/* * 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.BroadcastOptions; import android.app.KeyguardManager; import android.app.KeyguardManager.KeyguardLockedStateListener; import android.app.PendingIntent; import android.app.VrManager; import android.app.admin.DevicePolicyManager; import android.app.backup.BackupManager; 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.ApplicationInfo; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.content.res.Resources.NotFoundException; import android.database.ContentObserver; import android.media.AudioAttributes; import android.media.SoundPool; import android.net.Uri; import android.nfc.AvailableNfcAntenna; import android.nfc.NfcFrameworkInitializer; import android.nfc.NfcServiceManager; import android.nfc.cardemulation.CardEmulation; 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.INfcControllerAlwaysOnListener; import android.nfc.INfcDta; import android.nfc.INfcFCardEmulation; import android.nfc.INfcTag; import android.nfc.INfcUnlockHandler; import android.nfc.ITagRemovedCallback; import android.nfc.NdefMessage; import android.nfc.NfcAdapter; import android.nfc.NfcAntennaInfo; 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.SystemClock; import android.os.SystemProperties; import android.os.UserHandle; import android.os.UserManager; import android.os.VibrationAttributes; import android.os.VibrationEffect; import android.os.Vibrator; import android.provider.Settings; import android.provider.Settings.SettingNotFoundException; import android.se.omapi.ISecureElementService; import android.sysprop.NfcProperties; import android.text.TextUtils; import android.util.EventLog; import android.util.Log; import android.util.proto.ProtoOutputStream; import android.widget.Toast; 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.Utils; import com.android.nfc.handover.HandoverDataParser; import org.json.JSONException; import org.json.JSONObject; import java.io.File; import java.io.FileDescriptor; import java.io.FileOutputStream; import java.io.IOException; import java.io.PrintWriter; import java.io.UnsupportedEncodingException; import java.nio.ByteBuffer; import java.nio.file.Files; import java.security.SecureRandom; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.HashMap; import java.util.HashSet; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.NoSuchElementException; import java.util.Scanner; import java.util.Set; import java.util.concurrent.atomic.AtomicInteger; import java.util.stream.Collectors; public class NfcService implements DeviceHostListener, ForegroundUtils.Callback { static final boolean DBG = NfcProperties.debug_enabled().orElse(false); static final String TAG = "NfcService"; public static final String SERVICE_NAME = "nfc"; private static final String SYSTEM_UI = "com.android.systemui"; public static final String PREF = "NfcServicePrefs"; public static final String PREF_TAG_APP_LIST = "TagIntentAppPreferenceListPrefs"; static final String PREF_NFC_ON = "nfc_on"; static final boolean NFC_ON_DEFAULT = true; static final String PREF_SECURE_NFC_ON = "secure_nfc_on"; static final boolean SECURE_NFC_ON_DEFAULT = false; static final String PREF_FIRST_BOOT = "first_boot"; static final String PREF_ANTENNA_BLOCKED_MESSAGE_SHOWN = "antenna_blocked_message_shown"; static final boolean ANTENNA_BLOCKED_MESSAGE_SHOWN_DEFAULT = false; static final String NATIVE_LOG_FILE_NAME = "native_crash_logs"; static final String NATIVE_LOG_FILE_PATH = "/data/misc/nfc/logs"; static final int NATIVE_CRASH_FILE_SIZE = 1024 * 1024; static final int MSG_NDEF_TAG = 0; // Previously used: MSG_LLCP_LINK_ACTIVATION = 1 // Previously used: MSG_LLCP_LINK_DEACTIVATED = 2 static final int MSG_MOCK_NDEF = 3; // Previously used: 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; // Previously used: 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 int MSG_REGISTER_T3T_IDENTIFIER = 12; static final int MSG_DEREGISTER_T3T_IDENTIFIER = 13; static final int MSG_TAG_DEBOUNCE = 14; // Previously used: MSG_UPDATE_STATS = 15 static final int MSG_APPLY_SCREEN_STATE = 16; static final int MSG_TRANSACTION_EVENT = 17; static final int MSG_PREFERRED_PAYMENT_CHANGED = 18; static final int MSG_TOAST_DEBOUNCE_EVENT = 19; static final int MSG_DELAY_POLLING = 20; static final String MSG_ROUTE_AID_PARAM_TAG = "power"; // Negative value for NO polling delay static final int NO_POLL_DELAY = -1; static final long MAX_POLLING_PAUSE_TIMEOUT = 40000; static final int MAX_TOAST_DEBOUNCE_TIME = 10000; static final int TASK_ENABLE = 1; static final int TASK_DISABLE = 2; static final int TASK_BOOT = 3; static final int TASK_ENABLE_ALWAYS_ON = 4; static final int TASK_DISABLE_ALWAYS_ON = 5; // 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_V = 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; static final NfcProperties.snoop_log_mode_values NFC_SNOOP_LOG_MODE = NfcProperties.snoop_log_mode().orElse(NfcProperties.snoop_log_mode_values.FILTERED); static final boolean NFC_VENDOR_DEBUG_ENABLED = NfcProperties.vendor_debug_enabled().orElse(false); // 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"; public static boolean sIsShortRecordLayout = false; // 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 int NCI_VERSION_2_0 = 0x20; public static final int NCI_VERSION_1_0 = 0x10; 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 static final VibrationAttributes HARDWARE_FEEDBACK_VIBRATION_ATTRIBUTES = VibrationAttributes.createForUsage(VibrationAttributes.USAGE_HARDWARE_FEEDBACK); private final UserManager mUserManager; private final ActivityManager mActivityManager; private static int nci_version = NCI_VERSION_1_0; // NFC Execution Environment // fields below are protected by this private final boolean mPollingDisableAllowed; private HashMap mPollingDisableDeathRecipients = new HashMap(); private final ReaderModeDeathRecipient mReaderModeDeathRecipient = new ReaderModeDeathRecipient(); private final SeServiceDeathRecipient mSeServiceDeathRecipient = new SeServiceDeathRecipient(); private final NfcUnlockManager mNfcUnlockManager; private final BackupManager mBackupManager; private final SecureRandom mCookieGenerator = new SecureRandom(); // Tag app preference list for the target UserId. HashMap> mTagAppPrefList = new HashMap>(); // cached version of installed packages requesting Android.permission.NFC_TRANSACTION_EVENTS // for current user and profiles. The Integer part is the userId. HashMap> mNfcEventInstalledPackages = new HashMap>(); // cached version of installed packages requesting // Android.permission.NFC_PREFERRED_PAYMENT_INFO for current user and profiles. // The Integer part is the userId. HashMap> mNfcPreferredPaymentChangedInstalledPackages = new HashMap>(); // fields below are used in multiple threads and protected by synchronized(this) final HashMap mObjectMap = new HashMap(); int mScreenState; boolean mInProvisionMode; // whether we're in setup wizard and enabled NFC provisioning boolean mIsSecureNfcEnabled; boolean mSkipNdefRead; NfcDiscoveryParameters mCurrentDiscoveryParameters = NfcDiscoveryParameters.getNfcOffParameters(); ReaderModeParams mReaderModeParams; private int mUserId; boolean mPollingPaused; // True if nfc notification message already shown boolean mAntennaBlockedMessageShown; private static int mDispatchFailedCount; private static int mDispatchFailedMax; static final int INVALID_NATIVE_HANDLE = -1; byte mDebounceTagUid[]; int mDebounceTagDebounceMs; int mDebounceTagNativeHandle = INVALID_NATIVE_HANDLE; ITagRemovedCallback mDebounceTagRemovedCallback; // Only accessed on one thread so doesn't need locking NdefMessage mLastReadNdefMessage; // 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 // mAlwaysOnState 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 mAlwaysOnState; // 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 SharedPreferences mTagAppPrefListPrefs; private PowerManager.WakeLock mRoutingWakeLock; private PowerManager.WakeLock mRequireUnlockWakeLock; int mStartSound; int mEndSound; int mErrorSound; SoundPool mSoundPool; // playback synchronized on this TagService mNfcTagService; NfcAdapterService mNfcAdapter; NfcDtaService mNfcDtaService; RoutingTableParser mRoutingTableParser; boolean mIsDebugBuild; boolean mIsHceCapable; boolean mIsHceFCapable; boolean mIsSecureNfcCapable; boolean mIsRequestUnlockShowed; boolean mIsRecovering; // polling delay control variables private final int mPollDelayTime; private final int mPollDelayTimeLong; private final int mPollDelayCountMax; private int mPollDelayCount; private boolean mPollDelayed; boolean mNotifyDispatchFailed; boolean mNotifyReadFailed; // for recording the latest Tag object cookie long mCookieUpToDate = -1; private NfcDispatcher mNfcDispatcher; private PowerManager mPowerManager; private KeyguardManager mKeyguard; private HandoverDataParser mHandoverDataParser; private ContentResolver mContentResolver; private CardEmulationManager mCardEmulationManager; private Vibrator mVibrator; private VibrationEffect mVibrationEffect; private ISecureElementService mSEService; private VrManager mVrManager; private ScreenStateHelper mScreenStateHelper; private ForegroundUtils mForegroundUtils; private static NfcService sService; private static boolean sToast_debounce = false; private static int sToast_debounce_time_ms = 3000; public static boolean sIsDtaMode = false; boolean mIsVrModeEnabled; private final boolean mIsTagAppPrefSupported; private final boolean mIsAlwaysOnSupported; private final Set mAlwaysOnListeners = Collections.synchronizedSet(new HashSet<>()); public static NfcService getInstance() { return sService; } @Override public void onRemoteEndpointDiscovered(TagEndpoint tag) { sendMessage(NfcService.MSG_NDEF_TAG, tag); } /** * Notifies transaction */ @Override public void onHostCardEmulationActivated(int technology) { if (mCardEmulationManager != null) { mCardEmulationManager.onHostCardEmulationActivated(technology); } } @Override public void onHostCardEmulationData(int technology, byte[] data) { if (mCardEmulationManager != null) { mCardEmulationManager.onHostCardEmulationData(technology, data); } } @Override public void onHostCardEmulationDeactivated(int technology) { if (mCardEmulationManager != null) { mCardEmulationManager.onHostCardEmulationDeactivated(technology); } } /** * Notifies P2P Device detected, to activate LLCP link */ @Override public void onLlcpLinkActivated(NfcDepEndpoint device) { } /** * Notifies P2P Device detected, to activate LLCP link */ @Override public void onLlcpLinkDeactivated(NfcDepEndpoint device) { } /** * Notifies P2P Device detected, first packet received over LLCP link */ @Override public void onLlcpFirstPacketReceived(NfcDepEndpoint device) { } @Override public void onRemoteFieldActivated() { sendMessage(NfcService.MSG_RF_FIELD_ACTIVATED, null); } @Override public void onRemoteFieldDeactivated() { sendMessage(NfcService.MSG_RF_FIELD_DEACTIVATED, null); } @Override public void onNfcTransactionEvent(byte[] aid, byte[] data, String seName) { byte[][] dataObj = {aid, data, seName.getBytes()}; sendMessage(NfcService.MSG_TRANSACTION_EVENT, dataObj); } @Override public void onEeUpdated() { new ApplyRoutingTask().execute(); } @Override public void onHwErrorReported() { try { mContext.unregisterReceiver(mReceiver); } catch (IllegalArgumentException e) { Log.w(TAG, "Failed to unregisterScreenState BroadCastReceiver: " + e); } mIsRecovering = true; new EnableDisableTask().execute(TASK_DISABLE); new EnableDisableTask().execute(TASK_ENABLE); } final class ReaderModeParams { public int flags; public IAppCallback callback; public int presenceCheckDelay; public IBinder binder; public int uid; } void saveNfcOnSetting(boolean on) { synchronized (NfcService.this) { mPrefsEditor.putBoolean(PREF_NFC_ON, on); mPrefsEditor.apply(); mBackupManager.dataChanged(); } } boolean getNfcOnSetting() { synchronized (NfcService.this) { return mPrefs.getBoolean(PREF_NFC_ON, NFC_ON_DEFAULT); } } /** * @hide constant copied from {@link Settings.Global} * TODO(b/274636414): Migrate to official API in Android V. */ private static final String SETTINGS_SATELLITE_MODE_RADIOS = "satellite_mode_radios"; /** * @hide constant copied from {@link Settings.Global} * TODO(b/274636414): Migrate to official API in Android V. */ private static final String SETTINGS_SATELLITE_MODE_ENABLED = "satellite_mode_enabled"; private boolean isSatelliteModeSensitive() { final String satelliteRadios = Settings.Global.getString(mContentResolver, SETTINGS_SATELLITE_MODE_RADIOS); return satelliteRadios == null || satelliteRadios.contains(Settings.Global.RADIO_NFC); } /** Returns true if satellite mode is turned on. */ private boolean isSatelliteModeOn() { if (!isSatelliteModeSensitive()) return false; return Settings.Global.getInt(mContentResolver, SETTINGS_SATELLITE_MODE_ENABLED, 0) == 1; } boolean shouldEnableNfc() { return getNfcOnSetting() && !isSatelliteModeOn(); } public NfcService(Application nfcApplication) { mUserId = ActivityManager.getCurrentUser(); mContext = nfcApplication; mNfcTagService = new TagService(); mNfcAdapter = new NfcAdapterService(); mRoutingTableParser = new RoutingTableParser(); Log.i(TAG, "Starting NFC service"); sService = this; mScreenStateHelper = new ScreenStateHelper(mContext); mContentResolver = mContext.getContentResolver(); mDeviceHost = new NativeNfcManager(mContext, this); mNfcUnlockManager = NfcUnlockManager.getInstance(); mHandoverDataParser = new HandoverDataParser(); boolean isNfcProvisioningEnabled = false; try { isNfcProvisioningEnabled = mContext.getResources().getBoolean( R.bool.enable_nfc_provisioning); } catch (NotFoundException e) { } if (isNfcProvisioningEnabled) { mInProvisionMode = Settings.Global.getInt(mContentResolver, Settings.Global.DEVICE_PROVISIONED, 0) == 0; } else { mInProvisionMode = false; } mNfcDispatcher = new NfcDispatcher(mContext, mHandoverDataParser, mInProvisionMode); mPrefs = mContext.getSharedPreferences(PREF, Context.MODE_PRIVATE); mPrefsEditor = mPrefs.edit(); mState = NfcAdapter.STATE_OFF; mAlwaysOnState = NfcAdapter.STATE_OFF; mIsDebugBuild = "userdebug".equals(Build.TYPE) || "eng".equals(Build.TYPE); mPowerManager = mContext.getSystemService(PowerManager.class); mRoutingWakeLock = mPowerManager.newWakeLock( PowerManager.PARTIAL_WAKE_LOCK, "NfcService:mRoutingWakeLock"); mRequireUnlockWakeLock = mPowerManager.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.ON_AFTER_RELEASE, "NfcService:mRequireUnlockWakeLock"); mKeyguard = mContext.getSystemService(KeyguardManager.class); mUserManager = mContext.getSystemService(UserManager.class); mActivityManager = mContext.getSystemService(ActivityManager.class); mVibrator = mContext.getSystemService(Vibrator.class); mVibrationEffect = VibrationEffect.createOneShot(200, VibrationEffect.DEFAULT_AMPLITUDE); mVrManager = mContext.getSystemService(VrManager.class); mScreenState = mScreenStateHelper.checkScreenState(); mBackupManager = new BackupManager(mContext); // Intents for all users IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_OFF); filter.addAction(Intent.ACTION_SCREEN_ON); filter.addAction(Intent.ACTION_USER_PRESENT); filter.addAction(Intent.ACTION_USER_SWITCHED); filter.addAction(Intent.ACTION_USER_ADDED); mContext.registerReceiverForAllUsers(mReceiver, filter, null, null); // Listen for work profile adds or removes. IntentFilter managedProfileFilter = new IntentFilter(); managedProfileFilter.addAction(Intent.ACTION_MANAGED_PROFILE_ADDED); managedProfileFilter.addAction(Intent.ACTION_MANAGED_PROFILE_REMOVED); managedProfileFilter.addAction(Intent.ACTION_MANAGED_PROFILE_AVAILABLE); managedProfileFilter.addAction(Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE); mContext.registerReceiverForAllUsers(mManagedProfileReceiver, managedProfileFilter, null, null); IntentFilter ownerFilter = new IntentFilter(Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE); ownerFilter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE); ownerFilter.addAction(Intent.ACTION_SHUTDOWN); mContext.registerReceiverForAllUsers(mOwnerReceiver, ownerFilter, null, null); ownerFilter = new IntentFilter(); ownerFilter.addAction(Intent.ACTION_PACKAGE_ADDED); ownerFilter.addAction(Intent.ACTION_PACKAGE_REMOVED); ownerFilter.addDataScheme("package"); mContext.registerReceiverForAllUsers(mOwnerReceiver, ownerFilter, null, null); addKeyguardLockedStateListener(); updatePackageCache(); PackageManager pm = mContext.getPackageManager(); mIsHceCapable = pm.hasSystemFeature(PackageManager.FEATURE_NFC_HOST_CARD_EMULATION) || pm.hasSystemFeature(PackageManager.FEATURE_NFC_HOST_CARD_EMULATION_NFCF); mIsHceFCapable = pm.hasSystemFeature(PackageManager.FEATURE_NFC_HOST_CARD_EMULATION_NFCF); if (mIsHceCapable) { mCardEmulationManager = new CardEmulationManager(mContext); } mForegroundUtils = ForegroundUtils.getInstance(mActivityManager); mIsSecureNfcCapable = mNfcAdapter.deviceSupportsNfcSecure(); mIsSecureNfcEnabled = mPrefs.getBoolean(PREF_SECURE_NFC_ON, SECURE_NFC_ON_DEFAULT) && mIsSecureNfcCapable; mDeviceHost.setNfcSecure(mIsSecureNfcEnabled); sToast_debounce_time_ms = mContext.getResources().getInteger(R.integer.toast_debounce_time_ms); if(sToast_debounce_time_ms > MAX_TOAST_DEBOUNCE_TIME) { sToast_debounce_time_ms = MAX_TOAST_DEBOUNCE_TIME; } // Notification message variables mDispatchFailedCount = 0; if (mContext.getResources().getBoolean(R.bool.enable_antenna_blocked_alert) && !mPrefs.getBoolean(PREF_ANTENNA_BLOCKED_MESSAGE_SHOWN, ANTENNA_BLOCKED_MESSAGE_SHOWN_DEFAULT)) { mAntennaBlockedMessageShown = false; mDispatchFailedMax = mContext.getResources().getInteger(R.integer.max_antenna_blocked_failure_count); } else { mAntennaBlockedMessageShown = true; } // Polling delay count for switching from stage one to stage two. mPollDelayCountMax = mContext.getResources().getInteger(R.integer.unknown_tag_polling_delay_count_max); // Stage one: polling delay time for the first few unknown tag detections mPollDelayTime = mContext.getResources().getInteger(R.integer.unknown_tag_polling_delay); // Stage two: longer polling delay time after max_poll_delay_count mPollDelayTimeLong = mContext.getResources().getInteger(R.integer.unknown_tag_polling_delay_long); mNotifyDispatchFailed = mContext.getResources().getBoolean(R.bool.enable_notify_dispatch_failed); mNotifyReadFailed = mContext.getResources().getBoolean(R.bool.enable_notify_read_failed); mPollingDisableAllowed = mContext.getResources().getBoolean(R.bool.polling_disable_allowed); // Make sure this is only called when object construction is complete. NfcServiceManager manager = NfcFrameworkInitializer.getNfcServiceManager(); if (manager == null) { Log.e(TAG, "NfcServiceManager is null"); throw new UnsupportedOperationException(); } manager.getNfcManagerServiceRegisterer().register(mNfcAdapter); mIsAlwaysOnSupported = mContext.getResources().getBoolean(R.bool.nfcc_always_on_allowed); mIsTagAppPrefSupported = mContext.getResources().getBoolean(R.bool.tag_intent_app_pref_supported); Uri uri = Settings.Global.getUriFor(SETTINGS_SATELLITE_MODE_ENABLED); if (uri == null) { Log.e(TAG, "satellite mode key does not exist in Settings"); } else { mContext.getContentResolver().registerContentObserver( uri, false, new ContentObserver(null) { @Override public void onChange(boolean selfChange) { if (isSatelliteModeSensitive()) { Log.i(TAG, "Satellite mode change detected"); if (shouldEnableNfc()) { new EnableDisableTask().execute(TASK_ENABLE); } else { new EnableDisableTask().execute(TASK_DISABLE); } } } }); } new EnableDisableTask().execute(TASK_BOOT); // do blocking boot tasks if (NFC_SNOOP_LOG_MODE.equals(NfcProperties.snoop_log_mode_values.FULL) || NFC_VENDOR_DEBUG_ENABLED) { new NfcDeveloperOptionNotification(mContext).startNotification(); } connectToSeService(); } private void initTagAppPrefList() { if (!mIsTagAppPrefSupported) return; mTagAppPrefList.clear(); mTagAppPrefListPrefs = mContext.getSharedPreferences(PREF_TAG_APP_LIST, Context.MODE_PRIVATE); try { if (mTagAppPrefListPrefs != null) { UserManager um = mContext.createContextAsUser( UserHandle.of(ActivityManager.getCurrentUser()), 0) .getSystemService(UserManager.class); List luh = um.getEnabledProfiles(); for (UserHandle uh : luh) { HashMap map = new HashMap<>(); int userId = uh.getIdentifier(); String jsonString = mTagAppPrefListPrefs.getString(Integer.toString(userId), (new JSONObject()).toString()); if (jsonString != null) { JSONObject jsonObject = new JSONObject(jsonString); Iterator keysItr = jsonObject.keys(); while (keysItr.hasNext()) { String key = keysItr.next(); Boolean value = jsonObject.getBoolean(key); map.put(key, value); if (DBG) Log.d(TAG, "uid:" + userId + "key:" + key + ": " + value); } } mTagAppPrefList.put(userId, map); } } else { Log.e(TAG, "Can't get PREF_TAG_APP_LIST"); } } catch (JSONException e) { Log.e(TAG, "JSONException: " + e); } } private void storeTagAppPrefList() { if (!mIsTagAppPrefSupported) return; mTagAppPrefListPrefs = mContext.getSharedPreferences(PREF_TAG_APP_LIST, Context.MODE_PRIVATE); if (mTagAppPrefListPrefs != null) { UserManager um = mContext.createContextAsUser( UserHandle.of(ActivityManager.getCurrentUser()), 0) .getSystemService(UserManager.class); List luh = um.getEnabledProfiles(); for (UserHandle uh : luh) { SharedPreferences.Editor editor = mTagAppPrefListPrefs.edit(); int userId = uh.getIdentifier(); HashMap map; synchronized (NfcService.this) { map = mTagAppPrefList.getOrDefault(userId, new HashMap<>()); } if (map.size() > 0) { String userIdStr = Integer.toString(userId); JSONObject jsonObject = new JSONObject(map); String jsonString = jsonObject.toString(); editor.remove(userIdStr).putString(userIdStr, jsonString).apply(); } } } else { Log.e(TAG, "Can't get PREF_TAG_APP_LIST"); } } private boolean isPackageInstalled(String pkgName, int userId) { final PackageInfo info; try { info = mContext.createContextAsUser(UserHandle.of(userId), 0) .getPackageManager().getPackageInfo(pkgName, PackageManager.MATCH_ALL); } catch (PackageManager.NameNotFoundException e) { return false; } return info != null; } // Remove obsolete entries // return true if the preference list changed. private boolean renewTagAppPrefList() { if (!mIsTagAppPrefSupported) return false; boolean changed = false; UserManager um = mContext.createContextAsUser( UserHandle.of(ActivityManager.getCurrentUser()), 0) .getSystemService(UserManager.class); List luh = um.getEnabledProfiles(); for (UserHandle uh : luh) { int userId = uh.getIdentifier(); synchronized (NfcService.this) { changed = mTagAppPrefList.getOrDefault(userId, new HashMap<>()) .keySet().removeIf(k2 -> !isPackageInstalled(k2, userId)); } } if (DBG) Log.d(TAG, "TagAppPreference changed " + changed); return changed; } private boolean isSEServiceAvailable() { if (mSEService == null) { connectToSeService(); } return (mSEService != null); } private void connectToSeService() { try { mSEService = ISecureElementService.Stub.asInterface(ServiceManager.getService( Context.SECURE_ELEMENT_SERVICE)); if (mSEService != null) { IBinder seServiceBinder = mSEService.asBinder(); seServiceBinder.linkToDeath(mSeServiceDeathRecipient, 0); } } catch (RemoteException e) { Log.e(TAG, "Error Registering SE service to linktoDeath : " + e); } } void initSoundPool() { synchronized (this) { if (mSoundPool == null) { mSoundPool = new SoundPool.Builder() .setMaxStreams(1) .setAudioAttributes( new AudioAttributes.Builder() .setUsage(AudioAttributes.USAGE_ASSISTANCE_SONIFICATION) .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION) .build()) .build(); mStartSound = mSoundPool.load(mContext, R.raw.start, 1); mEndSound = mSoundPool.load(mContext, R.raw.end, 1); mErrorSound = mSoundPool.load(mContext, R.raw.error, 1); } } } void releaseSoundPool() { synchronized (this) { if (mSoundPool != null) { mSoundPool.release(); mSoundPool = null; } } } void updatePackageCache() { UserManager um = mContext.createContextAsUser( UserHandle.of(ActivityManager.getCurrentUser()), /*flags=*/0) .getSystemService(UserManager.class); List luh = um.getEnabledProfiles(); synchronized (this) { mNfcEventInstalledPackages.clear(); mNfcPreferredPaymentChangedInstalledPackages.clear(); for (UserHandle uh : luh) { if (um.isQuietModeEnabled(uh)) continue; PackageManager pm; try { pm = mContext.createContextAsUser(uh, /*flags=*/0).getPackageManager(); } catch (IllegalStateException e) { Log.d(TAG, "Fail to get PackageManager for user: " + uh); continue; } List packagesNfcEvents = pm.getPackagesHoldingPermissions( new String[] {android.Manifest.permission.NFC_TRANSACTION_EVENT}, PackageManager.GET_ACTIVITIES); List packagesNfcPreferredPaymentChanged = pm.getPackagesHoldingPermissions( new String[] {android.Manifest.permission.NFC_PREFERRED_PAYMENT_INFO}, PackageManager.GET_ACTIVITIES); List packageListNfcEvent = new ArrayList(); for (int i = 0; i < packagesNfcEvents.size(); i++) { packageListNfcEvent.add(packagesNfcEvents.get(i).packageName); } mNfcEventInstalledPackages.put(uh.getIdentifier(), packageListNfcEvent); List packageListNfcPreferredPaymentChanged = new ArrayList(); for (int i = 0; i < packagesNfcPreferredPaymentChanged.size(); i++) { packageListNfcPreferredPaymentChanged.add( packagesNfcPreferredPaymentChanged.get(i).packageName); } mNfcPreferredPaymentChangedInstalledPackages.put( uh.getIdentifier(), packageListNfcPreferredPaymentChanged); } } } /** * Manages tasks that involve turning on/off the NFC controller. *

*

All work that might turn the NFC adapter on or off must be done * through this task, to keep the handling of mState simple. * In other words, mState is only modified in these tasks (and we * don't need a lock to read it in these tasks). *

*

These tasks are all done on the same AsyncTask background * thread, so they are serialized. Each task may temporarily transition * mState to STATE_TURNING_OFF or STATE_TURNING_ON, but must exit in * either STATE_ON or STATE_OFF. This way each task can be guaranteed * of starting in either STATE_OFF or STATE_ON, without needing to hold * NfcService.this for the entire task. *

*

AsyncTask's are also implicitly queued. This is useful for corner * cases like turning airplane mode on while TASK_ENABLE is in progress. * The TASK_DISABLE triggered by airplane mode will be correctly executed * immediately after TASK_ENABLE is complete. This seems like the most sane * way to deal with these situations. *

*

{@link #TASK_ENABLE} enables the NFC adapter, without changing * preferences *

{@link #TASK_DISABLE} disables the NFC adapter, without changing * preferences *

{@link #TASK_BOOT} does first boot work and may enable NFC */ class EnableDisableTask extends AsyncTask { @Override protected Void doInBackground(Integer... params) { // Quick check mState switch (mState) { case NfcAdapter.STATE_TURNING_OFF: case NfcAdapter.STATE_TURNING_ON: Log.e(TAG, "Processing EnableDisable task " + params[0] + " from bad state " + mState); return null; } /* AsyncTask sets this thread to THREAD_PRIORITY_BACKGROUND, * override with the default. THREAD_PRIORITY_BACKGROUND causes * us to service software I2C too slow for firmware download * with the NXP PN544. * TODO: move this to the DAL I2C layer in libnfc-nxp, since this * problem only occurs on I2C platforms using PN544 */ Process.setThreadPriority(Process.THREAD_PRIORITY_DEFAULT); switch (params[0].intValue()) { case TASK_ENABLE: enableInternal(); break; case TASK_DISABLE: disableInternal(); break; case TASK_BOOT: boolean initialized; if (mPrefs.getBoolean(PREF_FIRST_BOOT, true)) { Log.i(TAG, "First Boot"); mPrefsEditor.putBoolean(PREF_FIRST_BOOT, false); mPrefsEditor.apply(); mDeviceHost.factoryReset(); setPaymentForegroundPreference(mUserId); } Log.d(TAG, "checking on firmware download"); if (shouldEnableNfc()) { Log.d(TAG, "NFC is on. Doing normal stuff"); initialized = enableInternal(); } else { Log.d(TAG, "NFC is off. Checking firmware version"); initialized = mDeviceHost.checkFirmware(); } if (initialized) { // TODO(279846422) The system property will be temporary // available for vendors that depend on it. // Remove this code when a replacement API is added. SystemProperties.set("nfc.initialized", "true"); } if (mIsTagAppPrefSupported) { synchronized (NfcService.this) { initTagAppPrefList(); } } break; case TASK_ENABLE_ALWAYS_ON: enableAlwaysOnInternal(); break; case TASK_DISABLE_ALWAYS_ON: disableAlwaysOnInternal(); break; } // Restore default AsyncTask priority Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND); return null; } /** * Enable NFC adapter functions. * Does not toggle preferences. */ boolean enableInternal() { if (mState == NfcAdapter.STATE_ON) { return true; } Log.i(TAG, "Enabling NFC"); NfcStatsLog.write(NfcStatsLog.NFC_STATE_CHANGED, mIsSecureNfcEnabled ? NfcStatsLog.NFC_STATE_CHANGED__STATE__ON_LOCKED : NfcStatsLog.NFC_STATE_CHANGED__STATE__ON); updateState(NfcAdapter.STATE_TURNING_ON); WatchDogThread watchDog = new WatchDogThread("enableInternal", INIT_WATCHDOG_MS); watchDog.start(); try { mRoutingWakeLock.acquire(); try { if (!mIsAlwaysOnSupported || mIsRecovering || (mAlwaysOnState != NfcAdapter.STATE_ON && mAlwaysOnState != NfcAdapter.STATE_TURNING_OFF)) { if (!mDeviceHost.initialize()) { Log.w(TAG, "Error enabling NFC"); updateState(NfcAdapter.STATE_OFF); return false; } } else if (mAlwaysOnState == NfcAdapter.STATE_ON || mAlwaysOnState == NfcAdapter.STATE_TURNING_OFF) { Log.i(TAG, "Already initialized"); } else { Log.e(TAG, "Unexptected bad state " + mAlwaysOnState); updateState(NfcAdapter.STATE_OFF); return false; } } finally { mRoutingWakeLock.release(); } } finally { watchDog.cancel(); } if (mIsHceCapable) { // Generate the initial card emulation routing table mCardEmulationManager.onNfcEnabled(); } mSkipNdefRead = NfcProperties.skipNdefRead().orElse(false); nci_version = getNciVersion(); Log.d(TAG, "NCI_Version: " + nci_version); synchronized (NfcService.this) { mObjectMap.clear(); updateState(NfcAdapter.STATE_ON); onPreferredPaymentChanged(NfcAdapter.PREFERRED_PAYMENT_LOADED); } initSoundPool(); mScreenState = mScreenStateHelper.checkScreenState(); int screen_state_mask = (mNfcUnlockManager.isLockscreenPollingEnabled()) ? (ScreenStateHelper.SCREEN_POLLING_TAG_MASK | mScreenState) : mScreenState; if(mNfcUnlockManager.isLockscreenPollingEnabled()) applyRouting(false); mDeviceHost.doSetScreenState(screen_state_mask); sToast_debounce = false; /* Skip applyRouting if always on state is switching */ if (!mIsAlwaysOnSupported || (mAlwaysOnState != NfcAdapter.STATE_TURNING_ON && mAlwaysOnState != NfcAdapter.STATE_TURNING_OFF)) { /* Start polling loop */ applyRouting(true); } if (mIsRecovering) { // Intents for all users IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_OFF); filter.addAction(Intent.ACTION_SCREEN_ON); filter.addAction(Intent.ACTION_USER_PRESENT); filter.addAction(Intent.ACTION_USER_SWITCHED); filter.addAction(Intent.ACTION_USER_ADDED); mContext.registerReceiverForAllUsers(mReceiver, filter, null, null); mIsRecovering = false; } return true; } /** * Disable all NFC adapter functions. * Does not toggle preferences. */ boolean disableInternal() { if (mState == NfcAdapter.STATE_OFF) { return true; } Log.i(TAG, "Disabling NFC"); NfcStatsLog.write( NfcStatsLog.NFC_STATE_CHANGED, NfcStatsLog.NFC_STATE_CHANGED__STATE__OFF); updateState(NfcAdapter.STATE_TURNING_OFF); /* Sometimes mDeviceHost.deinitialize() hangs, use a watch-dog. * Implemented with a new thread (instead of a Handler or AsyncTask), * because the UI Thread and AsyncTask thread-pools can also get hung * when the NFC controller stops responding */ WatchDogThread watchDog = new WatchDogThread("disableInternal", ROUTING_WATCHDOG_MS); watchDog.start(); if (mIsHceCapable) { mCardEmulationManager.onNfcDisabled(); } // Stop watchdog if tag present // A convenient way to stop the watchdog properly consists of // disconnecting the tag. The polling loop shall be stopped before // to avoid the tag being discovered again. maybeDisconnectTarget(); synchronized (NfcService.this) { // Disable delay polling when disabling mPollDelayed = false; mPollDelayCount = 0; mHandler.removeMessages(MSG_DELAY_POLLING); mPollingDisableDeathRecipients.clear(); mReaderModeParams = null; } mNfcDispatcher.setForegroundDispatch(null, null, null); boolean result; if (!mIsAlwaysOnSupported || mIsRecovering || (mAlwaysOnState == NfcAdapter.STATE_OFF) || (mAlwaysOnState == NfcAdapter.STATE_TURNING_OFF)) { result = mDeviceHost.deinitialize(); if (DBG) Log.d(TAG, "mDeviceHost.deinitialize() = " + result); } else { mDeviceHost.disableDiscovery(); result = true; Log.i(TAG, "AlwaysOn set, disableDiscovery()"); } watchDog.cancel(); synchronized (NfcService.this) { mCurrentDiscoveryParameters = NfcDiscoveryParameters.getNfcOffParameters(); updateState(NfcAdapter.STATE_OFF); } releaseSoundPool(); return result; } /** * Enable always on feature. */ void enableAlwaysOnInternal() { if (mAlwaysOnState == NfcAdapter.STATE_ON) { return; } else if (mState == NfcAdapter.STATE_TURNING_ON || mAlwaysOnState == NfcAdapter.STATE_TURNING_OFF) { Log.e(TAG, "Processing enableAlwaysOnInternal() from bad state"); return; } else if (mState == NfcAdapter.STATE_ON) { updateAlwaysOnState(NfcAdapter.STATE_TURNING_ON); mDeviceHost.setNfceePowerAndLinkCtrl(true); updateAlwaysOnState(NfcAdapter.STATE_ON); } else if (mState == NfcAdapter.STATE_OFF) { /* Special case when NFCC is OFF without initialize. * Temperatorily enable NfcAdapter but don't applyRouting. * Then disable NfcAdapter without deinitialize to keep the NFCC stays initialized. * mState will switch back to OFF in the end. * And the NFCC stays initialized. */ updateAlwaysOnState(NfcAdapter.STATE_TURNING_ON); if (!enableInternal()) { updateAlwaysOnState(NfcAdapter.STATE_OFF); return; } disableInternal(); mDeviceHost.setNfceePowerAndLinkCtrl(true); updateAlwaysOnState(NfcAdapter.STATE_ON); } } /** * Disable always on feature. */ void disableAlwaysOnInternal() { if (mAlwaysOnState == NfcAdapter.STATE_OFF) { return; } else if (mState == NfcAdapter.STATE_TURNING_ON || mAlwaysOnState == NfcAdapter.STATE_TURNING_OFF) { Log.e(TAG, "Processing disableAlwaysOnInternal() from bad state"); return; } else if (mState == NfcAdapter.STATE_ON) { updateAlwaysOnState(NfcAdapter.STATE_TURNING_OFF); mDeviceHost.setNfceePowerAndLinkCtrl(false); updateAlwaysOnState(NfcAdapter.STATE_OFF); } else if (mState == NfcAdapter.STATE_OFF) { /* Special case when mState is OFF but NFCC is already initialized. * Deinitialize mDevicehost directly. */ updateAlwaysOnState(NfcAdapter.STATE_TURNING_OFF); mDeviceHost.setNfceePowerAndLinkCtrl(false); boolean result = mDeviceHost.deinitialize(); if (DBG) Log.d(TAG, "mDeviceHost.deinitialize() = " + result); updateAlwaysOnState(NfcAdapter.STATE_OFF); } } void updateState(int newState) { synchronized (NfcService.this) { if (newState == mState) { return; } mState = newState; Intent intent = new Intent(NfcAdapter.ACTION_ADAPTER_STATE_CHANGED); intent.setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); intent.putExtra(NfcAdapter.EXTRA_ADAPTER_STATE, mState); mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT); } } void updateAlwaysOnState(int newState) { synchronized (NfcService.this) { if (newState == mAlwaysOnState) { return; } mAlwaysOnState = newState; if (mAlwaysOnState == NfcAdapter.STATE_OFF || mAlwaysOnState == NfcAdapter.STATE_ON) { synchronized (mAlwaysOnListeners) { for (INfcControllerAlwaysOnListener listener : mAlwaysOnListeners) { try { listener.onControllerAlwaysOnChanged( mAlwaysOnState == NfcAdapter.STATE_ON); } catch (RemoteException e) { Log.e(TAG, "error in updateAlwaysOnState"); } } } } } } int getAlwaysOnState() { synchronized (NfcService.this) { if (!mIsAlwaysOnSupported) { return NfcAdapter.STATE_OFF; } else { return mAlwaysOnState; } } } } public void playSound(int sound) { synchronized (this) { if (mSoundPool == null) { Log.w(TAG, "Not playing sound when NFC is disabled"); return; } if (mVrManager != null && mVrManager.isVrModeEnabled()) { Log.d(TAG, "Not playing NFC sound when Vr Mode is enabled"); return; } switch (sound) { case SOUND_START: mSoundPool.play(mStartSound, 1.0f, 1.0f, 0, 0, 1.0f); break; case SOUND_END: mSoundPool.play(mEndSound, 1.0f, 1.0f, 0, 0, 1.0f); break; case SOUND_ERROR: mSoundPool.play(mErrorSound, 1.0f, 1.0f, 0, 0, 1.0f); break; } } } synchronized int getUserId() { return mUserId; } private void resetReaderModeParams() { synchronized (NfcService.this) { if (mPollingDisableDeathRecipients.size() == 0) { Log.d(TAG, "Disabling reader mode because app died or moved to background"); mReaderModeParams = null; StopPresenceChecking(); if (isNfcEnabled()) { applyRouting(false); } } } } @Override public void onUidToBackground(int uid) { Log.i(TAG, "Uid " + uid + " switch to background."); synchronized (NfcService.this) { if (mReaderModeParams != null && mReaderModeParams.uid == uid) { mReaderModeParams.binder.unlinkToDeath(mReaderModeDeathRecipient, 0); resetReaderModeParams(); } } } public boolean isSecureNfcEnabled() { return mIsSecureNfcEnabled; } final class NfcAdapterService extends INfcAdapter.Stub { @Override public boolean enable() throws RemoteException { NfcPermissions.enforceAdminPermissions(mContext); saveNfcOnSetting(true); if (shouldEnableNfc()) { new EnableDisableTask().execute(TASK_ENABLE); } return true; } @Override public boolean disable(boolean saveState) throws RemoteException { NfcPermissions.enforceAdminPermissions(mContext); if (saveState) { saveNfcOnSetting(false); } new EnableDisableTask().execute(TASK_DISABLE); return true; } @Override public void pausePolling(int timeoutInMs) { NfcPermissions.enforceAdminPermissions(mContext); if (timeoutInMs <= 0 || timeoutInMs > MAX_POLLING_PAUSE_TIMEOUT) { Log.e(TAG, "Refusing to pause polling for " + timeoutInMs + "ms."); return; } synchronized (NfcService.this) { mPollingPaused = true; mDeviceHost.disableDiscovery(); mHandler.sendMessageDelayed( mHandler.obtainMessage(MSG_RESUME_POLLING), timeoutInMs); } } @Override public void resumePolling() { NfcPermissions.enforceAdminPermissions(mContext); synchronized (NfcService.this) { if (!mPollingPaused) { return; } mHandler.removeMessages(MSG_RESUME_POLLING); mPollingPaused = false; new ApplyRoutingTask().execute(); } if (DBG) Log.d(TAG, "Polling is resumed"); } @Override public boolean isNfcSecureEnabled() throws RemoteException { synchronized (NfcService.this) { return mIsSecureNfcEnabled; } } @Override public boolean setNfcSecure(boolean enable) { NfcPermissions.enforceAdminPermissions(mContext); if(mKeyguard.isKeyguardLocked() && !enable) { Log.i(TAG, "KeyGuard need to be unlocked before setting Secure NFC OFF"); return false; } synchronized (NfcService.this) { if (mIsSecureNfcEnabled == enable) { Log.e(TAG, "setNfcSecure error, can't apply the same state twice!"); return false; } Log.i(TAG, "setting Secure NFC " + enable); mPrefsEditor.putBoolean(PREF_SECURE_NFC_ON, enable); mPrefsEditor.apply(); mIsSecureNfcEnabled = enable; mBackupManager.dataChanged(); mDeviceHost.setNfcSecure(enable); if (mIsHceCapable) { // update HCE/HCEF routing and commitRouting if Nfc is enabled mCardEmulationManager.onSecureNfcToggled(); } else if (isNfcEnabled()) { // commit only tech/protocol route without HCE support mDeviceHost.commitRouting(); } } NfcStatsLog.write(NfcStatsLog.NFC_STATE_CHANGED, mIsSecureNfcEnabled ? NfcStatsLog.NFC_STATE_CHANGED__STATE__ON_LOCKED : NfcStatsLog.NFC_STATE_CHANGED__STATE__ON); return true; } @Override public void setForegroundDispatch(PendingIntent intent, IntentFilter[] filters, TechListParcel techListsParcel) { NfcPermissions.enforceUserPermissions(mContext); if (!mForegroundUtils.isInForeground(Binder.getCallingUid())) { Log.e(TAG, "setForegroundDispatch: Caller not in foreground."); return; } // Short-cut the disable path if (intent == null && filters == null && techListsParcel == null) { mNfcDispatcher.setForegroundDispatch(null, null, null); return; } // Validate the IntentFilters if (filters != null) { if (filters.length == 0) { filters = null; } else { for (IntentFilter filter : filters) { if (filter == null) { throw new IllegalArgumentException("null IntentFilter"); } } } } // Validate the tech lists String[][] techLists = null; if (techListsParcel != null) { techLists = techListsParcel.getTechLists(); } mNfcDispatcher.setForegroundDispatch(intent, filters, techLists); } @Override public void setAppCallback(IAppCallback callback) { NfcPermissions.enforceUserPermissions(mContext); } @Override public boolean ignore(int nativeHandle, int debounceMs, ITagRemovedCallback callback) throws RemoteException { NfcPermissions.enforceUserPermissions(mContext); if (debounceMs == 0 && mDebounceTagNativeHandle != INVALID_NATIVE_HANDLE && nativeHandle == mDebounceTagNativeHandle) { // Remove any previous messages and immediately debounce. mHandler.removeMessages(MSG_TAG_DEBOUNCE); mHandler.sendEmptyMessage(MSG_TAG_DEBOUNCE); return true; } TagEndpoint tag = (TagEndpoint) findAndRemoveObject(nativeHandle); if (tag != null) { // Store UID and params int uidLength = tag.getUid().length; synchronized (NfcService.this) { mDebounceTagDebounceMs = debounceMs; mDebounceTagNativeHandle = nativeHandle; mDebounceTagUid = new byte[uidLength]; mDebounceTagRemovedCallback = callback; System.arraycopy(tag.getUid(), 0, mDebounceTagUid, 0, uidLength); } // Disconnect from this tag; this should resume the normal // polling loop (and enter listen mode for a while), before // we pick up any tags again. tag.disconnect(); mHandler.sendEmptyMessageDelayed(MSG_TAG_DEBOUNCE, debounceMs); return true; } else { return false; } } @Override public void verifyNfcPermission() { NfcPermissions.enforceUserPermissions(mContext); } @Override public INfcTag getNfcTagInterface() throws RemoteException { return mNfcTagService; } @Override public INfcCardEmulation getNfcCardEmulationInterface() { if (mIsHceCapable) { return mCardEmulationManager.getNfcCardEmulationInterface(); } else { return null; } } @Override public INfcFCardEmulation getNfcFCardEmulationInterface() { if (mIsHceFCapable) { return mCardEmulationManager.getNfcFCardEmulationInterface(); } else { return null; } } @Override public int getState() throws RemoteException { synchronized (NfcService.this) { return mState; } } @Override protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { NfcService.this.dump(fd, pw, args); } @Override public void dispatch(Tag tag) throws RemoteException { NfcPermissions.enforceAdminPermissions(mContext); mNfcDispatcher.dispatchTag(tag); } @Override public void setReaderMode(IBinder binder, IAppCallback callback, int flags, Bundle extras) throws RemoteException { boolean privilegedCaller = false; int callingUid = Binder.getCallingUid(); int callingPid = Binder.getCallingPid(); // Allow non-foreground callers with system uid or systemui String packageName = getPackageNameFromUid(callingUid); if (packageName != null) { privilegedCaller = (callingUid == Process.SYSTEM_UID || packageName.equals(SYSTEM_UI)); } else { privilegedCaller = (callingUid == Process.SYSTEM_UID); } Log.d(TAG, "setReaderMode: uid=" + callingUid + ", packageName: " + packageName + ", flags: " + flags); if (!privilegedCaller && !mForegroundUtils.registerUidToBackgroundCallback( NfcService.this, callingUid)) { Log.e(TAG, "setReaderMode: Caller is not in foreground and is not system process."); return; } boolean disablePolling = flags != 0 && getReaderModeTechMask(flags) == 0; // Only allow to disable polling for specific callers if (disablePolling && !(privilegedCaller && mPollingDisableAllowed)) { Log.e(TAG, "setReaderMode() called with invalid flag parameter."); return; } synchronized (NfcService.this) { if (!isNfcEnabled() && !privilegedCaller) { Log.e(TAG, "setReaderMode() called while NFC is not enabled."); return; } if (flags != 0) { try { if (disablePolling) { ReaderModeDeathRecipient pollingDisableDeathRecipient = new ReaderModeDeathRecipient(); binder.linkToDeath(pollingDisableDeathRecipient, 0); mPollingDisableDeathRecipients.put( callingPid, pollingDisableDeathRecipient); } else { if (mPollingDisableDeathRecipients.size() != 0) { Log.e(TAG, "active polling is forced to disable now."); return; } binder.linkToDeath(mReaderModeDeathRecipient, 0); } if (mPollDelayed) { mHandler.removeMessages(MSG_DELAY_POLLING); mPollDelayCount = 0; mPollDelayed = false; mDeviceHost.startStopPolling(true); if (DBG) Log.d(TAG, "setReaderMode() polling is started"); } updateReaderModeParams(callback, flags, extras, binder, callingUid); } catch (RemoteException e) { Log.e(TAG, "Remote binder has already died."); return; } } else { try { ReaderModeDeathRecipient pollingDisableDeathRecipient = mPollingDisableDeathRecipients.get(callingPid); mPollingDisableDeathRecipients.remove(callingPid); if (mPollingDisableDeathRecipients.size() == 0) { mReaderModeParams = null; StopPresenceChecking(); } if (pollingDisableDeathRecipient != null) { binder.unlinkToDeath(pollingDisableDeathRecipient, 0); } else { binder.unlinkToDeath(mReaderModeDeathRecipient, 0); } } catch (NoSuchElementException e) { Log.e(TAG, "Reader mode Binder was never registered."); } } if (isNfcEnabled()) { applyRouting(false); } } } @Override public INfcAdapterExtras getNfcAdapterExtrasInterface(String pkg) throws RemoteException { // nfc-extras implementation is no longer present in AOSP. return null; } @Override public INfcDta getNfcDtaInterface(String pkg) throws RemoteException { NfcPermissions.enforceAdminPermissions(mContext); if (mNfcDtaService == null) { mNfcDtaService = new NfcDtaService(); } return mNfcDtaService; } @Override public void addNfcUnlockHandler(INfcUnlockHandler unlockHandler, int[] techList) { NfcPermissions.enforceAdminPermissions(mContext); int lockscreenPollMask = computeLockscreenPollMask(techList); synchronized (NfcService.this) { mNfcUnlockManager.addUnlockHandler(unlockHandler, lockscreenPollMask); } applyRouting(false); } @Override public void removeNfcUnlockHandler(INfcUnlockHandler token) throws RemoteException { synchronized (NfcService.this) { mNfcUnlockManager.removeUnlockHandler(token.asBinder()); } applyRouting(false); } @Override public boolean deviceSupportsNfcSecure() { String skuList[] = mContext.getResources().getStringArray( R.array.config_skuSupportsSecureNfc); String sku = SystemProperties.get("ro.boot.hardware.sku"); if (TextUtils.isEmpty(sku) || !Utils.arrayContains(skuList, sku)) { return false; } return true; } @Override public NfcAntennaInfo getNfcAntennaInfo() { int positionX[] = mContext.getResources().getIntArray( R.array.antenna_x); int positionY[] = mContext.getResources().getIntArray( R.array.antenna_y); if(positionX.length != positionY.length){ return null; } int width = mContext.getResources().getInteger(R.integer.device_width); int height = mContext.getResources().getInteger(R.integer.device_height); List availableNfcAntennas = new ArrayList<>(); for(int i = 0; i < positionX.length; i++){ if(positionX[i] >= width | positionY[i] >= height){ return null; } availableNfcAntennas.add(new AvailableNfcAntenna(positionX[i], positionY[i])); } return new NfcAntennaInfo( width, height, mContext.getResources().getBoolean(R.bool.device_foldable), availableNfcAntennas); } private int computeLockscreenPollMask(int[] techList) { Map techCodeToMask = new HashMap(); techCodeToMask.put(TagTechnology.NFC_A, NfcService.NFC_POLL_A); techCodeToMask.put(TagTechnology.NFC_B, NfcService.NFC_POLL_B); techCodeToMask.put(TagTechnology.NFC_V, NfcService.NFC_POLL_V); techCodeToMask.put(TagTechnology.NFC_F, NfcService.NFC_POLL_F); techCodeToMask.put(TagTechnology.NFC_BARCODE, NfcService.NFC_POLL_KOVIO); int mask = 0; for (int i = 0; i < techList.length; i++) { if (techCodeToMask.containsKey(techList[i])) { mask |= techCodeToMask.get(techList[i]).intValue(); } } return mask; } private int getReaderModeTechMask(int flags) { int techMask = 0; if ((flags & NfcAdapter.FLAG_READER_NFC_A) != 0) { techMask |= NFC_POLL_A; } if ((flags & NfcAdapter.FLAG_READER_NFC_B) != 0) { techMask |= NFC_POLL_B; } if ((flags & NfcAdapter.FLAG_READER_NFC_F) != 0) { techMask |= NFC_POLL_F; } if ((flags & NfcAdapter.FLAG_READER_NFC_V) != 0) { techMask |= NFC_POLL_V; } if ((flags & NfcAdapter.FLAG_READER_NFC_BARCODE) != 0) { techMask |= NFC_POLL_KOVIO; } return techMask; } private String getPackageNameFromUid(int uid) { PackageManager packageManager = mContext.getPackageManager(); if (packageManager != null) { String[] packageName = packageManager.getPackagesForUid(uid); if (packageName != null && packageName.length > 0) { return packageName[0]; } } return null; } private void updateReaderModeParams( IAppCallback callback, int flags, Bundle extras, IBinder binder, int uid) { synchronized (NfcService.this) { mReaderModeParams = new ReaderModeParams(); mReaderModeParams.callback = callback; mReaderModeParams.flags = flags; mReaderModeParams.presenceCheckDelay = extras != null ? (extras.getInt(NfcAdapter.EXTRA_READER_PRESENCE_CHECK_DELAY, DEFAULT_PRESENCE_CHECK_DELAY)) : DEFAULT_PRESENCE_CHECK_DELAY; mReaderModeParams.binder = binder; mReaderModeParams.uid = uid; } } private int setTagAppPreferenceInternal(int userId, String pkg, boolean allow) { if (!isPackageInstalled(pkg, userId)) { return NfcAdapter.TAG_INTENT_APP_PREF_RESULT_PACKAGE_NOT_FOUND; } if (DBG) Log.i(TAG, "UserId:" + userId + " pkg:" + pkg + ":" + allow); synchronized (NfcService.this) { mTagAppPrefList.computeIfAbsent(userId, key -> new HashMap()) .put(pkg, allow); } storeTagAppPrefList(); return NfcAdapter.TAG_INTENT_APP_PREF_RESULT_SUCCESS; } @Override public boolean setControllerAlwaysOn(boolean value) throws RemoteException { NfcPermissions.enforceSetControllerAlwaysOnPermissions(mContext); if (!mIsAlwaysOnSupported) { return false; } if (value) { new EnableDisableTask().execute(TASK_ENABLE_ALWAYS_ON); } else { new EnableDisableTask().execute(TASK_DISABLE_ALWAYS_ON); } return true; } @Override public boolean isControllerAlwaysOn() throws RemoteException { NfcPermissions.enforceSetControllerAlwaysOnPermissions(mContext); return mIsAlwaysOnSupported && mAlwaysOnState == NfcAdapter.STATE_ON; } @Override public boolean isControllerAlwaysOnSupported() throws RemoteException { NfcPermissions.enforceSetControllerAlwaysOnPermissions(mContext); return mIsAlwaysOnSupported; } @Override public void registerControllerAlwaysOnListener( INfcControllerAlwaysOnListener listener) throws RemoteException { NfcPermissions.enforceSetControllerAlwaysOnPermissions(mContext); if (!mIsAlwaysOnSupported) return; mAlwaysOnListeners.add(listener); } @Override public void unregisterControllerAlwaysOnListener( INfcControllerAlwaysOnListener listener) throws RemoteException { NfcPermissions.enforceSetControllerAlwaysOnPermissions(mContext); if (!mIsAlwaysOnSupported) return; mAlwaysOnListeners.remove(listener); } @Override public boolean isTagIntentAppPreferenceSupported() throws RemoteException { NfcPermissions.enforceAdminPermissions(mContext); return mIsTagAppPrefSupported; } @Override public Map getTagIntentAppPreferenceForUser(int userId) throws RemoteException { NfcPermissions.enforceAdminPermissions(mContext); if (!mIsTagAppPrefSupported) throw new UnsupportedOperationException(); synchronized (NfcService.this) { return mTagAppPrefList.getOrDefault(userId, new HashMap<>()); } } @Override public int setTagIntentAppPreferenceForUser(int userId, String pkg, boolean allow) throws RemoteException { NfcPermissions.enforceAdminPermissions(mContext); if (!mIsTagAppPrefSupported) throw new UnsupportedOperationException(); return setTagAppPreferenceInternal(userId, pkg, allow); } } final class SeServiceDeathRecipient implements IBinder.DeathRecipient { @Override public void binderDied() { synchronized (NfcService.this) { Log.i(TAG, "SE Service died"); mSEService = null; } } } final class ReaderModeDeathRecipient implements IBinder.DeathRecipient { @Override public void binderDied() { synchronized (NfcService.this) { if (mReaderModeParams != null) { mPollingDisableDeathRecipients.values().remove(this); resetReaderModeParams(); } } } } final class TagService extends INfcTag.Stub { @Override public int connect(int nativeHandle, int technology) throws RemoteException { NfcPermissions.enforceUserPermissions(mContext); TagEndpoint tag = null; if (!isNfcEnabled()) { return ErrorCodes.ERROR_NOT_INITIALIZED; } /* find the tag in the hmap */ tag = (TagEndpoint) findObject(nativeHandle); if (tag == null) { return ErrorCodes.ERROR_DISCONNECT; } if (!tag.isPresent()) { return ErrorCodes.ERROR_DISCONNECT; } // Note that on most tags, all technologies are behind a single // handle. This means that the connect at the lower levels // will do nothing, as the tag is already connected to that handle. if (tag.connect(technology)) { return ErrorCodes.SUCCESS; } else { return ErrorCodes.ERROR_DISCONNECT; } } @Override public int reconnect(int nativeHandle) throws RemoteException { NfcPermissions.enforceUserPermissions(mContext); TagEndpoint tag = null; // Check if NFC is enabled if (!isNfcEnabled()) { return ErrorCodes.ERROR_NOT_INITIALIZED; } /* find the tag in the hmap */ tag = (TagEndpoint) findObject(nativeHandle); if (tag != null) { if (tag.reconnect()) { return ErrorCodes.SUCCESS; } else { return ErrorCodes.ERROR_DISCONNECT; } } return ErrorCodes.ERROR_DISCONNECT; } @Override public int[] getTechList(int nativeHandle) throws RemoteException { NfcPermissions.enforceUserPermissions(mContext); // Check if NFC is enabled if (!isNfcEnabled()) { return null; } /* find the tag in the hmap */ TagEndpoint tag = (TagEndpoint) findObject(nativeHandle); if (tag != null) { return tag.getTechList(); } return null; } @Override public boolean isPresent(int nativeHandle) throws RemoteException { TagEndpoint tag = null; // Check if NFC is enabled if (!isNfcEnabled()) { return false; } /* find the tag in the hmap */ tag = (TagEndpoint) findObject(nativeHandle); if (tag == null) { return false; } return tag.isPresent(); } @Override public boolean isNdef(int nativeHandle) throws RemoteException { NfcPermissions.enforceUserPermissions(mContext); TagEndpoint tag = null; // Check if NFC is enabled if (!isNfcEnabled()) { return false; } /* find the tag in the hmap */ tag = (TagEndpoint) findObject(nativeHandle); int[] ndefInfo = new int[2]; if (tag == null) { return false; } return tag.checkNdef(ndefInfo); } @Override public TransceiveResult transceive(int nativeHandle, byte[] data, boolean raw) throws RemoteException { NfcPermissions.enforceUserPermissions(mContext); TagEndpoint tag = null; byte[] response; // Check if NFC is enabled if (!isNfcEnabled()) { return null; } /* find the tag in the hmap */ tag = (TagEndpoint) findObject(nativeHandle); if (tag != null) { // Check if length is within limits if (data.length > getMaxTransceiveLength(tag.getConnectedTechnology())) { return new TransceiveResult(TransceiveResult.RESULT_EXCEEDED_LENGTH, null); } int[] targetLost = new int[1]; response = tag.transceive(data, raw, targetLost); int result; if (response != null) { result = TransceiveResult.RESULT_SUCCESS; } else if (targetLost[0] == 1) { result = TransceiveResult.RESULT_TAGLOST; } else { result = TransceiveResult.RESULT_FAILURE; } return new TransceiveResult(result, response); } return null; } @Override public NdefMessage ndefRead(int nativeHandle) throws RemoteException { NfcPermissions.enforceUserPermissions(mContext); TagEndpoint tag; // Check if NFC is enabled if (!isNfcEnabled()) { return null; } /* find the tag in the hmap */ tag = (TagEndpoint) findObject(nativeHandle); if (tag != null) { byte[] buf = tag.readNdef(); if (buf == null) { return null; } /* Create an NdefMessage */ try { return new NdefMessage(buf); } catch (FormatException e) { return null; } } return null; } @Override public int ndefWrite(int nativeHandle, NdefMessage msg) throws RemoteException { NfcPermissions.enforceUserPermissions(mContext); TagEndpoint tag; // Check if NFC is enabled if (!isNfcEnabled()) { return ErrorCodes.ERROR_NOT_INITIALIZED; } /* find the tag in the hmap */ tag = (TagEndpoint) findObject(nativeHandle); if (tag == null) { return ErrorCodes.ERROR_IO; } if (msg == null) return ErrorCodes.ERROR_INVALID_PARAM; if (tag.writeNdef(msg.toByteArray())) { return ErrorCodes.SUCCESS; } else { return ErrorCodes.ERROR_IO; } } @Override public boolean ndefIsWritable(int nativeHandle) throws RemoteException { throw new UnsupportedOperationException(); } @Override public int ndefMakeReadOnly(int nativeHandle) throws RemoteException { NfcPermissions.enforceUserPermissions(mContext); TagEndpoint tag; // Check if NFC is enabled if (!isNfcEnabled()) { return ErrorCodes.ERROR_NOT_INITIALIZED; } /* find the tag in the hmap */ tag = (TagEndpoint) findObject(nativeHandle); if (tag == null) { return ErrorCodes.ERROR_IO; } if (tag.makeReadOnly()) { return ErrorCodes.SUCCESS; } else { return ErrorCodes.ERROR_IO; } } @Override public int formatNdef(int nativeHandle, byte[] key) throws RemoteException { NfcPermissions.enforceUserPermissions(mContext); TagEndpoint tag; // Check if NFC is enabled if (!isNfcEnabled()) { return ErrorCodes.ERROR_NOT_INITIALIZED; } /* find the tag in the hmap */ tag = (TagEndpoint) findObject(nativeHandle); if (tag == null) { return ErrorCodes.ERROR_IO; } if (tag.formatNdef(key)) { return ErrorCodes.SUCCESS; } else { return ErrorCodes.ERROR_IO; } } @Override public Tag rediscover(int nativeHandle) throws RemoteException { NfcPermissions.enforceUserPermissions(mContext); TagEndpoint tag = null; // Check if NFC is enabled if (!isNfcEnabled()) { return null; } /* find the tag in the hmap */ tag = (TagEndpoint) findObject(nativeHandle); if (tag != null) { // For now the prime usecase for rediscover() is to be able // to access the NDEF technology after formatting without // having to remove the tag from the field, or similar // to have access to NdefFormatable in case low-level commands // were used to remove NDEF. So instead of doing a full stack // rediscover (which is poorly supported at the moment anyway), // we simply remove these two technologies and detect them // again. tag.removeTechnology(TagTechnology.NDEF); tag.removeTechnology(TagTechnology.NDEF_FORMATABLE); tag.findAndReadNdef(); // Build a new Tag object to return try { /* Avoid setting mCookieUpToDate to negative values */ mCookieUpToDate = mCookieGenerator.nextLong() >>> 1; Tag newTag = new Tag(tag.getUid(), tag.getTechList(), tag.getTechExtras(), tag.getHandle(), mCookieUpToDate, this); return newTag; } catch (Exception e) { Log.e(TAG, "Tag creation exception.", e); return null; } } return null; } @Override public int setTimeout(int tech, int timeout) throws RemoteException { NfcPermissions.enforceUserPermissions(mContext); boolean success = mDeviceHost.setTimeout(tech, timeout); if (success) { return ErrorCodes.SUCCESS; } else { return ErrorCodes.ERROR_INVALID_PARAM; } } @Override public int getTimeout(int tech) throws RemoteException { NfcPermissions.enforceUserPermissions(mContext); return mDeviceHost.getTimeout(tech); } @Override public void resetTimeouts() throws RemoteException { NfcPermissions.enforceUserPermissions(mContext); mDeviceHost.resetTimeouts(); } @Override public boolean canMakeReadOnly(int ndefType) throws RemoteException { return mDeviceHost.canMakeReadOnly(ndefType); } @Override public int getMaxTransceiveLength(int tech) throws RemoteException { return mDeviceHost.getMaxTransceiveLength(tech); } @Override public boolean getExtendedLengthApdusSupported() throws RemoteException { return mDeviceHost.getExtendedLengthApdusSupported(); } @Override public boolean isTagUpToDate(long cookie) throws RemoteException { if (mCookieUpToDate != -1 && mCookieUpToDate == cookie) { if (DBG) Log.d(TAG, "Tag " + Long.toString(cookie) + " is up to date"); return true; } if (DBG) Log.d(TAG, "Tag " + Long.toString(cookie) + " is out of date"); EventLog.writeEvent(0x534e4554, "199291025", -1, "The obsolete tag was attempted to be accessed"); return false; } } final class NfcDtaService extends INfcDta.Stub { public void enableDta() throws RemoteException { NfcPermissions.enforceAdminPermissions(mContext); if(!sIsDtaMode) { mDeviceHost.enableDtaMode(); sIsDtaMode = true; Log.d(TAG, "DTA Mode is Enabled "); } } public void disableDta() throws RemoteException { NfcPermissions.enforceAdminPermissions(mContext); if(sIsDtaMode) { mDeviceHost.disableDtaMode(); sIsDtaMode = false; } } public boolean enableServer(String serviceName, int serviceSap, int miu, int rwSize,int testCaseId) throws RemoteException { NfcPermissions.enforceAdminPermissions(mContext); return false; } public void disableServer() throws RemoteException { } public boolean enableClient(String serviceName, int miu, int rwSize, int testCaseId) throws RemoteException { NfcPermissions.enforceAdminPermissions(mContext); return false; } public void disableClient() throws RemoteException { return; } public boolean registerMessageService(String msgServiceName) throws RemoteException { NfcPermissions.enforceAdminPermissions(mContext); if(msgServiceName == null) return false; DtaServiceConnector.setMessageService(msgServiceName); return true; } }; boolean isNfcEnabledOrShuttingDown() { synchronized (this) { return (mState == NfcAdapter.STATE_ON || mState == NfcAdapter.STATE_TURNING_OFF); } } boolean isNfcEnabled() { synchronized (this) { return mState == NfcAdapter.STATE_ON; } } class WatchDogThread extends Thread { final Object mCancelWaiter = new Object(); final int mTimeout; boolean mCanceled = false; public WatchDogThread(String threadName, int timeout) { super(threadName); mTimeout = timeout; } @Override public void run() { try { synchronized (mCancelWaiter) { mCancelWaiter.wait(mTimeout); if (mCanceled) { return; } } } catch (InterruptedException e) { // Should not happen; fall-through to abort. Log.w(TAG, "Watchdog thread interruped."); interrupt(); } if(mRoutingWakeLock.isHeld()){ Log.e(TAG, "Watchdog triggered, release lock before aborting."); mRoutingWakeLock.release(); } Log.e(TAG, "Watchdog triggered, aborting."); NfcStatsLog.write(NfcStatsLog.NFC_STATE_CHANGED, NfcStatsLog.NFC_STATE_CHANGED__STATE__CRASH_RESTART); storeNativeCrashLogs(); mDeviceHost.doAbort(getName()); } public synchronized void cancel() { synchronized (mCancelWaiter) { mCanceled = true; mCancelWaiter.notify(); } } } static byte[] hexStringToBytes(String s) { if (s == null || s.length() == 0) return null; int len = s.length(); if (len % 2 != 0) { s = '0' + s; len++; } byte[] data = new byte[len / 2]; for (int i = 0; i < len; i += 2) { data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character.digit(s.charAt(i + 1), 16)); } return data; } private void addKeyguardLockedStateListener() { try { mKeyguard.addKeyguardLockedStateListener(mContext.getMainExecutor(), mIKeyguardLockedStateListener); } catch (Exception e) { Log.e(TAG, "Exception in addKeyguardLockedStateListener " + e); } } /** * Receives KeyGuard lock state updates */ private KeyguardLockedStateListener mIKeyguardLockedStateListener = new KeyguardLockedStateListener() { @Override public void onKeyguardLockedStateChanged(boolean isKeyguardLocked) { applyScreenState(mScreenStateHelper.checkScreenState()); } }; /** * Read mScreenState and apply NFC-C polling and NFC-EE routing */ void applyRouting(boolean force) { synchronized (this) { if (!isNfcEnabledOrShuttingDown()) { return; } WatchDogThread watchDog = new WatchDogThread("applyRouting", ROUTING_WATCHDOG_MS); if (mInProvisionMode) { mInProvisionMode = Settings.Global.getInt(mContentResolver, Settings.Global.DEVICE_PROVISIONED, 0) == 0; if (!mInProvisionMode) { // Notify dispatcher it's fine to dispatch to any package now // and allow handover transfers. mNfcDispatcher.disableProvisioningMode(); } } // Special case: if we're transitioning to unlocked state while // still talking to a tag, postpone re-configuration. if (mScreenState == ScreenStateHelper.SCREEN_STATE_ON_UNLOCKED && isTagPresent()) { Log.d(TAG, "Not updating discovery parameters, tag connected."); mHandler.sendMessageDelayed(mHandler.obtainMessage(MSG_RESUME_POLLING), APPLY_ROUTING_RETRY_TIMEOUT_MS); return; } try { watchDog.start(); // Compute new polling parameters NfcDiscoveryParameters newParams = computeDiscoveryParameters(mScreenState); if (force || !newParams.equals(mCurrentDiscoveryParameters)) { if (newParams.shouldEnableDiscovery()) { boolean shouldRestart = mCurrentDiscoveryParameters.shouldEnableDiscovery(); mDeviceHost.enableDiscovery(newParams, shouldRestart); } else { mDeviceHost.disableDiscovery(); } mCurrentDiscoveryParameters = newParams; } else { Log.d(TAG, "Discovery configuration equal, not updating."); } } finally { watchDog.cancel(); } } } private NfcDiscoveryParameters computeDiscoveryParameters(int screenState) { // Recompute discovery parameters based on screen state NfcDiscoveryParameters.Builder paramsBuilder = NfcDiscoveryParameters.newBuilder(); // Polling if (screenState >= NFC_POLLING_MODE) { // Check if reader-mode is enabled if (mReaderModeParams != null) { int techMask = 0; if ((mReaderModeParams.flags & NfcAdapter.FLAG_READER_NFC_A) != 0) techMask |= NFC_POLL_A; if ((mReaderModeParams.flags & NfcAdapter.FLAG_READER_NFC_B) != 0) techMask |= NFC_POLL_B; if ((mReaderModeParams.flags & NfcAdapter.FLAG_READER_NFC_F) != 0) techMask |= NFC_POLL_F; if ((mReaderModeParams.flags & NfcAdapter.FLAG_READER_NFC_V) != 0) techMask |= NFC_POLL_V; if ((mReaderModeParams.flags & NfcAdapter.FLAG_READER_NFC_BARCODE) != 0) techMask |= NFC_POLL_KOVIO; paramsBuilder.setTechMask(techMask); paramsBuilder.setEnableReaderMode(true); if (mReaderModeParams.flags != 0 && techMask == 0) { paramsBuilder.setEnableHostRouting(true); } } else { paramsBuilder.setTechMask(NfcDiscoveryParameters.NFC_POLL_DEFAULT); paramsBuilder.setEnableP2p(false); } } else if (screenState == ScreenStateHelper.SCREEN_STATE_ON_LOCKED && mInProvisionMode) { paramsBuilder.setTechMask(NfcDiscoveryParameters.NFC_POLL_DEFAULT); // enable P2P for MFM/EDU/Corp provisioning paramsBuilder.setEnableP2p(false); } else if (screenState == ScreenStateHelper.SCREEN_STATE_ON_LOCKED && mNfcUnlockManager.isLockscreenPollingEnabled()) { int techMask = 0; if (mNfcUnlockManager.isLockscreenPollingEnabled()) techMask |= mNfcUnlockManager.getLockscreenPollMask(); paramsBuilder.setTechMask(techMask); paramsBuilder.setEnableLowPowerDiscovery(false); paramsBuilder.setEnableP2p(false); } if (mIsHceCapable && mReaderModeParams == null) { // Host routing is always enabled, provided we aren't in reader mode paramsBuilder.setEnableHostRouting(true); } return paramsBuilder.build(); } private boolean isTagPresent() { for (Object object : mObjectMap.values()) { if (object instanceof TagEndpoint) { return ((TagEndpoint) object).isPresent(); } } return false; } private void StopPresenceChecking() { Object[] objectValues = mObjectMap.values().toArray(); for (Object object : objectValues) { if (object instanceof TagEndpoint) { TagEndpoint tag = (TagEndpoint)object; ((TagEndpoint) object).stopPresenceChecking(); } } } /** * Disconnect any target if present */ void maybeDisconnectTarget() { if (!isNfcEnabledOrShuttingDown()) { return; } Object[] objectsToDisconnect; synchronized (this) { Object[] objectValues = mObjectMap.values().toArray(); // Copy the array before we clear mObjectMap, // just in case the HashMap values are backed by the same array objectsToDisconnect = Arrays.copyOf(objectValues, objectValues.length); mObjectMap.clear(); } for (Object o : objectsToDisconnect) { if (DBG) Log.d(TAG, "disconnecting " + o.getClass().getName()); if (o instanceof TagEndpoint) { // Disconnect from tags TagEndpoint tag = (TagEndpoint) o; tag.disconnect(); } else if (o instanceof NfcDepEndpoint) { // Disconnect from P2P devices NfcDepEndpoint device = (NfcDepEndpoint) o; if (device.getMode() == NfcDepEndpoint.MODE_P2P_TARGET) { // Remote peer is target, request disconnection device.disconnect(); } else { // Remote peer is initiator, we cannot disconnect // Just wait for field removal } } } } Object findObject(int key) { synchronized (this) { Object device = mObjectMap.get(key); if (device == null) { Log.w(TAG, "Handle not found"); } return device; } } Object findAndRemoveObject(int handle) { synchronized (this) { Object device = mObjectMap.get(handle); if (device == null) { Log.w(TAG, "Handle not found"); } else { mObjectMap.remove(handle); } return device; } } void registerTagObject(TagEndpoint tag) { synchronized (this) { mObjectMap.put(tag.getHandle(), tag); } } void unregisterObject(int handle) { synchronized (this) { mObjectMap.remove(handle); } } /** * For use by code in this process */ public LlcpSocket createLlcpSocket(int sap, int miu, int rw, int linearBufferLength) throws LlcpException { return mDeviceHost.createLlcpSocket(sap, miu, rw, linearBufferLength); } /** * For use by code in this process */ public LlcpConnectionlessSocket createLlcpConnectionLessSocket(int sap, String sn) throws LlcpException { return mDeviceHost.createLlcpConnectionlessSocket(sap, sn); } /** * For use by code in this process */ public LlcpServerSocket createLlcpServerSocket(int sap, String sn, int miu, int rw, int linearBufferLength) throws LlcpException { return mDeviceHost.createLlcpServerSocket(sap, sn, miu, rw, linearBufferLength); } public int getAidRoutingTableSize () { int aidTableSize = 0x00; aidTableSize = mDeviceHost.getAidTableSize(); return aidTableSize; } public void sendMockNdefTag(NdefMessage msg) { sendMessage(MSG_MOCK_NDEF, msg); } public void routeAids(String aid, int route, int aidInfo, int power) { Message msg = mHandler.obtainMessage(); msg.what = MSG_ROUTE_AID; msg.arg1 = route; msg.obj = aid; msg.arg2 = aidInfo; Bundle aidPowerState = new Bundle(); aidPowerState.putInt(MSG_ROUTE_AID_PARAM_TAG, power); msg.setData(aidPowerState); mHandler.sendMessage(msg); } public void unrouteAids(String aid) { sendMessage(MSG_UNROUTE_AID, aid); } public int getNciVersion() { return mDeviceHost.getNciVersion(); } private byte[] getT3tIdentifierBytes(String systemCode, String nfcId2, String t3tPmm) { ByteBuffer buffer = ByteBuffer.allocate(2 + 8 + 8); /* systemcode + nfcid2 + t3tpmm */ buffer.put(hexStringToBytes(systemCode)); buffer.put(hexStringToBytes(nfcId2)); buffer.put(hexStringToBytes(t3tPmm)); byte[] t3tIdBytes = new byte[buffer.position()]; buffer.position(0); buffer.get(t3tIdBytes); return t3tIdBytes; } public void registerT3tIdentifier(String systemCode, String nfcId2, String t3tPmm) { Log.d(TAG, "request to register LF_T3T_IDENTIFIER"); byte[] t3tIdentifier = getT3tIdentifierBytes(systemCode, nfcId2, t3tPmm); sendMessage(MSG_REGISTER_T3T_IDENTIFIER, t3tIdentifier); } public void deregisterT3tIdentifier(String systemCode, String nfcId2, String t3tPmm) { Log.d(TAG, "request to deregister LF_T3T_IDENTIFIER"); byte[] t3tIdentifier = getT3tIdentifierBytes(systemCode, nfcId2, t3tPmm); sendMessage(MSG_DEREGISTER_T3T_IDENTIFIER, t3tIdentifier); } public void clearT3tIdentifiersCache() { Log.d(TAG, "clear T3t Identifiers Cache"); mDeviceHost.clearT3tIdentifiersCache(); } public int getLfT3tMax() { return mDeviceHost.getLfT3tMax(); } public void commitRouting() { mHandler.sendEmptyMessage(MSG_COMMIT_ROUTING); } public boolean sendData(byte[] data) { return mDeviceHost.sendRawFrame(data); } public void onPreferredPaymentChanged(int reason) { sendMessage(MSG_PREFERRED_PAYMENT_CHANGED, reason); } void sendMessage(int what, Object obj) { Message msg = mHandler.obtainMessage(); msg.what = what; msg.obj = obj; mHandler.sendMessage(msg); } /** * Send require device unlock for NFC intent to system UI. */ public void sendRequireUnlockIntent() { if (!mIsRequestUnlockShowed && mKeyguard.isKeyguardLocked()) { if (DBG) Log.d(TAG, "Request unlock"); mIsRequestUnlockShowed = true; mRequireUnlockWakeLock.acquire(); Intent requireUnlockIntent = new Intent(NfcAdapter.ACTION_REQUIRE_UNLOCK_FOR_NFC); requireUnlockIntent.setPackage(SYSTEM_UI); mContext.sendBroadcast(requireUnlockIntent); mRequireUnlockWakeLock.release(); } } final class NfcServiceHandler extends Handler { @Override public void handleMessage(Message msg) { switch (msg.what) { case MSG_ROUTE_AID: { int route = msg.arg1; int aidInfo = msg.arg2; String aid = (String) msg.obj; int power = 0x00; Bundle bundle = msg.getData(); if (bundle != null) { power = bundle.getInt(MSG_ROUTE_AID_PARAM_TAG); } mDeviceHost.routeAid(hexStringToBytes(aid), route, aidInfo, power); // Restart polling config break; } case MSG_UNROUTE_AID: { String aid = (String) msg.obj; mDeviceHost.unrouteAid(hexStringToBytes(aid)); break; } case MSG_REGISTER_T3T_IDENTIFIER: { Log.d(TAG, "message to register LF_T3T_IDENTIFIER"); mDeviceHost.disableDiscovery(); byte[] t3tIdentifier = (byte[]) msg.obj; mDeviceHost.registerT3tIdentifier(t3tIdentifier); NfcDiscoveryParameters params = computeDiscoveryParameters(mScreenState); boolean shouldRestart = mCurrentDiscoveryParameters.shouldEnableDiscovery(); mDeviceHost.enableDiscovery(params, shouldRestart); break; } case MSG_DEREGISTER_T3T_IDENTIFIER: { Log.d(TAG, "message to deregister LF_T3T_IDENTIFIER"); mDeviceHost.disableDiscovery(); byte[] t3tIdentifier = (byte[]) msg.obj; mDeviceHost.deregisterT3tIdentifier(t3tIdentifier); NfcDiscoveryParameters params = computeDiscoveryParameters(mScreenState); boolean shouldRestart = mCurrentDiscoveryParameters.shouldEnableDiscovery(); mDeviceHost.enableDiscovery(params, shouldRestart); break; } case MSG_COMMIT_ROUTING: { synchronized (NfcService.this) { if (mState == NfcAdapter.STATE_OFF || mState == NfcAdapter.STATE_TURNING_OFF) { Log.d(TAG, "Skip commit routing when NFCC is off or turning off"); return; } if (mCurrentDiscoveryParameters.shouldEnableDiscovery()) { mDeviceHost.commitRouting(); } else { Log.d(TAG, "Not committing routing because discovery is disabled."); } } break; } case MSG_MOCK_NDEF: { NdefMessage ndefMsg = (NdefMessage) msg.obj; Bundle extras = new Bundle(); extras.putParcelable(Ndef.EXTRA_NDEF_MSG, ndefMsg); extras.putInt(Ndef.EXTRA_NDEF_MAXLENGTH, 0); extras.putInt(Ndef.EXTRA_NDEF_CARDSTATE, Ndef.NDEF_MODE_READ_ONLY); extras.putInt(Ndef.EXTRA_NDEF_TYPE, Ndef.TYPE_OTHER); /* Avoid setting mCookieUpToDate to negative values */ mCookieUpToDate = mCookieGenerator.nextLong() >>> 1; Tag tag = Tag.createMockTag(new byte[]{0x00}, new int[]{TagTechnology.NDEF}, new Bundle[]{extras}, mCookieUpToDate); Log.d(TAG, "mock NDEF tag, starting corresponding activity"); Log.d(TAG, tag.toString()); int dispatchStatus = mNfcDispatcher.dispatchTag(tag); if (dispatchStatus == NfcDispatcher.DISPATCH_SUCCESS) { playSound(SOUND_END); } else if (dispatchStatus == NfcDispatcher.DISPATCH_FAIL) { playSound(SOUND_ERROR); } break; } case MSG_NDEF_TAG: if (DBG) Log.d(TAG, "Tag detected, notifying applications"); TagEndpoint tag = (TagEndpoint) msg.obj; byte[] debounceTagUid; int debounceTagMs; ITagRemovedCallback debounceTagRemovedCallback; synchronized (NfcService.this) { debounceTagUid = mDebounceTagUid; debounceTagMs = mDebounceTagDebounceMs; debounceTagRemovedCallback = mDebounceTagRemovedCallback; } ReaderModeParams readerParams = null; int presenceCheckDelay = DEFAULT_PRESENCE_CHECK_DELAY; DeviceHost.TagDisconnectedCallback callback = new DeviceHost.TagDisconnectedCallback() { @Override public void onTagDisconnected(long handle) { mCookieUpToDate = -1; applyRouting(false); } }; synchronized (NfcService.this) { readerParams = mReaderModeParams; } if (readerParams != null) { presenceCheckDelay = readerParams.presenceCheckDelay; if ((readerParams.flags & NfcAdapter.FLAG_READER_SKIP_NDEF_CHECK) != 0) { if (DBG) Log.d(TAG, "Skipping NDEF detection in reader mode"); tag.startPresenceChecking(presenceCheckDelay, callback); dispatchTagEndpoint(tag, readerParams); break; } if (mIsDebugBuild && mSkipNdefRead) { if (DBG) Log.d(TAG, "Only NDEF detection in reader mode"); tag.findNdef(); tag.startPresenceChecking(presenceCheckDelay, callback); dispatchTagEndpoint(tag, readerParams); break; } } if (tag.getConnectedTechnology() == TagTechnology.NFC_BARCODE) { // When these tags start containing NDEF, they will require // the stack to deal with them in a different way, since // they are activated only really shortly. // For now, don't consider NDEF on these. if (DBG) Log.d(TAG, "Skipping NDEF detection for NFC Barcode"); tag.startPresenceChecking(presenceCheckDelay, callback); dispatchTagEndpoint(tag, readerParams); break; } NdefMessage ndefMsg = tag.findAndReadNdef(); if (ndefMsg == null) { // First try to see if this was a bad tag read if (!tag.reconnect()) { tag.disconnect(); if (mScreenState == ScreenStateHelper.SCREEN_STATE_ON_UNLOCKED) { if (!sToast_debounce && mNotifyReadFailed) { Toast.makeText(mContext, R.string.tag_read_error, Toast.LENGTH_SHORT).show(); sToast_debounce = true; mHandler.sendEmptyMessageDelayed(MSG_TOAST_DEBOUNCE_EVENT, sToast_debounce_time_ms); } } break; } } if (debounceTagUid != null) { // If we're debouncing and the UID or the NDEF message of the tag match, // don't dispatch but drop it. if (Arrays.equals(debounceTagUid, tag.getUid()) || (ndefMsg != null && ndefMsg.equals(mLastReadNdefMessage))) { mHandler.removeMessages(MSG_TAG_DEBOUNCE); mHandler.sendEmptyMessageDelayed(MSG_TAG_DEBOUNCE, debounceTagMs); tag.disconnect(); return; } else { synchronized (NfcService.this) { mDebounceTagUid = null; mDebounceTagRemovedCallback = null; mDebounceTagNativeHandle = INVALID_NATIVE_HANDLE; } if (debounceTagRemovedCallback != null) { try { debounceTagRemovedCallback.onTagRemoved(); } catch (RemoteException e) { // Ignore } } } } mLastReadNdefMessage = ndefMsg; tag.startPresenceChecking(presenceCheckDelay, callback); dispatchTagEndpoint(tag, readerParams); break; case MSG_RF_FIELD_ACTIVATED: Intent fieldOnIntent = new Intent(ACTION_RF_FIELD_ON_DETECTED); sendNfcPermissionProtectedBroadcast(fieldOnIntent); if (mIsSecureNfcEnabled) { sendRequireUnlockIntent(); } break; case MSG_RF_FIELD_DEACTIVATED: Intent fieldOffIntent = new Intent(ACTION_RF_FIELD_OFF_DETECTED); sendNfcPermissionProtectedBroadcast(fieldOffIntent); break; case MSG_RESUME_POLLING: mNfcAdapter.resumePolling(); break; case MSG_TAG_DEBOUNCE: // Didn't see the tag again, tag is gone ITagRemovedCallback tagRemovedCallback; synchronized (NfcService.this) { mDebounceTagUid = null; tagRemovedCallback = mDebounceTagRemovedCallback; mDebounceTagRemovedCallback = null; mDebounceTagNativeHandle = INVALID_NATIVE_HANDLE; } if (tagRemovedCallback != null) { try { tagRemovedCallback.onTagRemoved(); } catch (RemoteException e) { // Ignore } } break; case MSG_APPLY_SCREEN_STATE: mScreenState = (Integer)msg.obj; Log.d(TAG, "MSG_APPLY_SCREEN_STATE " + mScreenState); synchronized (NfcService.this) { // Disable delay polling when screen state changed mPollDelayed = false; mHandler.removeMessages(MSG_DELAY_POLLING); // If NFC is turning off, we shouldn't need any changes here if (mState == NfcAdapter.STATE_TURNING_OFF) return; } mRoutingWakeLock.acquire(); try { if (mScreenState == ScreenStateHelper.SCREEN_STATE_ON_UNLOCKED) { applyRouting(false); mIsRequestUnlockShowed = false; } int screen_state_mask = (mNfcUnlockManager.isLockscreenPollingEnabled()) ? (ScreenStateHelper.SCREEN_POLLING_TAG_MASK | mScreenState) : mScreenState; if (mNfcUnlockManager.isLockscreenPollingEnabled()) { applyRouting(false); } mDeviceHost.doSetScreenState(screen_state_mask); } finally { mRoutingWakeLock.release(); } break; case MSG_TRANSACTION_EVENT: if (mCardEmulationManager != null) { mCardEmulationManager.onOffHostAidSelected(); } byte[][] data = (byte[][]) msg.obj; sendOffHostTransactionEvent(data[0], data[1], data[2]); break; case MSG_PREFERRED_PAYMENT_CHANGED: Intent preferredPaymentChangedIntent = new Intent(NfcAdapter.ACTION_PREFERRED_PAYMENT_CHANGED); preferredPaymentChangedIntent.putExtra( NfcAdapter.EXTRA_PREFERRED_PAYMENT_CHANGED_REASON, (int)msg.obj); sendPreferredPaymentChangedEvent(preferredPaymentChangedIntent); break; case MSG_TOAST_DEBOUNCE_EVENT: sToast_debounce = false; break; case MSG_DELAY_POLLING: synchronized (NfcService.this) { if (!mPollDelayed) { return; } mPollDelayed = false; mDeviceHost.startStopPolling(true); } if (DBG) Log.d(TAG, "Polling is started"); break; default: Log.e(TAG, "Unknown message received"); break; } } private void sendOffHostTransactionEvent(byte[] aid, byte[] data, byte[] readerByteArray) { if (!isSEServiceAvailable() || mNfcEventInstalledPackages.isEmpty()) { return; } try { String reader = new String(readerByteArray, "UTF-8"); int uid = -1; StringBuilder aidString = new StringBuilder(aid.length); for (byte b : aid) { aidString.append(String.format("%02X", b)); } for (int userId : mNfcEventInstalledPackages.keySet()) { List packagesOfUser = mNfcEventInstalledPackages.get(userId); String[] installedPackages = new String[packagesOfUser.size()]; boolean[] nfcAccess = mSEService.isNfcEventAllowed(reader, aid, packagesOfUser.toArray(installedPackages), userId); if (nfcAccess == null) { continue; } Intent intent = new Intent(NfcAdapter.ACTION_TRANSACTION_DETECTED); intent.addFlags(Intent.FLAG_INCLUDE_STOPPED_PACKAGES); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.putExtra(NfcAdapter.EXTRA_AID, aid); intent.putExtra(NfcAdapter.EXTRA_DATA, data); intent.putExtra(NfcAdapter.EXTRA_SECURE_ELEMENT_NAME, reader); String url = new String("nfc://secure:0/" + reader + "/" + aidString.toString()); intent.setData(Uri.parse(url)); final BroadcastOptions options = BroadcastOptions.makeBasic(); options.setBackgroundActivityStartsAllowed(true); Map hasIntentPackages = mContext .getPackageManager() .queryBroadcastReceiversAsUser(intent, 0, UserHandle.of(userId)) .stream() .collect(Collectors.toMap( activity -> activity.activityInfo.applicationInfo.packageName, activity -> activity.activityInfo.applicationInfo.uid, (packageName1, packageName2) -> { if (DBG) { Log.d(TAG, "queryBroadcastReceiversAsUser duplicate: " + packageName1 + ", " + packageName2); } return packageName1; })); if (DBG) { String[] packageNames = hasIntentPackages .keySet().toArray(new String[hasIntentPackages.size()]); Log.d(TAG, "queryBroadcastReceiversAsUser: " + Arrays.toString(packageNames)); } for (int i = 0; i < nfcAccess.length; i++) { if (nfcAccess[i]) { if (DBG) { Log.d(TAG, "sendOffHostTransactionEvent to " + packagesOfUser.get(i)); } if (uid == -1 && hasIntentPackages.containsKey(packagesOfUser.get(i))) { uid = hasIntentPackages.get(packagesOfUser.get(i)); } intent.setPackage(packagesOfUser.get(i)); mContext.sendBroadcastAsUser(intent, UserHandle.of(userId), null, options.toBundle()); } } } String aidCategory = mCardEmulationManager .getRegisteredAidCategory(aidString.toString()); if (DBG) Log.d(TAG, "aid cateogry: " + aidCategory); int offhostCategory; switch (aidCategory) { case CardEmulation.CATEGORY_PAYMENT: offhostCategory = NfcStatsLog .NFC_CARDEMULATION_OCCURRED__CATEGORY__OFFHOST_PAYMENT; break; case CardEmulation.CATEGORY_OTHER: offhostCategory = NfcStatsLog .NFC_CARDEMULATION_OCCURRED__CATEGORY__OFFHOST_OTHER; break; default: offhostCategory = NfcStatsLog .NFC_CARDEMULATION_OCCURRED__CATEGORY__OFFHOST; }; NfcStatsLog.write(NfcStatsLog.NFC_CARDEMULATION_OCCURRED, offhostCategory, reader, uid); } catch (RemoteException e) { Log.e(TAG, "Error in isNfcEventAllowed() " + e); } catch (UnsupportedEncodingException e) { Log.e(TAG, "Incorrect format for Secure Element name" + e); } } private void sendNfcPermissionProtectedBroadcast(Intent intent) { if (mNfcEventInstalledPackages.isEmpty()) { return; } intent.addFlags(Intent.FLAG_INCLUDE_STOPPED_PACKAGES); for (int userId : mNfcEventInstalledPackages.keySet()) { for (String packageName : mNfcEventInstalledPackages.get(userId)) { intent.setPackage(packageName); mContext.sendBroadcastAsUser(intent, UserHandle.of(userId)); } } } /* Returns the list of packages request for nfc preferred payment service changed and * have access to NFC Events on any SE */ private ArrayList getNfcPreferredPaymentChangedSEAccessAllowedPackages(int userId) { if (!isSEServiceAvailable() || mNfcPreferredPaymentChangedInstalledPackages.get(userId).isEmpty()) { return null; } String[] readers = null; try { readers = mSEService.getReaders(); } catch (RemoteException e) { Log.e(TAG, "Error in getReaders() " + e); return null; } if (readers == null || readers.length == 0) { return null; } boolean[] nfcAccessFinal = null; List packagesOfUser = mNfcPreferredPaymentChangedInstalledPackages.get(userId); String[] installedPackages = new String[packagesOfUser.size()]; for (String reader : readers) { try { boolean[] accessList = mSEService.isNfcEventAllowed(reader, null, packagesOfUser.toArray(installedPackages), userId ); if (accessList == null) { continue; } if (nfcAccessFinal == null) { nfcAccessFinal = accessList; } for (int i = 0; i < accessList.length; i++) { if (accessList[i]) { nfcAccessFinal[i] = true; } } } catch (RemoteException e) { Log.e(TAG, "Error in isNfcEventAllowed() " + e); } } if (nfcAccessFinal == null) { return null; } ArrayList packages = new ArrayList(); for (int i = 0; i < nfcAccessFinal.length; i++) { if (nfcAccessFinal[i]) { packages.add(packagesOfUser.get(i)); } } return packages; } private void sendPreferredPaymentChangedEvent(Intent intent) { intent.addFlags(Intent.FLAG_INCLUDE_STOPPED_PACKAGES); // Resume app switches so the receivers can start activities without delay mNfcDispatcher.resumeAppSwitches(); synchronized (this) { for (int userId : mNfcPreferredPaymentChangedInstalledPackages.keySet()) { ArrayList SEPackages = getNfcPreferredPaymentChangedSEAccessAllowedPackages(userId); UserHandle userHandle = UserHandle.of(userId); if (SEPackages != null && !SEPackages.isEmpty()) { for (String packageName : SEPackages) { intent.setPackage(packageName); intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND); mContext.sendBroadcastAsUser(intent, userHandle); } } PackageManager pm; try { pm = mContext.createContextAsUser(userHandle, /*flags=*/0) .getPackageManager(); } catch (IllegalStateException e) { Log.d(TAG, "Fail to get PackageManager for user: " + userHandle); continue; } for (String pkgName : mNfcPreferredPaymentChangedInstalledPackages.get(userId)) { try { PackageInfo info = pm.getPackageInfo(pkgName, 0); if (SEPackages != null && SEPackages.contains(pkgName)) { continue; } if (info.applicationInfo != null && ((info.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0 || (info.applicationInfo.privateFlags & ApplicationInfo.PRIVATE_FLAG_PRIVILEGED) != 0)) { intent.setPackage(pkgName); intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND); mContext.sendBroadcastAsUser(intent, userHandle); } } catch (Exception e) { Log.e(TAG, "Exception in getPackageInfo " + e); } } } } } private boolean llcpActivated(NfcDepEndpoint device) { Log.d(TAG, "LLCP Activation message"); if (device.getMode() == NfcDepEndpoint.MODE_P2P_TARGET) { if (DBG) Log.d(TAG, "NativeP2pDevice.MODE_P2P_TARGET"); if (device.connect()) { /* Check LLCP compliancy */ if (mDeviceHost.doCheckLlcp()) { /* Activate LLCP Link */ if (mDeviceHost.doActivateLlcp()) { if (DBG) Log.d(TAG, "Initiator Activate LLCP OK"); synchronized (NfcService.this) { // Register P2P device mObjectMap.put(device.getHandle(), device); } return true; } else { /* should not happen */ Log.w(TAG, "Initiator LLCP activation failed. Disconnect."); device.disconnect(); } } else { if (DBG) Log.d(TAG, "Remote Target does not support LLCP. Disconnect."); device.disconnect(); } } else { if (DBG) Log.d(TAG, "Cannot connect remote Target. Polling loop restarted."); /* * The polling loop should have been restarted in failing * doConnect */ } } else if (device.getMode() == NfcDepEndpoint.MODE_P2P_INITIATOR) { if (DBG) Log.d(TAG, "NativeP2pDevice.MODE_P2P_INITIATOR"); /* Check LLCP compliancy */ if (mDeviceHost.doCheckLlcp()) { /* Activate LLCP Link */ if (mDeviceHost.doActivateLlcp()) { if (DBG) Log.d(TAG, "Target Activate LLCP OK"); synchronized (NfcService.this) { // Register P2P device mObjectMap.put(device.getHandle(), device); } return true; } } else { Log.w(TAG, "checkLlcp failed"); } } return false; } private void dispatchTagEndpoint(TagEndpoint tagEndpoint, ReaderModeParams readerParams) { try { /* Avoid setting mCookieUpToDate to negative values */ mCookieUpToDate = mCookieGenerator.nextLong() >>> 1; Tag tag = new Tag(tagEndpoint.getUid(), tagEndpoint.getTechList(), tagEndpoint.getTechExtras(), tagEndpoint.getHandle(), mCookieUpToDate, mNfcTagService); registerTagObject(tagEndpoint); if (readerParams != null) { try { if ((readerParams.flags & NfcAdapter.FLAG_READER_NO_PLATFORM_SOUNDS) == 0) { mVibrator.vibrate(mVibrationEffect, HARDWARE_FEEDBACK_VIBRATION_ATTRIBUTES); playSound(SOUND_END); } if (readerParams.callback != null) { if (mScreenState == ScreenStateHelper.SCREEN_STATE_ON_UNLOCKED) { mPowerManager.userActivity(SystemClock.uptimeMillis(), PowerManager.USER_ACTIVITY_EVENT_OTHER, 0); } readerParams.callback.onTagDiscovered(tag); return; } else { // Follow normal dispatch below } } catch (RemoteException e) { Log.e(TAG, "Reader mode remote has died, falling back.", e); // Intentional fall-through } catch (Exception e) { // Catch any other exception Log.e(TAG, "App exception, not dispatching.", e); return; } } int dispatchResult = mNfcDispatcher.dispatchTag(tag); if (dispatchResult == NfcDispatcher.DISPATCH_FAIL && !mInProvisionMode) { if (DBG) Log.d(TAG, "Tag dispatch failed"); unregisterObject(tagEndpoint.getHandle()); if (mPollDelayTime > NO_POLL_DELAY) { tagEndpoint.stopPresenceChecking(); synchronized (NfcService.this) { if (!mPollDelayed) { int delayTime = mPollDelayTime; mPollDelayed = true; mDeviceHost.startStopPolling(false); if (mPollDelayCount < mPollDelayCountMax) { mPollDelayCount++; } else { delayTime = mPollDelayTimeLong; } if (DBG) Log.d(TAG, "Polling delayed " + delayTime); mHandler.sendMessageDelayed( mHandler.obtainMessage(MSG_DELAY_POLLING), delayTime); } else { if (DBG) Log.d(TAG, "Keep waiting for polling delay"); } } } else { Log.d(TAG, "Keep presence checking."); } if (mScreenState == ScreenStateHelper.SCREEN_STATE_ON_UNLOCKED && mNotifyDispatchFailed) { if (!sToast_debounce) { Toast.makeText(mContext, R.string.tag_dispatch_failed, Toast.LENGTH_SHORT).show(); sToast_debounce = true; mHandler.sendEmptyMessageDelayed(MSG_TOAST_DEBOUNCE_EVENT, sToast_debounce_time_ms); } playSound(SOUND_ERROR); } if (!mAntennaBlockedMessageShown && mDispatchFailedCount++ > mDispatchFailedMax) { new NfcBlockedNotification(mContext).startNotification(); synchronized (NfcService.this) { mPrefsEditor.putBoolean(PREF_ANTENNA_BLOCKED_MESSAGE_SHOWN, true); mPrefsEditor.apply(); } mBackupManager.dataChanged(); mAntennaBlockedMessageShown = true; mDispatchFailedCount = 0; if (DBG) Log.d(TAG, "Tag dispatch failed notification"); } } else if (dispatchResult == NfcDispatcher.DISPATCH_SUCCESS) { synchronized (NfcService.this) { mPollDelayCount = 0; } if (mScreenState == ScreenStateHelper.SCREEN_STATE_ON_UNLOCKED) { mPowerManager.userActivity(SystemClock.uptimeMillis(), PowerManager.USER_ACTIVITY_EVENT_OTHER, 0); } mDispatchFailedCount = 0; mVibrator.vibrate(mVibrationEffect, HARDWARE_FEEDBACK_VIBRATION_ATTRIBUTES); playSound(SOUND_END); } } catch (Exception e) { Log.e(TAG, "Tag creation exception, not dispatching.", e); return; } } } private NfcServiceHandler mHandler = new NfcServiceHandler(); class ApplyRoutingTask extends AsyncTask { @Override protected Void doInBackground(Integer... params) { synchronized (NfcService.this) { if (params == null || params.length != 1) { // force apply current routing applyRouting(true); return null; } mScreenState = params[0].intValue(); mRoutingWakeLock.acquire(); try { applyRouting(false); } finally { mRoutingWakeLock.release(); } return null; } } } private final BroadcastReceiver mReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (action.equals(Intent.ACTION_SCREEN_ON) || action.equals(Intent.ACTION_SCREEN_OFF) || action.equals(Intent.ACTION_USER_PRESENT)) { // Perform applyRouting() in AsyncTask to serialize blocking calls if (action.equals(Intent.ACTION_SCREEN_ON)) { synchronized (NfcService.this) { mPollDelayCount = 0; } } applyScreenState(mScreenStateHelper.checkScreenState()); } else if (action.equals(Intent.ACTION_USER_SWITCHED)) { int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0); mUserId = userId; updatePackageCache(); if (mIsHceCapable) { mCardEmulationManager.onUserSwitched(getUserId()); } applyScreenState(mScreenStateHelper.checkScreenState()); if (NFC_SNOOP_LOG_MODE.equals(NfcProperties.snoop_log_mode_values.FULL) || NFC_VENDOR_DEBUG_ENABLED) { new NfcDeveloperOptionNotification(mContext.createContextAsUser( UserHandle.of(ActivityManager.getCurrentUser()), /*flags=*/0)) .startNotification(); } } else if (action.equals(Intent.ACTION_USER_ADDED)) { int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0); setPaymentForegroundPreference(userId); if (NFC_SNOOP_LOG_MODE.equals(NfcProperties.snoop_log_mode_values.FULL) || NFC_VENDOR_DEBUG_ENABLED) { new NfcDeveloperOptionNotification(mContext.createContextAsUser( UserHandle.of(ActivityManager.getCurrentUser()), /*flags=*/0)) .startNotification(); } } } }; private final BroadcastReceiver mManagedProfileReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); UserHandle user = intent.getParcelableExtra(Intent.EXTRA_USER); // User should be filled for below intents, check the existence. if (user == null) { Log.d(TAG, intent.getAction() + " broadcast without EXTRA_USER."); return; } if (mCardEmulationManager == null) { return; } if (action.equals(Intent.ACTION_MANAGED_PROFILE_ADDED) || action.equals(Intent.ACTION_MANAGED_PROFILE_AVAILABLE) || action.equals(Intent.ACTION_MANAGED_PROFILE_REMOVED) || action.equals(Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE)) { mCardEmulationManager.onManagedProfileChanged(); setPaymentForegroundPreference(user.getIdentifier()); } } }; private final BroadcastReceiver mOwnerReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (action.equals(Intent.ACTION_PACKAGE_REMOVED) || action.equals(Intent.ACTION_PACKAGE_ADDED) || action.equals(Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE) || action.equals(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE)) { updatePackageCache(); if (action.equals(Intent.ACTION_PACKAGE_REMOVED) && renewTagAppPrefList()) storeTagAppPrefList(); } else if (action.equals(Intent.ACTION_SHUTDOWN)) { if (DBG) Log.d(TAG, "Shutdown received with UserId: " + getSendingUser().getIdentifier()); if (!getSendingUser().equals(UserHandle.ALL)) { return; } if (DBG) Log.d(TAG, "Device is shutting down."); if (mIsAlwaysOnSupported && mAlwaysOnState == NfcAdapter.STATE_ON) { new EnableDisableTask().execute(TASK_DISABLE_ALWAYS_ON); } if (isNfcEnabled()) { mDeviceHost.shutdown(); } } } }; private void applyScreenState(int screenState) { if (mScreenState != screenState) { if (nci_version != NCI_VERSION_2_0) { new ApplyRoutingTask().execute(Integer.valueOf(screenState)); } sendMessage(NfcService.MSG_APPLY_SCREEN_STATE, screenState); } } private void setPaymentForegroundPreference(int user) { Context uc = mContext.createContextAsUser(UserHandle.of(user), 0); try { // Check whether the Settings.Secure.NFC_PAYMENT_FOREGROUND exists or not. Settings.Secure.getInt(uc.getContentResolver(), Settings.Secure.NFC_PAYMENT_FOREGROUND); } catch (SettingNotFoundException e) { boolean foregroundPreference = mContext.getResources().getBoolean(R.bool.payment_foreground_preference); Settings.Secure.putInt(uc.getContentResolver(), Settings.Secure.NFC_PAYMENT_FOREGROUND, foregroundPreference ? 1 : 0); Log.d(TAG, "Set NFC_PAYMENT_FOREGROUND preference:" + foregroundPreference); } } /** * for debugging only - no i18n */ static String stateToString(int state) { switch (state) { case NfcAdapter.STATE_OFF: return "off"; case NfcAdapter.STATE_TURNING_ON: return "turning on"; case NfcAdapter.STATE_ON: return "on"; case NfcAdapter.STATE_TURNING_OFF: return "turning off"; default: return ""; } } static int stateToProtoEnum(int state) { switch (state) { case NfcAdapter.STATE_OFF: return NfcServiceDumpProto.STATE_OFF; case NfcAdapter.STATE_TURNING_ON: return NfcServiceDumpProto.STATE_TURNING_ON; case NfcAdapter.STATE_ON: return NfcServiceDumpProto.STATE_ON; case NfcAdapter.STATE_TURNING_OFF: return NfcServiceDumpProto.STATE_TURNING_OFF; default: return NfcServiceDumpProto.STATE_UNKNOWN; } } public String getNfaStorageDir() { return mDeviceHost.getNfaStorageDir(); } private void copyNativeCrashLogsIfAny(PrintWriter pw) { try { File file = new File(NATIVE_LOG_FILE_PATH, NATIVE_LOG_FILE_NAME); if (!file.exists()) { return; } pw.println("---BEGIN: NATIVE CRASH LOG----"); Scanner sc = new Scanner(file); while(sc.hasNextLine()) { String s = sc.nextLine(); pw.println(s); } pw.println("---END: NATIVE CRASH LOG----"); sc.close(); } catch (IOException e) { Log.e(TAG, "Exception in copyNativeCrashLogsIfAny " + e); } } private void storeNativeCrashLogs() { FileOutputStream fos = null; try { File file = new File(NATIVE_LOG_FILE_PATH, NATIVE_LOG_FILE_NAME); if (file.length() >= NATIVE_CRASH_FILE_SIZE) { file.createNewFile(); } fos = new FileOutputStream(file, true); mDeviceHost.dump(fos.getFD()); fos.flush(); } catch (IOException e) { Log.e(TAG, "Exception in storeNativeCrashLogs " + e); } finally { if (fos != null) { try { fos.close(); } catch (IOException e) { Log.e(TAG, "Exception in storeNativeCrashLogs: file close " + e); } } } } private void dumpTagAppPreference(PrintWriter pw) { pw.println("mIsTagAppPrefSupported =" + mIsTagAppPrefSupported); if (mIsTagAppPrefSupported) { pw.println("TagAppPreference:"); UserManager um = mContext.createContextAsUser( UserHandle.of(ActivityManager.getCurrentUser()), 0) .getSystemService(UserManager.class); List luh = um.getEnabledProfiles(); for (UserHandle uh : luh) { int userId = uh.getIdentifier(); HashMap map; synchronized (NfcService.this) { map = mTagAppPrefList.getOrDefault(userId, new HashMap<>()); } if (map.size() > 0) pw.println("userId=" + userId); for (Map.Entry entry : map.entrySet()) { pw.println("pkg: " + entry.getKey() + " : " + entry.getValue()); } } } } void dump(FileDescriptor fd, PrintWriter pw, String[] args) { if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) != PackageManager.PERMISSION_GRANTED) { pw.println("Permission Denial: can't dump nfc from from pid=" + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid() + " without permission " + android.Manifest.permission.DUMP); return; } for (String arg : args) { if ("--proto".equals(arg)) { FileOutputStream fos = null; try { fos = new FileOutputStream(fd); ProtoOutputStream proto = new ProtoOutputStream(fos); synchronized (this) { dumpDebug(proto); } proto.flush(); } catch (Exception e) { Log.e(TAG, "Exception in dump nfc --proto " + e); } finally { if (fos != null) { try { fos.close(); } catch (IOException e) { Log.e(TAG, "Exception in storeNativeCrashLogs " + e); } } } return; } } synchronized (this) { pw.println("mState=" + stateToString(mState)); pw.println("mAlwaysOnState=" + stateToString(mAlwaysOnState)); pw.println("mScreenState=" + ScreenStateHelper.screenStateToString(mScreenState)); pw.println("mIsSecureNfcEnabled=" + mIsSecureNfcEnabled); pw.println("mIsAlwaysOnSupported=" + mIsAlwaysOnSupported); pw.println("SnoopLogMode=" + NFC_SNOOP_LOG_MODE); pw.println("VendorDebugEnabled=" + NFC_VENDOR_DEBUG_ENABLED); pw.println(mCurrentDiscoveryParameters); if (mIsHceCapable) { mCardEmulationManager.dump(fd, pw, args); } mNfcDispatcher.dump(fd, pw, args); if (mState == NfcAdapter.STATE_ON) { mRoutingTableParser.dump(mDeviceHost, pw); } dumpTagAppPreference(pw); copyNativeCrashLogsIfAny(pw); pw.flush(); mDeviceHost.dump(fd); } } /** * Dump debugging information as a NfcServiceDumpProto * * Note: * See proto definition in frameworks/base/core/proto/android/nfc/nfc_service.proto * When writing a nested message, must call {@link ProtoOutputStream#start(long)} before and * {@link ProtoOutputStream#end(long)} after. * Never reuse a proto field number. When removing a field, mark it as reserved. */ private void dumpDebug(ProtoOutputStream proto) { proto.write(NfcServiceDumpProto.STATE, stateToProtoEnum(mState)); proto.write(NfcServiceDumpProto.IN_PROVISION_MODE, mInProvisionMode); proto.write(NfcServiceDumpProto.SCREEN_STATE, ScreenStateHelper.screenStateToProtoEnum(mScreenState)); proto.write(NfcServiceDumpProto.SECURE_NFC_ENABLED, mIsSecureNfcEnabled); proto.write(NfcServiceDumpProto.POLLING_PAUSED, mPollingPaused); proto.write(NfcServiceDumpProto.HCE_CAPABLE, mIsHceCapable); proto.write(NfcServiceDumpProto.HCE_F_CAPABLE, mIsHceFCapable); proto.write(NfcServiceDumpProto.SECURE_NFC_CAPABLE, mIsSecureNfcCapable); proto.write(NfcServiceDumpProto.VR_MODE_ENABLED, (mVrManager != null) ? mVrManager.isVrModeEnabled() : false); long token = proto.start(NfcServiceDumpProto.DISCOVERY_PARAMS); mCurrentDiscoveryParameters.dumpDebug(proto); proto.end(token); if (mIsHceCapable) { token = proto.start(NfcServiceDumpProto.CARD_EMULATION_MANAGER); mCardEmulationManager.dumpDebug(proto); proto.end(token); } token = proto.start(NfcServiceDumpProto.NFC_DISPATCHER); mNfcDispatcher.dumpDebug(proto); proto.end(token); // Dump native crash logs if any File file = new File(NATIVE_LOG_FILE_PATH, NATIVE_LOG_FILE_NAME); if (!file.exists()) { return; } try { String logs = Files.lines(file.toPath()).collect(Collectors.joining("\n")); proto.write(NfcServiceDumpProto.NATIVE_CRASH_LOGS, logs); } catch (IOException e) { Log.e(TAG, "IOException in dumpDebug(ProtoOutputStream): " + e); } } }