| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 |
| * |
| * https://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 org.apache.avro.ipc; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| import java.net.SocketAddress; |
| import java.nio.channels.SocketChannel; |
| import java.nio.charset.StandardCharsets; |
| |
| import javax.security.sasl.Sasl; |
| import javax.security.sasl.SaslServer; |
| import javax.security.sasl.SaslException; |
| import javax.security.auth.callback.CallbackHandler; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * A {@link Server} that uses {@link javax.security.sasl} for authentication and |
| * encryption. |
| */ |
| public class SaslSocketServer extends SocketServer { |
| private static final Logger LOG = LoggerFactory.getLogger(SaslServer.class); |
| |
| private static abstract class SaslServerFactory { |
| protected abstract SaslServer getServer() throws SaslException; |
| } |
| |
| private SaslServerFactory factory; |
| |
| /** |
| * Create using SASL's anonymous |
| * (<a href="https://www.ietf.org/rfc/rfc2245.txt">RFC 2245) mechanism. |
| */ |
| public SaslSocketServer(Responder responder, SocketAddress addr) throws IOException { |
| this(responder, addr, new SaslServerFactory() { |
| @Override |
| public SaslServer getServer() { |
| return new AnonymousServer(); |
| } |
| }); |
| } |
| |
| /** Create using the specified {@link SaslServer} parameters. */ |
| public SaslSocketServer(Responder responder, SocketAddress addr, final String mechanism, final String protocol, |
| final String serverName, final Map<String, ?> props, final CallbackHandler cbh) throws IOException { |
| this(responder, addr, new SaslServerFactory() { |
| @Override |
| public SaslServer getServer() throws SaslException { |
| return Sasl.createSaslServer(mechanism, protocol, serverName, props, cbh); |
| } |
| }); |
| } |
| |
| private SaslSocketServer(Responder responder, SocketAddress addr, SaslServerFactory factory) throws IOException { |
| super(responder, addr); |
| this.factory = factory; |
| } |
| |
| @Override |
| protected Transceiver getTransceiver(SocketChannel channel) throws IOException { |
| return new SaslSocketTransceiver(channel, factory.getServer()); |
| } |
| |
| private static class AnonymousServer implements SaslServer { |
| private String user; |
| |
| @Override |
| public String getMechanismName() { |
| return "ANONYMOUS"; |
| } |
| |
| @Override |
| public byte[] evaluateResponse(byte[] response) throws SaslException { |
| this.user = new String(response, StandardCharsets.UTF_8); |
| return null; |
| } |
| |
| @Override |
| public boolean isComplete() { |
| return user != null; |
| } |
| |
| @Override |
| public String getAuthorizationID() { |
| return user; |
| } |
| |
| @Override |
| public byte[] unwrap(byte[] incoming, int offset, int len) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public byte[] wrap(byte[] outgoing, int offset, int len) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public Object getNegotiatedProperty(String propName) { |
| return null; |
| } |
| |
| @Override |
| public void dispose() { |
| } |
| } |
| |
| } |