| /** |
| * 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.kerby.kerberos.kerb.client.preauth.builtin; |
| |
| import org.apache.kerby.kerberos.kerb.KrbCodec; |
| import org.apache.kerby.kerberos.kerb.KrbException; |
| import org.apache.kerby.kerberos.kerb.client.preauth.AbstractPreauthPlugin; |
| import org.apache.kerby.kerberos.kerb.client.request.KdcRequest; |
| import org.apache.kerby.kerberos.kerb.common.EncryptionUtil; |
| import org.apache.kerby.kerberos.kerb.preauth.PaFlag; |
| import org.apache.kerby.kerberos.kerb.preauth.PaFlags; |
| import org.apache.kerby.kerberos.kerb.preauth.PluginRequestContext; |
| import org.apache.kerby.kerberos.kerb.preauth.builtin.EncTsPreauthMeta; |
| import org.apache.kerby.kerberos.kerb.type.base.EncryptedData; |
| import org.apache.kerby.kerberos.kerb.type.base.KeyUsage; |
| import org.apache.kerby.kerberos.kerb.type.pa.PaData; |
| import org.apache.kerby.kerberos.kerb.type.pa.PaDataEntry; |
| import org.apache.kerby.kerberos.kerb.type.pa.PaDataType; |
| import org.apache.kerby.kerberos.kerb.type.pa.PaEncTsEnc; |
| |
| public class EncTsPreauth extends AbstractPreauthPlugin { |
| |
| public EncTsPreauth() { |
| super(new EncTsPreauthMeta()); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void prepareQuestions(KdcRequest kdcRequest, |
| PluginRequestContext requestContext) throws KrbException { |
| |
| kdcRequest.needAsKey(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void tryFirst(KdcRequest kdcRequest, |
| PluginRequestContext requestContext, |
| PaData outPadata) throws KrbException { |
| |
| if (kdcRequest.getAsKey() == null) { |
| kdcRequest.needAsKey(); |
| } |
| outPadata.addElement(makeEntry(kdcRequest)); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean process(KdcRequest kdcRequest, |
| PluginRequestContext requestContext, |
| PaDataEntry inPadata, |
| PaData outPadata) throws KrbException { |
| |
| if (kdcRequest.getAsKey() == null) { |
| kdcRequest.needAsKey(); |
| } |
| outPadata.addElement(makeEntry(kdcRequest)); |
| |
| return true; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public PaFlags getFlags(PaDataType paType) { |
| PaFlags paFlags = new PaFlags(0); |
| paFlags.setFlag(PaFlag.PA_REAL); |
| |
| return paFlags; |
| } |
| |
| /** |
| * Make padata entry. |
| * |
| * @param kdcRequest The kdc request |
| * @return PaDataEntry to be made. |
| */ |
| private PaDataEntry makeEntry(KdcRequest kdcRequest) throws KrbException { |
| PaEncTsEnc paTs = new PaEncTsEnc(); |
| paTs.setPaTimestamp(kdcRequest.getPreauthTime()); |
| |
| EncryptedData paDataValue = EncryptionUtil.seal(paTs, |
| kdcRequest.getAsKey(), KeyUsage.AS_REQ_PA_ENC_TS); |
| PaDataEntry tsPaEntry = new PaDataEntry(); |
| tsPaEntry.setPaDataType(PaDataType.ENC_TIMESTAMP); |
| tsPaEntry.setPaDataValue(KrbCodec.encode(paDataValue)); |
| |
| return tsPaEntry; |
| } |
| } |