| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions an |
| * limitations under the License. |
| */ |
| |
| package com.android.server.usb; |
| |
| import android.app.Notification; |
| import android.app.NotificationManager; |
| import android.app.PendingIntent; |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.PackageManager; |
| import android.content.res.Resources; |
| import android.database.ContentObserver; |
| import android.hardware.usb.UsbAccessory; |
| import android.hardware.usb.UsbManager; |
| import android.hardware.usb.UsbPort; |
| import android.hardware.usb.UsbPortStatus; |
| import android.os.FileUtils; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.ParcelFileDescriptor; |
| import android.os.SystemClock; |
| import android.os.SystemProperties; |
| import android.os.UEventObserver; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.os.storage.StorageManager; |
| import android.os.storage.StorageVolume; |
| import android.provider.Settings; |
| import android.util.Pair; |
| import android.util.Slog; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.util.IndentingPrintWriter; |
| import com.android.server.FgThread; |
| |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Map; |
| import java.util.Scanner; |
| |
| /** |
| * UsbDeviceManager manages USB state in device mode. |
| */ |
| public class UsbDeviceManager { |
| |
| private static final String TAG = "UsbDeviceManager"; |
| private static final boolean DEBUG = false; |
| |
| /** |
| * The persistent property which stores whether adb is enabled or not. |
| * May also contain vendor-specific default functions for testing purposes. |
| */ |
| private static final String USB_PERSISTENT_CONFIG_PROPERTY = "persist.sys.usb.config"; |
| |
| /** |
| * The non-persistent property which stores the current USB settings. |
| */ |
| private static final String USB_CONFIG_PROPERTY = "sys.usb.config"; |
| |
| /** |
| * The non-persistent property which stores the current USB actual state. |
| */ |
| private static final String USB_STATE_PROPERTY = "sys.usb.state"; |
| |
| private static final String USB_STATE_MATCH = |
| "DEVPATH=/devices/virtual/android_usb/android0"; |
| private static final String ACCESSORY_START_MATCH = |
| "DEVPATH=/devices/virtual/misc/usb_accessory"; |
| private static final String FUNCTIONS_PATH = |
| "/sys/class/android_usb/android0/functions"; |
| private static final String STATE_PATH = |
| "/sys/class/android_usb/android0/state"; |
| private static final String RNDIS_ETH_ADDR_PATH = |
| "/sys/class/android_usb/android0/f_rndis/ethaddr"; |
| private static final String AUDIO_SOURCE_PCM_PATH = |
| "/sys/class/android_usb/android0/f_audio_source/pcm"; |
| private static final String MIDI_ALSA_PATH = |
| "/sys/class/android_usb/android0/f_midi/alsa"; |
| |
| private static final int MSG_UPDATE_STATE = 0; |
| private static final int MSG_ENABLE_ADB = 1; |
| private static final int MSG_SET_CURRENT_FUNCTIONS = 2; |
| private static final int MSG_SYSTEM_READY = 3; |
| private static final int MSG_BOOT_COMPLETED = 4; |
| private static final int MSG_USER_SWITCHED = 5; |
| private static final int MSG_SET_USB_DATA_UNLOCKED = 6; |
| private static final int MSG_UPDATE_USER_RESTRICTIONS = 7; |
| private static final int MSG_UPDATE_HOST_STATE = 8; |
| |
| private static final int AUDIO_MODE_SOURCE = 1; |
| |
| // Delay for debouncing USB disconnects. |
| // We often get rapid connect/disconnect events when enabling USB functions, |
| // which need debouncing. |
| private static final int UPDATE_DELAY = 1000; |
| |
| // Time we received a request to enter USB accessory mode |
| private long mAccessoryModeRequestTime = 0; |
| |
| // Timeout for entering USB request mode. |
| // Request is cancelled if host does not configure device within 10 seconds. |
| private static final int ACCESSORY_REQUEST_TIMEOUT = 10 * 1000; |
| |
| private static final String BOOT_MODE_PROPERTY = "ro.bootmode"; |
| |
| private UsbHandler mHandler; |
| private boolean mBootCompleted; |
| |
| private final Object mLock = new Object(); |
| |
| private final Context mContext; |
| private final ContentResolver mContentResolver; |
| @GuardedBy("mLock") |
| private UsbSettingsManager mCurrentSettings; |
| private NotificationManager mNotificationManager; |
| private final boolean mHasUsbAccessory; |
| private boolean mUseUsbNotification; |
| private boolean mAdbEnabled; |
| private boolean mAudioSourceEnabled; |
| private boolean mMidiEnabled; |
| private int mMidiCard; |
| private int mMidiDevice; |
| private Map<String, List<Pair<String, String>>> mOemModeMap; |
| private String[] mAccessoryStrings; |
| private UsbDebuggingManager mDebuggingManager; |
| private final UsbAlsaManager mUsbAlsaManager; |
| |
| private class AdbSettingsObserver extends ContentObserver { |
| public AdbSettingsObserver() { |
| super(null); |
| } |
| @Override |
| public void onChange(boolean selfChange) { |
| boolean enable = (Settings.Global.getInt(mContentResolver, |
| Settings.Global.ADB_ENABLED, 0) > 0); |
| mHandler.sendMessage(MSG_ENABLE_ADB, enable); |
| } |
| } |
| |
| /* |
| * Listens for uevent messages from the kernel to monitor the USB state |
| */ |
| private final UEventObserver mUEventObserver = new UEventObserver() { |
| @Override |
| public void onUEvent(UEventObserver.UEvent event) { |
| if (DEBUG) Slog.v(TAG, "USB UEVENT: " + event.toString()); |
| |
| String state = event.get("USB_STATE"); |
| String accessory = event.get("ACCESSORY"); |
| if (state != null) { |
| mHandler.updateState(state); |
| } else if ("START".equals(accessory)) { |
| if (DEBUG) Slog.d(TAG, "got accessory start"); |
| startAccessoryMode(); |
| } |
| } |
| }; |
| |
| private final BroadcastReceiver mHostReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| UsbPort port = intent.getParcelableExtra(UsbManager.EXTRA_PORT); |
| UsbPortStatus status = intent.getParcelableExtra(UsbManager.EXTRA_PORT_STATUS); |
| mHandler.updateHostState(port, status); |
| } |
| }; |
| |
| public UsbDeviceManager(Context context, UsbAlsaManager alsaManager) { |
| mContext = context; |
| mUsbAlsaManager = alsaManager; |
| mContentResolver = context.getContentResolver(); |
| PackageManager pm = mContext.getPackageManager(); |
| mHasUsbAccessory = pm.hasSystemFeature(PackageManager.FEATURE_USB_ACCESSORY); |
| initRndisAddress(); |
| |
| readOemUsbOverrideConfig(); |
| |
| mHandler = new UsbHandler(FgThread.get().getLooper()); |
| |
| if (nativeIsStartRequested()) { |
| if (DEBUG) Slog.d(TAG, "accessory attached at boot"); |
| startAccessoryMode(); |
| } |
| |
| boolean secureAdbEnabled = SystemProperties.getBoolean("ro.adb.secure", false); |
| boolean dataEncrypted = "1".equals(SystemProperties.get("vold.decrypt")); |
| if (secureAdbEnabled && !dataEncrypted) { |
| mDebuggingManager = new UsbDebuggingManager(context); |
| } |
| mContext.registerReceiver(mHostReceiver, |
| new IntentFilter(UsbManager.ACTION_USB_PORT_CHANGED)); |
| } |
| |
| private UsbSettingsManager getCurrentSettings() { |
| synchronized (mLock) { |
| return mCurrentSettings; |
| } |
| } |
| |
| public void systemReady() { |
| if (DEBUG) Slog.d(TAG, "systemReady"); |
| |
| mNotificationManager = (NotificationManager) |
| mContext.getSystemService(Context.NOTIFICATION_SERVICE); |
| |
| // We do not show the USB notification if the primary volume supports mass storage. |
| // The legacy mass storage UI will be used instead. |
| boolean massStorageSupported = false; |
| final StorageManager storageManager = StorageManager.from(mContext); |
| final StorageVolume primary = storageManager.getPrimaryVolume(); |
| massStorageSupported = primary != null && primary.allowMassStorage(); |
| mUseUsbNotification = !massStorageSupported; |
| |
| // make sure the ADB_ENABLED setting value matches the current state |
| try { |
| Settings.Global.putInt(mContentResolver, |
| Settings.Global.ADB_ENABLED, mAdbEnabled ? 1 : 0); |
| } catch (SecurityException e) { |
| // If UserManager.DISALLOW_DEBUGGING_FEATURES is on, that this setting can't be changed. |
| Slog.d(TAG, "ADB_ENABLED is restricted."); |
| } |
| mHandler.sendEmptyMessage(MSG_SYSTEM_READY); |
| } |
| |
| public void bootCompleted() { |
| if (DEBUG) Slog.d(TAG, "boot completed"); |
| mHandler.sendEmptyMessage(MSG_BOOT_COMPLETED); |
| } |
| |
| public void setCurrentUser(int userId, UsbSettingsManager settings) { |
| synchronized (mLock) { |
| mCurrentSettings = settings; |
| mHandler.obtainMessage(MSG_USER_SWITCHED, userId, 0).sendToTarget(); |
| } |
| } |
| |
| public void updateUserRestrictions() { |
| mHandler.sendEmptyMessage(MSG_UPDATE_USER_RESTRICTIONS); |
| } |
| |
| private void startAccessoryMode() { |
| if (!mHasUsbAccessory) return; |
| |
| mAccessoryStrings = nativeGetAccessoryStrings(); |
| boolean enableAudio = (nativeGetAudioMode() == AUDIO_MODE_SOURCE); |
| // don't start accessory mode if our mandatory strings have not been set |
| boolean enableAccessory = (mAccessoryStrings != null && |
| mAccessoryStrings[UsbAccessory.MANUFACTURER_STRING] != null && |
| mAccessoryStrings[UsbAccessory.MODEL_STRING] != null); |
| String functions = null; |
| |
| if (enableAccessory && enableAudio) { |
| functions = UsbManager.USB_FUNCTION_ACCESSORY + "," |
| + UsbManager.USB_FUNCTION_AUDIO_SOURCE; |
| } else if (enableAccessory) { |
| functions = UsbManager.USB_FUNCTION_ACCESSORY; |
| } else if (enableAudio) { |
| functions = UsbManager.USB_FUNCTION_AUDIO_SOURCE; |
| } |
| |
| if (functions != null) { |
| mAccessoryModeRequestTime = SystemClock.elapsedRealtime(); |
| setCurrentFunctions(functions); |
| } |
| } |
| |
| private static void initRndisAddress() { |
| // configure RNDIS ethernet address based on our serial number using the same algorithm |
| // we had been previously using in kernel board files |
| final int ETH_ALEN = 6; |
| int address[] = new int[ETH_ALEN]; |
| // first byte is 0x02 to signify a locally administered address |
| address[0] = 0x02; |
| |
| String serial = SystemProperties.get("ro.serialno", "1234567890ABCDEF"); |
| int serialLength = serial.length(); |
| // XOR the USB serial across the remaining 5 bytes |
| for (int i = 0; i < serialLength; i++) { |
| address[i % (ETH_ALEN - 1) + 1] ^= (int)serial.charAt(i); |
| } |
| String addrString = String.format(Locale.US, "%02X:%02X:%02X:%02X:%02X:%02X", |
| address[0], address[1], address[2], address[3], address[4], address[5]); |
| try { |
| FileUtils.stringToFile(RNDIS_ETH_ADDR_PATH, addrString); |
| } catch (IOException e) { |
| Slog.e(TAG, "failed to write to " + RNDIS_ETH_ADDR_PATH); |
| } |
| } |
| |
| private final class UsbHandler extends Handler { |
| |
| // current USB state |
| private boolean mConnected; |
| private boolean mHostConnected; |
| private boolean mConfigured; |
| private boolean mUsbDataUnlocked; |
| private String mCurrentFunctions; |
| private boolean mCurrentFunctionsApplied; |
| private UsbAccessory mCurrentAccessory; |
| private int mUsbNotificationId; |
| private boolean mAdbNotificationShown; |
| private int mCurrentUser = UserHandle.USER_NULL; |
| |
| public UsbHandler(Looper looper) { |
| super(looper); |
| try { |
| // Restore default functions. |
| mCurrentFunctions = SystemProperties.get(USB_CONFIG_PROPERTY, |
| UsbManager.USB_FUNCTION_NONE); |
| if (UsbManager.USB_FUNCTION_NONE.equals(mCurrentFunctions)) { |
| mCurrentFunctions = UsbManager.USB_FUNCTION_MTP; |
| } |
| mCurrentFunctionsApplied = mCurrentFunctions.equals( |
| SystemProperties.get(USB_STATE_PROPERTY)); |
| mAdbEnabled = UsbManager.containsFunction(getDefaultFunctions(), |
| UsbManager.USB_FUNCTION_ADB); |
| setEnabledFunctions(null, false); |
| |
| String state = FileUtils.readTextFile(new File(STATE_PATH), 0, null).trim(); |
| updateState(state); |
| |
| // register observer to listen for settings changes |
| mContentResolver.registerContentObserver( |
| Settings.Global.getUriFor(Settings.Global.ADB_ENABLED), |
| false, new AdbSettingsObserver()); |
| |
| // Watch for USB configuration changes |
| mUEventObserver.startObserving(USB_STATE_MATCH); |
| mUEventObserver.startObserving(ACCESSORY_START_MATCH); |
| } catch (Exception e) { |
| Slog.e(TAG, "Error initializing UsbHandler", e); |
| } |
| } |
| |
| public void sendMessage(int what, boolean arg) { |
| removeMessages(what); |
| Message m = Message.obtain(this, what); |
| m.arg1 = (arg ? 1 : 0); |
| sendMessage(m); |
| } |
| |
| public void sendMessage(int what, Object arg) { |
| removeMessages(what); |
| Message m = Message.obtain(this, what); |
| m.obj = arg; |
| sendMessage(m); |
| } |
| |
| public void updateState(String state) { |
| int connected, configured; |
| |
| if ("DISCONNECTED".equals(state)) { |
| connected = 0; |
| configured = 0; |
| } else if ("CONNECTED".equals(state)) { |
| connected = 1; |
| configured = 0; |
| } else if ("CONFIGURED".equals(state)) { |
| connected = 1; |
| configured = 1; |
| } else { |
| Slog.e(TAG, "unknown state " + state); |
| return; |
| } |
| removeMessages(MSG_UPDATE_STATE); |
| Message msg = Message.obtain(this, MSG_UPDATE_STATE); |
| msg.arg1 = connected; |
| msg.arg2 = configured; |
| // debounce disconnects to avoid problems bringing up USB tethering |
| sendMessageDelayed(msg, (connected == 0) ? UPDATE_DELAY : 0); |
| } |
| |
| public void updateHostState(UsbPort port, UsbPortStatus status) { |
| boolean hostConnected = status.getCurrentDataRole() == UsbPort.DATA_ROLE_HOST; |
| obtainMessage(MSG_UPDATE_HOST_STATE, hostConnected ? 1 :0, 0).sendToTarget(); |
| } |
| |
| private boolean waitForState(String state) { |
| // wait for the transition to complete. |
| // give up after 1 second. |
| String value = null; |
| for (int i = 0; i < 20; i++) { |
| // State transition is done when sys.usb.state is set to the new configuration |
| value = SystemProperties.get(USB_STATE_PROPERTY); |
| if (state.equals(value)) return true; |
| SystemClock.sleep(50); |
| } |
| Slog.e(TAG, "waitForState(" + state + ") FAILED: got " + value); |
| return false; |
| } |
| |
| private boolean setUsbConfig(String config) { |
| if (DEBUG) Slog.d(TAG, "setUsbConfig(" + config + ")"); |
| // set the new configuration |
| // we always set it due to b/23631400, where adbd was getting killed |
| // and not restarted due to property timeouts on some devices |
| SystemProperties.set(USB_CONFIG_PROPERTY, config); |
| return waitForState(config); |
| } |
| |
| private void setUsbDataUnlocked(boolean enable) { |
| if (DEBUG) Slog.d(TAG, "setUsbDataUnlocked: " + enable); |
| mUsbDataUnlocked = enable; |
| updateUsbNotification(); |
| updateUsbStateBroadcast(); |
| setEnabledFunctions(mCurrentFunctions, true); |
| } |
| |
| private void setAdbEnabled(boolean enable) { |
| if (DEBUG) Slog.d(TAG, "setAdbEnabled: " + enable); |
| if (enable != mAdbEnabled) { |
| mAdbEnabled = enable; |
| |
| // Due to the persist.sys.usb.config property trigger, changing adb state requires |
| // persisting default function |
| String oldFunctions = getDefaultFunctions(); |
| String newFunctions = applyAdbFunction(oldFunctions); |
| if (!oldFunctions.equals(newFunctions)) { |
| SystemProperties.set(USB_PERSISTENT_CONFIG_PROPERTY, newFunctions); |
| } |
| |
| // After persisting them use the lock-down aware function set |
| setEnabledFunctions(mCurrentFunctions, false); |
| updateAdbNotification(); |
| } |
| |
| if (mDebuggingManager != null) { |
| mDebuggingManager.setAdbEnabled(mAdbEnabled); |
| } |
| } |
| |
| /** |
| * Evaluates USB function policies and applies the change accordingly. |
| */ |
| private void setEnabledFunctions(String functions, boolean forceRestart) { |
| if (DEBUG) Slog.d(TAG, "setEnabledFunctions functions=" + functions + ", " |
| + "forceRestart=" + forceRestart); |
| |
| // Try to set the enabled functions. |
| final String oldFunctions = mCurrentFunctions; |
| final boolean oldFunctionsApplied = mCurrentFunctionsApplied; |
| if (trySetEnabledFunctions(functions, forceRestart)) { |
| return; |
| } |
| |
| // Didn't work. Try to revert changes. |
| // We always reapply the policy in case certain constraints changed such as |
| // user restrictions independently of any other new functions we were |
| // trying to activate. |
| if (oldFunctionsApplied && !oldFunctions.equals(functions)) { |
| Slog.e(TAG, "Failsafe 1: Restoring previous USB functions."); |
| if (trySetEnabledFunctions(oldFunctions, false)) { |
| return; |
| } |
| } |
| |
| // Still didn't work. Try to restore the default functions. |
| Slog.e(TAG, "Failsafe 2: Restoring default USB functions."); |
| if (trySetEnabledFunctions(null, false)) { |
| return; |
| } |
| |
| // Now we're desperate. Ignore the default functions. |
| // Try to get ADB working if enabled. |
| Slog.e(TAG, "Failsafe 3: Restoring empty function list (with ADB if enabled)."); |
| if (trySetEnabledFunctions(UsbManager.USB_FUNCTION_NONE, false)) { |
| return; |
| } |
| |
| // Ouch. |
| Slog.e(TAG, "Unable to set any USB functions!"); |
| } |
| |
| private boolean trySetEnabledFunctions(String functions, boolean forceRestart) { |
| if (functions == null) { |
| functions = getDefaultFunctions(); |
| } |
| functions = applyAdbFunction(functions); |
| functions = applyOemOverrideFunction(functions); |
| |
| if (!mCurrentFunctions.equals(functions) || !mCurrentFunctionsApplied |
| || forceRestart) { |
| Slog.i(TAG, "Setting USB config to " + functions); |
| mCurrentFunctions = functions; |
| mCurrentFunctionsApplied = false; |
| |
| // Kick the USB stack to close existing connections. |
| setUsbConfig(UsbManager.USB_FUNCTION_NONE); |
| |
| // Set the new USB configuration. |
| if (!setUsbConfig(functions)) { |
| Slog.e(TAG, "Failed to switch USB config to " + functions); |
| return false; |
| } |
| |
| mCurrentFunctionsApplied = true; |
| } |
| return true; |
| } |
| |
| private String applyAdbFunction(String functions) { |
| if (mAdbEnabled) { |
| functions = UsbManager.addFunction(functions, UsbManager.USB_FUNCTION_ADB); |
| } else { |
| functions = UsbManager.removeFunction(functions, UsbManager.USB_FUNCTION_ADB); |
| } |
| return functions; |
| } |
| |
| private boolean isUsbTransferAllowed() { |
| UserManager userManager = (UserManager) mContext.getSystemService(Context.USER_SERVICE); |
| return !userManager.hasUserRestriction(UserManager.DISALLOW_USB_FILE_TRANSFER); |
| } |
| |
| private void updateCurrentAccessory() { |
| // We are entering accessory mode if we have received a request from the host |
| // and the request has not timed out yet. |
| boolean enteringAccessoryMode = |
| mAccessoryModeRequestTime > 0 && |
| SystemClock.elapsedRealtime() < |
| mAccessoryModeRequestTime + ACCESSORY_REQUEST_TIMEOUT; |
| |
| if (mConfigured && enteringAccessoryMode) { |
| // successfully entered accessory mode |
| |
| if (mAccessoryStrings != null) { |
| mCurrentAccessory = new UsbAccessory(mAccessoryStrings); |
| Slog.d(TAG, "entering USB accessory mode: " + mCurrentAccessory); |
| // defer accessoryAttached if system is not ready |
| if (mBootCompleted) { |
| getCurrentSettings().accessoryAttached(mCurrentAccessory); |
| } // else handle in boot completed |
| } else { |
| Slog.e(TAG, "nativeGetAccessoryStrings failed"); |
| } |
| } else if (!enteringAccessoryMode) { |
| // make sure accessory mode is off |
| // and restore default functions |
| Slog.d(TAG, "exited USB accessory mode"); |
| setEnabledFunctions(null, false); |
| |
| if (mCurrentAccessory != null) { |
| if (mBootCompleted) { |
| getCurrentSettings().accessoryDetached(mCurrentAccessory); |
| } |
| mCurrentAccessory = null; |
| mAccessoryStrings = null; |
| } |
| } |
| } |
| |
| private void updateUsbStateBroadcast() { |
| // send a sticky broadcast containing current USB state |
| Intent intent = new Intent(UsbManager.ACTION_USB_STATE); |
| intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING |
| | Intent.FLAG_RECEIVER_FOREGROUND); |
| intent.putExtra(UsbManager.USB_CONNECTED, mConnected); |
| intent.putExtra(UsbManager.USB_CONFIGURED, mConfigured); |
| intent.putExtra(UsbManager.USB_DATA_UNLOCKED, isUsbTransferAllowed() && mUsbDataUnlocked); |
| |
| if (mCurrentFunctions != null) { |
| String[] functions = mCurrentFunctions.split(","); |
| for (int i = 0; i < functions.length; i++) { |
| intent.putExtra(functions[i], true); |
| } |
| } |
| |
| if (DEBUG) Slog.d(TAG, "broadcasting " + intent + " connected: " + mConnected |
| + " configured: " + mConfigured); |
| mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); |
| } |
| |
| private void updateUsbFunctions() { |
| updateAudioSourceFunction(); |
| updateMidiFunction(); |
| } |
| |
| private void updateAudioSourceFunction() { |
| boolean enabled = UsbManager.containsFunction(mCurrentFunctions, |
| UsbManager.USB_FUNCTION_AUDIO_SOURCE); |
| if (enabled != mAudioSourceEnabled) { |
| int card = -1; |
| int device = -1; |
| |
| if (enabled) { |
| Scanner scanner = null; |
| try { |
| scanner = new Scanner(new File(AUDIO_SOURCE_PCM_PATH)); |
| card = scanner.nextInt(); |
| device = scanner.nextInt(); |
| } catch (FileNotFoundException e) { |
| Slog.e(TAG, "could not open audio source PCM file", e); |
| } finally { |
| if (scanner != null) { |
| scanner.close(); |
| } |
| } |
| } |
| mUsbAlsaManager.setAccessoryAudioState(enabled, card, device); |
| mAudioSourceEnabled = enabled; |
| } |
| } |
| |
| private void updateMidiFunction() { |
| boolean enabled = UsbManager.containsFunction(mCurrentFunctions, |
| UsbManager.USB_FUNCTION_MIDI); |
| if (enabled != mMidiEnabled) { |
| if (enabled) { |
| Scanner scanner = null; |
| try { |
| scanner = new Scanner(new File(MIDI_ALSA_PATH)); |
| mMidiCard = scanner.nextInt(); |
| mMidiDevice = scanner.nextInt(); |
| } catch (FileNotFoundException e) { |
| Slog.e(TAG, "could not open MIDI PCM file", e); |
| enabled = false; |
| } finally { |
| if (scanner != null) { |
| scanner.close(); |
| } |
| } |
| } |
| mMidiEnabled = enabled; |
| } |
| mUsbAlsaManager.setPeripheralMidiState(mMidiEnabled && mConfigured, mMidiCard, mMidiDevice); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_UPDATE_STATE: |
| mConnected = (msg.arg1 == 1); |
| mConfigured = (msg.arg2 == 1); |
| if (!mConnected) { |
| // When a disconnect occurs, relock access to sensitive user data |
| mUsbDataUnlocked = false; |
| } |
| updateUsbNotification(); |
| updateAdbNotification(); |
| if (UsbManager.containsFunction(mCurrentFunctions, |
| UsbManager.USB_FUNCTION_ACCESSORY)) { |
| updateCurrentAccessory(); |
| } else if (!mConnected) { |
| // restore defaults when USB is disconnected |
| setEnabledFunctions(null, false); |
| } |
| if (mBootCompleted) { |
| updateUsbStateBroadcast(); |
| updateUsbFunctions(); |
| } |
| break; |
| case MSG_UPDATE_HOST_STATE: |
| mHostConnected = (msg.arg1 == 1); |
| updateUsbNotification(); |
| break; |
| case MSG_ENABLE_ADB: |
| setAdbEnabled(msg.arg1 == 1); |
| break; |
| case MSG_SET_CURRENT_FUNCTIONS: |
| String functions = (String)msg.obj; |
| setEnabledFunctions(functions, false); |
| break; |
| case MSG_UPDATE_USER_RESTRICTIONS: |
| setEnabledFunctions(mCurrentFunctions, false); |
| break; |
| case MSG_SET_USB_DATA_UNLOCKED: |
| setUsbDataUnlocked(msg.arg1 == 1); |
| break; |
| case MSG_SYSTEM_READY: |
| updateUsbNotification(); |
| updateAdbNotification(); |
| updateUsbStateBroadcast(); |
| updateUsbFunctions(); |
| break; |
| case MSG_BOOT_COMPLETED: |
| mBootCompleted = true; |
| if (mCurrentAccessory != null) { |
| getCurrentSettings().accessoryAttached(mCurrentAccessory); |
| } |
| if (mDebuggingManager != null) { |
| mDebuggingManager.setAdbEnabled(mAdbEnabled); |
| } |
| break; |
| case MSG_USER_SWITCHED: { |
| if (mCurrentUser != msg.arg1) { |
| // Restart the USB stack and re-apply user restrictions for MTP or PTP. |
| final boolean active = UsbManager.containsFunction(mCurrentFunctions, |
| UsbManager.USB_FUNCTION_MTP) |
| || UsbManager.containsFunction(mCurrentFunctions, |
| UsbManager.USB_FUNCTION_PTP); |
| if (active && mCurrentUser != UserHandle.USER_NULL) { |
| Slog.v(TAG, "Current user switched to " + mCurrentUser |
| + "; resetting USB host stack for MTP or PTP"); |
| // avoid leaking sensitive data from previous user |
| mUsbDataUnlocked = false; |
| setEnabledFunctions(mCurrentFunctions, true); |
| } |
| mCurrentUser = msg.arg1; |
| } |
| break; |
| } |
| } |
| } |
| |
| public UsbAccessory getCurrentAccessory() { |
| return mCurrentAccessory; |
| } |
| |
| private void updateUsbNotification() { |
| if (mNotificationManager == null || !mUseUsbNotification) return; |
| int id = 0; |
| Resources r = mContext.getResources(); |
| if (mConnected || mHostConnected) { |
| if (!mUsbDataUnlocked) { |
| id = com.android.internal.R.string.usb_charging_notification_title; |
| } else if (UsbManager.containsFunction(mCurrentFunctions, |
| UsbManager.USB_FUNCTION_MTP)) { |
| id = com.android.internal.R.string.usb_mtp_notification_title; |
| } else if (UsbManager.containsFunction(mCurrentFunctions, |
| UsbManager.USB_FUNCTION_PTP)) { |
| id = com.android.internal.R.string.usb_ptp_notification_title; |
| } else if (UsbManager.containsFunction(mCurrentFunctions, |
| UsbManager.USB_FUNCTION_MIDI)) { |
| id = com.android.internal.R.string.usb_midi_notification_title; |
| } else if (UsbManager.containsFunction(mCurrentFunctions, |
| UsbManager.USB_FUNCTION_ACCESSORY)) { |
| id = com.android.internal.R.string.usb_accessory_notification_title; |
| } else { |
| id = com.android.internal.R.string.usb_charging_notification_title; |
| } |
| } |
| if (id != mUsbNotificationId) { |
| // clear notification if title needs changing |
| if (mUsbNotificationId != 0) { |
| mNotificationManager.cancelAsUser(null, mUsbNotificationId, |
| UserHandle.ALL); |
| mUsbNotificationId = 0; |
| } |
| if (id != 0) { |
| CharSequence message = r.getText( |
| com.android.internal.R.string.usb_notification_message); |
| CharSequence title = r.getText(id); |
| |
| Intent intent = Intent.makeRestartActivityTask( |
| new ComponentName("com.android.settings", |
| "com.android.settings.deviceinfo.UsbModeChooserActivity")); |
| PendingIntent pi = PendingIntent.getActivityAsUser(mContext, 0, |
| intent, 0, null, UserHandle.CURRENT); |
| |
| Notification notification = new Notification.Builder(mContext) |
| .setSmallIcon(com.android.internal.R.drawable.stat_sys_adb) |
| .setWhen(0) |
| .setOngoing(true) |
| .setTicker(title) |
| .setDefaults(0) // please be quiet |
| .setPriority(Notification.PRIORITY_MIN) |
| .setColor(mContext.getColor( |
| com.android.internal.R.color.system_notification_accent_color)) |
| .setContentTitle(title) |
| .setContentText(message) |
| .setContentIntent(pi) |
| .setVisibility(Notification.VISIBILITY_PUBLIC) |
| .build(); |
| mNotificationManager.notifyAsUser(null, id, notification, |
| UserHandle.ALL); |
| mUsbNotificationId = id; |
| } |
| } |
| } |
| |
| private void updateAdbNotification() { |
| if (mNotificationManager == null) return; |
| final int id = com.android.internal.R.string.adb_active_notification_title; |
| if (mAdbEnabled && mConnected) { |
| if ("0".equals(SystemProperties.get("persist.adb.notify"))) return; |
| |
| if (!mAdbNotificationShown) { |
| Resources r = mContext.getResources(); |
| CharSequence title = r.getText(id); |
| CharSequence message = r.getText( |
| com.android.internal.R.string.adb_active_notification_message); |
| |
| Intent intent = Intent.makeRestartActivityTask( |
| new ComponentName("com.android.settings", |
| "com.android.settings.DevelopmentSettings")); |
| PendingIntent pi = PendingIntent.getActivityAsUser(mContext, 0, |
| intent, 0, null, UserHandle.CURRENT); |
| |
| Notification notification = new Notification.Builder(mContext) |
| .setSmallIcon(com.android.internal.R.drawable.stat_sys_adb) |
| .setWhen(0) |
| .setOngoing(true) |
| .setTicker(title) |
| .setDefaults(0) // please be quiet |
| .setPriority(Notification.PRIORITY_LOW) |
| .setColor(mContext.getColor( |
| com.android.internal.R.color.system_notification_accent_color)) |
| .setContentTitle(title) |
| .setContentText(message) |
| .setContentIntent(pi) |
| .setVisibility(Notification.VISIBILITY_PUBLIC) |
| .build(); |
| mAdbNotificationShown = true; |
| mNotificationManager.notifyAsUser(null, id, notification, |
| UserHandle.ALL); |
| } |
| } else if (mAdbNotificationShown) { |
| mAdbNotificationShown = false; |
| mNotificationManager.cancelAsUser(null, id, UserHandle.ALL); |
| } |
| } |
| |
| private String getDefaultFunctions() { |
| String func = SystemProperties.get(USB_PERSISTENT_CONFIG_PROPERTY, |
| UsbManager.USB_FUNCTION_NONE); |
| if (UsbManager.USB_FUNCTION_NONE.equals(func)) { |
| func = UsbManager.USB_FUNCTION_MTP; |
| } |
| return func; |
| } |
| |
| public void dump(IndentingPrintWriter pw) { |
| pw.println("USB Device State:"); |
| pw.println(" mCurrentFunctions: " + mCurrentFunctions); |
| pw.println(" mCurrentFunctionsApplied: " + mCurrentFunctionsApplied); |
| pw.println(" mConnected: " + mConnected); |
| pw.println(" mConfigured: " + mConfigured); |
| pw.println(" mUsbDataUnlocked: " + mUsbDataUnlocked); |
| pw.println(" mCurrentAccessory: " + mCurrentAccessory); |
| try { |
| pw.println(" Kernel state: " |
| + FileUtils.readTextFile(new File(STATE_PATH), 0, null).trim()); |
| pw.println(" Kernel function list: " |
| + FileUtils.readTextFile(new File(FUNCTIONS_PATH), 0, null).trim()); |
| } catch (IOException e) { |
| pw.println("IOException: " + e); |
| } |
| } |
| } |
| |
| /* returns the currently attached USB accessory */ |
| public UsbAccessory getCurrentAccessory() { |
| return mHandler.getCurrentAccessory(); |
| } |
| |
| /* opens the currently attached USB accessory */ |
| public ParcelFileDescriptor openAccessory(UsbAccessory accessory) { |
| UsbAccessory currentAccessory = mHandler.getCurrentAccessory(); |
| if (currentAccessory == null) { |
| throw new IllegalArgumentException("no accessory attached"); |
| } |
| if (!currentAccessory.equals(accessory)) { |
| String error = accessory.toString() |
| + " does not match current accessory " |
| + currentAccessory; |
| throw new IllegalArgumentException(error); |
| } |
| getCurrentSettings().checkPermission(accessory); |
| return nativeOpenAccessory(); |
| } |
| |
| public boolean isFunctionEnabled(String function) { |
| return UsbManager.containsFunction(SystemProperties.get(USB_CONFIG_PROPERTY), function); |
| } |
| |
| public void setCurrentFunctions(String functions) { |
| if (DEBUG) Slog.d(TAG, "setCurrentFunctions(" + functions + ")"); |
| mHandler.sendMessage(MSG_SET_CURRENT_FUNCTIONS, functions); |
| } |
| |
| public void setUsbDataUnlocked(boolean unlocked) { |
| if (DEBUG) Slog.d(TAG, "setUsbDataUnlocked(" + unlocked + ")"); |
| mHandler.sendMessage(MSG_SET_USB_DATA_UNLOCKED, unlocked); |
| } |
| |
| private void readOemUsbOverrideConfig() { |
| String[] configList = mContext.getResources().getStringArray( |
| com.android.internal.R.array.config_oemUsbModeOverride); |
| |
| if (configList != null) { |
| for (String config: configList) { |
| String[] items = config.split(":"); |
| if (items.length == 3) { |
| if (mOemModeMap == null) { |
| mOemModeMap = new HashMap<String, List<Pair<String, String>>>(); |
| } |
| List<Pair<String, String>> overrideList = mOemModeMap.get(items[0]); |
| if (overrideList == null) { |
| overrideList = new LinkedList<Pair<String, String>>(); |
| mOemModeMap.put(items[0], overrideList); |
| } |
| overrideList.add(new Pair<String, String>(items[1], items[2])); |
| } |
| } |
| } |
| } |
| |
| private String applyOemOverrideFunction(String usbFunctions) { |
| if ((usbFunctions == null) || (mOemModeMap == null)) return usbFunctions; |
| |
| String bootMode = SystemProperties.get(BOOT_MODE_PROPERTY, "unknown"); |
| |
| List<Pair<String, String>> overrides = mOemModeMap.get(bootMode); |
| if (overrides != null) { |
| for (Pair<String, String> pair: overrides) { |
| if (pair.first.equals(usbFunctions)) { |
| Slog.d(TAG, "OEM USB override: " + pair.first + " ==> " + pair.second); |
| return pair.second; |
| } |
| } |
| } |
| // return passed in functions as is. |
| return usbFunctions; |
| } |
| |
| public void allowUsbDebugging(boolean alwaysAllow, String publicKey) { |
| if (mDebuggingManager != null) { |
| mDebuggingManager.allowUsbDebugging(alwaysAllow, publicKey); |
| } |
| } |
| |
| public void denyUsbDebugging() { |
| if (mDebuggingManager != null) { |
| mDebuggingManager.denyUsbDebugging(); |
| } |
| } |
| |
| public void clearUsbDebuggingKeys() { |
| if (mDebuggingManager != null) { |
| mDebuggingManager.clearUsbDebuggingKeys(); |
| } else { |
| throw new RuntimeException("Cannot clear Usb Debugging keys, " |
| + "UsbDebuggingManager not enabled"); |
| } |
| } |
| |
| public void dump(IndentingPrintWriter pw) { |
| if (mHandler != null) { |
| mHandler.dump(pw); |
| } |
| if (mDebuggingManager != null) { |
| mDebuggingManager.dump(pw); |
| } |
| } |
| |
| private native String[] nativeGetAccessoryStrings(); |
| private native ParcelFileDescriptor nativeOpenAccessory(); |
| private native boolean nativeIsStartRequested(); |
| private native int nativeGetAudioMode(); |
| } |
