Andorid 5.0 NFC源码

/* * Copyright (C) 2010 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.nfc; import android.app.ActivityManager; import android.app.Application; import android.app.KeyguardManager; 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.SharedPreferences; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.content.pm.UserInfo; import android.content.res.Resources.NotFoundException; import android.media.AudioManager; import android.media.SoundPool; import android.nfc.BeamShareData; import android.nfc.ErrorCodes; import android.nfc.FormatException; import android.nfc.IAppCallback; import android.nfc.INfcAdapter; import android.nfc.INfcAdapterExtras; import android.nfc.INfcCardEmulation; import android.nfc.INfcTag; import android.nfc.INfcUnlockHandler; import android.nfc.NdefMessage; import android.nfc.NfcAdapter; import android.nfc.Tag; import android.nfc.TechListParcel; import android.nfc.TransceiveResult; import android.nfc.tech.Ndef; import android.nfc.tech.TagTechnology; import android.os.AsyncTask; import android.os.Binder; import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.os.IBinder; import android.os.Message; import android.os.PowerManager; import android.os.Process; import android.os.RemoteException; import android.os.ServiceManager; import android.os.UserHandle; import android.os.UserManager; import android.provider.Settings; import android.util.Log; import com.android.nfc.DeviceHost.DeviceHostListener; import com.android.nfc.DeviceHost.LlcpConnectionlessSocket; import com.android.nfc.DeviceHost.LlcpServerSocket; import com.android.nfc.DeviceHost.LlcpSocket; import com.android.nfc.DeviceHost.NfcDepEndpoint; import com.android.nfc.DeviceHost.TagEndpoint; import com.android.nfc.cardemulation.CardEmulationManager; import com.android.nfc.dhimpl.NativeNfcManager; import com.android.nfc.handover.HandoverManager; import java.io.FileDescriptor; import java.io.PrintWriter; import java.util.Arrays; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.NoSuchElementException; public class NfcService implements DeviceHostListener { static final boolean DBG = false; static final String TAG = "NfcService"; public static final String SERVICE_NAME = "nfc"; public static final String PREF = "NfcServicePrefs"; static final String PREF_NFC_ON = "nfc_on"; static final boolean NFC_ON_DEFAULT = true; static final String PREF_NDEF_PUSH_ON = "ndef_push_on"; static final boolean NDEF_PUSH_ON_DEFAULT = true; static final String PREF_FIRST_BEAM = "first_beam"; static final String PREF_FIRST_BOOT = "first_boot"; static final String PREF_AIRPLANE_OVERRIDE = "airplane_override"; static final int MSG_NDEF_TAG = 0; static final int MSG_LLCP_LINK_ACTIVATION = 1; static final int MSG_LLCP_LINK_DEACTIVATED = 2; static final int MSG_MOCK_NDEF = 3; static final int MSG_LLCP_LINK_FIRST_PACKET = 4; static final int MSG_ROUTE_AID = 5; static final int MSG_UNROUTE_AID = 6; static final int MSG_COMMIT_ROUTING = 7; static final int MSG_INVOKE_BEAM = 8; static final int MSG_RF_FIELD_ACTIVATED = 9; static final int MSG_RF_FIELD_DEACTIVATED = 10; static final int MSG_RESUME_POLLING = 11; static final long MAX_POLLING_PAUSE_TIMEOUT = 40000; static final int TASK_ENABLE = 1; static final int TASK_DISABLE = 2; static final int TASK_BOOT = 3; // Polling technology masks static final int NFC_POLL_A = 0x01; static final int NFC_POLL_B = 0x02; static final int NFC_POLL_F = 0x04; static final int NFC_POLL_ISO15693 = 0x08; static final int NFC_POLL_B_PRIME = 0x10; static final int NFC_POLL_KOVIO = 0x20; // minimum screen state that enables NFC polling static final int NFC_POLLING_MODE = ScreenStateHelper.SCREEN_STATE_ON_UNLOCKED; // Time to wait for NFC controller to initialize before watchdog // goes off. This time is chosen large, because firmware download // may be a part of initialization. static final int INIT_WATCHDOG_MS = 90000; // Time to wait for routing to be applied before watchdog // goes off static final int ROUTING_WATCHDOG_MS = 10000; // Default delay used for presence checks static final int DEFAULT_PRESENCE_CHECK_DELAY = 125; // The amount of time we wait before manually launching // the Beam animation when called through the share menu. static final int INVOKE_BEAM_DELAY_MS = 1000; // RF field events as defined in NFC extras public static final String ACTION_RF_FIELD_ON_DETECTED = "com.android.nfc_extras.action.RF_FIELD_ON_DETECTED"; public static final String ACTION_RF_FIELD_OFF_DETECTED = "com.android.nfc_extras.action.RF_FIELD_OFF_DETECTED"; // for use with playSound() public static final int SOUND_START = 0; public static final int SOUND_END = 1; public static final int SOUND_ERROR = 2; public static final String ACTION_LLCP_UP = "com.android.nfc.action.LLCP_UP"; public static final String ACTION_LLCP_DOWN = "com.android.nfc.action.LLCP_DOWN"; // Timeout to re-apply routing if a tag was present and we postponed it private static final int APPLY_ROUTING_RETRY_TIMEOUT_MS = 5000; private final UserManager mUserManager; // NFC Execution Environment // fields below are protected by this private final ReaderModeDeathRecipient mReaderModeDeathRecipient = new ReaderModeDeathRecipient(); private final NfcUnlockManager mNfcUnlockManager; private final NfceeAccessControl mNfceeAccessControl; List<PackageInfo> mInstalledPackages; // cached version of installed packages // fields below are used in multiple threads and protected by synchronized(this) final HashMap<Integer, Object> mObjectMap = new HashMap<Integer, Object>(); int mScreenState; boolean mInProvisionMode; // whether we're in setup wizard and enabled NFC provisioning boolean mIsNdefPushEnabled; NfcDiscoveryParameters mCurrentDiscoveryParameters = NfcDiscoveryParameters.getNfcOffParameters(); ReaderModeParams mReaderModeParams; // mState is protected by this, however it is only modified in onCreate() // and the default AsyncTask thread so it is read unprotected from that // thread int mState; // one of NfcAdapter.STATE_ON, STATE_TURNING_ON, etc // fields below are final after onCreate() Context mContext; private DeviceHost mDeviceHost; private SharedPreferences mPrefs; private SharedPreferences.Editor mPrefsEditor; private PowerManager.WakeLock mRoutingWakeLock; int mStartSound; int mEndSound; int mErrorSound; SoundPool mSoundPool; // playback synchronized on this P2pLinkManager mP2pLinkManager; TagService mNfcTagService; NfcAdapterService mNfcAdapter; boolean mIsAirplaneSensitive; boolean mIsAirplaneToggleable; boolean mIsDebugBuild; boolean mIsHceCapable; boolean mPollingPaused; private NfcDispatcher mNfcDispatcher; private PowerManager mPowerManager;