diff options
Diffstat (limited to 'src/com')
| -rwxr-xr-x | src/com/android/nfc/NfcService.java | 235 |
1 files changed, 143 insertions, 92 deletions
diff --git a/src/com/android/nfc/NfcService.java b/src/com/android/nfc/NfcService.java index cb79d09..d003096 100755 --- a/src/com/android/nfc/NfcService.java +++ b/src/com/android/nfc/NfcService.java @@ -101,6 +101,8 @@ public class NfcService extends Application implements DeviceHostListener { static final String PREF_FIRST_BEAM = "first_beam"; static final String PREF_FIRST_BOOT = "first_boot"; + static final boolean PN544_QUIRK_DISCONNECT_BEFORE_RECONFIGURE = true; + static final int MSG_NDEF_TAG = 0; static final int MSG_CARD_EMULATION = 1; static final int MSG_LLCP_LINK_ACTIVATION = 2; @@ -118,11 +120,20 @@ public class NfcService extends Application implements DeviceHostListener { static final int TASK_BOOT = 3; static final int TASK_EE_WIPE = 4; + // Screen state, used by mScreenState + static final int SCREEN_STATE_UNKNOWN = 0; + static final int SCREEN_STATE_OFF = 1; + static final int SCREEN_STATE_ON_LOCKED = 2; + static final int SCREEN_STATE_ON_UNLOCKED = 3; + // Copied from com.android.nfc_extras to avoid library dependency // Must keep in sync with com.android.nfc_extras static final int ROUTE_OFF = 1; static final int ROUTE_ON_WHEN_SCREEN_ON = 2; + /** minimum screen state that enables NFC polling (discovery) */ + static final int POLLING_MODE = SCREEN_STATE_ON_UNLOCKED; + // for use with playSound() public static final int SOUND_START = 0; public static final int SOUND_END = 1; @@ -172,10 +183,12 @@ public class NfcService extends Application implements DeviceHostListener { boolean mP2pStarted = false; // fields below are used in multiple threads and protected by synchronized(this) - private final HashMap<Integer, Object> mObjectMap = new HashMap<Integer, Object>(); - private HashSet<String> mSePackages = new HashSet<String>(); - private boolean mIsScreenUnlocked; - private boolean mIsNdefPushEnabled; + final HashMap<Integer, Object> mObjectMap = new HashMap<Integer, Object>(); + HashSet<String> mSePackages = new HashSet<String>(); + int mScreenState; + boolean mIsNdefPushEnabled; + boolean mNfceeRouteEnabled; // current Device Host state of NFC-EE routing + boolean mNfcPollingEnabled; // current Device Host state of NFC-C polling // mState is protected by this, however it is only modified in onCreate() // and the default AsyncTask thread so it is read unprotected from that @@ -201,6 +214,7 @@ public class NfcService extends Application implements DeviceHostListener { NfceeAccessControl mNfceeAccessControl; private NfcDispatcher mNfcDispatcher; + private PowerManager mPowerManager; private KeyguardManager mKeyguard; private static NfcService sService; @@ -315,11 +329,11 @@ public class NfcService extends Application implements DeviceHostListener { mState = NfcAdapter.STATE_OFF; mIsNdefPushEnabled = mPrefs.getBoolean(PREF_NDEF_PUSH_ON, NDEF_PUSH_ON_DEFAULT); - PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE); + mPowerManager = (PowerManager) getSystemService(Context.POWER_SERVICE); - mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "NfcService"); + mWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "NfcService"); mKeyguard = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE); - mIsScreenUnlocked = pm.isScreenOn() && !mKeyguard.isKeyguardLocked(); + mScreenState = checkScreenState(); ServiceManager.addService(SERVICE_NAME, mNfcAdapter); @@ -377,6 +391,16 @@ public class NfcService extends Application implements DeviceHostListener { } } + int checkScreenState() { + if (!mPowerManager.isScreenOn()) { + return SCREEN_STATE_OFF; + } else if (mKeyguard.isKeyguardLocked()) { + return SCREEN_STATE_ON_LOCKED; + } else { + return SCREEN_STATE_ON_UNLOCKED; + } + } + /** * Manages tasks that involve turning on/off the NFC controller. * @@ -488,7 +512,7 @@ public class NfcService extends Application implements DeviceHostListener { initSoundPool(); /* Start polling loop */ - applyRouting(); + applyRouting(true); return true; } @@ -516,7 +540,7 @@ public class NfcService extends Application implements DeviceHostListener { // 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. - applyRouting(); + applyRouting(true); maybeDisconnectTarget(); mNfcDispatcher.setForegroundDispatch(null, null, null); @@ -772,7 +796,7 @@ public class NfcService extends Application implements DeviceHostListener { return ErrorCodes.SUCCESS; } /* Restart polling loop for notification */ - applyRouting(); + applyRouting(true); return ErrorCodes.ERROR_DISCONNECT; } @@ -1141,7 +1165,7 @@ public class NfcService extends Application implements DeviceHostListener { mSecureElement.doDisconnect(mOpenEe.handle); mOpenEe = null; - applyRouting(); + applyRouting(true); } } @@ -1264,7 +1288,7 @@ public class NfcService extends Application implements DeviceHostListener { public void setCardEmulationRoute(String pkg, int route) throws RemoteException { NfcService.this.enforceNfceeAdminPerm(pkg); mEeRoutingState = route; - applyRouting(); + applyRouting(true); } @Override @@ -1323,27 +1347,71 @@ public class NfcService extends Application implements DeviceHostListener { } } - /** apply NFC discovery and EE routing */ - void applyRouting() { + /** + * Read mScreenState and apply NFC-C polling and NFC-EE routing + */ + void applyRouting(boolean force) { synchronized (this) { if (!isNfcEnabled() || mOpenEe != null) { + // PN544 cannot be reconfigured while EE is open return; } - if (mIsScreenUnlocked) { + + if (PN544_QUIRK_DISCONNECT_BEFORE_RECONFIGURE && mScreenState == SCREEN_STATE_OFF) { + /* TODO undo this after the LLCP stack is fixed. + * Use a different sequence when turning the screen off to + * workaround race conditions in pn544 libnfc. The race occurs + * when we change routing while there is a P2P target connect. + * The async LLCP callback will crash since the routing code + * is overwriting globals it relies on. + */ + if (POLLING_MODE > SCREEN_STATE_OFF) { + if (force || mNfcPollingEnabled) { + Log.d(TAG, "NFC-C OFF, disconnect"); + mNfcPollingEnabled = false; + mDeviceHost.disableDiscovery(); + maybeDisconnectTarget(); + } + } if (mEeRoutingState == ROUTE_ON_WHEN_SCREEN_ON) { - Log.d(TAG, "NFC-EE routing ON"); + if (force || mNfceeRouteEnabled) { + Log.d(TAG, "NFC-EE OFF"); + mNfceeRouteEnabled = false; + mDeviceHost.doDeselectSecureElement(); + } + } + return; + } + + // configure NFC-EE routing + if (mScreenState >= SCREEN_STATE_ON_LOCKED && + mEeRoutingState == ROUTE_ON_WHEN_SCREEN_ON) { + if (force || !mNfceeRouteEnabled) { + Log.d(TAG, "NFC-EE ON"); + mNfceeRouteEnabled = true; mDeviceHost.doSelectSecureElement(); - } else { - Log.d(TAG, "NFC-EE routing OFF"); + } + } else { + if (force || mNfceeRouteEnabled) { + Log.d(TAG, "NFC-EE OFF"); + mNfceeRouteEnabled = false; mDeviceHost.doDeselectSecureElement(); } - Log.d(TAG, "NFC-C polling ON"); - mDeviceHost.enableDiscovery(); + } + + // configure NFC-C polling + if (mScreenState >= POLLING_MODE) { + if (force || !mNfcPollingEnabled) { + Log.d(TAG, "NFC-C ON"); + mNfcPollingEnabled = true; + mDeviceHost.enableDiscovery(); + } } else { - Log.d(TAG, "NFC-EE routing OFF"); - mDeviceHost.doDeselectSecureElement(); - Log.d(TAG, "NFC-C polling OFF"); - mDeviceHost.disableDiscovery(); + if (force || mNfcPollingEnabled) { + Log.d(TAG, "NFC-C OFF"); + mNfcPollingEnabled = false; + mDeviceHost.disableDiscovery(); + } } } } @@ -1611,7 +1679,6 @@ public class NfcService extends Application implements DeviceHostListener { /* Activate LLCP Link */ if (mDeviceHost.doActivateLlcp()) { if (DBG) Log.d(TAG, "Initiator Activate LLCP OK"); - boolean isZeroClickOn; synchronized (NfcService.this) { // Register P2P device mObjectMap.put(device.getHandle(), device); @@ -1641,7 +1708,6 @@ public class NfcService extends Application implements DeviceHostListener { /* Activate LLCP Link */ if (mDeviceHost.doActivateLlcp()) { if (DBG) Log.d(TAG, "Target Activate LLCP OK"); - boolean isZeroClickOn; synchronized (NfcService.this) { // Register P2P device mObjectMap.put(device.getHandle(), device); @@ -1672,49 +1738,27 @@ public class NfcService extends Application implements DeviceHostListener { private NfcServiceHandler mHandler = new NfcServiceHandler(); - class EnableDisableDiscoveryTask extends AsyncTask<Boolean, Void, Void> { + class ApplyRoutingTask extends AsyncTask<Integer, Void, Void> { @Override - protected Void doInBackground(Boolean... params) { - if (DBG) Log.d(TAG, "EnableDisableDiscoveryTask: enable = " + params[0]); - - if (params != null && params.length > 0 && params[0]) { - synchronized (NfcService.this) { - if (!mIsScreenUnlocked) { - mIsScreenUnlocked = true; - applyRouting(); - } else { - if (DBG) Log.d(TAG, "Ignoring enable request"); - } + protected Void doInBackground(Integer... params) { + synchronized (NfcService.this) { + if (params == null || params.length != 1) { + // force apply current routing + applyRouting(true); + return null; } - } else { - mWakeLock.acquire(); - synchronized (NfcService.this) { - if (mIsScreenUnlocked) { - mIsScreenUnlocked = false; -// applyRouting(); - /* - * TODO undo this after the LLCP stack is fixed. - * This is done locally here since the LLCP stack is still using - * globals without holding any locks, and if we attempt to change - * the NFCEE routing while the target is still connected (and it's - * a P2P target) the async LLCP callbacks will crash since the routing - * manipulation code is overwriting globals it relies on. This hack should - * be removed when the LLCP stack is fixed. - */ - if (isNfcEnabled() && mOpenEe == null) { - Log.d(TAG, "NFC-C polling OFF"); - mDeviceHost.disableDiscovery(); - maybeDisconnectTarget(); - Log.d(TAG, "NFC-EE routing OFF"); - mDeviceHost.doDeselectSecureElement(); - } - } else { - if (DBG) Log.d(TAG, "Ignoring disable request"); - } + mScreenState = params[0].intValue(); + + boolean needWakelock = mScreenState == SCREEN_STATE_OFF; + if (needWakelock) { + mWakeLock.acquire(); + } + applyRouting(false); + if (needWakelock) { + mWakeLock.release(); } - mWakeLock.release(); + return null; } - return null; } } @@ -1724,31 +1768,22 @@ public class NfcService extends Application implements DeviceHostListener { String action = intent.getAction(); if (action.equals( NativeNfcManager.INTERNAL_TARGET_DESELECTED_ACTION)) { - if (DBG) Log.d(TAG, "INERNAL_TARGET_DESELECTED_ACTION"); - - /* Restart polling loop for notification */ - applyRouting(); - - } else if (action.equals(Intent.ACTION_SCREEN_ON)) { - // Only enable if the screen is unlocked. If the screen is locked - // Intent.ACTION_USER_PRESENT will be broadcast when the screen is - // unlocked. - boolean enable = !mKeyguard.isKeyguardLocked(); - - // Perform discovery enable in thread to protect against ANR when the - // NFC stack wedges. This is *not* the correct way to fix this issue - - // configuration of the local NFC adapter should be very quick and should - // be safe on the main thread, and the NFC stack should not wedge. - new EnableDisableDiscoveryTask().execute(enable); - } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { - // Perform discovery disable in thread to protect against ANR when the - // NFC stack wedges. This is *not* the correct way to fix this issue - - // configuration of the local NFC adapter should be very quick and should - // be safe on the main thread, and the NFC stack should not wedge. - new EnableDisableDiscoveryTask().execute(Boolean.FALSE); - } else if (action.equals(Intent.ACTION_USER_PRESENT)) { - // The user has unlocked the screen. Enabled! - new EnableDisableDiscoveryTask().execute(Boolean.TRUE); + // Perform applyRouting() in AsyncTask to serialize blocking calls + new ApplyRoutingTask().execute(); + } else 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 + int screenState = SCREEN_STATE_OFF; + if (action.equals(Intent.ACTION_SCREEN_OFF)) { + screenState = SCREEN_STATE_OFF; + } else if (action.equals(Intent.ACTION_SCREEN_ON)) { + screenState = mKeyguard.isKeyguardLocked() ? + SCREEN_STATE_ON_LOCKED : SCREEN_STATE_ON_UNLOCKED; + } else if (action.equals(Intent.ACTION_USER_PRESENT)) { + screenState = SCREEN_STATE_ON_UNLOCKED; + } + new ApplyRoutingTask().execute(Integer.valueOf(screenState)); } else if (action.equals(ACTION_MASTER_CLEAR_NOTIFICATION)) { EnableDisableTask eeWipeTask = new EnableDisableTask(); eeWipeTask.execute(TASK_EE_WIPE); @@ -1801,7 +1836,7 @@ public class NfcService extends Application implements DeviceHostListener { Settings.System.AIRPLANE_MODE_ON, 0) == 1; } - /** for debugging only - no il8n */ + /** for debugging only - no i18n */ static String stateToString(int state) { switch (state) { case NfcAdapter.STATE_OFF: @@ -1817,6 +1852,20 @@ public class NfcService extends Application implements DeviceHostListener { } } + /** For debugging only - no i18n */ + static String screenStateToString(int screenState) { + switch (screenState) { + case SCREEN_STATE_OFF: + return "OFF"; + case SCREEN_STATE_ON_LOCKED: + return "ON_LOCKED"; + case SCREEN_STATE_ON_UNLOCKED: + return "ON_UNLOCKED"; + default: + return "UNKNOWN"; + } + } + void dump(FileDescriptor fd, PrintWriter pw, String[] args) { if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) != PackageManager.PERMISSION_GRANTED) { @@ -1829,7 +1878,9 @@ public class NfcService extends Application implements DeviceHostListener { synchronized (this) { pw.println("mState=" + stateToString(mState)); pw.println("mIsZeroClickRequested=" + mIsNdefPushEnabled); - pw.println("mIsScreenUnlocked=" + mIsScreenUnlocked); + pw.println("mScreenState=" + screenStateToString(mScreenState)); + pw.println("mNfcPollingEnabled=" + mNfcPollingEnabled); + pw.println("mNfceeRouteEnabled=" + mNfceeRouteEnabled); pw.println("mIsAirplaneSensitive=" + mIsAirplaneSensitive); pw.println("mIsAirplaneToggleable=" + mIsAirplaneToggleable); mP2pLinkManager.dump(fd, pw, args); |