Svetoslav Ganov | 80943d8 | 2013-01-02 10:25:37 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 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.app; |
| 18 | |
| 19 | import android.accessibilityservice.AccessibilityServiceInfo; |
| 20 | import android.accessibilityservice.IAccessibilityServiceClient; |
| 21 | import android.content.Context; |
| 22 | import android.graphics.Bitmap; |
| 23 | import android.hardware.input.InputManager; |
| 24 | import android.os.Binder; |
| 25 | import android.os.Process; |
| 26 | import android.os.RemoteException; |
| 27 | import android.os.ServiceManager; |
| 28 | import android.view.IWindowManager; |
| 29 | import android.view.InputEvent; |
Mathias Agopian | 3866f0d | 2013-02-11 22:08:48 -0800 | [diff] [blame^] | 30 | import android.view.SurfaceControl; |
Svetoslav Ganov | 80943d8 | 2013-01-02 10:25:37 -0800 | [diff] [blame] | 31 | import android.view.accessibility.AccessibilityEvent; |
| 32 | import android.view.accessibility.IAccessibilityManager; |
| 33 | |
| 34 | /** |
| 35 | * This is a remote object that is passed from the shell to an instrumentation |
| 36 | * for enabling access to privileged operations which the shell can do and the |
| 37 | * instrumentation cannot. These privileged operations are needed for implementing |
| 38 | * a {@link UiAutomation} that enables across application testing by simulating |
| 39 | * user actions and performing screen introspection. |
| 40 | * |
| 41 | * @hide |
| 42 | */ |
| 43 | public final class UiAutomationConnection extends IUiAutomationConnection.Stub { |
| 44 | |
| 45 | private static final int INITIAL_FROZEN_ROTATION_UNSPECIFIED = -1; |
| 46 | |
| 47 | private final IWindowManager mWindowManager = IWindowManager.Stub.asInterface( |
| 48 | ServiceManager.getService(Service.WINDOW_SERVICE)); |
| 49 | |
| 50 | private final Object mLock = new Object(); |
| 51 | |
| 52 | private int mInitialFrozenRotation = INITIAL_FROZEN_ROTATION_UNSPECIFIED; |
| 53 | |
| 54 | private IAccessibilityServiceClient mClient; |
| 55 | |
| 56 | private boolean mIsShutdown; |
| 57 | |
| 58 | private int mOwningUid; |
| 59 | |
| 60 | public void connect(IAccessibilityServiceClient client) { |
| 61 | if (client == null) { |
| 62 | throw new IllegalArgumentException("Client cannot be null!"); |
| 63 | } |
| 64 | synchronized (mLock) { |
| 65 | throwIfShutdownLocked(); |
| 66 | if (isConnectedLocked()) { |
| 67 | throw new IllegalStateException("Already connected."); |
| 68 | } |
| 69 | mOwningUid = Binder.getCallingUid(); |
| 70 | registerUiTestAutomationServiceLocked(client); |
| 71 | storeRotationStateLocked(); |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | @Override |
| 76 | public void disconnect() { |
| 77 | synchronized (mLock) { |
| 78 | throwIfCalledByNotTrustedUidLocked(); |
| 79 | throwIfShutdownLocked(); |
| 80 | if (!isConnectedLocked()) { |
| 81 | throw new IllegalStateException("Already disconnected."); |
| 82 | } |
| 83 | mOwningUid = -1; |
| 84 | unregisterUiTestAutomationServiceLocked(); |
| 85 | restoreRotationStateLocked(); |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | @Override |
| 90 | public boolean injectInputEvent(InputEvent event, boolean sync) { |
| 91 | synchronized (mLock) { |
| 92 | throwIfCalledByNotTrustedUidLocked(); |
| 93 | throwIfShutdownLocked(); |
| 94 | throwIfNotConnectedLocked(); |
| 95 | } |
| 96 | final int mode = (sync) ? InputManager.INJECT_INPUT_EVENT_MODE_WAIT_FOR_FINISH |
| 97 | : InputManager.INJECT_INPUT_EVENT_MODE_ASYNC; |
| 98 | final long identity = Binder.clearCallingIdentity(); |
| 99 | try { |
| 100 | return InputManager.getInstance().injectInputEvent(event, mode); |
| 101 | } finally { |
| 102 | Binder.restoreCallingIdentity(identity); |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | @Override |
| 107 | public boolean setRotation(int rotation) { |
| 108 | synchronized (mLock) { |
| 109 | throwIfCalledByNotTrustedUidLocked(); |
| 110 | throwIfShutdownLocked(); |
| 111 | throwIfNotConnectedLocked(); |
| 112 | } |
| 113 | final long identity = Binder.clearCallingIdentity(); |
| 114 | try { |
| 115 | if (rotation == UiAutomation.ROTATION_UNFREEZE) { |
| 116 | mWindowManager.thawRotation(); |
| 117 | } else { |
| 118 | mWindowManager.freezeRotation(rotation); |
| 119 | } |
| 120 | return true; |
| 121 | } catch (RemoteException re) { |
| 122 | /* ignore */ |
| 123 | } finally { |
| 124 | Binder.restoreCallingIdentity(identity); |
| 125 | } |
| 126 | return false; |
| 127 | } |
| 128 | |
| 129 | @Override |
| 130 | public Bitmap takeScreenshot(int width, int height) { |
| 131 | synchronized (mLock) { |
| 132 | throwIfCalledByNotTrustedUidLocked(); |
| 133 | throwIfShutdownLocked(); |
| 134 | throwIfNotConnectedLocked(); |
| 135 | } |
| 136 | final long identity = Binder.clearCallingIdentity(); |
| 137 | try { |
Mathias Agopian | 3866f0d | 2013-02-11 22:08:48 -0800 | [diff] [blame^] | 138 | return SurfaceControl.screenshot(width, height); |
Svetoslav Ganov | 80943d8 | 2013-01-02 10:25:37 -0800 | [diff] [blame] | 139 | } finally { |
| 140 | Binder.restoreCallingIdentity(identity); |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | @Override |
| 145 | public void shutdown() { |
| 146 | synchronized (mLock) { |
| 147 | throwIfCalledByNotTrustedUidLocked(); |
| 148 | throwIfShutdownLocked(); |
| 149 | mIsShutdown = true; |
| 150 | if (isConnectedLocked()) { |
| 151 | disconnect(); |
| 152 | } |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | private void registerUiTestAutomationServiceLocked(IAccessibilityServiceClient client) { |
| 157 | IAccessibilityManager manager = IAccessibilityManager.Stub.asInterface( |
| 158 | ServiceManager.getService(Context.ACCESSIBILITY_SERVICE)); |
| 159 | AccessibilityServiceInfo info = new AccessibilityServiceInfo(); |
| 160 | info.eventTypes = AccessibilityEvent.TYPES_ALL_MASK; |
| 161 | info.feedbackType = AccessibilityServiceInfo.FEEDBACK_GENERIC; |
| 162 | info.flags |= AccessibilityServiceInfo.FLAG_INCLUDE_NOT_IMPORTANT_VIEWS |
| 163 | | AccessibilityServiceInfo.FLAG_REPORT_VIEW_IDS; |
| 164 | try { |
| 165 | // Calling out with a lock held is fine since if the system |
| 166 | // process is gone the client calling in will be killed. |
| 167 | manager.registerUiTestAutomationService(client, info); |
| 168 | mClient = client; |
| 169 | } catch (RemoteException re) { |
| 170 | throw new IllegalStateException("Error while registering UiTestAutomationService.", re); |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | private void unregisterUiTestAutomationServiceLocked() { |
| 175 | IAccessibilityManager manager = IAccessibilityManager.Stub.asInterface( |
| 176 | ServiceManager.getService(Context.ACCESSIBILITY_SERVICE)); |
| 177 | try { |
| 178 | // Calling out with a lock held is fine since if the system |
| 179 | // process is gone the client calling in will be killed. |
| 180 | manager.unregisterUiTestAutomationService(mClient); |
| 181 | mClient = null; |
| 182 | } catch (RemoteException re) { |
| 183 | throw new IllegalStateException("Error while unregistering UiTestAutomationService", |
| 184 | re); |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | private void storeRotationStateLocked() { |
| 189 | try { |
| 190 | if (mWindowManager.isRotationFrozen()) { |
| 191 | // Calling out with a lock held is fine since if the system |
| 192 | // process is gone the client calling in will be killed. |
| 193 | mInitialFrozenRotation = mWindowManager.getRotation(); |
| 194 | } |
| 195 | } catch (RemoteException re) { |
| 196 | /* ignore */ |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | private void restoreRotationStateLocked() { |
| 201 | try { |
| 202 | if (mInitialFrozenRotation != INITIAL_FROZEN_ROTATION_UNSPECIFIED) { |
| 203 | // Calling out with a lock held is fine since if the system |
| 204 | // process is gone the client calling in will be killed. |
| 205 | mWindowManager.freezeRotation(mInitialFrozenRotation); |
| 206 | } else { |
| 207 | // Calling out with a lock held is fine since if the system |
| 208 | // process is gone the client calling in will be killed. |
| 209 | mWindowManager.thawRotation(); |
| 210 | } |
| 211 | } catch (RemoteException re) { |
| 212 | /* ignore */ |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | private boolean isConnectedLocked() { |
| 217 | return mClient != null; |
| 218 | } |
| 219 | |
| 220 | private void throwIfShutdownLocked() { |
| 221 | if (mIsShutdown) { |
| 222 | throw new IllegalStateException("Connection shutdown!"); |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | private void throwIfNotConnectedLocked() { |
| 227 | if (!isConnectedLocked()) { |
| 228 | throw new IllegalStateException("Not connected!"); |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | private void throwIfCalledByNotTrustedUidLocked() { |
| 233 | final int callingUid = Binder.getCallingUid(); |
| 234 | if (callingUid != mOwningUid && mOwningUid != Process.SYSTEM_UID |
| 235 | && callingUid != 0 /*root*/) { |
| 236 | throw new SecurityException("Calling from not trusted UID!"); |
| 237 | } |
| 238 | } |
| 239 | } |