Reformat and optimize codes in FastPairSimulator.
Test: atest -v CtsSeekerDiscoverProviderTest
BUG: 216079944
Change-Id: I3b498b50c552015352c9c7748a53b4a7f5d616b1
diff --git a/nearby/tests/multidevices/clients/src/com/android/server/nearby/common/bluetooth/fastpair/testing/FastPairSimulator.java b/nearby/tests/multidevices/clients/src/com/android/server/nearby/common/bluetooth/fastpair/testing/FastPairSimulator.java
index acc13e3..cf8be76 100644
--- a/nearby/tests/multidevices/clients/src/com/android/server/nearby/common/bluetooth/fastpair/testing/FastPairSimulator.java
+++ b/nearby/tests/multidevices/clients/src/com/android/server/nearby/common/bluetooth/fastpair/testing/FastPairSimulator.java
@@ -29,14 +29,15 @@
import static android.bluetooth.BluetoothGattCharacteristic.PROPERTY_NOTIFY;
import static android.bluetooth.BluetoothGattCharacteristic.PROPERTY_READ;
import static android.bluetooth.BluetoothGattCharacteristic.PROPERTY_WRITE;
-import static com.android.server.nearby.common.bluetooth.fastpair.testing.RfcommServer.State.CONNECTED;
import static com.android.server.nearby.common.bluetooth.fastpair.AesEcbSingleBlockEncryption.AES_BLOCK_LENGTH;
import static com.android.server.nearby.common.bluetooth.fastpair.AesEcbSingleBlockEncryption.encrypt;
import static com.android.server.nearby.common.bluetooth.fastpair.Bytes.toBytes;
import static com.android.server.nearby.common.bluetooth.fastpair.Constants.A2DP_SINK_SERVICE_UUID;
import static com.android.server.nearby.common.bluetooth.fastpair.Constants.TransportDiscoveryService.BLUETOOTH_SIG_ORGANIZATION_ID;
+import static com.android.server.nearby.common.bluetooth.fastpair.EllipticCurveDiffieHellmanExchange.PUBLIC_KEY_LENGTH;
import static com.android.server.nearby.common.bluetooth.fastpair.MessageStreamHmacEncoder.SECTION_NONCE_LENGTH;
+import static com.android.server.nearby.common.bluetooth.fastpair.testing.RfcommServer.State.CONNECTED;
import static com.android.server.nearby.common.bluetooth.testability.android.bluetooth.BluetoothManager.wrap;
import static com.google.common.io.BaseEncoding.base16;
@@ -55,7 +56,12 @@
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
-import android.nearby.multidevices.fastpair.EventStreamProtocol;
+import android.nearby.multidevices.fastpair.EventStreamProtocol.AcknowledgementEventCode;
+import android.nearby.multidevices.fastpair.EventStreamProtocol.DeviceActionEventCode;
+import android.nearby.multidevices.fastpair.EventStreamProtocol.DeviceCapabilitySyncEventCode;
+import android.nearby.multidevices.fastpair.EventStreamProtocol.DeviceConfigurationEventCode;
+import android.nearby.multidevices.fastpair.EventStreamProtocol.DeviceEventCode;
+import android.nearby.multidevices.fastpair.EventStreamProtocol.EventGroup;
import android.os.Build.VERSION;
import android.os.Build.VERSION_CODES;
import android.os.Handler;
@@ -68,6 +74,8 @@
import androidx.annotation.VisibleForTesting;
import androidx.core.util.Consumer;
+import com.android.server.nearby.common.bloomfilter.BloomFilter;
+import com.android.server.nearby.common.bloomfilter.FastPairBloomFilterHasher;
import com.android.server.nearby.common.bluetooth.BluetoothException;
import com.android.server.nearby.common.bluetooth.BluetoothGattException;
import com.android.server.nearby.common.bluetooth.fastpair.AesEcbSingleBlockEncryption;
@@ -83,6 +91,8 @@
import com.android.server.nearby.common.bluetooth.fastpair.Constants.FastPairService.NameCharacteristic;
import com.android.server.nearby.common.bluetooth.fastpair.Constants.FastPairService.PasskeyCharacteristic;
import com.android.server.nearby.common.bluetooth.fastpair.Constants.TransportDiscoveryService;
+import com.android.server.nearby.common.bluetooth.fastpair.Constants.TransportDiscoveryService.BrHandoverDataCharacteristic;
+import com.android.server.nearby.common.bluetooth.fastpair.Constants.TransportDiscoveryService.ControlPointCharacteristic;
import com.android.server.nearby.common.bluetooth.fastpair.EllipticCurveDiffieHellmanExchange;
import com.android.server.nearby.common.bluetooth.fastpair.Ltv;
import com.android.server.nearby.common.bluetooth.fastpair.MessageStreamHmacEncoder;
@@ -98,13 +108,8 @@
import com.google.common.base.Ascii;
import com.google.common.primitives.Bytes;
-
-import com.android.server.nearby.common.bloomfilter.BloomFilter;
-import com.android.server.nearby.common.bloomfilter.FastPairBloomFilterHasher;
-
import com.google.protobuf.ByteString;
-import java.io.UnsupportedEncodingException;
import java.lang.reflect.Method;
import java.nio.ByteOrder;
import java.nio.charset.StandardCharsets;
@@ -250,12 +255,14 @@
return;
}
if (isDestroyed) {
- // Sometimes this receiver does not successfully unregister in destroy() which causes
- // events to occur after the simulator is stopped, so ignore those events.
+ // Sometimes this receiver does not successfully unregister in destroy()
+ // which causes events to occur after the simulator is stopped, so ignore
+ // those events.
logger.log("Intent received after simulator destroyed, ignoring");
return;
}
- BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
+ BluetoothDevice device = intent.getParcelableExtra(
+ BluetoothDevice.EXTRA_DEVICE);
switch (intent.getAction()) {
case BluetoothAdapter.ACTION_SCAN_MODE_CHANGED:
if (isDiscoverable()) {
@@ -263,28 +270,34 @@
}
break;
case BluetoothDevice.ACTION_PAIRING_REQUEST:
- int variant = intent.getIntExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT, ERROR);
+ int variant = intent.getIntExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT,
+ ERROR);
int key = intent.getIntExtra(BluetoothDevice.EXTRA_PAIRING_KEY, ERROR);
logger.log(
- "Pairing request, variant=%d, key=%s", variant, key == ERROR ? "(none)" : key);
+ "Pairing request, variant=%d, key=%s", variant,
+ key == ERROR ? "(none)" : key);
// Prevent Bluetooth Settings from getting the pairing request.
abortBroadcast();
pairingDevice = device;
if (secret == null) {
- // We haven't done the handshake over GATT to agree on the shared secret. For now,
- // just accept anyway (so we can still simulate old 1.0 model IDs).
+ // We haven't done the handshake over GATT to agree on the shared
+ // secret. For now, just accept anyway (so we can still simulate
+ // old 1.0 model IDs).
logger.log("No handshake, auto-accepting anyway.");
setPasskeyConfirmation(true);
- } else if (variant == BluetoothDevice.PAIRING_VARIANT_PASSKEY_CONFIRMATION) {
- // Store the passkey. And check it, since there's a race (see method for why).
- // Usually this check is a no-op and we'll get the passkey later over GATT.
+ } else if (variant
+ == BluetoothDevice.PAIRING_VARIANT_PASSKEY_CONFIRMATION) {
+ // Store the passkey. And check it, since there's a race (see
+ // method for why). Usually this check is a no-op and we'll get
+ // the passkey later over GATT.
localPasskey = key;
checkPasskey();
} else if (variant == PAIRING_VARIANT_DISPLAY_PASSKEY) {
if (passkeyEventCallback != null) {
- passkeyEventCallback.onPasskeyRequested(FastPairSimulator.this::enterPassKey);
+ passkeyEventCallback.onPasskeyRequested(
+ FastPairSimulator.this::enterPassKey);
} else {
logger.log("passkeyEventCallback is not set!");
enterPassKey(key);
@@ -295,20 +308,22 @@
} else if (variant == BluetoothDevice.PAIRING_VARIANT_PIN) {
if (passkeyEventCallback != null) {
passkeyEventCallback.onPasskeyRequested(
- (int pin) ->
- pairingDevice.setPin(
- convertPinToBytes(
- String.format(Locale.ENGLISH, "%d", pin))));
+ (int pin) -> {
+ byte[] newPin = convertPinToBytes(
+ String.format(Locale.ENGLISH, "%d", pin));
+ pairingDevice.setPin(newPin);
+ });
}
} else {
- // Reject the pairing request if it's not using the Numeric Comparison (aka Passkey
- // Confirmation) method.
+ // Reject the pairing request if it's not using the Numeric
+ // Comparison (aka Passkey Confirmation) method.
setPasskeyConfirmation(false);
}
break;
case BluetoothDevice.ACTION_BOND_STATE_CHANGED:
int bondState =
- intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE, BluetoothDevice.BOND_NONE);
+ intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE,
+ BluetoothDevice.BOND_NONE);
logger.log("Bond state to %s changed to %d", device, bondState);
switch (bondState) {
case BluetoothDevice.BOND_BONDING:
@@ -323,7 +338,9 @@
setScanMode(BluetoothAdapter.SCAN_MODE_CONNECTABLE);
// If it is subsequent pair, we need to add paired device here.
- if (isSubsequentPair && secret != null && secret.length == AES_BLOCK_LENGTH) {
+ if (isSubsequentPair
+ && secret != null
+ && secret.length == AES_BLOCK_LENGTH) {
addAccountKey(secret, pairingDevice);
}
break;
@@ -357,8 +374,8 @@
}
break;
default:
- logger.log(
- new IllegalArgumentException(intent.toString()), "Received unexpected intent");
+ logger.log(new IllegalArgumentException(intent.toString()),
+ "Received unexpected intent");
break;
}
}
@@ -370,12 +387,7 @@
return null;
}
byte[] pinBytes;
- try {
- pinBytes = pin.getBytes("UTF-8");
- } catch (UnsupportedEncodingException uee) {
- logger.log("UTF-8 not supported?!?");
- return null;
- }
+ pinBytes = pin.getBytes(StandardCharsets.UTF_8);
if (pinBytes.length <= 0 || pinBytes.length > 16) {
return null;
}
@@ -395,7 +407,8 @@
}
@Override
- public void write(BluetoothGattServerConnection connection, int offset, byte[] value) {
+ public void write(
+ BluetoothGattServerConnection connection, int offset, byte[] value) {
logger.log("Got value from passkey servlet: %s", base16().encode(value));
if (secret == null) {
logger.log("Ignoring write to passkey characteristic, no pairing secret.");
@@ -403,8 +416,8 @@
}
try {
- remotePasskey =
- PasskeyCharacteristic.decrypt(PasskeyCharacteristic.Type.SEEKER, secret, value);
+ remotePasskey = PasskeyCharacteristic.decrypt(
+ PasskeyCharacteristic.Type.SEEKER, secret, value);
if (passkeyEventCallback != null) {
passkeyEventCallback.onRemotePasskeyReceived(remotePasskey);
}
@@ -430,17 +443,18 @@
}
@Override
- public void write(BluetoothGattServerConnection connection, int offset, byte[] value) {
+ public void write(
+ BluetoothGattServerConnection connection, int offset, byte[] value) {
logger.log("Got value from device naming servlet: %s", base16().encode(value));
if (secret == null) {
logger.log("Ignoring write to name characteristic, no pairing secret.");
return;
}
- // Parse the device name from seeker to write name into provider. See
- // go/fast-pair-naming-design-doc for the decryption detail to get the device name.
+ // Parse the device name from seeker to write name into provider.
logger.log("Got name byte array size = %d", value.length);
try {
- String decryptedDeviceName = NamingEncoder.decodeNamingPacket(secret, value);
+ String decryptedDeviceName =
+ NamingEncoder.decodeNamingPacket(secret, value);
if (decryptedDeviceName != null) {
setDeviceName(decryptedDeviceName.getBytes(StandardCharsets.UTF_8));
logger.log("write device name = %s", decryptedDeviceName);
@@ -458,7 +472,8 @@
private Value bluetoothAddress;
private final FastPairAdvertiser advertiser;
- private final Map<String, BluetoothGattServerHelper> bluetoothGattServerHelpers = new HashMap<>();
+ private final Map<String, BluetoothGattServerHelper> mBluetoothGattServerHelpers =
+ new HashMap<>();
private CountDownLatch isDiscoverableLatch = new CountDownLatch(1);
private ScheduledFuture<?> revertDiscoverableFuture;
private boolean shouldFailPairing = false;
@@ -532,9 +547,9 @@
}
/** Send Event Message on to rfcomm connected devices. */
- public void sendEventStreamMessageToRfcommDevices(EventStreamProtocol.EventGroup eventGroup) {
+ public void sendEventStreamMessageToRfcommDevices(EventGroup eventGroup) {
// Send fake log when event code is logging and type is not using Log_Full event.
- if (eventGroup == EventStreamProtocol.EventGroup.LOGGING && !useLogFullEvent) {
+ if (eventGroup == EventGroup.LOGGING && !useLogFullEvent) {
rfcommServer.sendFakeEventStreamLoggingMessage(
getDeviceName()
+ " "
@@ -568,8 +583,8 @@
}
/**
- * Callback when there comes a passkey input request from BT service, or receiving remote device's
- * passkey.
+ * Callback when there comes a passkey input request from BT service, or receiving remote
+ * device's passkey.
*/
public interface PasskeyEventCallback {
void onPasskeyRequested(KeyInputCallback keyInputCallback);
@@ -816,7 +831,8 @@
this.mCallback = option.mCallback;
this.mIncludeTransportDataDescriptor = option.mIncludeTransportDataDescriptor;
this.mAntiSpoofingPrivateKey = option.mAntiSpoofingPrivateKey;
- this.mUseRandomSaltForAccountKeyRotation = option.mUseRandomSaltForAccountKeyRotation;
+ this.mUseRandomSaltForAccountKeyRotation =
+ option.mUseRandomSaltForAccountKeyRotation;
this.mIsMemoryTest = option.mIsMemoryTest;
this.mBecomeDiscoverable = option.mBecomeDiscoverable;
this.mShowsPasskeyConfirmation = option.mShowsPasskeyConfirmation;
@@ -834,7 +850,10 @@
return this;
}
- /** Must be a 6-byte hex string (optionally with colons). Default is this device's BT MAC. */
+ /**
+ * Must be a 6-byte hex string (optionally with colons).
+ * Default is this device's BT MAC.
+ */
public Builder setBluetoothAddress(@Nullable String bluetoothAddress) {
this.mBluetoothAddress = bluetoothAddress;
return this;
@@ -864,10 +883,11 @@
/**
* Set whether to include the Transport Data descriptor, which has the list of supported
- * profiles. This is required by the spec, but if we can't get it, we recover gracefully by
- * assuming support for one of {A2DP, Headset}. Default is true.
+ * profiles. This is required by the spec, but if we can't get it, we recover gracefully
+ * by assuming support for one of {A2DP, Headset}. Default is true.
*/
- public Builder setIncludeTransportDataDescriptor(boolean includeTransportDataDescriptor) {
+ public Builder setIncludeTransportDataDescriptor(
+ boolean includeTransportDataDescriptor) {
this.mIncludeTransportDataDescriptor = includeTransportDataDescriptor;
return this;
}
@@ -915,7 +935,10 @@
return this;
}
- /** Non-public because this is required to create a builder. See {@link Options#builder}. */
+ /**
+ * Non-public because this is required to create a builder. See
+ * {@link Options#builder}.
+ */
public Builder setModelId(String modelId) {
this.mModelId = modelId;
return this;
@@ -959,7 +982,8 @@
String bluetoothAddress =
!TextUtils.isEmpty(options.getBluetoothAddress())
? options.getBluetoothAddress()
- : Settings.Secure.getString(context.getContentResolver(), "bluetooth_address");
+ : Settings.Secure.getString(context.getContentResolver(),
+ "bluetooth_address");
if (bluetoothAddress == null && VERSION.SDK_INT >= VERSION_CODES.O) {
// Requires a modified Android O build for access to bluetoothAdapter.getAddress().
// See http://google3/java/com/google/location/nearby/apps/fastpair/simulator/README.md.
@@ -979,12 +1003,12 @@
deviceName != null ? new String(deviceName, StandardCharsets.UTF_8) : null);
if (dataOnlyConnection) {
- // To get BLE address, we need to start advertising first, and then {@code #setBleAddress}
- // will be called with BLE address.
+ // To get BLE address, we need to start advertising first, and then
+ // {@code#setBleAddress} will be called with BLE address.
advertiser.startAdvertising(modelIdServiceData(/* forAdvertising= */ true));
} else {
- // TODO(jklinker): Make this so that the simulator doesn't start automatically. This is tricky
- // since the simulator is used in our integ tests as well.
+ // Make this so that the simulator doesn't start automatically.
+ // This is tricky since the simulator is used in our integ tests as well.
start(bleAddress != null ? bleAddress : bluetoothAddress);
}
}
@@ -1001,7 +1025,7 @@
(BluetoothManager) context.getSystemService(Context.BLUETOOTH_SERVICE);
BluetoothGattServerHelper bluetoothGattServerHelper =
new BluetoothGattServerHelper(context, wrap(bluetoothManager));
- bluetoothGattServerHelpers.put(address, bluetoothGattServerHelper);
+ mBluetoothGattServerHelpers.put(address, bluetoothGattServerHelper);
if (options.getBecomeDiscoverable()) {
try {
@@ -1018,8 +1042,8 @@
}
/**
- * Regenerate service data on a fixed interval. This causes the bloom filter to be refreshed and a
- * different salt to be used for rotation.
+ * Regenerate service data on a fixed interval.
+ * This causes the bloom filter to be refreshed and a different salt to be used for rotation.
*/
@SuppressWarnings("FutureReturnValueIgnored")
private void scheduleAdvertisingRefresh() {
@@ -1044,7 +1068,7 @@
isDestroyed = true;
context.unregisterReceiver(broadcastReceiver);
advertiser.stopAdvertising();
- for (BluetoothGattServerHelper helper : bluetoothGattServerHelpers.values()) {
+ for (BluetoothGattServerHelper helper : mBluetoothGattServerHelpers.values()) {
helper.close();
}
stopRfcommServer();
@@ -1088,8 +1112,8 @@
// When BLE address changes, needs to send BLE address to the client again.
sendDeviceBleAddress(bleAddress);
- // If we are advertising something other than the model id (eg the bloom filter), restart the
- // advertisement so that it is updated with the new address.
+ // If we are advertising something other than the model id (e.g. the bloom filter), restart
+ // the advertisement so that it is updated with the new address.
if (isAdvertising() && !isDiscoverable()) {
advertiser.startAdvertising(getServiceData());
}
@@ -1123,7 +1147,8 @@
characteristic.addDescriptor(
new BluetoothGattDescriptor(
Constants.CLIENT_CHARACTERISTIC_CONFIGURATION_DESCRIPTOR_UUID,
- BluetoothGattDescriptor.PERMISSION_READ | BluetoothGattDescriptor.PERMISSION_WRITE));
+ BluetoothGattDescriptor.PERMISSION_READ
+ | BluetoothGattDescriptor.PERMISSION_WRITE));
return characteristic;
}
@@ -1157,9 +1182,9 @@
for (Map.Entry<BluetoothGattServerConnection, Notifier> entry :
connections.entrySet()) {
try {
- logger.log(
- "Sending notify %s to %s",
- getCharacteristic(), entry.getKey().getDevice().getAddress());
+ logger.log("Sending notify %s to %s",
+ getCharacteristic(),
+ entry.getKey().getDevice().getAddress());
entry.getValue().notify(data);
} catch (BluetoothException e) {
logger.log(
@@ -1174,60 +1199,63 @@
}
private void startRfcommServer() {
- rfcommServer.setRequestHandler(
- (int eventGroup, int eventCode, byte[] data) -> {
- switch (eventGroup) {
- case EventStreamProtocol.EventGroup.DEVICE_VALUE:
- if (eventCode == EventStreamProtocol.DeviceEventCode.DEVICE_CAPABILITY_VALUE
- && data != null) {
- logger.log("Received phone capability: %s", base16().encode(data));
- } else if (eventCode == EventStreamProtocol.DeviceEventCode.PLATFORM_TYPE_VALUE
- && data != null) {
- logger.log("Received platform type: %s", base16().encode(data));
- }
- break;
- case EventStreamProtocol.EventGroup.DEVICE_ACTION_VALUE:
- if (eventCode == EventStreamProtocol.DeviceActionEventCode.DEVICE_ACTION_RING_VALUE) {
- logger.log("receive device action with ring value, data = %d", data[0]);
- sendDeviceRingActionResponse();
- // Simulate notifying the seeker that the ringing has stopped due to user
- // interaction (such as tapping the bud).
- uiThreadHandler.postDelayed(this::sendDeviceRingStoppedAction, 5000);
- }
- break;
- case EventStreamProtocol.EventGroup.DEVICE_CONFIGURATION_VALUE:
- if (eventCode
- == EventStreamProtocol.DeviceConfigurationEventCode.CONFIGURATION_BUFFER_SIZE_VALUE) {
- logger.log(
- "receive device action with buffer size value, data = %s",
- base16().encode(data));
- sendSetBufferActionResponse(data);
- }
- break;
- case EventStreamProtocol.EventGroup.DEVICE_CAPABILITY_SYNC_VALUE:
- if (eventCode
- == EventStreamProtocol.DeviceCapabilitySyncEventCode.REQUEST_CAPABILITY_UPDATE_VALUE) {
- logger.log("receive device capability update request.");
- sendCapabilitySync();
- }
- break;
- default: // fall out
- }
- });
- rfcommServer.setStateMonitor(
- state -> {
- logger.log("RfcommServer is in %s state", state);
- if (CONNECTED.equals(state)) {
- sendModelId();
- sendDeviceBleAddress(bleAddress);
- sendFirmwareVersion();
- sendSessionNonce();
- }
- });
-
+ rfcommServer.setRequestHandler(this::handleRfcommServerRequest);
+ rfcommServer.setStateMonitor(state -> {
+ logger.log("RfcommServer is in %s state", state);
+ if (CONNECTED.equals(state)) {
+ sendModelId();
+ sendDeviceBleAddress(bleAddress);
+ sendFirmwareVersion();
+ sendSessionNonce();
+ }
+ });
rfcommServer.start();
}
+ private void handleRfcommServerRequest(int eventGroup, int eventCode, byte[] data) {
+ switch (eventGroup) {
+ case EventGroup.DEVICE_VALUE:
+ if (data == null) {
+ break;
+ }
+
+ String deviceValue = base16().encode(data);
+ if (eventCode == DeviceEventCode.DEVICE_CAPABILITY_VALUE) {
+ logger.log("Received phone capability: %s", deviceValue);
+ } else if (eventCode == DeviceEventCode.PLATFORM_TYPE_VALUE) {
+ logger.log("Received platform type: %s", deviceValue);
+ }
+ break;
+ case EventGroup.DEVICE_ACTION_VALUE:
+ if (eventCode == DeviceActionEventCode.DEVICE_ACTION_RING_VALUE) {
+ logger.log("receive device action with ring value, data = %d",
+ data[0]);
+ sendDeviceRingActionResponse();
+ // Simulate notifying the seeker that the ringing has stopped due
+ // to user interaction (such as tapping the bud).
+ uiThreadHandler.postDelayed(this::sendDeviceRingStoppedAction,
+ 5000);
+ }
+ break;
+ case EventGroup.DEVICE_CONFIGURATION_VALUE:
+ if (eventCode == DeviceConfigurationEventCode.CONFIGURATION_BUFFER_SIZE_VALUE) {
+ logger.log(
+ "receive device action with buffer size value, data = %s",
+ base16().encode(data));
+ sendSetBufferActionResponse(data);
+ }
+ break;
+ case EventGroup.DEVICE_CAPABILITY_SYNC_VALUE:
+ if (eventCode == DeviceCapabilitySyncEventCode.REQUEST_CAPABILITY_UPDATE_VALUE) {
+ logger.log("receive device capability update request.");
+ sendCapabilitySync();
+ }
+ break;
+ default: // fall out
+ break;
+ }
+ }
+
private void stopRfcommServer() {
rfcommServer.stop();
rfcommServer.setRequestHandler(null);
@@ -1237,18 +1265,17 @@
private void sendModelId() {
logger.log("Send model ID to the client");
rfcommServer.send(
- EventStreamProtocol.EventGroup.DEVICE_VALUE,
- EventStreamProtocol.DeviceEventCode.DEVICE_MODEL_ID_VALUE,
+ EventGroup.DEVICE_VALUE,
+ DeviceEventCode.DEVICE_MODEL_ID_VALUE,
modelIdServiceData(/* forAdvertising= */ false));
}
private void sendDeviceBleAddress(String bleAddress) {
logger.log("Send BLE address (%s) to the client", bleAddress);
- // TODO(b/134244147): to solve central address resolution problem, adds api for simulator app.
if (bleAddress != null) {
rfcommServer.send(
- EventStreamProtocol.EventGroup.DEVICE_VALUE,
- EventStreamProtocol.DeviceEventCode.DEVICE_BLE_ADDRESS_VALUE,
+ EventGroup.DEVICE_VALUE,
+ DeviceEventCode.DEVICE_BLE_ADDRESS_VALUE,
BluetoothAddress.decode(bleAddress));
}
}
@@ -1256,8 +1283,8 @@
private void sendFirmwareVersion() {
logger.log("Send Firmware Version (%s) to the client", deviceFirmwareVersion);
rfcommServer.send(
- EventStreamProtocol.EventGroup.DEVICE_VALUE,
- EventStreamProtocol.DeviceEventCode.FIRMWARE_VERSION_VALUE,
+ EventGroup.DEVICE_VALUE,
+ DeviceEventCode.FIRMWARE_VERSION_VALUE,
deviceFirmwareVersion.getBytes());
}
@@ -1266,18 +1293,18 @@
SecureRandom secureRandom = new SecureRandom();
sessionNonce = new byte[SECTION_NONCE_LENGTH];
secureRandom.nextBytes(sessionNonce);
- rfcommServer.send(EventStreamProtocol.EventGroup.DEVICE_VALUE,
- EventStreamProtocol.DeviceEventCode.SECTION_NONCE_VALUE, sessionNonce);
+ rfcommServer.send(
+ EventGroup.DEVICE_VALUE, DeviceEventCode.SECTION_NONCE_VALUE, sessionNonce);
}
private void sendDeviceRingActionResponse() {
logger.log("Send device ring action response to the client");
rfcommServer.send(
- EventStreamProtocol.EventGroup.ACKNOWLEDGEMENT_VALUE,
- EventStreamProtocol.AcknowledgementEventCode.ACKNOWLEDGEMENT_ACK_VALUE,
+ EventGroup.ACKNOWLEDGEMENT_VALUE,
+ AcknowledgementEventCode.ACKNOWLEDGEMENT_ACK_VALUE,
new byte[]{
- EventStreamProtocol.EventGroup.DEVICE_ACTION_VALUE,
- EventStreamProtocol.DeviceActionEventCode.DEVICE_ACTION_RING_VALUE
+ EventGroup.DEVICE_ACTION_VALUE,
+ DeviceActionEventCode.DEVICE_ACTION_RING_VALUE
});
}
@@ -1285,10 +1312,11 @@
boolean hmacPassed = false;
for (ByteString accountKey : getAccountKeys()) {
try {
- if (MessageStreamHmacEncoder.verifyHmac(accountKey.toByteArray(), sessionNonce, data)) {
+ if (MessageStreamHmacEncoder.verifyHmac(
+ accountKey.toByteArray(), sessionNonce, data)) {
hmacPassed = true;
- logger.log(
- "Buffer size data matches account key %s", base16().encode(accountKey.toByteArray()));
+ logger.log("Buffer size data matches account key %s",
+ base16().encode(accountKey.toByteArray()));
break;
}
} catch (GeneralSecurityException e) {
@@ -1298,11 +1326,11 @@
if (hmacPassed) {
logger.log("Send buffer size action response %s to the client", base16().encode(data));
rfcommServer.send(
- EventStreamProtocol.EventGroup.ACKNOWLEDGEMENT_VALUE,
- EventStreamProtocol.AcknowledgementEventCode.ACKNOWLEDGEMENT_ACK_VALUE,
+ EventGroup.ACKNOWLEDGEMENT_VALUE,
+ AcknowledgementEventCode.ACKNOWLEDGEMENT_ACK_VALUE,
new byte[]{
- EventStreamProtocol.EventGroup.DEVICE_CONFIGURATION_VALUE,
- EventStreamProtocol.DeviceConfigurationEventCode.CONFIGURATION_BUFFER_SIZE_VALUE,
+ EventGroup.DEVICE_CONFIGURATION_VALUE,
+ DeviceConfigurationEventCode.CONFIGURATION_BUFFER_SIZE_VALUE,
data[0],
data[1],
data[2]
@@ -1317,8 +1345,8 @@
if (supportDynamicBufferSize) {
logger.log("Send dynamic buffer size range to the client");
rfcommServer.send(
- EventStreamProtocol.EventGroup.DEVICE_CAPABILITY_SYNC_VALUE,
- EventStreamProtocol.DeviceCapabilitySyncEventCode.CONFIGURABLE_BUFFER_SIZE_RANGE_VALUE,
+ EventGroup.DEVICE_CAPABILITY_SYNC_VALUE,
+ DeviceCapabilitySyncEventCode.CONFIGURABLE_BUFFER_SIZE_RANGE_VALUE,
new byte[]{
0x00, 0x01, (byte) 0xf4, 0x00, 0x64, 0x00, (byte) 0xc8,
0x01, 0x00, (byte) 0xff, 0x00, 0x01, 0x00, (byte) 0x88,
@@ -1332,8 +1360,8 @@
private void sendDeviceRingStoppedAction() {
logger.log("Sending device ring stopped action to the client");
rfcommServer.send(
- EventStreamProtocol.EventGroup.DEVICE_ACTION_VALUE,
- EventStreamProtocol.DeviceActionEventCode.DEVICE_ACTION_RING_VALUE,
+ EventGroup.DEVICE_ACTION_VALUE,
+ DeviceActionEventCode.DEVICE_ACTION_RING_VALUE,
// Additional data for stopping ringing on all components.
new byte[]{0x00});
}
@@ -1343,16 +1371,16 @@
new NotifiableGattServlet() {
@Override
public BluetoothGattCharacteristic getBaseCharacteristic() {
- return new BluetoothGattCharacteristic(
- TransportDiscoveryService.ControlPointCharacteristic.ID,
- PROPERTY_WRITE | PROPERTY_INDICATE,
- PERMISSION_WRITE);
+ return new BluetoothGattCharacteristic(ControlPointCharacteristic.ID,
+ PROPERTY_WRITE | PROPERTY_INDICATE, PERMISSION_WRITE);
}
@Override
- public void write(BluetoothGattServerConnection connection, int offset, byte[] value)
+ public void write(
+ BluetoothGattServerConnection connection, int offset, byte[] value)
throws BluetoothGattException {
- logger.log("Requested TDS Control Point write, value=%s", base16().encode(value));
+ logger.log("Requested TDS Control Point write, value=%s",
+ base16().encode(value));
ResultCode resultCode = checkTdsControlPointRequest(value);
if (resultCode == ResultCode.SUCCESS) {
@@ -1369,7 +1397,10 @@
logger.log("Sending TDS Control Point response indication");
sendNotification(
Bytes.concat(
- new byte[]{getTdsControlPointOpCode(value), resultCode.byteValue},
+ new byte[]{
+ getTdsControlPointOpCode(value),
+ resultCode.byteValue,
+ },
resultCode == ResultCode.SUCCESS
? TDS_CONTROL_POINT_RESPONSE_PARAMETER
: new byte[0]));
@@ -1381,17 +1412,14 @@
@Override
public BluetoothGattCharacteristic getCharacteristic() {
- return new BluetoothGattCharacteristic(
- TransportDiscoveryService.BrHandoverDataCharacteristic.ID,
- PROPERTY_READ,
- PERMISSION_READ);
+ return new BluetoothGattCharacteristic(BrHandoverDataCharacteristic.ID,
+ PROPERTY_READ, PERMISSION_READ);
}
@Override
- public byte[] read(BluetoothGattServerConnection connection, int offset)
- throws BluetoothGattException {
+ public byte[] read(BluetoothGattServerConnection connection, int offset) {
return Bytes.concat(
- new byte[]{TransportDiscoveryService.BrHandoverDataCharacteristic.BR_EDR_FEATURES},
+ new byte[]{BrHandoverDataCharacteristic.BR_EDR_FEATURES},
bluetoothAddress.getBytes(ByteOrder.LITTLE_ENDIAN),
CLASS_OF_DEVICE.getBytes(ByteOrder.LITTLE_ENDIAN));
}
@@ -1441,14 +1469,18 @@
}
@Override
- public void write(BluetoothGattServerConnection connection, int offset, byte[] value) {
- logger.log("Got value from account key servlet: %s", base16().encode(value));
+ public void write(
+ BluetoothGattServerConnection connection, int offset, byte[] value) {
+ logger.log("Got value from account key servlet: %s",
+ base16().encode(value));
try {
- addAccountKey(AesEcbSingleBlockEncryption.decrypt(secret, value), pairingDevice);
+ addAccountKey(AesEcbSingleBlockEncryption.decrypt(secret, value),
+ pairingDevice);
} catch (GeneralSecurityException e) {
logger.log(e, "Failed to decrypt account key.");
}
- uiThreadHandler.post(() -> advertiser.startAdvertising(accountKeysServiceData()));
+ uiThreadHandler.post(
+ () -> advertiser.startAdvertising(accountKeysServiceData()));
}
};
@@ -1469,7 +1501,8 @@
BluetoothGattServlet keyBasedPairingServlet =
new NotifiableGattServlet() {
@Override
- // Simulating deprecated API {@code KeyBasedPairingCharacteristic.ID} for testing.
+ // Simulating deprecated API {@code KeyBasedPairingCharacteristic.ID} for
+ // testing.
@SuppressWarnings("deprecation")
public BluetoothGattCharacteristic getBaseCharacteristic() {
return new BluetoothGattCharacteristic(
@@ -1479,9 +1512,10 @@
}
@Override
- public void write(BluetoothGattServerConnection connection, int offset, byte[] value)
- throws BluetoothGattException {
- logger.log("Requesting key based pairing handshake, value=%s", base16().encode(value));
+ public void write(
+ BluetoothGattServerConnection connection, int offset, byte[] value) {
+ logger.log("Requesting key based pairing handshake, value=%s",
+ base16().encode(value));
secret = null;
byte[] seekerPublicAddress = null;
@@ -1495,18 +1529,19 @@
isSubsequentPair = true;
break;
} catch (GeneralSecurityException e) {
- logger.log(e, "Failed to decrypt with %s", base16().encode(candidateSecret));
+ logger.log(e, "Failed to decrypt with %s",
+ base16().encode(candidateSecret));
}
}
- } else if (value.length
- == AES_BLOCK_LENGTH + EllipticCurveDiffieHellmanExchange.PUBLIC_KEY_LENGTH
+ } else if (value.length == AES_BLOCK_LENGTH + PUBLIC_KEY_LENGTH
&& options.getAntiSpoofingPrivateKey() != null) {
try {
byte[] encryptedRequest = Arrays.copyOf(value, AES_BLOCK_LENGTH);
byte[] receivedPublicKey =
Arrays.copyOfRange(value, AES_BLOCK_LENGTH, value.length);
byte[] candidateSecret =
- EllipticCurveDiffieHellmanExchange.create(options.getAntiSpoofingPrivateKey())
+ EllipticCurveDiffieHellmanExchange.create(
+ options.getAntiSpoofingPrivateKey())
.generateSecret(receivedPublicKey);
seekerPublicAddress = handshake(candidateSecret, encryptedRequest);
secret = candidateSecret;
@@ -1530,54 +1565,61 @@
byte[] salt = new byte[9];
new Random().nextBytes(salt);
try {
- byte[] encryptedAddress =
- encrypt(
- secret,
- Bytes.concat(
- new byte[]{KeyBasedPairingCharacteristic.Response.TYPE},
- bluetoothAddress.getBytes(ByteOrder.BIG_ENDIAN),
- salt));
+ byte[] data = concat(
+ new byte[]{KeyBasedPairingCharacteristic.Response.TYPE},
+ bluetoothAddress.getBytes(ByteOrder.BIG_ENDIAN), salt);
+ byte[] encryptedAddress = encrypt(secret, data);
logger.log(
"Sending handshake response %s with size %d",
base16().encode(encryptedAddress), encryptedAddress.length);
sendNotification(encryptedAddress);
- // Notify seeker for NameCharacteristic to get provider device name when seeker
- // request device name flag is true.
- if (options.getEnableNameCharacteristic() && handshakeRequest.requestDeviceName()) {
+ // Notify seeker for NameCharacteristic to get provider device name
+ // when seeker request device name flag is true.
+ if (options.getEnableNameCharacteristic()
+ && handshakeRequest.requestDeviceName()) {
byte[] encryptedResponse =
- getDeviceNameInBytes() != null ? createEncryptedDeviceName() : new byte[0];
+ getDeviceNameInBytes() != null ? createEncryptedDeviceName()
+ : new byte[0];
logger.log(
"Sending device name response %s with size %d",
- base16().encode(encryptedResponse), encryptedResponse.length);
+ base16().encode(encryptedResponse),
+ encryptedResponse.length);
deviceNameServlet.sendNotification(encryptedResponse);
}
- // Disconnects the current connection to allow the following pairing request.
- // Needs to be on a separate thread to avoid deadlocking and timing out (waits for a
- // callback from OS, which happens on this thread).
+ // Disconnects the current connection to allow the following pairing
+ // request. Needs to be on a separate thread to avoid deadlocking and
+ // timing out (waits for a callback from OS, which happens on this
+ // thread).
//
- // Note: The spec does not require you to disconnect from other devices at this point.
- // If headphones support multiple simultaneous connections, they should stay
- // connected. But Android fails to pair with the new device if we don't first
- // disconnect from any other device.
- logger.log("Skip remove bond, value=%s", options.getRemoveAllDevicesDuringPairing());
+ // Note: The spec does not require you to disconnect from other
+ // devices at this point.
+ // If headphones support multiple simultaneous connections, they
+ // should stay connected. But Android fails to pair with the new
+ // device if we don't first disconnect from any other device.
+ logger.log("Skip remove bond, value=%s",
+ options.getRemoveAllDevicesDuringPairing());
if (options.getRemoveAllDevicesDuringPairing()
- && handshakeRequest.getType() == HandshakeRequest.Type.KEY_BASED_PAIRING_REQUEST
+ && handshakeRequest.getType()
+ == HandshakeRequest.Type.KEY_BASED_PAIRING_REQUEST
&& !handshakeRequest.requestRetroactivePair()) {
executor.execute(() -> disconnect());
}
- if (handshakeRequest.getType() == HandshakeRequest.Type.KEY_BASED_PAIRING_REQUEST
+ if (handshakeRequest.getType()
+ == HandshakeRequest.Type.KEY_BASED_PAIRING_REQUEST
&& handshakeRequest.requestProviderInitialBonding()) {
- // Run on executor to ensure it doesn't happen until after the notify (which tells
- // the remote device what address to expect).
- String seekerPublicAddressString = BluetoothAddress.encode(seekerPublicAddress);
- executor.execute(
- () -> {
- logger.log("Sending pairing request to %s", seekerPublicAddressString);
- bluetoothAdapter.getRemoteDevice(seekerPublicAddressString).createBond();
- });
+ // Run on executor to ensure it doesn't happen until after the
+ // notify (which tells the remote device what address to expect).
+ String seekerPublicAddressString =
+ BluetoothAddress.encode(seekerPublicAddress);
+ executor.execute(() -> {
+ logger.log("Sending pairing request to %s",
+ seekerPublicAddressString);
+ bluetoothAdapter.getRemoteDevice(
+ seekerPublicAddressString).createBond();
+ });
}
} catch (GeneralSecurityException e) {
logger.log(e, "Failed to notify of static mac address");
@@ -1591,9 +1633,10 @@
byte[] decryptedAddress = handshakeRequest.getVerificationData();
if (bleAddress != null
- && Arrays.equals(decryptedAddress, BluetoothAddress.decode(bleAddress))
- || (Arrays.equals(
- decryptedAddress, bluetoothAddress.getBytes(ByteOrder.BIG_ENDIAN)))) {
+ && Arrays.equals(decryptedAddress,
+ BluetoothAddress.decode(bleAddress))
+ || Arrays.equals(decryptedAddress,
+ bluetoothAddress.getBytes(ByteOrder.BIG_ENDIAN))) {
logger.log("Address matches: %s", base16().encode(decryptedAddress));
} else {
throw new GeneralSecurityException(
@@ -1626,7 +1669,8 @@
}
logger.log(
- "KeyBasedPairing: initialBonding=%s, requestDeviceName=%s, retroactivePair=%s",
+ "KeyBasedPairing: initialBonding=%s, requestDeviceName=%s, "
+ + "retroactivePair=%s",
handshakeRequest.requestProviderInitialBonding(),
handshakeRequest.requestDeviceName(),
handshakeRequest.requestRetroactivePair());
@@ -1659,7 +1703,8 @@
logger.log("Requesting action over BLE, device action");
} else if (handshakeRequest.requestFollowedByAdditionalData()) {
logger.log(
- "Requesting action over BLE, followed by additional data, type:%s",
+ "Requesting action over BLE, followed by additional data, "
+ + "type:%s",
handshakeRequest.getAdditionalDataType());
} else {
logger.log("Requesting action over BLE");
@@ -1668,8 +1713,7 @@
}
/**
- * @return The encrypted device name from provider for seeker to use. See
- * go/fast-pair-naming-design-doc for the encryption detail to encrypt device name.
+ * @return The encrypted device name from provider for seeker to use.
*/
private byte[] createEncryptedDeviceName() throws GeneralSecurityException {
byte[] deviceName = getDeviceNameInBytes();
@@ -1703,7 +1747,8 @@
sha256 = MessageDigest.getInstance("SHA-256");
sha256.reset();
} catch (NoSuchAlgorithmException e) {
- throw new IllegalStateException("System missing SHA-256 implementation.", e);
+ throw new IllegalStateException(
+ "System missing SHA-256 implementation.", e);
}
}
@@ -1725,12 +1770,15 @@
}
@Override
- public void write(BluetoothGattServerConnection connection, int offset, byte[] value)
+ public void write(
+ BluetoothGattServerConnection connection, int offset, byte[] value)
throws BluetoothGattException {
- logger.log("Got value from beacon actions servlet: %s", base16().encode(value));
+ logger.log("Got value from beacon actions servlet: %s",
+ base16().encode(value));
if (value.length == 0) {
logger.log("Packet length invalid, %d", value.length);
- throw new BluetoothGattException("Packet length invalid", GATT_ERROR_INVALID_VALUE);
+ throw new BluetoothGattException("Packet length invalid",
+ GATT_ERROR_INVALID_VALUE);
}
switch (value[0]) {
case BeaconActionType.READ_BEACON_PARAMETERS:
@@ -1747,10 +1795,12 @@
case BeaconActionType.RING:
case BeaconActionType.READ_RINGING_STATE:
throw new BluetoothGattException(
- "Unimplemented beacon action", BluetoothGatt.GATT_REQUEST_NOT_SUPPORTED);
+ "Unimplemented beacon action",
+ BluetoothGatt.GATT_REQUEST_NOT_SUPPORTED);
default:
throw new BluetoothGattException(
- "Unknown beacon action", BluetoothGatt.GATT_REQUEST_NOT_SUPPORTED);
+ "Unknown beacon action",
+ BluetoothGatt.GATT_REQUEST_NOT_SUPPORTED);
}
}
@@ -1758,7 +1808,8 @@
throws BluetoothGattException {
if (value.length < ONE_TIME_AUTH_KEY_LENGTH + ONE_TIME_AUTH_KEY_OFFSET) {
logger.log("Packet length invalid, %d", value.length);
- throw new BluetoothGattException("Packet length invalid", GATT_ERROR_INVALID_VALUE);
+ throw new BluetoothGattException(
+ "Packet length invalid", GATT_ERROR_INVALID_VALUE);
}
byte[] hashedAccountKey =
Arrays.copyOfRange(
@@ -1766,7 +1817,8 @@
ONE_TIME_AUTH_KEY_OFFSET,
ONE_TIME_AUTH_KEY_LENGTH + ONE_TIME_AUTH_KEY_OFFSET);
if (lastNonce == null) {
- throw new BluetoothGattException("Nonce wasn't set", GATT_ERROR_UNAUTHENTICATED);
+ throw new BluetoothGattException(
+ "Nonce wasn't set", GATT_ERROR_UNAUTHENTICATED);
}
if (ownerOnly) {
ByteString accountKey = getOwnerAccountKey();
@@ -1774,7 +1826,8 @@
sha256.update(accountKey.toByteArray());
sha256.update(lastNonce);
return Arrays.equals(
- hashedAccountKey, Arrays.copyOf(sha256.digest(), ONE_TIME_AUTH_KEY_LENGTH));
+ hashedAccountKey,
+ Arrays.copyOf(sha256.digest(), ONE_TIME_AUTH_KEY_LENGTH));
}
} else {
Set<ByteString> accountKeys = getAccountKeys();
@@ -1782,7 +1835,8 @@
sha256.update(accountKey.toByteArray());
sha256.update(lastNonce);
if (Arrays.equals(
- hashedAccountKey, Arrays.copyOf(sha256.digest(), ONE_TIME_AUTH_KEY_LENGTH))) {
+ hashedAccountKey,
+ Arrays.copyOf(sha256.digest(), ONE_TIME_AUTH_KEY_LENGTH))) {
return true;
}
}
@@ -1807,24 +1861,29 @@
return data;
}
- private void handleReadBeaconParameters(byte[] value) throws BluetoothGattException {
+ private void handleReadBeaconParameters(byte[] value)
+ throws BluetoothGattException {
if (!verifyAccountKeyToken(value, /* ownerOnly= */ false)) {
throw new BluetoothGattException(
- "failed to authenticate account key", GATT_ERROR_UNAUTHENTICATED);
+ "failed to authenticate account key",
+ GATT_ERROR_UNAUTHENTICATED);
}
sendNotification(
fromBytes(
(byte) BeaconActionType.READ_BEACON_PARAMETERS,
(byte) 5 /* data length */,
TRANSMISSION_POWER)
- .concat(ByteString.copyFrom(intToByteArray(getBeaconClock())))
+ .concat(ByteString.copyFrom(
+ intToByteArray(getBeaconClock())))
.toByteArray());
}
- private void handleReadProvisioningState(byte[] value) throws BluetoothGattException {
+ private void handleReadProvisioningState(byte[] value)
+ throws BluetoothGattException {
if (!verifyAccountKeyToken(value, /* ownerOnly= */ false)) {
throw new BluetoothGattException(
- "failed to authenticate account key", GATT_ERROR_UNAUTHENTICATED);
+ "failed to authenticate account key",
+ GATT_ERROR_UNAUTHENTICATED);
}
byte flags = 0;
if (verifyAccountKeyToken(value, /* ownerOnly= */ true)) {
@@ -1846,30 +1905,36 @@
flags)
.concat(
E2eeCalculator.computeE2eeEid(
- identityKey, /* exponent= */ 10, getBeaconClock()))
+ identityKey, /* exponent= */ 10,
+ getBeaconClock()))
.toByteArray());
}
}
- private void handleSetEphemeralIdentityKey(byte[] value) throws BluetoothGattException {
+ private void handleSetEphemeralIdentityKey(byte[] value)
+ throws BluetoothGattException {
if (!verifyAccountKeyToken(value, /* ownerOnly= */ true)) {
throw new BluetoothGattException(
- "failed to authenticate owner account key", GATT_ERROR_UNAUTHENTICATED);
+ "failed to authenticate owner account key",
+ GATT_ERROR_UNAUTHENTICATED);
}
if (value.length
- != ONE_TIME_AUTH_KEY_LENGTH + ONE_TIME_AUTH_KEY_OFFSET + IDENTITY_KEY_LENGTH) {
+ != ONE_TIME_AUTH_KEY_LENGTH + ONE_TIME_AUTH_KEY_OFFSET
+ + IDENTITY_KEY_LENGTH) {
logger.log("Packet length invalid, %d", value.length);
- throw new BluetoothGattException("Packet length invalid", GATT_ERROR_INVALID_VALUE);
+ throw new BluetoothGattException("Packet length invalid",
+ GATT_ERROR_INVALID_VALUE);
}
if (identityKey != null) {
throw new BluetoothGattException(
- "Device is already provisioned as Eddystone", GATT_ERROR_UNAUTHENTICATED);
+ "Device is already provisioned as Eddystone",
+ GATT_ERROR_UNAUTHENTICATED);
}
- identityKey =
- Crypto.aesEcbNoPaddingDecrypt(
- ByteString.copyFrom(ownerAccountKey),
- ByteString.copyFrom(value)
- .substring(ONE_TIME_AUTH_KEY_LENGTH + ONE_TIME_AUTH_KEY_OFFSET));
+ identityKey = Crypto.aesEcbNoPaddingDecrypt(
+ ByteString.copyFrom(ownerAccountKey),
+ ByteString.copyFrom(value)
+ .substring(ONE_TIME_AUTH_KEY_LENGTH
+ + ONE_TIME_AUTH_KEY_OFFSET));
}
};
@@ -1916,7 +1981,8 @@
logger.log("enterPassKey called with passkey %d.", passkey);
try {
boolean result =
- (Boolean) Reflect.on(pairingDevice).withMethod("setPasskey", int.class).get(passkey);
+ (Boolean) Reflect.on(pairingDevice).withMethod("setPasskey", int.class).get(
+ passkey);
logger.log("enterPassKey called with result %b", result);
} catch (ReflectionException e) {
logger.log("enterPassKey meet Exception %s.", e.getMessage());
@@ -1938,7 +2004,8 @@
logger.log("Checking localPasskey %s == remotePasskey %s", localPasskey, remotePasskey);
boolean passkeysMatched = localPasskey == remotePasskey;
- if (options.getShowsPasskeyConfirmation() && passkeysMatched && passkeyEventCallback != null) {
+ if (options.getShowsPasskeyConfirmation() && passkeysMatched
+ && passkeyEventCallback != null) {
logger.log("callbacks the UI for passkey confirmation.");
passkeyEventCallback.onPasskeyConfirmation(localPasskey, this::setPasskeyConfirmation);
} else {
@@ -1949,7 +2016,8 @@
private void sendPasskeyToRemoteDevice(int passkey) {
try {
passkeyServlet.sendNotification(
- PasskeyCharacteristic.encrypt(PasskeyCharacteristic.Type.PROVIDER, secret, passkey));
+ PasskeyCharacteristic.encrypt(
+ PasskeyCharacteristic.Type.PROVIDER, secret, passkey));
} catch (GeneralSecurityException e) {
logger.log(e, "Failed to encrypt passkey response.");
}
@@ -1996,7 +2064,8 @@
setDiscoverable(false);
}
- private void setDiscoverable(boolean discoverable) throws InterruptedException, TimeoutException {
+ private void setDiscoverable(boolean discoverable)
+ throws InterruptedException, TimeoutException {
isDiscoverableLatch = new CountDownLatch(1);
setScanMode(discoverable ? SCAN_MODE_CONNECTABLE_DISCOVERABLE : SCAN_MODE_CONNECTABLE);
// If we're already discoverable, count down the latch right away. Otherwise,
@@ -2049,11 +2118,12 @@
private ResultCode checkTdsControlPointRequest(byte[] request) {
if (request.length < 2) {
logger.log(
- new IllegalArgumentException(), "Expected length >= 2 for %s", base16().encode(request));
+ new IllegalArgumentException(), "Expected length >= 2 for %s",
+ base16().encode(request));
return ResultCode.INVALID_PARAMETER;
}
byte opCode = getTdsControlPointOpCode(request);
- if (opCode != TransportDiscoveryService.ControlPointCharacteristic.ACTIVATE_TRANSPORT_OP_CODE) {
+ if (opCode != ControlPointCharacteristic.ACTIVATE_TRANSPORT_OP_CODE) {
logger.log(
new IllegalArgumentException(),
"Expected Activate Transport op code (0x01), got %d",
@@ -2067,7 +2137,6 @@
request[1]);
return ResultCode.UNSUPPORTED_ORGANIZATION_ID;
}
- // TODO(jfarfel): Parse out the requested service UUIDs, and if they don't include A2DP, fail.
return ResultCode.SUCCESS;
}
@@ -2082,10 +2151,11 @@
private byte[] modelIdServiceData(boolean forAdvertising) {
// Note: This used to be little-endian but is now big-endian. See b/78229467 for details.
byte[] modelIdPacket =
- base16().decode(forAdvertising ? options.getAdvertisingModelId() : options.getModelId());
+ base16().decode(
+ forAdvertising ? options.getAdvertisingModelId() : options.getModelId());
if (!batteryValues.isEmpty()) {
- // If we are going to advertise battery values with the packet, then switch to the non-3-byte
- // model ID format from go/fast-pair-service-data.
+ // If we are going to advertise battery values with the packet, then switch to the
+ // non-3-byte model ID format.
modelIdPacket = concat(new byte[]{0b00000110}, modelIdPacket);
}
return modelIdPacket;
@@ -2115,15 +2185,15 @@
}
BloomFilter bloomFilter =
new BloomFilter(
- new byte[(int) (1.2 * accountKeys.size()) + 3], new FastPairBloomFilterHasher());
+ new byte[(int) (1.2 * accountKeys.size()) + 3],
+ new FastPairBloomFilterHasher());
String address = bleAddress == null ? SIMULATOR_FAKE_BLE_ADDRESS : bleAddress;
- // Simulator supports Central Address Resolution characteristic, so when paired, the BLE address
- // in Seeker will be resolved to BR/EDR address. This caused Seeker fails on checking the bloom
- // filter due to different address is used for salting. In order to let battery values
- // notification be shown on paired device, we use random salt to workaround it.
- // TODO(tonyysliu): Remove this workaround when simulator does not support Central Address
- // Resolution characteristic.
+ // Simulator supports Central Address Resolution characteristic, so when paired, the BLE
+ // address in Seeker will be resolved to BR/EDR address. This caused Seeker fails on
+ // checking the bloom filter due to different address is used for salting. In order to
+ // let battery values notification be shown on paired device, we use random salt to
+ // workaround it.
boolean advertisingBatteryValues = !batteryValues.isEmpty();
byte[] salt;
if (options.getUseRandomSaltForAccountKeyRotation() || advertisingBatteryValues) {
@@ -2157,9 +2227,10 @@
}
/**
- * Creates a new field for the packet. The header is formatted 0xLLLLTTTT where LLLL is the length
- * of the field and TTTT is the type (0 for bloom filter, 1 for salt). See go/fast-pair-2-spec for
- * more information.
+ * Creates a new field for the packet.
+ *
+ * The header is formatted 0xLLLLTTTT where LLLL is the
+ * length of the field and TTTT is the type (0 for bloom filter, 1 for salt).
*/
private byte[] createField(byte header, byte[] value) {
return concat(new byte[]{header}, value);
@@ -2188,13 +2259,13 @@
}
private byte[] generateBatteryData() {
- // Byte 0: Battery length and type, first 4 bits are the number of battery values, second 4 are
- // the type. See go/fast-pair-2-service-data for the battery type definitions.
+ // Byte 0: Battery length and type, first 4 bits are the number of battery values, second
+ // 4 are the type.
// Byte 1 - length: Battery values, the first bit is charging status, the remaining bits are
// the actual value between 0 and 100, or -1 for unknown.
byte[] batteryData = new byte[batteryValues.size() + 1];
- batteryData[0] =
- (byte) (batteryValues.size() << 4 | (suppressBatteryNotification ? 0b0100 : 0b0011));
+ batteryData[0] = (byte) (batteryValues.size() << 4
+ | (suppressBatteryNotification ? 0b0100 : 0b0011));
int batteryValueIndex = 1;
for (BatteryValue batteryValue : batteryValues) {
@@ -2208,13 +2279,12 @@
}
private byte[] generateAccountKeyData(BloomFilter bloomFilter) {
- // Byte 0: length and type, first 4 bits are the length of bloom filter, second 4 are the type
- // which inditcating the subsequent pairing notification is suppressed or not.
+ // Byte 0: length and type, first 4 bits are the length of bloom filter, second 4 are the
+ // type which indicating the subsequent pairing notification is suppressed or not.
// The following bytes are the data of bloom filter.
byte[] filterBytes = bloomFilter.asBytes();
- byte lengthAndType =
- (byte)
- (filterBytes.length << 4 | (suppressSubsequentPairingNotification ? 0b0010 : 0b0000));
+ byte lengthAndType = (byte) (filterBytes.length << 4
+ | (suppressSubsequentPairingNotification ? 0b0010 : 0b0000));
logger.log(
"Generate bloom filter with suppress subsequent pairing notification:%b",
suppressSubsequentPairingNotification);
