| /** |
| * 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.server.preauth; |
| |
| import org.apache.kerby.kerberos.kerb.KrbException; |
| import org.apache.kerby.kerberos.kerb.server.KdcContext; |
| import org.apache.kerby.kerberos.kerb.server.preauth.builtin.EncTsPreauth; |
| import org.apache.kerby.kerberos.kerb.server.preauth.builtin.TgtPreauth; |
| import org.apache.kerby.kerberos.kerb.server.preauth.pkinit.PkinitPreauth; |
| import org.apache.kerby.kerberos.kerb.server.preauth.token.TokenPreauth; |
| import org.apache.kerby.kerberos.kerb.server.request.KdcRequest; |
| 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 java.util.ArrayList; |
| import java.util.List; |
| |
| public class PreauthHandler { |
| |
| private List<KdcPreauth> preauths; |
| |
| /** |
| * Should be called only once, for global |
| */ |
| public void init() { |
| loadPreauthPlugins(); |
| } |
| |
| private void loadPreauthPlugins() { |
| preauths = new ArrayList<KdcPreauth>(); |
| |
| KdcPreauth preauth = new EncTsPreauth(); |
| preauths.add(preauth); |
| |
| preauth = new TgtPreauth(); |
| preauths.add(preauth); |
| |
| preauth = new TokenPreauth(); |
| preauths.add(preauth); |
| |
| preauth = new PkinitPreauth(); |
| preauths.add(preauth); |
| } |
| |
| /** |
| * Should be called per realm |
| * @param context The kdc context |
| */ |
| public void initWith(KdcContext context) { |
| for (KdcPreauth preauth : preauths) { |
| preauth.initWith(context); |
| } |
| } |
| |
| public PreauthContext preparePreauthContext(KdcRequest kdcRequest) { |
| PreauthContext preauthContext = new PreauthContext(); |
| |
| KdcContext kdcContext = kdcRequest.getKdcContext(); |
| initWith(kdcContext); |
| preauthContext.setPreauthRequired(kdcContext.getConfig().isPreauthRequired()); |
| |
| for (KdcPreauth preauth : preauths) { |
| PreauthHandle handle = new PreauthHandle(preauth); |
| handle.initRequestContext(kdcRequest); |
| preauthContext.getHandles().add(handle); |
| } |
| |
| return preauthContext; |
| } |
| |
| public void provideEdata(KdcRequest kdcRequest, PaData outPaData) throws KrbException { |
| PreauthContext preauthContext = kdcRequest.getPreauthContext(); |
| |
| for (PreauthHandle handle : preauthContext.getHandles()) { |
| handle.provideEdata(kdcRequest, outPaData); |
| } |
| } |
| |
| public void verify(KdcRequest kdcRequest, PaData paData) throws KrbException { |
| for (PaDataEntry paEntry : paData.getElements()) { |
| PreauthHandle handle = findHandle(kdcRequest, paEntry.getPaDataType()); |
| if (handle != null) { |
| handle.verify(kdcRequest, paEntry); |
| } |
| } |
| } |
| |
| public void providePaData(KdcRequest kdcRequest, PaData paData) { |
| PreauthContext preauthContext = kdcRequest.getPreauthContext(); |
| |
| for (PreauthHandle handle : preauthContext.getHandles()) { |
| handle.providePaData(kdcRequest, paData); |
| } |
| } |
| |
| private PreauthHandle findHandle(KdcRequest kdcRequest, PaDataType paType) { |
| PreauthContext preauthContext = kdcRequest.getPreauthContext(); |
| |
| for (PreauthHandle handle : preauthContext.getHandles()) { |
| for (PaDataType pt : handle.preauth.getPaTypes()) { |
| if (pt == paType) { |
| return handle; |
| } |
| } |
| } |
| return null; |
| } |
| |
| public void destroy() { |
| for (KdcPreauth preauth : preauths) { |
| preauth.destroy(); |
| } |
| } |
| |
| public static boolean isToken(PaData paData) { |
| if (paData != null) { |
| for (PaDataEntry paEntry : paData.getElements()) { |
| if (paEntry.getPaDataType() == PaDataType.TOKEN_REQUEST) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| public static boolean isPkinit(PaData paData) { |
| if (paData != null) { |
| for (PaDataEntry paEntry : paData.getElements()) { |
| if (paEntry.getPaDataType() == PaDataType.PK_AS_REQ) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| } |