001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.security.provider;
019
020import java.io.IOException;
021import java.net.InetAddress;
022import java.util.Map;
023import javax.security.auth.callback.Callback;
024import javax.security.auth.callback.CallbackHandler;
025import javax.security.auth.callback.NameCallback;
026import javax.security.auth.callback.PasswordCallback;
027import javax.security.auth.callback.UnsupportedCallbackException;
028import javax.security.sasl.RealmCallback;
029import javax.security.sasl.RealmChoiceCallback;
030import javax.security.sasl.Sasl;
031import javax.security.sasl.SaslClient;
032import org.apache.hadoop.conf.Configuration;
033import org.apache.hadoop.hbase.security.SaslUtil;
034import org.apache.hadoop.hbase.security.SecurityInfo;
035import org.apache.hadoop.hbase.security.User;
036import org.apache.hadoop.security.token.Token;
037import org.apache.hadoop.security.token.TokenIdentifier;
038import org.apache.yetus.audience.InterfaceAudience;
039import org.slf4j.Logger;
040import org.slf4j.LoggerFactory;
041
042import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.UserInformation;
043
044@InterfaceAudience.Private
045public class DigestSaslClientAuthenticationProvider extends DigestSaslAuthenticationProvider
046  implements SaslClientAuthenticationProvider {
047
048  @Override
049  public SaslClient createClient(Configuration conf, InetAddress serverAddr,
050    SecurityInfo securityInfo, Token<? extends TokenIdentifier> token, boolean fallbackAllowed,
051    Map<String, String> saslProps) throws IOException {
052    return Sasl.createSaslClient(new String[] { getSaslAuthMethod().getSaslMechanism() }, null,
053      null, SaslUtil.SASL_DEFAULT_REALM, saslProps, new DigestSaslClientCallbackHandler(token));
054  }
055
056  public static class DigestSaslClientCallbackHandler implements CallbackHandler {
057    private static final Logger LOG =
058      LoggerFactory.getLogger(DigestSaslClientCallbackHandler.class);
059    private final String userName;
060    private final char[] userPassword;
061
062    public DigestSaslClientCallbackHandler(Token<? extends TokenIdentifier> token) {
063      this.userName = SaslUtil.encodeIdentifier(token.getIdentifier());
064      this.userPassword = SaslUtil.encodePassword(token.getPassword());
065    }
066
067    @Override
068    public void handle(Callback[] callbacks) throws UnsupportedCallbackException {
069      NameCallback nc = null;
070      PasswordCallback pc = null;
071      RealmCallback rc = null;
072      for (Callback callback : callbacks) {
073        if (callback instanceof RealmChoiceCallback) {
074          continue;
075        } else if (callback instanceof NameCallback) {
076          nc = (NameCallback) callback;
077        } else if (callback instanceof PasswordCallback) {
078          pc = (PasswordCallback) callback;
079        } else if (callback instanceof RealmCallback) {
080          rc = (RealmCallback) callback;
081        } else {
082          throw new UnsupportedCallbackException(callback, "Unrecognized SASL client callback");
083        }
084      }
085      if (nc != null) {
086        LOG.debug("SASL client callback: setting username: {}", userName);
087        nc.setName(userName);
088      }
089      if (pc != null) {
090        LOG.debug("SASL client callback: setting userPassword");
091        pc.setPassword(userPassword);
092      }
093      if (rc != null) {
094        LOG.debug("SASL client callback: setting realm: {}", rc.getDefaultText());
095        rc.setText(rc.getDefaultText());
096      }
097    }
098  }
099
100  @Override
101  public UserInformation getUserInfo(User user) {
102    // Don't send user for token auth. Copied from RpcConnection.
103    return null;
104  }
105}