Separate Usb permissions from Usb settings (e05005b1) · Commits · e / os / android_frameworks_base

services/usb/java/com/android/server/usb/UsbDeviceManager.java

+14 −14

Original line number	Diff line number	Diff line
		@@ -250,7 +250,7 @@ public class UsbDeviceManager implements ActivityTaskManagerInternal.ScreenObser
		}

		public UsbDeviceManager(Context context, UsbAlsaManager alsaManager,
		UsbSettingsManager settingsManager) {
		UsbSettingsManager settingsManager, UsbPermissionManager permissionManager) {
		mContext = context;
		mContentResolver = context.getContentResolver();
		PackageManager pm = mContext.getPackageManager();
		@@ -284,13 +284,13 @@ public class UsbDeviceManager implements ActivityTaskManagerInternal.ScreenObser
		* Initialze the legacy UsbHandler
		*/
		mHandler = new UsbHandlerLegacy(FgThread.get().getLooper(), mContext, this,
		alsaManager, settingsManager);
		alsaManager, permissionManager);
		} else {
		/**
		* Initialize HAL based UsbHandler
		*/
		mHandler = new UsbHandlerHal(FgThread.get().getLooper(), mContext, this,
		alsaManager, settingsManager);
		alsaManager, permissionManager);
		}

		if (nativeIsStartRequested()) {
		@@ -468,7 +468,7 @@ public class UsbDeviceManager implements ActivityTaskManagerInternal.ScreenObser

		private final Context mContext;
		private final UsbAlsaManager mUsbAlsaManager;
		private final UsbSettingsManager mSettingsManager;
		private final UsbPermissionManager mPermissionManager;
		private NotificationManager mNotificationManager;

		protected long mScreenUnlockedFunctions;
		@@ -489,12 +489,12 @@ public class UsbDeviceManager implements ActivityTaskManagerInternal.ScreenObser
		protected static final String USB_PERSISTENT_CONFIG_PROPERTY = "persist.sys.usb.config";

		UsbHandler(Looper looper, Context context, UsbDeviceManager deviceManager,
		UsbAlsaManager alsaManager, UsbSettingsManager settingsManager) {
		UsbAlsaManager alsaManager, UsbPermissionManager permissionManager) {
		super(looper);
		mContext = context;
		mUsbDeviceManager = deviceManager;
		mUsbAlsaManager = alsaManager;
		mSettingsManager = settingsManager;
		mPermissionManager = permissionManager;
		mContentResolver = context.getContentResolver();

		mCurrentUser = ActivityManager.getCurrentUser();
		@@ -625,7 +625,7 @@ public class UsbDeviceManager implements ActivityTaskManagerInternal.ScreenObser
		// successfully entered accessory mode
		String[] accessoryStrings = mUsbDeviceManager.getAccessoryStrings();
		if (accessoryStrings != null) {
		UsbSerialReader serialReader = new UsbSerialReader(mContext, mSettingsManager,
		UsbSerialReader serialReader = new UsbSerialReader(mContext, mPermissionManager,
		accessoryStrings[UsbAccessory.SERIAL_STRING]);

		mCurrentAccessory = new UsbAccessory(
		@@ -663,7 +663,7 @@ public class UsbDeviceManager implements ActivityTaskManagerInternal.ScreenObser

		if (mCurrentAccessory != null) {
		if (mBootCompleted) {
		mSettingsManager.usbAccessoryRemoved(mCurrentAccessory);
		mPermissionManager.usbAccessoryRemoved(mCurrentAccessory);
		}
		mCurrentAccessory = null;
		}
		@@ -1343,8 +1343,8 @@ public class UsbDeviceManager implements ActivityTaskManagerInternal.ScreenObser
		private boolean mUsbDataUnlocked;

		UsbHandlerLegacy(Looper looper, Context context, UsbDeviceManager deviceManager,
		UsbAlsaManager alsaManager, UsbSettingsManager settingsManager) {
		super(looper, context, deviceManager, alsaManager, settingsManager);
		UsbAlsaManager alsaManager, UsbPermissionManager permissionManager) {
		super(looper, context, deviceManager, alsaManager, permissionManager);
		try {
		readOemUsbOverrideConfig(context);
		// Restore default functions.
		@@ -1738,8 +1738,8 @@ public class UsbDeviceManager implements ActivityTaskManagerInternal.ScreenObser
		protected boolean mCurrentUsbFunctionsRequested;

		UsbHandlerHal(Looper looper, Context context, UsbDeviceManager deviceManager,
		UsbAlsaManager alsaManager, UsbSettingsManager settingsManager) {
		super(looper, context, deviceManager, alsaManager, settingsManager);
		UsbAlsaManager alsaManager, UsbPermissionManager permissionManager) {
		super(looper, context, deviceManager, alsaManager, permissionManager);
		try {
		ServiceNotification serviceNotification = new ServiceNotification();

		@@ -1977,7 +1977,7 @@ public class UsbDeviceManager implements ActivityTaskManagerInternal.ScreenObser
		* @param uid Uid of the caller
		*/
		public ParcelFileDescriptor openAccessory(UsbAccessory accessory,
		UsbUserSettingsManager settings, int uid) {
		UsbUserPermissionManager permissions, int uid) {
		UsbAccessory currentAccessory = mHandler.getCurrentAccessory();
		if (currentAccessory == null) {
		throw new IllegalArgumentException("no accessory attached");
		@@ -1988,7 +1988,7 @@ public class UsbDeviceManager implements ActivityTaskManagerInternal.ScreenObser
		+ currentAccessory;
		throw new IllegalArgumentException(error);
		}
		settings.checkPermission(accessory, uid);
		permissions.checkPermission(accessory, uid);
		return nativeOpenAccessory();
		}

services/usb/java/com/android/server/usb/UsbHostManager.java

+12 −10

Original line number	Diff line number	Diff line
		@@ -65,7 +65,7 @@ public class UsbHostManager {
		private final String[] mHostBlacklist;

		private final UsbAlsaManager mUsbAlsaManager;
		private final UsbSettingsManager mSettingsManager;
		private final UsbPermissionManager mPermissionManager;

		private final Object mLock = new Object();
		@GuardedBy("mLock")
		@@ -232,13 +232,13 @@ public class UsbHostManager {
		* UsbHostManager
		*/
		public UsbHostManager(Context context, UsbAlsaManager alsaManager,
		UsbSettingsManager settingsManager) {
		UsbPermissionManager permissionManager) {
		mContext = context;

		mHostBlacklist = context.getResources().getStringArray(
		com.android.internal.R.array.config_usbHostBlacklist);
		mUsbAlsaManager = alsaManager;
		mSettingsManager = settingsManager;
		mPermissionManager = permissionManager;
		String deviceConnectionHandler = context.getResources().getString(
		com.android.internal.R.string.config_UsbDeviceConnectionHandling_component);
		if (!TextUtils.isEmpty(deviceConnectionHandler)) {
		@@ -393,8 +393,8 @@ public class UsbHostManager {
		addConnectionRecord(deviceAddress, ConnectionRecord.CONNECT_BADDEVICE,
		parser.getRawDescriptors());
		} else {
		UsbSerialReader serialNumberReader = new UsbSerialReader(mContext, mSettingsManager,
		newDeviceBuilder.serialNumber);
		UsbSerialReader serialNumberReader = new UsbSerialReader(mContext,
		mPermissionManager, newDeviceBuilder.serialNumber);
		UsbDevice newDevice = newDeviceBuilder.build(serialNumberReader);
		serialNumberReader.setDevice(newDevice);

		@@ -444,7 +444,7 @@ public class UsbHostManager {
		if (device != null) {
		Slog.d(TAG, "Removed device at " + deviceAddress + ": " + device.getProductName());
		mUsbAlsaManager.usbDeviceRemoved(deviceAddress);
		mSettingsManager.usbDeviceRemoved(device);
		mPermissionManager.usbDeviceRemoved(device);
		getCurrentUserSettings().usbDeviceRemoved(device);
		ConnectionRecord current = mConnected.get(deviceAddress);
		// Tracking
		@@ -484,9 +484,11 @@ public class UsbHostManager {
		}
		}

		/* Opens the specified USB device */
		public ParcelFileDescriptor openDevice(String deviceAddress, UsbUserSettingsManager settings,
		String packageName, int uid) {
		/**
		* Opens the specified USB device
		*/
		public ParcelFileDescriptor openDevice(String deviceAddress,
		UsbUserPermissionManager permissions, String packageName, int uid) {
		synchronized (mLock) {
		if (isBlackListed(deviceAddress)) {
		throw new SecurityException("USB device is on a restricted bus");
		@@ -498,7 +500,7 @@ public class UsbHostManager {
		"device " + deviceAddress + " does not exist or is restricted");
		}

		settings.checkPermission(device, packageName, uid);
		permissions.checkPermission(device, packageName, uid);
		return nativeOpenDevice(deviceAddress);
		}
		}

services/usb/java/com/android/server/usb/UsbPermissionManager.java

+50 −185

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2018 The Android Open Source Project
		* Copyright (C) 2019 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.
		@@ -17,230 +17,95 @@
		package com.android.server.usb;

		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.app.PendingIntent;
		import android.content.ActivityNotFoundException;
		import android.annotation.UserIdInt;
		import android.content.Context;
		import android.content.Intent;
		import android.hardware.usb.UsbAccessory;
		import android.hardware.usb.UsbDevice;
		import android.hardware.usb.UsbManager;
		import android.os.Binder;
		import android.os.Process;
		import android.os.UserHandle;
		import android.service.usb.UsbSettingsAccessoryPermissionProto;
		import android.service.usb.UsbSettingsDevicePermissionProto;
		import android.service.usb.UsbUserSettingsManagerProto;
		import android.util.Slog;
		import android.util.SparseBooleanArray;
		import android.util.SparseArray;

		import com.android.internal.annotations.GuardedBy;
		import com.android.internal.util.dump.DualDumpOutputStream;

		import java.util.HashMap;

		/**
		* UsbPermissionManager manages usb device or accessory access permissions.
		*
		* @hide
		*/
		class UsbPermissionManager {
		private static final String LOG_TAG = UsbPermissionManager.class.getSimpleName();
		private static final boolean DEBUG = false;

		@GuardedBy("mLock")
		/** Temporary mapping USB device name to list of UIDs with permissions for the device*/
		private final HashMap<String, SparseBooleanArray> mDevicePermissionMap =
		new HashMap<>();
		@GuardedBy("mLock")
		/** Temporary mapping UsbAccessory to list of UIDs with permissions for the accessory*/
		private final HashMap<UsbAccessory, SparseBooleanArray> mAccessoryPermissionMap =
		new HashMap<>();
		/** Context to be used by this module */
		private final @NonNull Context mContext;

		private final UserHandle mUser;
		private final boolean mDisablePermissionDialogs;
		/** Map from user id to {@link UsbUserPermissionManager} for the user */
		@GuardedBy("mPermissionsByUser")
		private final SparseArray<UsbUserPermissionManager> mPermissionsByUser = new SparseArray<>();

		private final Object mLock = new Object();
		final UsbService mUsbService;

		UsbPermissionManager(@NonNull Context context, @NonNull UserHandle user) {
		mUser = user;
		mDisablePermissionDialogs = context.getResources().getBoolean(
		com.android.internal.R.bool.config_disableUsbPermissionDialogs);
		UsbPermissionManager(@NonNull Context context,
		@NonNull UsbService usbService) {
		mContext = context;
		mUsbService = usbService;
		}

		/**
		* Removes access permissions of all packages for the USB accessory.
		*
		* @param accessory to remove permissions for
		*/
		void removeAccessoryPermissions(@NonNull UsbAccessory accessory) {
		synchronized (mLock) {
		mAccessoryPermissionMap.remove(accessory);
		}
		@NonNull UsbUserPermissionManager getPermissionsForUser(@UserIdInt int userId) {
		synchronized (mPermissionsByUser) {
		UsbUserPermissionManager permissions = mPermissionsByUser.get(userId);
		if (permissions == null) {
		permissions = new UsbUserPermissionManager(mContext, UserHandle.of(userId),
		mUsbService.getSettingsForUser(userId));
		mPermissionsByUser.put(userId, permissions);
		}

		/**
		* Removes access permissions of all packages for the USB device.
		*
		* @param device to remove permissions for
		*/
		void removeDevicePermissions(@NonNull UsbDevice device) {
		synchronized (mLock) {
		mDevicePermissionMap.remove(device.getDeviceName());
		return permissions;
		}
		}

		/**
		* Grants permission for USB device without showing system dialog for package with uid.
		*
		* @param device to grant permission for
		* @param uid to grant permission for
		*/
		void grantDevicePermission(@NonNull UsbDevice device, int uid) {
		synchronized (mLock) {
		String deviceName = device.getDeviceName();
		SparseBooleanArray uidList = mDevicePermissionMap.get(deviceName);
		if (uidList == null) {
		uidList = new SparseBooleanArray(1);
		mDevicePermissionMap.put(deviceName, uidList);
		}
		uidList.put(uid, true);
		void remove(@NonNull UserHandle userToRemove) {
		synchronized (mPermissionsByUser) {
		mPermissionsByUser.remove(userToRemove.getIdentifier());
		}
		}

		/**
		* Grants permission for USB accessory without showing system dialog for package with uid.
		* Remove temporary access permission and broadcast that a device was removed.
		*
		* @param accessory to grant permission for
		* @param uid to grant permission for
		* @param device The device that is removed
		*/
		void grantAccessoryPermission(@NonNull UsbAccessory accessory, int uid) {
		synchronized (mLock) {
		SparseBooleanArray uidList = mAccessoryPermissionMap.get(accessory);
		if (uidList == null) {
		uidList = new SparseBooleanArray(1);
		mAccessoryPermissionMap.put(accessory, uidList);
		}
		uidList.put(uid, true);
		void usbDeviceRemoved(@NonNull UsbDevice device) {
		synchronized (mPermissionsByUser) {
		for (int i = 0; i < mPermissionsByUser.size(); i++) {
		// clear temporary permissions for the device
		mPermissionsByUser.valueAt(i).removeDevicePermissions(device);
		}
		}

		/**
		* Returns true if package with uid has permission to access the device.
		*
		* @param device to check permission for
		* @param uid to check permission for
		* @return {@code true} if package with uid has permission
		*/
		boolean hasPermission(@NonNull UsbDevice device, int uid) {
		synchronized (mLock) {
		if (uid == Process.SYSTEM_UID \|\| mDisablePermissionDialogs) {
		return true;
		}
		SparseBooleanArray uidList = mDevicePermissionMap.get(device.getDeviceName());
		if (uidList == null) {
		return false;
		}
		return uidList.get(uid);
		}
		}
		Intent intent = new Intent(UsbManager.ACTION_USB_DEVICE_DETACHED);
		intent.addFlags(Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND);
		intent.putExtra(UsbManager.EXTRA_DEVICE, device);

		/**
		* Returns true if caller has permission to access the accessory.
		*
		* @param accessory to check permission for
		* @param uid to check permission for
		* @return {@code true} if caller has permssion
		*/
		boolean hasPermission(@NonNull UsbAccessory accessory, int uid) {
		synchronized (mLock) {
		if (uid == Process.SYSTEM_UID \|\| mDisablePermissionDialogs) {
		return true;
		}
		SparseBooleanArray uidList = mAccessoryPermissionMap.get(accessory);
		if (uidList == null) {
		return false;
		}
		return uidList.get(uid);
		if (DEBUG) {
		Slog.d(LOG_TAG, "usbDeviceRemoved, sending " + intent);
		}
		mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
		}

		/**
		* Creates UI dialog to request permission for the given package to access the device
		* or accessory.
		* Remove temporary access permission and broadcast that a accessory was removed.
		*
		* @param device The USB device attached
		* @param accessory The USB accessory attached
		* @param canBeDefault Whether the calling pacakge can set as default handler
		* of the USB device or accessory
		* @param packageName The package name of the calling package
		* @param uid The uid of the calling package
		* @param userContext The context to start the UI dialog
		* @param pi PendingIntent for returning result
		* @param accessory The accessory that is removed
		*/
		void requestPermissionDialog(@Nullable UsbDevice device,
		@Nullable UsbAccessory accessory,
		boolean canBeDefault,
		@NonNull String packageName,
		int uid,
		@NonNull Context userContext,
		@NonNull PendingIntent pi) {
		long identity = Binder.clearCallingIdentity();
		Intent intent = new Intent();
		if (device != null) {
		intent.putExtra(UsbManager.EXTRA_DEVICE, device);
		} else {
		intent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
		}
		intent.putExtra(Intent.EXTRA_INTENT, pi);
		intent.putExtra(Intent.EXTRA_UID, uid);
		intent.putExtra(UsbManager.EXTRA_CAN_BE_DEFAULT, canBeDefault);
		intent.putExtra(UsbManager.EXTRA_PACKAGE, packageName);
		intent.setClassName("com.android.systemui",
		"com.android.systemui.usb.UsbPermissionActivity");
		intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

		try {
		userContext.startActivityAsUser(intent, mUser);
		} catch (ActivityNotFoundException e) {
		Slog.e(LOG_TAG, "unable to start UsbPermissionActivity");
		} finally {
		Binder.restoreCallingIdentity(identity);
		}
		void usbAccessoryRemoved(@NonNull UsbAccessory accessory) {
		synchronized (mPermissionsByUser) {
		for (int i = 0; i < mPermissionsByUser.size(); i++) {
		// clear temporary permissions for the accessory
		mPermissionsByUser.valueAt(i).removeAccessoryPermissions(accessory);
		}

		void dump(@NonNull DualDumpOutputStream dump) {
		synchronized (mLock) {
		for (String deviceName : mDevicePermissionMap.keySet()) {
		long devicePermissionToken = dump.start("device_permissions",
		UsbUserSettingsManagerProto.DEVICE_PERMISSIONS);

		dump.write("device_name", UsbSettingsDevicePermissionProto.DEVICE_NAME, deviceName);

		SparseBooleanArray uidList = mDevicePermissionMap.get(deviceName);
		int count = uidList.size();
		for (int i = 0; i < count; i++) {
		dump.write("uids", UsbSettingsDevicePermissionProto.UIDS, uidList.keyAt(i));
		}

		dump.end(devicePermissionToken);
		}

		for (UsbAccessory accessory : mAccessoryPermissionMap.keySet()) {
		long accessoryPermissionToken = dump.start("accessory_permissions",
		UsbUserSettingsManagerProto.ACCESSORY_PERMISSIONS);

		dump.write("accessory_description",
		UsbSettingsAccessoryPermissionProto.ACCESSORY_DESCRIPTION,
		accessory.getDescription());

		SparseBooleanArray uidList = mAccessoryPermissionMap.get(accessory);
		int count = uidList.size();
		for (int i = 0; i < count; i++) {
		dump.write("uids", UsbSettingsAccessoryPermissionProto.UIDS, uidList.keyAt(i));
		Intent intent = new Intent(UsbManager.ACTION_USB_ACCESSORY_DETACHED);
		intent.addFlags(Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND);
		intent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
		mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
		}

		dump.end(accessoryPermissionToken);
		}
		}
		}
		}

services/usb/java/com/android/server/usb/UsbProfileGroupSettingsManager.java

+7 −6

Original line number	Diff line number	Diff line
		@@ -783,7 +783,7 @@ class UsbProfileGroupSettingsManager {
		return;
		}

		mSettingsManager.getSettingsForUser(UserHandle.getUserId(appInfo.uid))
		mSettingsManager.mUsbService.getPermissionsForUser(UserHandle.getUserId(appInfo.uid))
		.grantDevicePermission(device, appInfo.uid);

		Intent activityIntent = new Intent(intent);
		@@ -844,14 +844,15 @@ class UsbProfileGroupSettingsManager {
		}

		if (defaultActivity != null) {
		UsbUserSettingsManager defaultRIUserSettings = mSettingsManager.getSettingsForUser(
		UsbUserPermissionManager defaultRIUserPermissions =
		mSettingsManager.mUsbService.getPermissionsForUser(
		UserHandle.getUserId(defaultActivity.applicationInfo.uid));
		// grant permission for default activity
		if (device != null) {
		defaultRIUserSettings.
		grantDevicePermission(device, defaultActivity.applicationInfo.uid);
		defaultRIUserPermissions
		.grantDevicePermission(device, defaultActivity.applicationInfo.uid);
		} else if (accessory != null) {
		defaultRIUserSettings.grantAccessoryPermission(accessory,
		defaultRIUserPermissions.grantAccessoryPermission(accessory,
		defaultActivity.applicationInfo.uid);
		}

services/usb/java/com/android/server/usb/UsbSerialReader.java

+8 −7

Original line number	Diff line number	Diff line
		@@ -39,7 +39,7 @@ import com.android.internal.util.ArrayUtils;
		class UsbSerialReader extends IUsbSerialReader.Stub {
		private final @Nullable String mSerialNumber;
		private final @NonNull Context mContext;
		private final @NonNull UsbSettingsManager mSettingsManager;
		private final @NonNull UsbPermissionManager mPermissionManager;

		private Object mDevice;

		@@ -51,10 +51,10 @@ class UsbSerialReader extends IUsbSerialReader.Stub {
		* @param settingsManager The USB settings manager
		* @param serialNumber The serial number that might be read
		*/
		UsbSerialReader(@NonNull Context context, @NonNull UsbSettingsManager settingsManager,
		UsbSerialReader(@NonNull Context context, @NonNull UsbPermissionManager permissionManager,
		@Nullable String serialNumber) {
		mContext = context;
		mSettingsManager = settingsManager;
		mPermissionManager = permissionManager;
		mSerialNumber = serialNumber;
		}

		@@ -89,13 +89,14 @@ class UsbSerialReader extends IUsbSerialReader.Stub {
		if (packageTargetSdkVersion >= Build.VERSION_CODES.Q) {
		if (mContext.checkPermission(android.Manifest.permission.MANAGE_USB, pid, uid)
		== PackageManager.PERMISSION_DENIED) {
		UsbUserSettingsManager settings = mSettingsManager.getSettingsForUser(
		UserHandle.getUserId(uid));

		int userId = UserHandle.getUserId(uid);
		if (mDevice instanceof UsbDevice) {
		settings.checkPermission((UsbDevice) mDevice, packageName, uid);
		mPermissionManager.getPermissionsForUser(userId)
		.checkPermission((UsbDevice) mDevice, packageName, uid);
		} else {
		settings.checkPermission((UsbAccessory) mDevice, uid);
		mPermissionManager.getPermissionsForUser(userId)
		.checkPermission((UsbAccessory) mDevice, uid);
		}
		}
		}