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Merge branch '1147-bluetooth-discovery' into 'master'

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Support Bluetooth discovery for adding contacts

See merge request briar/briar!954
This commit is contained in:
akwizgran
2018-10-29 14:35:17 +00:00
parent 53da13794f 9c4fb4fd34
commit fcb88ed58c
10 changed files with 332 additions and 123 deletions
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52
bramble-core/src/main/java/org/briarproject/bramble/plugin/bluetooth/BluetoothPlugin.java
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@@ -23,7 +23,6 @@ import org.briarproject.bramble.api.plugin.event.EnableBluetoothEvent;
import org.briarproject.bramble.api.properties.TransportProperties;
import org.briarproject.bramble.api.settings.Settings;
import org.briarproject.bramble.api.settings.event.SettingsUpdatedEvent;
import org.briarproject.bramble.util.StringUtils;
import java.io.IOException;
import java.security.SecureRandom;
@@ -46,6 +45,9 @@ import static org.briarproject.bramble.api.plugin.BluetoothConstants.PROP_UUID;
import static org.briarproject.bramble.api.plugin.BluetoothConstants.UUID_BYTES;
import static org.briarproject.bramble.util.LogUtils.logException;
import static org.briarproject.bramble.util.PrivacyUtils.scrubMacAddress;
import static org.briarproject.bramble.util.StringUtils.isNullOrEmpty;
import static org.briarproject.bramble.util.StringUtils.macToBytes;
import static org.briarproject.bramble.util.StringUtils.macToString;
@MethodsNotNullByDefault
@ParametersNotNullByDefault
@@ -96,6 +98,9 @@ abstract class BluetoothPlugin<SS> implements DuplexPlugin, EventListener {
abstract DuplexTransportConnection connectTo(String address, String uuid)
throws IOException;
@Nullable
abstract DuplexTransportConnection discoverAndConnect(String uuid);
BluetoothPlugin(BluetoothConnectionLimiter connectionLimiter,
Executor ioExecutor, SecureRandom secureRandom,
Backoff backoff, DuplexPluginCallback callback, int maxLatency) {
@@ -193,7 +198,7 @@ abstract class BluetoothPlugin<SS> implements DuplexPlugin, EventListener {
address = getBluetoothAddress();
if (LOG.isLoggable(INFO))
LOG.info("Local address " + scrubMacAddress(address));
if (!StringUtils.isNullOrEmpty(address)) {
if (!isNullOrEmpty(address)) {
p.put(PROP_ADDRESS, address);
changed = true;
}
@@ -256,9 +261,9 @@ abstract class BluetoothPlugin<SS> implements DuplexPlugin, EventListener {
// Try to connect to known devices in parallel
for (Entry<ContactId, TransportProperties> e : contacts.entrySet()) {
String address = e.getValue().get(PROP_ADDRESS);
if (StringUtils.isNullOrEmpty(address)) continue;
if (isNullOrEmpty(address)) continue;
String uuid = e.getValue().get(PROP_UUID);
if (StringUtils.isNullOrEmpty(uuid)) continue;
if (isNullOrEmpty(uuid)) continue;
ContactId c = e.getKey();
ioExecutor.execute(() -> {
if (!isRunning() || !shouldAllowContactConnections()) return;
@@ -309,9 +314,9 @@ abstract class BluetoothPlugin<SS> implements DuplexPlugin, EventListener {
if (!isRunning() || !shouldAllowContactConnections()) return null;
if (!connectionLimiter.canOpenContactConnection()) return null;
String address = p.get(PROP_ADDRESS);
if (StringUtils.isNullOrEmpty(address)) return null;
if (isNullOrEmpty(address)) return null;
String uuid = p.get(PROP_UUID);
if (StringUtils.isNullOrEmpty(uuid)) return null;
if (isNullOrEmpty(uuid)) return null;
DuplexTransportConnection conn = connect(address, uuid);
if (conn == null) return null;
// TODO: Why don't we reset the backoff here?
@@ -326,9 +331,6 @@ abstract class BluetoothPlugin<SS> implements DuplexPlugin, EventListener {
@Override
public KeyAgreementListener createKeyAgreementListener(byte[] commitment) {
if (!isRunning()) return null;
// There's no point listening if we can't discover our own address
String address = getBluetoothAddress();
if (address == null) return null;
// No truncation necessary because COMMIT_LENGTH = 16
String uuid = UUID.nameUUIDFromBytes(commitment).toString();
if (LOG.isLoggable(INFO)) LOG.info("Key agreement UUID " + uuid);
@@ -346,7 +348,8 @@ abstract class BluetoothPlugin<SS> implements DuplexPlugin, EventListener {
}
BdfList descriptor = new BdfList();
descriptor.add(TRANSPORT_ID_BLUETOOTH);
descriptor.add(StringUtils.macToBytes(address));
String address = getBluetoothAddress();
if (address != null) descriptor.add(macToBytes(address));
return new BluetoothKeyAgreementListener(descriptor, ss);
}
@@ -354,18 +357,25 @@ abstract class BluetoothPlugin<SS> implements DuplexPlugin, EventListener {
public DuplexTransportConnection createKeyAgreementConnection(
byte[] commitment, BdfList descriptor) {
if (!isRunning()) return null;
String address;
try {
address = parseAddress(descriptor);
} catch (FormatException e) {
LOG.info("Invalid address in key agreement descriptor");
return null;
}
// No truncation necessary because COMMIT_LENGTH = 16
String uuid = UUID.nameUUIDFromBytes(commitment).toString();
if (LOG.isLoggable(INFO))
LOG.info("Connecting to key agreement UUID " + uuid);
DuplexTransportConnection conn = connect(address, uuid);
DuplexTransportConnection conn;
if (descriptor.size() == 1) {
if (LOG.isLoggable(INFO))
LOG.info("Discovering address for key agreement UUID " + uuid);
conn = discoverAndConnect(uuid);
} else {
String address;
try {
address = parseAddress(descriptor);
} catch (FormatException e) {
LOG.info("Invalid address in key agreement descriptor");
return null;
}
if (LOG.isLoggable(INFO))
LOG.info("Connecting to key agreement UUID " + uuid);
conn = connect(address, uuid);
}
if (conn != null) connectionLimiter.keyAgreementConnectionOpened(conn);
return conn;
}
@@ -373,7 +383,7 @@ abstract class BluetoothPlugin<SS> implements DuplexPlugin, EventListener {
private String parseAddress(BdfList descriptor) throws FormatException {
byte[] mac = descriptor.getRaw(1);
if (mac.length != 6) throw new FormatException();
return StringUtils.macToString(mac);
return macToString(mac);
}
@Override