler; |
| 29 | import android.os.IBinder; |
| 30 | import android.os.Looper; |
| 31 | import android.os.Message; |
| 32 | import android.os.RemoteCallback; |
| 33 | import com.android.internal.os.SomeArgs; |
| 34 | |
| 35 | import java.util.List; |
| 36 | |
| 37 | /** |
| 38 | * This service presents information regarding runtime permissions that is |
| 39 | * used for presenting them in the UI. Runtime permissions are presented as |
| 40 | * a single permission in the UI but may be composed of several individual |
| 41 | * permissions. |
| 42 | * |
| 43 | * @see RuntimePermissionPresenter |
| 44 | * @see RuntimePermissionPresentationInfo |
| 45 | * |
| 46 | * @hide |
| 47 | */ |
| 48 | @SystemApi |
| 49 | public abstract class RuntimePermissionPresenterService extends Service { |
| 50 | |
| 51 | /** |
| 52 | * The {@link Intent} action that must be declared as handled by a service |
| 53 | * in its manifest for the system to recognize it as a runtime permission |
| 54 | * presenter service. |
| 55 | */ |
| 56 | public static final String SERVICE_INTERFACE = |
| 57 | "android.permissionpresenterservice.RuntimePermissionPresenterService"; |
| 58 | |
| 59 | // No need for locking - always set first and never modified |
| 60 | private Handler mHandler; |
| 61 | |
| 62 | @Override |
| 63 | public final void attachBaseContext(Context base) { |
| 64 | super.attachBaseContext(base); |
| 65 | mHandler = new MyHandler(base.getMainLooper()); |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * Gets the runtime permissions for an app. |
| 70 | * |
| 71 | * @param packageName The package for which to query. |
| 72 | */ |
| 73 | public abstract List<RuntimePermissionPresentationInfo> onGetAppPermissions(String packageName); |
| 74 | |
| 75 | /** |
| 76 | * Gets the apps that use runtime permissions. |
| 77 | * |
| 78 | * @param system Whether to return only the system apps or only the non-system ones. |
| 79 | * @return The app list. |
| 80 | */ |
| 81 | public abstract List<ApplicationInfo> onGetAppsUsingPermissions(boolean system); |
| 82 | |
| 83 | @Override |
| 84 | public final IBinder onBind(Intent intent) { |
| 85 | return new IRuntimePermissionPresenter.Stub() { |
| 86 | @Override |
| 87 | public void getAppPermissions(String packageName, RemoteCallback callback) { |
| 88 | SomeArgs args = SomeArgs.obtain(); |
| 89 | args.arg1 = packageName; |
| 90 | args.arg2 = callback; |
| 91 | mHandler.obtainMessage(MyHandler.MSG_GET_APP_PERMISSIONS, |
| 92 | args).sendToTarget(); |
| 93 | } |
| 94 | |
| 95 | @Override |
| 96 | public void getAppsUsingPermissions(boolean system, RemoteCallback callback) { |
| 97 | mHandler.obtainMessage(MyHandler.MSG_GET_APPS_USING_PERMISSIONS, |
| 98 | system ? 1 : 0, 0, callback).sendToTarget(); |
| 99 | } |
| 100 | }; |
| 101 | } |
| 102 | |
| 103 | private final class MyHandler extends Handler { |
| 104 | public static final int MSG_GET_APP_PERMISSIONS = 1; |
| 105 | public static final int MSG_GET_APPS_USING_PERMISSIONS = 2; |
| 106 | |
| 107 | public MyHandler(Looper looper) { |
| 108 | super(looper, null, false); |
| 109 | } |
| 110 | |
| 111 | @Override |
| 112 | public void handleMessage(Message msg) { |
| 113 | switch (msg.what) { |
| 114 | case MSG_GET_APP_PERMISSIONS: { |
| 115 | SomeArgs args = (SomeArgs) msg.obj; |
| 116 | String packageName = (String) args.arg1; |
| 117 | RemoteCallback callback = (RemoteCallback) args.arg2; |
| 118 | args.recycle(); |
| 119 | List<RuntimePermissionPresentationInfo> permissions = |
| 120 | onGetAppPermissions(packageName); |
| 121 | if (permissions != null && !permissions.isEmpty()) { |
| 122 | Bundle result = new Bundle(); |
| 123 | result.putParcelableList(RuntimePermissionPresenter.KEY_RESULT, |
| 124 | permissions); |
| 125 | callback.sendResult(result); |
| 126 | } else { |
| 127 | callback.sendResult(null); |
| 128 | } |
| 129 | } break; |
| 130 | |
| 131 | case MSG_GET_APPS_USING_PERMISSIONS: { |
| 132 | RemoteCallback callback = (RemoteCallback) msg.obj; |
| 133 | final boolean system = msg.arg1 == 1; |
| 134 | List<ApplicationInfo> apps = onGetAppsUsingPermissions(system); |
| 135 | if (apps != null && !apps.isEmpty()) { |
| 136 | Bundle result = new Bundle(); |
| 137 | result.putParcelableList(RuntimePermissionPresenter.KEY_RESULT, apps); |
| 138 | callback.sendResult(result); |
| 139 | } else { |
| 140 | callback.sendResult(null); |
| 141 | } |
| 142 | } break; |
| 143 | } |
| 144 | } |
| 145 | } |
| 146 | } |