| /* |
| * Copyright (C) 2016 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 and |
| * limitations under the License. |
| */ |
| |
| package com.android.server.usb; |
| |
| import android.annotation.NonNull; |
| import android.annotation.UserIdInt; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.UserInfo; |
| import android.hardware.usb.UsbAccessory; |
| import android.hardware.usb.UsbDevice; |
| import android.hardware.usb.UsbManager; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.util.Slog; |
| import android.util.SparseArray; |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.util.IndentingPrintWriter; |
| |
| /** |
| * Maintains all {@link UsbUserSettingsManager} for all users. |
| */ |
| class UsbSettingsManager { |
| private static final String LOG_TAG = UsbSettingsManager.class.getSimpleName(); |
| private static final boolean DEBUG = false; |
| |
| /** Context to be used by this module */ |
| private final @NonNull Context mContext; |
| |
| /** Map from user id to {@link UsbUserSettingsManager} for the user */ |
| @GuardedBy("mSettingsByUser") |
| private final SparseArray<UsbUserSettingsManager> mSettingsByUser = new SparseArray<>(); |
| |
| /** |
| * Map from the parent profile's user id to {@link UsbProfileGroupSettingsManager} for the |
| * group. |
| */ |
| @GuardedBy("mSettingsByProfileGroup") |
| private final SparseArray<UsbProfileGroupSettingsManager> mSettingsByProfileGroup |
| = new SparseArray<>(); |
| private UserManager mUserManager; |
| |
| public UsbSettingsManager(@NonNull Context context) { |
| mContext = context; |
| mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); |
| } |
| |
| /** |
| * Get the {@link UsbUserSettingsManager} for a user. |
| * |
| * @param userId The id of the user |
| * |
| * @return The settings for the user |
| */ |
| @NonNull UsbUserSettingsManager getSettingsForUser(@UserIdInt int userId) { |
| synchronized (mSettingsByUser) { |
| UsbUserSettingsManager settings = mSettingsByUser.get(userId); |
| if (settings == null) { |
| settings = new UsbUserSettingsManager(mContext, new UserHandle(userId)); |
| mSettingsByUser.put(userId, settings); |
| } |
| return settings; |
| } |
| } |
| |
| /** |
| * Get the {@link UsbProfileGroupSettingsManager} for a user. |
| * |
| * @param user Any user of the profile group |
| * |
| * @return The settings for the profile group |
| */ |
| @NonNull UsbProfileGroupSettingsManager getSettingsForProfileGroup(@NonNull UserHandle user) { |
| UserHandle parentUser; |
| |
| UserInfo parentUserInfo = mUserManager.getProfileParent(user.getIdentifier()); |
| if (parentUserInfo != null) { |
| parentUser = parentUserInfo.getUserHandle(); |
| } else { |
| parentUser = user; |
| } |
| |
| synchronized (mSettingsByProfileGroup) { |
| UsbProfileGroupSettingsManager settings = mSettingsByProfileGroup.get( |
| parentUser.getIdentifier()); |
| if (settings == null) { |
| settings = new UsbProfileGroupSettingsManager(mContext, parentUser, this); |
| mSettingsByProfileGroup.put(parentUser.getIdentifier(), settings); |
| } |
| return settings; |
| } |
| } |
| |
| /** |
| * Remove the settings for a user. |
| * |
| * @param userToRemove The user to remove |
| */ |
| void remove(@NonNull UserHandle userToRemove) { |
| synchronized (mSettingsByUser) { |
| mSettingsByUser.remove(userToRemove.getIdentifier()); |
| } |
| |
| synchronized (mSettingsByProfileGroup) { |
| if (mSettingsByProfileGroup.indexOfKey(userToRemove.getIdentifier()) >= 0) { |
| // The user to remove is the parent user of the group. The parent is the last user |
| // that gets removed. All state will be removed with the user |
| mSettingsByProfileGroup.remove(userToRemove.getIdentifier()); |
| } else { |
| // We cannot find the parent user of the user that is removed, hence try to remove |
| // it from all profile groups. |
| int numProfileGroups = mSettingsByProfileGroup.size(); |
| for (int i = 0; i < numProfileGroups; i++) { |
| mSettingsByProfileGroup.valueAt(i).removeAllDefaultsForUser(userToRemove); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Dump all settings of all users. |
| * |
| * @param pw The writer to dump to |
| */ |
| void dump(@NonNull IndentingPrintWriter pw) { |
| synchronized (mSettingsByUser) { |
| int numUsers = mSettingsByUser.size(); |
| for (int i = 0; i < numUsers; i++) { |
| final int userId = mSettingsByUser.keyAt(i); |
| final UsbUserSettingsManager settings = mSettingsByUser.valueAt(i); |
| pw.println("Settings for user " + userId + ":"); |
| pw.increaseIndent(); |
| try { |
| settings.dump(pw); |
| } finally { |
| pw.decreaseIndent(); |
| } |
| } |
| } |
| |
| synchronized (mSettingsByProfileGroup) { |
| int numProfileGroups = mSettingsByProfileGroup.size(); |
| for (int i = 0; i < numProfileGroups; i++) { |
| final int parentUserId = mSettingsByProfileGroup.keyAt(i); |
| final UsbProfileGroupSettingsManager settings = mSettingsByProfileGroup.valueAt(i); |
| pw.println("Settings for profile group " + parentUserId + ":"); |
| pw.increaseIndent(); |
| try { |
| settings.dump(pw); |
| } finally { |
| pw.decreaseIndent(); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Remove temporary access permission and broadcast that a device was removed. |
| * |
| * @param device The device that is removed |
| */ |
| void usbDeviceRemoved(@NonNull UsbDevice device) { |
| synchronized (mSettingsByUser) { |
| for (int i = 0; i < mSettingsByUser.size(); i++) { |
| // clear temporary permissions for the device |
| mSettingsByUser.valueAt(i).removeDevicePermissions(device); |
| } |
| } |
| |
| Intent intent = new Intent(UsbManager.ACTION_USB_DEVICE_DETACHED); |
| intent.addFlags(Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND); |
| intent.putExtra(UsbManager.EXTRA_DEVICE, device); |
| |
| if (DEBUG) { |
| Slog.d(LOG_TAG, "usbDeviceRemoved, sending " + intent); |
| } |
| mContext.sendBroadcastAsUser(intent, UserHandle.ALL); |
| } |
| |
| /** |
| * Remove temporary access permission and broadcast that a accessory was removed. |
| * |
| * @param accessory The accessory that is removed |
| */ |
| void usbAccessoryRemoved(@NonNull UsbAccessory accessory) { |
| synchronized (mSettingsByUser) { |
| for (int i = 0; i < mSettingsByUser.size(); i++) { |
| // clear temporary permissions for the accessory |
| mSettingsByUser.valueAt(i).removeAccessoryPermissions(accessory); |
| } |
| } |
| |
| 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); |
| } |
| } |