public NamingProvider createProvider(
final URI providerUri, final FastHashtable<String, Object> env) throws NamingException {
// Legacy naming constants
final Endpoint endpoint = getEndpoint(env);
final String callbackClass = getStringProperty(CALLBACK_HANDLER_KEY, env);
final String userName = getStringProperty(Context.SECURITY_PRINCIPAL, env);
final String password = getStringProperty(Context.SECURITY_CREDENTIALS, env);
final String passwordBase64 = getStringProperty(PASSWORD_BASE64_KEY, env);
final String realm = getStringProperty(REALM_KEY, env);
boolean useSeparateConnection =
Boolean.parseBoolean(String.valueOf(env.get(USE_SEPARATE_CONNECTION)));
AuthenticationContext captured = AuthenticationContext.captureCurrent();
AuthenticationConfiguration mergedConfiguration =
AUTH_CONFIGURATION_CLIENT.getAuthenticationConfiguration(providerUri, captured);
if (callbackClass != null && (userName != null || password != null)) {
throw Messages.log.callbackHandlerAndUsernameAndPasswordSpecified();
}
if (callbackClass != null) {
final ClassLoader classLoader = secureGetContextClassLoader();
try {
final Class<?> clazz = Class.forName(callbackClass, true, classLoader);
final CallbackHandler callbackHandler = (CallbackHandler) clazz.newInstance();
if (callbackHandler != null) {
mergedConfiguration = mergedConfiguration.useCallbackHandler(callbackHandler);
}
} catch (ClassNotFoundException e) {
throw Messages.log.failedToLoadCallbackHandlerClass(e, callbackClass);
} catch (Exception e) {
throw Messages.log.failedToInstantiateCallbackHandlerInstance(e, callbackClass);
}
} else if (userName != null) {
if (password != null && passwordBase64 != null) {
throw Messages.log.plainTextAndBase64PasswordSpecified();
}
final String decodedPassword =
passwordBase64 != null
? CodePointIterator.ofString(passwordBase64)
.base64Decode()
.asUtf8String()
.drainToString()
: password;
mergedConfiguration =
mergedConfiguration.useName(userName).usePassword(decodedPassword).useRealm(realm);
}
final AuthenticationContext context =
AuthenticationContext.empty().with(MatchRule.ALL, mergedConfiguration);
if (useSeparateConnection) {
// create a brand new connection - if there is authentication info in the env, use it
final Connection connection;
try {
connection = endpoint.connect(providerUri, OptionMap.EMPTY, context).get();
} catch (IOException e) {
throw Messages.log.connectFailed(e);
}
final RemoteNamingProvider provider = new RemoteNamingProvider(connection, context, env);
connection.getAttachments().attach(PROVIDER_KEY, provider);
return provider;
} else if (env.containsKey(CONNECTION)) {
final Connection connection = (Connection) env.get(CONNECTION);
final RemoteNamingProvider provider = new RemoteNamingProvider(connection, context, env);
connection.getAttachments().attach(PROVIDER_KEY, provider);
return provider;
} else {
final Attachments attachments = endpoint.getAttachments();
ProviderMap map = attachments.getAttachment(PROVIDER_MAP_KEY);
if (map == null) {
ProviderMap appearing =
attachments.attachIfAbsent(PROVIDER_MAP_KEY, map = new ProviderMap());
if (appearing != null) {
map = appearing;
}
}
final URIKey key =
new URIKey(
providerUri.getScheme(),
providerUri.getUserInfo(),
providerUri.getHost(),
providerUri.getPort());
RemoteNamingProvider provider = map.get(key);
if (provider == null) {
RemoteNamingProvider appearing =
map.putIfAbsent(
key, provider = new RemoteNamingProvider(endpoint, providerUri, context, env));
if (appearing != null) {
provider = appearing;
}
}
return provider;
}
}
public void handleEvent(final ConnectedMessageChannel channel) {
final Pooled<ByteBuffer> pooledReceiveBuffer = connection.allocate();
try {
final ByteBuffer receiveBuffer = pooledReceiveBuffer.getResource();
synchronized (connection.getLock()) {
int res;
try {
res = channel.receive(receiveBuffer);
} catch (IOException e) {
connection.handleException(e);
return;
}
if (res == -1) {
connection.handleException(client.abruptClose(connection));
return;
}
if (res == 0) {
return;
}
}
receiveBuffer.flip();
boolean starttls = false;
final Set<String> serverSaslMechs = new LinkedHashSet<String>();
final byte msgType = receiveBuffer.get();
switch (msgType) {
case Protocol.CONNECTION_ALIVE:
{
client.trace("Client received connection alive");
connection.sendAliveResponse();
return;
}
case Protocol.CONNECTION_ALIVE_ACK:
{
client.trace("Client received connection alive ack");
return;
}
case Protocol.CONNECTION_CLOSE:
{
client.trace("Client received connection close request");
connection.handlePreAuthCloseRequest();
return;
}
case Protocol.CAPABILITIES:
{
client.trace("Client received capabilities response");
String remoteEndpointName = null;
int version = Protocol.VERSION;
int behavior = Protocol.BH_FAULTY_MSG_SIZE;
boolean useDefaultChannels = true;
int channelsIn = 40;
int channelsOut = 40;
while (receiveBuffer.hasRemaining()) {
final byte type = receiveBuffer.get();
final int len = receiveBuffer.get() & 0xff;
final ByteBuffer data = Buffers.slice(receiveBuffer, len);
switch (type) {
case Protocol.CAP_VERSION:
{
version = data.get() & 0xff;
client.tracef(
"Client received capability: version %d",
Integer.valueOf(version & 0xff));
break;
}
case Protocol.CAP_SASL_MECH:
{
final String mechName = Buffers.getModifiedUtf8(data);
client.tracef("Client received capability: SASL mechanism %s", mechName);
if (!failedMechs.containsKey(mechName)
&& !disallowedMechs.contains(mechName)
&& (allowedMechs == null || allowedMechs.contains(mechName))) {
client.tracef("SASL mechanism %s added to allowed set", mechName);
serverSaslMechs.add(mechName);
}
break;
}
case Protocol.CAP_STARTTLS:
{
client.trace("Client received capability: STARTTLS");
starttls = true;
break;
}
case Protocol.CAP_ENDPOINT_NAME:
{
remoteEndpointName = Buffers.getModifiedUtf8(data);
client.tracef(
"Client received capability: remote endpoint name \"%s\"",
remoteEndpointName);
break;
}
case Protocol.CAP_MESSAGE_CLOSE:
{
behavior |= Protocol.BH_MESSAGE_CLOSE;
// remote side must be >= 3.2.11.GA
// but, we'll assume it's >= 3.2.14.GA because no AS or EAP release included
// 3.2.8.SP1 < x < 3.2.14.GA
behavior &= ~Protocol.BH_FAULTY_MSG_SIZE;
client.tracef("Client received capability: message close protocol supported");
break;
}
case Protocol.CAP_VERSION_STRING:
{
// remote side must be >= 3.2.16.GA
behavior &= ~Protocol.BH_FAULTY_MSG_SIZE;
final String remoteVersionString = Buffers.getModifiedUtf8(data);
client.tracef(
"Client received capability: remote version is \"%s\"",
remoteVersionString);
break;
}
case Protocol.CAP_CHANNELS_IN:
{
useDefaultChannels = false;
// their channels in is our channels out
channelsOut = ProtocolUtils.readIntData(data, len);
client.tracef(
"Client received capability: remote channels in is \"%d\"", channelsOut);
break;
}
case Protocol.CAP_CHANNELS_OUT:
{
useDefaultChannels = false;
// their channels out is our channels in
channelsIn = ProtocolUtils.readIntData(data, len);
client.tracef(
"Client received capability: remote channels out is \"%d\"", channelsIn);
break;
}
default:
{
client.tracef(
"Client received unknown capability %02x", Integer.valueOf(type & 0xff));
// unknown, skip it for forward compatibility.
break;
}
}
}
if (useDefaultChannels) {
channelsIn = 40;
channelsOut = 40;
}
if (starttls) {
// only initiate starttls if not forbidden by config
if (optionMap.get(Options.SSL_STARTTLS, true)) {
// Prepare the request message body
final Pooled<ByteBuffer> pooledSendBuffer = connection.allocate();
boolean ok = false;
try {
final ByteBuffer sendBuffer = pooledSendBuffer.getResource();
sendBuffer.put(Protocol.STARTTLS);
sendBuffer.flip();
connection.setReadListener(new StartTls(remoteServerName), true);
connection.send(pooledSendBuffer);
ok = true;
// all set
return;
} finally {
if (!ok) pooledSendBuffer.free();
}
}
}
if (serverSaslMechs.isEmpty()) {
if (failedMechs.isEmpty()) {
connection.handleException(
new SaslException(
"Authentication failed: the server presented no authentication mechanisms"));
} else {
// At this point we have been attempting to use mechanisms as they have been
// presented to us but we have now exhausted the list.
connection.handleException(allMechanismsFailed());
}
return;
}
// OK now send our authentication request
final AuthenticationContextConfigurationClient configurationClient =
AUTH_CONFIGURATION_CLIENT;
AuthenticationConfiguration configuration =
configurationClient.getAuthenticationConfiguration(uri, authenticationContext);
final SaslClient saslClient;
try {
saslClient =
configurationClient.createSaslClient(
uri, configuration, saslClientFactory, serverSaslMechs);
} catch (SaslException e) {
// apparently no more mechanisms can succeed
connection.handleException(e);
return;
}
if (saslClient == null) {
connection.handleException(allMechanismsFailed());
return;
}
final String mechanismName = saslClient.getMechanismName();
client.tracef("Client initiating authentication using mechanism %s", mechanismName);
connection.getChannel().suspendReads();
final int negotiatedVersion = version;
final SaslClient usedSaslClient = saslClient;
final Authentication authentication =
new Authentication(
usedSaslClient,
remoteServerName,
remoteEndpointName,
behavior,
channelsIn,
channelsOut);
connection
.getExecutor()
.execute(
() -> {
final byte[] response;
try {
response =
usedSaslClient.hasInitialResponse()
? usedSaslClient.evaluateChallenge(EMPTY_BYTES)
: null;
} catch (SaslException e) {
client.tracef("Client authentication failed: %s", e);
saslDispose(usedSaslClient);
failedMechs.put(mechanismName, e.toString());
sendCapRequest(remoteServerName);
return;
}
// Prepare the request message body
final Pooled<ByteBuffer> pooledSendBuffer = connection.allocate();
boolean ok = false;
try {
final ByteBuffer sendBuffer = pooledSendBuffer.getResource();
sendBuffer.put(Protocol.AUTH_REQUEST);
if (negotiatedVersion < 1) {
sendBuffer.put(mechanismName.getBytes(Protocol.UTF_8));
} else {
ProtocolUtils.writeString(sendBuffer, mechanismName);
if (response != null) {
sendBuffer.put(response);
}
}
sendBuffer.flip();
connection.send(pooledSendBuffer);
ok = true;
connection.setReadListener(authentication, true);
return;
} finally {
if (!ok) pooledSendBuffer.free();
}
});
return;
}
default:
{
client.unknownProtocolId(msgType);
connection.handleException(client.invalidMessage(connection));
return;
}
}
} catch (BufferUnderflowException | BufferOverflowException e) {
connection.handleException(client.invalidMessage(connection));
return;
} finally {
pooledReceiveBuffer.free();
}
}