| /* |
| * 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.media.AudioManager; |
| 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.server.FgThread; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.Arrays; |
| 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.class.getSimpleName(); |
| private static final boolean DEBUG = false; |
| |
| 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 MASS_STORAGE_FILE_PATH = |
| "/sys/class/android_usb/android0/f_mass_storage/lun/file"; |
| 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 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 AUDIO_MODE_NONE = 0; |
| 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 Map<String, List<Pair<String, String>>> mOemModeMap; |
| private String[] mAccessoryStrings; |
| private UsbDebuggingManager mDebuggingManager; |
| |
| 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(); |
| } |
| } |
| }; |
| |
| public UsbDeviceManager(Context context) { |
| mContext = context; |
| 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); |
| } |
| } |
| |
| public void setCurrentSettings(UsbSettingsManager settings) { |
| synchronized (mLock) { |
| mCurrentSettings = settings; |
| } |
| } |
| |
| 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); |
| } |
| |
| 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, false); |
| } |
| } |
| |
| 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 static String addFunction(String functions, String function) { |
| if ("none".equals(functions)) { |
| return function; |
| } |
| if (!containsFunction(functions, function)) { |
| if (functions.length() > 0) { |
| functions += ","; |
| } |
| functions += function; |
| } |
| return functions; |
| } |
| |
| private static String removeFunction(String functions, String function) { |
| String[] split = functions.split(","); |
| for (int i = 0; i < split.length; i++) { |
| if (function.equals(split[i])) { |
| split[i] = null; |
| } |
| } |
| if (split.length == 1 && split[0] == null) { |
| return "none"; |
| } |
| StringBuilder builder = new StringBuilder(); |
| for (int i = 0; i < split.length; i++) { |
| String s = split[i]; |
| if (s != null) { |
| if (builder.length() > 0) { |
| builder.append(","); |
| } |
| builder.append(s); |
| } |
| } |
| return builder.toString(); |
| } |
| |
| private static boolean containsFunction(String functions, String function) { |
| return Arrays.asList(functions.split(",")).contains(function); |
| } |
| |
| private final class UsbHandler extends Handler { |
| |
| // current USB state |
| private boolean mConnected; |
| private boolean mConfigured; |
| private String mCurrentFunctions; |
| private String mDefaultFunctions; |
| private UsbAccessory mCurrentAccessory; |
| private int mUsbNotificationId; |
| private boolean mAdbNotificationShown; |
| private int mCurrentUser = UserHandle.USER_NULL; |
| |
| private final BroadcastReceiver mBootCompletedReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (DEBUG) Slog.d(TAG, "boot completed"); |
| mHandler.sendEmptyMessage(MSG_BOOT_COMPLETED); |
| } |
| }; |
| |
| private final BroadcastReceiver mUserSwitchedReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, -1); |
| mHandler.obtainMessage(MSG_USER_SWITCHED, userId, 0).sendToTarget(); |
| } |
| }; |
| |
| public UsbHandler(Looper looper) { |
| super(looper); |
| try { |
| // persist.sys.usb.config should never be unset. But if it is, set it to "adb" |
| // so we have a chance of debugging what happened. |
| mDefaultFunctions = SystemProperties.get("persist.sys.usb.config", "adb"); |
| |
| // Check if USB mode needs to be overridden depending on OEM specific bootmode. |
| mDefaultFunctions = processOemUsbOverride(mDefaultFunctions); |
| |
| // sanity check the sys.usb.config system property |
| // this may be necessary if we crashed while switching USB configurations |
| String config = SystemProperties.get("sys.usb.config", "none"); |
| if (!config.equals(mDefaultFunctions)) { |
| Slog.w(TAG, "resetting config to persistent property: " + mDefaultFunctions); |
| SystemProperties.set("sys.usb.config", mDefaultFunctions); |
| } |
| |
| mCurrentFunctions = getDefaultFunctions(); |
| String state = FileUtils.readTextFile(new File(STATE_PATH), 0, null).trim(); |
| updateState(state); |
| mAdbEnabled = containsFunction(mCurrentFunctions, UsbManager.USB_FUNCTION_ADB); |
| |
| // Upgrade step for previous versions that used persist.service.adb.enable |
| String value = SystemProperties.get("persist.service.adb.enable", ""); |
| if (value.length() > 0) { |
| char enable = value.charAt(0); |
| if (enable == '1') { |
| setAdbEnabled(true); |
| } else if (enable == '0') { |
| setAdbEnabled(false); |
| } |
| SystemProperties.set("persist.service.adb.enable", ""); |
| } |
| |
| // 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); |
| |
| IntentFilter filter = new IntentFilter(Intent.ACTION_BOOT_COMPLETED); |
| filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); |
| mContext.registerReceiver(mBootCompletedReceiver, filter); |
| mContext.registerReceiver( |
| mUserSwitchedReceiver, new IntentFilter(Intent.ACTION_USER_SWITCHED)); |
| } 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 sendMessage(int what, Object arg0, boolean arg1) { |
| removeMessages(what); |
| Message m = Message.obtain(this, what); |
| m.obj = arg0; |
| m.arg1 = (arg1 ? 1 : 0); |
| 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); |
| } |
| |
| private boolean waitForState(String state) { |
| // wait for the transition to complete. |
| // give up after 1 second. |
| for (int i = 0; i < 20; i++) { |
| // State transition is done when sys.usb.state is set to the new configuration |
| if (state.equals(SystemProperties.get("sys.usb.state"))) return true; |
| SystemClock.sleep(50); |
| } |
| Slog.e(TAG, "waitForState(" + state + ") FAILED"); |
| return false; |
| } |
| |
| private boolean setUsbConfig(String config) { |
| if (DEBUG) Slog.d(TAG, "setUsbConfig(" + config + ")"); |
| // set the new configuration |
| SystemProperties.set("sys.usb.config", config); |
| return waitForState(config); |
| } |
| |
| 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 |
| setEnabledFunctions(mDefaultFunctions, true); |
| // After persisting them use the lock-down aware function set |
| setEnabledFunctions(getDefaultFunctions(), false); |
| updateAdbNotification(); |
| } |
| if (mDebuggingManager != null) { |
| mDebuggingManager.setAdbEnabled(mAdbEnabled); |
| } |
| } |
| |
| private void setEnabledFunctions(String functions, boolean makeDefault) { |
| if (DEBUG) Slog.d(TAG, "setEnabledFunctions " + functions |
| + " makeDefault: " + makeDefault); |
| |
| // Do not update persystent.sys.usb.config if the device is booted up |
| // with OEM specific mode. |
| if (functions != null && makeDefault && !needsOemUsbOverride()) { |
| |
| if (mAdbEnabled) { |
| functions = addFunction(functions, UsbManager.USB_FUNCTION_ADB); |
| } else { |
| functions = removeFunction(functions, UsbManager.USB_FUNCTION_ADB); |
| } |
| if (!mDefaultFunctions.equals(functions)) { |
| if (!setUsbConfig("none")) { |
| Slog.e(TAG, "Failed to disable USB"); |
| // revert to previous configuration if we fail |
| setUsbConfig(mCurrentFunctions); |
| return; |
| } |
| // setting this property will also change the current USB state |
| // via a property trigger |
| SystemProperties.set("persist.sys.usb.config", functions); |
| if (waitForState(functions)) { |
| mCurrentFunctions = functions; |
| mDefaultFunctions = functions; |
| } else { |
| Slog.e(TAG, "Failed to switch persistent USB config to " + functions); |
| // revert to previous configuration if we fail |
| SystemProperties.set("persist.sys.usb.config", mDefaultFunctions); |
| } |
| } |
| } else { |
| if (functions == null) { |
| functions = mDefaultFunctions; |
| } |
| |
| // Override with bootmode specific usb mode if needed |
| functions = processOemUsbOverride(functions); |
| |
| if (mAdbEnabled) { |
| functions = addFunction(functions, UsbManager.USB_FUNCTION_ADB); |
| } else { |
| functions = removeFunction(functions, UsbManager.USB_FUNCTION_ADB); |
| } |
| if (!mCurrentFunctions.equals(functions)) { |
| if (!setUsbConfig("none")) { |
| Slog.e(TAG, "Failed to disable USB"); |
| // revert to previous configuration if we fail |
| setUsbConfig(mCurrentFunctions); |
| return; |
| } |
| if (setUsbConfig(functions)) { |
| mCurrentFunctions = functions; |
| } else { |
| Slog.e(TAG, "Failed to switch USB config to " + functions); |
| // revert to previous configuration if we fail |
| setUsbConfig(mCurrentFunctions); |
| } |
| } |
| } |
| } |
| |
| 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 mBootCompletedReceiver |
| } 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(getDefaultFunctions(), false); |
| |
| if (mCurrentAccessory != null) { |
| if (mBootCompleted) { |
| getCurrentSettings().accessoryDetached(mCurrentAccessory); |
| } |
| mCurrentAccessory = null; |
| mAccessoryStrings = null; |
| } |
| } |
| } |
| |
| private void updateUsbState() { |
| // send a sticky broadcast containing current USB state |
| Intent intent = new Intent(UsbManager.ACTION_USB_STATE); |
| intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); |
| intent.putExtra(UsbManager.USB_CONNECTED, mConnected); |
| intent.putExtra(UsbManager.USB_CONFIGURED, mConfigured); |
| |
| 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 updateAudioSourceFunction() { |
| boolean enabled = containsFunction(mCurrentFunctions, |
| UsbManager.USB_FUNCTION_AUDIO_SOURCE); |
| if (enabled != mAudioSourceEnabled) { |
| // send a sticky broadcast containing current USB state |
| Intent intent = new Intent(AudioManager.ACTION_USB_AUDIO_ACCESSORY_PLUG); |
| intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); |
| intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); |
| intent.putExtra("state", (enabled ? 1 : 0)); |
| if (enabled) { |
| Scanner scanner = null; |
| try { |
| scanner = new Scanner(new File(AUDIO_SOURCE_PCM_PATH)); |
| int card = scanner.nextInt(); |
| int device = scanner.nextInt(); |
| intent.putExtra("card", card); |
| intent.putExtra("device", device); |
| } catch (FileNotFoundException e) { |
| Slog.e(TAG, "could not open audio source PCM file", e); |
| } finally { |
| if (scanner != null) { |
| scanner.close(); |
| } |
| } |
| } |
| mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); |
| mAudioSourceEnabled = enabled; |
| } |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_UPDATE_STATE: |
| mConnected = (msg.arg1 == 1); |
| mConfigured = (msg.arg2 == 1); |
| updateUsbNotification(); |
| updateAdbNotification(); |
| if (containsFunction(mCurrentFunctions, |
| UsbManager.USB_FUNCTION_ACCESSORY)) { |
| updateCurrentAccessory(); |
| } else if (!mConnected) { |
| // restore defaults when USB is disconnected |
| setEnabledFunctions(getDefaultFunctions(), false); |
| } |
| if (mBootCompleted) { |
| updateUsbState(); |
| updateAudioSourceFunction(); |
| } |
| break; |
| case MSG_ENABLE_ADB: |
| setAdbEnabled(msg.arg1 == 1); |
| break; |
| case MSG_SET_CURRENT_FUNCTIONS: |
| String functions = (String)msg.obj; |
| boolean makeDefault = (msg.arg1 == 1); |
| setEnabledFunctions(functions, makeDefault); |
| break; |
| case MSG_SYSTEM_READY: |
| updateUsbNotification(); |
| updateAdbNotification(); |
| updateUsbState(); |
| updateAudioSourceFunction(); |
| break; |
| case MSG_BOOT_COMPLETED: |
| mBootCompleted = true; |
| if (mCurrentAccessory != null) { |
| getCurrentSettings().accessoryAttached(mCurrentAccessory); |
| } |
| if (mDebuggingManager != null) { |
| mDebuggingManager.setAdbEnabled(mAdbEnabled); |
| } |
| break; |
| case MSG_USER_SWITCHED: { |
| UserManager userManager = |
| (UserManager) mContext.getSystemService(Context.USER_SERVICE); |
| UserHandle userHandle = new UserHandle(msg.arg1); |
| if (userManager.hasUserRestriction(UserManager.DISALLOW_USB_FILE_TRANSFER, |
| userHandle)) { |
| Slog.v(TAG, "Switched to user " + msg.arg1 + |
| " with DISALLOW_USB_FILE_TRANSFER restriction; disabling USB."); |
| setUsbConfig("none"); |
| mCurrentUser = msg.arg1; |
| break; |
| } |
| |
| final boolean mtpActive = |
| containsFunction(mCurrentFunctions, UsbManager.USB_FUNCTION_MTP) |
| || containsFunction(mCurrentFunctions, UsbManager.USB_FUNCTION_PTP); |
| if (mtpActive && mCurrentUser != UserHandle.USER_NULL) { |
| Slog.v(TAG, "Current user switched; resetting USB host stack for MTP"); |
| setUsbConfig("none"); |
| setUsbConfig(mCurrentFunctions); |
| } |
| 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) { |
| if (containsFunction(mCurrentFunctions, UsbManager.USB_FUNCTION_MTP)) { |
| id = com.android.internal.R.string.usb_mtp_notification_title; |
| } else if (containsFunction(mCurrentFunctions, UsbManager.USB_FUNCTION_PTP)) { |
| id = com.android.internal.R.string.usb_ptp_notification_title; |
| } else if (containsFunction(mCurrentFunctions, |
| UsbManager.USB_FUNCTION_MASS_STORAGE)) { |
| id = com.android.internal.R.string.usb_cd_installer_notification_title; |
| } else if (containsFunction(mCurrentFunctions, UsbManager.USB_FUNCTION_ACCESSORY)) { |
| id = com.android.internal.R.string.usb_accessory_notification_title; |
| } else { |
| // There is a different notification for USB tethering so we don't need one here |
| //if (!containsFunction(mCurrentFunctions, UsbManager.USB_FUNCTION_RNDIS)) { |
| // Slog.e(TAG, "No known USB function in updateUsbNotification"); |
| //} |
| } |
| } |
| 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); |
| |
| Notification notification = new Notification(); |
| notification.icon = com.android.internal.R.drawable.stat_sys_data_usb; |
| notification.when = 0; |
| notification.flags = Notification.FLAG_ONGOING_EVENT; |
| notification.tickerText = title; |
| notification.defaults = 0; // please be quiet |
| notification.sound = null; |
| notification.vibrate = null; |
| notification.priority = Notification.PRIORITY_MIN; |
| |
| Intent intent = Intent.makeRestartActivityTask( |
| new ComponentName("com.android.settings", |
| "com.android.settings.UsbSettings")); |
| PendingIntent pi = PendingIntent.getActivityAsUser(mContext, 0, |
| intent, 0, null, UserHandle.CURRENT); |
| notification.color = mContext.getResources().getColor( |
| com.android.internal.R.color.system_notification_accent_color); |
| notification.setLatestEventInfo(mContext, title, message, pi); |
| notification.visibility = Notification.VISIBILITY_PUBLIC; |
| 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); |
| |
| Notification notification = new Notification(); |
| notification.icon = com.android.internal.R.drawable.stat_sys_adb; |
| notification.when = 0; |
| notification.flags = Notification.FLAG_ONGOING_EVENT; |
| notification.tickerText = title; |
| notification.defaults = 0; // please be quiet |
| notification.sound = null; |
| notification.vibrate = null; |
| notification.priority = Notification.PRIORITY_LOW; |
| |
| 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.color = mContext.getResources().getColor( |
| com.android.internal.R.color.system_notification_accent_color); |
| notification.setLatestEventInfo(mContext, title, message, pi); |
| notification.visibility = Notification.VISIBILITY_PUBLIC; |
| mAdbNotificationShown = true; |
| mNotificationManager.notifyAsUser(null, id, notification, |
| UserHandle.ALL); |
| } |
| } else if (mAdbNotificationShown) { |
| mAdbNotificationShown = false; |
| mNotificationManager.cancelAsUser(null, id, UserHandle.ALL); |
| } |
| } |
| |
| private String getDefaultFunctions() { |
| UserManager userManager = (UserManager) mContext.getSystemService(Context.USER_SERVICE); |
| if (userManager.hasUserRestriction(UserManager.DISALLOW_USB_FILE_TRANSFER, |
| new UserHandle(mCurrentUser))) { |
| return "none"; |
| } |
| return mDefaultFunctions; |
| } |
| |
| public void dump(FileDescriptor fd, PrintWriter pw) { |
| pw.println(" USB Device State:"); |
| pw.println(" Current Functions: " + mCurrentFunctions); |
| pw.println(" Default Functions: " + mDefaultFunctions); |
| pw.println(" mConnected: " + mConnected); |
| pw.println(" mConfigured: " + mConfigured); |
| 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()); |
| pw.println(" Mass storage backing file: " |
| + FileUtils.readTextFile(new File(MASS_STORAGE_FILE_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 void setCurrentFunctions(String functions, boolean makeDefault) { |
| if (DEBUG) Slog.d(TAG, "setCurrentFunctions(" + functions + ") default: " + makeDefault); |
| mHandler.sendMessage(MSG_SET_CURRENT_FUNCTIONS, functions, makeDefault); |
| } |
| |
| public void setMassStorageBackingFile(String path) { |
| if (path == null) path = ""; |
| try { |
| FileUtils.stringToFile(MASS_STORAGE_FILE_PATH, path); |
| } catch (IOException e) { |
| Slog.e(TAG, "failed to write to " + MASS_STORAGE_FILE_PATH); |
| } |
| } |
| |
| 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 boolean needsOemUsbOverride() { |
| if (mOemModeMap == null) return false; |
| |
| String bootMode = SystemProperties.get(BOOT_MODE_PROPERTY, "unknown"); |
| return (mOemModeMap.get(bootMode) != null) ? true : false; |
| } |
| |
| private String processOemUsbOverride(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(FileDescriptor fd, PrintWriter pw) { |
| if (mHandler != null) { |
| mHandler.dump(fd, pw); |
| } |
| if (mDebuggingManager != null) { |
| mDebuggingManager.dump(fd, pw); |
| } |
| } |
| |
| private native String[] nativeGetAccessoryStrings(); |
| private native ParcelFileDescriptor nativeOpenAccessory(); |
| private native boolean nativeIsStartRequested(); |
| private native int nativeGetAudioMode(); |
| } |
