| /** |
| * 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.token; |
| |
| import org.apache.kerby.KOption; |
| import org.apache.kerby.KOptions; |
| import org.apache.kerby.kerberos.kerb.KrbException; |
| import org.apache.kerby.kerberos.kerb.client.KrbContext; |
| import org.apache.kerby.kerberos.kerb.client.TokenOption; |
| 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.token.TokenPreauthMeta; |
| import org.apache.kerby.kerberos.kerb.type.base.AuthToken; |
| import org.apache.kerby.kerberos.kerb.type.base.EncryptedData; |
| import org.apache.kerby.kerberos.kerb.type.base.EncryptionType; |
| import org.apache.kerby.kerberos.kerb.type.base.KeyUsage; |
| import org.apache.kerby.kerberos.kerb.type.base.KrbToken; |
| 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.token.PaTokenRequest; |
| import org.apache.kerby.kerberos.kerb.type.pa.token.TokenInfo; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| public class TokenPreauth extends AbstractPreauthPlugin { |
| |
| private TokenContext tokenContext; |
| |
| public TokenPreauth() { |
| super(new TokenPreauthMeta()); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void init(KrbContext context) { |
| super.init(context); |
| this.tokenContext = new TokenContext(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public PluginRequestContext initRequestContext(KdcRequest kdcRequest) { |
| TokenRequestContext reqCtx = new TokenRequestContext(); |
| |
| return reqCtx; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void prepareQuestions(KdcRequest kdcRequest, |
| PluginRequestContext requestContext) { |
| |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public List<EncryptionType> getEncTypes(KdcRequest kdcRequest, |
| PluginRequestContext requestContext) { |
| return Collections.emptyList(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void setPreauthOptions(KdcRequest kdcRequest, |
| PluginRequestContext requestContext, |
| KOptions options) { |
| |
| tokenContext.usingIdToken = options.getBooleanOption(TokenOption.USE_TOKEN, false); |
| if (tokenContext.usingIdToken) { |
| if (options.contains(TokenOption.USER_ID_TOKEN)) { |
| tokenContext.token = |
| (AuthToken) options.getOptionValue(TokenOption.USER_ID_TOKEN); |
| } |
| } else { |
| if (options.contains(TokenOption.USER_AC_TOKEN)) { |
| tokenContext.token = |
| (AuthToken) options.getOptionValue(TokenOption.USER_AC_TOKEN); |
| } |
| } |
| |
| } |
| |
| /** |
| * {@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 boolean tryAgain(KdcRequest kdcRequest, |
| PluginRequestContext requestContext, |
| PaDataType preauthType, |
| PaData errPadata, |
| PaData outPadata) { |
| return false; |
| } |
| |
| /** |
| * {@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 { |
| KOptions options = kdcRequest.getPreauthOptions(); |
| |
| KOption idToken = options.getOption(TokenOption.USER_ID_TOKEN); |
| KOption acToken = options.getOption(TokenOption.USER_AC_TOKEN); |
| AuthToken authToken; |
| if (idToken != null) { |
| authToken = (AuthToken) idToken.getOptionInfo().getValue(); |
| } else if (acToken != null) { |
| authToken = (AuthToken) acToken.getOptionInfo().getValue(); |
| } else { |
| throw new KrbException("missing token."); |
| } |
| |
| PaTokenRequest tokenPa = new PaTokenRequest(); |
| tokenPa.setToken((KrbToken) authToken); |
| TokenInfo info = new TokenInfo(); |
| info.setTokenVendor(authToken.getIssuer()); |
| tokenPa.setTokenInfo(info); |
| |
| EncryptedData paDataValue = EncryptionUtil.seal(tokenPa, |
| kdcRequest.getAsKey(), KeyUsage.PA_TOKEN); |
| |
| PaDataEntry paDataEntry = new PaDataEntry(); |
| paDataEntry.setPaDataType(PaDataType.TOKEN_REQUEST); |
| paDataEntry.setPaDataValue(paDataValue.encode()); |
| |
| return paDataEntry; |
| } |
| } |