| /** |
| * 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.request; |
| |
| import org.apache.kerby.kerberos.kerb.KrbErrorCode; |
| import org.apache.kerby.kerberos.kerb.KrbException; |
| import org.apache.kerby.kerberos.kerb.ccache.CredentialCache; |
| import org.apache.kerby.kerberos.kerb.client.KrbContext; |
| import org.apache.kerby.kerberos.kerb.client.PkinitOption; |
| import org.apache.kerby.kerberos.kerb.client.TokenOption; |
| import org.apache.kerby.kerberos.kerb.common.KrbUtil; |
| import org.apache.kerby.kerberos.kerb.type.base.EncryptionKey; |
| import org.apache.kerby.kerberos.kerb.type.base.HostAddress; |
| import org.apache.kerby.kerberos.kerb.type.base.HostAddresses; |
| import org.apache.kerby.kerberos.kerb.type.base.KeyUsage; |
| import org.apache.kerby.kerberos.kerb.type.base.PrincipalName; |
| import org.apache.kerby.kerberos.kerb.type.kdc.AsReq; |
| import org.apache.kerby.kerberos.kerb.type.kdc.EncAsRepPart; |
| import org.apache.kerby.kerberos.kerb.type.kdc.EncKdcRepPart; |
| import org.apache.kerby.kerberos.kerb.type.kdc.KdcRep; |
| import org.apache.kerby.kerberos.kerb.type.kdc.KdcReqBody; |
| import org.apache.kerby.kerberos.kerb.type.ticket.TgtTicket; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.List; |
| |
| public class AsRequest extends KdcRequest { |
| |
| private PrincipalName clientPrincipal; |
| private EncryptionKey clientKey; |
| |
| public AsRequest(KrbContext context) { |
| super(context); |
| |
| setServerPrincipal(makeTgsPrincipal()); |
| } |
| |
| public PrincipalName getClientPrincipal() { |
| return clientPrincipal; |
| } |
| |
| public void setClientPrincipal(PrincipalName clientPrincipal) { |
| this.clientPrincipal = clientPrincipal; |
| } |
| |
| public void setClientKey(EncryptionKey clientKey) { |
| this.clientKey = clientKey; |
| } |
| |
| @Override |
| public EncryptionKey getClientKey() throws KrbException { |
| return clientKey; |
| } |
| |
| @Override |
| public void process() throws KrbException { |
| super.process(); |
| |
| KdcReqBody body = getReqBody(null); |
| |
| AsReq asReq = new AsReq(); |
| asReq.setReqBody(body); |
| asReq.setPaData(getPreauthContext().getOutputPaData()); |
| |
| setKdcReq(asReq); |
| } |
| |
| @Override |
| public void processResponse(KdcRep kdcRep) throws KrbException { |
| setKdcRep(kdcRep); |
| |
| PrincipalName clientPrincipal = getKdcRep().getCname(); |
| String clientRealm = getKdcRep().getCrealm(); |
| clientPrincipal.setRealm(clientRealm); |
| |
| if (!(getRequestOptions().contains(PkinitOption.USE_ANONYMOUS) |
| && KrbUtil.pricipalCompareIgnoreRealm(clientPrincipal, getClientPrincipal())) |
| && !getRequestOptions().contains(TokenOption.USER_ID_TOKEN) |
| && !clientPrincipal.equals(getClientPrincipal())) { |
| throw new KrbException(KrbErrorCode.KDC_ERR_CLIENT_NAME_MISMATCH); |
| } |
| |
| byte[] decryptedData = decryptWithClientKey(getKdcRep().getEncryptedEncPart(), |
| KeyUsage.AS_REP_ENCPART); |
| if ((decryptedData[0] & 0x1f) == 26) { |
| decryptedData[0] = (byte) (decryptedData[0] - 1); |
| } |
| EncKdcRepPart encKdcRepPart = new EncAsRepPart(); |
| try { |
| encKdcRepPart.decode(decryptedData); |
| } catch (IOException e) { |
| throw new KrbException("Failed to decode EncAsRepPart", e); |
| } |
| getKdcRep().setEncPart(encKdcRepPart); |
| |
| if (getChosenNonce() != encKdcRepPart.getNonce()) { |
| throw new KrbException("Nonce didn't match"); |
| } |
| |
| PrincipalName returnedServerPrincipal = encKdcRepPart.getSname(); |
| returnedServerPrincipal.setRealm(encKdcRepPart.getSrealm()); |
| PrincipalName requestedServerPrincipal = getServerPrincipal(); |
| if (requestedServerPrincipal.getRealm() == null) { |
| requestedServerPrincipal.setRealm(getContext().getKrbSetting().getKdcRealm()); |
| } |
| if (!returnedServerPrincipal.equals(requestedServerPrincipal)) { |
| throw new KrbException(KrbErrorCode.KDC_ERR_SERVER_NOMATCH); |
| } |
| |
| HostAddresses hostAddresses = getHostAddresses(); |
| if (hostAddresses != null) { |
| List<HostAddress> requestHosts = hostAddresses.getElements(); |
| if (!requestHosts.isEmpty()) { |
| List<HostAddress> responseHosts = encKdcRepPart.getCaddr().getElements(); |
| for (HostAddress h : requestHosts) { |
| if (!responseHosts.contains(h)) { |
| throw new KrbException("Unexpected client host"); |
| } |
| } |
| } |
| } |
| } |
| |
| public TgtTicket getTicket() { |
| TgtTicket tgtTicket = new TgtTicket(getKdcRep().getTicket(), |
| (EncAsRepPart) getKdcRep().getEncPart(), getKdcRep().getCname()); |
| return tgtTicket; |
| } |
| |
| private PrincipalName makeTgsPrincipal() { |
| return KrbUtil.makeTgsPrincipal(getContext().getKrbSetting().getKdcRealm()); |
| } |
| |
| protected CredentialCache resolveCredCache(File ccacheFile) throws IOException { |
| CredentialCache cc = new CredentialCache(); |
| cc.load(ccacheFile); |
| |
| return cc; |
| } |
| |
| } |