| /** |
| * |
| * 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 |
| * |
| * http://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.bookkeeper.sasl; |
| |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.net.InetSocketAddress; |
| import java.net.SocketAddress; |
| import javax.security.auth.Subject; |
| import javax.security.sasl.SaslException; |
| |
| import org.apache.bookkeeper.auth.AuthCallbacks; |
| import org.apache.bookkeeper.auth.AuthToken; |
| import org.apache.bookkeeper.auth.ClientAuthProvider; |
| import org.apache.bookkeeper.client.BKException; |
| import org.apache.bookkeeper.proto.ClientConnectionPeer; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * SASL Client Authentication Provider. |
| */ |
| public class SASLClientAuthProvider implements ClientAuthProvider { |
| |
| private static final org.slf4j.Logger LOG = LoggerFactory.getLogger(SASLClientAuthProvider.class); |
| |
| private SaslClientState client; |
| private final AuthCallbacks.GenericCallback<Void> completeCb; |
| |
| SASLClientAuthProvider(ClientConnectionPeer addr, AuthCallbacks.GenericCallback<Void> completeCb, |
| Subject subject) { |
| this.completeCb = completeCb; |
| try { |
| SocketAddress remoteAddr = addr.getRemoteAddr(); |
| String hostname; |
| if (remoteAddr instanceof InetSocketAddress) { |
| InetSocketAddress inetSocketAddress = (InetSocketAddress) remoteAddr; |
| hostname = inetSocketAddress.getHostName(); |
| } else { |
| hostname = InetAddress.getLocalHost().getHostName(); |
| } |
| client = new SaslClientState(hostname, subject); |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("SASLClientAuthProvider Boot " + client + " for " + hostname); |
| } |
| } catch (IOException error) { |
| LOG.error("Error while booting SASL client", error); |
| completeCb.operationComplete(BKException.Code.UnauthorizedAccessException, null); |
| } |
| } |
| |
| @Override |
| public void init(AuthCallbacks.GenericCallback<AuthToken> cb) { |
| try { |
| if (client.hasInitialResponse()) { |
| byte[] response = client.evaluateChallenge(new byte[0]); |
| cb.operationComplete(BKException.Code.OK, AuthToken.wrap(response)); |
| } else { |
| cb.operationComplete(BKException.Code.OK, AuthToken.wrap(new byte[0])); |
| } |
| } catch (SaslException err) { |
| LOG.error("Error on SASL client", err); |
| completeCb.operationComplete(BKException.Code.UnauthorizedAccessException, null); |
| } |
| } |
| |
| @Override |
| public void process(AuthToken m, AuthCallbacks.GenericCallback<AuthToken> cb) { |
| if (client.isComplete()) { |
| completeCb.operationComplete(BKException.Code.OK, null); |
| return; |
| } |
| try { |
| byte[] responseToken = m.getData(); |
| byte[] response = client.evaluateChallenge(responseToken); |
| if (response == null) { |
| response = new byte[0]; |
| } |
| cb.operationComplete(BKException.Code.OK, AuthToken.wrap(response)); |
| if (client.isComplete()) { |
| completeCb.operationComplete(BKException.Code.OK, null); |
| } |
| } catch (SaslException err) { |
| LOG.error("Error on SASL client", err); |
| completeCb.operationComplete(BKException.Code.UnauthorizedAccessException, null); |
| } |
| |
| } |
| |
| } |